Exim was not testing for a space following SMTP commands such as EHLO
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
084efe8d 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.383 2006/07/27 11:29:32 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
478be7b0
SC
6Exim version 4.63
7-----------------
8
9SC/01 Use a glob alias rather than an array ref in eximstats generated
10 parser. This improves both readability and performance.
11
12SC/02 Collect SpamAssassin and rejection statistics in eximstats.
13 Don't display local sender or destination tables in eximstats unless
14 there is data to show.
15 Added average volumes into the eximstats top table text output.
16
17SC/03 Collect data on the number of addresses (recipients) as well
18 as the number of messages in eximstats.
19
2b965a65
TF
20TF/01 Correct an error in the documentation for the redirect router. Exim
21 does (usually) call initgroups() when daemonizing.
478be7b0 22
45b91596
PH
23TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
24 with consistent privilege compared to when running as a daemon.
478be7b0 25
c59f5781
TF
26TF/03 Note in the spec that $authenticated_id is not set for local
27 submissions from trusted users.
28
90fc3069
TF
29TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
30 Thanks to Dean Brooks <dean@iglou.com> for the patch.
31
6083aca0
TF
32TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
33 by adding some example configuration directives to the default
34 configuration file. A little bit of work is required to uncomment the
35 directives and define how usernames and passwords are checked, but
36 there is now a framework to start from.
37
765b530f
PH
38PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
39 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
40 without this. I don't know how relevant this is to other LDAP libraries.
41
4e167a8c
PH
42PH/02 Add the verb name to the "unknown ACL verb" error.
43
4608d683
PH
44PH/03 Magnus Holmgren's patch for filter_prepend_home.
45
b8dc3e4a
PH
46PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
47
5418e93b
PH
48PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
49 directory not expanded when it should be if an expanded home directory
50 was set for the address (which is overridden by the transport).
51
b4a9bda2
PH
52PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
53 libradius.
54
45b91596
PH
55PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
56 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
57 because it is too late at that time, and has no effect.
58
5547e2c5
PH
59PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
60 security issue with \' (bugzilla #107). I could not use the
61 PQescapeStringConn() function, because it needs a PGconn value as one of
62 its arguments.
63
dbcef0ea
PH
64PH/08 When testing addresses using -bt, indicate those final addresses that
65 are duplicates that would not cause an additional delivery. At least one
66 person was confused, thinking that -bt output corresponded to deliveries.
67 (Suppressing duplicates isn't a good idea as you lose the information
68 about possibly different redirections that led to the duplicates.)
69
25257489
PH
70PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
71 systems where poll() doesn't work, in particular OS X.
72
c816d124
PH
73PH/10 Added more information to debugging output for retry time not reached.
74
a9ccd69a
PH
75PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
76 operations in malware.c.
77
75fa1910
PH
78PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
79 signatures.
80
a7d7aa58
PH
81PH/13 If write_rejectlog was set false when logging was sent to syslog with
82 syslog_duplication set false, log lines that would normally be written
83 both the the main log and to the reject log were not written to syslog at
84 all.
85
42119b09
PH
86PH/14 In the default configuration, change the use of "message" in ACL warn
87 statements to "add_header".
88
41609df5
PH
89PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
90 not followed by a command (e.g. "seen endif").
91
a5bd321b
PH
92PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
93 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
94 latter.
95
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
33d73e3b
PH
129PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
130 authenticated or an ident call has been made. Suppress the default
131 values for $authenticated_id and $authenticated_sender (but permit -oMai
132 and -oMas) when testing with -bh.
133
9ecb03f3
PH
134PH/24 Re-jigged the order of the tests in the default configuration so that the
135 tests for valid domains and recipients precede the DNS black list and CSA
136 tests, on the grounds that those ones are more expensive.
137
084efe8d
PH
138PH/25 Exim was not testing for a space following SMTP commands such as EHLO
139 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
140 This bug exists in every version of Exim that I still have, right back to
141 0.12.
142
c59f5781 143
c887c79e
TF
144Exim version 4.62
145-----------------
146
147TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
148 other effects) broke the use of negated acl sub-conditions.
149
1cce3af8
PH
150PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
151 patch).
152
afb3eaaf
PH
153PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
154 "Deny" causes Exim to reject the incoming connection with a 554 error.
155 Unfortunately, if there is a major crisis, such as a disk failure,
156 tcp-wrappers gives "deny", whereas what one would like would be some
157 kind of temporary error. A kludge has been added to help with this.
158 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
159 554 error is used if errno is still zero or contains ENOENT (which occurs
160 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
161 451 error is used.
162
e173618b
PH
163PH/03 Add -lutil to the default FreeBSD LIBS setting.
164
dd16e114
PH
165PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
166 errors. Otherwise a message that provokes a temporary error (when other
167 messages do not) can cause a whole host to time out.
168
f7fd3850
PH
169PH/05 Batch deliveries by appendfile and pipe transports did not work when the
170 addresses were routed directly to files or pipes from a redirect router.
171 File deliveries just didn't batch; pipe deliveries might have suffered
172 odd errors.
173
d87df92c
PH
174PH/06 A failure to get a lock for a hints database would erroneously always say
175 "Failed to get write lock", even when it was really a read lock.
176
7e9f683d
PH
177PH/07 The appendfile transport was creating MBX lock files with a fixed mode
178 of 0600. This has been changed to use the value of the lockfile_mode
179 option (which defaults to 0600).
180
bfad5236
PH
181PH/08 Applied small patch from the Sieve maintainer.
182
01c490df
PH
183PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
184 folder from quota calculations, a direct delivery into this folder messed
185 up the contents of the maildirsize file. This was because the regex was
186 used only to exclude .Trash (or whatever) when the size of the mailbox
187 was calculated. There was no check that a delivery was happening into an
188 excluded directory. This bug has been fixed by ignoring all quota
189 processing for deliveries into excluded directories.
190
d6629cdc
PH
191PH/10 Added the maildirfolder_create_regex option to appendfile.
192
1cce3af8 193
214e2000
PH
194Exim version 4.61
195-----------------
196
197PH/01 The code for finding all the local interface addresses on a FreeBSD
198 system running IPv6 was broken. This may well have applied to all BSD
199 systems, as well as to others that have similar system calls. The broken
200 code found IPv4 interfaces correctly, but gave incorrect values for the
201 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
202 that it would not match correctly against @[] and not recognize the IPv6
203 addresses as local.
204
f9daeae0
PH
205PH/02 The ipliteral router was not recognizing addresses of the form user@
206 [ipv6:....] because it didn't know about the "ipv6:" prefix.
207
7e66e54d
PH
208PH/03 Added disable_ipv6.
209
c8ea1597
PH
210PH/04 Changed $reply_address to use the raw form of the headers instead of the
211 decoded form, because it is most often used to construct To: headers
212 lines in autoreplies, and the decoded form may well be syntactically
213 invalid. However, $reply_address has leading white space removed, and all
214 newlines turned into spaces so that the autoreply transport does not
215 grumble.
216
911f6fde
PH
217PH/05 If group was specified without a user on a router, and no group or user
218 was specified on a transport, the group from the router was ignored.
219
47ca6d6c
PH
220PH/06 Increased the number of ACL variables to 20 of each type, and arranged
221 for visible compile-time settings that can be used to change these
222 numbers, for those that want even more. Backwards compatibility with old
223 spool files has been maintained. However, going back to a previous Exim
224 release will lost any variables that are in spool files.
225
ed0e9820
PH
226PH/07 Two small changes when running in the test harness: increase delay when
227 passing a TCP/IP connection to a new process, in case the original
228 process has to generate a bounce, and remove special handling of
229 127.0.0.2 (sic), which is no longer necessary.
230
eff37e47
PH
231PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
232 be the same on different OS.
233
1921d2ea
PH
234PH/09 Moved a debug statement in filter processing to avoid a race problem when
235 testing.
236
b3f69ca8
JJ
237JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
238 whether --show-vars was specified or not
239
240JJ/02 exipick: Added support for new ACL variable spool format introduced
241 in 4.61-PH/06
242
424a1c63
PH
243PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
244 syntactically invalid From: or Reply-to: line, and a filter used this to
245 generate an autoreply, and therefore failed to obtain an address for the
246 autoreply, Exim could try to deliver to a non-existent relative file
247 name, causing unrelated and misleading errors. What now happens is that
248 it logs this as a hard delivery error, but does not attempt to create a
249 bounce message.
250
7a100415
PH
251PH/11 The exinext utility has a -C option for testing purposes, but although
252 the given file was scanned by exinext itself; it wasn't being passed on
253 when Exim was called.
254
19b9dc85
PH
255PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
256 an end-of-file indication when reading a command response.
257
309bd837
PH
258PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
259 compiled. In many other places in Exim, IPv6 addresses are always
260 recognized, so I have changed this. It also means that IPv4 domain
261 literals of the form [IPV4:n.n.n.n] are now always recognized.
262
59e82a2a
PH
263PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
264 used if the router is not running as root, for example, when verifying at
265 ACL time, or when using -bh. The debugging output from this situation was
266 non-existent - all you got was a failure to exec. I have made two
267 changes:
268
269 (a) Failures to set uid/gid, the current directory, or a process leader
270 in a subprocess such as that created by queryprogram now generate
271 suitable debugging ouput when -d is set.
272
273 (b) The queryprogram router detects when it is not running as root,
274 outputs suitable debugging information if -d is set, and then runs
275 the subprocess without attempting to change uid/gid.
276
9edc04ce
PH
277PH/15 Minor change to Makefile for building test_host (undocumented testing
278 feature).
279
1349e1e5
PH
280PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
281 additional section of a DNS packet that returns MX or SRV records.
282 Instead, it always explicitly searches for A/AAAA records. This avoids
283 major problems that occur when a DNS server includes only records of one
284 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
285 fixed another bug: if SRV records were looked up and the corresponding
286 address records were *not* found in the additional section, the port
287 values from the SRV records were lost.
288
ea49d0e1
PH
289PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
290 using the correct key (the original address) when searching the retry
291 rules in order to find which one to use for generating the retry hint.
292
064a94c9
PH
293PH/18 If quota_warn_message contains a From: header, Exim now refrains from
294 adding the default one. Similarly, if it contains a Reply-To: header, the
295 errors_reply_to option, if set, is not used.
296
727071f8
PH
297PH/19 When calculating a retry time, Exim used to measure the "time since
298 failure" by looking at the "first failed" field in the retry record. Now
299 it does not use this if it is later than than the arrival time of the
300 message. Instead it uses the arrival time. This makes for better
301 behaviour in cases where some deliveries succeed, thus re-setting the
302 "first failed" field. An example is a quota failure for a huge message
303 when small messages continue to be delivered. Without this change, the
304 "time since failure" will always be short, possible causing more frequent
305 delivery attempts for the huge message than are intended.
dd16e114 306 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 307
f78eb7c6
PH
308PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
309 $1, $2, $3) because the numerical variables can be reset during some
310 expansion items (e.g. "match"), thereby losing the authentication data.
311
21c28500
PH
312PH/21 Make -bV show the size of off_t variables so that the test suite can
313 decide whether to run tests for quotas > 2G.
314
315PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
316 mailbox_size, and mailbox_filecount in the appendfile transport. If a
317 filecount value is greater than 2G or if a quota value is greater than 2G
318 on a system where the size of off_t is not greater than 4, a panic error
319 is given.
320
1688f43b
PH
321PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
322 never match. The debug and -bh output now contains an explicit error
323 message indicating a malformed IPv4 address or mask.
324
325PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
326 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
327 PH/23 above applies.
328
9675b384
PH
329PH/25 Do not write to syslog when running in the test harness. The only
330 occasion when this arises is a failure to open the main or panic logs
331 (for which there is an explicit test).
332
6a3f1455
PH
333PH/26 Added the /no_tell option to "control=freeze".
334
dac79d3e
PH
335PH/27 If a host name lookup failed very early in a connection, for example, if
336 the IP address matched host_lookup and the reverse lookup yielded a name
337 that did not have a forward lookup, an error message of the form "no IP
338 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
339 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 340
5977a0b3
PH
341PH/28 An enabling patch from MH: add new function child_open_exim2() which
342 allows the sender and the authenticated sender to be set when
343 submitting a message from within Exim. Since child_open_exim() is
344 documented for local_scan(), the new function should be too.
345
c91535f3
PH
346PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
347 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
348 results in an empty string is now treated as unset.
349
0d46a8c8
PH
350PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
351
278c6e6c
PH
352PH/31 Added sender_verify_fail logging option.
353
2cbb4081
PH
354PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
355 needed by RFC 822 but not by RFC 2822 was commented out. I have now
356 tidied the source and removed it altogether.
357
3eef829e
PH
358PH/33 When a queue run was abandoned because the load average was too high, a
359 log line was always written; now it is written only if the queue_run log
360 selector is set. In addition, the log line for abandonment now contains
361 information about the queue run such as the pid. This is always present
362 in "start" and "stop" lines but was omitted from the "abandon" line.
363
1ab95fa6
PH
364PH/34 Omit spaces between a header name and the colon in the error message that
365 is given when verify = headers_syntax fails (if there are lots of them,
366 the message gets confusing).
367
230205fc
PH
368PH/35 Change the default for dns_check_names_pattern to allow slashes within
369 names, as there are now some PTR records that contain slashes. This check
370 is only to protect against broken name servers that fall over on strange
371 characters, so the fact that it applies to all lookups doesn't matter.
372
75e0e026
PH
373PH/36 Now that the new test suite is complete, we can remove some of the
374 special code in Exim that was needed for the old test suite. For example,
375 sorting DNS records because real resolvers return them in an arbitrary
376 order. The new test suite's fake resolver always returns records in the
377 same order.
378
379PH/37 When running in the test harness, use -odi for submitted messages (e.g.
380 bounces) except when queue_only is set, to avoid logging races between
381 the different processes.
382
145396a6
PH
383PH/38 Panic-die if .include specifies a non-absolute path.
384
3cd34f13
PH
385PH/39 A tweak to the "H" retry rule from its user.
386
11121d3d
JJ
387JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
388 a label. They prevented compilation on older perls.
389
390JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
391 a warning to be raised on newish perls.
392
393JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
394 on queue. Changes to match documented behaviour of showing count of
395 messages matching specified criteria.
396
8def5aaf
PH
397PH/40 Changed the default ident timeout from 30s to 5s.
398
929ba01c
PH
399PH/41 Added support for the use of login_cap features, on those BSD systems
400 that have them, for controlling the resources used by pipe deliveries.
401
2632889e
PH
402PH/42 The content-scanning code uses fopen() to create files in which to put
403 message data. Previously it was not paying any attention to the mode of
404 the files. Exim runs with umask(0) because the rest of the code creates
405 files with open(), and sets the required mode explicitly. Thus, these
406 files were ending up world-writeable. This was not a big issue, because,
407 being within the spool directory, they were not world-accessible. I have
408 created a function called modefopen, which takes an additional mode
409 argument. It sets umask(777), creates the file, chmods it to the required
410 mode, then resets the umask. All the relevant calls to fopen() in the
411 content scanning code have been changed to use this function.
412
944a9c55
PH
413PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
414 to 24 hours. This avoids potential overflow problems when processing G
415 and H retry rules. I suspect nobody ever tinkers with this value.
416
4a23603b
PH
417PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
418
4730f942
PH
419PH/45 When the plaintext authenticator is running as a client, the server's
420 challenges are checked to ensure they are valid base64 strings. By
421 default, the authentication attempt is cancelled if an invalid string is
422 received. Setting client_ignore_invalid_base64 true ignores these errors.
423 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
424 they are received. Thus, the responses can be made to depend on the
425 challenges. If an invalid string is ignored, an empty string is placed in
426 the variable.
427
30dba1e6
PH
428PH/46 Messages that are created by the autoreply transport now contains a
429 References: header, in accordance with RFCs 2822 and 3834.
430
382afc6b
PH
431PH/47 Added authenticated_sender_force to the smtp transport.
432
a86229cf
PH
433PH/48 The ${prvs expansion was broken on systems where time_t was long long.
434
50c99ba6
PH
435PH/49 Installed latest patch from the Sieve maintainer.
436
d35e429d
PH
437PH/50 When an Exim quota was set without a file count quota, and mailbox_size
438 was also set, the appendfile transport was unnecessarily scanning a
439 directory of message files (e.g. for maildir delivery) to find the count
440 of files (along with the size), even though it did not need this
441 information. It now does the scan only if it needs to find either the
442 size of the count of files.
443
f90d018c
PH
444PH/51 Added ${time_eval: to convert Exim time strings into seconds.
445
75def545
PH
446PH/52 Two bugs concerned with error handling when the smtp transport is
447 used in LMTP mode:
448
449 (i) Exim was not creating retry information for temporary errors given
450 for individual recipients after the DATA command when the smtp transport
451 was used in LMTP mode. This meant that they could be retried too
452 frequently, and not timed out correctly.
453
454 (ii) Exim was setting the flag that allows error details to be returned
455 for LMTP errors on RCPT commands, but not for LMTP errors for individual
456 recipients that were returned after the DATA command.
457
458PH/53 This is related to PH/52, but is more general: for any failing address,
459 when detailed error information was permitted to be returned to the
460 sender, but the error was temporary, then after the final timeout, only
461 "retry timeout exceeded" was returned. Now it returns the full error as
462 well as "retry timeout exceeded".
463
c46782ef
PH
464PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
465 do this, and (what is worse) MTAs that accept it.
466
71fafd95
PH
467PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
468 will now be deprecated.
469
2c5db4fd
PH
470PH/56 New os.c-cygwin from the Cygwin maintainer.
471
9cf6b11a
JJ
472JJ/06 exipick: added --unsorted option to allow unsorted output in all output
473 formats (previously only available in exim formats via -bpr, -bpru,
474 and -bpra. Now also available in native and exiqgrep formats)
475
476JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
477 with very large, slow to parse queues
478
479JJ/08 exipick: added ! as generic prefix to negate any criteria format
480
481JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
482
898d150f
PH
483PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
484 responses to authentication challenges, though it was showing the
485 challenges; (ii) I've removed the CR characters from the debug output for
486 SMTP output lines.
487
46218253
PH
488PH/58 Allow for the insertion of a newline as well as a space when a string
489 is turned into more than one encoded-word during RFC 2047 encoding. The
490 Sieve code now uses this.
491
e97957bc
PH
492PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
493 data_4xx, lost_connection, tls_required.
494
81e509d7
PH
495PH/60 When a VRFY deferred or FAILED, the log message rather than the user
496 message was being sent as an SMTP response.
497
3d240ff7
PH
498PH/61 Add -l and -k options to exicyclog.
499
b37c4101
PH
500PH/62 When verifying, if an address was redirected to one new address, so that
501 verification continued, and the new address failed or deferred after
502 having set something in $address_data, the value of $address_data was not
503 passed back to the ACL. This was different to the case when no
504 redirection occurred. The value is now passed back in both cases.
505
79378e0f
PH
506PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
507 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
508 use login_cap.h, so on its own it isn't the distinguishing feature. The
509 new name refers directly to the setclassresources() function.
510
e49c7bb4
PH
511PH/65 Added configuration files for NetBSD3.
512
d114ec46
PH
513PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
514
f3d7df6c
PH
515PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
516 is preferred over IPv4.
517
715ab376
PH
518PH/68 The bounce_return_message and bounce_return_body options were not being
519 honoured for bounces generated during the reception of non-SMTP messages.
520 In particular, this applied to messages rejected by the ACL. This bug has
521 been fixed. However, if bounce_return_message is true and bounce_return_
522 body is false, the headers that are returned for a non-SMTP message
523 include only those that have been read before the error was detected.
524 (In the case of an ACL rejection, they have all been read.)
525
6b31b150
PH
526PH/69 The HTML version of the specification is now built in a directory called
527 spec_html instead of spec.html, because the latter looks like a path with
528 a MIME-type, and this confuses some software.
529
530PH/70 Catch two compiler warnings in sieve.c.
531
d515a917
PH
532PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
533 function verify_get_ident() calls ip_connect() to connect a socket, but
534 if the "connect()" function timed out, ip_connect() used to close the
535 socket. However, verify_get_ident() also closes the socket later, and in
536 between Exim writes to the log, which may get opened at this point. When
537 the socket was closed in ip_connect(), the log could get the same file
538 descriptor number as the socket. This naturally causes chaos. The fix is
539 not to close the socket in ip_connect(); the socket should be closed by
540 the function that creates it. There was only one place in the code where
541 this was missing, in the iplookup router, which I don't think anybody now
542 uses, but I've fixed it anyway.
543
9b8fadde
PH
544PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
545 well as to direct DNS lookups. Otherwise the handling of names in host
546 lists is inconsistent and therefore confusing.
547
214e2000 548
5de37277
PH
549Exim version 4.60
550-----------------
551
cc38ddbf
PH
552PH/01 Two changes to the default runtime configuration:
553
554 (1) Move the checks for relay_from_hosts and authenticated clients from
555 after to before the (commented out) DNS black list checks.
556
557 (2) Add control=submission to the relay_from_hosts and authenticated
558 clients checks, on the grounds that messages accepted by these
559 statements are most likely to be submissions.
5de37277 560
72fdd6ae
PH
561PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
562
563 (1) Generate an error if the third argument for the ${prvs expansion is
564 not a single digit.
565
566 (2) Treat a missing third argument of ${prvscheck as if it were an empty
567 string.
568
569 (3) Reset the variables that are obtained from the first argument of
570 ${prvscheck and used in the second argument before leaving the code,
571 because their memory is reclaimed, so using them afterwards may do
572 silly things.
573
574 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
575 one (it's much easier than Tom thought :-).
576
577 (5) Because of (4), we can now allow for the use of $prvscheck_result
578 inside the third argument.
cb9328de 579
cb741023
PH
580PH/03 For some reason, the default setting of PATH when running a command from
581 a pipe transport was just "/usr/bin". I have changed it to
582 "/bin:/usr/bin".
583
f174f16e
PH
584PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
585 anything to be listed in the output from -bV.
b2f5a032 586
c25242d7
PH
587PH/05 When a filter generated an autoreply, the entire To: header line was
588 quoted in the delivery log line, like this:
589
590 => >A.N.Other <ano@some.domain> <original@ddress> ...
591
592 This has been changed so that it extracts the operative address. There
593 may be more than one such address. If so, they are comma-separated, like
594 this:
595
596 => >ano@some.domain,ona@other.domain <original@ddress> ...
597
82c19f95
PH
598PH/06 When a client host used a correct literal IP address in a HELO or EHLO
599 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
600 not being looked up in the rDNS to get a host name, Exim was showing the
601 IP address twice in Received: lines, even though the IP addresses were
602 identical. For example:
603
604 Received: from [1.2.3.4] (helo=[1.2.3.4])
605
606 However, if the real host name was known, it was omitting the HELO data
607 if it matched the actual IP address. This has been tidied up so that it
608 doesn't show the same IP address twice.
609
d7ffbc12
PH
610PH/07 When both +timestamp and +memory debugging was on, the value given by
611 $tod_xxx expansions could be wrong, because the tod_stamp() function was
612 called by the debug printing, thereby overwriting the timestamp buffer.
613 Debugging no longer uses the tod_stamp() function when +timestamp is set.
614
9f526266
PH
615PH/08 When the original message was included in an autoreply transport, it
616 always said "this is a copy of the message, including all the headers",
617 even if body_only or headers_only was set. It now gives an appropriate
618 message.
619
87fcc8b9
PH
620PH/09 Applied a patch from the Sieve maintainer which:
621
622 o fixes some comments
623 o adds the (disabled) notify extension core
624 o adds some debug output for the result of if/elsif tests
625 o points to the current vacation draft in the documentation
626 and documents the missing references header update
627
628 and most important:
629
630 o fixes a bug in processing the envelope test (when testing
631 multiple envelope elements, the last element determinted the
632 result)
633
456682f5
PH
634PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
635 Electronic Mail") by including:
636
637 Auto-submitted: auto-generated
638
639 in the messages that it generates (bounce messages and others, such as
640 warnings). In the case of bounce messages for non-SMTP mesages, there was
641 also a typo: it was using "Auto_submitted" (underscore instead of
642 hyphen). Since every message generated by Exim is necessarily in response
643 to another message, thes have all been changed to:
644
645 Auto-Submitted: auto-replied
646
647 in accordance with these statements in the RFC:
648
649 The auto-replied keyword:
650
651 - SHOULD be used on messages sent in direct response to another
652 message by an automatic process,
653
654 - MUST NOT be used on manually-generated messages,
655
656 - MAY be used on Delivery Status Notifications (DSNs) and Message
657 Disposition Notifications (MDNs),
658
659 - MUST NOT be used on messages generated by automatic or periodic
660 processes, except for messages which are automatic responses to
661 other messages.
662
3e46c1aa
PH
663PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
664 to the default Received: header definition.
456682f5 665
49826d12
PH
666PH/12 Added log selector acl_warn_skipped (default on).
667
eba0c039
PH
668PH/13 After a successful wildlsearch lookup, discard the values of numeric
669 variables because (a) they are in the wrong storage pool and (b) even if
670 they were copied, it wouldn't work properly because of the caching.
671
a0d6ba8a
PH
672PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
673 checking when decoding. Apparently there are clients that generate
674 overlong encoded strings. Why am I not surprised?
675
f0917727
PH
676PH/15 If the first argument of "${if match_address" was not empty, but did not
677 contain an "@" character, Exim crashed. Now it writes a panic log message
678 and treats the condition as false.
679
096fee00
PH
680PH/16 In autoreply, treat an empty string for "once" the same as unset.
681
024bd3c2
PH
682PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
683 extension "envelope-auth". The code is finished and in agreement with
684 other implementations, but there is no documentation so far and in fact,
685 nobody wrote the draft yet. This extension is currently #undef'ed, thus
686 not changing the active code.
687
688 Print executed "if" and "elsif" statements when debugging is used. This
689 helps a great deal to understand what a filter does.
690
691 Document more things not specified clearly in RFC3028. I had all this
692 sorted out, when out of a sudden new issues came to my mind. Oops."
693
df199fec
PH
694PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
695 (Bugzilla #53).
696
d27f1df3
PH
697PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
698 canonical form (as documented). However, after a host name lookup from
699 the IP address, check_host() was doing a simple string comparison with
700 addresses acquired from the DNS when checking that the found name did
701 have the original IP as one of its addresses. Since any found IPv6
702 addresses are likely to be in abbreviated form, the comparison could
703 fail. Luckily, there already exists a function for doing the comparison
704 by converting both addresses to binary, so now that is used instead of
705 the text comparison.
706
96776534
PH
707PH/20 There was another similar case to PH/19, when a complete host name was
708 given in a host list; looking up its IP address could give an abbreviated
709 form, whereas the current host's name might or might not be abbreviated.
710 The same fix has been applied.
711
5de37277 712
9a799bc0
PH
713Exim version 4.54
714-----------------
715
716PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
717 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
718 It now does.
719
99a4b039
PH
720PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
721 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
722
723PH/03 Typo: missing ".o" in src/pcre/Makefile.
724
4b233853
PH
725PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
726 header line, restrict the check to what is listed in RFCs 2369 and 2929.
727 Also, for "Auto-Submitted", treat anything other than "no" as
728 non-personal, in accordance with RFC 3834. (Previously it treated
729 anything starting "auto-" as non-personal.)
730
8857ccfd
PH
731TF/01 The control=submission/name=... option had a problem with syntax
732 errors if the name included a slash character. The /name= option
733 now slurps the rest of the string, so it can include any characters
734 but it must come last in the list of options (after /sender_retain
735 or /domain=).
736
433a2980
PH
737PH/05 Some modifications to the interface to the fake nameserver for the new
738 testing suite.
739
3e46c1aa 740
9a799bc0 741
e3a311ba
TK
742Exim version 4.53
743-----------------
744
745TK/01 Added the "success_on_redirect" address verification option. See
746 NewStuff for rationale and an example.
747
13b685f9
PH
748PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
749
395ff96d
PH
750PH/02 Patch to exigrep to allow it to work on syslog lines.
751
5b68f6e4
PH
752PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
753 fread() to skip over the body file's header line, because in Cygwin the
754 header line is locked and is inaccessible.
755
1ab52c69
PH
756PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
757 co-exist for some time) to make it clear that it is the Exim ID that is
758 referenced, not the Message-ID: header line.
759
b07e6aa3
PH
760PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
761 string_format() function, because snprintf() does not exist on all
762 operating systems.
763
254e032f
PH
764PH/06 The use of forbid_filter_existstest now also locks out the use of the
765 ${stat: expansion item.
766
3af76a81
PH
767PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
768 protocol synchronization error", to keep the pedants happy.
769
2548ba04
PH
770PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
771 well as for IRIX systems, when gcc is being used. See the host.c source
772 file for comments.
773
b6c6011d
PH
774PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
775
cf39cf57
PH
776PH/10 Named domain lists were not working if used in a queue_smtp_domains
777 setting.
778
f1513293
PH
779PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
780 transport and to the smtp transport in LMTP mode.
781
727549a4
PH
782TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
783
af46795e
PH
784PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
785 run a filter in a subprocess. This could lead to confusion in subsequent
786 lookups in the parent process. There should also be a search_tidyup() at
787 the end of the subprocess.
788
d7b47fd0
PH
789PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
790 only if the host matched helo_try_verify_hosts, which caused the
791 verification to occur when the EHLO/HELO command was issued. The ACL just
792 tested the remembered result. Now, if a previous verification attempt has
793 not happened, "verify = helo" does it there and then.
794
ee744174
JJ
795JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
796
b582ab87
PH
797TK/03 Fix log output including CR from clamd.
798
41a13e0a
PH
799PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
800 exist provoked a memory error which could cause a segfault.
801
f625cc5a
PH
802PH/15 Installed PCRE 6.2
803
804PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
805
21f7af35
PH
806PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
807 of the problem. Specifically, suggested +O2 rather than +O1 for the
808 HP-UX compiler.
809
31480e42
PH
810PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
811
2d280592
PH
812PH/20 If a delivery was routed to a non-standard port by means of an SRV
813 record, the port was not correctly logged when the outgoing_port log
814 selector was set (it logged the transort's default port).
815
7cd1141b
PH
816PH/21 Added support for host-specific ports to manualroute, queryprogram,
817 fallback_hosts, and "hosts" in the smtp transport.
818
819PH/22 If the log selector "outgoing_port" is set, the port is now also given on
820 host errors such as "Connection refused".
821
750af86e
PH
822PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
823 authentication with radiusclient 0.4.9:
824
825 - Error returned from rc_read_config was caught wrongly
826 - Username/password not passed on to radius server due to wrong length.
827
828 The presumption is that some radiusclient API changes for 4.51/PH/17
829 were not taken care of correctly. The code is still untested by me (my
830 Linux distribution still has 0.3.2 of radiusclient), but it was
831 contributed by a Radius user.
832
833PH/24 When doing a callout, the value of $domain wasn't set correctly when
834 expanding the "port" option of the smtp transport.
835
4304270b
TK
836TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
837 while reading a MIME header. Thanks to Tom Hughes for a patch.
838
750af86e
PH
839PH/24 Include config.h inside local_scan.h so that configuration settings are
840 available.
841
64ffc24f
PH
842PH/25 Make $smtp_command_argument available after all SMTP commands. This means
843 that in an ACL for RCPT (for example), you can examine exactly what was
844 received.
845
5dd9625b
PH
846PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
847 commands, but it was not correctly comparing the address with the actual
848 client host address. Thus, it would show the EHLO address in Received:
849 header lines when this was not necessary.
850
5591031b
PH
851PH/27 Added the % operator to ${eval:}.
852
ba18e66a
PH
853PH/28 Exim tries to create and chdir to its spool directory when it starts;
854 it should be ignoring failures (because with -C, for example, it has lost
855 privilege). It wasn't ignoring creation failures other than "already
856 exists".
857
9cec981f
PH
858PH/29 Added "crypteq" to the list of supported features that Exim outputs when
859 -bV or -d is used.
860
aa2b5c79
PH
861PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
862 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
863 too many continuations, the temporary file was not being removed, and the
864 return code was incorrect.
aa2b5c79 865
48a53b7f
PH
866PH/31 Missing "BOOL" in function definition in filtertest.c.
867
1c59d63b
PH
868PH/32 Applied Sieve patches from the maintainer.
869
671012da
TK
870TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
871
1509d3a8
PH
872PH/33 Added "verify = not_blind".
873
874PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
875 Local/Makefile (with some defaults set). These are used in built scripts
876 such as exicyclog, but they have never been used in the exim_install
877 script (though there are many overriding facilities there). I have
878 arranged that the exim_install script now takes note of these two
879 settings.
880
881PH/35 Installed configuration files for Dragonfly.
882
2fe1a124
PH
883PH/36 When a locally submitted message by a trusted user did not contain a
884 From: header, and the sender address was obtained from -f or from an SMTP
885 MAIL command, and the trusted user did not use -F to supply a sender
886 name, $originator_name was incorrectly used when constructing a From:
887 header. Furthermore, $originator_name was used for submission mode
888 messages from external hosts without From: headers in a similar way,
889 which is clearly wrong.
890
8800895a
PH
891PH/37 Added control=suppress_local_fixups.
892
ccfdb010
PH
893PH/38 When log_selector = +received_sender was set, and the addition of the
894 sender made the log line's construction buffer exactly full, or one byte
895 less than full, an overflow happened when the terminating "\n" was
896 subsequently added.
897
1130bfb0
PH
898PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
899 when the result of a list match is failure because a DNS lookup failed.
900
ebcb507f
PH
901PH/40 RM_COMMAND is now used in the building process.
902
c35e155c
PH
903PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
904 the "build-* directories that it finds.
905
95d1f782
PH
906PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
907 address in a domain literal was a prefix of an interface address.
908
fd6de02e
PH
909PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
910 when verifying a sender address, unless rewrite_headers is false.
911
58de37c5
PH
912PH/44 Wrote a long comment about why errors_to addresses are verified as
913 recipients, not senders.
914
261cf466
TF
915TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
916 the ratelimit ACL was added.
917
3ee512ff
PH
918PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
919
e08c430f
PH
920PH/46 Added extra information about PostgreSQL errors to the error string.
921
bef5a11f
PH
922PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
923 avoiding the need to install special zones in a real server. This is
924 backwards compatible; if it can't find the fake resolver, it drops back.
925 Thus, both old and new test suites can be run.
926
7546de58
TF
927TF/02 Added util/ratelimit.pl
928
e5d5a95f
TF
929TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
930 clock is set back in time.
931
2e88a017
TF
932TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
933 Candler <B.Candler@pobox.com>.
934
a5f65aa4
TF
935TF/05 The fix for PH/43 was not completely correct; widen_domains is always
936 OK for addresses that are the result of redirections.
937
e7726cbf
PH
938PH/48 A number of further additions for the benefit of the new test suite,
939 including a fake gethostbyname() that interfaces to the fake DNS resolver
940 (see PH/47 above).
941
a7fdad5b
TF
942TF/06 The fix for widen_domains has also been applied to qualify_single and
943 search_parents which are the other dnslookup options that can cause
944 header rewrites.
945
6af56900
PH
946PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
947 type ("H").
948
0925ede6
PH
949PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
950
66afa403
TF
951TF/07 Exim produced the error message "an SRV record indicated no SMTP
952 service" if it encountered an MX record with an empty target hostname.
953 The message is now "an MX or SRV record indicated no SMTP service".
954
0154e85a
TF
955TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
956 if the DNS of the sending site is misconfigured. This is quite a
957 common situation. This change restores the behaviour of treating a
958 helo verification defer as a failure.
959
16f12c76
PH
960PH/51 If self=fail was set on a router, the bounce message did not include the
961 actual error message.
962
bbe902f0 963
e5a9dba6
PH
964Exim version 4.52
965-----------------
966
967TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
968
22c3b60b
PH
969PH/01 When a transport filter timed out in a pipe delivery, and the pipe
970 command itself ended in error, the underlying message about the transport
971 filter timeout was being overwritten with the pipe command error. Now the
972 underlying error message should be appended to the second error message.
973
06a9b4b5
PH
974TK/01 Fix poll() being unavailable on Mac OSX 10.2.
975
c1ac6996
PH
976PH/02 Reduce the amount of output that "make" produces by default. Full output
977 can still be requested.
978
9c7a242c
PH
979PH/03 The warning log line about a condition test deferring for a "warn" verb
980 was being output only once per connection, rather than after each
981 occurrence (because it was using the same function as for successful
982 "warn" verbs). This seems wrong, so I have changed it.
983
87ba3f5f
PH
984TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
985 it should not have, which might have caused a crash in the right
986 circumstances, but probably never did.
987
988PH/04 Installed a modified version of Tony Finch's patch to make submission
989 mode fix the return path as well as the Sender: header line, and to
990 add a /name= option so that you can make the user's friendly name appear
991 in the header line.
992
29aba418
TF
993TF/03 Added the control = fakedefer ACL modifier.
994
fe0dab11
TF
995TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
996 Mark Lowes for thorough testing.
870f6ba8 997
11d337a4
TK
998TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
999
1000TK/03 Merged latest SRS patch from Miles Wilton.
1001
415c8f3b
PH
1002PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1003 with the definition in sysexits.h (which is #included earlier).
1004 Fortunately, Exim does not actually use EX_OK. The code used to try to
1005 preserve the sysexits.h value, by assumimg that macro definitions were
1006 scanned for macro replacements. I have been disabused of this notion,
1007 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1008
958541e9
PH
1009PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1010 in the smtp transport. When a block could not be written in a single
1011 write() function, the timeout was being re-applied to each part-write.
1012 This seems wrong - if the receiver was accepting one byte at a time it
1013 would take for ever. The timeout is now adjusted when this happens. It
1014 doesn't have to be particularly precise.
1015
c206415f
TK
1016TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1017 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1018
2a4be8f9
PH
1019PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1020 without a domain if the check to <postmaster@domain> fails.
1021
1cba11c5
SC
1022SC/01 Eximstats: added -xls and the ability to specify output files
1023 (patch written by Frank Heydlauf).
1024
1025SC/02 Eximstats: use FileHandles for outputing results.
1026
1027SC/03 Eximstats: allow any combination of xls, txt, and html output.
1028
1029SC/04 Eximstats: fixed display of large numbers with -nvr option
1030
1031SC/05 Eximstats: fixed merging of reports with empty tables.
1032
1033SC/06 Eximstats: added the -include_original_destination flag
1034
1035SC/07 Eximstats: removed tabs and trailing whitespace.
1036
1005d00e
TK
1037TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1038
1039TK/06 MBOX spool code: Add real "From " MBOX separator line
1040 so the .eml file is really in mbox format (even though
1041 most programs do not really care). Patch from Alex Miller.
1042
1043TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1044 The latter is generated from $received_to and is only set if the
1045 message has one envelope recipient. SA can use these headers,
1046 obviously out-of-the-box. Patch from Alex Miller.
1047
9b4768fa
PH
1048PH/08 The ${def test on a variable was returning false if the variable's
1049 value was "0", contrary to what the specification has always said!
1050 The result should be true unless the variable is empty.
1051
1052PH/09 The syntax error of a character other than { following "${if
1053 def:variable_name" (after optional whitespace) was not being diagnosed.
1054 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1055 accidental colon was present, for example, could give incorrect results.
1056
0d7eb84a
PH
1057PH/10 Tidied the code in a number of places where the st_size field of a stat()
1058 result is used (not including appendfile, where other changes are about
1059 to be made).
1060
1061PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1062 This involved changing a lot of size variables from int to off_t. It
1063 should work with maildirs and everything.
1064
40727bee
TK
1065TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1066 spamd dying while we are connected to it.
1067
554d2369
TF
1068TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1069 <jgh@wizmail.org>
1070
1f922db1
PH
1071PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1072 function for BDB 4.3.
1073
ef213c3b
PH
1074PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1075
8ac170f3
PH
1076PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1077 the sources for PCRE have been re-arranged and more files are now
1078 involved.
1079
b1c749bb
PH
1080PH/15 The code I had for printing potentially long long variables in PH/11
1081 above was not the best (it lost precision). The length of off_t variables
1082 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1083 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1084 to be "long long int" or "long int". This is needed for the internal
1085 formatting function string_vformat().
b1c749bb 1086
4aac9b49
PH
1087PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1088 the configuration file to be ":syslog", then the script "guesses" where
1089 the logs files are, rather than using the compiled in default. In our
1090 case the guess is not the same as the compiled default, so the script
1091 suddenly stopped working when I started to use syslog. The patch checks
1092 to see if log_file_path is "". If so, it attempts to read it from exim
1093 with no configuration file to get the compiled in version, before it
1094 falls back to the previous guessing code."
1095
294520c8
TK
1096TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1097 implementing BATV in an Exim configuration. See NewStuff for the gory
1098 details.
1099
5bd022fe
PH
1100PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1101 Makefile that are specific to HP-UX.
1102
90e9ce59
PH
1103PH/18 If the "use_postmaster" option was set for a recipient callout together
1104 with the "random" option, the postmaster address was used as the MAIL
1105 FROM address for the random test, but not for the subsequent recipient
1106 test. It is now used for both.
1107
5ea81592
PH
1108PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1109 patch removes a few documentation additions to RFC 3028, because the
1110 latest draft now contains them. It adds the new en;ascii-case comparator
1111 and a new error check for 8bit text in MIME parts. Comparator and
1112 require names are now matched exactly. I enabled the subaddress
1113 extension, but it is not well tested yet (read: it works for me)."
1114
c6c2dc1d
PH
1115PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1116 rework some of the code of TK/09 above to avoid the hardwired use of
1117 "%lld" and "long long". Replaced the call to snprintf() with a call to
1118 string_vformat().
1119
fffffe4c
PH
1120PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1121 records point to non-existent hosts", "retry timeout exceeded", and
1122 "retry time not reached for any host after a long failure period".
ca02eafb 1123
9a26b6b2
PH
1124PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1125 experimental DomainKeys support:
1126
1127 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1128 (2) On an error such as an illegally used "control", the wrong name for
1129 the control was given.
1130
1131 These problems did NOT occur unless DomainKeys support was compiled.
1132
4aee0225
PH
1133PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1134
32d668a5
PH
1135PH/24 Added ${if match_ip condition.
1136
8187c3f3
PH
1137PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1138 databases so that it will be absolutely obvious if a crash occurs in the
1139 DB library. This is a regular occurrence (often caused by mis-matched
1140 db.h files).
1141
ff790e47 1142PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1143 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1144 picked up on a user's system that detects such things. There doesn't seem
1145 to be a gcc warning option for this - only an attribute that has to be
1146 put on the function's prototype. It seems that in Fedora Core 4 they have
1147 set this on a number of new functions. No doubt there will be more in due
1148 course.
ff790e47 1149
5417f6d1
PH
1150PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1151 specify a transport. However, if an address that was verified by such a
1152 router was the subject of a callout, Exim crashed because it tried to
1153 read the rcpt_include_affixes from the non-existent transport. Now it
1154 just assumes that the setting of that option is false. This bug was
1155 introduced by 4.51/PH/31.
1156
59cf8544
PH
1157PH/28 Changed -d+all to exclude +memory, because that information is very
1158 rarely of interest, but it makes the output a lot bigger. People tend to
1159 do -d+all out of habit.
1160
e7ad8a65
PH
1161PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1162 code in os-type was giving problems when libc.so lives in lib64, like on
1163 x86_64 Fedora Core.
1164
ade42478
PH
1165PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1166 aren't the modern standard, and it seems that some systems' include files
1167 don't always have them. Exim was already checking for some of the newer
1168 ones like T_AAAA, and defining it itself. I've added checks for all the
1169 record types that Exim uses.
1170
182ad5cf
PH
1171PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1172 not automatically generating a new one, as it is supposed to. This
1173 prevented TLS from working. If the file did exist, but contained invalid
1174 data, a new version was generated, as expected. It was only the case of a
1175 non-existent file that was broken.
1176
b0d9fc80
TK
1177TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1178 with a change in libdomainkeys > 0.64.
1179
1180TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1181 from DNS. If the selector record carries the flag, it now has
1182 precedence over the domain-wide flag.
1183
1184TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1185
47c7a64a
PH
1186PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1187 the use of a port name that isn't defined in /etc/services) occurred, the
1188 message was deferred as in a normal delivery, and thus remained on the
1189 spool, instead of being failed because of the mua_wrapper setting. This
1190 is now fixed, and I tidied up some of the mua_wrapper messages at the
1191 same time.
1192
a388bce4
SC
1193SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1194 the messages in a hash of arrays rather than using individual hashes.
1195 This is a bit cleaner and results in dramatic memory savings, albeit
1196 at a slight CPU cost.
1197
1198SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1199 as requested by Marc Sherman.
1200
1201SC/10 Eximstats: added histograms for user specified patterns as requested
1202 by Marc Sherman.
1203
0793e4ed
SC
1204SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1205
c58b88df
PH
1206PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1207 fopen() in the content-scanning modules that did not already have it.
1208
e7ad8a65 1209
7982096b
PH
1210Exim version 4.51
1211-----------------
1212
1a46a8c5
PH
1213TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1214 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1215
2f079f46 1216TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1217
1218TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1219
1220PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1221 to test Sieve filters that use "vacation".
1222
1223PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1224 that changes the way the GnuTLS parameters are stored in the cache file.
1225 The new format can be generated externally. For backward compatibility,
1226 if the data in the cache doesn't make sense, Exim assumes it has read an
1227 old-format file, and it generates new data and writes a new file. This
1228 means that you can't go back to an older release without removing the
1229 file.
1230
1231PH/03 A redirect router that has both "unseen" and "one_time" set does not
1232 work if there are any delivery delays because "one_time" forces the
1233 parent to be marked "delivered", so its unseen clone is never tried
1234 again. For this reason, Exim now forbids the simultaneous setting of
1235 these two options.
1236
1237PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1238 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1239 entry if you want to know the details. The fix, however, neglected to
1240 consider the case when local delivery batching is involved. The test for
1241 "previously delivered" was not happening when checking to see if an
1242 address could be batched with a previous (undelivered) one; under
1243 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1244 address.
1a46a8c5
PH
1245
1246PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1247 in its include files, and this causes problems building Exim.
1248
1249PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1250 header_syntax) but Exim was just ignoring anything given after a slash.
1251 In particular, this caused confusion with an attempt to use "verify =
1252 reverse_host_lookup/defer_ok". An error is now given when options are
1253 supplied for verify items that do not have them. (Maybe reverse_host_
1254 lookup should have a defer_ok option, but that's a different point.)
1255
1256PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1257 defined by RFC 821) to 2048, because there were problems with some AUTH
1258 commands, and RFC 1869 says the size should be increased for extended
1259 SMTP commands that take arguments.
1260
1261PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1262 Finch).
1263
1264PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1265 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1266
49c2d5ea
PH
1267PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1268 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1269 whatever). Otherwise the password may appear in the log. Following change
1270 PH/42 below, there is no longer a chance of it appearing in a bounce
1271 message.
49c2d5ea 1272
bf759a8b
PH
1273PH/11 Installed exipick version 20050225.0 from John Jetmore.
1274
83364d30
PH
1275PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1276 of its addresses was ever tried. (Bugzilla bug #2.)
1277
7999bbd7
PH
1278PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1279 the result incorrectly in the debug output. (It correctly added a newline
1280 to what was transported.)
1281
7dbf77c9
PH
1282TF/01 Added $received_time.
1283
74e0617f
PH
1284PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1285 commented out examples of how to interface to a virus scanner and to
1286 SpamAssassin. Also added commented examples of av_scanner and
1287 spamd_address settings.
1288
2f079f46
PH
1289PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1290 and controls are allowed in which ACLs. There were a couple of minor
1291 errors. Some of the entries in the conditions table (which is a table of
1292 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1293 negation of where the condition IS allowed.
1294
8c841523
PH
1295PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1296
7766a4f0
PH
1297PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1298 header file does not have a version number, so I've had to invent a new
1299 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1300 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1301 radiusclient), but it was contributed by a Radius user.
1302
8b417f2c
PH
1303PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1304 files or directories, for OpenSSL.
1305
901f42cb
PH
1306PH/19 When an Exim process that is running as root has to create an Exim log
1307 file, it does so in a subprocess that runs as exim:exim so as to get the
1308 ownership right at creation (otherwise, other Exim processes might see
1309 the file with the wrong ownership). There was no test for failure of this
1310 fork() call, which would lead to the process getting stuck as it waited
1311 for a non-existent subprocess. Forks do occasionally fail when resources
1312 run out. I reviewed all the other calls to fork(); they all seem to check
1313 for failure.
1314
f9b9210e
PH
1315PH/20 When checking for unexpected SMTP input at connect time (before writing
1316 the banner), Exim was not dealing correctly with a non-positive return
1317 from the read() function. If the client had disconnected by this time,
1318 the result was a log entry for a synchronization error with an empty
1319 string after "input=" when read() returned zero. If read() returned -1
1320 (an event I could not check), uninitialized data bytes were printed.
1321 There were reports of junk text (parts of files, etc) appearing after
1322 "input=".
1323
54cdb463
PH
1324PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1325
cf00dad6
PH
1326PH/22 Added support for macro redefinition, and (re)definition in between
1327 driver and ACL definitions.
1328
acb1b346
PH
1329PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1330 forgetting to use the resulting value; it was using the unexpanded value.
1331
c5ddb310
PH
1332PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1333 hadn't been configured. The fix is from Juergen Kreileder, who
1334 understands it better than I do:
1335
1336 "Here's what I see happening with three configured cyrus_sasl
1337 authenticators configured (plain, login, cram-md5):
1338
1339 On startup auth_cyrus_sasl_init() gets called for each of these.
1340 This means three calls to sasl_listmech() without a specified mech_list.
1341 => SASL tests which mechs of all available mechs actually work
1342 => three warnings about OTP not working
1343 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1344
1345 With the patch, sasl_listmech() also gets called three times. But now
1346 SASL's mech_list option is set to the server_mech specified in the the
1347 authenticator. Or in other words, the answer from sasl_listmech()
1348 gets limited to just the mech you're testing for (which is different
1349 for each call.)
1350 => the return list contains just 'plain' or 'login', 'cram-md5' or
1351 nothing depending on the value of ob->server_mech.
1352
1353 I've just tested the patch: Authentication still works fine,
1354 unavailable mechs specified in the exim configuration are still
1355 caught, and the auth.log warnings about OTP are gone."
1356
31619da6
PH
1357PH/25 When debugging is enabled, the contents of the command line are added
1358 to the debugging output, even when log_selector=+arguments is not
1359 specified.
1360
bebaf0fc
PH
1361PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1362 answer is "GNU", and only if the return is "GNU/something" is the answer
1363 "Linux".
1364
475fe28a
PH
1365PH/27 $acl_verify_message is now set immediately after the failure of a
1366 verification in an ACL, and so is available in subsequent modifiers. In
1367 particular, the message can be preserved by coding like this:
1368
1369 warn !verify = sender
1370 set acl_m0 = $acl_verify_message
1371
1372 Previously, $acl_verify_message was set only while expanding "message"
1373 and "log_message" when a very denied access.
1374
7e8bec7a
PH
1375PH/28 Modified OS/os.c-Linux with
1376
1377 -#ifndef OS_LOAD_AVERAGE
1378 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1379
1380 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1381 nomenclature these days.)
1382
e4a89c47
PH
1383PH/29 Installed patch from the Sieve maintainer that adds the options
1384 sieve_useraddress and sieve_subaddress to the redirect router.
1385
5ca2a9a1
PH
1386PH/30 In these circumstances:
1387 . Two addresses routed to the same list of hosts;
1388 . First host does not offer TLS;
1389 . First host accepts first address;
1390 . First host gives temporary error to second address;
1391 . Second host offers TLS and a TLS session is established;
1392 . Second host accepts second address.
1393 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1394 and peerdn, if requested) that were in fact used only for the second
1395 address.
7e8bec7a 1396
c688b954
PH
1397PH/31 When doing a callout as part of verifying an address, Exim was not paying
1398 attention to any local part prefix or suffix that was matched by the
1399 router that accepted the address. It now behaves in the same way as it
1400 does for delivery: the affixes are removed from the local part unless
1401 rcpt_include_affixes is set on the transport.
1402
fed77020
PH
1403PH/32 Add the sender address, as F=<...>, to the log line when logging a
1404 timeout during the DATA phase of an incoming message.
1405
7fe1560f
PH
1406PH/33 Sieve envelope tests were broken for match types other than :is. I have
1407 applied a patch sanctioned by the Sieve maintainer.
c688b954 1408
ebb6e6d5
PH
1409PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1410 the uid or gid is negative. A case of a negative gid caused this to be
1411 noticed. The fix allows for either to be negative.
1412
9c4e8f60
PH
1413PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1414 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1415 overlooked.
1416
1417PH/36 The change PH/12 above was broken. Fixed it.
1418
d7174846
PH
1419PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1420 the grounds that routing the same address twice would always produce the
1421 same answer. This might have been true once, but it is certainly no
1422 longer true now. Routing a child address may depend on the previous
1423 routing that produced that child. Some complicated redirection strategies
1424 went wrong when messages had multiple recipients, and made Exim's
1425 behaviour dependent on the order in which the addresses were given.
1426
1427 I have moved the duplicate checking until after the routing is complete.
1428 Exim scans the addresses that are assigned to local and remote
1429 transports, and removes any duplicates. This means that more work will be
1430 done, as duplicates will always all be routed, but duplicates are
1431 presumably rare, so I don't expect this is of any significance.
1432
1433 For deliveries to pipes, files, and autoreplies, the duplicate checking
1434 still happens during the routing process, since they are not going to be
1435 routed further.
1436
cfe75fc3
PH
1437PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1438 It corrects a timeout issue with spamd. This is Ian's comment: "The
1439 background is that sometimes spamd either never reads data from a
1440 connection it has accepted, or it never writes response data. The exiscan
1441 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1442 blindly assumes that writes won't block so it may never time out."
1443
be22d70e
PH
1444PH/39 Allow G after quota size as well as K and M.
1445
0612b098
PH
1446PH/40 The value set for $authenticated_id in an authenticator may not contain
1447 binary zeroes or newlines because the value is written to log lines and
1448 to spool files. There was no check on this. Now the value is run through
1449 the string_printing() function so that such characters are converted to
1450 printable escape sequences.
1451
2e0c1448
PH
1452PH/41 $message_linecount is a new variable that contains the total number of
1453 lines in the message. Compare $body_linecount, which is the count for the
1454 body only.
1455
447d236c
PH
1456PH/42 Exim no longer gives details of delivery errors for specific addresses in
1457 bounce and delay warning messages, except in certain special cases, which
1458 are as follows:
1459
1460 (a) An SMTP error message from a remote host;
1461 (b) A message specified in a :fail: redirection;
1462 (c) A message specified in a "fail" command in a system filter;
1463 (d) A message specified in a FAIL return from the queryprogram router;
1464 (e) A message specified by the cannot_route_message router option.
1465
1466 In these cases only, Exim does include the error details in bounce and
1467 warning messages. There are also a few cases where bland messages such
1468 as "unrouteable address" or "local delivery error" are given.
1469
d20976dc
PH
1470PH/43 $value is now also set for the "else" part of a ${run expansion.
1471
f656d135
PH
1472PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1473 being worked on, but at least Exim now implements the latest version to
1474 play with."
1475
2e2a30b4
PH
1476PH/45 In a pipe transport, although a timeout while waiting for the pipe
1477 process to complete was treated as a delivery failure, a timeout while
1478 writing the message to the pipe was logged, but erroneously treated as a
1479 successful delivery. Such timeouts include transport filter timeouts. For
1480 consistency with the overall process timeout, these timeouts are now
1481 treated as errors, giving rise to delivery failures by default. However,
1482 there is now a new Boolean option for the pipe transport called
1483 timeout_defer, which, if set TRUE, converts the failures into defers for
1484 both kinds of timeout. A transport filter timeout is now identified in
1485 the log output.
1486
9176e9f0
PH
1487PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1488 systems where "make" and "gmake" are different, calling "gmake" at top
1489 level broke things. I've arranged for the value of $(MAKE) to be passed
1490 from the Makefile to this script so that it can call the same version of
1491 "make".
1492
7982096b 1493
bbe902f0
PH
1494A note about Exim versions 4.44 and 4.50
1495----------------------------------------
1496
1497Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1498changes of various kinds. As a consequence, a big documentation update was
1499needed. This delayed the release for rather longer than seemed good, especially
1500in the light of a couple of (minor) security issues. Therefore, the changes
1501that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1502release. So 4.44 and 4.50 are in effect two different branches that both start
1503from 4.43.
1504
1505I have left the 4.50 change log unchanged; it contains all the changes since
15064.43. The change log for 4.44 is below; many of its items are identical to
1507those for 4.50. This seems to be the most sensible way to preserve the
1508historical information.
1509
1510
f7b63901 1511Exim version 4.50
495ae4b0
PH
1512-----------------
1513
5fe762f6
PH
1514 1. Minor wording change to the doc/README.SIEVE file.
1515
139059f6 1516 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1517 computation of the current number of files was incorrect.
495ae4b0 1518
7086e875
PH
1519 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1520 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1521 place.
1522
35af9f61
PH
1523 4. Give more explanation in the error message when the command for a transport
1524 filter fails to execute.
1525
b668c215
PH
1526 5. There are several places where Exim runs a non-Exim command in a
1527 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1528 was being done only for the command run by the queryprogram router. It is
1529 now done for all such subprocesses. The other cases are: ${run, transport
1530 filters, and the commands run by the lmtp and pipe transports.
1531
a494b1e1
PH
1532 6. Added CONFIGURE_GROUP build-time option.
1533
1534 7. Some older OS have a limit of 256 on the maximum number of file
1535 descriptors. Exim was using setrlimit() to set 1000 as a large value
1536 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1537 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1538
c5fcb476
PH
1539 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1540 was an oversight, and furthermore, ever since the addition of extra
1541 controls (e.g. 4.43/32), the checks on when to allow different forms of
1542 "control" were broken. There should now be diagnostics for all cases when a
1543 control that does not make sense is encountered.
1544
69358f02
PH
1545 9. Added the /retain_sender option to "control=submission".
1546
5be20824
PH
154710. $recipients is now available in the predata ACL (oversight).
1548
eb2c0248
PH
154911. Tidy the search cache before the fork to do a delivery from a message
1550 received from the command line. Otherwise the child will trigger a lookup
1551 failure and thereby defer the delivery if it tries to use (for example) a
1552 cached ldap connection that the parent has called unbind on.
1553
2a3eea10
PH
155412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1555 of $address_data from the recipient verification was clobbered by the
1556 sender verification.
1557
155813. The value of address_data from a sender verification is now available in
1559 $sender_address_data in subsequent conditions in the ACL statement.
1560
23c7ff99
PH
156114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1562
4deaf07d
PH
156315. Added a new option "connect=<time>" to callout options, to set a different
1564 connection timeout.
1565
926e1192
PH
156616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1567 was its contents. (It was OK if the option was not defined at all.)
1568
650edc6f
PH
156917. A "Completed" log line is now written for messages that are removed from
1570 the spool by the -Mrm option.
1571
2c7db3f5
PH
157218. New variables $sender_verify_failure and $recipient_verify_failure contain
1573 information about exactly what failed.
1574
3d235903
PH
157519. Added -dd to debug only the daemon process.
1576
7c7ad977
PH
157720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1578 handles timeouts, both on the server side and network timeouts. Renamed the
1579 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1580
981756db
PH
158121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1582 It is now set to "smtps".
1583
d4eb88df
PH
158422. $host_address is now set to the target address during the checking of
1585 ignore_target_hosts.
1586
158723. When checking ignore_target_hosts for an ipliteral router, no host name was
1588 being passed; this would have caused $sender_host_name to have been used if
1589 matching the list had actually called for a host name (not very likely,
1590 since this list is usually IP addresses). A host name is now passed as
1591 "[x.x.x.x]".
1592
7d468ab8
PH
159324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1594 code that specifies a non-restarting handler (typically sigaction() in
1595 modern systems) in an attempt to fix a rare and obscure crash bug.
1596
159725. Narrowed the window for a race in the daemon that could cause it to ignore
1598 SIGCHLD signals. This is not a major problem, because they are used only to
1599 wake it up if nothing else does.
1600
62c0818f
PH
160126. A malformed maildirsize file could cause Exim to calculate negative values
1602 for the mailbox size or file count. Odd effects could occur as a result.
1603 The maildirsize information is now recalculated if the size or filecount
1604 end up negative.
1605
26034054
PH
160627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1607 support for a long time. Removed HAVE_SYS_VFS_H.
1608
af66f652
PH
160928. Installed the latest version of exipick from John Jetmore.
1610
90af77f4
PH
161129. In an address list, if the pattern was not a regular expression, an empty
1612 subject address (from a bounce message) matched only if the pattern was an
1613 empty string. Non-empty patterns were not even tested. This was the wrong
1614 because it is perfectly reasonable to use an empty address as part of a
1615 database query. An empty address is now tested by patterns that are
1616 lookups. However, all the other forms of pattern expect the subject to
1617 contain a local part and a domain, and therefore, for them, an empty
1618 address still always fails if the pattern is not itself empty.
1619
d8ef3577
PH
162030. Exim went into a mad DNS loop when attempting to do a callout where the
1621 host was specified on an smtp transport, and looking it up yielded more
1622 than one IP address.
1623
5cb8cbc6
PH
162431. Re-factored the code for checking spool and log partition space into a
1625 function that finds that data and another that does the check. The former
1626 is then used to implement four new variables: $spool_space, $log_space,
1627 $spool_inodes, and $log_inodes.
1628
14702f5b
PH
162932. The RFC2047 encoding function was originally intended for short strings
1630 such as real names; it was not keeping to the 75-character limit for
1631 encoded words that the RFC imposes. It now respects the limit, and
1632 generates multiple encoded words if necessary. To be on the safe side, I
1633 have increased the buffer size for the ${rfc2047: expansion operator from
1634 1024 to 2048 bytes.
1635
063b1e99
PH
163633. It is now permitted to omit both strings after an "if" condition; if the
1637 condition is true, the result is "true". As before, when the second string
1638 is omitted, a false condition yields an empty string. This makes it less
1639 cumbersome to write custom ACL and router conditions.
1640
652e1b65
PH
164134. Failure to deliver a bounce message always caused it to be frozen, even if
1642 there was an errors_to setting on the router. The errors_to setting is now
1643 respected.
1644
6f0c9a4f
PH
164535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1646 canonical form (fully expanded) before being placed in
1647 $sender_host_address.
1648
33397d19
PH
164936. The table in the code that translates DNS record types into text (T_A to
1650 "A" for instance) was missing entries for NS and CNAME. It is just possible
1651 that this could have caused confusion if both these types were looked up
1652 for the same domain, because the text type is used as part of Exim's
1653 per-process caching. But the chance of anyone hitting this buglet seems
1654 very small.
1655
7bb56e1f
PH
165637. The dnsdb lookup has been extended in a number of ways.
1657
1658 (1) There is a new type, "zns", which walks up the domain tree until it
1659 finds some nameserver records. It should be used with care.
1660
ea3bc19b
PH
1661 (2) There is a new type, "mxh", which is like "mx" except that it returns
1662 just the host names, not the priorities.
1663
1664 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1665 looked up. The behaviour when one of the lookups defers can be
1666 controlled by a keyword.
7bb56e1f 1667
ea3bc19b 1668 (4) It is now possible to specify the separator character for use when
7bb56e1f 1669 multiple records are returned.
33397d19 1670
0bcb2a0e
PH
167138. The dnslists ACL condition has been extended: it is now possible to supply
1672 a list of IP addresses and/or domains to be looked up in a particular DNS
1673 domain.
1674
2ac0e484
PH
167539. Added log_selector=+queue_time_overall.
1676
4e1fde53
PH
167740. When running the queue in the test harness, wait just a tad after forking a
1678 delivery process, to get repeatability of debugging output.
1679
de365ded
PH
168041. Include certificate and key file names in error message when GnuTLS fails
1681 to set them up, because the GnuTLS error message doesn't include the name
1682 of the failing file when there is a problem reading it.
1683
f05da2e8
PH
168442. Allow both -bf and -bF in the same test run.
1685
d6453af2
PH
168643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1687
f7b63901
PH
168844. The "Exiscan patch" is now merged into the mainline Exim source.
1689
169045. Sometimes the final signoff response after QUIT could fail to get
1691 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1692 < 0 before doing a fflush(). This bug looks as though it goes back to the
1693 introduction of TLS in release 3.20, but "sometimes" must have been rare
1694 because the tests only now provoked it.
1695
a444213a
PH
169646. Reset the locale to "C" after calling embedded Perl, in case it was changed
1697 (this can affect the format of dates).
1698
0ec020ea
PH
169947. exim_tidydb, when checking for the continued existence of a message for
1700 which it has found a message-specific retry record, was not finding
1701 messages that were in split spool directories. Consequently, it was
1702 deleting retry records that should have stayed in existence.
1703
b1206957
PH
170448. Steve fixed some bugs in eximstats.
1705
170649. The SPA authentication driver was not abandoning authentication and moving
1707 on to the next authenticator when an expansion was forced to fail,
1708 contradicting the general specification for all authenticators. Instead it
1709 was generating a temporary error. It now behaves as specified.
1710
26dd5a95
PH
171150. The default ordering of permitted cipher suites for GnuTLS was pessimal
1712 (the order specifies the preference for clients). The order is now AES256,
1713 AES128, 3DES, ARCFOUR128.
1714
343b2385
PH
171551. Small patch to Sieve code - explicitly set From: when generating an
1716 autoreply.
1717
1c5466b9
PH
171852. Exim crashed if a remote delivery caused a very long error message to be
1719 recorded - for instance if somebody sent an entire SpamAssassin report back
1720 as a large number of 550 error lines. This bug was coincidentally fixed by
1721 increasing the size of one of Exim's internal buffers (big_buffer) that
1722 happened as part of the Exiscan merge. However, to be on the safe side, I
1723 have made the code more robust (and fixed the comments that describe what
1724 is going on).
1725
55ee9ee3
PH
172653. Now that there can be additional text after "Completed" in log lines (if
1727 the queue_time_overall log selector is set), a one-byte patch to exigrep
1728 was needed to allow it to recognize "Completed" as not the last thing in
1729 the line.
1730
d38f8232
PH
173154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1732 patch that reportedly fixes this has been added. I am not expert enough to
1733 create a test for it. This is what the patch creator wrote:
1734
1735 "I found a little strange behaviour of ldap code when working with
1736 Windows 2003 AD Domain, where users was placed in more than one
1737 Organization Units. When I tried to give exim partial DN, the exit code
1738 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1739 But simultaneously result of request was absolutely normal ldap result,
1740 so I produce this patch..."
1741
3295e65b
PH
1742 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1743 REFERENCE, so I have modified the code to exclude the patch when that macro
1744 is not defined.
1745
7102e136
PH
174655. Some experimental protocols are using DNS PTR records for new purposes. The
1747 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1748 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1749 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1750 CAN-2005-0021
7102e136 1751
3ca0ba97
PH
175256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1753
c2bcbe20
PH
175457. Double the size of the debug message buffer (to 2048) so that more of very
1755 long debug lines gets shown.
1756
18ce445d
PH
175758. The exicyclog utility now does better if the number of log files to keep
1758 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1759
1f5b4c3d
PH
176059. Two changes related to the smtp_active_hostname option:
1761
1762 (1) $smtp_active_hostname is now available as a variable.
1763 (2) The default for smtp_banner uses $smtp_active_hostname instead
1764 of $primary_hostname.
1765
b975ba52
PH
176660. The host_aton() function is supposed to be passed a string that is known
1767 to be a valid IP address. However, in the case of IPv6 addresses, it was
1768 not checking this. This is a hostage to fortune. Exim now panics and dies
1769 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1770 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1771 components; fortuitously, this particular loophole had already been fixed
1772 by change 4.50/55 above.
1773
1774 If there are any other similar loopholes, the new check in host_aton()
1775 itself should stop them being exploited. The report I received stated that
1776 data on the command line could provoke the exploit when Exim was running as
1777 exim, but did not say which command line option was involved. All I could
1778 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1779 running as the user.
ea3a6f44 1780 CAN-2005-0021
85b87bc2
PH
1781
178261. There was a buffer overflow vulnerability in the SPA authentication code
1783 (which came originally from the Samba project). I have added a test to the
1784 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1785 CAN-2005-0022
b975ba52 1786
17ffcae7
PH
178762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1788 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1789
d95f9fdb
PH
179063. The daemon start-up calls getloadavg() while still root for those OS that
1791 need the first call to be done as root, but it missed one case: when
1792 deliver_queue_load_max is set with deliver_drop_privilege. This is
1793 necessary for the benefit of the queue runner, because there is no re-exec
1794 when deliver_drop_privilege is set.
1795
86b8287f
PH
179664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1797 This has been fixed.
1798
60dc5e56
PH
179965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1800 was in use, was not putting the data itself into the right store pool;
1801 consequently, it could be overwritten for a subsequent message in the same
1802 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1803 the caching.)
1804
533244af
PH
180566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1806
a5a28604
PH
180767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1808 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1809 the function were treating the return as a boolean value, which happened to
1810 work because 0=false and not-0=true, but is not correct code.
1811
7e634d24
PH
181268. The host_aton() function was not handling scoped IPv6 addresses (those
1813 with, for example, "%eth0" on the end) correctly.
1814
3e11c26b
PH
181569. Fixed some compiler warnings in acl.c for the bitmaps specified with
1816 negated items (that is, ~something) in unsigned ints. Some compilers
1817 apparently mutter when there is no cast.
1818
6729cf78
PH
181970. If an address verification called from an ACL failed, and did not produce a
1820 user-specific message (i.e. there was only a "system" message), nothing was
1821 put in $acl_verify_message. In this situation, it now puts the system
1822 message there.
1823
00f00ca5
PH
182471. Change 4.23/11 added synchronization checking at the start of an SMTP
1825 session; change 4.31/43 added the unwanted input to the log line - except
1826 that it did not do this in the start of session case. It now does.
1827
c9bdd01c
PH
182872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1829 This is wrong and can cause the other end to generate a synchronization
1830 error if it is another Exim or anything else that does the synchronization
1831 check. A QUIT command is no longer sent after a timeout.
1832
d43194df
PH
183373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1834 during host lookups.
1835
fe5b5d0b
PH
183674. The defer_ok option of callout verification was not working if it was used
1837 when verifying addresses in header lines, that is, for this case:
1838
1839 verify = header_sender/callout=defer_ok
1840
76a2d7ba
PH
184175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1842 those file descriptors could be used for SMTP connections. If anything
1843 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1844 could be sent to the SMTP client, causing chaos. The daemon now opens
1845 stdin, stdout, and stderr to /dev/null when it puts itself into the
1846 background.
1847
184876. Arrange for output from Perl's "warn" command to be written to Exim's main
1849 log by default. The user can override this with suitable Perl magic.
1850
04f7d5b9
PH
185177. The use of log_message on a "discard" ACL verb, which is supposed to add to
1852 the log message when discard triggers, was not working for the DATA ACL or
1853 for the non-SMTP ACL.
1854
bc60667e
PH
185578. Error message wording change in sieve.c.
1856
bb6e88ff
PH
185779. If smtp_accept_max_per_host was set, the number of connections could be
1858 restricted to fewer than expected, because the daemon was trying to set up
1859 a new connection before checking whether the processes handling previous
1860 connections had finished. The check for completed processes is now done
1861 earlier. On busy systems, this bug wouldn't be noticed because something
1862 else would have woken the daemon, and it would have reaped the completed
1863 process earlier.
1864
1e70f85b
PH
186580. If a message was submitted locally by a user whose login name contained one
1866 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1867 It caused a spool format error. I have fixed the spool reading code. A
1868 related problem was that the "from" clause in the Received: line became
1869 illegal because of the space(s). It is now covered by ${quote_local_part.
1870
187181. Included the latest eximstats from Steve (adds average sizes to HTML Top
1872 tables).
1873
4e01f9d6
PH
187482. Updated OS/Makefile-AIX as per message from Mike Meredith.
1875
1ee1cef2
PH
187683. Patch from Sieve maintainer to fix unterminated string problem in
1877 "vacation" handling.
1878
6e2b4ccc
PH
187984. Some minor changes to the Linux configuration files to help with other
1880 OS variants using glibc.
1881
8e669ac1
PH
188285. One more patch for Sieve to update vacation handling to latest spec.
1883
495ae4b0 1884
bbe902f0
PH
1885----------------------------------------------------
1886See the note above about the 4.44 and 4.50 releases.
1887----------------------------------------------------
1888
1889
1890Exim version 4.44
1891-----------------
1892
1893 1. Change 4.43/35 introduced a bug that caused file counts to be
1894 incorrectly computed when quota_filecount was set in an appendfile
1895 transport
1896
1897 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1898 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1899 place.
1900
1901 3. Give more explanation in the error message when the command for a transport
1902 filter fails to execute.
1903
1904 4. There are several places where Exim runs a non-Exim command in a
1905 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1906 was being done only for the command run by the queryprogram router. It is
1907 now done for all such subprocesses. The other cases are: ${run, transport
1908 filters, and the commands run by the lmtp and pipe transports.
1909
1910 5. Some older OS have a limit of 256 on the maximum number of file
1911 descriptors. Exim was using setrlimit() to set 1000 as a large value
1912 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1913 systems. I've change it so that if it can't get 1000, it tries for 256.
1914
1915 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1916 was an oversight, and furthermore, ever since the addition of extra
1917 controls (e.g. 4.43/32), the checks on when to allow different forms of
1918 "control" were broken. There should now be diagnostics for all cases when a
1919 control that does not make sense is encountered.
1920
1921 7. $recipients is now available in the predata ACL (oversight).
1922
1923 8. Tidy the search cache before the fork to do a delivery from a message
1924 received from the command line. Otherwise the child will trigger a lookup
1925 failure and thereby defer the delivery if it tries to use (for example) a
1926 cached ldap connection that the parent has called unbind on.
1927
1928 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1929 of $address_data from the recipient verification was clobbered by the
1930 sender verification.
1931
193210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1933 was its contents. (It was OK if the option was not defined at all.)
1934
193511. A "Completed" log line is now written for messages that are removed from
1936 the spool by the -Mrm option.
1937
193812. $host_address is now set to the target address during the checking of
1939 ignore_target_hosts.
1940
194113. When checking ignore_target_hosts for an ipliteral router, no host name was
1942 being passed; this would have caused $sender_host_name to have been used if
1943 matching the list had actually called for a host name (not very likely,
1944 since this list is usually IP addresses). A host name is now passed as
1945 "[x.x.x.x]".
1946
194714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1948 code that specifies a non-restarting handler (typically sigaction() in
1949 modern systems) in an attempt to fix a rare and obscure crash bug.
1950
195115. Narrowed the window for a race in the daemon that could cause it to ignore
1952 SIGCHLD signals. This is not a major problem, because they are used only to
1953 wake it up if nothing else does.
1954
195516. A malformed maildirsize file could cause Exim to calculate negative values
1956 for the mailbox size or file count. Odd effects could occur as a result.
1957 The maildirsize information is now recalculated if the size or filecount
1958 end up negative.
1959
196017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1961 support for a long time. Removed HAVE_SYS_VFS_H.
1962
ea3a6f44 196318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1964
196519. Allow an empty sender to be matched against a lookup in an address list.
1966 Previously the only cases considered were a regular expression, or an
1967 empty pattern.
1968
196920. Exim went into a mad DNS lookup loop when doing a callout where the
1970 host was specified on the transport, if the DNS lookup yielded more than
1971 one IP address.
1972
ea3a6f44
NM
197321. The RFC2047 encoding function was originally intended for short strings
1974 such as real names; it was not keeping to the 75-character limit for
1975 encoded words that the RFC imposes. It now respects the limit, and
1976 generates multiple encoded words if necessary. To be on the safe side, I
1977 have increased the buffer size for the ${rfc2047: expansion operator from
1978 1024 to 2048 bytes.
bbe902f0 1979
ea3a6f44
NM
198022. Failure to deliver a bounce message always caused it to be frozen, even if
1981 there was an errors_to setting on the router. The errors_to setting is now
1982 respected.
bbe902f0
PH
1983
198423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1985 canonical form (fully expanded) before being placed in
1986 $sender_host_address.
1987
198824. Updated eximstats to version 1.33
1989
ea3a6f44
NM
199025. Include certificate and key file names in error message when GnuTLS fails
1991 to set them up, because the GnuTLS error message doesn't include the name
1992 of the failing file when there is a problem reading it.
bbe902f0
PH
1993
199426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1995 As per change 25.
bbe902f0 1996
ea3a6f44
NM
199727. Reset the locale to "C" after calling embedded Perl, in case it was changed
1998 (this can affect the format of dates).
bbe902f0 1999
ea3a6f44
NM
200028. exim_tidydb, when checking for the continued existence of a message for
2001 which it has found a message-specific retry record, was not finding
2002 messages that were in split spool directories. Consequently, it was
2003 deleting retry records that should have stayed in existence.
bbe902f0
PH
2004
200529. eximstats updated to version 1.35
2006 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2007 1.35 - bugfix such that pie charts by volume are generated correctly
2008
ea3a6f44
NM
200930. The SPA authentication driver was not abandoning authentication and moving
2010 on to the next authenticator when an expansion was forced to fail,
2011 contradicting the general specification for all authenticators. Instead it
2012 was generating a temporary error. It now behaves as specified.
bbe902f0 2013
ea3a6f44
NM
201431. The default ordering of permitted cipher suites for GnuTLS was pessimal
2015 (the order specifies the preference for clients). The order is now AES256,
2016 AES128, 3DES, ARCFOUR128.
bbe902f0 2017
ea3a6f44
NM
201831. Small patch to Sieve code - explicitly set From: when generating an
2019 autoreply.
bbe902f0 2020
ea3a6f44
NM
202132. Exim crashed if a remote delivery caused a very long error message to be
2022 recorded - for instance if somebody sent an entire SpamAssassin report back
2023 as a large number of 550 error lines. This bug was coincidentally fixed by
2024 increasing the size of one of Exim's internal buffers (big_buffer) that
2025 happened as part of the Exiscan merge. However, to be on the safe side, I
2026 have made the code more robust (and fixed the comments that describe what
2027 is going on).
bbe902f0 2028
ea3a6f44
NM
202933. Some experimental protocols are using DNS PTR records for new purposes. The
2030 keys for these records are domain names, not reversed IP addresses. The
2031 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2032 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2033 CAN-2005-0021
2034
ea3a6f44
NM
203534. The host_aton() function is supposed to be passed a string that is known
2036 to be a valid IP address. However, in the case of IPv6 addresses, it was
2037 not checking this. This is a hostage to fortune. Exim now panics and dies
2038 if the condition is not met. A case was found where this could be provoked
2039 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2040 components; fortuitously, this particular loophole had already been fixed
2041 by change 4.50/55 or 4.44/33 above.
2042
2043 If there are any other similar loopholes, the new check in host_aton()
2044 itself should stop them being exploited. The report I received stated that
2045 data on the command line could provoke the exploit when Exim was running as
2046 exim, but did not say which command line option was involved. All I could
2047 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2048 running as the user.
bbe902f0
PH
2049 CAN-2005-0021
2050
ea3a6f44
NM
205135. There was a buffer overflow vulnerability in the SPA authentication code
2052 (which came originally from the Samba project). I have added a test to the
2053 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2054 CAN-2005-0022
2055
ea3a6f44
NM
205636. The daemon start-up calls getloadavg() while still root for those OS that
2057 need the first call to be done as root, but it missed one case: when
2058 deliver_queue_load_max is set with deliver_drop_privilege. This is
2059 necessary for the benefit of the queue runner, because there is no re-exec
2060 when deliver_drop_privilege is set.
bbe902f0 2061
ea3a6f44
NM
206237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2063 was in use, was not putting the data itself into the right store pool;
2064 consequently, it could be overwritten for a subsequent message in the same
2065 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2066 the caching.)
bbe902f0 2067
ea3a6f44
NM
206838. Sometimes the final signoff response after QUIT could fail to get
2069 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2070 < 0 before doing a fflush(). This bug looks as though it goes back to the
2071 introduction of TLS in release 3.20, but "sometimes" must have been rare
2072 because the tests only now provoked it.
bbe902f0
PH
2073
2074
495ae4b0
PH
2075Exim version 4.43
2076-----------------
2077
2078 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2079 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2080 Now it returns an integer. A number of calls were still expecting a T/F
2081 return. Fortuitously, in all cases, the tests worked in OK situations,
2082 which is the norm. However, things would have gone wrong on any write
2083 failures on the smtp file descriptor. This function is used when sending
2084 messages over SMTP and also when doing verify callouts.
2085
2086 2. When Exim is called to do synchronous delivery of a locally submitted
2087 message (the -odf or -odi options), it no longer closes stderr before doing
2088 the delivery.
2089
2090 3. Implemented the mua_wrapper option.
2091
2092 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2093
2094 5. Implemented the functions header_remove(), header_testname(),
2095 header_add_at_position(), and receive_remove_recipient(), and exported them
2096 to local_scan().
2097
2098 6. If an ACL "warn" statement specified the addition of headers, Exim already
2099 inserted X-ACL-Warn: at the start if there was no header name. However, it
2100 was not making this test for the second and subsequent header lines if
2101 there were newlines in the string. This meant that an invalid header could
2102 be inserted if Exim was badly configured.
2103
2104 7. Allow an ACL "warn" statement to add header lines at the start or after all
2105 the Received: headers, as well as at the end.
2106
2107 8. Added the rcpt_4xx retry error code.
2108
2109 9. Added postmaster_mailfrom=xxx to callout verification option.
2110
211110. Added mailfrom=xxxx to the callout verification option, for verify=
2112 header_sender only.
2113
211411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2115 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2116
211712. Inserted some casts to stop certain compilers warning when using pointer
2118 differences as field lengths or precisions in printf-type calls (mostly
2119 affecting debugging statements).
2120
212113. Added optional readline() support for -be (dynamically loaded).
2122
212314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2124 same clock tick as a message's arrival, so that its received time was the
2125 same as the "first fail" time on the retry record, and that message
2126 remained on the queue past the ultimate address timeout, every queue runner
2127 would try a delivery (because it was past the ultimate address timeout) but
2128 after another failure, the ultimate address timeout, which should have then
2129 bounced the address, did not kick in. This was a "< instead of <=" error;
2130 in most cases the first failure would have been in the next clock tick
2131 after the received time, and all would be well.
2132
213315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2134 being recognized when the domain list was tested by the match_domain
2135 condition in an expansion string.
2136
213716. Added the ${str2b64: operator.
2138
213917. Exim was always calling setrlimit() to set a large limit for the number of
2140 processes, without checking whether the existing limit was already
2141 adequate. (It did check for the limit on file descriptors.) Furthermore,
2142 errors from getrlimit() and setrlimit() were being ignored. Now they are
2143 logged to the main and panic logs, but Exim does carry on, to try to do its
2144 job under whatever limits there are.
2145
214618. Imported PCRE 5.0.
2147
214819. Trivial typo in log message " temporarily refused connection" (the leading
2149 space).
2150
215120. If the log selector return_path_on_delivery was set and an address was
2152 redirected to /dev/null, the delivery process crashed because it assumed
2153 that a return path would always be set for a "successful" delivery. In this
2154 case, the whole delivery is bypassed as an optimization, and therefore no
2155 return path is set.
2156
215721. Internal re-arrangement: the function for sending a challenge and reading
2158 a response while authentication was assuming a zero-terminated challenge
2159 string. It's now changed to take a pointer and a length, to allow for
2160 binary data in such strings.
2161
216222. Added the cyrus_sasl authenticator (code supplied by MBM).
2163
216423. Exim was not respecting finduser_retries when seeking the login of the
2165 uid under which it was called; it was always trying 10 times. (The default
2166 setting of finduser_retries is zero.) Also, it was sleeping after the final
2167 failure, which is pointless.
2168
216924. Implemented tls_on_connect_ports.
2170
217125. Implemented acl_smtp_predata.
2172
217326. If the domain in control=submission is set empty, Exim assumes that the
2174 authenticated id is a complete email address when it generates From: or
2175 Sender: header lines.
2176
217727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2178 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2179 chown and chgrp in /bin and hostname in /usr/bin.
2180
218128. Exim was keeping the "process log" file open after each use, just as it
2182 does for the main log. This opens the possibility of it remaining open for
2183 long periods when the USR1 signal hits a daemon. Occasional processlog
2184 errors were reported, that could have been caused by this. Anyway, it seems
2185 much more sensible not to leave this file open at all, so that is what now
2186 happens.
2187
218829. The long-running daemon process does not normally write to the log once it
2189 has entered its main loop, and it closes the log before doing so. This is
2190 so that log files can straightforwardly be renamed and moved. However,
2191 there are a couple of unusual error situations where the daemon does write
2192 log entries, and I had neglected to close the log afterwards.
2193
219430. The text of an SMTP error response that was received during a remote
2195 delivery was being truncated at 512 bytes. This is too short for some of
2196 the long messages that one sometimes sees. I've increased the limit to
2197 1024.
2198
219931. It is now possible to make retry rules that apply only when a message has a
2200 specific sender, in particular, an empty sender.
2201
220232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2203 it possible to be selective about when SMTP synchronization is enforced.
2204
220533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2206
220732. Implemented hosts_connection_nolog.
2208
220933. Added an ACL for QUIT.
2210
221134. Setting "delay_warning=" to disable warnings was not working; it gave a
2212 syntax error.
2213
221435. Added mailbox_size and mailbox_filecount to appendfile.
2215
221636. Added control = no_multiline_responses to ACLs.
2217
221837. There was a bug in the logic of the code that waits for the clock to tick
2219 in the case where the clock went backwards by a substantial amount such
2220 that the microsecond fraction of "now" was more than the microsecond
2221 fraction of "then" (but the whole seconds number was less).
2222
222338. Added support for the libradius Radius client library this is found on
2224 FreeBSD (previously only the radiusclient library was supported).
2225
2226
2227Exim version 4.42
2228-----------------
2229
2230 1. When certain lookups returned multiple values in the form name=value, the
2231 quoting of the values was not always being done properly. Specifically:
2232 (a) If the value started with a double quote, but contained no whitespace,
2233 it was not quoted.
2234 (b) If the value contained whitespace other than a space character (i.e.
2235 tabs or newlines or carriage returns) it was not quoted.
2236 This fix has been applied to the mysql and pgsql lookups by writing a
2237 separate quoting function and calling it from the lookup code. The fix
2238 should probably also be applied to nisplus, ibase and oracle lookups, but
2239 since I cannot test any of those, I have not disturbed their existing code.
2240
2241 2. A hit in the callout cache for a specific address caused a log line with no
2242 reason for rejecting RCPT. Now it says "Previous (cached) callout
2243 verification failure".
2244
2245 3. There was an off-by-one bug in the queryprogram router. An over-long
2246 return line was truncated at 256 instead of 255 characters, thereby
2247 overflowing its buffer with the terminating zero. As well as fixing this, I
2248 have increased the buffer size to 1024 (and made a note to document this).
2249
2250 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2251 when Exim is waiting for an SMTP response from a remote server, Exim
2252 restarts its select() call on the socket, thereby resetting its timeout.
2253 This is not a problem when such interrupts are rare. Somebody set up a cron
2254 job to run exiwhat every 2 minutes, which is less than the normal select()
2255 timeout (5 or 10 minutes). This meant that the select() timeout never
2256 kicked in because it was always reset. I have fixed this by comparing the
2257 time when an interrupt arrives with the time at the start of the first call
2258 to select(). If more time than the timeout has elapsed, the interrupt is
2259 treated as a timeout.
2260
2261 5. Some internal re-factoring in preparation for the addition of Sieve
2262 extensions (by MH). In particular, the "personal" test is moved to a
2263 separate function, and given an option for scanning Cc: and Bcc: (which is
2264 not set for Exim filters).
2265
2266 6. When Exim created an email address using the login of the caller as the
2267 local part (e.g. when creating a From: or Sender: header line), it was not
2268 quoting the local part when it contained special characters such as @.
2269
2270 7. Installed new OpenBSD configuration files.
2271
2272 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2273 try to make them clearer.
2274
2275 9. Callout options, other than the timeout value, were being ignored when
2276 verifying sender addresses in header lines. For example, when using
2277
2278 verify = header_sender/callout=no_cache
2279
2280 the cache was (incorrectly) being used.
2281
228210. Added a missing instance of ${EXE} to the exim_install script; this affects
2283 only the Cygwin environment.
2284
228511. When return_path_on_delivery was set as a log selector, if different remote
2286 addresses in the same message used different return paths and parallel
2287 remote delivery occurred, the wrong values would sometimes be logged.
2288 (Whenever a remote delivery process finished, the return path value from
2289 the most recently started remote delivery process was logged.)
2290
229112. RFC 3848 specifies standard names for the "with" phrase in Received: header
2292 lines when AUTH and/or TLS are in use. This is the "received protocol"
2293 field. Exim used to use "asmtp" for authenticated SMTP, without any
2294 indication (in the protocol name) for TLS use. Now it follows the RFC and
2295 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2296 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2297 names appear in log lines as well as in Received: header lines.
2298
229913. Installed MH's patches for Sieve to add the "copy" and "vacation"
2300 extensions, and comparison tests, and to fix some bugs.
2301
230214. Changes to the "personal" filter test:
2303
2304 (1) The test was buggy in that it was just doing the equivalent of
2305 "contains" tests on header lines. For example, if a user's address was
2306 anne@some.where, the "personal" test would incorrectly be true for
2307
2308 To: susanne@some.where
2309
2310 This test is now done by extracting each address from the header in turn,
2311 and checking the entire address. Other tests that are part of "personal"
2312 are now done using regular expressions (for example, to check local parts
2313 of addresses in From: header lines).
2314
2315 (2) The list of non-personal local parts in From: addresses has been
2316 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2317 taken from the Sieve specification recommendations.
2318
2319 (3) If the message contains any header line starting with "List-" it is
2320 treated as non-personal.
2321
2322 (4) The test for "circular" in the Subject: header line has been removed
2323 because it now seems ill-conceived.
2324
232515. Minor typos in src/EDITME comments corrected.
2326
232716. Installed latest exipick from John Jetmore.
2328
232917. If headers_add on a router specified a text string that was too long for
2330 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2331 of string_sprintf() is now avoided.
2332
233318. $message_body_size was not set (it was always zero) when running the DATA
2334 ACL and the local_scan() function.
2335
233619. For the "mail" command in an Exim filter, no default was being set for
2337 the once_repeat time, causing a random time value to be used if "once" was
2338 specified. (If the value happened to be <= 0, no repeat happened.) The
2339 default is now 0s, meaning "never repeat". The "vacation" command was OK
2340 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2341 (I found it when inspecting the code).
2342
234320. There is now an overall timeout for performing a callout verification. It
2344 defaults to 4 times the callout timeout, which applies to individual SMTP
2345 commands during the callout. The overall timeout applies when there is more
2346 than one host that can be tried. The timeout is checked before trying the
2347 next host. This prevents very long delays if there are a large number of
2348 hosts and all are timing out (e.g. when the network connections are timing
2349 out). The value of the overall timeout can be changed by specifying an
2350 additional sub-option for "callout", called "maxwait". For example:
2351
2352 verify = sender/callout=5s,maxwait=20s
2353
235421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2355 to the end before writing, but this should make it even safer).
2356
235722. Exim was forgetting that it had advertised PIPELINING for the second and
2358 subsequent messages on an SMTP connection. It was also not resetting its
2359 memory on STARTTLS and an internal HELO.
2360
236123. When Exim logs an SMTP synchronization error within a session, it now
2362 records whether PIPELINING has been advertised or not.
2363
236424. Added 3 instances of "(long int)" casts to time_t variables that were being
2365 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2366 rather than long int.
2367
236825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2369
237026. Added the never_mail option to autoreply.
2371
2372
2373Exim version 4.41
2374-----------------
2375
2376 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2377 crash if the getsockname() call failed; this can happen if a connection is
2378 closed very soon after it is established. The problem was simply in the
2379 order in which certain operations were done, causing Exim to try to write
2380 to the SMTP stream before it had set up the file descriptor. The bug has
2381 been fixed by making things happen in the correct order.
2382
2383
2384Exim version 4.40
2385-----------------
2386
2387 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2388 before the connection was closed, thus losing the rejection response.
2389
2390 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2391 some early Solaris releases, but causes trouble in current releases where
2392 socklen_t is defined.
2393
2394 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2395 always exist.
2396
2397 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2398 configured.
2399
2400 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2401 that releasing the top of it at the end releases what was used for sub-
2402 expansions (unless the block got too big). However, discard this block if
2403 the first thing is a variable or header, so that we can use its block when
2404 it is dynamic (useful for very large $message_headers, for example).
2405
2406 6. Lookups now cache *every* query, not just the most recent. A new, separate
2407 store pool is used for this. It can be recovered when all lookup caches are
2408 flushed. Lookups now release memory at the end of their result strings.
2409 This has involved some general refactoring of the lookup sources.
2410
2411 7. Some code has been added to the store_xxx() functions to reduce the amount
2412 of flapping under certain conditions.
2413
2414 8. log_incoming_interface used to affect only the <= reception log lines. Now
2415 it causes the local interface and port to be added to several more SMTP log
2416 lines, for example "SMTP connection from", and rejection lines.
2417
2418 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2419
242010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2421
242211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2423 could be overwritten at the end of the current message (or the start of a
2424 new message if it was set in a HELO ACL). The value is now preserved for
2425 the duration of the SMTP connection.
2426
242712. If a transport had a headers_rewrite setting, and a matching header line
2428 contained an unqualified address, that address was qualified, even if it
2429 did not match any rewriting rules. The underlying bug was that the values
2430 of the flags that permit the existence of unqualified sender and recipient
2431 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2432 non-local messages, and by -bnq for local messages) were not being
2433 preserved with the message after it was received.
2434
243513. When Exim was logging an SMTP synchronization error, it could sometimes log
2436 "next input=" as part of the text comprising the host identity instead of
2437 the correct text. The code was using the same buffer for two different
2438 strings. However, depending on which order the printing function evaluated
2439 its arguments, the bug did not always show up. Under Linux, for example, my
2440 test suite worked just fine.
2441
244214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2443 doesn't work with some older versions of Perl. It has been changed to "my",
2444 which in any case is probably the better facility to use.
2445
244615. A really picky compiler found some instances of statements for creating
2447 error messages that either had too many or two few arguments for the format
2448 string.
2449
245016. The size of the buffer for calls to the DNS resolver has been increased
2451 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2452 for addresses that have a lot of PTR records. This alleviates a problem; it
2453 does not fully solve it.
2454
245517. A dnsdb lookup for PTR records that receives more data than will fit in the
2456 buffer now truncates the list and logs the incident, which is the same
2457 action as happens when Exim is looking up a host name and its aliases.
2458 Previously in this situation something unpredictable would happen;
2459 sometimes it was "internal error: store_reset failed".
2460
246118. If a server dropped the connection unexpectedly when an Exim client was
2462 using GnuTLS and trying to read a response, the client delivery process
2463 crashed while trying to generate an error log message.
2464
246519. If a "warn" verb in an ACL added multiple headers to a message in a single
2466 string, for example:
2467
2468 warn message = H1: something\nH2: something
2469
2470 the text was added as a single header line from Exim's point of view
2471 though it ended up OK in the delivered message. However, searching for the
2472 second and subsequent header lines using $h_h2: did not work. This has been
2473 fixed. Similarly, if a system filter added multiple headers in this way,
2474 the routers could not see them.
2475
247620. Expanded the error message when iplsearch is called with an invalid key to
2477 suggest using net-iplsearch in a host list.
2478
247921. When running tests using -bh, any delays imposed by "delay" modifiers in
2480 ACLs are no longer actually imposed (and a message to that effect is
2481 output).
2482
248322. If a "gecos" field in a passwd entry contained escaped characters, in
2484 particular, if it contained a \" sequence, Exim got it wrong when building
2485 a From: or a Sender: header from that name. A second bug also caused
2486 incorrect handling when an unquoted " was present following a character
2487 that needed quoting.
2488
248923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2490 was not being matched caselessly.
2491
249224. Arranged for all hyphens in the exim.8 source to be escaped with
2493 backslashes.
2494
249525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2496 properly. Recipient callout cache records were still being keyed to include
2497 the sender, even when use_sender was set false. This led to far more
2498 callouts that were necessary. The sender is no longer included in the key
2499 when use_sender is false.
2500
250126. Added "control = submission" modifier to ACLs.
2502
250327. Added the ${base62d: operator to decode base 62 numbers.
2504
250528. dnsdb lookups can now access SRV records.
2506
250729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2508 the configuration file.
2509
251030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2511 (-v) mode. This makes the output for a verbose queue run more intelligible.
2512
251331. Added a use_postmaster feature to recipient callouts.
2514
251532. Added the $body_zerocount variable, containing the number of binary zero
2516 bytes in the message body.
2517
251833. The time of last modification of the "new" subdirectory is now used as the
2519 "mailbox time last read" when there is a quota error for a maildir
2520 delivery.
2521
252234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2523
252435. Added +ignore_unknown as a special item in host lists.
2525
252636. Code for decoding IPv6 addresses in host lists is now included, even if
2527 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2528 address was recognized as an IP address, but was then not correctly decoded
2529 into binary, causing unexpected and incorrect effects when compared with
2530 another IP address.
2531
2532
2533Exim version 4.34
2534-----------------
2535
2536 1. Very minor rewording of debugging text in manualroute to say "list of
2537 hosts" instead of "hostlist".
2538
2539 2. If verify=header_syntax was set, and a header line with an unqualified
2540 address (no domain) and a large number of spaces between the end of the
2541 name and the colon was received, the reception process suffered a buffer
2542 overflow, and (when I tested it) crashed. This was caused by some obsolete
2543 code that should have been removed. The fix is to remove it!
2544
2545 3. When running in the test harness, delay a bit after writing a bounce
2546 message to get a bit more predictability in the log output.
2547
2548 4. Added a call to search_tidyup() just before forking a reception process. In
2549 theory, someone could use a lookup in the expansion of smtp_accept_max_
2550 per_host which, without the tidyup, could leave open a database connection.
2551
2552 5. Added the variables $recipient_data and $sender_data which get set from a
2553 lookup success in an ACL "recipients" or "senders" condition, or a router
2554 "senders" option, similar to $domain_data and $local_part_data.
2555
2556 6. Moved the writing of debug_print from before to after the "senders" test
2557 for routers.
2558
2559 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2560 problems for message scanning, either using a data ACL, or using
2561 local_scan() because the Received: header was not generated till after they
2562 were called (in order to set the time as the time of reception completion).
2563 I have revised the way this works. The header is now generated after the
2564 body is received, but before the ACL or local_scan() are called. After they
2565 are run, the timestamp in the header is updated.
2566
2567
2568Exim version 4.33
2569-----------------
2570
2571 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2572 before starting a queue runner without re-exec. This happened only when
2573 deliver_drop_privilege was set or when the Exim user was set to root. The
2574 effect of the bug was that timeouts during subsequent deliveries caused
2575 crashes instead of being properly handled. The handler is now left at its
2576 default (and expected) setting.
2577
2578 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2579 message, again when deliver_drop_privilege is set or Exim is run as root.
2580 The bug described in (1) was not present in this case, but the tidying up
2581 of the other signals was missing. I have made the two cases consistent.
2582
2583 3. The ignore_target_hosts setting on a manualroute router was being ignored
2584 for hosts that were looked up using the /MX notation.
2585
2586 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2587 in domain lists.
2588
2589 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2590 operated on the sender address. After changing the $sender_address to <>
2591 for the sender address verify, Exim was re-instated it as the original
2592 (before rewriting) address, but remembering that it had rewritten it, so it
2593 wasn't rewriting it again. This bug also had the effect of breaking the
2594 sender address verification caching when the sender address was rewritten.
2595
2596 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2597 This has been changed so that if the ip literal address matches
2598 ignore_target_hosts, the router declines.
2599
2600 7. Added expansion conditions match_domain, match_address, and match_local_
2601 part (NOT match_host).
2602
2603 8. The placeholder for the Received: header didn't have a length field set.
2604
2605 9. Added code to Exim itself and to exim_lock to test for a specific race
2606 condition that could lead to file corruption when using MBX delivery. The
2607 issue is with the lockfile that is created in /tmp. If this file is removed
2608 after a process has opened it but before that process has acquired a lock,
2609 there is the potential for a second process to recreate the file and also
2610 acquire a lock. This could lead to two Exim processes writing to the file
2611 at the same time. The added code performs the same test as UW imapd; it
2612 checks after acquiring the lock that its file descriptor still refers to
2613 the same named file.
2614
261510. The buffer for building added header lines was of fixed size, 8192 bytes.
2616 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2617 when Exim is built.
2618
261911. Added the smtp_active_hostname option. If used, this will typically be made
2620 to depend on the incoming interface address. Because $interface_address is
2621 not set up until the daemon has forked a reception process, error responses
2622 that can happen earlier (such as "too many connections") no longer contain
2623 a host name.
2624
262512. If an expansion in a condition on a "warn" statement fails because a lookup
2626 defers, the "warn" statement is abandoned, and the next ACL statement is
2627 processed. Previously this caused the whole ACL to be aborted.
2628
262913. Added the iplsearch lookup type.
2630
263114. Added ident_timeout as a log selector.
2632
263315. Added tls_certificate_verified as a log selector.
2634
263516. Added a global option tls_require_ciphers (compare the smtp transport
2636 option of the same name). This controls incoming TLS connections.
2637
263817. I finally figured out how to make tls_require_ciphers do a similar thing
2639 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2640 before starting the TLS session.
2641
264218. Tabs are now shown as \t in -bP output.
2643
264419. If the log selector return_path_on_delivery was set, Exim crashed when
2645 bouncing a message because it had too many Received: header lines.
2646
264720. If two routers both had headers_remove settings, and the first one included
2648 a superfluous trailing colon, the final name in the first list and the
2649 first name in the second list were incorrectly joined into one item (with a
2650 colon in the middle).
2651
2652
2653Exim version 4.32
2654-----------------
2655
2656 1. Added -C and -D options to the exinext utility, mainly to make it easier
2657 to include in the automated testing, but these could be helpful when
2658 multiple configurations are in use.
2659
2660 2. The exinext utility was not formatting the output nicely when there was
2661 an alternate port involved in the retry record key, nor when there was a
2662 message id as well (for retries that were specific to a specific message
2663 and a specific host). It was also confused by IPv6 addresses, because of
2664 the additional colons they contain. I have fixed the IPv4 problem, and
2665 patched it up to do a reasonable job for IPv6.
2666
2667 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2668 delivery, the log line now contains "pipelined" if PIPELINING was used.
2669
2670 4. An SMTP transport process used to panic and die if the bind() call to set
2671 an explicit outgoing interface failed. This has been changed; it is now
2672 treated in the same way as a connect() failure.
2673
2674 5. A reference to $sender_host_name in the part of a conditional expansion
2675 that was being skipped was still causing a DNS lookup. This no longer
2676 occurs.
2677
2678 6. The def: expansion condition was not recognizing references to header lines
2679 that used bh_ and bheader_.
2680
2681 7. Added the _cache feature to named lists.
2682
2683 8. The code for checking quota_filecount in the appendfile transport was
2684 allowing one more file than it should have been.
2685
2686 9. For compatibility with Sendmail, the command line option
2687
2688 -prval:sval
2689
2690 is equivalent to
2691
2692 -oMr rval -oMs sval
2693
2694 and sets the incoming protocol and host name (for trusted callers). The
2695 host name and its colon can be omitted when only the protocol is to be set.
2696 Note the Exim already has two private options, -pd and -ps, that refer to
2697 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2698 "s", but I don't think that's a major issue.
2699
270010. A number of refactoring changes to the code, none of which should affect
2701 Exim's behaviour:
2702
2703 (a) The number of logging options was getting close to filling up the
2704 32-bit word that was used as a bit map. I have split them into two classes:
2705 those that are passed in the argument to log_write(), and those that are
2706 only ever tested independently outside of that function. These are now in
2707 separate 32-bit words, so there is plenty of room for expansion again.
2708 There is no change in the user interface or the logging behaviour.
2709
2710 (b) When building, for example, log lines, the code previously used a
2711 macro that called string_cat() twice, in order to add two strings. This is
2712 not really sufficiently general. Furthermore, there was one instance where
2713 it was actually wrong because one of the argument was used twice, and in
2714 one call a function was used. (As it happened, calling the function twice
2715 did not affect the overall behaviour.) The macro has been replaced by a
2716 function that can join an arbitrary number of extra strings onto a growing
2717 string.
2718
2719 (c) The code for expansion conditions now uses a table and a binary chop
2720 instead of a serial search (which was left over from when there were very
2721 few conditions). Also, it now recognizes conditions like "pam" even when
2722 the relevant support is not compiled in: a suitably worded error message is
2723 given if an attempt is made to use such a condition.
2724
272511. Added ${time_interval:xxxxx}.
2726
272712. A bug was causing one of the ddress fields not to be passed back correctly
2728 from remote delivery subprocesses. The field in question was not being
2729 subsequently used, so this caused to problems in practice.
2730
273113. Added new log selectors queue_time and deliver_time.
2732
273314. Might have fixed a bug in maildirsizefile handling that threw up
2734 "unexpected character" debug warnings, and recalculated the data
2735 unnecessarily. In any case, I expanded the warning message to give more
2736 information.
2737
273815. Added the message "Restricted characters in address" to the statements in
2739 the default ACL that block characters like @ and % in local parts.
2740
274116. Change 71 for release 4.31 proved to be much less benign that I imagined.
2742 Three changes have been made:
2743
2744 (a) There was a serious bug; a negative response to MAIL caused the whole
2745 recipient domain to be cached as invalid, thereby blocking all messages
2746 to all local parts at the same domain, from all senders. This bug has
2747 been fixed. The domain is no longer cached after a negative response to
2748 MAIL if the sender used is not empty.
2749
2750 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2751 been restored.
2752
2753 (c) A new callout option, "use_sender" has been added for people who want
2754 the modified behaviour.
2755
2756
2757Exim version 4.31
2758-----------------
2759
2760 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2761 Larry Rosenman.
2762
2763 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2764 indeed breaks things for older releases.
2765
2766 3. Added additional logging to the case where there is a problem reading data
2767 from a filter that is running in a subprocess using a pipe, in order to
2768 try to track down a specific problem.
2769
2770 4. Testing facility fudge: when running in the test harness and attempting
2771 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2772 getting "No route to host". Convert this to a timeout.
2773
2774 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2775 warning.
2776
2777 6. Some OS don't have socklen_t but use size_t instead. This affects the
2778 fifth argument of getsockopt() amongst other things. This is now
2779 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2780 can be set for individual OS. I have set it for SunOS5, OSF1, and
2781 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2782 some earlier ones do not.
2783
2784 7. Change 4.30/15 was not doing the test caselessly.
2785
2786 8. The standard form for an IPv6 address literal was being rejected by address
2787 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2788 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2789 this, as well as the form without the "IPv6" on the front (but only when
2790 address literals are enabled, of course).
2791
2792 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2793
279410. Exim crashed if a message with an empty sender address specified by -f
2795 encountered a router with an errors_to setting. This could be provoked only
2796 by a command such as
2797
2798 exim -f "" ...
2799
2800 where an empty string was supplied; "<>" did not hit this bug.
2801
280211. Installed PCRE release 4.5.
2803
280412. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2805 remained set. It is now erased.
2806
280713. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2808 times from message ids (which are base 36 rather than the normal 62).
2809
281014. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2811 were being counted as actual protocol errors, and logged if the log
2812 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2813 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2814 and DATA following a set of rejected RCPTs do not count as protocol errors.
2815 In other words, Exim assumes they were pipelined, though this may not
2816 actually be the case. Of course, in all cases the client gets an
2817 appropriate error code.
2818
281915. If a lookup fails in an ACL condition, a message about the failure may
2820 be available; it is used if testing the ACL cannot continue, because most
2821 such messages specify what the cause of the deferral is. However, some
2822 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2823 that caused an old message to be retained and used if a later statement
2824 caused a defer, replacing the real cause of the deferral.
2825
282616. If an IP address had so many PTR records that the DNS lookup buffer
2827 was not large enough to hold them, Exim could crash while trying to process
2828 the truncated data. It now detects and logs this case.
2829
283017. Further to 4.21/58, another change has been made: if (and only if) the
2831 first line of a message (the first header line) ends with CRLF, a bare LF
2832 in a subsequent header line has a space inserted after it, so as not to
2833 terminate the header.
2834
283518. Refactoring: tidied an ugly bit of code in appendfile that copied data
2836 unnecessarily, used atoi() instead of strtol(), and didn't check the
2837 termination when getting file sizes from file names by regex.
2838
283919. Completely re-implemented the support for maildirsize files, in the light
2840 of a number of problems with the previous contributed implementation
2841 (4.30/29). In particular:
2842
2843 . If the quota is zero, the maildirsize file is maintained, but no quota is
2844 imposed.
2845
2846 . If the maildir directory does not exist, it is created before any attempt
2847 to write a maildirsize file.
2848
2849 . The quota value in the file is just a cache; if the quota is changed in
2850 the transport, the new value overrides.
2851
2852 . A regular expression is available for excluding directories from the
2853 count.
2854
285520. The autoreply transport checks the characters in options that define the
2856 message's headers; it allows continued headers, but it was checking with
2857 isspace() after an embedded newline instead of explicitly looking for a
2858 space or a tab.
2859
286021. If all the "regular" hosts to which an address was routed had passed their
2861 expiry times, and had not reached their retry times, the address was
2862 bounced, even if fallback hosts were defined. Now Exim should go on to try
2863 the fallback hosts.
2864
286522. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2866 equivalent code in the SMTP transport. Some hosts send humungous responses
2867 to HELO/EHLO, more than 1024 it seems.
2868
286923. Refactoring: code in filter.c used (void *) for "any old type" but this
2870 gives compiler warnings in some environments. I've now done it "properly",
2871 using a union.
2872
287324. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2874 (because of problems with the built-in one) was declared to return uschar *
2875 instead of char *, causing compiler failure.
2876
287725. Fixed a file descriptor leak when processing alias/forward files.
2878
287926. Fixed a minor format string issue in dbfn.c.
2880
288127. Typo in exim.c: ("dmbnz" for "dbmnz").
2882
288328. If a filter file refered to $h_xxx or $message_headers, and the headers
2884 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2885 become corrupted.
2886
288729. When a sender address is verified, it is cached, to save repeating the test
2888 when there is more than one recipient in a message. However, when the
2889 verification involves a callout, it is possible for different callout
2890 options to be set for different recipients. It is too complicated to keep
2891 track of this in the cache, so now Exim always runs a verification when a
2892 callout is required, relying on the callout cache for the optimization.
2893 The overhead is duplication of the address routing, but this should not be
2894 too great.
2895
289630. Fixed a bug in callout caching. If a RCPT command caused the sender address
2897 to be verified with callout=postmaster, and the main callout worked but the
2898 postmaster check failed, the verification correctly failed. However, if a
2899 subsequent RCPT command asked for sender verification *without* the
2900 postmaster check, incorrect caching caused this verification also to fail,
2901 incorrectly.
2902
290331. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2904 it was not caching the DNS options (qualify_single, search_parents) that
2905 were used when the lookup failed. A subsequent lookup with different
2906 options therefore always gave the same answer, though there were cases
2907 where it should not have. (Example: a "domains = !$mx_any" option on a
2908 dnslookup router: the "domains" option is always processed without any
2909 widening, but the router might have qualify_single set.) Now Exim uses the
2910 cached value only when the same options are set.
2911
291232. Added John Jetmore's "exipick" utility to the distribution.
2913
291433. GnuTLS: When an attempt to start a TLS session fails for any reason other
2915 than a timeout (e.g. a certificate is required, and is not provided), an
2916 Exim server now closes the connection immediately. Previously it waited for
2917 the client to close - but if the client is SSL, it seems that they each
2918 wait for each other, leading to a delay before one of them times out.
2919
292034: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2921 maintained 0.8.x compatibility because I don't think many are using it, and
2922 it is clearly obsolete.
2923
292435. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2925 transport.
2926
292736. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2928 client certificate was expired. A simple patch fixes this, though I don't
2929 understand the full logic of why the verify callback is called multiple
2930 times.
2931
293237. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2933 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2934 which causes problems with some clients (such as the Certicom SSL Plus
2935 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2936 disables the coutermeasure allowing Eudora to connect."
2937
293838. Exim was not checking that a write() to a log file succeeded. This could
2939 lead to Bad Things if a log got too big, in particular if it hit a file
2940 size limit. Exim now panics and dies if it cannot write to a log file, just
2941 as it does if it cannot open a log file.
2942
294339. Modified OS/Makefile-Linux so that it now contains
2944
2945 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2946
2947 The two -D definitions ensure that Exim is compiled with large file
2948 support, which makes it possible to handle log files that are bigger than
2949 2^31.
2950
295140. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2952 instance) a domain was checked against a named list that involved a lookup,
2953 causing $domain_data to be set, then another domain was checked against the
2954 same list, then the first domain was re-checked, the value of $domain_data
2955 after the final check could be wrong. In particular, if the second check
2956 failed, it could be set empty. This bug probably also applied to
2957 $localpart_data.
2958
295941. The strip_trailing_dot option was not being applied to the address given
2960 with the -f command-line option.
2961
296242. The code for reading a message's header from the spool was incrementing
2963 $received_count, but never initializing it. This meant that the value was
2964 incorrect (doubled) while delivering a message in the same process in which
2965 it was received. In the most common configuration of Exim, this never
2966 happens - a fresh exec is done - but it can happen when
2967 deliver_drop_privilege is set.
2968
296943. When Exim logs an SMTP synchronization error - client data sent too soon -
2970 it now includes up to 150 characters of the unexpected data in the log
2971 line.
2972
297344. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2974 and building data strings. The size of both of these buffers was 10 000
2975 bytes - far larger than anybody would *ever* want, thought I. Needless to
2976 say, somebody hit the limit. I have increased the maximum line length to
2977 20 000 and the maximum data length of concatenated lines to 100 000. I have
2978 also fixed two bugs, because there was no checking on these buffers. Tsk,
2979 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2980 buffer is too small.
2981
298245. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2983 lsearch lookups. Now it does.
2984
298546. When parsing a route_list item in a manualroute router, a fixed-length
2986 buffer was used for the list of hosts. I made this 1024 bytes long,
2987 thinking that nobody would ever have a list of hosts that long. Wrong.
2988 Somebody had a whole pile of complicated expansion conditions, and the
2989 string was silently truncated, leading to an expansion error. It turns out
2990 that it is easier to change to an unlimited length (owing to other changes
2991 that have happened since this code was originally written) than to build
2992 structure for giving a limitation error. The length of the item that
2993 expands into the list of hosts is now unlimited.
2994
299547. The lsearch lookup could not handle data where the length of text line was
2996 more than 4095 characters. Such lines were truncated, leading to shortened
2997 data being returned. It should now handle lines of any length.
2998
299948. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3000 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3001 ACL").
3002
300349. Cosmetic tidy to scripts like exicyclog that are generated by globally
3004 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3005 no longer happens in comment lines. A list of replacements is now placed
3006 at the head of all of the source files, except those whose only change is
3007 to replace PERL_COMMAND in the very first #! line.
3008
300950. Replaced the slow insertion sort in queue.c, for sorting the list of
3010 messages on the queue, with a bottom-up merge sort, using code contributed
3011 by Michael Haardt. This should make operations like -bp somewhat faster on
3012 large queues. It won't affect queue runners, except when queue_run_in_order
3013 is set.
3014
301551. Installed eximstats 1.31 in the distribution.
3016
301752. Added support for SRV lookups to the dnslookup router.
3018
301953. If an ACL referred to $message_body or $message_body_end, the value was not
3020 reset for any messages that followed in the same SMTP session.
3021
302254. The store-handling optimization for building very long strings was not
3023 differentiating between the different store pools. I don't think this
3024 actually made any difference in practice, but I've tidied it.
3025
302655. While running the routers to verify a sender address, $sender_address
3027 was still set to the sender address. This is wrong, because when routing to
3028 send a bounce to the sender, it would be empty. Therefore, I have changed
3029 it so that, while verifying a sender address, $sender_address is set to <>.
3030 (There is no change to what happens when verifying a recipient address.)
3031
303256. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3033 target A or AAAA records (if not already returned) without resetting the
3034 qualify_single or search_parents options of the DNS resolver. These are
3035 inappropriate in this case because the targets of MX and SRV records must
3036 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3037 target that, when qualified, matched something in the local domain. These
3038 two options are now turned off when doing these lookups.
3039
304057. It seems that at least some releases of Reiserfs (which does not have the
3041 concept of a fixed number of inodes) returns zero and not -1 for the
3042 number of available inodes. This interacted badly with check_spool_inodes,
3043 which assumed that -1 was the "no such thing" setting. What I have done is
3044 to check that the total number of inodes is greater than zero before doing
3045 the test of how many are available.
3046
304758. When a "warn" ACL statement has a log_message modifier, the message is
3048 remembered, and not repeated. This is to avoid a lot of repetition when a
3049 message has many recipients that cause the same warning to be written.
3050 Howewer, Exim was preserving the list of already written lines for an
3051 entire SMTP session, which doesn't seem right. The memory is now reset if a
3052 new message is started.
3053
305459. The "rewrite" debugging flag was not showing the result of rewriting in the
3055 debugging output unless log_rewrite was also set.
3056
305760. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3058 of (int)(handle) when we know that handle contains (void *)(-1).
3059
306061. The Exim daemon panic-logs an error return when it closes the incoming
3061 connection. However "connection reset by peer" seems to be common, and
3062 isn't really an error worthy of noting specially, so that particular error
3063 is no long logged.
3064
306562. When Exim is trying to find all the local interfaces, it used to panic and
3066 die if the ioctl to get the interface flags failed. However, it seems that
3067 on at least one OS (Solaris 9) it is possible to have an interface that is
3068 included in the list of interfaces, but for which you get a failure error
3069 for this call. This happens when the interface is not "plumbed" into a
3070 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3071 failure of the "get flags" call assumes that the interface is down.
3072
307363. Added a ${eval10: operator, which assumes all numbers are decimal. This
3074 makes life easier for people who are doing arithmetic on fields extracted
3075 from dates, where you often get leading zeros that should not be
3076 interpreted as octal.
3077
307864. Added qualify_domain to the redirect router, to override the global
3079 setting.
3080
308165. If a pathologically long header line contained very many addresses (the
3082 report of this problem mentioned 10 000) and each of them was rewritten,
3083 Exim could use up a very large amount of memory. (It kept on making new
3084 copies of the header line as it rewrote, and never released the old ones.)
3085 At the expense of a bit more processing, the header rewriting function has
3086 been changed so that it no longer eats memory in this way.
3087
308866. The generation of the Received: header has been moved from the time that a
3089 message starts to be received, to the time that it finishes. The timestamp
3090 in the Received: header should now be very close to that of the <= log
3091 line. There are two side-effects of this change:
3092
3093 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3094 logged header lines no longer include the local Received: line, because
3095 it has not yet been created. The same applies to a copy of the message
3096 that is returned to a non-SMTP sender when a message is rejected.
3097
3098 (b) When a filter file is tested using -bf, no additional Received: header
3099 is added to the test message. After some thought, I decided that this
3100 is a bug fix.
3101
3102 This change does not affect the value of $received_for. It is still set
3103 after address rewriting, but before local_scan() is called.
3104
310567. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3106
310768. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3108 gave an unhelpful panic error message, and a defer error. I have managed to
3109 change this behaviour so that it now rejects any supplied certificate,
3110 which seems right, as the list of acceptable certificates is empty.
3111
311269. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3113 gave an unhelpful defer error. I have not managed to make this reject any
3114 supplied certificates, but the error message it gives is "no certificate
3115 supplied", which is not helpful.
3116
311770. exigrep's output now also includes lines that are not associated with any
3118 message, but which match the given pattern. Implemented by a patch from
3119 Martin Sluka, which also tidied up the Perl a bit.
3120
312171. Recipient callout verification, like sender verification, was using <> in
3122 the MAIL FROM command. This isn't really the right thing, since the actual
3123 sender may affect whether the remote host accepts the recipient or not. I
3124 have changed it to use the actual sender in the callout; this means that
3125 the cache record is now keyed on a recipient/sender pair, not just the
3126 recipient address. There doesn't seem to be a real danger of callout loops,
3127 since a callout by the remote host to check the sender would use <>.
3128 [SEE ABOVE: changed after hitting problems.]
3129
313072. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3131 temporary errors. However, in the case of such a code being given after
3132 the end of a data transmission (i.e. after ".") Exim was failing to write
3133 a retry record for the message. (Yes, there was some broken host that was
3134 actually sending 8xx at this point.)
3135
313673. An unknown lookup type in a host list could cause Exim to panic-die when
3137 the list was checked. (An example that provoked this was putting <; in the
3138 middle of a list instead of at the start.) If this happened during a DATA
3139 ACL check, a -D file could be left lying around. This kind of configuration
3140 error no longer causes Exim to die; instead it causes a defer errror. The
3141 incident is still logged to the main and panic logs.
3142
314374. Buglet left over from Exim 3 conversion. The message "too many messages
3144 in one connection" was written to the rejectlog but not the mainlog, except
3145 when address rewriting (yes!) was being logged.
3146
314775. Added write_rejectlog option.
3148
314976. When a system filter was run not as root (that is, when system_filter_user
3150 was set), the values of the $n variables were not being returned to the
3151 main process; thus, they were not subsequently available in the $sn
3152 variables.
3153
315477. Added +return_path_on_delivery log selector.
3155
315678. A connection timeout was being treated differently from recipients deferred
3157 when testing hosts_max_try with a message that was older than the host's
3158 retry timeout. (The host should not be counted, thus allowing all hosts to
3159 be tried at least once before bouncing.) This may have been the cause of an
3160 occasionally reported bug whereby a message would remain on the queue
3161 longer than the retry timeout, but would be bounced if a delivery was
3162 forced. I say "may" because I never totally pinned down the problem;
3163 setting up timeout/retry tests is difficult. See also the next item.
3164
316579. The ultimate address timeout was not being applied to errors that involved
3166 a combination of host plus message (for example, a timeout on a MAIL
3167 command). When an address resolved to a number of possible hosts, and they
3168 were not all tried for each delivery (e.g. because of hosts_max_try), a
3169 message could remain on the queue longer than the retry timeout.
3170
317180. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3172 Haardt.
3173
317481. Fixed an obscure SMTP outgoing bug which required at least the following
3175 conditions: (a) there was another message waiting for the same server;
3176 (b) the server returned 5xx to all RCPT commands in the first message so
3177 that the message was not completed; (c) the server dropped the connection
3178 or gave a negative response to the RSET that Exim sends to abort the
3179 transaction. The observed case was a dropped connection after DATA that had
3180 been sent in pipelining mode. That is, the server had advertised PIPELINING
3181 but was not implementing it correctly. The effect of the bug was incorrect
3182 behaviour, such as trying another host, and this could lead to a crash.
3183
3184
3185Exim version 4.30
3186-----------------
3187
3188 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3189 and daemon.c were passed as pointers to ints; they should have been
3190 pointers to socklen_t variables (which are typically unsigned ints).
3191
3192 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3193 fixed.
3194
3195 3. Fixed a really odd bug that affected only the testing scheme; patching a
3196 certain fixed string in the binary changed the value of another string that
3197 happened to be identical to the end of the original first string.
3198
3199 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3200 name", it returns that address as the IP address. On some operating
3201 systems (e.g. Solaris), it also passes back the IP address string as the
3202 "host name". However, on others (e.g. Linux), it passes back an empty
3203 string. Exim wasn't checking for this, and was changing the host name to an
3204 empty string, assuming it had been canonicized.
3205
3206 5. Although rare, it is permitted to have more than one PTR record for a given
3207 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3208 all the names associated with an address, because they do in Solaris.
3209 However, it seems that they do not in Linux for data that comes from the
3210 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3211 I found this out when I moved to a new Linux workstation and tried to run
3212 the Exim test suite.
3213
3214 To get round this problem I have changed the code so that it now does its
3215 own call to the DNS to look up PTR records when searching for a host name.
3216 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3217 addresses that are only in /etc/hosts are still found.
3218
3219 This behaviour is, however, controlled by an option called host_lookup_
3220 order, which defaults to "bydns:byaddr". If people want to use the other
3221 order, or indeed, just use one or the other means of lookup, they can
3222 specify it in this variable.
3223
3224 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3225 some operating systems, this comes back from gethostbyaddr() as an empty
3226 string, and this is what Exim used to test for. However, it seems that in
3227 other systems, "." is yielded. Exim now tests for this case too.
3228
3229 7. The values of check_spool_space and check_log_space are now held internally
3230 as a number of kilobytes instead of an absolute number of bytes. If a
3231 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3232 kilobyte. This means that much larger values can be stored.
3233
3234 8. Exim monitor: an attempt to get the action menu when not actually pointing
3235 at a message produces an empty menu entitled "No message selected". This
3236 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3237 no entries in it ("Shell widget menu has zero width and/or height"). So I
3238 have added a single, blank menu entry in this case.
3239
3240 9. Added ${quote_local_part.
3241
324210. MIME decoding is now applied to the contents of Subject: header lines when
3243 they are logged.
3244
324511. Now that a reference to $sender_host_address automatically causes a reverse
3246 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3247 host lookup before query-style lookups in lists that might use this
3248 variable. This has therefore been abolished, and the "net-" prefix is no
3249 longer necessary for query-style lookups.
3250
325112. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3252 have been a typo for LFLAGS, so it has been changed.
3253
325413. The install script calls Exim with "-C /dev/null" in order to find the
3255 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3256 to be output. Howeve, since Exim outputs its version number before the
3257 error, it didn't break the script. It just looked ugly. I fixed this by
3258 always allowing "-C /dev/null" if the caller is root.
3259
326014. Ignore overlarge ACL variable number when reading spool file - insurance
3261 against a later release with more variables having written the file.
3262
326315. The standard form for an IPv6 address literal was being rejected by EHLO.
3264 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3265 this, as well as the form without the "IPv6" on the front.
3266
326716. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3268 OS/Makefile-Darwin file.
3269
327017. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3271 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3272
327318. After change 4.21/52, "%ld" was used to format the contents of the $inode
3274 variable. However, some OS use ints for inodes. I've added cast to long int
3275 to get rid of the compiler warning.
3276
327719. I had forgotten to lock out "/../" in configuration file names when
3278 ALT_CONFIG_PREFIX was set.
3279
328020. Routers used for verification do not need to specify transports. However,
3281 if such a router generated a host list, and callout was configured, Exim
3282 crashed, because it could not find a port number from the (non-existent)
3283 transport. It now assumes port 25 in this circumstance.
3284
328521. Added the -t option to exigrep.
3286
328722. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3288 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3289 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3290 them is set, LOOKUP_LSEARCH is forced.
3291
329223. "exim -bV" now outputs a list of lookups that are included in the binary.
3293
329424. Added sender and host information to the "rejected by local_scan()" log
3295 line; previously there was no indication of these.
3296
329725. Added .include_if_exists.
3298
329926. Change 3.952/11 added an explicit directory sync on top of a file sync for
3300 Linux. It turns out that not all file systems support this. Apparently some
3301 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3302 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3303 not supported on the file descriptor, is now ignored when Exim is trying to
3304 sync a directory. This applies only to Linux.
3305
330627. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3307
330828. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3309 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3310 this.
3311
331229. Added support for maildirsize files from supplied patch (modified a bit).
3313
331430. The use of :fail: followed by an empty string could lead Exim to respond to
3315 sender verification failures with (e.g.):
3316
3317 550 Verification failed for <xxx>
3318 550 Sender verify failed
3319
3320 where the first response line was missing the '-' that indicates it is not
3321 the final line of the response.
3322
332331. The loop for finding the name of the user that called Exim had a hardwired
3324 limit of 10; it now uses the value of finduser_retries, which is used for
3325 all other user lookups.
3326
332732. Added $received_count variable, available in data and not_smtp ACLs, and at
3328 delivery time.
3329
333033. Exim was neglecting to zero errno before one call of strtol() when
3331 expanding a string and expecting an integer value. On some systems this
3332 resulted in spurious "integer overflow" errors. Also, it was casting the
3333 result into an int without checking.
3334
333534. Testing for a connection timeout using "timeout_connect" in the retry rules
3336 did not work. The code looks as if it has *never* worked, though it appears
3337 to have been documented since at least releast 1.62. I have made it work.
3338
333935. The "timeout_DNS" error in retry rules, also documented since at least
3340 1.62, also never worked. As it isn't clear exactly what this means, and
3341 clearly it isn't a major issue, I have abolished the feature by treating it
3342 as "timeout", and writing a warning to the main and panic logs.
3343
334436. The display of retry rules for -brt wasn't always showing the error code
3345 correctly.
3346
334737. Added new error conditions to retry rules: timeout_A, timeout_MX,
3348 timeout_connect_A, timeout_connect_MX.
3349
335038. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3351 to the empty sender.
3352
335339. The daemon was not analysing the content of -oX till after it had closed
3354 stderr and disconnected from the controlling terminal. This meant that any
3355 syntax errors were only noted on the panic log, and the return code from
3356 the command was 0. By re-arranging the code a little, I've made the
3357 decoding happen first, so such errors now appear on stderr, and the return
3358 code is 1. However, the actual setting up of the sockets still happens in
3359 the disconnected process, so errors there are still only recorded on the
3360 panic log.
3361
336240. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3363 connections (as happens on some IP stacks) was logged at start up time as
3364 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3365 it from "IPv6 and IPv4", which means that two separate sockets are being
3366 used.
3367
336841. The debug output for gethostbyname2() or getipnodebyname() failures now
3369 says whether AF_INET or AF_INET6 was passed as an argument.
3370
337142. Exiwhat output was messed up when time zones were included in log
3372 timestamps.
3373
337443. Exiwhat now gives more information about the daemon's listening ports,
3375 and whether -tls-on-connect was used.
3376
337744. The "port" option of the smtp transport is now expanded.
3378
337945. A "message" modifier in a "warn" statement in a non-message ACL was being
3380 silently ignored. Now an error message is written to the main and panic
3381 logs.
3382
338346. There's a new ACL modifier called "logwrite" which writes to a log file
3384 as soon as it is encountered.
3385
338647. Added $local_user_uid and $local_user_gid at routing time.
3387
338848. Exim crashed when trying to verify a sender address that was being
3389 rewritten to "<>".
3390
339149. Exim was recognizing only a space character after ".include". It now also
3392 recognizes a tab character.
3393
339450. Fixed several bugs in the Perl script that creates the exim.8 man page by
3395 extracting the relevant information from the specification. The man page no
3396 longer contains scrambled data for the -d option, and I've added a section
3397 at the front about calling Exim under different names.
3398
339951. Added "extra_headers" argument to the "mail" command in filter files.
3400
340152. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3402 crash.
3403
340453. Installed eximstats 1.29.
3405
340654. Added transport_filter_timeout as a generic transport option.
3407
340855. Exim no longer adds an empty Bcc: header to messages that have no To: or
3409 Cc: header lines. This was required by RFC 822, but it not required by RFC
3410 2822.
3411
341256. Exim used to add From:, Date:, and Message-Id: header lines to any
3413 incoming messages that did not have them. Now it does so only if the
3414 message originates locally, that is, if there is no associated remote host
3415 address. When Resent- header lines are present, this applies to the Resent-
3416 lines rather than the non-Resent- lines.
3417
341857. Drop incoming SMTP connection after too many syntax or protocol errors. The
3419 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3420
342158. Messages for configuration errors now include the name of the main
3422 configuration file - useful now that there may be more than one file in a
3423 list (.included file names were always shown).
3424
342559. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3426 for those rare installations that do not start the daemon as root or run it
3427 setuid root. I've cut out the call to initgroups() if the daemon is not
3428 root at that time.
3429
343060. The Exim user and group can now be bound into the binary as text strings
3431 that are looked up at the start of Exim's processing.
3432
343361. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3434
343562. Added $mailstore_basename variable.
3436
343763. Installed patch to sieve.c from Michael Haardt.
3438
343964. When Exim failed to open the panic log after failing to open the main log,
3440 the original message it was trying to log was written to stderr and debug
3441 output, but if they were not available (the usual case in production), it
3442 was lost. Now it is written to syslog before the two lines that record the
3443 failures to open the logs.
3444
344565. Users' Exim filters run in subprocesses under the user's uid. It is
3446 possible for a "deliver" command or an alias in a "personal" command to
3447 provoke an address rewrite. If logging of address rewriting is configured,
3448 this fails because the process is not running as root or exim. There may be
3449 a better way of dealing with this, but for the moment (because 4.30 needs
3450 to be released), I have disabled address rewrite logging when running a
3451 filter in a non-root, non-exim process.
3452
3453
3454Exim version 4.24
3455-----------------
3456
3457 1. The buildconfig auxiliary program wasn't quoting the value set for
3458 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3459 not defined. This bug was masked in 4.22 by the effect that was fixed in
3460 change 4.23/1.
3461
3462 2. Some messages that were rejected after a message id was allocated were
3463 shown as "incomplete" by exigrep. It no longer does this for messages that
3464 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3465
3466 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3467 have allow_domain_literals set, the ID did not get logged in the <= line.
3468 Domain literals are now always recognized in Message-ID: header lines.
3469
3470 4. The first argument for a ${extract expansion item is the key name or field
3471 number. Leading and trailing spaces in this item were not being ignored,
3472 causing some misleading effects.
3473
3474 5. When deliver_drop_privilege was set, single queue runner processes started
3475 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3476 same command in the process it spins off) were not dropping privilege.
3477
3478 6. When the daemon running as "exim" started a queue runner, it always
3479 re-executed Exim in the spun-off process. This is a waste of effort when
3480 deliver_drop_privilege is set. The new process now just calls the
3481 queue-runner function directly.
3482
3483
3484Exim version 4.23
3485-----------------
3486
3487 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3488 HEADERS_CHARSET.
3489
3490 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3491 ignored. Though the use of -oP was forcing the writing of a pid file, it
3492 was always written to the default place.
3493
3494 3. If the message "no IP address found for host xxxx" is generated during
3495 incoming verification, it is now followed by identification of the incoming
3496 connection (so you can more easily find what provoked it).
3497
3498 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3499
3500 5. Added some features to "harden" Exim a bit more against certain attacks:
3501
3502 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3503 be put in Local/Makefile. This is like the never_users runtime option,
3504 but it cannot be overridden. The default setting is "root".
3505
3506 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3507 prefix string with which any file named in a -C command line option
3508 must start.
3509
3510 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3511 is retained for -C and -D only if the caller of Exim is root. Without
3512 it, the exim user may also use -C and -D and retain privilege.
3513
3514 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3515 command line option is disabled.
3516
3517 6. Macro names set by the -D option must start with an upper case letter, just
3518 like macro names defined in the configuration file.
3519
3520 7. Added "dereference=" facility to LDAP.
3521
3522 8. Two instances of the typo "uknown" in the source files are fixed.
3523
3524 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3525 the Configure-Makefile script screwed up while processing it.
3526
352710. Incorporated PCRE 4.4.
3528
352911. The SMTP synchronization check was not operating right at the start of an
3530 SMTP session. For example, it could not catch a HELO sent before the client
3531 waited for the greeting. There is now a check for outstanding input at the
3532 point when the greeting is written. Because of the duplex, asynchronous
3533 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3534 way, but not yet received, when the check is performed.
3535
353612. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3537 on TCP/IP sockets, because this apparently causes some broken clients to
3538 timeout.
3539
354013. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3541 unchanged) from the Cygwin maintainer.
3542
354314. The code for -bV that shows what is in the binary showed "mbx" when maildir
3544 was supported instead of testing for mbx. Effectively a typo.
3545
354615. The spa authenticator server code was not checking that the input it
3547 received was valid base64.
3548
354916. The debug output line for the "set" modifier in ACLs was not showing the
3550 name of the variable that was being set.
3551
355217. Code tidy: the variable type "vtype_string" was never used. Removed it.
3553
355418. Previously, a reference to $sender_host_name did not cause a DNS reverse
3555 lookup on its own. Something else was needed to trigger the lookup. For
3556 example, a match in host_lookup or the need for a host name in a host list.
3557 Now, if $sender_host_name is referenced and the host name has not yet been
3558 looked up, a lookup is performed. If the lookup fails, the variable remains
3559 empty, and $host_lookup_failed is set to "1".
3560
356119. Added "eqi" as a case-independent comparison operator.
3562
356320. The saslauthd authentication condition could segfault if neither service
3564 nor realm was specified.
3565
356621. If an overflowing value such as "2048M" was set for message_size_limit, the
3567 error message that was logged was misleading, and incoming SMTP
3568 connections were dropped. The message is now more accurate, and temporary
3569 errors are given to SMTP connections.
3570
357122. In some error situations (such as 21 above) Exim rejects all SMTP commands
3572 (except RSET) with a 421 error, until QUIT is received. However, it was
3573 failing to send a response to QUIT.
3574
357523. The HELO ACL was being run before the code for helo_try_verify_hosts,
3576 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3577 ACL is now run after the helo_try_verify_hosts code.
3578
357924. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3580 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3581 case-independent, so other case variants are also recognized). Apparently
3582 some systems use these upper case variants.
3583
358425. If more than two messages were waiting for the same host, and a transport
3585 filter was specified for the transport, Exim sent two messages over the
3586 same TCP/IP connection, and then failed with "socket operation on non-
3587 socket" when it tried to send the third.
3588
358926. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3590
359127. The extern definition of crypt16() in expand.c was not being excluded when
3592 the OS had its own crypt16() function.
3593
359428. Added bounce_return_body as a new option, and bounce_return_size_limit
3595 as a preferred synonym for return_size_limit, both as an option and as an
3596 expansion variable.
3597
359829. Added LIBS=-liconv to OS/Makefile-OSF1.
3599
360030. Changed the default configuration ACL to relax the local part checking rule
3601 for addresses that are not in any local domains. For these addresses,
3602 slashes and pipe symbols are allowed within local parts, but the sequence
3603 /../ is explicitly forbidden.
3604
360531. SPA server authentication was not clearing the challenge buffer before
3606 using it.
3607
360832. log_message in a "warn" ACL statement was writing to the reject log as
3609 well as to the main log, which contradicts the documentation and doesn't
3610 seem right (because no rejection is happening). So I have stopped it.
3611
361233. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3613 However, I am unable to do any testing of this.
3614
361534. Fixed an infelicity in the appendfile transport. When checking directories
3616 for a mailbox, to see if any needed to be created, it was accidentally
3617 using path names with one or more superfluous leading slashes; tracing
3618 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3619
362035. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3621 contents are added to the log line that is written for every discarded
3622 recipient. (Previously a log_message setting was ignored.)
3623
362436. The ${quote: operator now quotes the string if it is empty.
3625
362637. The install script runs exim in order to find its version number. If for
3627 some reason other than non-existence or emptiness, which it checks, it
3628 could not run './exim', it was installing it with an empty version number,
3629 i.e. as "exim-". This error state is now caught, and the installation is
3630 aborted.
3631
363238. An argument was missing from the function that creates an error message
3633 when Exim fails to connect to the socket for saslauthd authentication.
3634 This could cause Exim to crash, or give a corrupted message.
3635
363639. Added isip, isip4, and isip6 to ${if conditions.
3637
363840. The ACL variables $acl_xx are now saved with the message, and can be
3639 accessed later in routers, transports, and filters.
3640
364141. The new lookup type nwildlsearch is like wildlsearch, except that the key
3642 strings in the file are not string-expanded.
3643
364442. If a MAIL command specified a SIZE value that was too large to fit into an
3645 int variable, the check against message_size_limit failed. Such values are
3646 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3647 day this will have to be increased, but I don't think I want to be around