More 4.63 documentation (noticed an important bit missing at the very
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
e85a7ad5 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.385 2006/07/28 11:39:11 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
e85a7ad5 96PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
97 so that it is now:
98
e85a7ad5
PH
99 ${if or { \
100 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
101 { match{$h_precedence:}{(?i)bulk|list|junk} } \
102 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
103 }{no}{yes}}
104
e85a7ad5
PH
105 The Auto-Submitted: and various List- headers are standardised, whereas I
106 don't think Precedence: ever was.
5dff5817 107
d8fe1c03
PH
108PH/18 Refactored debugging code in route_finduser() to show more information,
109 in particular, the error code if getpwnam() issues one.
110
16282d2b
PH
111PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
112 This is apparently needed in addition to the PH/07 change above to avoid
113 any possible encoding problems.
114
35d40a98
PH
115PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
116 but not after initializing Perl.
117
034d99ab
PH
118PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
119 output them only if debugging. By default they are written stderr,
120 apparently, which is not desirable.
121
6ec97b1b
PH
122PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
123 queries.
124
e22ca4ac
JJ
125JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
126 --not options
127
128JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
129
33d73e3b
PH
130PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
131 authenticated or an ident call has been made. Suppress the default
132 values for $authenticated_id and $authenticated_sender (but permit -oMai
133 and -oMas) when testing with -bh.
134
9ecb03f3
PH
135PH/24 Re-jigged the order of the tests in the default configuration so that the
136 tests for valid domains and recipients precede the DNS black list and CSA
137 tests, on the grounds that those ones are more expensive.
138
084efe8d
PH
139PH/25 Exim was not testing for a space following SMTP commands such as EHLO
140 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
141 This bug exists in every version of Exim that I still have, right back to
142 0.12.
143
366fc9f0
PH
144PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
145 However, an attempt to turn on case-sensitivity in a regex key by
146 including (?-i) didn't work because the subject string was already
147 lowercased, and the effects were non-intuitive. It turns out that a
148 one-line patch can be used to allow (?-i) to work as expected.
149
c59f5781 150
c887c79e
TF
151Exim version 4.62
152-----------------
153
154TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
155 other effects) broke the use of negated acl sub-conditions.
156
1cce3af8
PH
157PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
158 patch).
159
afb3eaaf
PH
160PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
161 "Deny" causes Exim to reject the incoming connection with a 554 error.
162 Unfortunately, if there is a major crisis, such as a disk failure,
163 tcp-wrappers gives "deny", whereas what one would like would be some
164 kind of temporary error. A kludge has been added to help with this.
165 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
166 554 error is used if errno is still zero or contains ENOENT (which occurs
167 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
168 451 error is used.
169
e173618b
PH
170PH/03 Add -lutil to the default FreeBSD LIBS setting.
171
dd16e114
PH
172PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
173 errors. Otherwise a message that provokes a temporary error (when other
174 messages do not) can cause a whole host to time out.
175
f7fd3850
PH
176PH/05 Batch deliveries by appendfile and pipe transports did not work when the
177 addresses were routed directly to files or pipes from a redirect router.
178 File deliveries just didn't batch; pipe deliveries might have suffered
179 odd errors.
180
d87df92c
PH
181PH/06 A failure to get a lock for a hints database would erroneously always say
182 "Failed to get write lock", even when it was really a read lock.
183
7e9f683d
PH
184PH/07 The appendfile transport was creating MBX lock files with a fixed mode
185 of 0600. This has been changed to use the value of the lockfile_mode
186 option (which defaults to 0600).
187
bfad5236
PH
188PH/08 Applied small patch from the Sieve maintainer.
189
01c490df
PH
190PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
191 folder from quota calculations, a direct delivery into this folder messed
192 up the contents of the maildirsize file. This was because the regex was
193 used only to exclude .Trash (or whatever) when the size of the mailbox
194 was calculated. There was no check that a delivery was happening into an
195 excluded directory. This bug has been fixed by ignoring all quota
196 processing for deliveries into excluded directories.
197
d6629cdc
PH
198PH/10 Added the maildirfolder_create_regex option to appendfile.
199
1cce3af8 200
214e2000
PH
201Exim version 4.61
202-----------------
203
204PH/01 The code for finding all the local interface addresses on a FreeBSD
205 system running IPv6 was broken. This may well have applied to all BSD
206 systems, as well as to others that have similar system calls. The broken
207 code found IPv4 interfaces correctly, but gave incorrect values for the
208 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
209 that it would not match correctly against @[] and not recognize the IPv6
210 addresses as local.
211
f9daeae0
PH
212PH/02 The ipliteral router was not recognizing addresses of the form user@
213 [ipv6:....] because it didn't know about the "ipv6:" prefix.
214
7e66e54d
PH
215PH/03 Added disable_ipv6.
216
c8ea1597
PH
217PH/04 Changed $reply_address to use the raw form of the headers instead of the
218 decoded form, because it is most often used to construct To: headers
219 lines in autoreplies, and the decoded form may well be syntactically
220 invalid. However, $reply_address has leading white space removed, and all
221 newlines turned into spaces so that the autoreply transport does not
222 grumble.
223
911f6fde
PH
224PH/05 If group was specified without a user on a router, and no group or user
225 was specified on a transport, the group from the router was ignored.
226
47ca6d6c
PH
227PH/06 Increased the number of ACL variables to 20 of each type, and arranged
228 for visible compile-time settings that can be used to change these
229 numbers, for those that want even more. Backwards compatibility with old
230 spool files has been maintained. However, going back to a previous Exim
231 release will lost any variables that are in spool files.
232
ed0e9820
PH
233PH/07 Two small changes when running in the test harness: increase delay when
234 passing a TCP/IP connection to a new process, in case the original
235 process has to generate a bounce, and remove special handling of
236 127.0.0.2 (sic), which is no longer necessary.
237
eff37e47
PH
238PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
239 be the same on different OS.
240
1921d2ea
PH
241PH/09 Moved a debug statement in filter processing to avoid a race problem when
242 testing.
243
b3f69ca8
JJ
244JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
245 whether --show-vars was specified or not
246
247JJ/02 exipick: Added support for new ACL variable spool format introduced
248 in 4.61-PH/06
249
424a1c63
PH
250PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
251 syntactically invalid From: or Reply-to: line, and a filter used this to
252 generate an autoreply, and therefore failed to obtain an address for the
253 autoreply, Exim could try to deliver to a non-existent relative file
254 name, causing unrelated and misleading errors. What now happens is that
255 it logs this as a hard delivery error, but does not attempt to create a
256 bounce message.
257
7a100415
PH
258PH/11 The exinext utility has a -C option for testing purposes, but although
259 the given file was scanned by exinext itself; it wasn't being passed on
260 when Exim was called.
261
19b9dc85
PH
262PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
263 an end-of-file indication when reading a command response.
264
309bd837
PH
265PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
266 compiled. In many other places in Exim, IPv6 addresses are always
267 recognized, so I have changed this. It also means that IPv4 domain
268 literals of the form [IPV4:n.n.n.n] are now always recognized.
269
59e82a2a
PH
270PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
271 used if the router is not running as root, for example, when verifying at
272 ACL time, or when using -bh. The debugging output from this situation was
273 non-existent - all you got was a failure to exec. I have made two
274 changes:
275
276 (a) Failures to set uid/gid, the current directory, or a process leader
277 in a subprocess such as that created by queryprogram now generate
278 suitable debugging ouput when -d is set.
279
280 (b) The queryprogram router detects when it is not running as root,
281 outputs suitable debugging information if -d is set, and then runs
282 the subprocess without attempting to change uid/gid.
283
9edc04ce
PH
284PH/15 Minor change to Makefile for building test_host (undocumented testing
285 feature).
286
1349e1e5
PH
287PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
288 additional section of a DNS packet that returns MX or SRV records.
289 Instead, it always explicitly searches for A/AAAA records. This avoids
290 major problems that occur when a DNS server includes only records of one
291 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
292 fixed another bug: if SRV records were looked up and the corresponding
293 address records were *not* found in the additional section, the port
294 values from the SRV records were lost.
295
ea49d0e1
PH
296PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
297 using the correct key (the original address) when searching the retry
298 rules in order to find which one to use for generating the retry hint.
299
064a94c9
PH
300PH/18 If quota_warn_message contains a From: header, Exim now refrains from
301 adding the default one. Similarly, if it contains a Reply-To: header, the
302 errors_reply_to option, if set, is not used.
303
727071f8
PH
304PH/19 When calculating a retry time, Exim used to measure the "time since
305 failure" by looking at the "first failed" field in the retry record. Now
306 it does not use this if it is later than than the arrival time of the
307 message. Instead it uses the arrival time. This makes for better
308 behaviour in cases where some deliveries succeed, thus re-setting the
309 "first failed" field. An example is a quota failure for a huge message
310 when small messages continue to be delivered. Without this change, the
311 "time since failure" will always be short, possible causing more frequent
312 delivery attempts for the huge message than are intended.
dd16e114 313 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 314
f78eb7c6
PH
315PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
316 $1, $2, $3) because the numerical variables can be reset during some
317 expansion items (e.g. "match"), thereby losing the authentication data.
318
21c28500
PH
319PH/21 Make -bV show the size of off_t variables so that the test suite can
320 decide whether to run tests for quotas > 2G.
321
322PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
323 mailbox_size, and mailbox_filecount in the appendfile transport. If a
324 filecount value is greater than 2G or if a quota value is greater than 2G
325 on a system where the size of off_t is not greater than 4, a panic error
326 is given.
327
1688f43b
PH
328PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
329 never match. The debug and -bh output now contains an explicit error
330 message indicating a malformed IPv4 address or mask.
331
332PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
333 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
334 PH/23 above applies.
335
9675b384
PH
336PH/25 Do not write to syslog when running in the test harness. The only
337 occasion when this arises is a failure to open the main or panic logs
338 (for which there is an explicit test).
339
6a3f1455
PH
340PH/26 Added the /no_tell option to "control=freeze".
341
dac79d3e
PH
342PH/27 If a host name lookup failed very early in a connection, for example, if
343 the IP address matched host_lookup and the reverse lookup yielded a name
344 that did not have a forward lookup, an error message of the form "no IP
345 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
346 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 347
5977a0b3
PH
348PH/28 An enabling patch from MH: add new function child_open_exim2() which
349 allows the sender and the authenticated sender to be set when
350 submitting a message from within Exim. Since child_open_exim() is
351 documented for local_scan(), the new function should be too.
352
c91535f3
PH
353PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
354 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
355 results in an empty string is now treated as unset.
356
0d46a8c8
PH
357PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
358
278c6e6c
PH
359PH/31 Added sender_verify_fail logging option.
360
2cbb4081
PH
361PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
362 needed by RFC 822 but not by RFC 2822 was commented out. I have now
363 tidied the source and removed it altogether.
364
3eef829e
PH
365PH/33 When a queue run was abandoned because the load average was too high, a
366 log line was always written; now it is written only if the queue_run log
367 selector is set. In addition, the log line for abandonment now contains
368 information about the queue run such as the pid. This is always present
369 in "start" and "stop" lines but was omitted from the "abandon" line.
370
1ab95fa6
PH
371PH/34 Omit spaces between a header name and the colon in the error message that
372 is given when verify = headers_syntax fails (if there are lots of them,
373 the message gets confusing).
374
230205fc
PH
375PH/35 Change the default for dns_check_names_pattern to allow slashes within
376 names, as there are now some PTR records that contain slashes. This check
377 is only to protect against broken name servers that fall over on strange
378 characters, so the fact that it applies to all lookups doesn't matter.
379
75e0e026
PH
380PH/36 Now that the new test suite is complete, we can remove some of the
381 special code in Exim that was needed for the old test suite. For example,
382 sorting DNS records because real resolvers return them in an arbitrary
383 order. The new test suite's fake resolver always returns records in the
384 same order.
385
386PH/37 When running in the test harness, use -odi for submitted messages (e.g.
387 bounces) except when queue_only is set, to avoid logging races between
388 the different processes.
389
145396a6
PH
390PH/38 Panic-die if .include specifies a non-absolute path.
391
3cd34f13
PH
392PH/39 A tweak to the "H" retry rule from its user.
393
11121d3d
JJ
394JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
395 a label. They prevented compilation on older perls.
396
397JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
398 a warning to be raised on newish perls.
399
400JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
401 on queue. Changes to match documented behaviour of showing count of
402 messages matching specified criteria.
403
8def5aaf
PH
404PH/40 Changed the default ident timeout from 30s to 5s.
405
929ba01c
PH
406PH/41 Added support for the use of login_cap features, on those BSD systems
407 that have them, for controlling the resources used by pipe deliveries.
408
2632889e
PH
409PH/42 The content-scanning code uses fopen() to create files in which to put
410 message data. Previously it was not paying any attention to the mode of
411 the files. Exim runs with umask(0) because the rest of the code creates
412 files with open(), and sets the required mode explicitly. Thus, these
413 files were ending up world-writeable. This was not a big issue, because,
414 being within the spool directory, they were not world-accessible. I have
415 created a function called modefopen, which takes an additional mode
416 argument. It sets umask(777), creates the file, chmods it to the required
417 mode, then resets the umask. All the relevant calls to fopen() in the
418 content scanning code have been changed to use this function.
419
944a9c55
PH
420PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
421 to 24 hours. This avoids potential overflow problems when processing G
422 and H retry rules. I suspect nobody ever tinkers with this value.
423
4a23603b
PH
424PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
425
4730f942
PH
426PH/45 When the plaintext authenticator is running as a client, the server's
427 challenges are checked to ensure they are valid base64 strings. By
428 default, the authentication attempt is cancelled if an invalid string is
429 received. Setting client_ignore_invalid_base64 true ignores these errors.
430 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
431 they are received. Thus, the responses can be made to depend on the
432 challenges. If an invalid string is ignored, an empty string is placed in
433 the variable.
434
30dba1e6
PH
435PH/46 Messages that are created by the autoreply transport now contains a
436 References: header, in accordance with RFCs 2822 and 3834.
437
382afc6b
PH
438PH/47 Added authenticated_sender_force to the smtp transport.
439
a86229cf
PH
440PH/48 The ${prvs expansion was broken on systems where time_t was long long.
441
50c99ba6
PH
442PH/49 Installed latest patch from the Sieve maintainer.
443
d35e429d
PH
444PH/50 When an Exim quota was set without a file count quota, and mailbox_size
445 was also set, the appendfile transport was unnecessarily scanning a
446 directory of message files (e.g. for maildir delivery) to find the count
447 of files (along with the size), even though it did not need this
448 information. It now does the scan only if it needs to find either the
449 size of the count of files.
450
f90d018c
PH
451PH/51 Added ${time_eval: to convert Exim time strings into seconds.
452
75def545
PH
453PH/52 Two bugs concerned with error handling when the smtp transport is
454 used in LMTP mode:
455
456 (i) Exim was not creating retry information for temporary errors given
457 for individual recipients after the DATA command when the smtp transport
458 was used in LMTP mode. This meant that they could be retried too
459 frequently, and not timed out correctly.
460
461 (ii) Exim was setting the flag that allows error details to be returned
462 for LMTP errors on RCPT commands, but not for LMTP errors for individual
463 recipients that were returned after the DATA command.
464
465PH/53 This is related to PH/52, but is more general: for any failing address,
466 when detailed error information was permitted to be returned to the
467 sender, but the error was temporary, then after the final timeout, only
468 "retry timeout exceeded" was returned. Now it returns the full error as
469 well as "retry timeout exceeded".
470
c46782ef
PH
471PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
472 do this, and (what is worse) MTAs that accept it.
473
71fafd95
PH
474PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
475 will now be deprecated.
476
2c5db4fd
PH
477PH/56 New os.c-cygwin from the Cygwin maintainer.
478
9cf6b11a
JJ
479JJ/06 exipick: added --unsorted option to allow unsorted output in all output
480 formats (previously only available in exim formats via -bpr, -bpru,
481 and -bpra. Now also available in native and exiqgrep formats)
482
483JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
484 with very large, slow to parse queues
485
486JJ/08 exipick: added ! as generic prefix to negate any criteria format
487
488JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
489
898d150f
PH
490PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
491 responses to authentication challenges, though it was showing the
492 challenges; (ii) I've removed the CR characters from the debug output for
493 SMTP output lines.
494
46218253
PH
495PH/58 Allow for the insertion of a newline as well as a space when a string
496 is turned into more than one encoded-word during RFC 2047 encoding. The
497 Sieve code now uses this.
498
e97957bc
PH
499PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
500 data_4xx, lost_connection, tls_required.
501
81e509d7
PH
502PH/60 When a VRFY deferred or FAILED, the log message rather than the user
503 message was being sent as an SMTP response.
504
3d240ff7
PH
505PH/61 Add -l and -k options to exicyclog.
506
b37c4101
PH
507PH/62 When verifying, if an address was redirected to one new address, so that
508 verification continued, and the new address failed or deferred after
509 having set something in $address_data, the value of $address_data was not
510 passed back to the ACL. This was different to the case when no
511 redirection occurred. The value is now passed back in both cases.
512
79378e0f
PH
513PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
514 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
515 use login_cap.h, so on its own it isn't the distinguishing feature. The
516 new name refers directly to the setclassresources() function.
517
e49c7bb4
PH
518PH/65 Added configuration files for NetBSD3.
519
d114ec46
PH
520PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
521
f3d7df6c
PH
522PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
523 is preferred over IPv4.
524
715ab376
PH
525PH/68 The bounce_return_message and bounce_return_body options were not being
526 honoured for bounces generated during the reception of non-SMTP messages.
527 In particular, this applied to messages rejected by the ACL. This bug has
528 been fixed. However, if bounce_return_message is true and bounce_return_
529 body is false, the headers that are returned for a non-SMTP message
530 include only those that have been read before the error was detected.
531 (In the case of an ACL rejection, they have all been read.)
532
6b31b150
PH
533PH/69 The HTML version of the specification is now built in a directory called
534 spec_html instead of spec.html, because the latter looks like a path with
535 a MIME-type, and this confuses some software.
536
537PH/70 Catch two compiler warnings in sieve.c.
538
d515a917
PH
539PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
540 function verify_get_ident() calls ip_connect() to connect a socket, but
541 if the "connect()" function timed out, ip_connect() used to close the
542 socket. However, verify_get_ident() also closes the socket later, and in
543 between Exim writes to the log, which may get opened at this point. When
544 the socket was closed in ip_connect(), the log could get the same file
545 descriptor number as the socket. This naturally causes chaos. The fix is
546 not to close the socket in ip_connect(); the socket should be closed by
547 the function that creates it. There was only one place in the code where
548 this was missing, in the iplookup router, which I don't think anybody now
549 uses, but I've fixed it anyway.
550
9b8fadde
PH
551PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
552 well as to direct DNS lookups. Otherwise the handling of names in host
553 lists is inconsistent and therefore confusing.
554
214e2000 555
5de37277
PH
556Exim version 4.60
557-----------------
558
cc38ddbf
PH
559PH/01 Two changes to the default runtime configuration:
560
561 (1) Move the checks for relay_from_hosts and authenticated clients from
562 after to before the (commented out) DNS black list checks.
563
564 (2) Add control=submission to the relay_from_hosts and authenticated
565 clients checks, on the grounds that messages accepted by these
566 statements are most likely to be submissions.
5de37277 567
72fdd6ae
PH
568PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
569
570 (1) Generate an error if the third argument for the ${prvs expansion is
571 not a single digit.
572
573 (2) Treat a missing third argument of ${prvscheck as if it were an empty
574 string.
575
576 (3) Reset the variables that are obtained from the first argument of
577 ${prvscheck and used in the second argument before leaving the code,
578 because their memory is reclaimed, so using them afterwards may do
579 silly things.
580
581 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
582 one (it's much easier than Tom thought :-).
583
584 (5) Because of (4), we can now allow for the use of $prvscheck_result
585 inside the third argument.
cb9328de 586
cb741023
PH
587PH/03 For some reason, the default setting of PATH when running a command from
588 a pipe transport was just "/usr/bin". I have changed it to
589 "/bin:/usr/bin".
590
f174f16e
PH
591PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
592 anything to be listed in the output from -bV.
b2f5a032 593
c25242d7
PH
594PH/05 When a filter generated an autoreply, the entire To: header line was
595 quoted in the delivery log line, like this:
596
597 => >A.N.Other <ano@some.domain> <original@ddress> ...
598
599 This has been changed so that it extracts the operative address. There
600 may be more than one such address. If so, they are comma-separated, like
601 this:
602
603 => >ano@some.domain,ona@other.domain <original@ddress> ...
604
82c19f95
PH
605PH/06 When a client host used a correct literal IP address in a HELO or EHLO
606 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
607 not being looked up in the rDNS to get a host name, Exim was showing the
608 IP address twice in Received: lines, even though the IP addresses were
609 identical. For example:
610
611 Received: from [1.2.3.4] (helo=[1.2.3.4])
612
613 However, if the real host name was known, it was omitting the HELO data
614 if it matched the actual IP address. This has been tidied up so that it
615 doesn't show the same IP address twice.
616
d7ffbc12
PH
617PH/07 When both +timestamp and +memory debugging was on, the value given by
618 $tod_xxx expansions could be wrong, because the tod_stamp() function was
619 called by the debug printing, thereby overwriting the timestamp buffer.
620 Debugging no longer uses the tod_stamp() function when +timestamp is set.
621
9f526266
PH
622PH/08 When the original message was included in an autoreply transport, it
623 always said "this is a copy of the message, including all the headers",
624 even if body_only or headers_only was set. It now gives an appropriate
625 message.
626
87fcc8b9
PH
627PH/09 Applied a patch from the Sieve maintainer which:
628
629 o fixes some comments
630 o adds the (disabled) notify extension core
631 o adds some debug output for the result of if/elsif tests
632 o points to the current vacation draft in the documentation
633 and documents the missing references header update
634
635 and most important:
636
637 o fixes a bug in processing the envelope test (when testing
638 multiple envelope elements, the last element determinted the
639 result)
640
456682f5
PH
641PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
642 Electronic Mail") by including:
643
644 Auto-submitted: auto-generated
645
646 in the messages that it generates (bounce messages and others, such as
647 warnings). In the case of bounce messages for non-SMTP mesages, there was
648 also a typo: it was using "Auto_submitted" (underscore instead of
649 hyphen). Since every message generated by Exim is necessarily in response
650 to another message, thes have all been changed to:
651
652 Auto-Submitted: auto-replied
653
654 in accordance with these statements in the RFC:
655
656 The auto-replied keyword:
657
658 - SHOULD be used on messages sent in direct response to another
659 message by an automatic process,
660
661 - MUST NOT be used on manually-generated messages,
662
663 - MAY be used on Delivery Status Notifications (DSNs) and Message
664 Disposition Notifications (MDNs),
665
666 - MUST NOT be used on messages generated by automatic or periodic
667 processes, except for messages which are automatic responses to
668 other messages.
669
3e46c1aa
PH
670PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
671 to the default Received: header definition.
456682f5 672
49826d12
PH
673PH/12 Added log selector acl_warn_skipped (default on).
674
eba0c039
PH
675PH/13 After a successful wildlsearch lookup, discard the values of numeric
676 variables because (a) they are in the wrong storage pool and (b) even if
677 they were copied, it wouldn't work properly because of the caching.
678
a0d6ba8a
PH
679PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
680 checking when decoding. Apparently there are clients that generate
681 overlong encoded strings. Why am I not surprised?
682
f0917727
PH
683PH/15 If the first argument of "${if match_address" was not empty, but did not
684 contain an "@" character, Exim crashed. Now it writes a panic log message
685 and treats the condition as false.
686
096fee00
PH
687PH/16 In autoreply, treat an empty string for "once" the same as unset.
688
024bd3c2
PH
689PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
690 extension "envelope-auth". The code is finished and in agreement with
691 other implementations, but there is no documentation so far and in fact,
692 nobody wrote the draft yet. This extension is currently #undef'ed, thus
693 not changing the active code.
694
695 Print executed "if" and "elsif" statements when debugging is used. This
696 helps a great deal to understand what a filter does.
697
698 Document more things not specified clearly in RFC3028. I had all this
699 sorted out, when out of a sudden new issues came to my mind. Oops."
700
df199fec
PH
701PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
702 (Bugzilla #53).
703
d27f1df3
PH
704PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
705 canonical form (as documented). However, after a host name lookup from
706 the IP address, check_host() was doing a simple string comparison with
707 addresses acquired from the DNS when checking that the found name did
708 have the original IP as one of its addresses. Since any found IPv6
709 addresses are likely to be in abbreviated form, the comparison could
710 fail. Luckily, there already exists a function for doing the comparison
711 by converting both addresses to binary, so now that is used instead of
712 the text comparison.
713
96776534
PH
714PH/20 There was another similar case to PH/19, when a complete host name was
715 given in a host list; looking up its IP address could give an abbreviated
716 form, whereas the current host's name might or might not be abbreviated.
717 The same fix has been applied.
718
5de37277 719
9a799bc0
PH
720Exim version 4.54
721-----------------
722
723PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
724 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
725 It now does.
726
99a4b039
PH
727PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
728 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
729
730PH/03 Typo: missing ".o" in src/pcre/Makefile.
731
4b233853
PH
732PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
733 header line, restrict the check to what is listed in RFCs 2369 and 2929.
734 Also, for "Auto-Submitted", treat anything other than "no" as
735 non-personal, in accordance with RFC 3834. (Previously it treated
736 anything starting "auto-" as non-personal.)
737
8857ccfd
PH
738TF/01 The control=submission/name=... option had a problem with syntax
739 errors if the name included a slash character. The /name= option
740 now slurps the rest of the string, so it can include any characters
741 but it must come last in the list of options (after /sender_retain
742 or /domain=).
743
433a2980
PH
744PH/05 Some modifications to the interface to the fake nameserver for the new
745 testing suite.
746
3e46c1aa 747
9a799bc0 748
e3a311ba
TK
749Exim version 4.53
750-----------------
751
752TK/01 Added the "success_on_redirect" address verification option. See
753 NewStuff for rationale and an example.
754
13b685f9
PH
755PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
756
395ff96d
PH
757PH/02 Patch to exigrep to allow it to work on syslog lines.
758
5b68f6e4
PH
759PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
760 fread() to skip over the body file's header line, because in Cygwin the
761 header line is locked and is inaccessible.
762
1ab52c69
PH
763PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
764 co-exist for some time) to make it clear that it is the Exim ID that is
765 referenced, not the Message-ID: header line.
766
b07e6aa3
PH
767PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
768 string_format() function, because snprintf() does not exist on all
769 operating systems.
770
254e032f
PH
771PH/06 The use of forbid_filter_existstest now also locks out the use of the
772 ${stat: expansion item.
773
3af76a81
PH
774PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
775 protocol synchronization error", to keep the pedants happy.
776
2548ba04
PH
777PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
778 well as for IRIX systems, when gcc is being used. See the host.c source
779 file for comments.
780
b6c6011d
PH
781PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
782
cf39cf57
PH
783PH/10 Named domain lists were not working if used in a queue_smtp_domains
784 setting.
785
f1513293
PH
786PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
787 transport and to the smtp transport in LMTP mode.
788
727549a4
PH
789TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
790
af46795e
PH
791PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
792 run a filter in a subprocess. This could lead to confusion in subsequent
793 lookups in the parent process. There should also be a search_tidyup() at
794 the end of the subprocess.
795
d7b47fd0
PH
796PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
797 only if the host matched helo_try_verify_hosts, which caused the
798 verification to occur when the EHLO/HELO command was issued. The ACL just
799 tested the remembered result. Now, if a previous verification attempt has
800 not happened, "verify = helo" does it there and then.
801
ee744174
JJ
802JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
803
b582ab87
PH
804TK/03 Fix log output including CR from clamd.
805
41a13e0a
PH
806PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
807 exist provoked a memory error which could cause a segfault.
808
f625cc5a
PH
809PH/15 Installed PCRE 6.2
810
811PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
812
21f7af35
PH
813PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
814 of the problem. Specifically, suggested +O2 rather than +O1 for the
815 HP-UX compiler.
816
31480e42
PH
817PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
818
2d280592
PH
819PH/20 If a delivery was routed to a non-standard port by means of an SRV
820 record, the port was not correctly logged when the outgoing_port log
821 selector was set (it logged the transort's default port).
822
7cd1141b
PH
823PH/21 Added support for host-specific ports to manualroute, queryprogram,
824 fallback_hosts, and "hosts" in the smtp transport.
825
826PH/22 If the log selector "outgoing_port" is set, the port is now also given on
827 host errors such as "Connection refused".
828
750af86e
PH
829PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
830 authentication with radiusclient 0.4.9:
831
832 - Error returned from rc_read_config was caught wrongly
833 - Username/password not passed on to radius server due to wrong length.
834
835 The presumption is that some radiusclient API changes for 4.51/PH/17
836 were not taken care of correctly. The code is still untested by me (my
837 Linux distribution still has 0.3.2 of radiusclient), but it was
838 contributed by a Radius user.
839
840PH/24 When doing a callout, the value of $domain wasn't set correctly when
841 expanding the "port" option of the smtp transport.
842
4304270b
TK
843TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
844 while reading a MIME header. Thanks to Tom Hughes for a patch.
845
750af86e
PH
846PH/24 Include config.h inside local_scan.h so that configuration settings are
847 available.
848
64ffc24f
PH
849PH/25 Make $smtp_command_argument available after all SMTP commands. This means
850 that in an ACL for RCPT (for example), you can examine exactly what was
851 received.
852
5dd9625b
PH
853PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
854 commands, but it was not correctly comparing the address with the actual
855 client host address. Thus, it would show the EHLO address in Received:
856 header lines when this was not necessary.
857
5591031b
PH
858PH/27 Added the % operator to ${eval:}.
859
ba18e66a
PH
860PH/28 Exim tries to create and chdir to its spool directory when it starts;
861 it should be ignoring failures (because with -C, for example, it has lost
862 privilege). It wasn't ignoring creation failures other than "already
863 exists".
864
9cec981f
PH
865PH/29 Added "crypteq" to the list of supported features that Exim outputs when
866 -bV or -d is used.
867
aa2b5c79
PH
868PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
869 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
870 too many continuations, the temporary file was not being removed, and the
871 return code was incorrect.
aa2b5c79 872
48a53b7f
PH
873PH/31 Missing "BOOL" in function definition in filtertest.c.
874
1c59d63b
PH
875PH/32 Applied Sieve patches from the maintainer.
876
671012da
TK
877TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
878
1509d3a8
PH
879PH/33 Added "verify = not_blind".
880
881PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
882 Local/Makefile (with some defaults set). These are used in built scripts
883 such as exicyclog, but they have never been used in the exim_install
884 script (though there are many overriding facilities there). I have
885 arranged that the exim_install script now takes note of these two
886 settings.
887
888PH/35 Installed configuration files for Dragonfly.
889
2fe1a124
PH
890PH/36 When a locally submitted message by a trusted user did not contain a
891 From: header, and the sender address was obtained from -f or from an SMTP
892 MAIL command, and the trusted user did not use -F to supply a sender
893 name, $originator_name was incorrectly used when constructing a From:
894 header. Furthermore, $originator_name was used for submission mode
895 messages from external hosts without From: headers in a similar way,
896 which is clearly wrong.
897
8800895a
PH
898PH/37 Added control=suppress_local_fixups.
899
ccfdb010
PH
900PH/38 When log_selector = +received_sender was set, and the addition of the
901 sender made the log line's construction buffer exactly full, or one byte
902 less than full, an overflow happened when the terminating "\n" was
903 subsequently added.
904
1130bfb0
PH
905PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
906 when the result of a list match is failure because a DNS lookup failed.
907
ebcb507f
PH
908PH/40 RM_COMMAND is now used in the building process.
909
c35e155c
PH
910PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
911 the "build-* directories that it finds.
912
95d1f782
PH
913PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
914 address in a domain literal was a prefix of an interface address.
915
fd6de02e
PH
916PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
917 when verifying a sender address, unless rewrite_headers is false.
918
58de37c5
PH
919PH/44 Wrote a long comment about why errors_to addresses are verified as
920 recipients, not senders.
921
261cf466
TF
922TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
923 the ratelimit ACL was added.
924
3ee512ff
PH
925PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
926
e08c430f
PH
927PH/46 Added extra information about PostgreSQL errors to the error string.
928
bef5a11f
PH
929PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
930 avoiding the need to install special zones in a real server. This is
931 backwards compatible; if it can't find the fake resolver, it drops back.
932 Thus, both old and new test suites can be run.
933
7546de58
TF
934TF/02 Added util/ratelimit.pl
935
e5d5a95f
TF
936TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
937 clock is set back in time.
938
2e88a017
TF
939TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
940 Candler <B.Candler@pobox.com>.
941
a5f65aa4
TF
942TF/05 The fix for PH/43 was not completely correct; widen_domains is always
943 OK for addresses that are the result of redirections.
944
e7726cbf
PH
945PH/48 A number of further additions for the benefit of the new test suite,
946 including a fake gethostbyname() that interfaces to the fake DNS resolver
947 (see PH/47 above).
948
a7fdad5b
TF
949TF/06 The fix for widen_domains has also been applied to qualify_single and
950 search_parents which are the other dnslookup options that can cause
951 header rewrites.
952
6af56900
PH
953PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
954 type ("H").
955
0925ede6
PH
956PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
957
66afa403
TF
958TF/07 Exim produced the error message "an SRV record indicated no SMTP
959 service" if it encountered an MX record with an empty target hostname.
960 The message is now "an MX or SRV record indicated no SMTP service".
961
0154e85a
TF
962TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
963 if the DNS of the sending site is misconfigured. This is quite a
964 common situation. This change restores the behaviour of treating a
965 helo verification defer as a failure.
966
16f12c76
PH
967PH/51 If self=fail was set on a router, the bounce message did not include the
968 actual error message.
969
bbe902f0 970
e5a9dba6
PH
971Exim version 4.52
972-----------------
973
974TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
975
22c3b60b
PH
976PH/01 When a transport filter timed out in a pipe delivery, and the pipe
977 command itself ended in error, the underlying message about the transport
978 filter timeout was being overwritten with the pipe command error. Now the
979 underlying error message should be appended to the second error message.
980
06a9b4b5
PH
981TK/01 Fix poll() being unavailable on Mac OSX 10.2.
982
c1ac6996
PH
983PH/02 Reduce the amount of output that "make" produces by default. Full output
984 can still be requested.
985
9c7a242c
PH
986PH/03 The warning log line about a condition test deferring for a "warn" verb
987 was being output only once per connection, rather than after each
988 occurrence (because it was using the same function as for successful
989 "warn" verbs). This seems wrong, so I have changed it.
990
87ba3f5f
PH
991TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
992 it should not have, which might have caused a crash in the right
993 circumstances, but probably never did.
994
995PH/04 Installed a modified version of Tony Finch's patch to make submission
996 mode fix the return path as well as the Sender: header line, and to
997 add a /name= option so that you can make the user's friendly name appear
998 in the header line.
999
29aba418
TF
1000TF/03 Added the control = fakedefer ACL modifier.
1001
fe0dab11
TF
1002TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1003 Mark Lowes for thorough testing.
870f6ba8 1004
11d337a4
TK
1005TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1006
1007TK/03 Merged latest SRS patch from Miles Wilton.
1008
415c8f3b
PH
1009PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1010 with the definition in sysexits.h (which is #included earlier).
1011 Fortunately, Exim does not actually use EX_OK. The code used to try to
1012 preserve the sysexits.h value, by assumimg that macro definitions were
1013 scanned for macro replacements. I have been disabused of this notion,
1014 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1015
958541e9
PH
1016PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1017 in the smtp transport. When a block could not be written in a single
1018 write() function, the timeout was being re-applied to each part-write.
1019 This seems wrong - if the receiver was accepting one byte at a time it
1020 would take for ever. The timeout is now adjusted when this happens. It
1021 doesn't have to be particularly precise.
1022
c206415f
TK
1023TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1024 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1025
2a4be8f9
PH
1026PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1027 without a domain if the check to <postmaster@domain> fails.
1028
1cba11c5
SC
1029SC/01 Eximstats: added -xls and the ability to specify output files
1030 (patch written by Frank Heydlauf).
1031
1032SC/02 Eximstats: use FileHandles for outputing results.
1033
1034SC/03 Eximstats: allow any combination of xls, txt, and html output.
1035
1036SC/04 Eximstats: fixed display of large numbers with -nvr option
1037
1038SC/05 Eximstats: fixed merging of reports with empty tables.
1039
1040SC/06 Eximstats: added the -include_original_destination flag
1041
1042SC/07 Eximstats: removed tabs and trailing whitespace.
1043
1005d00e
TK
1044TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1045
1046TK/06 MBOX spool code: Add real "From " MBOX separator line
1047 so the .eml file is really in mbox format (even though
1048 most programs do not really care). Patch from Alex Miller.
1049
1050TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1051 The latter is generated from $received_to and is only set if the
1052 message has one envelope recipient. SA can use these headers,
1053 obviously out-of-the-box. Patch from Alex Miller.
1054
9b4768fa
PH
1055PH/08 The ${def test on a variable was returning false if the variable's
1056 value was "0", contrary to what the specification has always said!
1057 The result should be true unless the variable is empty.
1058
1059PH/09 The syntax error of a character other than { following "${if
1060 def:variable_name" (after optional whitespace) was not being diagnosed.
1061 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1062 accidental colon was present, for example, could give incorrect results.
1063
0d7eb84a
PH
1064PH/10 Tidied the code in a number of places where the st_size field of a stat()
1065 result is used (not including appendfile, where other changes are about
1066 to be made).
1067
1068PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1069 This involved changing a lot of size variables from int to off_t. It
1070 should work with maildirs and everything.
1071
40727bee
TK
1072TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1073 spamd dying while we are connected to it.
1074
554d2369
TF
1075TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1076 <jgh@wizmail.org>
1077
1f922db1
PH
1078PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1079 function for BDB 4.3.
1080
ef213c3b
PH
1081PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1082
8ac170f3
PH
1083PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1084 the sources for PCRE have been re-arranged and more files are now
1085 involved.
1086
b1c749bb
PH
1087PH/15 The code I had for printing potentially long long variables in PH/11
1088 above was not the best (it lost precision). The length of off_t variables
1089 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1090 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1091 to be "long long int" or "long int". This is needed for the internal
1092 formatting function string_vformat().
b1c749bb 1093
4aac9b49
PH
1094PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1095 the configuration file to be ":syslog", then the script "guesses" where
1096 the logs files are, rather than using the compiled in default. In our
1097 case the guess is not the same as the compiled default, so the script
1098 suddenly stopped working when I started to use syslog. The patch checks
1099 to see if log_file_path is "". If so, it attempts to read it from exim
1100 with no configuration file to get the compiled in version, before it
1101 falls back to the previous guessing code."
1102
294520c8
TK
1103TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1104 implementing BATV in an Exim configuration. See NewStuff for the gory
1105 details.
1106
5bd022fe
PH
1107PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1108 Makefile that are specific to HP-UX.
1109
90e9ce59
PH
1110PH/18 If the "use_postmaster" option was set for a recipient callout together
1111 with the "random" option, the postmaster address was used as the MAIL
1112 FROM address for the random test, but not for the subsequent recipient
1113 test. It is now used for both.
1114
5ea81592
PH
1115PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1116 patch removes a few documentation additions to RFC 3028, because the
1117 latest draft now contains them. It adds the new en;ascii-case comparator
1118 and a new error check for 8bit text in MIME parts. Comparator and
1119 require names are now matched exactly. I enabled the subaddress
1120 extension, but it is not well tested yet (read: it works for me)."
1121
c6c2dc1d
PH
1122PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1123 rework some of the code of TK/09 above to avoid the hardwired use of
1124 "%lld" and "long long". Replaced the call to snprintf() with a call to
1125 string_vformat().
1126
fffffe4c
PH
1127PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1128 records point to non-existent hosts", "retry timeout exceeded", and
1129 "retry time not reached for any host after a long failure period".
ca02eafb 1130
9a26b6b2
PH
1131PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1132 experimental DomainKeys support:
1133
1134 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1135 (2) On an error such as an illegally used "control", the wrong name for
1136 the control was given.
1137
1138 These problems did NOT occur unless DomainKeys support was compiled.
1139
4aee0225
PH
1140PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1141
32d668a5
PH
1142PH/24 Added ${if match_ip condition.
1143
8187c3f3
PH
1144PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1145 databases so that it will be absolutely obvious if a crash occurs in the
1146 DB library. This is a regular occurrence (often caused by mis-matched
1147 db.h files).
1148
ff790e47 1149PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1150 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1151 picked up on a user's system that detects such things. There doesn't seem
1152 to be a gcc warning option for this - only an attribute that has to be
1153 put on the function's prototype. It seems that in Fedora Core 4 they have
1154 set this on a number of new functions. No doubt there will be more in due
1155 course.
ff790e47 1156
5417f6d1
PH
1157PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1158 specify a transport. However, if an address that was verified by such a
1159 router was the subject of a callout, Exim crashed because it tried to
1160 read the rcpt_include_affixes from the non-existent transport. Now it
1161 just assumes that the setting of that option is false. This bug was
1162 introduced by 4.51/PH/31.
1163
59cf8544
PH
1164PH/28 Changed -d+all to exclude +memory, because that information is very
1165 rarely of interest, but it makes the output a lot bigger. People tend to
1166 do -d+all out of habit.
1167
e7ad8a65
PH
1168PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1169 code in os-type was giving problems when libc.so lives in lib64, like on
1170 x86_64 Fedora Core.
1171
ade42478
PH
1172PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1173 aren't the modern standard, and it seems that some systems' include files
1174 don't always have them. Exim was already checking for some of the newer
1175 ones like T_AAAA, and defining it itself. I've added checks for all the
1176 record types that Exim uses.
1177
182ad5cf
PH
1178PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1179 not automatically generating a new one, as it is supposed to. This
1180 prevented TLS from working. If the file did exist, but contained invalid
1181 data, a new version was generated, as expected. It was only the case of a
1182 non-existent file that was broken.
1183
b0d9fc80
TK
1184TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1185 with a change in libdomainkeys > 0.64.
1186
1187TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1188 from DNS. If the selector record carries the flag, it now has
1189 precedence over the domain-wide flag.
1190
1191TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1192
47c7a64a
PH
1193PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1194 the use of a port name that isn't defined in /etc/services) occurred, the
1195 message was deferred as in a normal delivery, and thus remained on the
1196 spool, instead of being failed because of the mua_wrapper setting. This
1197 is now fixed, and I tidied up some of the mua_wrapper messages at the
1198 same time.
1199
a388bce4
SC
1200SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1201 the messages in a hash of arrays rather than using individual hashes.
1202 This is a bit cleaner and results in dramatic memory savings, albeit
1203 at a slight CPU cost.
1204
1205SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1206 as requested by Marc Sherman.
1207
1208SC/10 Eximstats: added histograms for user specified patterns as requested
1209 by Marc Sherman.
1210
0793e4ed
SC
1211SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1212
c58b88df
PH
1213PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1214 fopen() in the content-scanning modules that did not already have it.
1215
e7ad8a65 1216
7982096b
PH
1217Exim version 4.51
1218-----------------
1219
1a46a8c5
PH
1220TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1221 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1222
2f079f46 1223TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1224
1225TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1226
1227PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1228 to test Sieve filters that use "vacation".
1229
1230PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1231 that changes the way the GnuTLS parameters are stored in the cache file.
1232 The new format can be generated externally. For backward compatibility,
1233 if the data in the cache doesn't make sense, Exim assumes it has read an
1234 old-format file, and it generates new data and writes a new file. This
1235 means that you can't go back to an older release without removing the
1236 file.
1237
1238PH/03 A redirect router that has both "unseen" and "one_time" set does not
1239 work if there are any delivery delays because "one_time" forces the
1240 parent to be marked "delivered", so its unseen clone is never tried
1241 again. For this reason, Exim now forbids the simultaneous setting of
1242 these two options.
1243
1244PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1245 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1246 entry if you want to know the details. The fix, however, neglected to
1247 consider the case when local delivery batching is involved. The test for
1248 "previously delivered" was not happening when checking to see if an
1249 address could be batched with a previous (undelivered) one; under
1250 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1251 address.
1a46a8c5
PH
1252
1253PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1254 in its include files, and this causes problems building Exim.
1255
1256PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1257 header_syntax) but Exim was just ignoring anything given after a slash.
1258 In particular, this caused confusion with an attempt to use "verify =
1259 reverse_host_lookup/defer_ok". An error is now given when options are
1260 supplied for verify items that do not have them. (Maybe reverse_host_
1261 lookup should have a defer_ok option, but that's a different point.)
1262
1263PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1264 defined by RFC 821) to 2048, because there were problems with some AUTH
1265 commands, and RFC 1869 says the size should be increased for extended
1266 SMTP commands that take arguments.
1267
1268PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1269 Finch).
1270
1271PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1272 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1273
49c2d5ea
PH
1274PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1275 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1276 whatever). Otherwise the password may appear in the log. Following change
1277 PH/42 below, there is no longer a chance of it appearing in a bounce
1278 message.
49c2d5ea 1279
bf759a8b
PH
1280PH/11 Installed exipick version 20050225.0 from John Jetmore.
1281
83364d30
PH
1282PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1283 of its addresses was ever tried. (Bugzilla bug #2.)
1284
7999bbd7
PH
1285PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1286 the result incorrectly in the debug output. (It correctly added a newline
1287 to what was transported.)
1288
7dbf77c9
PH
1289TF/01 Added $received_time.
1290
74e0617f
PH
1291PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1292 commented out examples of how to interface to a virus scanner and to
1293 SpamAssassin. Also added commented examples of av_scanner and
1294 spamd_address settings.
1295
2f079f46
PH
1296PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1297 and controls are allowed in which ACLs. There were a couple of minor
1298 errors. Some of the entries in the conditions table (which is a table of
1299 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1300 negation of where the condition IS allowed.
1301
8c841523
PH
1302PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1303
7766a4f0
PH
1304PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1305 header file does not have a version number, so I've had to invent a new
1306 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1307 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1308 radiusclient), but it was contributed by a Radius user.
1309
8b417f2c
PH
1310PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1311 files or directories, for OpenSSL.
1312
901f42cb
PH
1313PH/19 When an Exim process that is running as root has to create an Exim log
1314 file, it does so in a subprocess that runs as exim:exim so as to get the
1315 ownership right at creation (otherwise, other Exim processes might see
1316 the file with the wrong ownership). There was no test for failure of this
1317 fork() call, which would lead to the process getting stuck as it waited
1318 for a non-existent subprocess. Forks do occasionally fail when resources
1319 run out. I reviewed all the other calls to fork(); they all seem to check
1320 for failure.
1321
f9b9210e
PH
1322PH/20 When checking for unexpected SMTP input at connect time (before writing
1323 the banner), Exim was not dealing correctly with a non-positive return
1324 from the read() function. If the client had disconnected by this time,
1325 the result was a log entry for a synchronization error with an empty
1326 string after "input=" when read() returned zero. If read() returned -1
1327 (an event I could not check), uninitialized data bytes were printed.
1328 There were reports of junk text (parts of files, etc) appearing after
1329 "input=".
1330
54cdb463
PH
1331PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1332
cf00dad6
PH
1333PH/22 Added support for macro redefinition, and (re)definition in between
1334 driver and ACL definitions.
1335
acb1b346
PH
1336PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1337 forgetting to use the resulting value; it was using the unexpanded value.
1338
c5ddb310
PH
1339PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1340 hadn't been configured. The fix is from Juergen Kreileder, who
1341 understands it better than I do:
1342
1343 "Here's what I see happening with three configured cyrus_sasl
1344 authenticators configured (plain, login, cram-md5):
1345
1346 On startup auth_cyrus_sasl_init() gets called for each of these.
1347 This means three calls to sasl_listmech() without a specified mech_list.
1348 => SASL tests which mechs of all available mechs actually work
1349 => three warnings about OTP not working
1350 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1351
1352 With the patch, sasl_listmech() also gets called three times. But now
1353 SASL's mech_list option is set to the server_mech specified in the the
1354 authenticator. Or in other words, the answer from sasl_listmech()
1355 gets limited to just the mech you're testing for (which is different
1356 for each call.)
1357 => the return list contains just 'plain' or 'login', 'cram-md5' or
1358 nothing depending on the value of ob->server_mech.
1359
1360 I've just tested the patch: Authentication still works fine,
1361 unavailable mechs specified in the exim configuration are still
1362 caught, and the auth.log warnings about OTP are gone."
1363
31619da6
PH
1364PH/25 When debugging is enabled, the contents of the command line are added
1365 to the debugging output, even when log_selector=+arguments is not
1366 specified.
1367
bebaf0fc
PH
1368PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1369 answer is "GNU", and only if the return is "GNU/something" is the answer
1370 "Linux".
1371
475fe28a
PH
1372PH/27 $acl_verify_message is now set immediately after the failure of a
1373 verification in an ACL, and so is available in subsequent modifiers. In
1374 particular, the message can be preserved by coding like this:
1375
1376 warn !verify = sender
1377 set acl_m0 = $acl_verify_message
1378
1379 Previously, $acl_verify_message was set only while expanding "message"
1380 and "log_message" when a very denied access.
1381
7e8bec7a
PH
1382PH/28 Modified OS/os.c-Linux with
1383
1384 -#ifndef OS_LOAD_AVERAGE
1385 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1386
1387 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1388 nomenclature these days.)
1389
e4a89c47
PH
1390PH/29 Installed patch from the Sieve maintainer that adds the options
1391 sieve_useraddress and sieve_subaddress to the redirect router.
1392
5ca2a9a1
PH
1393PH/30 In these circumstances:
1394 . Two addresses routed to the same list of hosts;
1395 . First host does not offer TLS;
1396 . First host accepts first address;
1397 . First host gives temporary error to second address;
1398 . Second host offers TLS and a TLS session is established;
1399 . Second host accepts second address.
1400 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1401 and peerdn, if requested) that were in fact used only for the second
1402 address.
7e8bec7a 1403
c688b954
PH
1404PH/31 When doing a callout as part of verifying an address, Exim was not paying
1405 attention to any local part prefix or suffix that was matched by the
1406 router that accepted the address. It now behaves in the same way as it
1407 does for delivery: the affixes are removed from the local part unless
1408 rcpt_include_affixes is set on the transport.
1409
fed77020
PH
1410PH/32 Add the sender address, as F=<...>, to the log line when logging a
1411 timeout during the DATA phase of an incoming message.
1412
7fe1560f
PH
1413PH/33 Sieve envelope tests were broken for match types other than :is. I have
1414 applied a patch sanctioned by the Sieve maintainer.
c688b954 1415
ebb6e6d5
PH
1416PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1417 the uid or gid is negative. A case of a negative gid caused this to be
1418 noticed. The fix allows for either to be negative.
1419
9c4e8f60
PH
1420PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1421 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1422 overlooked.
1423
1424PH/36 The change PH/12 above was broken. Fixed it.
1425
d7174846
PH
1426PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1427 the grounds that routing the same address twice would always produce the
1428 same answer. This might have been true once, but it is certainly no
1429 longer true now. Routing a child address may depend on the previous
1430 routing that produced that child. Some complicated redirection strategies
1431 went wrong when messages had multiple recipients, and made Exim's
1432 behaviour dependent on the order in which the addresses were given.
1433
1434 I have moved the duplicate checking until after the routing is complete.
1435 Exim scans the addresses that are assigned to local and remote
1436 transports, and removes any duplicates. This means that more work will be
1437 done, as duplicates will always all be routed, but duplicates are
1438 presumably rare, so I don't expect this is of any significance.
1439
1440 For deliveries to pipes, files, and autoreplies, the duplicate checking
1441 still happens during the routing process, since they are not going to be
1442 routed further.
1443
cfe75fc3
PH
1444PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1445 It corrects a timeout issue with spamd. This is Ian's comment: "The
1446 background is that sometimes spamd either never reads data from a
1447 connection it has accepted, or it never writes response data. The exiscan
1448 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1449 blindly assumes that writes won't block so it may never time out."
1450
be22d70e
PH
1451PH/39 Allow G after quota size as well as K and M.
1452
0612b098
PH
1453PH/40 The value set for $authenticated_id in an authenticator may not contain
1454 binary zeroes or newlines because the value is written to log lines and
1455 to spool files. There was no check on this. Now the value is run through
1456 the string_printing() function so that such characters are converted to
1457 printable escape sequences.
1458
2e0c1448
PH
1459PH/41 $message_linecount is a new variable that contains the total number of
1460 lines in the message. Compare $body_linecount, which is the count for the
1461 body only.
1462
447d236c
PH
1463PH/42 Exim no longer gives details of delivery errors for specific addresses in
1464 bounce and delay warning messages, except in certain special cases, which
1465 are as follows:
1466
1467 (a) An SMTP error message from a remote host;
1468 (b) A message specified in a :fail: redirection;
1469 (c) A message specified in a "fail" command in a system filter;
1470 (d) A message specified in a FAIL return from the queryprogram router;
1471 (e) A message specified by the cannot_route_message router option.
1472
1473 In these cases only, Exim does include the error details in bounce and
1474 warning messages. There are also a few cases where bland messages such
1475 as "unrouteable address" or "local delivery error" are given.
1476
d20976dc
PH
1477PH/43 $value is now also set for the "else" part of a ${run expansion.
1478
f656d135
PH
1479PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1480 being worked on, but at least Exim now implements the latest version to
1481 play with."
1482
2e2a30b4
PH
1483PH/45 In a pipe transport, although a timeout while waiting for the pipe
1484 process to complete was treated as a delivery failure, a timeout while
1485 writing the message to the pipe was logged, but erroneously treated as a
1486 successful delivery. Such timeouts include transport filter timeouts. For
1487 consistency with the overall process timeout, these timeouts are now
1488 treated as errors, giving rise to delivery failures by default. However,
1489 there is now a new Boolean option for the pipe transport called
1490 timeout_defer, which, if set TRUE, converts the failures into defers for
1491 both kinds of timeout. A transport filter timeout is now identified in
1492 the log output.
1493
9176e9f0
PH
1494PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1495 systems where "make" and "gmake" are different, calling "gmake" at top
1496 level broke things. I've arranged for the value of $(MAKE) to be passed
1497 from the Makefile to this script so that it can call the same version of
1498 "make".
1499
7982096b 1500
bbe902f0
PH
1501A note about Exim versions 4.44 and 4.50
1502----------------------------------------
1503
1504Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1505changes of various kinds. As a consequence, a big documentation update was
1506needed. This delayed the release for rather longer than seemed good, especially
1507in the light of a couple of (minor) security issues. Therefore, the changes
1508that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1509release. So 4.44 and 4.50 are in effect two different branches that both start
1510from 4.43.
1511
1512I have left the 4.50 change log unchanged; it contains all the changes since
15134.43. The change log for 4.44 is below; many of its items are identical to
1514those for 4.50. This seems to be the most sensible way to preserve the
1515historical information.
1516
1517
f7b63901 1518Exim version 4.50
495ae4b0
PH
1519-----------------
1520
5fe762f6
PH
1521 1. Minor wording change to the doc/README.SIEVE file.
1522
139059f6 1523 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1524 computation of the current number of files was incorrect.
495ae4b0 1525
7086e875
PH
1526 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1527 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1528 place.
1529
35af9f61
PH
1530 4. Give more explanation in the error message when the command for a transport
1531 filter fails to execute.
1532
b668c215
PH
1533 5. There are several places where Exim runs a non-Exim command in a
1534 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1535 was being done only for the command run by the queryprogram router. It is
1536 now done for all such subprocesses. The other cases are: ${run, transport
1537 filters, and the commands run by the lmtp and pipe transports.
1538
a494b1e1
PH
1539 6. Added CONFIGURE_GROUP build-time option.
1540
1541 7. Some older OS have a limit of 256 on the maximum number of file
1542 descriptors. Exim was using setrlimit() to set 1000 as a large value
1543 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1544 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1545
c5fcb476
PH
1546 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1547 was an oversight, and furthermore, ever since the addition of extra
1548 controls (e.g. 4.43/32), the checks on when to allow different forms of
1549 "control" were broken. There should now be diagnostics for all cases when a
1550 control that does not make sense is encountered.
1551
69358f02
PH
1552 9. Added the /retain_sender option to "control=submission".
1553
5be20824
PH
155410. $recipients is now available in the predata ACL (oversight).
1555
eb2c0248
PH
155611. Tidy the search cache before the fork to do a delivery from a message
1557 received from the command line. Otherwise the child will trigger a lookup
1558 failure and thereby defer the delivery if it tries to use (for example) a
1559 cached ldap connection that the parent has called unbind on.
1560
2a3eea10
PH
156112. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1562 of $address_data from the recipient verification was clobbered by the
1563 sender verification.
1564
156513. The value of address_data from a sender verification is now available in
1566 $sender_address_data in subsequent conditions in the ACL statement.
1567
23c7ff99
PH
156814. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1569
4deaf07d
PH
157015. Added a new option "connect=<time>" to callout options, to set a different
1571 connection timeout.
1572
926e1192
PH
157316. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1574 was its contents. (It was OK if the option was not defined at all.)
1575
650edc6f
PH
157617. A "Completed" log line is now written for messages that are removed from
1577 the spool by the -Mrm option.
1578
2c7db3f5
PH
157918. New variables $sender_verify_failure and $recipient_verify_failure contain
1580 information about exactly what failed.
1581
3d235903
PH
158219. Added -dd to debug only the daemon process.
1583
7c7ad977
PH
158420. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1585 handles timeouts, both on the server side and network timeouts. Renamed the
1586 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1587
981756db
PH
158821. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1589 It is now set to "smtps".
1590
d4eb88df
PH
159122. $host_address is now set to the target address during the checking of
1592 ignore_target_hosts.
1593
159423. When checking ignore_target_hosts for an ipliteral router, no host name was
1595 being passed; this would have caused $sender_host_name to have been used if
1596 matching the list had actually called for a host name (not very likely,
1597 since this list is usually IP addresses). A host name is now passed as
1598 "[x.x.x.x]".
1599
7d468ab8
PH
160024. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1601 code that specifies a non-restarting handler (typically sigaction() in
1602 modern systems) in an attempt to fix a rare and obscure crash bug.
1603
160425. Narrowed the window for a race in the daemon that could cause it to ignore
1605 SIGCHLD signals. This is not a major problem, because they are used only to
1606 wake it up if nothing else does.
1607
62c0818f
PH
160826. A malformed maildirsize file could cause Exim to calculate negative values
1609 for the mailbox size or file count. Odd effects could occur as a result.
1610 The maildirsize information is now recalculated if the size or filecount
1611 end up negative.
1612
26034054
PH
161327. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1614 support for a long time. Removed HAVE_SYS_VFS_H.
1615
af66f652
PH
161628. Installed the latest version of exipick from John Jetmore.
1617
90af77f4
PH
161829. In an address list, if the pattern was not a regular expression, an empty
1619 subject address (from a bounce message) matched only if the pattern was an
1620 empty string. Non-empty patterns were not even tested. This was the wrong
1621 because it is perfectly reasonable to use an empty address as part of a
1622 database query. An empty address is now tested by patterns that are
1623 lookups. However, all the other forms of pattern expect the subject to
1624 contain a local part and a domain, and therefore, for them, an empty
1625 address still always fails if the pattern is not itself empty.
1626
d8ef3577
PH
162730. Exim went into a mad DNS loop when attempting to do a callout where the
1628 host was specified on an smtp transport, and looking it up yielded more
1629 than one IP address.
1630
5cb8cbc6
PH
163131. Re-factored the code for checking spool and log partition space into a
1632 function that finds that data and another that does the check. The former
1633 is then used to implement four new variables: $spool_space, $log_space,
1634 $spool_inodes, and $log_inodes.
1635
14702f5b
PH
163632. The RFC2047 encoding function was originally intended for short strings
1637 such as real names; it was not keeping to the 75-character limit for
1638 encoded words that the RFC imposes. It now respects the limit, and
1639 generates multiple encoded words if necessary. To be on the safe side, I
1640 have increased the buffer size for the ${rfc2047: expansion operator from
1641 1024 to 2048 bytes.
1642
063b1e99
PH
164333. It is now permitted to omit both strings after an "if" condition; if the
1644 condition is true, the result is "true". As before, when the second string
1645 is omitted, a false condition yields an empty string. This makes it less
1646 cumbersome to write custom ACL and router conditions.
1647
652e1b65
PH
164834. Failure to deliver a bounce message always caused it to be frozen, even if
1649 there was an errors_to setting on the router. The errors_to setting is now
1650 respected.
1651
6f0c9a4f
PH
165235. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1653 canonical form (fully expanded) before being placed in
1654 $sender_host_address.
1655
33397d19
PH
165636. The table in the code that translates DNS record types into text (T_A to
1657 "A" for instance) was missing entries for NS and CNAME. It is just possible
1658 that this could have caused confusion if both these types were looked up
1659 for the same domain, because the text type is used as part of Exim's
1660 per-process caching. But the chance of anyone hitting this buglet seems
1661 very small.
1662
7bb56e1f
PH
166337. The dnsdb lookup has been extended in a number of ways.
1664
1665 (1) There is a new type, "zns", which walks up the domain tree until it
1666 finds some nameserver records. It should be used with care.
1667
ea3bc19b
PH
1668 (2) There is a new type, "mxh", which is like "mx" except that it returns
1669 just the host names, not the priorities.
1670
1671 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1672 looked up. The behaviour when one of the lookups defers can be
1673 controlled by a keyword.
7bb56e1f 1674
ea3bc19b 1675 (4) It is now possible to specify the separator character for use when
7bb56e1f 1676 multiple records are returned.
33397d19 1677
0bcb2a0e
PH
167838. The dnslists ACL condition has been extended: it is now possible to supply
1679 a list of IP addresses and/or domains to be looked up in a particular DNS
1680 domain.
1681
2ac0e484
PH
168239. Added log_selector=+queue_time_overall.
1683
4e1fde53
PH
168440. When running the queue in the test harness, wait just a tad after forking a
1685 delivery process, to get repeatability of debugging output.
1686
de365ded
PH
168741. Include certificate and key file names in error message when GnuTLS fails
1688 to set them up, because the GnuTLS error message doesn't include the name
1689 of the failing file when there is a problem reading it.
1690
f05da2e8
PH
169142. Allow both -bf and -bF in the same test run.
1692
d6453af2
PH
169343. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1694
f7b63901
PH
169544. The "Exiscan patch" is now merged into the mainline Exim source.
1696
169745. Sometimes the final signoff response after QUIT could fail to get
1698 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1699 < 0 before doing a fflush(). This bug looks as though it goes back to the
1700 introduction of TLS in release 3.20, but "sometimes" must have been rare
1701 because the tests only now provoked it.
1702
a444213a
PH
170346. Reset the locale to "C" after calling embedded Perl, in case it was changed
1704 (this can affect the format of dates).
1705
0ec020ea
PH
170647. exim_tidydb, when checking for the continued existence of a message for
1707 which it has found a message-specific retry record, was not finding
1708 messages that were in split spool directories. Consequently, it was
1709 deleting retry records that should have stayed in existence.
1710
b1206957
PH
171148. Steve fixed some bugs in eximstats.
1712
171349. The SPA authentication driver was not abandoning authentication and moving
1714 on to the next authenticator when an expansion was forced to fail,
1715 contradicting the general specification for all authenticators. Instead it
1716 was generating a temporary error. It now behaves as specified.
1717
26dd5a95
PH
171850. The default ordering of permitted cipher suites for GnuTLS was pessimal
1719 (the order specifies the preference for clients). The order is now AES256,
1720 AES128, 3DES, ARCFOUR128.
1721
343b2385
PH
172251. Small patch to Sieve code - explicitly set From: when generating an
1723 autoreply.
1724
1c5466b9
PH
172552. Exim crashed if a remote delivery caused a very long error message to be
1726 recorded - for instance if somebody sent an entire SpamAssassin report back
1727 as a large number of 550 error lines. This bug was coincidentally fixed by
1728 increasing the size of one of Exim's internal buffers (big_buffer) that
1729 happened as part of the Exiscan merge. However, to be on the safe side, I
1730 have made the code more robust (and fixed the comments that describe what
1731 is going on).
1732
55ee9ee3
PH
173353. Now that there can be additional text after "Completed" in log lines (if
1734 the queue_time_overall log selector is set), a one-byte patch to exigrep
1735 was needed to allow it to recognize "Completed" as not the last thing in
1736 the line.
1737
d38f8232
PH
173854. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1739 patch that reportedly fixes this has been added. I am not expert enough to
1740 create a test for it. This is what the patch creator wrote:
1741
1742 "I found a little strange behaviour of ldap code when working with
1743 Windows 2003 AD Domain, where users was placed in more than one
1744 Organization Units. When I tried to give exim partial DN, the exit code
1745 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1746 But simultaneously result of request was absolutely normal ldap result,
1747 so I produce this patch..."
1748
3295e65b
PH
1749 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1750 REFERENCE, so I have modified the code to exclude the patch when that macro
1751 is not defined.
1752
7102e136
PH
175355. Some experimental protocols are using DNS PTR records for new purposes. The
1754 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1755 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1756 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1757 CAN-2005-0021
7102e136 1758
3ca0ba97
PH
175956. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1760
c2bcbe20
PH
176157. Double the size of the debug message buffer (to 2048) so that more of very
1762 long debug lines gets shown.
1763
18ce445d
PH
176458. The exicyclog utility now does better if the number of log files to keep
1765 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1766
1f5b4c3d
PH
176759. Two changes related to the smtp_active_hostname option:
1768
1769 (1) $smtp_active_hostname is now available as a variable.
1770 (2) The default for smtp_banner uses $smtp_active_hostname instead
1771 of $primary_hostname.
1772
b975ba52
PH
177360. The host_aton() function is supposed to be passed a string that is known
1774 to be a valid IP address. However, in the case of IPv6 addresses, it was
1775 not checking this. This is a hostage to fortune. Exim now panics and dies
1776 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1777 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1778 components; fortuitously, this particular loophole had already been fixed
1779 by change 4.50/55 above.
1780
1781 If there are any other similar loopholes, the new check in host_aton()
1782 itself should stop them being exploited. The report I received stated that
1783 data on the command line could provoke the exploit when Exim was running as
1784 exim, but did not say which command line option was involved. All I could
1785 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1786 running as the user.
ea3a6f44 1787 CAN-2005-0021
85b87bc2
PH
1788
178961. There was a buffer overflow vulnerability in the SPA authentication code
1790 (which came originally from the Samba project). I have added a test to the
1791 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1792 CAN-2005-0022
b975ba52 1793
17ffcae7
PH
179462. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1795 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1796
d95f9fdb
PH
179763. The daemon start-up calls getloadavg() while still root for those OS that
1798 need the first call to be done as root, but it missed one case: when
1799 deliver_queue_load_max is set with deliver_drop_privilege. This is
1800 necessary for the benefit of the queue runner, because there is no re-exec
1801 when deliver_drop_privilege is set.
1802
86b8287f
PH
180364. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1804 This has been fixed.
1805
60dc5e56
PH
180665. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1807 was in use, was not putting the data itself into the right store pool;
1808 consequently, it could be overwritten for a subsequent message in the same
1809 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1810 the caching.)
1811
533244af
PH
181266. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1813
a5a28604
PH
181467. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1815 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1816 the function were treating the return as a boolean value, which happened to
1817 work because 0=false and not-0=true, but is not correct code.
1818
7e634d24
PH
181968. The host_aton() function was not handling scoped IPv6 addresses (those
1820 with, for example, "%eth0" on the end) correctly.
1821
3e11c26b
PH
182269. Fixed some compiler warnings in acl.c for the bitmaps specified with
1823 negated items (that is, ~something) in unsigned ints. Some compilers
1824 apparently mutter when there is no cast.
1825
6729cf78
PH
182670. If an address verification called from an ACL failed, and did not produce a
1827 user-specific message (i.e. there was only a "system" message), nothing was
1828 put in $acl_verify_message. In this situation, it now puts the system
1829 message there.
1830
00f00ca5
PH
183171. Change 4.23/11 added synchronization checking at the start of an SMTP
1832 session; change 4.31/43 added the unwanted input to the log line - except
1833 that it did not do this in the start of session case. It now does.
1834
c9bdd01c
PH
183572. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1836 This is wrong and can cause the other end to generate a synchronization
1837 error if it is another Exim or anything else that does the synchronization
1838 check. A QUIT command is no longer sent after a timeout.
1839
d43194df
PH
184073. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1841 during host lookups.
1842
fe5b5d0b
PH
184374. The defer_ok option of callout verification was not working if it was used
1844 when verifying addresses in header lines, that is, for this case:
1845
1846 verify = header_sender/callout=defer_ok
1847
76a2d7ba
PH
184875. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1849 those file descriptors could be used for SMTP connections. If anything
1850 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1851 could be sent to the SMTP client, causing chaos. The daemon now opens
1852 stdin, stdout, and stderr to /dev/null when it puts itself into the
1853 background.
1854
185576. Arrange for output from Perl's "warn" command to be written to Exim's main
1856 log by default. The user can override this with suitable Perl magic.
1857
04f7d5b9
PH
185877. The use of log_message on a "discard" ACL verb, which is supposed to add to
1859 the log message when discard triggers, was not working for the DATA ACL or
1860 for the non-SMTP ACL.
1861
bc60667e
PH
186278. Error message wording change in sieve.c.
1863
bb6e88ff
PH
186479. If smtp_accept_max_per_host was set, the number of connections could be
1865 restricted to fewer than expected, because the daemon was trying to set up
1866 a new connection before checking whether the processes handling previous
1867 connections had finished. The check for completed processes is now done
1868 earlier. On busy systems, this bug wouldn't be noticed because something
1869 else would have woken the daemon, and it would have reaped the completed
1870 process earlier.
1871
1e70f85b
PH
187280. If a message was submitted locally by a user whose login name contained one
1873 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1874 It caused a spool format error. I have fixed the spool reading code. A
1875 related problem was that the "from" clause in the Received: line became
1876 illegal because of the space(s). It is now covered by ${quote_local_part.
1877
187881. Included the latest eximstats from Steve (adds average sizes to HTML Top
1879 tables).
1880
4e01f9d6
PH
188182. Updated OS/Makefile-AIX as per message from Mike Meredith.
1882
1ee1cef2
PH
188383. Patch from Sieve maintainer to fix unterminated string problem in
1884 "vacation" handling.
1885
6e2b4ccc
PH
188684. Some minor changes to the Linux configuration files to help with other
1887 OS variants using glibc.
1888
8e669ac1
PH
188985. One more patch for Sieve to update vacation handling to latest spec.
1890
495ae4b0 1891
bbe902f0
PH
1892----------------------------------------------------
1893See the note above about the 4.44 and 4.50 releases.
1894----------------------------------------------------
1895
1896
1897Exim version 4.44
1898-----------------
1899
1900 1. Change 4.43/35 introduced a bug that caused file counts to be
1901 incorrectly computed when quota_filecount was set in an appendfile
1902 transport
1903
1904 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1905 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1906 place.
1907
1908 3. Give more explanation in the error message when the command for a transport
1909 filter fails to execute.
1910
1911 4. There are several places where Exim runs a non-Exim command in a
1912 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1913 was being done only for the command run by the queryprogram router. It is
1914 now done for all such subprocesses. The other cases are: ${run, transport
1915 filters, and the commands run by the lmtp and pipe transports.
1916
1917 5. Some older OS have a limit of 256 on the maximum number of file
1918 descriptors. Exim was using setrlimit() to set 1000 as a large value
1919 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1920 systems. I've change it so that if it can't get 1000, it tries for 256.
1921
1922 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1923 was an oversight, and furthermore, ever since the addition of extra
1924 controls (e.g. 4.43/32), the checks on when to allow different forms of
1925 "control" were broken. There should now be diagnostics for all cases when a
1926 control that does not make sense is encountered.
1927
1928 7. $recipients is now available in the predata ACL (oversight).
1929
1930 8. Tidy the search cache before the fork to do a delivery from a message
1931 received from the command line. Otherwise the child will trigger a lookup
1932 failure and thereby defer the delivery if it tries to use (for example) a
1933 cached ldap connection that the parent has called unbind on.
1934
1935 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1936 of $address_data from the recipient verification was clobbered by the
1937 sender verification.
1938
193910. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1940 was its contents. (It was OK if the option was not defined at all.)
1941
194211. A "Completed" log line is now written for messages that are removed from
1943 the spool by the -Mrm option.
1944
194512. $host_address is now set to the target address during the checking of
1946 ignore_target_hosts.
1947
194813. When checking ignore_target_hosts for an ipliteral router, no host name was
1949 being passed; this would have caused $sender_host_name to have been used if
1950 matching the list had actually called for a host name (not very likely,
1951 since this list is usually IP addresses). A host name is now passed as
1952 "[x.x.x.x]".
1953
195414. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1955 code that specifies a non-restarting handler (typically sigaction() in
1956 modern systems) in an attempt to fix a rare and obscure crash bug.
1957
195815. Narrowed the window for a race in the daemon that could cause it to ignore
1959 SIGCHLD signals. This is not a major problem, because they are used only to
1960 wake it up if nothing else does.
1961
196216. A malformed maildirsize file could cause Exim to calculate negative values
1963 for the mailbox size or file count. Odd effects could occur as a result.
1964 The maildirsize information is now recalculated if the size or filecount
1965 end up negative.
1966
196717. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1968 support for a long time. Removed HAVE_SYS_VFS_H.
1969
ea3a6f44 197018. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1971
197219. Allow an empty sender to be matched against a lookup in an address list.
1973 Previously the only cases considered were a regular expression, or an
1974 empty pattern.
1975
197620. Exim went into a mad DNS lookup loop when doing a callout where the
1977 host was specified on the transport, if the DNS lookup yielded more than
1978 one IP address.
1979
ea3a6f44
NM
198021. The RFC2047 encoding function was originally intended for short strings
1981 such as real names; it was not keeping to the 75-character limit for
1982 encoded words that the RFC imposes. It now respects the limit, and
1983 generates multiple encoded words if necessary. To be on the safe side, I
1984 have increased the buffer size for the ${rfc2047: expansion operator from
1985 1024 to 2048 bytes.
bbe902f0 1986
ea3a6f44
NM
198722. Failure to deliver a bounce message always caused it to be frozen, even if
1988 there was an errors_to setting on the router. The errors_to setting is now
1989 respected.
bbe902f0
PH
1990
199123. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1992 canonical form (fully expanded) before being placed in
1993 $sender_host_address.
1994
199524. Updated eximstats to version 1.33
1996
ea3a6f44
NM
199725. Include certificate and key file names in error message when GnuTLS fails
1998 to set them up, because the GnuTLS error message doesn't include the name
1999 of the failing file when there is a problem reading it.
bbe902f0
PH
2000
200126. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2002 As per change 25.
bbe902f0 2003
ea3a6f44
NM
200427. Reset the locale to "C" after calling embedded Perl, in case it was changed
2005 (this can affect the format of dates).
bbe902f0 2006
ea3a6f44
NM
200728. exim_tidydb, when checking for the continued existence of a message for
2008 which it has found a message-specific retry record, was not finding
2009 messages that were in split spool directories. Consequently, it was
2010 deleting retry records that should have stayed in existence.
bbe902f0
PH
2011
201229. eximstats updated to version 1.35
2013 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2014 1.35 - bugfix such that pie charts by volume are generated correctly
2015
ea3a6f44
NM
201630. The SPA authentication driver was not abandoning authentication and moving
2017 on to the next authenticator when an expansion was forced to fail,
2018 contradicting the general specification for all authenticators. Instead it
2019 was generating a temporary error. It now behaves as specified.
bbe902f0 2020
ea3a6f44
NM
202131. The default ordering of permitted cipher suites for GnuTLS was pessimal
2022 (the order specifies the preference for clients). The order is now AES256,
2023 AES128, 3DES, ARCFOUR128.
bbe902f0 2024
ea3a6f44
NM
202531. Small patch to Sieve code - explicitly set From: when generating an
2026 autoreply.
bbe902f0 2027
ea3a6f44
NM
202832. Exim crashed if a remote delivery caused a very long error message to be
2029 recorded - for instance if somebody sent an entire SpamAssassin report back
2030 as a large number of 550 error lines. This bug was coincidentally fixed by
2031 increasing the size of one of Exim's internal buffers (big_buffer) that
2032 happened as part of the Exiscan merge. However, to be on the safe side, I
2033 have made the code more robust (and fixed the comments that describe what
2034 is going on).
bbe902f0 2035
ea3a6f44
NM
203633. Some experimental protocols are using DNS PTR records for new purposes. The
2037 keys for these records are domain names, not reversed IP addresses. The
2038 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2039 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2040 CAN-2005-0021
2041
ea3a6f44
NM
204234. The host_aton() function is supposed to be passed a string that is known
2043 to be a valid IP address. However, in the case of IPv6 addresses, it was
2044 not checking this. This is a hostage to fortune. Exim now panics and dies
2045 if the condition is not met. A case was found where this could be provoked
2046 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2047 components; fortuitously, this particular loophole had already been fixed
2048 by change 4.50/55 or 4.44/33 above.
2049
2050 If there are any other similar loopholes, the new check in host_aton()
2051 itself should stop them being exploited. The report I received stated that
2052 data on the command line could provoke the exploit when Exim was running as
2053 exim, but did not say which command line option was involved. All I could
2054 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2055 running as the user.
bbe902f0
PH
2056 CAN-2005-0021
2057
ea3a6f44
NM
205835. There was a buffer overflow vulnerability in the SPA authentication code
2059 (which came originally from the Samba project). I have added a test to the
2060 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2061 CAN-2005-0022
2062
ea3a6f44
NM
206336. The daemon start-up calls getloadavg() while still root for those OS that
2064 need the first call to be done as root, but it missed one case: when
2065 deliver_queue_load_max is set with deliver_drop_privilege. This is
2066 necessary for the benefit of the queue runner, because there is no re-exec
2067 when deliver_drop_privilege is set.
bbe902f0 2068
ea3a6f44
NM
206937. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2070 was in use, was not putting the data itself into the right store pool;
2071 consequently, it could be overwritten for a subsequent message in the same
2072 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2073 the caching.)
bbe902f0 2074
ea3a6f44
NM
207538. Sometimes the final signoff response after QUIT could fail to get
2076 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2077 < 0 before doing a fflush(). This bug looks as though it goes back to the
2078 introduction of TLS in release 3.20, but "sometimes" must have been rare
2079 because the tests only now provoked it.
bbe902f0
PH
2080
2081
495ae4b0
PH
2082Exim version 4.43
2083-----------------
2084
2085 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2086 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2087 Now it returns an integer. A number of calls were still expecting a T/F
2088 return. Fortuitously, in all cases, the tests worked in OK situations,
2089 which is the norm. However, things would have gone wrong on any write
2090 failures on the smtp file descriptor. This function is used when sending
2091 messages over SMTP and also when doing verify callouts.
2092
2093 2. When Exim is called to do synchronous delivery of a locally submitted
2094 message (the -odf or -odi options), it no longer closes stderr before doing
2095 the delivery.
2096
2097 3. Implemented the mua_wrapper option.
2098
2099 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2100
2101 5. Implemented the functions header_remove(), header_testname(),
2102 header_add_at_position(), and receive_remove_recipient(), and exported them
2103 to local_scan().
2104
2105 6. If an ACL "warn" statement specified the addition of headers, Exim already
2106 inserted X-ACL-Warn: at the start if there was no header name. However, it
2107 was not making this test for the second and subsequent header lines if
2108 there were newlines in the string. This meant that an invalid header could
2109 be inserted if Exim was badly configured.
2110
2111 7. Allow an ACL "warn" statement to add header lines at the start or after all
2112 the Received: headers, as well as at the end.
2113
2114 8. Added the rcpt_4xx retry error code.
2115
2116 9. Added postmaster_mailfrom=xxx to callout verification option.
2117
211810. Added mailfrom=xxxx to the callout verification option, for verify=
2119 header_sender only.
2120
212111. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2122 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2123
212412. Inserted some casts to stop certain compilers warning when using pointer
2125 differences as field lengths or precisions in printf-type calls (mostly
2126 affecting debugging statements).
2127
212813. Added optional readline() support for -be (dynamically loaded).
2129
213014. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2131 same clock tick as a message's arrival, so that its received time was the
2132 same as the "first fail" time on the retry record, and that message
2133 remained on the queue past the ultimate address timeout, every queue runner
2134 would try a delivery (because it was past the ultimate address timeout) but
2135 after another failure, the ultimate address timeout, which should have then
2136 bounced the address, did not kick in. This was a "< instead of <=" error;
2137 in most cases the first failure would have been in the next clock tick
2138 after the received time, and all would be well.
2139
214015. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2141 being recognized when the domain list was tested by the match_domain
2142 condition in an expansion string.
2143
214416. Added the ${str2b64: operator.
2145
214617. Exim was always calling setrlimit() to set a large limit for the number of
2147 processes, without checking whether the existing limit was already
2148 adequate. (It did check for the limit on file descriptors.) Furthermore,
2149 errors from getrlimit() and setrlimit() were being ignored. Now they are
2150 logged to the main and panic logs, but Exim does carry on, to try to do its
2151 job under whatever limits there are.
2152
215318. Imported PCRE 5.0.
2154
215519. Trivial typo in log message " temporarily refused connection" (the leading
2156 space).
2157
215820. If the log selector return_path_on_delivery was set and an address was
2159 redirected to /dev/null, the delivery process crashed because it assumed
2160 that a return path would always be set for a "successful" delivery. In this
2161 case, the whole delivery is bypassed as an optimization, and therefore no
2162 return path is set.
2163
216421. Internal re-arrangement: the function for sending a challenge and reading
2165 a response while authentication was assuming a zero-terminated challenge
2166 string. It's now changed to take a pointer and a length, to allow for
2167 binary data in such strings.
2168
216922. Added the cyrus_sasl authenticator (code supplied by MBM).
2170
217123. Exim was not respecting finduser_retries when seeking the login of the
2172 uid under which it was called; it was always trying 10 times. (The default
2173 setting of finduser_retries is zero.) Also, it was sleeping after the final
2174 failure, which is pointless.
2175
217624. Implemented tls_on_connect_ports.
2177
217825. Implemented acl_smtp_predata.
2179
218026. If the domain in control=submission is set empty, Exim assumes that the
2181 authenticated id is a complete email address when it generates From: or
2182 Sender: header lines.
2183
218427. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2185 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2186 chown and chgrp in /bin and hostname in /usr/bin.
2187
218828. Exim was keeping the "process log" file open after each use, just as it
2189 does for the main log. This opens the possibility of it remaining open for
2190 long periods when the USR1 signal hits a daemon. Occasional processlog
2191 errors were reported, that could have been caused by this. Anyway, it seems
2192 much more sensible not to leave this file open at all, so that is what now
2193 happens.
2194
219529. The long-running daemon process does not normally write to the log once it
2196 has entered its main loop, and it closes the log before doing so. This is
2197 so that log files can straightforwardly be renamed and moved. However,
2198 there are a couple of unusual error situations where the daemon does write
2199 log entries, and I had neglected to close the log afterwards.
2200
220130. The text of an SMTP error response that was received during a remote
2202 delivery was being truncated at 512 bytes. This is too short for some of
2203 the long messages that one sometimes sees. I've increased the limit to
2204 1024.
2205
220631. It is now possible to make retry rules that apply only when a message has a
2207 specific sender, in particular, an empty sender.
2208
220932. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2210 it possible to be selective about when SMTP synchronization is enforced.
2211
221233. Added "control = caseful_local_part" and "control = "caselower_local_part".
2213
221432. Implemented hosts_connection_nolog.
2215
221633. Added an ACL for QUIT.
2217
221834. Setting "delay_warning=" to disable warnings was not working; it gave a
2219 syntax error.
2220
222135. Added mailbox_size and mailbox_filecount to appendfile.
2222
222336. Added control = no_multiline_responses to ACLs.
2224
222537. There was a bug in the logic of the code that waits for the clock to tick
2226 in the case where the clock went backwards by a substantial amount such
2227 that the microsecond fraction of "now" was more than the microsecond
2228 fraction of "then" (but the whole seconds number was less).
2229
223038. Added support for the libradius Radius client library this is found on
2231 FreeBSD (previously only the radiusclient library was supported).
2232
2233
2234Exim version 4.42
2235-----------------
2236
2237 1. When certain lookups returned multiple values in the form name=value, the
2238 quoting of the values was not always being done properly. Specifically:
2239 (a) If the value started with a double quote, but contained no whitespace,
2240 it was not quoted.
2241 (b) If the value contained whitespace other than a space character (i.e.
2242 tabs or newlines or carriage returns) it was not quoted.
2243 This fix has been applied to the mysql and pgsql lookups by writing a
2244 separate quoting function and calling it from the lookup code. The fix
2245 should probably also be applied to nisplus, ibase and oracle lookups, but
2246 since I cannot test any of those, I have not disturbed their existing code.
2247
2248 2. A hit in the callout cache for a specific address caused a log line with no
2249 reason for rejecting RCPT. Now it says "Previous (cached) callout
2250 verification failure".
2251
2252 3. There was an off-by-one bug in the queryprogram router. An over-long
2253 return line was truncated at 256 instead of 255 characters, thereby
2254 overflowing its buffer with the terminating zero. As well as fixing this, I
2255 have increased the buffer size to 1024 (and made a note to document this).
2256
2257 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2258 when Exim is waiting for an SMTP response from a remote server, Exim
2259 restarts its select() call on the socket, thereby resetting its timeout.
2260 This is not a problem when such interrupts are rare. Somebody set up a cron
2261 job to run exiwhat every 2 minutes, which is less than the normal select()
2262 timeout (5 or 10 minutes). This meant that the select() timeout never
2263 kicked in because it was always reset. I have fixed this by comparing the
2264 time when an interrupt arrives with the time at the start of the first call
2265 to select(). If more time than the timeout has elapsed, the interrupt is
2266 treated as a timeout.
2267
2268 5. Some internal re-factoring in preparation for the addition of Sieve
2269 extensions (by MH). In particular, the "personal" test is moved to a
2270 separate function, and given an option for scanning Cc: and Bcc: (which is
2271 not set for Exim filters).
2272
2273 6. When Exim created an email address using the login of the caller as the
2274 local part (e.g. when creating a From: or Sender: header line), it was not
2275 quoting the local part when it contained special characters such as @.
2276
2277 7. Installed new OpenBSD configuration files.
2278
2279 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2280 try to make them clearer.
2281
2282 9. Callout options, other than the timeout value, were being ignored when
2283 verifying sender addresses in header lines. For example, when using
2284
2285 verify = header_sender/callout=no_cache
2286
2287 the cache was (incorrectly) being used.
2288
228910. Added a missing instance of ${EXE} to the exim_install script; this affects
2290 only the Cygwin environment.
2291
229211. When return_path_on_delivery was set as a log selector, if different remote
2293 addresses in the same message used different return paths and parallel
2294 remote delivery occurred, the wrong values would sometimes be logged.
2295 (Whenever a remote delivery process finished, the return path value from
2296 the most recently started remote delivery process was logged.)
2297
229812. RFC 3848 specifies standard names for the "with" phrase in Received: header
2299 lines when AUTH and/or TLS are in use. This is the "received protocol"
2300 field. Exim used to use "asmtp" for authenticated SMTP, without any
2301 indication (in the protocol name) for TLS use. Now it follows the RFC and
2302 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2303 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2304 names appear in log lines as well as in Received: header lines.
2305
230613. Installed MH's patches for Sieve to add the "copy" and "vacation"
2307 extensions, and comparison tests, and to fix some bugs.
2308
230914. Changes to the "personal" filter test:
2310
2311 (1) The test was buggy in that it was just doing the equivalent of
2312 "contains" tests on header lines. For example, if a user's address was
2313 anne@some.where, the "personal" test would incorrectly be true for
2314
2315 To: susanne@some.where
2316
2317 This test is now done by extracting each address from the header in turn,
2318 and checking the entire address. Other tests that are part of "personal"
2319 are now done using regular expressions (for example, to check local parts
2320 of addresses in From: header lines).
2321
2322 (2) The list of non-personal local parts in From: addresses has been
2323 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2324 taken from the Sieve specification recommendations.
2325
2326 (3) If the message contains any header line starting with "List-" it is
2327 treated as non-personal.
2328
2329 (4) The test for "circular" in the Subject: header line has been removed
2330 because it now seems ill-conceived.
2331
233215. Minor typos in src/EDITME comments corrected.
2333
233416. Installed latest exipick from John Jetmore.
2335
233617. If headers_add on a router specified a text string that was too long for
2337 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2338 of string_sprintf() is now avoided.
2339
234018. $message_body_size was not set (it was always zero) when running the DATA
2341 ACL and the local_scan() function.
2342
234319. For the "mail" command in an Exim filter, no default was being set for
2344 the once_repeat time, causing a random time value to be used if "once" was
2345 specified. (If the value happened to be <= 0, no repeat happened.) The
2346 default is now 0s, meaning "never repeat". The "vacation" command was OK
2347 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2348 (I found it when inspecting the code).
2349
235020. There is now an overall timeout for performing a callout verification. It
2351 defaults to 4 times the callout timeout, which applies to individual SMTP
2352 commands during the callout. The overall timeout applies when there is more
2353 than one host that can be tried. The timeout is checked before trying the
2354 next host. This prevents very long delays if there are a large number of
2355 hosts and all are timing out (e.g. when the network connections are timing
2356 out). The value of the overall timeout can be changed by specifying an
2357 additional sub-option for "callout", called "maxwait". For example:
2358
2359 verify = sender/callout=5s,maxwait=20s
2360
236121. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2362 to the end before writing, but this should make it even safer).
2363
236422. Exim was forgetting that it had advertised PIPELINING for the second and
2365 subsequent messages on an SMTP connection. It was also not resetting its
2366 memory on STARTTLS and an internal HELO.
2367
236823. When Exim logs an SMTP synchronization error within a session, it now
2369 records whether PIPELINING has been advertised or not.
2370
237124. Added 3 instances of "(long int)" casts to time_t variables that were being
2372 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2373 rather than long int.
2374
237525. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2376
237726. Added the never_mail option to autoreply.
2378
2379
2380Exim version 4.41
2381-----------------
2382
2383 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2384 crash if the getsockname() call failed; this can happen if a connection is
2385 closed very soon after it is established. The problem was simply in the
2386 order in which certain operations were done, causing Exim to try to write
2387 to the SMTP stream before it had set up the file descriptor. The bug has
2388 been fixed by making things happen in the correct order.
2389
2390
2391Exim version 4.40
2392-----------------
2393
2394 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2395 before the connection was closed, thus losing the rejection response.
2396
2397 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2398 some early Solaris releases, but causes trouble in current releases where
2399 socklen_t is defined.
2400
2401 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2402 always exist.
2403
2404 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2405 configured.
2406
2407 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2408 that releasing the top of it at the end releases what was used for sub-
2409 expansions (unless the block got too big). However, discard this block if
2410 the first thing is a variable or header, so that we can use its block when
2411 it is dynamic (useful for very large $message_headers, for example).
2412
2413 6. Lookups now cache *every* query, not just the most recent. A new, separate
2414 store pool is used for this. It can be recovered when all lookup caches are
2415 flushed. Lookups now release memory at the end of their result strings.
2416 This has involved some general refactoring of the lookup sources.
2417
2418 7. Some code has been added to the store_xxx() functions to reduce the amount
2419 of flapping under certain conditions.
2420
2421 8. log_incoming_interface used to affect only the <= reception log lines. Now
2422 it causes the local interface and port to be added to several more SMTP log
2423 lines, for example "SMTP connection from", and rejection lines.
2424
2425 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2426
242710. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2428
242911. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2430 could be overwritten at the end of the current message (or the start of a
2431 new message if it was set in a HELO ACL). The value is now preserved for
2432 the duration of the SMTP connection.
2433
243412. If a transport had a headers_rewrite setting, and a matching header line
2435 contained an unqualified address, that address was qualified, even if it
2436 did not match any rewriting rules. The underlying bug was that the values
2437 of the flags that permit the existence of unqualified sender and recipient
2438 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2439 non-local messages, and by -bnq for local messages) were not being
2440 preserved with the message after it was received.
2441
244213. When Exim was logging an SMTP synchronization error, it could sometimes log
2443 "next input=" as part of the text comprising the host identity instead of
2444 the correct text. The code was using the same buffer for two different
2445 strings. However, depending on which order the printing function evaluated
2446 its arguments, the bug did not always show up. Under Linux, for example, my
2447 test suite worked just fine.
2448
244914. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2450 doesn't work with some older versions of Perl. It has been changed to "my",
2451 which in any case is probably the better facility to use.
2452
245315. A really picky compiler found some instances of statements for creating
2454 error messages that either had too many or two few arguments for the format
2455 string.
2456
245716. The size of the buffer for calls to the DNS resolver has been increased
2458 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2459 for addresses that have a lot of PTR records. This alleviates a problem; it
2460 does not fully solve it.
2461
246217. A dnsdb lookup for PTR records that receives more data than will fit in the
2463 buffer now truncates the list and logs the incident, which is the same
2464 action as happens when Exim is looking up a host name and its aliases.
2465 Previously in this situation something unpredictable would happen;
2466 sometimes it was "internal error: store_reset failed".
2467
246818. If a server dropped the connection unexpectedly when an Exim client was
2469 using GnuTLS and trying to read a response, the client delivery process
2470 crashed while trying to generate an error log message.
2471
247219. If a "warn" verb in an ACL added multiple headers to a message in a single
2473 string, for example:
2474
2475 warn message = H1: something\nH2: something
2476
2477 the text was added as a single header line from Exim's point of view
2478 though it ended up OK in the delivered message. However, searching for the
2479 second and subsequent header lines using $h_h2: did not work. This has been
2480 fixed. Similarly, if a system filter added multiple headers in this way,
2481 the routers could not see them.
2482
248320. Expanded the error message when iplsearch is called with an invalid key to
2484 suggest using net-iplsearch in a host list.
2485
248621. When running tests using -bh, any delays imposed by "delay" modifiers in
2487 ACLs are no longer actually imposed (and a message to that effect is
2488 output).
2489
249022. If a "gecos" field in a passwd entry contained escaped characters, in
2491 particular, if it contained a \" sequence, Exim got it wrong when building
2492 a From: or a Sender: header from that name. A second bug also caused
2493 incorrect handling when an unquoted " was present following a character
2494 that needed quoting.
2495
249623. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2497 was not being matched caselessly.
2498
249924. Arranged for all hyphens in the exim.8 source to be escaped with
2500 backslashes.
2501
250225. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2503 properly. Recipient callout cache records were still being keyed to include
2504 the sender, even when use_sender was set false. This led to far more
2505 callouts that were necessary. The sender is no longer included in the key
2506 when use_sender is false.
2507
250826. Added "control = submission" modifier to ACLs.
2509
251027. Added the ${base62d: operator to decode base 62 numbers.
2511
251228. dnsdb lookups can now access SRV records.
2513
251429. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2515 the configuration file.
2516
251730. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2518 (-v) mode. This makes the output for a verbose queue run more intelligible.
2519
252031. Added a use_postmaster feature to recipient callouts.
2521
252232. Added the $body_zerocount variable, containing the number of binary zero
2523 bytes in the message body.
2524
252533. The time of last modification of the "new" subdirectory is now used as the
2526 "mailbox time last read" when there is a quota error for a maildir
2527 delivery.
2528
252934. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2530
253135. Added +ignore_unknown as a special item in host lists.
2532
253336. Code for decoding IPv6 addresses in host lists is now included, even if
2534 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2535 address was recognized as an IP address, but was then not correctly decoded
2536 into binary, causing unexpected and incorrect effects when compared with
2537 another IP address.
2538
2539
2540Exim version 4.34
2541-----------------
2542
2543 1. Very minor rewording of debugging text in manualroute to say "list of
2544 hosts" instead of "hostlist".
2545
2546 2. If verify=header_syntax was set, and a header line with an unqualified
2547 address (no domain) and a large number of spaces between the end of the
2548 name and the colon was received, the reception process suffered a buffer
2549 overflow, and (when I tested it) crashed. This was caused by some obsolete
2550 code that should have been removed. The fix is to remove it!
2551
2552 3. When running in the test harness, delay a bit after writing a bounce
2553 message to get a bit more predictability in the log output.
2554
2555 4. Added a call to search_tidyup() just before forking a reception process. In
2556 theory, someone could use a lookup in the expansion of smtp_accept_max_
2557 per_host which, without the tidyup, could leave open a database connection.
2558
2559 5. Added the variables $recipient_data and $sender_data which get set from a
2560 lookup success in an ACL "recipients" or "senders" condition, or a router
2561 "senders" option, similar to $domain_data and $local_part_data.
2562
2563 6. Moved the writing of debug_print from before to after the "senders" test
2564 for routers.
2565
2566 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2567 problems for message scanning, either using a data ACL, or using
2568 local_scan() because the Received: header was not generated till after they
2569 were called (in order to set the time as the time of reception completion).
2570 I have revised the way this works. The header is now generated after the
2571 body is received, but before the ACL or local_scan() are called. After they
2572 are run, the timestamp in the header is updated.
2573
2574
2575Exim version 4.33
2576-----------------
2577
2578 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2579 before starting a queue runner without re-exec. This happened only when
2580 deliver_drop_privilege was set or when the Exim user was set to root. The
2581 effect of the bug was that timeouts during subsequent deliveries caused
2582 crashes instead of being properly handled. The handler is now left at its
2583 default (and expected) setting.
2584
2585 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2586 message, again when deliver_drop_privilege is set or Exim is run as root.
2587 The bug described in (1) was not present in this case, but the tidying up
2588 of the other signals was missing. I have made the two cases consistent.
2589
2590 3. The ignore_target_hosts setting on a manualroute router was being ignored
2591 for hosts that were looked up using the /MX notation.
2592
2593 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2594 in domain lists.
2595
2596 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2597 operated on the sender address. After changing the $sender_address to <>
2598 for the sender address verify, Exim was re-instated it as the original
2599 (before rewriting) address, but remembering that it had rewritten it, so it
2600 wasn't rewriting it again. This bug also had the effect of breaking the
2601 sender address verification caching when the sender address was rewritten.
2602
2603 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2604 This has been changed so that if the ip literal address matches
2605 ignore_target_hosts, the router declines.
2606
2607 7. Added expansion conditions match_domain, match_address, and match_local_
2608 part (NOT match_host).
2609
2610 8. The placeholder for the Received: header didn't have a length field set.
2611
2612 9. Added code to Exim itself and to exim_lock to test for a specific race
2613 condition that could lead to file corruption when using MBX delivery. The
2614 issue is with the lockfile that is created in /tmp. If this file is removed
2615 after a process has opened it but before that process has acquired a lock,
2616 there is the potential for a second process to recreate the file and also
2617 acquire a lock. This could lead to two Exim processes writing to the file
2618 at the same time. The added code performs the same test as UW imapd; it
2619 checks after acquiring the lock that its file descriptor still refers to
2620 the same named file.
2621
262210. The buffer for building added header lines was of fixed size, 8192 bytes.
2623 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2624 when Exim is built.
2625
262611. Added the smtp_active_hostname option. If used, this will typically be made
2627 to depend on the incoming interface address. Because $interface_address is
2628 not set up until the daemon has forked a reception process, error responses
2629 that can happen earlier (such as "too many connections") no longer contain
2630 a host name.
2631
263212. If an expansion in a condition on a "warn" statement fails because a lookup
2633 defers, the "warn" statement is abandoned, and the next ACL statement is
2634 processed. Previously this caused the whole ACL to be aborted.
2635
263613. Added the iplsearch lookup type.
2637
263814. Added ident_timeout as a log selector.
2639
264015. Added tls_certificate_verified as a log selector.
2641
264216. Added a global option tls_require_ciphers (compare the smtp transport
2643 option of the same name). This controls incoming TLS connections.
2644
264517. I finally figured out how to make tls_require_ciphers do a similar thing
2646 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2647 before starting the TLS session.
2648
264918. Tabs are now shown as \t in -bP output.
2650
265119. If the log selector return_path_on_delivery was set, Exim crashed when
2652 bouncing a message because it had too many Received: header lines.
2653
265420. If two routers both had headers_remove settings, and the first one included
2655 a superfluous trailing colon, the final name in the first list and the
2656 first name in the second list were incorrectly joined into one item (with a
2657 colon in the middle).
2658
2659
2660Exim version 4.32
2661-----------------
2662
2663 1. Added -C and -D options to the exinext utility, mainly to make it easier
2664 to include in the automated testing, but these could be helpful when
2665 multiple configurations are in use.
2666
2667 2. The exinext utility was not formatting the output nicely when there was
2668 an alternate port involved in the retry record key, nor when there was a
2669 message id as well (for retries that were specific to a specific message
2670 and a specific host). It was also confused by IPv6 addresses, because of
2671 the additional colons they contain. I have fixed the IPv4 problem, and
2672 patched it up to do a reasonable job for IPv6.
2673
2674 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2675 delivery, the log line now contains "pipelined" if PIPELINING was used.
2676
2677 4. An SMTP transport process used to panic and die if the bind() call to set
2678 an explicit outgoing interface failed. This has been changed; it is now
2679 treated in the same way as a connect() failure.
2680
2681 5. A reference to $sender_host_name in the part of a conditional expansion
2682 that was being skipped was still causing a DNS lookup. This no longer
2683 occurs.
2684
2685 6. The def: expansion condition was not recognizing references to header lines
2686 that used bh_ and bheader_.
2687
2688 7. Added the _cache feature to named lists.
2689
2690 8. The code for checking quota_filecount in the appendfile transport was
2691 allowing one more file than it should have been.
2692
2693 9. For compatibility with Sendmail, the command line option
2694
2695 -prval:sval
2696
2697 is equivalent to
2698
2699 -oMr rval -oMs sval
2700
2701 and sets the incoming protocol and host name (for trusted callers). The
2702 host name and its colon can be omitted when only the protocol is to be set.
2703 Note the Exim already has two private options, -pd and -ps, that refer to
2704 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2705 "s", but I don't think that's a major issue.
2706
270710. A number of refactoring changes to the code, none of which should affect
2708 Exim's behaviour:
2709
2710 (a) The number of logging options was getting close to filling up the
2711 32-bit word that was used as a bit map. I have split them into two classes:
2712 those that are passed in the argument to log_write(), and those that are
2713 only ever tested independently outside of that function. These are now in
2714 separate 32-bit words, so there is plenty of room for expansion again.
2715 There is no change in the user interface or the logging behaviour.
2716
2717 (b) When building, for example, log lines, the code previously used a
2718 macro that called string_cat() twice, in order to add two strings. This is
2719 not really sufficiently general. Furthermore, there was one instance where
2720 it was actually wrong because one of the argument was used twice, and in
2721 one call a function was used. (As it happened, calling the function twice
2722 did not affect the overall behaviour.) The macro has been replaced by a
2723 function that can join an arbitrary number of extra strings onto a growing
2724 string.
2725
2726 (c) The code for expansion conditions now uses a table and a binary chop
2727 instead of a serial search (which was left over from when there were very
2728 few conditions). Also, it now recognizes conditions like "pam" even when
2729 the relevant support is not compiled in: a suitably worded error message is
2730 given if an attempt is made to use such a condition.
2731
273211. Added ${time_interval:xxxxx}.
2733
273412. A bug was causing one of the ddress fields not to be passed back correctly
2735 from remote delivery subprocesses. The field in question was not being
2736 subsequently used, so this caused to problems in practice.
2737
273813. Added new log selectors queue_time and deliver_time.
2739
274014. Might have fixed a bug in maildirsizefile handling that threw up
2741 "unexpected character" debug warnings, and recalculated the data
2742 unnecessarily. In any case, I expanded the warning message to give more
2743 information.
2744
274515. Added the message "Restricted characters in address" to the statements in
2746 the default ACL that block characters like @ and % in local parts.
2747
274816. Change 71 for release 4.31 proved to be much less benign that I imagined.
2749 Three changes have been made:
2750
2751 (a) There was a serious bug; a negative response to MAIL caused the whole
2752 recipient domain to be cached as invalid, thereby blocking all messages
2753 to all local parts at the same domain, from all senders. This bug has
2754 been fixed. The domain is no longer cached after a negative response to
2755 MAIL if the sender used is not empty.
2756
2757 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2758 been restored.
2759
2760 (c) A new callout option, "use_sender" has been added for people who want
2761 the modified behaviour.
2762
2763
2764Exim version 4.31
2765-----------------
2766
2767 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2768 Larry Rosenman.
2769
2770 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2771 indeed breaks things for older releases.
2772
2773 3. Added additional logging to the case where there is a problem reading data
2774 from a filter that is running in a subprocess using a pipe, in order to
2775 try to track down a specific problem.
2776
2777 4. Testing facility fudge: when running in the test harness and attempting
2778 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2779 getting "No route to host". Convert this to a timeout.
2780
2781 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2782 warning.
2783
2784 6. Some OS don't have socklen_t but use size_t instead. This affects the
2785 fifth argument of getsockopt() amongst other things. This is now
2786 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2787 can be set for individual OS. I have set it for SunOS5, OSF1, and
2788 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2789 some earlier ones do not.
2790
2791 7. Change 4.30/15 was not doing the test caselessly.
2792
2793 8. The standard form for an IPv6 address literal was being rejected by address
2794 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2795 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2796 this, as well as the form without the "IPv6" on the front (but only when
2797 address literals are enabled, of course).
2798
2799 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2800
280110. Exim crashed if a message with an empty sender address specified by -f
2802 encountered a router with an errors_to setting. This could be provoked only
2803 by a command such as
2804
2805 exim -f "" ...
2806
2807 where an empty string was supplied; "<>" did not hit this bug.
2808
280911. Installed PCRE release 4.5.
2810
281112. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2812 remained set. It is now erased.
2813
281413. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2815 times from message ids (which are base 36 rather than the normal 62).
2816
281714. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2818 were being counted as actual protocol errors, and logged if the log
2819 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2820 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2821 and DATA following a set of rejected RCPTs do not count as protocol errors.
2822 In other words, Exim assumes they were pipelined, though this may not
2823 actually be the case. Of course, in all cases the client gets an
2824 appropriate error code.
2825
282615. If a lookup fails in an ACL condition, a message about the failure may
2827 be available; it is used if testing the ACL cannot continue, because most
2828 such messages specify what the cause of the deferral is. However, some
2829 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2830 that caused an old message to be retained and used if a later statement
2831 caused a defer, replacing the real cause of the deferral.
2832
283316. If an IP address had so many PTR records that the DNS lookup buffer
2834 was not large enough to hold them, Exim could crash while trying to process
2835 the truncated data. It now detects and logs this case.
2836
283717. Further to 4.21/58, another change has been made: if (and only if) the
2838 first line of a message (the first header line) ends with CRLF, a bare LF
2839 in a subsequent header line has a space inserted after it, so as not to
2840 terminate the header.
2841
284218. Refactoring: tidied an ugly bit of code in appendfile that copied data
2843 unnecessarily, used atoi() instead of strtol(), and didn't check the
2844 termination when getting file sizes from file names by regex.
2845
284619. Completely re-implemented the support for maildirsize files, in the light
2847 of a number of problems with the previous contributed implementation
2848 (4.30/29). In particular:
2849
2850 . If the quota is zero, the maildirsize file is maintained, but no quota is
2851 imposed.
2852
2853 . If the maildir directory does not exist, it is created before any attempt
2854 to write a maildirsize file.
2855
2856 . The quota value in the file is just a cache; if the quota is changed in
2857 the transport, the new value overrides.
2858
2859 . A regular expression is available for excluding directories from the
2860 count.
2861
286220. The autoreply transport checks the characters in options that define the
2863 message's headers; it allows continued headers, but it was checking with
2864 isspace() after an embedded newline instead of explicitly looking for a
2865 space or a tab.
2866
286721. If all the "regular" hosts to which an address was routed had passed their
2868 expiry times, and had not reached their retry times, the address was
2869 bounced, even if fallback hosts were defined. Now Exim should go on to try
2870 the fallback hosts.
2871
287222. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2873 equivalent code in the SMTP transport. Some hosts send humungous responses
2874 to HELO/EHLO, more than 1024 it seems.
2875
287623. Refactoring: code in filter.c used (void *) for "any old type" but this
2877 gives compiler warnings in some environments. I've now done it "properly",
2878 using a union.
2879
288024. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2881 (because of problems with the built-in one) was declared to return uschar *
2882 instead of char *, causing compiler failure.
2883
288425. Fixed a file descriptor leak when processing alias/forward files.
2885
288626. Fixed a minor format string issue in dbfn.c.
2887
288827. Typo in exim.c: ("dmbnz" for "dbmnz").
2889
289028. If a filter file refered to $h_xxx or $message_headers, and the headers
2891 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2892 become corrupted.
2893
289429. When a sender address is verified, it is cached, to save repeating the test
2895 when there is more than one recipient in a message. However, when the
2896 verification involves a callout, it is possible for different callout
2897 options to be set for different recipients. It is too complicated to keep
2898 track of this in the cache, so now Exim always runs a verification when a
2899 callout is required, relying on the callout cache for the optimization.
2900 The overhead is duplication of the address routing, but this should not be
2901 too great.
2902
290330. Fixed a bug in callout caching. If a RCPT command caused the sender address
2904 to be verified with callout=postmaster, and the main callout worked but the
2905 postmaster check failed, the verification correctly failed. However, if a
2906 subsequent RCPT command asked for sender verification *without* the
2907 postmaster check, incorrect caching caused this verification also to fail,
2908 incorrectly.
2909
291031. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2911 it was not caching the DNS options (qualify_single, search_parents) that
2912 were used when the lookup failed. A subsequent lookup with different
2913 options therefore always gave the same answer, though there were cases
2914 where it should not have. (Example: a "domains = !$mx_any" option on a
2915 dnslookup router: the "domains" option is always processed without any
2916 widening, but the router might have qualify_single set.) Now Exim uses the
2917 cached value only when the same options are set.
2918
291932. Added John Jetmore's "exipick" utility to the distribution.
2920
292133. GnuTLS: When an attempt to start a TLS session fails for any reason other
2922 than a timeout (e.g. a certificate is required, and is not provided), an
2923 Exim server now closes the connection immediately. Previously it waited for
2924 the client to close - but if the client is SSL, it seems that they each
2925 wait for each other, leading to a delay before one of them times out.
2926
292734: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2928 maintained 0.8.x compatibility because I don't think many are using it, and
2929 it is clearly obsolete.
2930
293135. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2932 transport.
2933
293436. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2935 client certificate was expired. A simple patch fixes this, though I don't
2936 understand the full logic of why the verify callback is called multiple
2937 times.
2938
293937. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2940 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2941 which causes problems with some clients (such as the Certicom SSL Plus
2942 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2943 disables the coutermeasure allowing Eudora to connect."
2944
294538. Exim was not checking that a write() to a log file succeeded. This could
2946 lead to Bad Things if a log got too big, in particular if it hit a file
2947 size limit. Exim now panics and dies if it cannot write to a log file, just
2948 as it does if it cannot open a log file.
2949
295039. Modified OS/Makefile-Linux so that it now contains
2951
2952 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2953
2954 The two -D definitions ensure that Exim is compiled with large file
2955 support, which makes it possible to handle log files that are bigger than
2956 2^31.
2957
295840. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2959 instance) a domain was checked against a named list that involved a lookup,
2960 causing $domain_data to be set, then another domain was checked against the
2961 same list, then the first domain was re-checked, the value of $domain_data
2962 after the final check could be wrong. In particular, if the second check
2963 failed, it could be set empty. This bug probably also applied to
2964 $localpart_data.
2965
296641. The strip_trailing_dot option was not being applied to the address given
2967 with the -f command-line option.
2968
296942. The code for reading a message's header from the spool was incrementing
2970 $received_count, but never initializing it. This meant that the value was
2971 incorrect (doubled) while delivering a message in the same process in which
2972 it was received. In the most common configuration of Exim, this never
2973 happens - a fresh exec is done - but it can happen when
2974 deliver_drop_privilege is set.
2975
297643. When Exim logs an SMTP synchronization error - client data sent too soon -
2977 it now includes up to 150 characters of the unexpected data in the log
2978 line.
2979
298044. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2981 and building data strings. The size of both of these buffers was 10 000
2982 bytes - far larger than anybody would *ever* want, thought I. Needless to
2983 say, somebody hit the limit. I have increased the maximum line length to
2984 20 000 and the maximum data length of concatenated lines to 100 000. I have
2985 also fixed two bugs, because there was no checking on these buffers. Tsk,
2986 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2987 buffer is too small.
2988
298945. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2990 lsearch lookups. Now it does.
2991
299246. When parsing a route_list item in a manualroute router, a fixed-length
2993 buffer was used for the list of hosts. I made this 1024 bytes long,
2994 thinking that nobody would ever have a list of hosts that long. Wrong.
2995 Somebody had a whole pile of complicated expansion conditions, and the
2996 string was silently truncated, leading to an expansion error. It turns out
2997 that it is easier to change to an unlimited length (owing to other changes
2998 that have happened since this code was originally written) than to build
2999 structure for giving a limitation error. The length of the item that
3000 expands into the list of hosts is now unlimited.
3001
300247. The lsearch lookup could not handle data where the length of text line was
3003 more than 4095 characters. Such lines were truncated, leading to shortened
3004 data being returned. It should now handle lines of any length.
3005
300648. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3007 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3008 ACL").
3009
301049. Cosmetic tidy to scripts like exicyclog that are generated by globally
3011 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3012 no longer happens in comment lines. A list of replacements is now placed
3013 at the head of all of the source files, except those whose only change is
3014 to replace PERL_COMMAND in the very first #! line.
3015
301650. Replaced the slow insertion sort in queue.c, for sorting the list of
3017 messages on the queue, with a bottom-up merge sort, using code contributed
3018 by Michael Haardt. This should make operations like -bp somewhat faster on
3019 large queues. It won't affect queue runners, except when queue_run_in_order
3020 is set.
3021
302251. Installed eximstats 1.31 in the distribution.
3023
302452. Added support for SRV lookups to the dnslookup router.
3025
302653. If an ACL referred to $message_body or $message_body_end, the value was not
3027 reset for any messages that followed in the same SMTP session.
3028
302954. The store-handling optimization for building very long strings was not
3030 differentiating between the different store pools. I don't think this
3031 actually made any difference in practice, but I've tidied it.
3032
303355. While running the routers to verify a sender address, $sender_address
3034 was still set to the sender address. This is wrong, because when routing to
3035 send a bounce to the sender, it would be empty. Therefore, I have changed
3036 it so that, while verifying a sender address, $sender_address is set to <>.
3037 (There is no change to what happens when verifying a recipient address.)
3038
303956. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3040 target A or AAAA records (if not already returned) without resetting the
3041 qualify_single or search_parents options of the DNS resolver. These are
3042 inappropriate in this case because the targets of MX and SRV records must
3043 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3044 target that, when qualified, matched something in the local domain. These
3045 two options are now turned off when doing these lookups.
3046
304757. It seems that at least some releases of Reiserfs (which does not have the
3048 concept of a fixed number of inodes) returns zero and not -1 for the
3049 number of available inodes. This interacted badly with check_spool_inodes,
3050 which assumed that -1 was the "no such thing" setting. What I have done is
3051 to check that the total number of inodes is greater than zero before doing
3052 the test of how many are available.
3053
305458. When a "warn" ACL statement has a log_message modifier, the message is
3055 remembered, and not repeated. This is to avoid a lot of repetition when a
3056 message has many recipients that cause the same warning to be written.
3057 Howewer, Exim was preserving the list of already written lines for an
3058 entire SMTP session, which doesn't seem right. The memory is now reset if a
3059 new message is started.
3060
306159. The "rewrite" debugging flag was not showing the result of rewriting in the
3062 debugging output unless log_rewrite was also set.
3063
306460. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3065 of (int)(handle) when we know that handle contains (void *)(-1).
3066
306761. The Exim daemon panic-logs an error return when it closes the incoming
3068 connection. However "connection reset by peer" seems to be common, and
3069 isn't really an error worthy of noting specially, so that particular error
3070 is no long logged.
3071
307262. When Exim is trying to find all the local interfaces, it used to panic and
3073 die if the ioctl to get the interface flags failed. However, it seems that
3074 on at least one OS (Solaris 9) it is possible to have an interface that is
3075 included in the list of interfaces, but for which you get a failure error
3076 for this call. This happens when the interface is not "plumbed" into a
3077 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3078 failure of the "get flags" call assumes that the interface is down.
3079
308063. Added a ${eval10: operator, which assumes all numbers are decimal. This
3081 makes life easier for people who are doing arithmetic on fields extracted
3082 from dates, where you often get leading zeros that should not be
3083 interpreted as octal.
3084
308564. Added qualify_domain to the redirect router, to override the global
3086 setting.
3087
308865. If a pathologically long header line contained very many addresses (the
3089 report of this problem mentioned 10 000) and each of them was rewritten,
3090 Exim could use up a very large amount of memory. (It kept on making new
3091 copies of the header line as it rewrote, and never released the old ones.)
3092 At the expense of a bit more processing, the header rewriting function has
3093 been changed so that it no longer eats memory in this way.
3094
309566. The generation of the Received: header has been moved from the time that a
3096 message starts to be received, to the time that it finishes. The timestamp
3097 in the Received: header should now be very close to that of the <= log
3098 line. There are two side-effects of this change:
3099
3100 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3101 logged header lines no longer include the local Received: line, because
3102 it has not yet been created. The same applies to a copy of the message
3103 that is returned to a non-SMTP sender when a message is rejected.
3104
3105 (b) When a filter file is tested using -bf, no additional Received: header
3106 is added to the test message. After some thought, I decided that this
3107 is a bug fix.
3108
3109 This change does not affect the value of $received_for. It is still set
3110 after address rewriting, but before local_scan() is called.
3111
311267. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3113
311468. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3115 gave an unhelpful panic error message, and a defer error. I have managed to
3116 change this behaviour so that it now rejects any supplied certificate,
3117 which seems right, as the list of acceptable certificates is empty.
3118
311969. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3120 gave an unhelpful defer error. I have not managed to make this reject any
3121 supplied certificates, but the error message it gives is "no certificate
3122 supplied", which is not helpful.
3123
312470. exigrep's output now also includes lines that are not associated with any
3125 message, but which match the given pattern. Implemented by a patch from
3126 Martin Sluka, which also tidied up the Perl a bit.
3127
312871. Recipient callout verification, like sender verification, was using <> in
3129 the MAIL FROM command. This isn't really the right thing, since the actual
3130 sender may affect whether the remote host accepts the recipient or not. I
3131 have changed it to use the actual sender in the callout; this means that
3132 the cache record is now keyed on a recipient/sender pair, not just the
3133 recipient address. There doesn't seem to be a real danger of callout loops,
3134 since a callout by the remote host to check the sender would use <>.
3135 [SEE ABOVE: changed after hitting problems.]
3136
313772. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3138 temporary errors. However, in the case of such a code being given after
3139 the end of a data transmission (i.e. after ".") Exim was failing to write
3140 a retry record for the message. (Yes, there was some broken host that was
3141 actually sending 8xx at this point.)
3142
314373. An unknown lookup type in a host list could cause Exim to panic-die when
3144 the list was checked. (An example that provoked this was putting <; in the
3145 middle of a list instead of at the start.) If this happened during a DATA
3146 ACL check, a -D file could be left lying around. This kind of configuration
3147 error no longer causes Exim to die; instead it causes a defer errror. The
3148 incident is still logged to the main and panic logs.
3149
315074. Buglet left over from Exim 3 conversion. The message "too many messages
3151 in one connection" was written to the rejectlog but not the mainlog, except
3152 when address rewriting (yes!) was being logged.
3153
315475. Added write_rejectlog option.
3155
315676. When a system filter was run not as root (that is, when system_filter_user
3157 was set), the values of the $n variables were not being returned to the
3158 main process; thus, they were not subsequently available in the $sn
3159 variables.
3160
316177. Added +return_path_on_delivery log selector.
3162
316378. A connection timeout was being treated differently from recipients deferred
3164 when testing hosts_max_try with a message that was older than the host's
3165 retry timeout. (The host should not be counted, thus allowing all hosts to
3166 be tried at least once before bouncing.) This may have been the cause of an
3167 occasionally reported bug whereby a message would remain on the queue
3168 longer than the retry timeout, but would be bounced if a delivery was
3169 forced. I say "may" because I never totally pinned down the problem;
3170 setting up timeout/retry tests is difficult. See also the next item.
3171
317279. The ultimate address timeout was not being applied to errors that involved
3173 a combination of host plus message (for example, a timeout on a MAIL
3174 command). When an address resolved to a number of possible hosts, and they
3175 were not all tried for each delivery (e.g. because of hosts_max_try), a
3176 message could remain on the queue longer than the retry timeout.
3177
317880. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3179 Haardt.
3180
318181. Fixed an obscure SMTP outgoing bug which required at least the following
3182 conditions: (a) there was another message waiting for the same server;
3183 (b) the server returned 5xx to all RCPT commands in the first message so
3184 that the message was not completed; (c) the server dropped the connection
3185 or gave a negative response to the RSET that Exim sends to abort the
3186 transaction. The observed case was a dropped connection after DATA that had
3187 been sent in pipelining mode. That is, the server had advertised PIPELINING
3188 but was not implementing it correctly. The effect of the bug was incorrect
3189 behaviour, such as trying another host, and this could lead to a crash.
3190
3191
3192Exim version 4.30
3193-----------------
3194
3195 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3196 and daemon.c were passed as pointers to ints; they should have been
3197 pointers to socklen_t variables (which are typically unsigned ints).
3198
3199 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3200 fixed.
3201
3202 3. Fixed a really odd bug that affected only the testing scheme; patching a
3203 certain fixed string in the binary changed the value of another string that
3204 happened to be identical to the end of the original first string.
3205
3206 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3207 name", it returns that address as the IP address. On some operating
3208 systems (e.g. Solaris), it also passes back the IP address string as the
3209 "host name". However, on others (e.g. Linux), it passes back an empty
3210 string. Exim wasn't checking for this, and was changing the host name to an
3211 empty string, assuming it had been canonicized.
3212
3213 5. Although rare, it is permitted to have more than one PTR record for a given
3214 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3215 all the names associated with an address, because they do in Solaris.
3216 However, it seems that they do not in Linux for data that comes from the
3217 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3218 I found this out when I moved to a new Linux workstation and tried to run
3219 the Exim test suite.
3220
3221 To get round this problem I have changed the code so that it now does its
3222 own call to the DNS to look up PTR records when searching for a host name.
3223 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3224 addresses that are only in /etc/hosts are still found.
3225
3226 This behaviour is, however, controlled by an option called host_lookup_
3227 order, which defaults to "bydns:byaddr". If people want to use the other
3228 order, or indeed, just use one or the other means of lookup, they can
3229 specify it in this variable.
3230
3231 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3232 some operating systems, this comes back from gethostbyaddr() as an empty
3233 string, and this is what Exim used to test for. However, it seems that in
3234 other systems, "." is yielded. Exim now tests for this case too.
3235
3236 7. The values of check_spool_space and check_log_space are now held internally
3237 as a number of kilobytes instead of an absolute number of bytes. If a
3238 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3239 kilobyte. This means that much larger values can be stored.
3240
3241 8. Exim monitor: an attempt to get the action menu when not actually pointing
3242 at a message produces an empty menu entitled "No message selected". This
3243 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3244 no entries in it ("Shell widget menu has zero width and/or height"). So I
3245 have added a single, blank menu entry in this case.
3246
3247 9. Added ${quote_local_part.
3248
324910. MIME decoding is now applied to the contents of Subject: header lines when
3250 they are logged.
3251
325211. Now that a reference to $sender_host_address automatically causes a reverse
3253 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3254 host lookup before query-style lookups in lists that might use this
3255 variable. This has therefore been abolished, and the "net-" prefix is no
3256 longer necessary for query-style lookups.
3257
325812. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3259 have been a typo for LFLAGS, so it has been changed.
3260
326113. The install script calls Exim with "-C /dev/null" in order to find the
3262 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3263 to be output. Howeve, since Exim outputs its version number before the
3264 error, it didn't break the script. It just looked ugly. I fixed this by
3265 always allowing "-C /dev/null" if the caller is root.
3266
326714. Ignore overlarge ACL variable number when reading spool file - insurance
3268 against a later release with more variables having written the file.
3269
327015. The standard form for an IPv6 address literal was being rejected by EHLO.
3271 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3272 this, as well as the form without the "IPv6" on the front.
3273
327416. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3275 OS/Makefile-Darwin file.
3276
327717. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3278 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3279
328018. After change 4.21/52, "%ld" was used to format the contents of the $inode
3281 variable. However, some OS use ints for inodes. I've added cast to long int
3282 to get rid of the compiler warning.
3283
328419. I had forgotten to lock out "/../" in configuration file names when
3285 ALT_CONFIG_PREFIX was set.
3286
328720. Routers used for verification do not need to specify transports. However,
3288 if such a router generated a host list, and callout was configured, Exim
3289 crashed, because it could not find a port number from the (non-existent)
3290 transport. It now assumes port 25 in this circumstance.
3291
329221. Added the -t option to exigrep.
3293
329422. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3295 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3296 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3297 them is set, LOOKUP_LSEARCH is forced.
3298
329923. "exim -bV" now outputs a list of lookups that are included in the binary.
3300
330124. Added sender and host information to the "rejected by local_scan()" log
3302 line; previously there was no indication of these.
3303
330425. Added .include_if_exists.
3305
330626. Change 3.952/11 added an explicit directory sync on top of a file sync for
3307 Linux. It turns out that not all file systems support this. Apparently some
3308 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3309 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3310 not supported on the file descriptor, is now ignored when Exim is trying to
3311 sync a directory. This applies only to Linux.
3312
331327. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3314
331528. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3316 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3317 this.
3318
331929. Added support for maildirsize files from supplied patch (modified a bit).
3320
332130. The use of :fail: followed by an empty string could lead Exim to respond to
3322 sender verification failures with (e.g.):
3323
3324 550 Verification failed for <xxx>
3325 550 Sender verify failed
3326
3327 where the first response line was missing the '-' that indicates it is not
3328 the final line of the response.
3329
333031. The loop for finding the name of the user that called Exim had a hardwired
3331 limit of 10; it now uses the value of finduser_retries, which is used for
3332 all other user lookups.
3333
333432. Added $received_count variable, available in data and not_smtp ACLs, and at
3335 delivery time.
3336
333733. Exim was neglecting to zero errno before one call of strtol() when
3338 expanding a string and expecting an integer value. On some systems this
3339 resulted in spurious "integer overflow" errors. Also, it was casting the
3340 result into an int without checking.
3341
334234. Testing for a connection timeout using "timeout_connect" in the retry rules
3343 did not work. The code looks as if it has *never* worked, though it appears
3344 to have been documented since at least releast 1.62. I have made it work.
3345
334635. The "timeout_DNS" error in retry rules, also documented since at least
3347 1.62, also never worked. As it isn't clear exactly what this means, and
3348 clearly it isn't a major issue, I have abolished the feature by treating it
3349 as "timeout", and writing a warning to the main and panic logs.
3350
335136. The display of retry rules for -brt wasn't always showing the error code
3352 correctly.
3353
335437. Added new error conditions to retry rules: timeout_A, timeout_MX,
3355 timeout_connect_A, timeout_connect_MX.
3356
335738. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3358 to the empty sender.
3359
336039. The daemon was not analysing the content of -oX till after it had closed
3361 stderr and disconnected from the controlling terminal. This meant that any
3362 syntax errors were only noted on the panic log, and the return code from
3363 the command was 0. By re-arranging the code a little, I've made the
3364 decoding happen first, so such errors now appear on stderr, and the return
3365 code is 1. However, the actual setting up of the sockets still happens in
3366 the disconnected process, so errors there are still only recorded on the
3367 panic log.
3368
336940. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3370 connections (as happens on some IP stacks) was logged at start up time as
3371 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3372 it from "IPv6 and IPv4", which means that two separate sockets are being
3373 used.
3374
337541. The debug output for gethostbyname2() or getipnodebyname() failures now
3376 says whether AF_INET or AF_INET6 was passed as an argument.
3377
337842. Exiwhat output was messed up when time zones were included in log
3379 timestamps.
3380
338143. Exiwhat now gives more information about the daemon's listening ports,
3382 and whether -tls-on-connect was used.
3383
338444. The "port" option of the smtp transport is now expanded.
3385
338645. A "message" modifier in a "warn" statement in a non-message ACL was being
3387 silently ignored. Now an error message is written to the main and panic
3388 logs.
3389
339046. There's a new ACL modifier called "logwrite" which writes to a log file
3391 as soon as it is encountered.
3392
339347. Added $local_user_uid and $local_user_gid at routing time.
3394
339548. Exim crashed when trying to verify a sender address that was being
3396 rewritten to "<>".
3397
339849. Exim was recognizing only a space character after ".include". It now also
3399 recognizes a tab character.
3400
340150. Fixed several bugs in the Perl script that creates the exim.8 man page by
3402 extracting the relevant information from the specification. The man page no
3403 longer contains scrambled data for the -d option, and I've added a section
3404 at the front about calling Exim under different names.
3405
340651. Added "extra_headers" argument to the "mail" command in filter files.
3407
340852. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3409 crash.
3410
341153. Installed eximstats 1.29.
3412
341354. Added transport_filter_timeout as a generic transport option.
3414
341555. Exim no longer adds an empty Bcc: header to messages that have no To: or
3416 Cc: header lines. This was required by RFC 822, but it not required by RFC
3417 2822.
3418
341956. Exim used to add From:, Date:, and Message-Id: header lines to any
3420 incoming messages that did not have them. Now it does so only if the
3421 message originates locally, that is, if there is no associated remote host
3422 address. When Resent- header lines are present, this applies to the Resent-
3423 lines rather than the non-Resent- lines.
3424
342557. Drop incoming SMTP connection after too many syntax or protocol errors. The
3426 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3427
342858. Messages for configuration errors now include the name of the main
3429 configuration file - useful now that there may be more than one file in a
3430 list (.included file names were always shown).
3431
343259. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3433 for those rare installations that do not start the daemon as root or run it
3434 setuid root. I've cut out the call to initgroups() if the daemon is not
3435 root at that time.
3436
343760. The Exim user and group can now be bound into the binary as text strings
3438 that are looked up at the start of Exim's processing.
3439
344061. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3441
344262. Added $mailstore_basename variable.
3443
344463. Installed patch to sieve.c from Michael Haardt.
3445
344664. When Exim failed to open the panic log after failing to open the main log,
3447 the original message it was trying to log was written to stderr and debug
3448 output, but if they were not available (the usual case in production), it
3449 was lost. Now it is written to syslog before the two lines that record the
3450 failures to open the logs.
3451
345265. Users' Exim filters run in subprocesses under the user's uid. It is
3453 possible for a "deliver" command or an alias in a "personal" command to
3454 provoke an address rewrite. If logging of address rewriting is configured,
3455 this fails because the process is not running as root or exim. There may be
3456 a better way of dealing with this, but for the moment (because 4.30 needs
3457 to be released), I have disabled address rewrite logging when running a
3458 filter in a non-root, non-exim process.
3459
3460
3461Exim version 4.24
3462-----------------
3463
3464 1. The buildconfig auxiliary program wasn't quoting the value set for
3465 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3466 not defined. This bug was masked in 4.22 by the effect that was fixed in
3467 change 4.23/1.
3468
3469 2. Some messages that were rejected after a message id was allocated were
3470 shown as "incomplete" by exigrep. It no longer does this for messages that
3471 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3472
3473 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3474 have allow_domain_literals set, the ID did not get logged in the <= line.
3475 Domain literals are now always recognized in Message-ID: header lines.
3476
3477 4. The first argument for a ${extract expansion item is the key name or field
3478 number. Leading and trailing spaces in this item were not being ignored,
3479 causing some misleading effects.
3480
3481 5. When deliver_drop_privilege was set, single queue runner processes started
3482 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3483 same command in the process it spins off) were not dropping privilege.
3484
3485 6. When the daemon running as "exim" started a queue runner, it always
3486 re-executed Exim in the spun-off process. This is a waste of effort when
3487 deliver_drop_privilege is set. The new process now just calls the
3488 queue-runner function directly.
3489
3490
3491Exim version 4.23
3492-----------------
3493
3494 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3495 HEADERS_CHARSET.
3496
3497 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3498 ignored. Though the use of -oP was forcing the writing of a pid file, it
3499 was always written to the default place.
3500
3501 3. If the message "no IP address found for host xxxx" is generated during
3502 incoming verification, it is now followed by identification of the incoming
3503 connection (so you can more easily find what provoked it).
3504
3505 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3506
3507 5. Added some features to "harden" Exim a bit more against certain attacks:
3508
3509 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3510 be put in Local/Makefile. This is like the never_users runtime option,
3511 but it cannot be overridden. The default setting is "root".
3512
3513 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3514 prefix string with which any file named in a -C command line option
3515 must start.
3516
3517 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3518 is retained for -C and -D only if the caller of Exim is root. Without
3519 it, the exim user may also use -C and -D and retain privilege.
3520
3521 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3522 command line option is disabled.
3523
3524 6. Macro names set by the -D option must start with an upper case letter, just
3525 like macro names defined in the configuration file.
3526
3527 7. Added "dereference=" facility to LDAP.
3528
3529 8. Two instances of the typo "uknown" in the source files are fixed.
3530
3531 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3532 the Configure-Makefile script screwed up while processing it.
3533
353410. Incorporated PCRE 4.4.
3535
353611. The SMTP synchronization check was not operating right at the start of an
3537 SMTP session. For example, it could not catch a HELO sent before the client
3538 waited for the greeting. There is now a check for outstanding input at the
3539 point when the greeting is written. Because of the duplex, asynchronous
3540 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3541 way, but not yet received, when the check is performed.
3542
354312. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3544 on TCP/IP sockets, because this apparently causes some broken clients to
3545 timeout.
3546
354713. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3548 unchanged) from the Cygwin maintainer.
3549
355014. The code for -bV that shows what is in the binary showed "mbx" when maildir
3551 was supported instead of testing for mbx. Effectively a typo.
3552
355315. The spa authenticator server code was not checking that the input it
3554 received was valid base64.
3555
355616. The debug output line for the "set" modifier in ACLs was not showing the
3557 name of the variable that was being set.
3558
355917. Code tidy: the variable type "vtype_string" was never used. Removed it.
3560
356118. Previously, a reference to $sender_host_name did not cause a DNS reverse
3562 lookup on its own. Something else was needed to trigger the lookup. For
3563 example, a match in host_lookup or the need for a host name in a host list.
3564 Now, if $sender_host_name is referenced and the host name has not yet been
3565 looked up, a lookup is performed. If the lookup fails, the variable remains
3566 empty, and $host_lookup_failed is set to "1".
3567
356819. Added "eqi" as a case-independent comparison operator.
3569
357020. The saslauthd authentication condition could segfault if neither service
3571 nor realm was specified.
3572
357321. If an overflowing value such as "2048M" was set for message_size_limit, the
3574 error message that was logged was misleading, and incoming SMTP
3575 connections were dropped. The message is now more accurate, and temporary
3576 errors are given to SMTP connections.
3577
357822. In some error situations (such as 21 above) Exim rejects all SMTP commands
3579 (except RSET) with a 421 error, until QUIT is received. However, it was
3580 failing to send a response to QUIT.
3581
358223. The HELO ACL was being run before the code for helo_try_verify_hosts,
3583 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3584 ACL is now run after the helo_try_verify_hosts code.
3585
358624. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3587 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3588 case-independent, so other case variants are also recognized). Apparently
3589 some systems use these upper case variants.
3590
359125. If more than two messages were waiting for the same host, and a transport
3592 filter was specified for the transport, Exim sent two messages over the
3593 same TCP/IP connection, and then failed with "socket operation on non-
3594 socket" when it tried to send the third.
3595
359626. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3597
359827. The extern definition of crypt16() in expand.c was not being excluded when
3599 the OS had its own crypt16() function.
3600
360128. Added bounce_return_body as a new option, and bounce_return_size_limit
3602 as a preferred synonym for return_size_limit, both as an option and as an
3603 expansion variable.
3604
360529. Added LIBS=-liconv to OS/Makefile-OSF1.
3606
360730. Changed the default configuration ACL to relax the local part checking rule
3608 for addresses that are not in any local domains. For these addresses,
3609 slashes and pipe symbols are allowed within local parts, but the sequence
3610 /../ is explicitly forbidden.
3611
361231. SPA server authentication was not clearing the challenge buffer before
3613 using it.
3614
361532. log_message in a "warn" ACL statement was writing to the reject log as
3616 well as to the main log, which contradicts the documentation and doesn't
3617 seem right (because no rejection is happening). So I have stopped it.
3618
361933. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3620 However, I am unable to do any testing of this.
3621
362234. Fixed an infelicity in the appendfile transport. When checking directories
3623 for a mailbox, to see if any needed to be created, it was accidentally
3624 using path names with one or more superfluous leading slashes; tracing
3625 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3626
362735. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3628 contents are added to the log line that is written for every discarded
3629 recipient. (Previously a log_message setting was ignored.)
3630
363136. The ${quote: operator now quotes the string if it is empty.
3632
363337. The install script runs exim in order to find its version number. If for
3634 some reason other than non-existence or emptiness, which it checks, it
3635 could not run './exim', it was installing it with an empty version number,
3636 i.e. as "exim-". This error state is now caught, and the installation is
3637 aborted.
3638
363938. An argument was missing from the function that creates an error message
3640 when Exim fails to connect to the socket for saslauthd authentication.
3641 This could cause Exim to crash, or give a corrupted message.
3642
364339. Added isip, isip4, and isip6 to ${if conditions.