Ignore EPIPE as well as ECONNECT when closing down an SMTP session in
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
1f872c80 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.388 2006/09/05 14:14:32 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
TF
6Exim version 4.64
7-----------------
8
9TF/01 In the add_headers option to the mail command in an Exim filter,
10 there was a bug that Exim would claim a syntax error in any
11 header after the first one which had an odd number of characters
12 in the field name.
13
2b1c6e3a
PH
14PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
15 callout verification, Exim cached a "reject" for the entire domain. This
16 is correct for most verifications, but it is not correct for a recipient
17 verification with use_sender or use_postmaster set, because in that case
18 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
19 case of MAIL FROM:<> rejection from other early rejections (e.g.
20 rejection of HELO). When verifying a recipient using a non-null MAIL
21 address, the cache is ignored if it shows MAIL FROM:<> rejection.
22 Whatever the result of the callout, the value of the domain cache is
23 left unchanged (for any other kind of callout, getting as far as trying
24 RCPT means that the domain itself is ok).
25
1f872c80
PH
26PH/02 Tidied a number of unused variable and signed/unsigned warnings that
27 gcc 4.1.1 threw up.
28
29PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
30 manifest itself as EPIPE rather than ECONNECT. When tidying away a
31 session, the daemon ignores ECONNECT errors and logs others; it now
32 ignores EPIPE as well.
33
944e9e9c 34
478be7b0
SC
35Exim version 4.63
36-----------------
37
38SC/01 Use a glob alias rather than an array ref in eximstats generated
39 parser. This improves both readability and performance.
40
41SC/02 Collect SpamAssassin and rejection statistics in eximstats.
42 Don't display local sender or destination tables in eximstats unless
43 there is data to show.
44 Added average volumes into the eximstats top table text output.
45
46SC/03 Collect data on the number of addresses (recipients) as well
47 as the number of messages in eximstats.
48
2b965a65
TF
49TF/01 Correct an error in the documentation for the redirect router. Exim
50 does (usually) call initgroups() when daemonizing.
478be7b0 51
45b91596
PH
52TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
53 with consistent privilege compared to when running as a daemon.
478be7b0 54
c59f5781
TF
55TF/03 Note in the spec that $authenticated_id is not set for local
56 submissions from trusted users.
57
90fc3069
TF
58TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
59 Thanks to Dean Brooks <dean@iglou.com> for the patch.
60
6083aca0
TF
61TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
62 by adding some example configuration directives to the default
63 configuration file. A little bit of work is required to uncomment the
64 directives and define how usernames and passwords are checked, but
65 there is now a framework to start from.
66
765b530f
PH
67PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
68 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
69 without this. I don't know how relevant this is to other LDAP libraries.
70
4e167a8c
PH
71PH/02 Add the verb name to the "unknown ACL verb" error.
72
4608d683
PH
73PH/03 Magnus Holmgren's patch for filter_prepend_home.
74
b8dc3e4a
PH
75PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
76
5418e93b
PH
77PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
78 directory not expanded when it should be if an expanded home directory
79 was set for the address (which is overridden by the transport).
80
b4a9bda2
PH
81PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
82 libradius.
83
45b91596
PH
84PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
85 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
86 because it is too late at that time, and has no effect.
87
5547e2c5
PH
88PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
89 security issue with \' (bugzilla #107). I could not use the
90 PQescapeStringConn() function, because it needs a PGconn value as one of
91 its arguments.
92
dbcef0ea
PH
93PH/08 When testing addresses using -bt, indicate those final addresses that
94 are duplicates that would not cause an additional delivery. At least one
95 person was confused, thinking that -bt output corresponded to deliveries.
96 (Suppressing duplicates isn't a good idea as you lose the information
97 about possibly different redirections that led to the duplicates.)
98
25257489
PH
99PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
100 systems where poll() doesn't work, in particular OS X.
101
c816d124
PH
102PH/10 Added more information to debugging output for retry time not reached.
103
a9ccd69a
PH
104PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
105 operations in malware.c.
106
75fa1910
PH
107PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
108 signatures.
109
a7d7aa58
PH
110PH/13 If write_rejectlog was set false when logging was sent to syslog with
111 syslog_duplication set false, log lines that would normally be written
112 both the the main log and to the reject log were not written to syslog at
113 all.
114
42119b09
PH
115PH/14 In the default configuration, change the use of "message" in ACL warn
116 statements to "add_header".
117
41609df5
PH
118PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
119 not followed by a command (e.g. "seen endif").
120
a5bd321b
PH
121PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
122 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
123 latter.
124
e85a7ad5 125PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
126 so that it is now:
127
e85a7ad5
PH
128 ${if or { \
129 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
130 { match{$h_precedence:}{(?i)bulk|list|junk} } \
131 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
132 }{no}{yes}}
133
e85a7ad5
PH
134 The Auto-Submitted: and various List- headers are standardised, whereas I
135 don't think Precedence: ever was.
5dff5817 136
d8fe1c03
PH
137PH/18 Refactored debugging code in route_finduser() to show more information,
138 in particular, the error code if getpwnam() issues one.
139
16282d2b
PH
140PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
141 This is apparently needed in addition to the PH/07 change above to avoid
142 any possible encoding problems.
143
35d40a98
PH
144PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
145 but not after initializing Perl.
146
034d99ab
PH
147PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
148 output them only if debugging. By default they are written stderr,
149 apparently, which is not desirable.
150
6ec97b1b
PH
151PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
152 queries.
153
e22ca4ac
JJ
154JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
155 --not options
156
157JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
158
33d73e3b
PH
159PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
160 authenticated or an ident call has been made. Suppress the default
161 values for $authenticated_id and $authenticated_sender (but permit -oMai
162 and -oMas) when testing with -bh.
163
9ecb03f3
PH
164PH/24 Re-jigged the order of the tests in the default configuration so that the
165 tests for valid domains and recipients precede the DNS black list and CSA
166 tests, on the grounds that those ones are more expensive.
167
084efe8d
PH
168PH/25 Exim was not testing for a space following SMTP commands such as EHLO
169 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
170 This bug exists in every version of Exim that I still have, right back to
171 0.12.
172
366fc9f0
PH
173PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
174 However, an attempt to turn on case-sensitivity in a regex key by
175 including (?-i) didn't work because the subject string was already
176 lowercased, and the effects were non-intuitive. It turns out that a
177 one-line patch can be used to allow (?-i) to work as expected.
178
c59f5781 179
c887c79e
TF
180Exim version 4.62
181-----------------
182
183TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
184 other effects) broke the use of negated acl sub-conditions.
185
1cce3af8
PH
186PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
187 patch).
188
afb3eaaf
PH
189PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
190 "Deny" causes Exim to reject the incoming connection with a 554 error.
191 Unfortunately, if there is a major crisis, such as a disk failure,
192 tcp-wrappers gives "deny", whereas what one would like would be some
193 kind of temporary error. A kludge has been added to help with this.
194 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
195 554 error is used if errno is still zero or contains ENOENT (which occurs
196 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
197 451 error is used.
198
e173618b
PH
199PH/03 Add -lutil to the default FreeBSD LIBS setting.
200
dd16e114
PH
201PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
202 errors. Otherwise a message that provokes a temporary error (when other
203 messages do not) can cause a whole host to time out.
204
f7fd3850
PH
205PH/05 Batch deliveries by appendfile and pipe transports did not work when the
206 addresses were routed directly to files or pipes from a redirect router.
207 File deliveries just didn't batch; pipe deliveries might have suffered
208 odd errors.
209
d87df92c
PH
210PH/06 A failure to get a lock for a hints database would erroneously always say
211 "Failed to get write lock", even when it was really a read lock.
212
7e9f683d
PH
213PH/07 The appendfile transport was creating MBX lock files with a fixed mode
214 of 0600. This has been changed to use the value of the lockfile_mode
215 option (which defaults to 0600).
216
bfad5236
PH
217PH/08 Applied small patch from the Sieve maintainer.
218
01c490df
PH
219PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
220 folder from quota calculations, a direct delivery into this folder messed
221 up the contents of the maildirsize file. This was because the regex was
222 used only to exclude .Trash (or whatever) when the size of the mailbox
223 was calculated. There was no check that a delivery was happening into an
224 excluded directory. This bug has been fixed by ignoring all quota
225 processing for deliveries into excluded directories.
226
d6629cdc
PH
227PH/10 Added the maildirfolder_create_regex option to appendfile.
228
1cce3af8 229
214e2000
PH
230Exim version 4.61
231-----------------
232
233PH/01 The code for finding all the local interface addresses on a FreeBSD
234 system running IPv6 was broken. This may well have applied to all BSD
235 systems, as well as to others that have similar system calls. The broken
236 code found IPv4 interfaces correctly, but gave incorrect values for the
237 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
238 that it would not match correctly against @[] and not recognize the IPv6
239 addresses as local.
240
f9daeae0
PH
241PH/02 The ipliteral router was not recognizing addresses of the form user@
242 [ipv6:....] because it didn't know about the "ipv6:" prefix.
243
7e66e54d
PH
244PH/03 Added disable_ipv6.
245
c8ea1597
PH
246PH/04 Changed $reply_address to use the raw form of the headers instead of the
247 decoded form, because it is most often used to construct To: headers
248 lines in autoreplies, and the decoded form may well be syntactically
249 invalid. However, $reply_address has leading white space removed, and all
250 newlines turned into spaces so that the autoreply transport does not
251 grumble.
252
911f6fde
PH
253PH/05 If group was specified without a user on a router, and no group or user
254 was specified on a transport, the group from the router was ignored.
255
47ca6d6c
PH
256PH/06 Increased the number of ACL variables to 20 of each type, and arranged
257 for visible compile-time settings that can be used to change these
258 numbers, for those that want even more. Backwards compatibility with old
259 spool files has been maintained. However, going back to a previous Exim
260 release will lost any variables that are in spool files.
261
ed0e9820
PH
262PH/07 Two small changes when running in the test harness: increase delay when
263 passing a TCP/IP connection to a new process, in case the original
264 process has to generate a bounce, and remove special handling of
265 127.0.0.2 (sic), which is no longer necessary.
266
eff37e47
PH
267PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
268 be the same on different OS.
269
1921d2ea
PH
270PH/09 Moved a debug statement in filter processing to avoid a race problem when
271 testing.
272
b3f69ca8
JJ
273JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
274 whether --show-vars was specified or not
275
276JJ/02 exipick: Added support for new ACL variable spool format introduced
277 in 4.61-PH/06
278
424a1c63
PH
279PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
280 syntactically invalid From: or Reply-to: line, and a filter used this to
281 generate an autoreply, and therefore failed to obtain an address for the
282 autoreply, Exim could try to deliver to a non-existent relative file
283 name, causing unrelated and misleading errors. What now happens is that
284 it logs this as a hard delivery error, but does not attempt to create a
285 bounce message.
286
7a100415
PH
287PH/11 The exinext utility has a -C option for testing purposes, but although
288 the given file was scanned by exinext itself; it wasn't being passed on
289 when Exim was called.
290
19b9dc85
PH
291PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
292 an end-of-file indication when reading a command response.
293
309bd837
PH
294PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
295 compiled. In many other places in Exim, IPv6 addresses are always
296 recognized, so I have changed this. It also means that IPv4 domain
297 literals of the form [IPV4:n.n.n.n] are now always recognized.
298
59e82a2a
PH
299PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
300 used if the router is not running as root, for example, when verifying at
301 ACL time, or when using -bh. The debugging output from this situation was
302 non-existent - all you got was a failure to exec. I have made two
303 changes:
304
305 (a) Failures to set uid/gid, the current directory, or a process leader
306 in a subprocess such as that created by queryprogram now generate
307 suitable debugging ouput when -d is set.
308
309 (b) The queryprogram router detects when it is not running as root,
310 outputs suitable debugging information if -d is set, and then runs
311 the subprocess without attempting to change uid/gid.
312
9edc04ce
PH
313PH/15 Minor change to Makefile for building test_host (undocumented testing
314 feature).
315
1349e1e5
PH
316PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
317 additional section of a DNS packet that returns MX or SRV records.
318 Instead, it always explicitly searches for A/AAAA records. This avoids
319 major problems that occur when a DNS server includes only records of one
320 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
321 fixed another bug: if SRV records were looked up and the corresponding
322 address records were *not* found in the additional section, the port
323 values from the SRV records were lost.
324
ea49d0e1
PH
325PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
326 using the correct key (the original address) when searching the retry
327 rules in order to find which one to use for generating the retry hint.
328
064a94c9
PH
329PH/18 If quota_warn_message contains a From: header, Exim now refrains from
330 adding the default one. Similarly, if it contains a Reply-To: header, the
331 errors_reply_to option, if set, is not used.
332
727071f8
PH
333PH/19 When calculating a retry time, Exim used to measure the "time since
334 failure" by looking at the "first failed" field in the retry record. Now
335 it does not use this if it is later than than the arrival time of the
336 message. Instead it uses the arrival time. This makes for better
337 behaviour in cases where some deliveries succeed, thus re-setting the
338 "first failed" field. An example is a quota failure for a huge message
339 when small messages continue to be delivered. Without this change, the
340 "time since failure" will always be short, possible causing more frequent
341 delivery attempts for the huge message than are intended.
dd16e114 342 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 343
f78eb7c6
PH
344PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
345 $1, $2, $3) because the numerical variables can be reset during some
346 expansion items (e.g. "match"), thereby losing the authentication data.
347
21c28500
PH
348PH/21 Make -bV show the size of off_t variables so that the test suite can
349 decide whether to run tests for quotas > 2G.
350
351PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
352 mailbox_size, and mailbox_filecount in the appendfile transport. If a
353 filecount value is greater than 2G or if a quota value is greater than 2G
354 on a system where the size of off_t is not greater than 4, a panic error
355 is given.
356
1688f43b
PH
357PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
358 never match. The debug and -bh output now contains an explicit error
359 message indicating a malformed IPv4 address or mask.
360
361PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
362 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
363 PH/23 above applies.
364
9675b384
PH
365PH/25 Do not write to syslog when running in the test harness. The only
366 occasion when this arises is a failure to open the main or panic logs
367 (for which there is an explicit test).
368
6a3f1455
PH
369PH/26 Added the /no_tell option to "control=freeze".
370
dac79d3e
PH
371PH/27 If a host name lookup failed very early in a connection, for example, if
372 the IP address matched host_lookup and the reverse lookup yielded a name
373 that did not have a forward lookup, an error message of the form "no IP
374 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
375 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 376
5977a0b3
PH
377PH/28 An enabling patch from MH: add new function child_open_exim2() which
378 allows the sender and the authenticated sender to be set when
379 submitting a message from within Exim. Since child_open_exim() is
380 documented for local_scan(), the new function should be too.
381
c91535f3
PH
382PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
383 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
384 results in an empty string is now treated as unset.
385
0d46a8c8
PH
386PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
387
278c6e6c
PH
388PH/31 Added sender_verify_fail logging option.
389
2cbb4081
PH
390PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
391 needed by RFC 822 but not by RFC 2822 was commented out. I have now
392 tidied the source and removed it altogether.
393
3eef829e
PH
394PH/33 When a queue run was abandoned because the load average was too high, a
395 log line was always written; now it is written only if the queue_run log
396 selector is set. In addition, the log line for abandonment now contains
397 information about the queue run such as the pid. This is always present
398 in "start" and "stop" lines but was omitted from the "abandon" line.
399
1ab95fa6
PH
400PH/34 Omit spaces between a header name and the colon in the error message that
401 is given when verify = headers_syntax fails (if there are lots of them,
402 the message gets confusing).
403
230205fc
PH
404PH/35 Change the default for dns_check_names_pattern to allow slashes within
405 names, as there are now some PTR records that contain slashes. This check
406 is only to protect against broken name servers that fall over on strange
407 characters, so the fact that it applies to all lookups doesn't matter.
408
75e0e026
PH
409PH/36 Now that the new test suite is complete, we can remove some of the
410 special code in Exim that was needed for the old test suite. For example,
411 sorting DNS records because real resolvers return them in an arbitrary
412 order. The new test suite's fake resolver always returns records in the
413 same order.
414
415PH/37 When running in the test harness, use -odi for submitted messages (e.g.
416 bounces) except when queue_only is set, to avoid logging races between
417 the different processes.
418
145396a6
PH
419PH/38 Panic-die if .include specifies a non-absolute path.
420
3cd34f13
PH
421PH/39 A tweak to the "H" retry rule from its user.
422
11121d3d
JJ
423JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
424 a label. They prevented compilation on older perls.
425
426JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
427 a warning to be raised on newish perls.
428
429JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
430 on queue. Changes to match documented behaviour of showing count of
431 messages matching specified criteria.
432
8def5aaf
PH
433PH/40 Changed the default ident timeout from 30s to 5s.
434
929ba01c
PH
435PH/41 Added support for the use of login_cap features, on those BSD systems
436 that have them, for controlling the resources used by pipe deliveries.
437
2632889e
PH
438PH/42 The content-scanning code uses fopen() to create files in which to put
439 message data. Previously it was not paying any attention to the mode of
440 the files. Exim runs with umask(0) because the rest of the code creates
441 files with open(), and sets the required mode explicitly. Thus, these
442 files were ending up world-writeable. This was not a big issue, because,
443 being within the spool directory, they were not world-accessible. I have
444 created a function called modefopen, which takes an additional mode
445 argument. It sets umask(777), creates the file, chmods it to the required
446 mode, then resets the umask. All the relevant calls to fopen() in the
447 content scanning code have been changed to use this function.
448
944a9c55
PH
449PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
450 to 24 hours. This avoids potential overflow problems when processing G
451 and H retry rules. I suspect nobody ever tinkers with this value.
452
4a23603b
PH
453PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
454
4730f942
PH
455PH/45 When the plaintext authenticator is running as a client, the server's
456 challenges are checked to ensure they are valid base64 strings. By
457 default, the authentication attempt is cancelled if an invalid string is
458 received. Setting client_ignore_invalid_base64 true ignores these errors.
459 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
460 they are received. Thus, the responses can be made to depend on the
461 challenges. If an invalid string is ignored, an empty string is placed in
462 the variable.
463
30dba1e6
PH
464PH/46 Messages that are created by the autoreply transport now contains a
465 References: header, in accordance with RFCs 2822 and 3834.
466
382afc6b
PH
467PH/47 Added authenticated_sender_force to the smtp transport.
468
a86229cf
PH
469PH/48 The ${prvs expansion was broken on systems where time_t was long long.
470
50c99ba6
PH
471PH/49 Installed latest patch from the Sieve maintainer.
472
d35e429d
PH
473PH/50 When an Exim quota was set without a file count quota, and mailbox_size
474 was also set, the appendfile transport was unnecessarily scanning a
475 directory of message files (e.g. for maildir delivery) to find the count
476 of files (along with the size), even though it did not need this
477 information. It now does the scan only if it needs to find either the
478 size of the count of files.
479
f90d018c
PH
480PH/51 Added ${time_eval: to convert Exim time strings into seconds.
481
75def545
PH
482PH/52 Two bugs concerned with error handling when the smtp transport is
483 used in LMTP mode:
484
485 (i) Exim was not creating retry information for temporary errors given
486 for individual recipients after the DATA command when the smtp transport
487 was used in LMTP mode. This meant that they could be retried too
488 frequently, and not timed out correctly.
489
490 (ii) Exim was setting the flag that allows error details to be returned
491 for LMTP errors on RCPT commands, but not for LMTP errors for individual
492 recipients that were returned after the DATA command.
493
494PH/53 This is related to PH/52, but is more general: for any failing address,
495 when detailed error information was permitted to be returned to the
496 sender, but the error was temporary, then after the final timeout, only
497 "retry timeout exceeded" was returned. Now it returns the full error as
498 well as "retry timeout exceeded".
499
c46782ef
PH
500PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
501 do this, and (what is worse) MTAs that accept it.
502
71fafd95
PH
503PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
504 will now be deprecated.
505
2c5db4fd
PH
506PH/56 New os.c-cygwin from the Cygwin maintainer.
507
9cf6b11a
JJ
508JJ/06 exipick: added --unsorted option to allow unsorted output in all output
509 formats (previously only available in exim formats via -bpr, -bpru,
510 and -bpra. Now also available in native and exiqgrep formats)
511
512JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
513 with very large, slow to parse queues
514
515JJ/08 exipick: added ! as generic prefix to negate any criteria format
516
517JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
518
898d150f
PH
519PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
520 responses to authentication challenges, though it was showing the
521 challenges; (ii) I've removed the CR characters from the debug output for
522 SMTP output lines.
523
46218253
PH
524PH/58 Allow for the insertion of a newline as well as a space when a string
525 is turned into more than one encoded-word during RFC 2047 encoding. The
526 Sieve code now uses this.
527
e97957bc
PH
528PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
529 data_4xx, lost_connection, tls_required.
530
81e509d7
PH
531PH/60 When a VRFY deferred or FAILED, the log message rather than the user
532 message was being sent as an SMTP response.
533
3d240ff7
PH
534PH/61 Add -l and -k options to exicyclog.
535
b37c4101
PH
536PH/62 When verifying, if an address was redirected to one new address, so that
537 verification continued, and the new address failed or deferred after
538 having set something in $address_data, the value of $address_data was not
539 passed back to the ACL. This was different to the case when no
540 redirection occurred. The value is now passed back in both cases.
541
79378e0f
PH
542PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
543 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
544 use login_cap.h, so on its own it isn't the distinguishing feature. The
545 new name refers directly to the setclassresources() function.
546
e49c7bb4
PH
547PH/65 Added configuration files for NetBSD3.
548
d114ec46
PH
549PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
550
f3d7df6c
PH
551PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
552 is preferred over IPv4.
553
715ab376
PH
554PH/68 The bounce_return_message and bounce_return_body options were not being
555 honoured for bounces generated during the reception of non-SMTP messages.
556 In particular, this applied to messages rejected by the ACL. This bug has
557 been fixed. However, if bounce_return_message is true and bounce_return_
558 body is false, the headers that are returned for a non-SMTP message
559 include only those that have been read before the error was detected.
560 (In the case of an ACL rejection, they have all been read.)
561
6b31b150
PH
562PH/69 The HTML version of the specification is now built in a directory called
563 spec_html instead of spec.html, because the latter looks like a path with
564 a MIME-type, and this confuses some software.
565
566PH/70 Catch two compiler warnings in sieve.c.
567
d515a917
PH
568PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
569 function verify_get_ident() calls ip_connect() to connect a socket, but
570 if the "connect()" function timed out, ip_connect() used to close the
571 socket. However, verify_get_ident() also closes the socket later, and in
572 between Exim writes to the log, which may get opened at this point. When
573 the socket was closed in ip_connect(), the log could get the same file
574 descriptor number as the socket. This naturally causes chaos. The fix is
575 not to close the socket in ip_connect(); the socket should be closed by
576 the function that creates it. There was only one place in the code where
577 this was missing, in the iplookup router, which I don't think anybody now
578 uses, but I've fixed it anyway.
579
9b8fadde
PH
580PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
581 well as to direct DNS lookups. Otherwise the handling of names in host
582 lists is inconsistent and therefore confusing.
583
214e2000 584
5de37277
PH
585Exim version 4.60
586-----------------
587
cc38ddbf
PH
588PH/01 Two changes to the default runtime configuration:
589
590 (1) Move the checks for relay_from_hosts and authenticated clients from
591 after to before the (commented out) DNS black list checks.
592
593 (2) Add control=submission to the relay_from_hosts and authenticated
594 clients checks, on the grounds that messages accepted by these
595 statements are most likely to be submissions.
5de37277 596
72fdd6ae
PH
597PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
598
599 (1) Generate an error if the third argument for the ${prvs expansion is
600 not a single digit.
601
602 (2) Treat a missing third argument of ${prvscheck as if it were an empty
603 string.
604
605 (3) Reset the variables that are obtained from the first argument of
606 ${prvscheck and used in the second argument before leaving the code,
607 because their memory is reclaimed, so using them afterwards may do
608 silly things.
609
610 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
611 one (it's much easier than Tom thought :-).
612
613 (5) Because of (4), we can now allow for the use of $prvscheck_result
614 inside the third argument.
cb9328de 615
cb741023
PH
616PH/03 For some reason, the default setting of PATH when running a command from
617 a pipe transport was just "/usr/bin". I have changed it to
618 "/bin:/usr/bin".
619
f174f16e
PH
620PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
621 anything to be listed in the output from -bV.
b2f5a032 622
c25242d7
PH
623PH/05 When a filter generated an autoreply, the entire To: header line was
624 quoted in the delivery log line, like this:
625
626 => >A.N.Other <ano@some.domain> <original@ddress> ...
627
628 This has been changed so that it extracts the operative address. There
629 may be more than one such address. If so, they are comma-separated, like
630 this:
631
632 => >ano@some.domain,ona@other.domain <original@ddress> ...
633
82c19f95
PH
634PH/06 When a client host used a correct literal IP address in a HELO or EHLO
635 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
636 not being looked up in the rDNS to get a host name, Exim was showing the
637 IP address twice in Received: lines, even though the IP addresses were
638 identical. For example:
639
640 Received: from [1.2.3.4] (helo=[1.2.3.4])
641
642 However, if the real host name was known, it was omitting the HELO data
643 if it matched the actual IP address. This has been tidied up so that it
644 doesn't show the same IP address twice.
645
d7ffbc12
PH
646PH/07 When both +timestamp and +memory debugging was on, the value given by
647 $tod_xxx expansions could be wrong, because the tod_stamp() function was
648 called by the debug printing, thereby overwriting the timestamp buffer.
649 Debugging no longer uses the tod_stamp() function when +timestamp is set.
650
9f526266
PH
651PH/08 When the original message was included in an autoreply transport, it
652 always said "this is a copy of the message, including all the headers",
653 even if body_only or headers_only was set. It now gives an appropriate
654 message.
655
87fcc8b9
PH
656PH/09 Applied a patch from the Sieve maintainer which:
657
658 o fixes some comments
659 o adds the (disabled) notify extension core
660 o adds some debug output for the result of if/elsif tests
661 o points to the current vacation draft in the documentation
662 and documents the missing references header update
663
664 and most important:
665
666 o fixes a bug in processing the envelope test (when testing
667 multiple envelope elements, the last element determinted the
668 result)
669
456682f5
PH
670PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
671 Electronic Mail") by including:
672
673 Auto-submitted: auto-generated
674
675 in the messages that it generates (bounce messages and others, such as
676 warnings). In the case of bounce messages for non-SMTP mesages, there was
677 also a typo: it was using "Auto_submitted" (underscore instead of
678 hyphen). Since every message generated by Exim is necessarily in response
679 to another message, thes have all been changed to:
680
681 Auto-Submitted: auto-replied
682
683 in accordance with these statements in the RFC:
684
685 The auto-replied keyword:
686
687 - SHOULD be used on messages sent in direct response to another
688 message by an automatic process,
689
690 - MUST NOT be used on manually-generated messages,
691
692 - MAY be used on Delivery Status Notifications (DSNs) and Message
693 Disposition Notifications (MDNs),
694
695 - MUST NOT be used on messages generated by automatic or periodic
696 processes, except for messages which are automatic responses to
697 other messages.
698
3e46c1aa
PH
699PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
700 to the default Received: header definition.
456682f5 701
49826d12
PH
702PH/12 Added log selector acl_warn_skipped (default on).
703
eba0c039
PH
704PH/13 After a successful wildlsearch lookup, discard the values of numeric
705 variables because (a) they are in the wrong storage pool and (b) even if
706 they were copied, it wouldn't work properly because of the caching.
707
a0d6ba8a
PH
708PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
709 checking when decoding. Apparently there are clients that generate
710 overlong encoded strings. Why am I not surprised?
711
f0917727
PH
712PH/15 If the first argument of "${if match_address" was not empty, but did not
713 contain an "@" character, Exim crashed. Now it writes a panic log message
714 and treats the condition as false.
715
096fee00
PH
716PH/16 In autoreply, treat an empty string for "once" the same as unset.
717
024bd3c2
PH
718PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
719 extension "envelope-auth". The code is finished and in agreement with
720 other implementations, but there is no documentation so far and in fact,
721 nobody wrote the draft yet. This extension is currently #undef'ed, thus
722 not changing the active code.
723
724 Print executed "if" and "elsif" statements when debugging is used. This
725 helps a great deal to understand what a filter does.
726
727 Document more things not specified clearly in RFC3028. I had all this
728 sorted out, when out of a sudden new issues came to my mind. Oops."
729
df199fec
PH
730PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
731 (Bugzilla #53).
732
d27f1df3
PH
733PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
734 canonical form (as documented). However, after a host name lookup from
735 the IP address, check_host() was doing a simple string comparison with
736 addresses acquired from the DNS when checking that the found name did
737 have the original IP as one of its addresses. Since any found IPv6
738 addresses are likely to be in abbreviated form, the comparison could
739 fail. Luckily, there already exists a function for doing the comparison
740 by converting both addresses to binary, so now that is used instead of
741 the text comparison.
742
96776534
PH
743PH/20 There was another similar case to PH/19, when a complete host name was
744 given in a host list; looking up its IP address could give an abbreviated
745 form, whereas the current host's name might or might not be abbreviated.
746 The same fix has been applied.
747
5de37277 748
9a799bc0
PH
749Exim version 4.54
750-----------------
751
752PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
753 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
754 It now does.
755
99a4b039
PH
756PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
757 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
758
759PH/03 Typo: missing ".o" in src/pcre/Makefile.
760
4b233853
PH
761PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
762 header line, restrict the check to what is listed in RFCs 2369 and 2929.
763 Also, for "Auto-Submitted", treat anything other than "no" as
764 non-personal, in accordance with RFC 3834. (Previously it treated
765 anything starting "auto-" as non-personal.)
766
8857ccfd
PH
767TF/01 The control=submission/name=... option had a problem with syntax
768 errors if the name included a slash character. The /name= option
769 now slurps the rest of the string, so it can include any characters
770 but it must come last in the list of options (after /sender_retain
771 or /domain=).
772
433a2980
PH
773PH/05 Some modifications to the interface to the fake nameserver for the new
774 testing suite.
775
3e46c1aa 776
9a799bc0 777
e3a311ba
TK
778Exim version 4.53
779-----------------
780
781TK/01 Added the "success_on_redirect" address verification option. See
782 NewStuff for rationale and an example.
783
13b685f9
PH
784PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
785
395ff96d
PH
786PH/02 Patch to exigrep to allow it to work on syslog lines.
787
5b68f6e4
PH
788PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
789 fread() to skip over the body file's header line, because in Cygwin the
790 header line is locked and is inaccessible.
791
1ab52c69
PH
792PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
793 co-exist for some time) to make it clear that it is the Exim ID that is
794 referenced, not the Message-ID: header line.
795
b07e6aa3
PH
796PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
797 string_format() function, because snprintf() does not exist on all
798 operating systems.
799
254e032f
PH
800PH/06 The use of forbid_filter_existstest now also locks out the use of the
801 ${stat: expansion item.
802
3af76a81
PH
803PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
804 protocol synchronization error", to keep the pedants happy.
805
2548ba04
PH
806PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
807 well as for IRIX systems, when gcc is being used. See the host.c source
808 file for comments.
809
b6c6011d
PH
810PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
811
cf39cf57
PH
812PH/10 Named domain lists were not working if used in a queue_smtp_domains
813 setting.
814
f1513293
PH
815PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
816 transport and to the smtp transport in LMTP mode.
817
727549a4
PH
818TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
819
af46795e
PH
820PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
821 run a filter in a subprocess. This could lead to confusion in subsequent
822 lookups in the parent process. There should also be a search_tidyup() at
823 the end of the subprocess.
824
d7b47fd0
PH
825PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
826 only if the host matched helo_try_verify_hosts, which caused the
827 verification to occur when the EHLO/HELO command was issued. The ACL just
828 tested the remembered result. Now, if a previous verification attempt has
829 not happened, "verify = helo" does it there and then.
830
ee744174
JJ
831JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
832
b582ab87
PH
833TK/03 Fix log output including CR from clamd.
834
41a13e0a
PH
835PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
836 exist provoked a memory error which could cause a segfault.
837
f625cc5a
PH
838PH/15 Installed PCRE 6.2
839
840PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
841
21f7af35
PH
842PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
843 of the problem. Specifically, suggested +O2 rather than +O1 for the
844 HP-UX compiler.
845
31480e42
PH
846PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
847
2d280592
PH
848PH/20 If a delivery was routed to a non-standard port by means of an SRV
849 record, the port was not correctly logged when the outgoing_port log
850 selector was set (it logged the transort's default port).
851
7cd1141b
PH
852PH/21 Added support for host-specific ports to manualroute, queryprogram,
853 fallback_hosts, and "hosts" in the smtp transport.
854
855PH/22 If the log selector "outgoing_port" is set, the port is now also given on
856 host errors such as "Connection refused".
857
750af86e
PH
858PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
859 authentication with radiusclient 0.4.9:
860
861 - Error returned from rc_read_config was caught wrongly
862 - Username/password not passed on to radius server due to wrong length.
863
864 The presumption is that some radiusclient API changes for 4.51/PH/17
865 were not taken care of correctly. The code is still untested by me (my
866 Linux distribution still has 0.3.2 of radiusclient), but it was
867 contributed by a Radius user.
868
869PH/24 When doing a callout, the value of $domain wasn't set correctly when
870 expanding the "port" option of the smtp transport.
871
4304270b
TK
872TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
873 while reading a MIME header. Thanks to Tom Hughes for a patch.
874
750af86e
PH
875PH/24 Include config.h inside local_scan.h so that configuration settings are
876 available.
877
64ffc24f
PH
878PH/25 Make $smtp_command_argument available after all SMTP commands. This means
879 that in an ACL for RCPT (for example), you can examine exactly what was
880 received.
881
5dd9625b
PH
882PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
883 commands, but it was not correctly comparing the address with the actual
884 client host address. Thus, it would show the EHLO address in Received:
885 header lines when this was not necessary.
886
5591031b
PH
887PH/27 Added the % operator to ${eval:}.
888
ba18e66a
PH
889PH/28 Exim tries to create and chdir to its spool directory when it starts;
890 it should be ignoring failures (because with -C, for example, it has lost
891 privilege). It wasn't ignoring creation failures other than "already
892 exists".
893
9cec981f
PH
894PH/29 Added "crypteq" to the list of supported features that Exim outputs when
895 -bV or -d is used.
896
aa2b5c79
PH
897PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
898 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
899 too many continuations, the temporary file was not being removed, and the
900 return code was incorrect.
aa2b5c79 901
48a53b7f
PH
902PH/31 Missing "BOOL" in function definition in filtertest.c.
903
1c59d63b
PH
904PH/32 Applied Sieve patches from the maintainer.
905
671012da
TK
906TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
907
1509d3a8
PH
908PH/33 Added "verify = not_blind".
909
910PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
911 Local/Makefile (with some defaults set). These are used in built scripts
912 such as exicyclog, but they have never been used in the exim_install
913 script (though there are many overriding facilities there). I have
914 arranged that the exim_install script now takes note of these two
915 settings.
916
917PH/35 Installed configuration files for Dragonfly.
918
2fe1a124
PH
919PH/36 When a locally submitted message by a trusted user did not contain a
920 From: header, and the sender address was obtained from -f or from an SMTP
921 MAIL command, and the trusted user did not use -F to supply a sender
922 name, $originator_name was incorrectly used when constructing a From:
923 header. Furthermore, $originator_name was used for submission mode
924 messages from external hosts without From: headers in a similar way,
925 which is clearly wrong.
926
8800895a
PH
927PH/37 Added control=suppress_local_fixups.
928
ccfdb010
PH
929PH/38 When log_selector = +received_sender was set, and the addition of the
930 sender made the log line's construction buffer exactly full, or one byte
931 less than full, an overflow happened when the terminating "\n" was
932 subsequently added.
933
1130bfb0
PH
934PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
935 when the result of a list match is failure because a DNS lookup failed.
936
ebcb507f
PH
937PH/40 RM_COMMAND is now used in the building process.
938
c35e155c
PH
939PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
940 the "build-* directories that it finds.
941
95d1f782
PH
942PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
943 address in a domain literal was a prefix of an interface address.
944
fd6de02e
PH
945PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
946 when verifying a sender address, unless rewrite_headers is false.
947
58de37c5
PH
948PH/44 Wrote a long comment about why errors_to addresses are verified as
949 recipients, not senders.
950
261cf466
TF
951TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
952 the ratelimit ACL was added.
953
3ee512ff
PH
954PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
955
e08c430f
PH
956PH/46 Added extra information about PostgreSQL errors to the error string.
957
bef5a11f
PH
958PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
959 avoiding the need to install special zones in a real server. This is
960 backwards compatible; if it can't find the fake resolver, it drops back.
961 Thus, both old and new test suites can be run.
962
7546de58
TF
963TF/02 Added util/ratelimit.pl
964
e5d5a95f
TF
965TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
966 clock is set back in time.
967
2e88a017
TF
968TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
969 Candler <B.Candler@pobox.com>.
970
a5f65aa4
TF
971TF/05 The fix for PH/43 was not completely correct; widen_domains is always
972 OK for addresses that are the result of redirections.
973
e7726cbf
PH
974PH/48 A number of further additions for the benefit of the new test suite,
975 including a fake gethostbyname() that interfaces to the fake DNS resolver
976 (see PH/47 above).
977
a7fdad5b
TF
978TF/06 The fix for widen_domains has also been applied to qualify_single and
979 search_parents which are the other dnslookup options that can cause
980 header rewrites.
981
6af56900
PH
982PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
983 type ("H").
984
0925ede6
PH
985PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
986
66afa403
TF
987TF/07 Exim produced the error message "an SRV record indicated no SMTP
988 service" if it encountered an MX record with an empty target hostname.
989 The message is now "an MX or SRV record indicated no SMTP service".
990
0154e85a
TF
991TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
992 if the DNS of the sending site is misconfigured. This is quite a
993 common situation. This change restores the behaviour of treating a
994 helo verification defer as a failure.
995
16f12c76
PH
996PH/51 If self=fail was set on a router, the bounce message did not include the
997 actual error message.
998
bbe902f0 999
e5a9dba6
PH
1000Exim version 4.52
1001-----------------
1002
1003TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1004
22c3b60b
PH
1005PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1006 command itself ended in error, the underlying message about the transport
1007 filter timeout was being overwritten with the pipe command error. Now the
1008 underlying error message should be appended to the second error message.
1009
06a9b4b5
PH
1010TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1011
c1ac6996
PH
1012PH/02 Reduce the amount of output that "make" produces by default. Full output
1013 can still be requested.
1014
9c7a242c
PH
1015PH/03 The warning log line about a condition test deferring for a "warn" verb
1016 was being output only once per connection, rather than after each
1017 occurrence (because it was using the same function as for successful
1018 "warn" verbs). This seems wrong, so I have changed it.
1019
87ba3f5f
PH
1020TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1021 it should not have, which might have caused a crash in the right
1022 circumstances, but probably never did.
1023
1024PH/04 Installed a modified version of Tony Finch's patch to make submission
1025 mode fix the return path as well as the Sender: header line, and to
1026 add a /name= option so that you can make the user's friendly name appear
1027 in the header line.
1028
29aba418
TF
1029TF/03 Added the control = fakedefer ACL modifier.
1030
fe0dab11
TF
1031TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1032 Mark Lowes for thorough testing.
870f6ba8 1033
11d337a4
TK
1034TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1035
1036TK/03 Merged latest SRS patch from Miles Wilton.
1037
415c8f3b
PH
1038PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1039 with the definition in sysexits.h (which is #included earlier).
1040 Fortunately, Exim does not actually use EX_OK. The code used to try to
1041 preserve the sysexits.h value, by assumimg that macro definitions were
1042 scanned for macro replacements. I have been disabused of this notion,
1043 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1044
958541e9
PH
1045PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1046 in the smtp transport. When a block could not be written in a single
1047 write() function, the timeout was being re-applied to each part-write.
1048 This seems wrong - if the receiver was accepting one byte at a time it
1049 would take for ever. The timeout is now adjusted when this happens. It
1050 doesn't have to be particularly precise.
1051
c206415f
TK
1052TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1053 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1054
2a4be8f9
PH
1055PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1056 without a domain if the check to <postmaster@domain> fails.
1057
1cba11c5
SC
1058SC/01 Eximstats: added -xls and the ability to specify output files
1059 (patch written by Frank Heydlauf).
1060
1061SC/02 Eximstats: use FileHandles for outputing results.
1062
1063SC/03 Eximstats: allow any combination of xls, txt, and html output.
1064
1065SC/04 Eximstats: fixed display of large numbers with -nvr option
1066
1067SC/05 Eximstats: fixed merging of reports with empty tables.
1068
1069SC/06 Eximstats: added the -include_original_destination flag
1070
1071SC/07 Eximstats: removed tabs and trailing whitespace.
1072
1005d00e
TK
1073TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1074
1075TK/06 MBOX spool code: Add real "From " MBOX separator line
1076 so the .eml file is really in mbox format (even though
1077 most programs do not really care). Patch from Alex Miller.
1078
1079TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1080 The latter is generated from $received_to and is only set if the
1081 message has one envelope recipient. SA can use these headers,
1082 obviously out-of-the-box. Patch from Alex Miller.
1083
9b4768fa
PH
1084PH/08 The ${def test on a variable was returning false if the variable's
1085 value was "0", contrary to what the specification has always said!
1086 The result should be true unless the variable is empty.
1087
1088PH/09 The syntax error of a character other than { following "${if
1089 def:variable_name" (after optional whitespace) was not being diagnosed.
1090 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1091 accidental colon was present, for example, could give incorrect results.
1092
0d7eb84a
PH
1093PH/10 Tidied the code in a number of places where the st_size field of a stat()
1094 result is used (not including appendfile, where other changes are about
1095 to be made).
1096
1097PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1098 This involved changing a lot of size variables from int to off_t. It
1099 should work with maildirs and everything.
1100
40727bee
TK
1101TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1102 spamd dying while we are connected to it.
1103
554d2369
TF
1104TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1105 <jgh@wizmail.org>
1106
1f922db1
PH
1107PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1108 function for BDB 4.3.
1109
ef213c3b
PH
1110PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1111
8ac170f3
PH
1112PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1113 the sources for PCRE have been re-arranged and more files are now
1114 involved.
1115
b1c749bb
PH
1116PH/15 The code I had for printing potentially long long variables in PH/11
1117 above was not the best (it lost precision). The length of off_t variables
1118 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1119 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1120 to be "long long int" or "long int". This is needed for the internal
1121 formatting function string_vformat().
b1c749bb 1122
4aac9b49
PH
1123PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1124 the configuration file to be ":syslog", then the script "guesses" where
1125 the logs files are, rather than using the compiled in default. In our
1126 case the guess is not the same as the compiled default, so the script
1127 suddenly stopped working when I started to use syslog. The patch checks
1128 to see if log_file_path is "". If so, it attempts to read it from exim
1129 with no configuration file to get the compiled in version, before it
1130 falls back to the previous guessing code."
1131
294520c8
TK
1132TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1133 implementing BATV in an Exim configuration. See NewStuff for the gory
1134 details.
1135
5bd022fe
PH
1136PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1137 Makefile that are specific to HP-UX.
1138
90e9ce59
PH
1139PH/18 If the "use_postmaster" option was set for a recipient callout together
1140 with the "random" option, the postmaster address was used as the MAIL
1141 FROM address for the random test, but not for the subsequent recipient
1142 test. It is now used for both.
1143
5ea81592
PH
1144PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1145 patch removes a few documentation additions to RFC 3028, because the
1146 latest draft now contains them. It adds the new en;ascii-case comparator
1147 and a new error check for 8bit text in MIME parts. Comparator and
1148 require names are now matched exactly. I enabled the subaddress
1149 extension, but it is not well tested yet (read: it works for me)."
1150
c6c2dc1d
PH
1151PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1152 rework some of the code of TK/09 above to avoid the hardwired use of
1153 "%lld" and "long long". Replaced the call to snprintf() with a call to
1154 string_vformat().
1155
fffffe4c
PH
1156PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1157 records point to non-existent hosts", "retry timeout exceeded", and
1158 "retry time not reached for any host after a long failure period".
ca02eafb 1159
9a26b6b2
PH
1160PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1161 experimental DomainKeys support:
1162
1163 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1164 (2) On an error such as an illegally used "control", the wrong name for
1165 the control was given.
1166
1167 These problems did NOT occur unless DomainKeys support was compiled.
1168
4aee0225
PH
1169PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1170
32d668a5
PH
1171PH/24 Added ${if match_ip condition.
1172
8187c3f3
PH
1173PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1174 databases so that it will be absolutely obvious if a crash occurs in the
1175 DB library. This is a regular occurrence (often caused by mis-matched
1176 db.h files).
1177
ff790e47 1178PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1179 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1180 picked up on a user's system that detects such things. There doesn't seem
1181 to be a gcc warning option for this - only an attribute that has to be
1182 put on the function's prototype. It seems that in Fedora Core 4 they have
1183 set this on a number of new functions. No doubt there will be more in due
1184 course.
ff790e47 1185
5417f6d1
PH
1186PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1187 specify a transport. However, if an address that was verified by such a
1188 router was the subject of a callout, Exim crashed because it tried to
1189 read the rcpt_include_affixes from the non-existent transport. Now it
1190 just assumes that the setting of that option is false. This bug was
1191 introduced by 4.51/PH/31.
1192
59cf8544
PH
1193PH/28 Changed -d+all to exclude +memory, because that information is very
1194 rarely of interest, but it makes the output a lot bigger. People tend to
1195 do -d+all out of habit.
1196
e7ad8a65
PH
1197PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1198 code in os-type was giving problems when libc.so lives in lib64, like on
1199 x86_64 Fedora Core.
1200
ade42478
PH
1201PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1202 aren't the modern standard, and it seems that some systems' include files
1203 don't always have them. Exim was already checking for some of the newer
1204 ones like T_AAAA, and defining it itself. I've added checks for all the
1205 record types that Exim uses.
1206
182ad5cf
PH
1207PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1208 not automatically generating a new one, as it is supposed to. This
1209 prevented TLS from working. If the file did exist, but contained invalid
1210 data, a new version was generated, as expected. It was only the case of a
1211 non-existent file that was broken.
1212
b0d9fc80
TK
1213TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1214 with a change in libdomainkeys > 0.64.
1215
1216TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1217 from DNS. If the selector record carries the flag, it now has
1218 precedence over the domain-wide flag.
1219
1220TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1221
47c7a64a
PH
1222PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1223 the use of a port name that isn't defined in /etc/services) occurred, the
1224 message was deferred as in a normal delivery, and thus remained on the
1225 spool, instead of being failed because of the mua_wrapper setting. This
1226 is now fixed, and I tidied up some of the mua_wrapper messages at the
1227 same time.
1228
a388bce4
SC
1229SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1230 the messages in a hash of arrays rather than using individual hashes.
1231 This is a bit cleaner and results in dramatic memory savings, albeit
1232 at a slight CPU cost.
1233
1234SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1235 as requested by Marc Sherman.
1236
1237SC/10 Eximstats: added histograms for user specified patterns as requested
1238 by Marc Sherman.
1239
0793e4ed
SC
1240SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1241
c58b88df
PH
1242PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1243 fopen() in the content-scanning modules that did not already have it.
1244
e7ad8a65 1245
7982096b
PH
1246Exim version 4.51
1247-----------------
1248
1a46a8c5
PH
1249TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1250 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1251
2f079f46 1252TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1253
1254TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1255
1256PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1257 to test Sieve filters that use "vacation".
1258
1259PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1260 that changes the way the GnuTLS parameters are stored in the cache file.
1261 The new format can be generated externally. For backward compatibility,
1262 if the data in the cache doesn't make sense, Exim assumes it has read an
1263 old-format file, and it generates new data and writes a new file. This
1264 means that you can't go back to an older release without removing the
1265 file.
1266
1267PH/03 A redirect router that has both "unseen" and "one_time" set does not
1268 work if there are any delivery delays because "one_time" forces the
1269 parent to be marked "delivered", so its unseen clone is never tried
1270 again. For this reason, Exim now forbids the simultaneous setting of
1271 these two options.
1272
1273PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1274 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1275 entry if you want to know the details. The fix, however, neglected to
1276 consider the case when local delivery batching is involved. The test for
1277 "previously delivered" was not happening when checking to see if an
1278 address could be batched with a previous (undelivered) one; under
1279 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1280 address.
1a46a8c5
PH
1281
1282PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1283 in its include files, and this causes problems building Exim.
1284
1285PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1286 header_syntax) but Exim was just ignoring anything given after a slash.
1287 In particular, this caused confusion with an attempt to use "verify =
1288 reverse_host_lookup/defer_ok". An error is now given when options are
1289 supplied for verify items that do not have them. (Maybe reverse_host_
1290 lookup should have a defer_ok option, but that's a different point.)
1291
1292PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1293 defined by RFC 821) to 2048, because there were problems with some AUTH
1294 commands, and RFC 1869 says the size should be increased for extended
1295 SMTP commands that take arguments.
1296
1297PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1298 Finch).
1299
1300PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1301 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1302
49c2d5ea
PH
1303PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1304 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1305 whatever). Otherwise the password may appear in the log. Following change
1306 PH/42 below, there is no longer a chance of it appearing in a bounce
1307 message.
49c2d5ea 1308
bf759a8b
PH
1309PH/11 Installed exipick version 20050225.0 from John Jetmore.
1310
83364d30
PH
1311PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1312 of its addresses was ever tried. (Bugzilla bug #2.)
1313
7999bbd7
PH
1314PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1315 the result incorrectly in the debug output. (It correctly added a newline
1316 to what was transported.)
1317
7dbf77c9
PH
1318TF/01 Added $received_time.
1319
74e0617f
PH
1320PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1321 commented out examples of how to interface to a virus scanner and to
1322 SpamAssassin. Also added commented examples of av_scanner and
1323 spamd_address settings.
1324
2f079f46
PH
1325PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1326 and controls are allowed in which ACLs. There were a couple of minor
1327 errors. Some of the entries in the conditions table (which is a table of
1328 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1329 negation of where the condition IS allowed.
1330
8c841523
PH
1331PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1332
7766a4f0
PH
1333PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1334 header file does not have a version number, so I've had to invent a new
1335 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1336 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1337 radiusclient), but it was contributed by a Radius user.
1338
8b417f2c
PH
1339PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1340 files or directories, for OpenSSL.
1341
901f42cb
PH
1342PH/19 When an Exim process that is running as root has to create an Exim log
1343 file, it does so in a subprocess that runs as exim:exim so as to get the
1344 ownership right at creation (otherwise, other Exim processes might see
1345 the file with the wrong ownership). There was no test for failure of this
1346 fork() call, which would lead to the process getting stuck as it waited
1347 for a non-existent subprocess. Forks do occasionally fail when resources
1348 run out. I reviewed all the other calls to fork(); they all seem to check
1349 for failure.
1350
f9b9210e
PH
1351PH/20 When checking for unexpected SMTP input at connect time (before writing
1352 the banner), Exim was not dealing correctly with a non-positive return
1353 from the read() function. If the client had disconnected by this time,
1354 the result was a log entry for a synchronization error with an empty
1355 string after "input=" when read() returned zero. If read() returned -1
1356 (an event I could not check), uninitialized data bytes were printed.
1357 There were reports of junk text (parts of files, etc) appearing after
1358 "input=".
1359
54cdb463
PH
1360PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1361
cf00dad6
PH
1362PH/22 Added support for macro redefinition, and (re)definition in between
1363 driver and ACL definitions.
1364
acb1b346
PH
1365PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1366 forgetting to use the resulting value; it was using the unexpanded value.
1367
c5ddb310
PH
1368PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1369 hadn't been configured. The fix is from Juergen Kreileder, who
1370 understands it better than I do:
1371
1372 "Here's what I see happening with three configured cyrus_sasl
1373 authenticators configured (plain, login, cram-md5):
1374
1375 On startup auth_cyrus_sasl_init() gets called for each of these.
1376 This means three calls to sasl_listmech() without a specified mech_list.
1377 => SASL tests which mechs of all available mechs actually work
1378 => three warnings about OTP not working
1379 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1380
1381 With the patch, sasl_listmech() also gets called three times. But now
1382 SASL's mech_list option is set to the server_mech specified in the the
1383 authenticator. Or in other words, the answer from sasl_listmech()
1384 gets limited to just the mech you're testing for (which is different
1385 for each call.)
1386 => the return list contains just 'plain' or 'login', 'cram-md5' or
1387 nothing depending on the value of ob->server_mech.
1388
1389 I've just tested the patch: Authentication still works fine,
1390 unavailable mechs specified in the exim configuration are still
1391 caught, and the auth.log warnings about OTP are gone."
1392
31619da6
PH
1393PH/25 When debugging is enabled, the contents of the command line are added
1394 to the debugging output, even when log_selector=+arguments is not
1395 specified.
1396
bebaf0fc
PH
1397PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1398 answer is "GNU", and only if the return is "GNU/something" is the answer
1399 "Linux".
1400
475fe28a
PH
1401PH/27 $acl_verify_message is now set immediately after the failure of a
1402 verification in an ACL, and so is available in subsequent modifiers. In
1403 particular, the message can be preserved by coding like this:
1404
1405 warn !verify = sender
1406 set acl_m0 = $acl_verify_message
1407
1408 Previously, $acl_verify_message was set only while expanding "message"
1409 and "log_message" when a very denied access.
1410
7e8bec7a
PH
1411PH/28 Modified OS/os.c-Linux with
1412
1413 -#ifndef OS_LOAD_AVERAGE
1414 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1415
1416 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1417 nomenclature these days.)
1418
e4a89c47
PH
1419PH/29 Installed patch from the Sieve maintainer that adds the options
1420 sieve_useraddress and sieve_subaddress to the redirect router.
1421
5ca2a9a1
PH
1422PH/30 In these circumstances:
1423 . Two addresses routed to the same list of hosts;
1424 . First host does not offer TLS;
1425 . First host accepts first address;
1426 . First host gives temporary error to second address;
1427 . Second host offers TLS and a TLS session is established;
1428 . Second host accepts second address.
1429 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1430 and peerdn, if requested) that were in fact used only for the second
1431 address.
7e8bec7a 1432
c688b954
PH
1433PH/31 When doing a callout as part of verifying an address, Exim was not paying
1434 attention to any local part prefix or suffix that was matched by the
1435 router that accepted the address. It now behaves in the same way as it
1436 does for delivery: the affixes are removed from the local part unless
1437 rcpt_include_affixes is set on the transport.
1438
fed77020
PH
1439PH/32 Add the sender address, as F=<...>, to the log line when logging a
1440 timeout during the DATA phase of an incoming message.
1441
7fe1560f
PH
1442PH/33 Sieve envelope tests were broken for match types other than :is. I have
1443 applied a patch sanctioned by the Sieve maintainer.
c688b954 1444
ebb6e6d5
PH
1445PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1446 the uid or gid is negative. A case of a negative gid caused this to be
1447 noticed. The fix allows for either to be negative.
1448
9c4e8f60
PH
1449PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1450 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1451 overlooked.
1452
1453PH/36 The change PH/12 above was broken. Fixed it.
1454
d7174846
PH
1455PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1456 the grounds that routing the same address twice would always produce the
1457 same answer. This might have been true once, but it is certainly no
1458 longer true now. Routing a child address may depend on the previous
1459 routing that produced that child. Some complicated redirection strategies
1460 went wrong when messages had multiple recipients, and made Exim's
1461 behaviour dependent on the order in which the addresses were given.
1462
1463 I have moved the duplicate checking until after the routing is complete.
1464 Exim scans the addresses that are assigned to local and remote
1465 transports, and removes any duplicates. This means that more work will be
1466 done, as duplicates will always all be routed, but duplicates are
1467 presumably rare, so I don't expect this is of any significance.
1468
1469 For deliveries to pipes, files, and autoreplies, the duplicate checking
1470 still happens during the routing process, since they are not going to be
1471 routed further.
1472
cfe75fc3
PH
1473PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1474 It corrects a timeout issue with spamd. This is Ian's comment: "The
1475 background is that sometimes spamd either never reads data from a
1476 connection it has accepted, or it never writes response data. The exiscan
1477 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1478 blindly assumes that writes won't block so it may never time out."
1479
be22d70e
PH
1480PH/39 Allow G after quota size as well as K and M.
1481
0612b098
PH
1482PH/40 The value set for $authenticated_id in an authenticator may not contain
1483 binary zeroes or newlines because the value is written to log lines and
1484 to spool files. There was no check on this. Now the value is run through
1485 the string_printing() function so that such characters are converted to
1486 printable escape sequences.
1487
2e0c1448
PH
1488PH/41 $message_linecount is a new variable that contains the total number of
1489 lines in the message. Compare $body_linecount, which is the count for the
1490 body only.
1491
447d236c
PH
1492PH/42 Exim no longer gives details of delivery errors for specific addresses in
1493 bounce and delay warning messages, except in certain special cases, which
1494 are as follows:
1495
1496 (a) An SMTP error message from a remote host;
1497 (b) A message specified in a :fail: redirection;
1498 (c) A message specified in a "fail" command in a system filter;
1499 (d) A message specified in a FAIL return from the queryprogram router;
1500 (e) A message specified by the cannot_route_message router option.
1501
1502 In these cases only, Exim does include the error details in bounce and
1503 warning messages. There are also a few cases where bland messages such
1504 as "unrouteable address" or "local delivery error" are given.
1505
d20976dc
PH
1506PH/43 $value is now also set for the "else" part of a ${run expansion.
1507
f656d135
PH
1508PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1509 being worked on, but at least Exim now implements the latest version to
1510 play with."
1511
2e2a30b4
PH
1512PH/45 In a pipe transport, although a timeout while waiting for the pipe
1513 process to complete was treated as a delivery failure, a timeout while
1514 writing the message to the pipe was logged, but erroneously treated as a
1515 successful delivery. Such timeouts include transport filter timeouts. For
1516 consistency with the overall process timeout, these timeouts are now
1517 treated as errors, giving rise to delivery failures by default. However,
1518 there is now a new Boolean option for the pipe transport called
1519 timeout_defer, which, if set TRUE, converts the failures into defers for
1520 both kinds of timeout. A transport filter timeout is now identified in
1521 the log output.
1522
9176e9f0
PH
1523PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1524 systems where "make" and "gmake" are different, calling "gmake" at top
1525 level broke things. I've arranged for the value of $(MAKE) to be passed
1526 from the Makefile to this script so that it can call the same version of
1527 "make".
1528
7982096b 1529
bbe902f0
PH
1530A note about Exim versions 4.44 and 4.50
1531----------------------------------------
1532
1533Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1534changes of various kinds. As a consequence, a big documentation update was
1535needed. This delayed the release for rather longer than seemed good, especially
1536in the light of a couple of (minor) security issues. Therefore, the changes
1537that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1538release. So 4.44 and 4.50 are in effect two different branches that both start
1539from 4.43.
1540
1541I have left the 4.50 change log unchanged; it contains all the changes since
15424.43. The change log for 4.44 is below; many of its items are identical to
1543those for 4.50. This seems to be the most sensible way to preserve the
1544historical information.
1545
1546
f7b63901 1547Exim version 4.50
495ae4b0
PH
1548-----------------
1549
5fe762f6
PH
1550 1. Minor wording change to the doc/README.SIEVE file.
1551
139059f6 1552 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1553 computation of the current number of files was incorrect.
495ae4b0 1554
7086e875
PH
1555 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1556 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1557 place.
1558
35af9f61
PH
1559 4. Give more explanation in the error message when the command for a transport
1560 filter fails to execute.
1561
b668c215
PH
1562 5. There are several places where Exim runs a non-Exim command in a
1563 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1564 was being done only for the command run by the queryprogram router. It is
1565 now done for all such subprocesses. The other cases are: ${run, transport
1566 filters, and the commands run by the lmtp and pipe transports.
1567
a494b1e1
PH
1568 6. Added CONFIGURE_GROUP build-time option.
1569
1570 7. Some older OS have a limit of 256 on the maximum number of file
1571 descriptors. Exim was using setrlimit() to set 1000 as a large value
1572 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1573 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1574
c5fcb476
PH
1575 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1576 was an oversight, and furthermore, ever since the addition of extra
1577 controls (e.g. 4.43/32), the checks on when to allow different forms of
1578 "control" were broken. There should now be diagnostics for all cases when a
1579 control that does not make sense is encountered.
1580
69358f02
PH
1581 9. Added the /retain_sender option to "control=submission".
1582
5be20824
PH
158310. $recipients is now available in the predata ACL (oversight).
1584
eb2c0248
PH
158511. Tidy the search cache before the fork to do a delivery from a message
1586 received from the command line. Otherwise the child will trigger a lookup
1587 failure and thereby defer the delivery if it tries to use (for example) a
1588 cached ldap connection that the parent has called unbind on.
1589
2a3eea10
PH
159012. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1591 of $address_data from the recipient verification was clobbered by the
1592 sender verification.
1593
159413. The value of address_data from a sender verification is now available in
1595 $sender_address_data in subsequent conditions in the ACL statement.
1596
23c7ff99
PH
159714. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1598
4deaf07d
PH
159915. Added a new option "connect=<time>" to callout options, to set a different
1600 connection timeout.
1601
926e1192
PH
160216. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1603 was its contents. (It was OK if the option was not defined at all.)
1604
650edc6f
PH
160517. A "Completed" log line is now written for messages that are removed from
1606 the spool by the -Mrm option.
1607
2c7db3f5
PH
160818. New variables $sender_verify_failure and $recipient_verify_failure contain
1609 information about exactly what failed.
1610
3d235903
PH
161119. Added -dd to debug only the daemon process.
1612
7c7ad977
PH
161320. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1614 handles timeouts, both on the server side and network timeouts. Renamed the
1615 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1616
981756db
PH
161721. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1618 It is now set to "smtps".
1619
d4eb88df
PH
162022. $host_address is now set to the target address during the checking of
1621 ignore_target_hosts.
1622
162323. When checking ignore_target_hosts for an ipliteral router, no host name was
1624 being passed; this would have caused $sender_host_name to have been used if
1625 matching the list had actually called for a host name (not very likely,
1626 since this list is usually IP addresses). A host name is now passed as
1627 "[x.x.x.x]".
1628
7d468ab8
PH
162924. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1630 code that specifies a non-restarting handler (typically sigaction() in
1631 modern systems) in an attempt to fix a rare and obscure crash bug.
1632
163325. Narrowed the window for a race in the daemon that could cause it to ignore
1634 SIGCHLD signals. This is not a major problem, because they are used only to
1635 wake it up if nothing else does.
1636
62c0818f
PH
163726. A malformed maildirsize file could cause Exim to calculate negative values
1638 for the mailbox size or file count. Odd effects could occur as a result.
1639 The maildirsize information is now recalculated if the size or filecount
1640 end up negative.
1641
26034054
PH
164227. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1643 support for a long time. Removed HAVE_SYS_VFS_H.
1644
af66f652
PH
164528. Installed the latest version of exipick from John Jetmore.
1646
90af77f4
PH
164729. In an address list, if the pattern was not a regular expression, an empty
1648 subject address (from a bounce message) matched only if the pattern was an
1649 empty string. Non-empty patterns were not even tested. This was the wrong
1650 because it is perfectly reasonable to use an empty address as part of a
1651 database query. An empty address is now tested by patterns that are
1652 lookups. However, all the other forms of pattern expect the subject to
1653 contain a local part and a domain, and therefore, for them, an empty
1654 address still always fails if the pattern is not itself empty.
1655
d8ef3577
PH
165630. Exim went into a mad DNS loop when attempting to do a callout where the
1657 host was specified on an smtp transport, and looking it up yielded more
1658 than one IP address.
1659
5cb8cbc6
PH
166031. Re-factored the code for checking spool and log partition space into a
1661 function that finds that data and another that does the check. The former
1662 is then used to implement four new variables: $spool_space, $log_space,
1663 $spool_inodes, and $log_inodes.
1664
14702f5b
PH
166532. The RFC2047 encoding function was originally intended for short strings
1666 such as real names; it was not keeping to the 75-character limit for
1667 encoded words that the RFC imposes. It now respects the limit, and
1668 generates multiple encoded words if necessary. To be on the safe side, I
1669 have increased the buffer size for the ${rfc2047: expansion operator from
1670 1024 to 2048 bytes.
1671
063b1e99
PH
167233. It is now permitted to omit both strings after an "if" condition; if the
1673 condition is true, the result is "true". As before, when the second string
1674 is omitted, a false condition yields an empty string. This makes it less
1675 cumbersome to write custom ACL and router conditions.
1676
652e1b65
PH
167734. Failure to deliver a bounce message always caused it to be frozen, even if
1678 there was an errors_to setting on the router. The errors_to setting is now
1679 respected.
1680
6f0c9a4f
PH
168135. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1682 canonical form (fully expanded) before being placed in
1683 $sender_host_address.
1684
33397d19
PH
168536. The table in the code that translates DNS record types into text (T_A to
1686 "A" for instance) was missing entries for NS and CNAME. It is just possible
1687 that this could have caused confusion if both these types were looked up
1688 for the same domain, because the text type is used as part of Exim's
1689 per-process caching. But the chance of anyone hitting this buglet seems
1690 very small.
1691
7bb56e1f
PH
169237. The dnsdb lookup has been extended in a number of ways.
1693
1694 (1) There is a new type, "zns", which walks up the domain tree until it
1695 finds some nameserver records. It should be used with care.
1696
ea3bc19b
PH
1697 (2) There is a new type, "mxh", which is like "mx" except that it returns
1698 just the host names, not the priorities.
1699
1700 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1701 looked up. The behaviour when one of the lookups defers can be
1702 controlled by a keyword.
7bb56e1f 1703
ea3bc19b 1704 (4) It is now possible to specify the separator character for use when
7bb56e1f 1705 multiple records are returned.
33397d19 1706
0bcb2a0e
PH
170738. The dnslists ACL condition has been extended: it is now possible to supply
1708 a list of IP addresses and/or domains to be looked up in a particular DNS
1709 domain.
1710
2ac0e484
PH
171139. Added log_selector=+queue_time_overall.
1712
4e1fde53
PH
171340. When running the queue in the test harness, wait just a tad after forking a
1714 delivery process, to get repeatability of debugging output.
1715
de365ded
PH
171641. Include certificate and key file names in error message when GnuTLS fails
1717 to set them up, because the GnuTLS error message doesn't include the name
1718 of the failing file when there is a problem reading it.
1719
f05da2e8
PH
172042. Allow both -bf and -bF in the same test run.
1721
d6453af2
PH
172243. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1723
f7b63901
PH
172444. The "Exiscan patch" is now merged into the mainline Exim source.
1725
172645. Sometimes the final signoff response after QUIT could fail to get
1727 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1728 < 0 before doing a fflush(). This bug looks as though it goes back to the
1729 introduction of TLS in release 3.20, but "sometimes" must have been rare
1730 because the tests only now provoked it.
1731
a444213a
PH
173246. Reset the locale to "C" after calling embedded Perl, in case it was changed
1733 (this can affect the format of dates).
1734
0ec020ea
PH
173547. exim_tidydb, when checking for the continued existence of a message for
1736 which it has found a message-specific retry record, was not finding
1737 messages that were in split spool directories. Consequently, it was
1738 deleting retry records that should have stayed in existence.
1739
b1206957
PH
174048. Steve fixed some bugs in eximstats.
1741
174249. The SPA authentication driver was not abandoning authentication and moving
1743 on to the next authenticator when an expansion was forced to fail,
1744 contradicting the general specification for all authenticators. Instead it
1745 was generating a temporary error. It now behaves as specified.
1746
26dd5a95
PH
174750. The default ordering of permitted cipher suites for GnuTLS was pessimal
1748 (the order specifies the preference for clients). The order is now AES256,
1749 AES128, 3DES, ARCFOUR128.
1750
343b2385
PH
175151. Small patch to Sieve code - explicitly set From: when generating an
1752 autoreply.
1753
1c5466b9
PH
175452. Exim crashed if a remote delivery caused a very long error message to be
1755 recorded - for instance if somebody sent an entire SpamAssassin report back
1756 as a large number of 550 error lines. This bug was coincidentally fixed by
1757 increasing the size of one of Exim's internal buffers (big_buffer) that
1758 happened as part of the Exiscan merge. However, to be on the safe side, I
1759 have made the code more robust (and fixed the comments that describe what
1760 is going on).
1761
55ee9ee3
PH
176253. Now that there can be additional text after "Completed" in log lines (if
1763 the queue_time_overall log selector is set), a one-byte patch to exigrep
1764 was needed to allow it to recognize "Completed" as not the last thing in
1765 the line.
1766
d38f8232
PH
176754. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1768 patch that reportedly fixes this has been added. I am not expert enough to
1769 create a test for it. This is what the patch creator wrote:
1770
1771 "I found a little strange behaviour of ldap code when working with
1772 Windows 2003 AD Domain, where users was placed in more than one
1773 Organization Units. When I tried to give exim partial DN, the exit code
1774 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1775 But simultaneously result of request was absolutely normal ldap result,
1776 so I produce this patch..."
1777
3295e65b
PH
1778 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1779 REFERENCE, so I have modified the code to exclude the patch when that macro
1780 is not defined.
1781
7102e136
PH
178255. Some experimental protocols are using DNS PTR records for new purposes. The
1783 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1784 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1785 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1786 CAN-2005-0021
7102e136 1787
3ca0ba97
PH
178856. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1789
c2bcbe20
PH
179057. Double the size of the debug message buffer (to 2048) so that more of very
1791 long debug lines gets shown.
1792
18ce445d
PH
179358. The exicyclog utility now does better if the number of log files to keep
1794 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1795
1f5b4c3d
PH
179659. Two changes related to the smtp_active_hostname option:
1797
1798 (1) $smtp_active_hostname is now available as a variable.
1799 (2) The default for smtp_banner uses $smtp_active_hostname instead
1800 of $primary_hostname.
1801
b975ba52
PH
180260. The host_aton() function is supposed to be passed a string that is known
1803 to be a valid IP address. However, in the case of IPv6 addresses, it was
1804 not checking this. This is a hostage to fortune. Exim now panics and dies
1805 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1806 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1807 components; fortuitously, this particular loophole had already been fixed
1808 by change 4.50/55 above.
1809
1810 If there are any other similar loopholes, the new check in host_aton()
1811 itself should stop them being exploited. The report I received stated that
1812 data on the command line could provoke the exploit when Exim was running as
1813 exim, but did not say which command line option was involved. All I could
1814 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1815 running as the user.
ea3a6f44 1816 CAN-2005-0021
85b87bc2
PH
1817
181861. There was a buffer overflow vulnerability in the SPA authentication code
1819 (which came originally from the Samba project). I have added a test to the
1820 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1821 CAN-2005-0022
b975ba52 1822
17ffcae7
PH
182362. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1824 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1825
d95f9fdb
PH
182663. The daemon start-up calls getloadavg() while still root for those OS that
1827 need the first call to be done as root, but it missed one case: when
1828 deliver_queue_load_max is set with deliver_drop_privilege. This is
1829 necessary for the benefit of the queue runner, because there is no re-exec
1830 when deliver_drop_privilege is set.
1831
86b8287f
PH
183264. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1833 This has been fixed.
1834
60dc5e56
PH
183565. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1836 was in use, was not putting the data itself into the right store pool;
1837 consequently, it could be overwritten for a subsequent message in the same
1838 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1839 the caching.)
1840
533244af
PH
184166. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1842
a5a28604
PH
184367. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1844 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1845 the function were treating the return as a boolean value, which happened to
1846 work because 0=false and not-0=true, but is not correct code.
1847
7e634d24
PH
184868. The host_aton() function was not handling scoped IPv6 addresses (those
1849 with, for example, "%eth0" on the end) correctly.
1850
3e11c26b
PH
185169. Fixed some compiler warnings in acl.c for the bitmaps specified with
1852 negated items (that is, ~something) in unsigned ints. Some compilers
1853 apparently mutter when there is no cast.
1854
6729cf78
PH
185570. If an address verification called from an ACL failed, and did not produce a
1856 user-specific message (i.e. there was only a "system" message), nothing was
1857 put in $acl_verify_message. In this situation, it now puts the system
1858 message there.
1859
00f00ca5
PH
186071. Change 4.23/11 added synchronization checking at the start of an SMTP
1861 session; change 4.31/43 added the unwanted input to the log line - except
1862 that it did not do this in the start of session case. It now does.
1863
c9bdd01c
PH
186472. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1865 This is wrong and can cause the other end to generate a synchronization
1866 error if it is another Exim or anything else that does the synchronization
1867 check. A QUIT command is no longer sent after a timeout.
1868
d43194df
PH
186973. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1870 during host lookups.
1871
fe5b5d0b
PH
187274. The defer_ok option of callout verification was not working if it was used
1873 when verifying addresses in header lines, that is, for this case:
1874
1875 verify = header_sender/callout=defer_ok
1876
76a2d7ba
PH
187775. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1878 those file descriptors could be used for SMTP connections. If anything
1879 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1880 could be sent to the SMTP client, causing chaos. The daemon now opens
1881 stdin, stdout, and stderr to /dev/null when it puts itself into the
1882 background.
1883
188476. Arrange for output from Perl's "warn" command to be written to Exim's main
1885 log by default. The user can override this with suitable Perl magic.
1886
04f7d5b9
PH
188777. The use of log_message on a "discard" ACL verb, which is supposed to add to
1888 the log message when discard triggers, was not working for the DATA ACL or
1889 for the non-SMTP ACL.
1890
bc60667e
PH
189178. Error message wording change in sieve.c.
1892
bb6e88ff
PH
189379. If smtp_accept_max_per_host was set, the number of connections could be
1894 restricted to fewer than expected, because the daemon was trying to set up
1895 a new connection before checking whether the processes handling previous
1896 connections had finished. The check for completed processes is now done
1897 earlier. On busy systems, this bug wouldn't be noticed because something
1898 else would have woken the daemon, and it would have reaped the completed
1899 process earlier.
1900
1e70f85b
PH
190180. If a message was submitted locally by a user whose login name contained one
1902 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1903 It caused a spool format error. I have fixed the spool reading code. A
1904 related problem was that the "from" clause in the Received: line became
1905 illegal because of the space(s). It is now covered by ${quote_local_part.
1906
190781. Included the latest eximstats from Steve (adds average sizes to HTML Top
1908 tables).
1909
4e01f9d6
PH
191082. Updated OS/Makefile-AIX as per message from Mike Meredith.
1911
1ee1cef2
PH
191283. Patch from Sieve maintainer to fix unterminated string problem in
1913 "vacation" handling.
1914
6e2b4ccc
PH
191584. Some minor changes to the Linux configuration files to help with other
1916 OS variants using glibc.
1917
8e669ac1
PH
191885. One more patch for Sieve to update vacation handling to latest spec.
1919
495ae4b0 1920
bbe902f0
PH
1921----------------------------------------------------
1922See the note above about the 4.44 and 4.50 releases.
1923----------------------------------------------------
1924
1925
1926Exim version 4.44
1927-----------------
1928
1929 1. Change 4.43/35 introduced a bug that caused file counts to be
1930 incorrectly computed when quota_filecount was set in an appendfile
1931 transport
1932
1933 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1934 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1935 place.
1936
1937 3. Give more explanation in the error message when the command for a transport
1938 filter fails to execute.
1939
1940 4. There are several places where Exim runs a non-Exim command in a
1941 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1942 was being done only for the command run by the queryprogram router. It is
1943 now done for all such subprocesses. The other cases are: ${run, transport
1944 filters, and the commands run by the lmtp and pipe transports.
1945
1946 5. Some older OS have a limit of 256 on the maximum number of file
1947 descriptors. Exim was using setrlimit() to set 1000 as a large value
1948 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1949 systems. I've change it so that if it can't get 1000, it tries for 256.
1950
1951 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1952 was an oversight, and furthermore, ever since the addition of extra
1953 controls (e.g. 4.43/32), the checks on when to allow different forms of
1954 "control" were broken. There should now be diagnostics for all cases when a
1955 control that does not make sense is encountered.
1956
1957 7. $recipients is now available in the predata ACL (oversight).
1958
1959 8. Tidy the search cache before the fork to do a delivery from a message
1960 received from the command line. Otherwise the child will trigger a lookup
1961 failure and thereby defer the delivery if it tries to use (for example) a
1962 cached ldap connection that the parent has called unbind on.
1963
1964 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1965 of $address_data from the recipient verification was clobbered by the
1966 sender verification.
1967
196810. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1969 was its contents. (It was OK if the option was not defined at all.)
1970
197111. A "Completed" log line is now written for messages that are removed from
1972 the spool by the -Mrm option.
1973
197412. $host_address is now set to the target address during the checking of
1975 ignore_target_hosts.
1976
197713. When checking ignore_target_hosts for an ipliteral router, no host name was
1978 being passed; this would have caused $sender_host_name to have been used if
1979 matching the list had actually called for a host name (not very likely,
1980 since this list is usually IP addresses). A host name is now passed as
1981 "[x.x.x.x]".
1982
198314. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1984 code that specifies a non-restarting handler (typically sigaction() in
1985 modern systems) in an attempt to fix a rare and obscure crash bug.
1986
198715. Narrowed the window for a race in the daemon that could cause it to ignore
1988 SIGCHLD signals. This is not a major problem, because they are used only to
1989 wake it up if nothing else does.
1990
199116. A malformed maildirsize file could cause Exim to calculate negative values
1992 for the mailbox size or file count. Odd effects could occur as a result.
1993 The maildirsize information is now recalculated if the size or filecount
1994 end up negative.
1995
199617. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1997 support for a long time. Removed HAVE_SYS_VFS_H.
1998
ea3a6f44 199918. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2000
200119. Allow an empty sender to be matched against a lookup in an address list.
2002 Previously the only cases considered were a regular expression, or an
2003 empty pattern.
2004
200520. Exim went into a mad DNS lookup loop when doing a callout where the
2006 host was specified on the transport, if the DNS lookup yielded more than
2007 one IP address.
2008
ea3a6f44
NM
200921. The RFC2047 encoding function was originally intended for short strings
2010 such as real names; it was not keeping to the 75-character limit for
2011 encoded words that the RFC imposes. It now respects the limit, and
2012 generates multiple encoded words if necessary. To be on the safe side, I
2013 have increased the buffer size for the ${rfc2047: expansion operator from
2014 1024 to 2048 bytes.
bbe902f0 2015
ea3a6f44
NM
201622. Failure to deliver a bounce message always caused it to be frozen, even if
2017 there was an errors_to setting on the router. The errors_to setting is now
2018 respected.
bbe902f0
PH
2019
202023. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2021 canonical form (fully expanded) before being placed in
2022 $sender_host_address.
2023
202424. Updated eximstats to version 1.33
2025
ea3a6f44
NM
202625. Include certificate and key file names in error message when GnuTLS fails
2027 to set them up, because the GnuTLS error message doesn't include the name
2028 of the failing file when there is a problem reading it.
bbe902f0
PH
2029
203026. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2031 As per change 25.
bbe902f0 2032
ea3a6f44
NM
203327. Reset the locale to "C" after calling embedded Perl, in case it was changed
2034 (this can affect the format of dates).
bbe902f0 2035
ea3a6f44
NM
203628. exim_tidydb, when checking for the continued existence of a message for
2037 which it has found a message-specific retry record, was not finding
2038 messages that were in split spool directories. Consequently, it was
2039 deleting retry records that should have stayed in existence.
bbe902f0
PH
2040
204129. eximstats updated to version 1.35
2042 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2043 1.35 - bugfix such that pie charts by volume are generated correctly
2044
ea3a6f44
NM
204530. The SPA authentication driver was not abandoning authentication and moving
2046 on to the next authenticator when an expansion was forced to fail,
2047 contradicting the general specification for all authenticators. Instead it
2048 was generating a temporary error. It now behaves as specified.
bbe902f0 2049
ea3a6f44
NM
205031. The default ordering of permitted cipher suites for GnuTLS was pessimal
2051 (the order specifies the preference for clients). The order is now AES256,
2052 AES128, 3DES, ARCFOUR128.
bbe902f0 2053
ea3a6f44
NM
205431. Small patch to Sieve code - explicitly set From: when generating an
2055 autoreply.
bbe902f0 2056
ea3a6f44
NM
205732. Exim crashed if a remote delivery caused a very long error message to be
2058 recorded - for instance if somebody sent an entire SpamAssassin report back
2059 as a large number of 550 error lines. This bug was coincidentally fixed by
2060 increasing the size of one of Exim's internal buffers (big_buffer) that
2061 happened as part of the Exiscan merge. However, to be on the safe side, I
2062 have made the code more robust (and fixed the comments that describe what
2063 is going on).
bbe902f0 2064
ea3a6f44
NM
206533. Some experimental protocols are using DNS PTR records for new purposes. The
2066 keys for these records are domain names, not reversed IP addresses. The
2067 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2068 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2069 CAN-2005-0021
2070
ea3a6f44
NM
207134. The host_aton() function is supposed to be passed a string that is known
2072 to be a valid IP address. However, in the case of IPv6 addresses, it was
2073 not checking this. This is a hostage to fortune. Exim now panics and dies
2074 if the condition is not met. A case was found where this could be provoked
2075 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2076 components; fortuitously, this particular loophole had already been fixed
2077 by change 4.50/55 or 4.44/33 above.
2078
2079 If there are any other similar loopholes, the new check in host_aton()
2080 itself should stop them being exploited. The report I received stated that
2081 data on the command line could provoke the exploit when Exim was running as
2082 exim, but did not say which command line option was involved. All I could
2083 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2084 running as the user.
bbe902f0
PH
2085 CAN-2005-0021
2086
ea3a6f44
NM
208735. There was a buffer overflow vulnerability in the SPA authentication code
2088 (which came originally from the Samba project). I have added a test to the
2089 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2090 CAN-2005-0022
2091
ea3a6f44
NM
209236. The daemon start-up calls getloadavg() while still root for those OS that
2093 need the first call to be done as root, but it missed one case: when
2094 deliver_queue_load_max is set with deliver_drop_privilege. This is
2095 necessary for the benefit of the queue runner, because there is no re-exec
2096 when deliver_drop_privilege is set.
bbe902f0 2097
ea3a6f44
NM
209837. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2099 was in use, was not putting the data itself into the right store pool;
2100 consequently, it could be overwritten for a subsequent message in the same
2101 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2102 the caching.)
bbe902f0 2103
ea3a6f44
NM
210438. Sometimes the final signoff response after QUIT could fail to get
2105 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2106 < 0 before doing a fflush(). This bug looks as though it goes back to the
2107 introduction of TLS in release 3.20, but "sometimes" must have been rare
2108 because the tests only now provoked it.
bbe902f0
PH
2109
2110
495ae4b0
PH
2111Exim version 4.43
2112-----------------
2113
2114 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2115 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2116 Now it returns an integer. A number of calls were still expecting a T/F
2117 return. Fortuitously, in all cases, the tests worked in OK situations,
2118 which is the norm. However, things would have gone wrong on any write
2119 failures on the smtp file descriptor. This function is used when sending
2120 messages over SMTP and also when doing verify callouts.
2121
2122 2. When Exim is called to do synchronous delivery of a locally submitted
2123 message (the -odf or -odi options), it no longer closes stderr before doing
2124 the delivery.
2125
2126 3. Implemented the mua_wrapper option.
2127
2128 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2129
2130 5. Implemented the functions header_remove(), header_testname(),
2131 header_add_at_position(), and receive_remove_recipient(), and exported them
2132 to local_scan().
2133
2134 6. If an ACL "warn" statement specified the addition of headers, Exim already
2135 inserted X-ACL-Warn: at the start if there was no header name. However, it
2136 was not making this test for the second and subsequent header lines if
2137 there were newlines in the string. This meant that an invalid header could
2138 be inserted if Exim was badly configured.
2139
2140 7. Allow an ACL "warn" statement to add header lines at the start or after all
2141 the Received: headers, as well as at the end.
2142
2143 8. Added the rcpt_4xx retry error code.
2144
2145 9. Added postmaster_mailfrom=xxx to callout verification option.
2146
214710. Added mailfrom=xxxx to the callout verification option, for verify=
2148 header_sender only.
2149
215011. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2151 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2152
215312. Inserted some casts to stop certain compilers warning when using pointer
2154 differences as field lengths or precisions in printf-type calls (mostly
2155 affecting debugging statements).
2156
215713. Added optional readline() support for -be (dynamically loaded).
2158
215914. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2160 same clock tick as a message's arrival, so that its received time was the
2161 same as the "first fail" time on the retry record, and that message
2162 remained on the queue past the ultimate address timeout, every queue runner
2163 would try a delivery (because it was past the ultimate address timeout) but
2164 after another failure, the ultimate address timeout, which should have then
2165 bounced the address, did not kick in. This was a "< instead of <=" error;
2166 in most cases the first failure would have been in the next clock tick
2167 after the received time, and all would be well.
2168
216915. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2170 being recognized when the domain list was tested by the match_domain
2171 condition in an expansion string.
2172
217316. Added the ${str2b64: operator.
2174
217517. Exim was always calling setrlimit() to set a large limit for the number of
2176 processes, without checking whether the existing limit was already
2177 adequate. (It did check for the limit on file descriptors.) Furthermore,
2178 errors from getrlimit() and setrlimit() were being ignored. Now they are
2179 logged to the main and panic logs, but Exim does carry on, to try to do its
2180 job under whatever limits there are.
2181
218218. Imported PCRE 5.0.
2183
218419. Trivial typo in log message " temporarily refused connection" (the leading
2185 space).
2186
218720. If the log selector return_path_on_delivery was set and an address was
2188 redirected to /dev/null, the delivery process crashed because it assumed
2189 that a return path would always be set for a "successful" delivery. In this
2190 case, the whole delivery is bypassed as an optimization, and therefore no
2191 return path is set.
2192
219321. Internal re-arrangement: the function for sending a challenge and reading
2194 a response while authentication was assuming a zero-terminated challenge
2195 string. It's now changed to take a pointer and a length, to allow for
2196 binary data in such strings.
2197
219822. Added the cyrus_sasl authenticator (code supplied by MBM).
2199
220023. Exim was not respecting finduser_retries when seeking the login of the
2201 uid under which it was called; it was always trying 10 times. (The default
2202 setting of finduser_retries is zero.) Also, it was sleeping after the final
2203 failure, which is pointless.
2204
220524. Implemented tls_on_connect_ports.
2206
220725. Implemented acl_smtp_predata.
2208
220926. If the domain in control=submission is set empty, Exim assumes that the
2210 authenticated id is a complete email address when it generates From: or
2211 Sender: header lines.
2212
221327. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2214 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2215 chown and chgrp in /bin and hostname in /usr/bin.
2216
221728. Exim was keeping the "process log" file open after each use, just as it
2218 does for the main log. This opens the possibility of it remaining open for
2219 long periods when the USR1 signal hits a daemon. Occasional processlog
2220 errors were reported, that could have been caused by this. Anyway, it seems
2221 much more sensible not to leave this file open at all, so that is what now
2222 happens.
2223
222429. The long-running daemon process does not normally write to the log once it
2225 has entered its main loop, and it closes the log before doing so. This is
2226 so that log files can straightforwardly be renamed and moved. However,
2227 there are a couple of unusual error situations where the daemon does write
2228 log entries, and I had neglected to close the log afterwards.
2229
223030. The text of an SMTP error response that was received during a remote
2231 delivery was being truncated at 512 bytes. This is too short for some of
2232 the long messages that one sometimes sees. I've increased the limit to
2233 1024.
2234
223531. It is now possible to make retry rules that apply only when a message has a
2236 specific sender, in particular, an empty sender.
2237
223832. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2239 it possible to be selective about when SMTP synchronization is enforced.
2240
224133. Added "control = caseful_local_part" and "control = "caselower_local_part".
2242
224332. Implemented hosts_connection_nolog.
2244
224533. Added an ACL for QUIT.
2246
224734. Setting "delay_warning=" to disable warnings was not working; it gave a
2248 syntax error.
2249
225035. Added mailbox_size and mailbox_filecount to appendfile.
2251
225236. Added control = no_multiline_responses to ACLs.
2253
225437. There was a bug in the logic of the code that waits for the clock to tick
2255 in the case where the clock went backwards by a substantial amount such
2256 that the microsecond fraction of "now" was more than the microsecond
2257 fraction of "then" (but the whole seconds number was less).
2258
225938. Added support for the libradius Radius client library this is found on
2260 FreeBSD (previously only the radiusclient library was supported).
2261
2262
2263Exim version 4.42
2264-----------------
2265
2266 1. When certain lookups returned multiple values in the form name=value, the
2267 quoting of the values was not always being done properly. Specifically:
2268 (a) If the value started with a double quote, but contained no whitespace,
2269 it was not quoted.
2270 (b) If the value contained whitespace other than a space character (i.e.
2271 tabs or newlines or carriage returns) it was not quoted.
2272 This fix has been applied to the mysql and pgsql lookups by writing a
2273 separate quoting function and calling it from the lookup code. The fix
2274 should probably also be applied to nisplus, ibase and oracle lookups, but
2275 since I cannot test any of those, I have not disturbed their existing code.
2276
2277 2. A hit in the callout cache for a specific address caused a log line with no
2278 reason for rejecting RCPT. Now it says "Previous (cached) callout
2279 verification failure".
2280
2281 3. There was an off-by-one bug in the queryprogram router. An over-long
2282 return line was truncated at 256 instead of 255 characters, thereby
2283 overflowing its buffer with the terminating zero. As well as fixing this, I
2284 have increased the buffer size to 1024 (and made a note to document this).
2285
2286 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2287 when Exim is waiting for an SMTP response from a remote server, Exim
2288 restarts its select() call on the socket, thereby resetting its timeout.
2289 This is not a problem when such interrupts are rare. Somebody set up a cron
2290 job to run exiwhat every 2 minutes, which is less than the normal select()
2291 timeout (5 or 10 minutes). This meant that the select() timeout never
2292 kicked in because it was always reset. I have fixed this by comparing the
2293 time when an interrupt arrives with the time at the start of the first call
2294 to select(). If more time than the timeout has elapsed, the interrupt is
2295 treated as a timeout.
2296
2297 5. Some internal re-factoring in preparation for the addition of Sieve
2298 extensions (by MH). In particular, the "personal" test is moved to a
2299 separate function, and given an option for scanning Cc: and Bcc: (which is
2300 not set for Exim filters).
2301
2302 6. When Exim created an email address using the login of the caller as the
2303 local part (e.g. when creating a From: or Sender: header line), it was not
2304 quoting the local part when it contained special characters such as @.
2305
2306 7. Installed new OpenBSD configuration files.
2307
2308 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2309 try to make them clearer.
2310
2311 9. Callout options, other than the timeout value, were being ignored when
2312 verifying sender addresses in header lines. For example, when using
2313
2314 verify = header_sender/callout=no_cache
2315
2316 the cache was (incorrectly) being used.
2317
231810. Added a missing instance of ${EXE} to the exim_install script; this affects
2319 only the Cygwin environment.
2320
232111. When return_path_on_delivery was set as a log selector, if different remote
2322 addresses in the same message used different return paths and parallel
2323 remote delivery occurred, the wrong values would sometimes be logged.
2324 (Whenever a remote delivery process finished, the return path value from
2325 the most recently started remote delivery process was logged.)
2326
232712. RFC 3848 specifies standard names for the "with" phrase in Received: header
2328 lines when AUTH and/or TLS are in use. This is the "received protocol"
2329 field. Exim used to use "asmtp" for authenticated SMTP, without any
2330 indication (in the protocol name) for TLS use. Now it follows the RFC and
2331 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2332 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2333 names appear in log lines as well as in Received: header lines.
2334
233513. Installed MH's patches for Sieve to add the "copy" and "vacation"
2336 extensions, and comparison tests, and to fix some bugs.
2337
233814. Changes to the "personal" filter test:
2339
2340 (1) The test was buggy in that it was just doing the equivalent of
2341 "contains" tests on header lines. For example, if a user's address was
2342 anne@some.where, the "personal" test would incorrectly be true for
2343
2344 To: susanne@some.where
2345
2346 This test is now done by extracting each address from the header in turn,
2347 and checking the entire address. Other tests that are part of "personal"
2348 are now done using regular expressions (for example, to check local parts
2349 of addresses in From: header lines).
2350
2351 (2) The list of non-personal local parts in From: addresses has been
2352 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2353 taken from the Sieve specification recommendations.
2354
2355 (3) If the message contains any header line starting with "List-" it is
2356 treated as non-personal.
2357
2358 (4) The test for "circular" in the Subject: header line has been removed
2359 because it now seems ill-conceived.
2360
236115. Minor typos in src/EDITME comments corrected.
2362
236316. Installed latest exipick from John Jetmore.
2364
236517. If headers_add on a router specified a text string that was too long for
2366 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2367 of string_sprintf() is now avoided.
2368
236918. $message_body_size was not set (it was always zero) when running the DATA
2370 ACL and the local_scan() function.
2371
237219. For the "mail" command in an Exim filter, no default was being set for
2373 the once_repeat time, causing a random time value to be used if "once" was
2374 specified. (If the value happened to be <= 0, no repeat happened.) The
2375 default is now 0s, meaning "never repeat". The "vacation" command was OK
2376 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2377 (I found it when inspecting the code).
2378
237920. There is now an overall timeout for performing a callout verification. It
2380 defaults to 4 times the callout timeout, which applies to individual SMTP
2381 commands during the callout. The overall timeout applies when there is more
2382 than one host that can be tried. The timeout is checked before trying the
2383 next host. This prevents very long delays if there are a large number of
2384 hosts and all are timing out (e.g. when the network connections are timing
2385 out). The value of the overall timeout can be changed by specifying an
2386 additional sub-option for "callout", called "maxwait". For example:
2387
2388 verify = sender/callout=5s,maxwait=20s
2389
239021. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2391 to the end before writing, but this should make it even safer).
2392
239322. Exim was forgetting that it had advertised PIPELINING for the second and
2394 subsequent messages on an SMTP connection. It was also not resetting its
2395 memory on STARTTLS and an internal HELO.
2396
239723. When Exim logs an SMTP synchronization error within a session, it now
2398 records whether PIPELINING has been advertised or not.
2399
240024. Added 3 instances of "(long int)" casts to time_t variables that were being
2401 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2402 rather than long int.
2403
240425. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2405
240626. Added the never_mail option to autoreply.
2407
2408
2409Exim version 4.41
2410-----------------
2411
2412 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2413 crash if the getsockname() call failed; this can happen if a connection is
2414 closed very soon after it is established. The problem was simply in the
2415 order in which certain operations were done, causing Exim to try to write
2416 to the SMTP stream before it had set up the file descriptor. The bug has
2417 been fixed by making things happen in the correct order.
2418
2419
2420Exim version 4.40
2421-----------------
2422
2423 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2424 before the connection was closed, thus losing the rejection response.
2425
2426 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2427 some early Solaris releases, but causes trouble in current releases where
2428 socklen_t is defined.
2429
2430 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2431 always exist.
2432
2433 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2434 configured.
2435
2436 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2437 that releasing the top of it at the end releases what was used for sub-
2438 expansions (unless the block got too big). However, discard this block if
2439 the first thing is a variable or header, so that we can use its block when
2440 it is dynamic (useful for very large $message_headers, for example).
2441
2442 6. Lookups now cache *every* query, not just the most recent. A new, separate
2443 store pool is used for this. It can be recovered when all lookup caches are
2444 flushed. Lookups now release memory at the end of their result strings.
2445 This has involved some general refactoring of the lookup sources.
2446
2447 7. Some code has been added to the store_xxx() functions to reduce the amount
2448 of flapping under certain conditions.
2449
2450 8. log_incoming_interface used to affect only the <= reception log lines. Now
2451 it causes the local interface and port to be added to several more SMTP log
2452 lines, for example "SMTP connection from", and rejection lines.
2453
2454 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2455
245610. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2457
245811. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2459 could be overwritten at the end of the current message (or the start of a
2460 new message if it was set in a HELO ACL). The value is now preserved for
2461 the duration of the SMTP connection.
2462
246312. If a transport had a headers_rewrite setting, and a matching header line
2464 contained an unqualified address, that address was qualified, even if it
2465 did not match any rewriting rules. The underlying bug was that the values
2466 of the flags that permit the existence of unqualified sender and recipient
2467 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2468 non-local messages, and by -bnq for local messages) were not being
2469 preserved with the message after it was received.
2470
247113. When Exim was logging an SMTP synchronization error, it could sometimes log
2472 "next input=" as part of the text comprising the host identity instead of
2473 the correct text. The code was using the same buffer for two different
2474 strings. However, depending on which order the printing function evaluated
2475 its arguments, the bug did not always show up. Under Linux, for example, my
2476 test suite worked just fine.
2477
247814. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2479 doesn't work with some older versions of Perl. It has been changed to "my",
2480 which in any case is probably the better facility to use.
2481
248215. A really picky compiler found some instances of statements for creating
2483 error messages that either had too many or two few arguments for the format
2484 string.
2485
248616. The size of the buffer for calls to the DNS resolver has been increased
2487 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2488 for addresses that have a lot of PTR records. This alleviates a problem; it
2489 does not fully solve it.
2490
249117. A dnsdb lookup for PTR records that receives more data than will fit in the
2492 buffer now truncates the list and logs the incident, which is the same
2493 action as happens when Exim is looking up a host name and its aliases.
2494 Previously in this situation something unpredictable would happen;
2495 sometimes it was "internal error: store_reset failed".
2496
249718. If a server dropped the connection unexpectedly when an Exim client was
2498 using GnuTLS and trying to read a response, the client delivery process
2499 crashed while trying to generate an error log message.
2500
250119. If a "warn" verb in an ACL added multiple headers to a message in a single
2502 string, for example:
2503
2504 warn message = H1: something\nH2: something
2505
2506 the text was added as a single header line from Exim's point of view
2507 though it ended up OK in the delivered message. However, searching for the
2508 second and subsequent header lines using $h_h2: did not work. This has been
2509 fixed. Similarly, if a system filter added multiple headers in this way,
2510 the routers could not see them.
2511
251220. Expanded the error message when iplsearch is called with an invalid key to
2513 suggest using net-iplsearch in a host list.
2514
251521. When running tests using -bh, any delays imposed by "delay" modifiers in
2516 ACLs are no longer actually imposed (and a message to that effect is
2517 output).
2518
251922. If a "gecos" field in a passwd entry contained escaped characters, in
2520 particular, if it contained a \" sequence, Exim got it wrong when building
2521 a From: or a Sender: header from that name. A second bug also caused
2522 incorrect handling when an unquoted " was present following a character
2523 that needed quoting.
2524
252523. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2526 was not being matched caselessly.
2527
252824. Arranged for all hyphens in the exim.8 source to be escaped with
2529 backslashes.
2530
253125. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2532 properly. Recipient callout cache records were still being keyed to include
2533 the sender, even when use_sender was set false. This led to far more
2534 callouts that were necessary. The sender is no longer included in the key
2535 when use_sender is false.
2536
253726. Added "control = submission" modifier to ACLs.
2538
253927. Added the ${base62d: operator to decode base 62 numbers.
2540
254128. dnsdb lookups can now access SRV records.
2542
254329. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2544 the configuration file.
2545
254630. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2547 (-v) mode. This makes the output for a verbose queue run more intelligible.
2548
254931. Added a use_postmaster feature to recipient callouts.
2550
255132. Added the $body_zerocount variable, containing the number of binary zero
2552 bytes in the message body.
2553
255433. The time of last modification of the "new" subdirectory is now used as the
2555 "mailbox time last read" when there is a quota error for a maildir
2556 delivery.
2557
255834. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2559
256035. Added +ignore_unknown as a special item in host lists.
2561
256236. Code for decoding IPv6 addresses in host lists is now included, even if
2563 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2564 address was recognized as an IP address, but was then not correctly decoded
2565 into binary, causing unexpected and incorrect effects when compared with
2566 another IP address.
2567
2568
2569Exim version 4.34
2570-----------------
2571
2572 1. Very minor rewording of debugging text in manualroute to say "list of
2573 hosts" instead of "hostlist".
2574
2575 2. If verify=header_syntax was set, and a header line with an unqualified
2576 address (no domain) and a large number of spaces between the end of the
2577 name and the colon was received, the reception process suffered a buffer
2578 overflow, and (when I tested it) crashed. This was caused by some obsolete
2579 code that should have been removed. The fix is to remove it!
2580
2581 3. When running in the test harness, delay a bit after writing a bounce
2582 message to get a bit more predictability in the log output.
2583
2584 4. Added a call to search_tidyup() just before forking a reception process. In
2585 theory, someone could use a lookup in the expansion of smtp_accept_max_
2586 per_host which, without the tidyup, could leave open a database connection.
2587
2588 5. Added the variables $recipient_data and $sender_data which get set from a
2589 lookup success in an ACL "recipients" or "senders" condition, or a router
2590 "senders" option, similar to $domain_data and $local_part_data.
2591
2592 6. Moved the writing of debug_print from before to after the "senders" test
2593 for routers.
2594
2595 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2596 problems for message scanning, either using a data ACL, or using
2597 local_scan() because the Received: header was not generated till after they
2598 were called (in order to set the time as the time of reception completion).
2599 I have revised the way this works. The header is now generated after the
2600 body is received, but before the ACL or local_scan() are called. After they
2601 are run, the timestamp in the header is updated.
2602
2603
2604Exim version 4.33
2605-----------------
2606
2607 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2608 before starting a queue runner without re-exec. This happened only when
2609 deliver_drop_privilege was set or when the Exim user was set to root. The
2610 effect of the bug was that timeouts during subsequent deliveries caused
2611 crashes instead of being properly handled. The handler is now left at its
2612 default (and expected) setting.
2613
2614 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2615 message, again when deliver_drop_privilege is set or Exim is run as root.
2616 The bug described in (1) was not present in this case, but the tidying up
2617 of the other signals was missing. I have made the two cases consistent.
2618
2619 3. The ignore_target_hosts setting on a manualroute router was being ignored
2620 for hosts that were looked up using the /MX notation.
2621
2622 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2623 in domain lists.
2624
2625 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2626 operated on the sender address. After changing the $sender_address to <>
2627 for the sender address verify, Exim was re-instated it as the original
2628 (before rewriting) address, but remembering that it had rewritten it, so it
2629 wasn't rewriting it again. This bug also had the effect of breaking the
2630 sender address verification caching when the sender address was rewritten.
2631
2632 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2633 This has been changed so that if the ip literal address matches
2634 ignore_target_hosts, the router declines.
2635
2636 7. Added expansion conditions match_domain, match_address, and match_local_
2637 part (NOT match_host).
2638
2639 8. The placeholder for the Received: header didn't have a length field set.
2640
2641 9. Added code to Exim itself and to exim_lock to test for a specific race
2642 condition that could lead to file corruption when using MBX delivery. The
2643 issue is with the lockfile that is created in /tmp. If this file is removed
2644 after a process has opened it but before that process has acquired a lock,
2645 there is the potential for a second process to recreate the file and also
2646 acquire a lock. This could lead to two Exim processes writing to the file
2647 at the same time. The added code performs the same test as UW imapd; it
2648 checks after acquiring the lock that its file descriptor still refers to
2649 the same named file.
2650
265110. The buffer for building added header lines was of fixed size, 8192 bytes.
2652 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2653 when Exim is built.
2654
265511. Added the smtp_active_hostname option. If used, this will typically be made
2656 to depend on the incoming interface address. Because $interface_address is
2657 not set up until the daemon has forked a reception process, error responses
2658 that can happen earlier (such as "too many connections") no longer contain
2659 a host name.
2660
266112. If an expansion in a condition on a "warn" statement fails because a lookup
2662 defers, the "warn" statement is abandoned, and the next ACL statement is
2663 processed. Previously this caused the whole ACL to be aborted.
2664
266513. Added the iplsearch lookup type.
2666
266714. Added ident_timeout as a log selector.
2668
266915. Added tls_certificate_verified as a log selector.
2670
267116. Added a global option tls_require_ciphers (compare the smtp transport
2672 option of the same name). This controls incoming TLS connections.
2673
267417. I finally figured out how to make tls_require_ciphers do a similar thing
2675 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2676 before starting the TLS session.
2677
267818. Tabs are now shown as \t in -bP output.
2679
268019. If the log selector return_path_on_delivery was set, Exim crashed when
2681 bouncing a message because it had too many Received: header lines.
2682
268320. If two routers both had headers_remove settings, and the first one included
2684 a superfluous trailing colon, the final name in the first list and the
2685 first name in the second list were incorrectly joined into one item (with a
2686 colon in the middle).
2687
2688
2689Exim version 4.32
2690-----------------
2691
2692 1. Added -C and -D options to the exinext utility, mainly to make it easier
2693 to include in the automated testing, but these could be helpful when
2694 multiple configurations are in use.
2695
2696 2. The exinext utility was not formatting the output nicely when there was
2697 an alternate port involved in the retry record key, nor when there was a
2698 message id as well (for retries that were specific to a specific message
2699 and a specific host). It was also confused by IPv6 addresses, because of
2700 the additional colons they contain. I have fixed the IPv4 problem, and
2701 patched it up to do a reasonable job for IPv6.
2702
2703 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2704 delivery, the log line now contains "pipelined" if PIPELINING was used.
2705
2706 4. An SMTP transport process used to panic and die if the bind() call to set
2707 an explicit outgoing interface failed. This has been changed; it is now
2708 treated in the same way as a connect() failure.
2709
2710 5. A reference to $sender_host_name in the part of a conditional expansion
2711 that was being skipped was still causing a DNS lookup. This no longer
2712 occurs.
2713
2714 6. The def: expansion condition was not recognizing references to header lines
2715 that used bh_ and bheader_.
2716
2717 7. Added the _cache feature to named lists.
2718
2719 8. The code for checking quota_filecount in the appendfile transport was
2720 allowing one more file than it should have been.
2721
2722 9. For compatibility with Sendmail, the command line option
2723
2724 -prval:sval
2725
2726 is equivalent to
2727
2728 -oMr rval -oMs sval
2729
2730 and sets the incoming protocol and host name (for trusted callers). The
2731 host name and its colon can be omitted when only the protocol is to be set.
2732 Note the Exim already has two private options, -pd and -ps, that refer to
2733 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2734 "s", but I don't think that's a major issue.
2735
273610. A number of refactoring changes to the code, none of which should affect
2737 Exim's behaviour:
2738
2739 (a) The number of logging options was getting close to filling up the
2740 32-bit word that was used as a bit map. I have split them into two classes:
2741 those that are passed in the argument to log_write(), and those that are
2742 only ever tested independently outside of that function. These are now in
2743 separate 32-bit words, so there is plenty of room for expansion again.
2744 There is no change in the user interface or the logging behaviour.
2745
2746 (b) When building, for example, log lines, the code previously used a
2747 macro that called string_cat() twice, in order to add two strings. This is
2748 not really sufficiently general. Furthermore, there was one instance where
2749 it was actually wrong because one of the argument was used twice, and in
2750 one call a function was used. (As it happened, calling the function twice
2751 did not affect the overall behaviour.) The macro has been replaced by a
2752 function that can join an arbitrary number of extra strings onto a growing
2753 string.
2754
2755 (c) The code for expansion conditions now uses a table and a binary chop
2756 instead of a serial search (which was left over from when there were very
2757 few conditions). Also, it now recognizes conditions like "pam" even when
2758 the relevant support is not compiled in: a suitably worded error message is
2759 given if an attempt is made to use such a condition.
2760
276111. Added ${time_interval:xxxxx}.
2762
276312. A bug was causing one of the ddress fields not to be passed back correctly
2764 from remote delivery subprocesses. The field in question was not being
2765 subsequently used, so this caused to problems in practice.
2766
276713. Added new log selectors queue_time and deliver_time.
2768
276914. Might have fixed a bug in maildirsizefile handling that threw up
2770 "unexpected character" debug warnings, and recalculated the data
2771 unnecessarily. In any case, I expanded the warning message to give more
2772 information.
2773
277415. Added the message "Restricted characters in address" to the statements in
2775 the default ACL that block characters like @ and % in local parts.
2776
277716. Change 71 for release 4.31 proved to be much less benign that I imagined.
2778 Three changes have been made:
2779
2780 (a) There was a serious bug; a negative response to MAIL caused the whole
2781 recipient domain to be cached as invalid, thereby blocking all messages
2782 to all local parts at the same domain, from all senders. This bug has
2783 been fixed. The domain is no longer cached after a negative response to
2784 MAIL if the sender used is not empty.
2785
2786 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2787 been restored.
2788
2789 (c) A new callout option, "use_sender" has been added for people who want
2790 the modified behaviour.
2791
2792
2793Exim version 4.31
2794-----------------
2795
2796 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2797 Larry Rosenman.
2798
2799 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2800 indeed breaks things for older releases.
2801
2802 3. Added additional logging to the case where there is a problem reading data
2803 from a filter that is running in a subprocess using a pipe, in order to
2804 try to track down a specific problem.
2805
2806 4. Testing facility fudge: when running in the test harness and attempting
2807 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2808 getting "No route to host". Convert this to a timeout.
2809
2810 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2811 warning.
2812
2813 6. Some OS don't have socklen_t but use size_t instead. This affects the
2814 fifth argument of getsockopt() amongst other things. This is now
2815 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2816 can be set for individual OS. I have set it for SunOS5, OSF1, and
2817 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2818 some earlier ones do not.
2819
2820 7. Change 4.30/15 was not doing the test caselessly.
2821
2822 8. The standard form for an IPv6 address literal was being rejected by address
2823 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2824 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2825 this, as well as the form without the "IPv6" on the front (but only when
2826 address literals are enabled, of course).
2827
2828 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2829
283010. Exim crashed if a message with an empty sender address specified by -f
2831 encountered a router with an errors_to setting. This could be provoked only
2832 by a command such as
2833
2834 exim -f "" ...
2835
2836 where an empty string was supplied; "<>" did not hit this bug.
2837
283811. Installed PCRE release 4.5.
2839
284012. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2841 remained set. It is now erased.
2842
284313. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2844 times from message ids (which are base 36 rather than the normal 62).
2845
284614. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2847 were being counted as actual protocol errors, and logged if the log
2848 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2849 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2850 and DATA following a set of rejected RCPTs do not count as protocol errors.
2851 In other words, Exim assumes they were pipelined, though this may not
2852 actually be the case. Of course, in all cases the client gets an
2853 appropriate error code.
2854
285515. If a lookup fails in an ACL condition, a message about the failure may
2856 be available; it is used if testing the ACL cannot continue, because most
2857 such messages specify what the cause of the deferral is. However, some
2858 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2859 that caused an old message to be retained and used if a later statement
2860 caused a defer, replacing the real cause of the deferral.
2861
286216. If an IP address had so many PTR records that the DNS lookup buffer
2863 was not large enough to hold them, Exim could crash while trying to process
2864 the truncated data. It now detects and logs this case.
2865
286617. Further to 4.21/58, another change has been made: if (and only if) the
2867 first line of a message (the first header line) ends with CRLF, a bare LF
2868 in a subsequent header line has a space inserted after it, so as not to
2869 terminate the header.
2870
287118. Refactoring: tidied an ugly bit of code in appendfile that copied data
2872 unnecessarily, used atoi() instead of strtol(), and didn't check the
2873 termination when getting file sizes from file names by regex.
2874
287519. Completely re-implemented the support for maildirsize files, in the light
2876 of a number of problems with the previous contributed implementation
2877 (4.30/29). In particular:
2878
2879 . If the quota is zero, the maildirsize file is maintained, but no quota is
2880 imposed.
2881
2882 . If the maildir directory does not exist, it is created before any attempt
2883 to write a maildirsize file.
2884
2885 . The quota value in the file is just a cache; if the quota is changed in
2886 the transport, the new value overrides.
2887
2888 . A regular expression is available for excluding directories from the
2889 count.
2890
289120. The autoreply transport checks the characters in options that define the
2892 message's headers; it allows continued headers, but it was checking with
2893 isspace() after an embedded newline instead of explicitly looking for a
2894 space or a tab.
2895
289621. If all the "regular" hosts to which an address was routed had passed their
2897 expiry times, and had not reached their retry times, the address was
2898 bounced, even if fallback hosts were defined. Now Exim should go on to try
2899 the fallback hosts.
2900
290122. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2902 equivalent code in the SMTP transport. Some hosts send humungous responses
2903 to HELO/EHLO, more than 1024 it seems.
2904
290523. Refactoring: code in filter.c used (void *) for "any old type" but this
2906 gives compiler warnings in some environments. I've now done it "properly",
2907 using a union.
2908
290924. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2910 (because of problems with the built-in one) was declared to return uschar *
2911 instead of char *, causing compiler failure.
2912
291325. Fixed a file descriptor leak when processing alias/forward files.
2914
291526. Fixed a minor format string issue in dbfn.c.
2916
291727. Typo in exim.c: ("dmbnz" for "dbmnz").
2918
291928. If a filter file refered to $h_xxx or $message_headers, and the headers
2920 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2921 become corrupted.
2922
292329. When a sender address is verified, it is cached, to save repeating the test
2924 when there is more than one recipient in a message. However, when the
2925 verification involves a callout, it is possible for different callout
2926 options to be set for different recipients. It is too complicated to keep
2927 track of this in the cache, so now Exim always runs a verification when a
2928 callout is required, relying on the callout cache for the optimization.
2929 The overhead is duplication of the address routing, but this should not be
2930 too great.
2931
293230. Fixed a bug in callout caching. If a RCPT command caused the sender address
2933 to be verified with callout=postmaster, and the main callout worked but the
2934 postmaster check failed, the verification correctly failed. However, if a
2935 subsequent RCPT command asked for sender verification *without* the
2936 postmaster check, incorrect caching caused this verification also to fail,
2937 incorrectly.
2938
293931. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2940 it was not caching the DNS options (qualify_single, search_parents) that
2941 were used when the lookup failed. A subsequent lookup with different
2942 options therefore always gave the same answer, though there were cases
2943 where it should not have. (Example: a "domains = !$mx_any" option on a
2944 dnslookup router: the "domains" option is always processed without any
2945 widening, but the router might have qualify_single set.) Now Exim uses the
2946 cached value only when the same options are set.
2947
294832. Added John Jetmore's "exipick" utility to the distribution.
2949
295033. GnuTLS: When an attempt to start a TLS session fails for any reason other
2951 than a timeout (e.g. a certificate is required, and is not provided), an
2952 Exim server now closes the connection immediately. Previously it waited for
2953 the client to close - but if the client is SSL, it seems that they each
2954 wait for each other, leading to a delay before one of them times out.
2955
295634: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2957 maintained 0.8.x compatibility because I don't think many are using it, and
2958 it is clearly obsolete.
2959
296035. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2961 transport.
2962
296336. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2964 client certificate was expired. A simple patch fixes this, though I don't
2965 understand the full logic of why the verify callback is called multiple
2966 times.
2967
296837. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2969 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2970 which causes problems with some clients (such as the Certicom SSL Plus
2971 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2972 disables the coutermeasure allowing Eudora to connect."
2973
297438. Exim was not checking that a write() to a log file succeeded. This could
2975 lead to Bad Things if a log got too big, in particular if it hit a file
2976 size limit. Exim now panics and dies if it cannot write to a log file, just
2977 as it does if it cannot open a log file.
2978
297939. Modified OS/Makefile-Linux so that it now contains
2980
2981 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2982
2983 The two -D definitions ensure that Exim is compiled with large file
2984 support, which makes it possible to handle log files that are bigger than
2985 2^31.
2986
298740. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2988 instance) a domain was checked against a named list that involved a lookup,
2989 causing $domain_data to be set, then another domain was checked against the
2990 same list, then the first domain was re-checked, the value of $domain_data
2991 after the final check could be wrong. In particular, if the second check
2992 failed, it could be set empty. This bug probably also applied to
2993 $localpart_data.
2994
299541. The strip_trailing_dot option was not being applied to the address given
2996 with the -f command-line option.
2997
299842. The code for reading a message's header from the spool was incrementing
2999 $received_count, but never initializing it. This meant that the value was
3000 incorrect (doubled) while delivering a message in the same process in which
3001 it was received. In the most common configuration of Exim, this never
3002 happens - a fresh exec is done - but it can happen when
3003 deliver_drop_privilege is set.
3004
300543. When Exim logs an SMTP synchronization error - client data sent too soon -
3006 it now includes up to 150 characters of the unexpected data in the log
3007 line.
3008
300944. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3010 and building data strings. The size of both of these buffers was 10 000
3011 bytes - far larger than anybody would *ever* want, thought I. Needless to
3012 say, somebody hit the limit. I have increased the maximum line length to
3013 20 000 and the maximum data length of concatenated lines to 100 000. I have
3014 also fixed two bugs, because there was no checking on these buffers. Tsk,
3015 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3016 buffer is too small.
3017
301845. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3019 lsearch lookups. Now it does.
3020
302146. When parsing a route_list item in a manualroute router, a fixed-length
3022 buffer was used for the list of hosts. I made this 1024 bytes long,
3023 thinking that nobody would ever have a list of hosts that long. Wrong.
3024 Somebody had a whole pile of complicated expansion conditions, and the
3025 string was silently truncated, leading to an expansion error. It turns out
3026 that it is easier to change to an unlimited length (owing to other changes
3027 that have happened since this code was originally written) than to build
3028 structure for giving a limitation error. The length of the item that
3029 expands into the list of hosts is now unlimited.
3030
303147. The lsearch lookup could not handle data where the length of text line was
3032 more than 4095 characters. Such lines were truncated, leading to shortened
3033 data being returned. It should now handle lines of any length.
3034
303548. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3036 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3037 ACL").
3038
303949. Cosmetic tidy to scripts like exicyclog that are generated by globally
3040 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3041 no longer happens in comment lines. A list of replacements is now placed
3042 at the head of all of the source files, except those whose only change is
3043 to replace PERL_COMMAND in the very first #! line.
3044
304550. Replaced the slow insertion sort in queue.c, for sorting the list of
3046 messages on the queue, with a bottom-up merge sort, using code contributed
3047 by Michael Haardt. This should make operations like -bp somewhat faster on
3048 large queues. It won't affect queue runners, except when queue_run_in_order
3049 is set.
3050
305151. Installed eximstats 1.31 in the distribution.
3052
305352. Added support for SRV lookups to the dnslookup router.
3054
305553. If an ACL referred to $message_body or $message_body_end, the value was not
3056 reset for any messages that followed in the same SMTP session.
3057
305854. The store-handling optimization for building very long strings was not
3059 differentiating between the different store pools. I don't think this
3060 actually made any difference in practice, but I've tidied it.
3061
306255. While running the routers to verify a sender address, $sender_address
3063 was still set to the sender address. This is wrong, because when routing to
3064 send a bounce to the sender, it would be empty. Therefore, I have changed
3065 it so that, while verifying a sender address, $sender_address is set to <>.
3066 (There is no change to what happens when verifying a recipient address.)
3067
306856. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3069 target A or AAAA records (if not already returned) without resetting the
3070 qualify_single or search_parents options of the DNS resolver. These are
3071 inappropriate in this case because the targets of MX and SRV records must
3072 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3073 target that, when qualified, matched something in the local domain. These
3074 two options are now turned off when doing these lookups.
3075
307657. It seems that at least some releases of Reiserfs (which does not have the
3077 concept of a fixed number of inodes) returns zero and not -1 for the
3078 number of available inodes. This interacted badly with check_spool_inodes,
3079 which assumed that -1 was the "no such thing" setting. What I have done is
3080 to check that the total number of inodes is greater than zero before doing
3081 the test of how many are available.
3082
308358. When a "warn" ACL statement has a log_message modifier, the message is
3084 remembered, and not repeated. This is to avoid a lot of repetition when a
3085 message has many recipients that cause the same warning to be written.
3086 Howewer, Exim was preserving the list of already written lines for an
3087 entire SMTP session, which doesn't seem right. The memory is now reset if a
3088 new message is started.
3089
309059. The "rewrite" debugging flag was not showing the result of rewriting in the
3091 debugging output unless log_rewrite was also set.
3092
309360. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3094 of (int)(handle) when we know that handle contains (void *)(-1).
3095
309661. The Exim daemon panic-logs an error return when it closes the incoming
3097 connection. However "connection reset by peer" seems to be common, and
3098 isn't really an error worthy of noting specially, so that particular error
3099 is no long logged.
3100
310162. When Exim is trying to find all the local interfaces, it used to panic and
3102 die if the ioctl to get the interface flags failed. However, it seems that
3103 on at least one OS (Solaris 9) it is possible to have an interface that is
3104 included in the list of interfaces, but for which you get a failure error
3105 for this call. This happens when the interface is not "plumbed" into a
3106 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3107 failure of the "get flags" call assumes that the interface is down.
3108
310963. Added a ${eval10: operator, which assumes all numbers are decimal. This
3110 makes life easier for people who are doing arithmetic on fields extracted
3111 from dates, where you often get leading zeros that should not be
3112 interpreted as octal.
3113
311464. Added qualify_domain to the redirect router, to override the global
3115 setting.
3116
311765. If a pathologically long header line contained very many addresses (the
3118 report of this problem mentioned 10 000) and each of them was rewritten,
3119 Exim could use up a very large amount of memory. (It kept on making new
3120 copies of the header line as it rewrote, and never released the old ones.)
3121 At the expense of a bit more processing, the header rewriting function has
3122 been changed so that it no longer eats memory in this way.
3123
312466. The generation of the Received: header has been moved from the time that a
3125 message starts to be received, to the time that it finishes. The timestamp
3126 in the Received: header should now be very close to that of the <= log
3127 line. There are two side-effects of this change:
3128
3129 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3130 logged header lines no longer include the local Received: line, because
3131 it has not yet been created. The same applies to a copy of the message
3132 that is returned to a non-SMTP sender when a message is rejected.
3133
3134 (b) When a filter file is tested using -bf, no additional Received: header
3135 is added to the test message. After some thought, I decided that this
3136 is a bug fix.
3137
3138 This change does not affect the value of $received_for. It is still set
3139 after address rewriting, but before local_scan() is called.
3140
314167. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3142
314368. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3144 gave an unhelpful panic error message, and a defer error. I have managed to
3145 change this behaviour so that it now rejects any supplied certificate,
3146 which seems right, as the list of acceptable certificates is empty.
3147
314869. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3149 gave an unhelpful defer error. I have not managed to make this reject any
3150 supplied certificates, but the error message it gives is "no certificate
3151 supplied", which is not helpful.
3152
315370. exigrep's output now also includes lines that are not associated with any
3154 message, but which match the given pattern. Implemented by a patch from
3155 Martin Sluka, which also tidied up the Perl a bit.
3156
315771. Recipient callout verification, like sender verification, was using <> in
3158 the MAIL FROM command. This isn't really the right thing, since the actual
3159 sender may affect whether the remote host accepts the recipient or not. I
3160 have changed it to use the actual sender in the callout; this means that
3161 the cache record is now keyed on a recipient/sender pair, not just the
3162 recipient address. There doesn't seem to be a real danger of callout loops,
3163 since a callout by the remote host to check the sender would use <>.
3164 [SEE ABOVE: changed after hitting problems.]
3165
316672. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3167 temporary errors. However, in the case of such a code being given after
3168 the end of a data transmission (i.e. after ".") Exim was failing to write
3169 a retry record for the message. (Yes, there was some broken host that was
3170 actually sending 8xx at this point.)
3171
317273. An unknown lookup type in a host list could cause Exim to panic-die when
3173 the list was checked. (An example that provoked this was putting <; in the
3174 middle of a list instead of at the start.) If this happened during a DATA
3175 ACL check, a -D file could be left lying around. This kind of configuration
3176 error no longer causes Exim to die; instead it causes a defer errror. The
3177 incident is still logged to the main and panic logs.
3178
317974. Buglet left over from Exim 3 conversion. The message "too many messages
3180 in one connection" was written to the rejectlog but not the mainlog, except
3181 when address rewriting (yes!) was being logged.
3182
318375. Added write_rejectlog option.
3184
318576. When a system filter was run not as root (that is, when system_filter_user
3186 was set), the values of the $n variables were not being returned to the
3187 main process; thus, they were not subsequently available in the $sn
3188 variables.
3189
319077. Added +return_path_on_delivery log selector.
3191
319278. A connection timeout was being treated differently from recipients deferred
3193 when testing hosts_max_try with a message that was older than the host's
3194 retry timeout. (The host should not be counted, thus allowing all hosts to
3195 be tried at least once before bouncing.) This may have been the cause of an
3196 occasionally reported bug whereby a message would remain on the queue
3197 longer than the retry timeout, but would be bounced if a delivery was
3198 forced. I say "may" because I never totally pinned down the problem;
3199 setting up timeout/retry tests is difficult. See also the next item.
3200
320179. The ultimate address timeout was not being applied to errors that involved
3202 a combination of host plus message (for example, a timeout on a MAIL
3203 command). When an address resolved to a number of possible hosts, and they
3204 were not all tried for each delivery (e.g. because of hosts_max_try), a
3205 message could remain on the queue longer than the retry timeout.
3206
320780. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3208 Haardt.
3209
321081. Fixed an obscure SMTP outgoing bug which required at least the following
3211 conditions: (a) there was another message waiting for the same server;
3212 (b) the server returned 5xx to all RCPT commands in the first message so
3213 that the message was not completed; (c) the server dropped the connection
3214 or gave a negative response to the RSET that Exim sends to abort the
3215 transaction. The observed case was a dropped connection after DATA that had
3216 been sent in pipelining mode. That is, the server had advertised PIPELINING
3217 but was not implementing it correctly. The effect of the bug was incorrect
3218 behaviour, such as trying another host, and this could lead to a crash.
3219
3220
3221Exim version 4.30
3222-----------------
3223
3224 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3225 and daemon.c were passed as pointers to ints; they should have been
3226 pointers to socklen_t variables (which are typically unsigned ints).
3227
3228 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3229 fixed.
3230
3231 3. Fixed a really odd bug that affected only the testing scheme; patching a
3232 certain fixed string in the binary changed the value of another string that
3233 happened to be identical to the end of the original first string.
3234
3235 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3236 name", it returns that address as the IP address. On some operating
3237 systems (e.g. Solaris), it also passes back the IP address string as the
3238 "host name". However, on others (e.g. Linux), it passes back an empty
3239 string. Exim wasn't checking for this, and was changing the host name to an
3240 empty string, assuming it had been canonicized.
3241
3242 5. Although rare, it is permitted to have more than one PTR record for a given
3243 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3244 all the names associated with an address, because they do in Solaris.
3245 However, it seems that they do not in Linux for data that comes from the
3246 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3247 I found this out when I moved to a new Linux workstation and tried to run
3248 the Exim test suite.
3249
3250 To get round this problem I have changed the code so that it now does its
3251 own call to the DNS to look up PTR records when searching for a host name.
3252 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3253 addresses that are only in /etc/hosts are still found.
3254
3255 This behaviour is, however, controlled by an option called host_lookup_
3256 order, which defaults to "bydns:byaddr". If people want to use the other
3257 order, or indeed, just use one or the other means of lookup, they can
3258 specify it in this variable.
3259
3260 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3261 some operating systems, this comes back from gethostbyaddr() as an empty
3262 string, and this is what Exim used to test for. However, it seems that in
3263 other systems, "." is yielded. Exim now tests for this case too.
3264
3265 7. The values of check_spool_space and check_log_space are now held internally
3266 as a number of kilobytes instead of an absolute number of bytes. If a
3267 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3268 kilobyte. This means that much larger values can be stored.
3269
3270 8. Exim monitor: an attempt to get the action menu when not actually pointing
3271 at a message produces an empty menu entitled "No message selected". This
3272 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3273 no entries in it ("Shell widget menu has zero width and/or height"). So I
3274 have added a single, blank menu entry in this case.
3275
3276 9. Added ${quote_local_part.
3277
327810. MIME decoding is now applied to the contents of Subject: header lines when
3279 they are logged.
3280
328111. Now that a reference to $sender_host_address automatically causes a reverse
3282 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3283 host lookup before query-style lookups in lists that might use this
3284 variable. This has therefore been abolished, and the "net-" prefix is no
3285 longer necessary for query-style lookups.
3286
328712. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3288 have been a typo for LFLAGS, so it has been changed.
3289
329013. The install script calls Exim with "-C /dev/null" in order to find the
3291 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3292 to be output. Howeve, since Exim outputs its version number before the
3293 error, it didn't break the script. It just looked ugly. I fixed this by
3294 always allowing "-C /dev/null" if the caller is root.
3295
329614. Ignore overlarge ACL variable number when reading spool file - insurance
3297 against a later release with more variables having written the file.
3298
329915. The standard form for an IPv6 address literal was being rejected by EHLO.
3300 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3301 this, as well as the form without the "IPv6" on the front.
3302
330316. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3304 OS/Makefile-Darwin file.
3305
330617. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3307 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3308
330918. After change 4.21/52, "%ld" was used to format the contents of the $inode
3310 variable. However, some OS use ints for inodes. I've added cast to long int
3311 to get rid of the compiler warning.
3312
331319. I had forgotten to lock out "/../" in configuration file names when
3314 ALT_CONFIG_PREFIX was set.
3315
331620. Routers used for verification do not need to specify transports. However,
3317 if such a router generated a host list, and callout was configured, Exim
3318 crashed, because it could not find a port number from the (non-existent)
3319 transport. It now assumes port 25 in this circumstance.
3320
332121. Added the -t option to exigrep.
3322
332322. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3324 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3325 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3326 them is set, LOOKUP_LSEARCH is forced.
3327
332823. "exim -bV" now outputs a list of lookups that are included in the binary.
3329
333024. Added sender and host information to the "rejected by local_scan()" log
3331 line; previously there was no indication of these.
3332
333325. Added .include_if_exists.
3334
333526. Change 3.952/11 added an explicit directory sync on top of a file sync for
3336 Linux. It turns out that not all file systems support this. Apparently some
3337 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3338 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3339 not supported on the file descriptor, is now ignored when Exim is trying to
3340 sync a directory. This applies only to Linux.
3341
334227. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3343
334428. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3345 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3346 this.
3347
334829. Added support for maildirsize files from supplied patch (modified a bit).
3349
335030. The use of :fail: followed by an empty string could lead Exim to respond to
3351 sender verification failures with (e.g.):
3352
3353 550 Verification failed for <xxx>
3354 550 Sender verify failed
3355
3356 where the first response line was missing the '-' that indicates it is not
3357 the final line of the response.
3358
335931. The loop for finding the name of the user that called Exim had a hardwired
3360 limit of 10; it now uses the value of finduser_retries, which is used for
3361 all other user lookups.
3362
336332. Added $received_count variable, available in data and not_smtp ACLs, and at
3364 delivery time.
3365
336633. Exim was neglecting to zero errno before one call of strtol() when
3367 expanding a string and expecting an integer value. On some systems this
3368 resulted in spurious "integer overflow" errors. Also, it was casting the
3369 result into an int without checking.
3370
337134. Testing for a connection timeout using "timeout_connect" in the retry rules
3372 did not work. The code looks as if it has *never* worked, though it appears
3373 to have been documented since at least releast 1.62. I have made it work.
3374
337535. The "timeout_DNS" error in retry rules, also documented since at least
3376 1.62, also never worked. As it isn't clear exactly what this means, and
3377 clearly it isn't a major issue, I have abolished the feature by treating it
3378 as "timeout", and writing a warning to the main and panic logs.
3379
338036. The display of retry rules for -brt wasn't always showing the error code
3381 correctly.
3382
338337. Added new error conditions to retry rules: timeout_A, timeout_MX,
3384 timeout_connect_A, timeout_connect_MX.
3385
338638. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3387 to the empty sender.
3388
338939. The daemon was not analysing the content of -oX till after it had closed
3390 stderr and disconnected from the controlling terminal. This meant that any
3391 syntax errors were only noted on the panic log, and the return code from
3392 the command was 0. By re-arranging the code a little, I've made the
3393 decoding happen first, so such errors now appear on stderr, and the return
3394 code is 1. However, the actual setting up of the sockets still happens in
3395 the disconnected process, so errors there are still only recorded on the
3396 panic log.
3397
339840. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3399 connections (as happens on some IP stacks) was logged at start up time as
3400 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3401 it from "IPv6 and IPv4", which means that two separate sockets are being
3402 used.
3403
340441. The debug output for gethostbyname2() or getipnodebyname() failures now
3405 says whether AF_INET or AF_INET6 was passed as an argument.
3406
340742. Exiwhat output was messed up when time zones were included in log
3408 timestamps.
3409
341043. Exiwhat now gives more information about the daemon's listening ports,
3411 and whether -tls-on-connect was used.
3412
341344. The "port" option of the smtp transport is now expanded.
3414
341545. A "message" modifier in a "warn" statement in a non-message ACL was being
3416 silently ignored. Now an error message is written to the main and panic
3417 logs.
3418
341946. There's a new ACL modifier called "logwrite" which writes to a log file
3420 as soon as it is encountered.
3421
342247. Added $local_user_uid and $local_user_gid at routing time.
3423
342448. Exim crashed when trying to verify a sender address that was being
3425 rewritten to "<>".
3426
342749. Exim was recognizing only a space character after ".include". It now also
3428 recognizes a tab character.
3429
343050. Fixed several bugs in the Perl script that creates the exim.8 man page by
3431 extracting the relevant information from the specification. The man page no
3432 longer contains scrambled data for the -d option, and I've added a section
3433 at the front about calling Exim under different names.
3434
343551. Added "extra_headers" argument to the "mail" command in filter files.
3436
343752. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3438 crash.
3439
344053. Installed eximstats 1.29.
3441
344254. Added transport_filter_timeout as a generic transport option.
3443
344455. Exim no longer adds an empty Bcc: header to messages that have no To: or
3445 Cc: header lines. This was required by RFC 822, but it not required by RFC
3446 2822.
3447
344856. Exim used to add From:, Date:, and Message-Id: header lines to any
3449 incoming messages that did not have them. Now it does so only if the
3450 message originates locally, that is, if there is no associated remote host
3451 address. When Resent- header lines are present, this applies to the Resent-
3452 lines rather than the non-Resent- lines.
3453
345457. Drop incoming SMTP connection after too many syntax or protocol errors. The
3455 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3456
345758. Messages for configuration errors now include the name of the main
3458 configuration file - useful now that there may be more than one file in a
3459 list (.included file names were always shown).
3460
346159. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3462 for those rare installations that do not start the daemon as root or run it
3463 setuid root. I've cut out the call to initgroups() if the daemon is not
3464 root at that time.
3465
346660. The Exim user and group can now be bound into the binary as text strings
3467 that are looked up at the start of Exim's processing.
3468
346961. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3470
347162. Added $mailstore_basename variable.
3472
347363. Installed patch to sieve.c from Michael Haardt.
3474
347564. When Exim failed to open the panic log after failing to open the main log,
3476 the original message it was trying to log was written to stderr and debug
3477 output, but if they were not available (the usual case in production), it
3478 was lost. Now it is written to syslog before the two lines that record the
3479 failures to open the logs.
3480
348165. Users' Exim filters run in subprocesses under the user's uid. It is
3482 possible for a "deliver" command or an alias in a "personal" command to
3483 provoke an address rewrite. If logging of address rewriting is configured,
3484 this fails because the process is not running as root or exim. There may be
3485 a better way of dealing with this, but for the moment (because 4.30 needs
3486 to be released), I have disabled address rewrite logging when running a
3487 filter in a non-root, non-exim process.
3488
3489
3490Exim version 4.24
3491-----------------
3492
3493 1. The buildconfig auxiliary program wasn't quoting the value set for
3494 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3495 not defined. This bug was masked in 4.22 by the effect that was fixed in
3496 change 4.23/1.
3497
3498 2. Some messages that were rejected after a message id was allocated were
3499 shown as "incomplete" by exigrep. It no longer does this for messages that
3500 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3501
3502 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3503 have allow_domain_literals set, the ID did not get logged in the <= line.
3504 Domain literals are now always recognized in Message-ID: header lines.
3505
3506 4. The first argument for a ${extract expansion item is the key name or field
3507 number. Leading and trailing spaces in this item were not being ignored,
3508 causing some misleading effects.
3509
3510 5. When deliver_drop_privilege was set, single queue runner processes started
3511 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3512 same command in the process it spins off) were not dropping privilege.
3513
3514 6. When the daemon running as "exim" started a queue runner, it always
3515 re-executed Exim in the spun-off process. This is a waste of effort when
3516 deliver_drop_privilege is set. The new process now just calls the
3517 queue-runner function directly.
3518
3519
3520Exim version 4.23
3521-----------------
3522
3523 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3524 HEADERS_CHARSET.
3525
3526 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3527 ignored. Though the use of -oP was forcing the writing of a pid file, it
3528 was always written to the default place.
3529
3530 3. If the message "no IP address found for host xxxx" is generated during
3531 incoming verification, it is now followed by identification of the incoming
3532 connection (so you can more easily find what provoked it).
3533
3534 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3535
3536 5. Added some features to "harden" Exim a bit more against certain attacks:
3537
3538 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3539 be put in Local/Makefile. This is like the never_users runtime option,
3540 but it cannot be overridden. The default setting is "root".
3541
3542 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3543 prefix string with which any file named in a -C command line option
3544 must start.
3545
3546 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3547 is retained for -C and -D only if the caller of Exim is root. Without
3548 it, the exim user may also use -C and -D and retain privilege.
3549
3550 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3551 command line option is disabled.
3552
3553 6. Macro names set by the -D option must start with an upper case letter, just
3554 like macro names defined in the configuration file.
3555
3556 7. Added "dereference=" facility to LDAP.
3557
3558 8. Two instances of the typo "uknown" in the source files are fixed.
3559
3560 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3561 the Configure-Makefile script screwed up while processing it.
3562
356310. Incorporated PCRE 4.4.
3564
356511. The SMTP synchronization check was not operating right at the start of an
3566 SMTP session. For example, it could not catch a HELO sent before the client
3567 waited for the greeting. There is now a check for outstanding input at the
3568 point when the greeting is written. Because of the duplex, asynchronous
3569 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3570 way, but not yet received, when the check is performed.
3571
357212. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3573 on TCP/IP sockets, because this apparently causes some broken clients to
3574 timeout.
3575
357613. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3577 unchanged) from the Cygwin maintainer.
3578
357914. The code for -bV that shows what is in the binary showed "mbx" when maildir
3580 was supported instead of testing for mbx. Effectively a typo.
3581
358215. The spa authenticator server code was not checking that the input it
3583 received was valid base64.
3584
358516. The debug output line for the "set" modifier in ACLs was not showing the
3586 name of the variable that was being set.
3587
358817. Code tidy: the variable type "vtype_string" was never used. Removed it.
3589
359018. Previously, a reference to $sender_host_name did not cause a DNS reverse
3591 lookup on its own. Something else was needed to trigger the lookup. For
3592 example, a match in host_lookup or the need for a host name in a host list.
3593 Now, if $sender_host_name is referenced and the host name has not yet been
3594 looked up, a lookup is performed. If the lookup fails, the variable remains
3595 empty, and $host_lookup_failed is set to "1".
3596
359719. Added "eqi" as a case-independent comparison operator.
3598
359920. The saslauthd authentication condition could segfault if neither service
3600 nor realm was specified.
3601
360221. If an overflowing value such as "2048M" was set for message_size_limit, the
3603 error message that was logged was misleading, and incoming SMTP
3604 connections were dropped. The message is now more accurate, and temporary
3605 errors are given to SMTP connections.
3606
360722. In some error situations (such as 21 above) Exim rejects all SMTP commands
3608 (except RSET) with a 421 error, until QUIT is received. However, it was
3609 failing to send a response to QUIT.
3610
361123. The HELO ACL was being run before the code for helo_try_verify_hosts,
3612 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3613 ACL is now run after the helo_try_verify_hosts code.
3614
361524. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3616 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3617 case-independent, so other case variants are also recognized). Apparently
3618 some systems use these upper case variants.
3619
362025. If more than two messages were waiting for the same host, and a transport
3621 filter was specified for the transport, Exim sent two messages over the
3622 same TCP/IP connection, and then failed with "socket operation on non-
3623 socket" when it tried to send the third.
3624
362526. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3626
362727. The extern definition of crypt16() in expand.c was not being excluded when
3628 the OS had its own crypt16() function.
3629
363028. Added bounce_return_body as a new option, and bounce_return_size_limit
3631 as a preferred synonym for return_size_limit, both as an option and as an
3632 expansion variable.
3633
363429. Added LIBS=-liconv to OS/Makefile-OSF1.
3635
363630. Changed the default configuration ACL to relax the local part checking rule
3637 for addresses that are not in any local domains. For these addresses,
3638 slashes and pipe symbols are allowed within local parts, but the sequence
3639 /../ is explicitly forbidden.
3640
364131. SPA server authentication was not clearing the challenge buffer before