Fix typo.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
cc2ed8f7 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.399 2006/09/26 13:51:57 ph10 Exp $
495ae4b0
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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
d203e649
PH
34PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
35 (quoted-printable decoding).
36
cc2ed8f7 37PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 38 later the small subsequent patch to fix an introduced bug.
f951fd57 39
ddfcd446
PH
40PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
41
d45b1de8
PH
42PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
43
44PH/08 An error is now given if message_size_limit is specified negative.
45
38a0a95f 46PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 47 to be given (somewhat) arbitrary names.
38a0a95f 48
a2405d83
JJ
49JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
50 in 4.64-PH/09.
51
52JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
53 miscellaneous code fixes
54
6ea85e9a
PH
55PH/10 Added the log_reject_target ACL modifier to specify where to log
56 rejections.
57
26da7e20
PH
58PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
59 hostname. This is wrong, because it relates to the incoming message (and
60 probably the interface on which it is arriving) and not to the outgoing
61 callout (which could be using a different interface). This has been
62 changed to use the value of the helo_data option from the smtp transport
63 instead - this is what is used when a message is actually being sent. If
64 there is no remote transport (possible with a router that sets up host
65 addresses), $smtp_active_hostname is used.
6ea85e9a 66
944e9e9c 67
478be7b0
SC
68Exim version 4.63
69-----------------
70
71SC/01 Use a glob alias rather than an array ref in eximstats generated
72 parser. This improves both readability and performance.
73
74SC/02 Collect SpamAssassin and rejection statistics in eximstats.
75 Don't display local sender or destination tables in eximstats unless
76 there is data to show.
77 Added average volumes into the eximstats top table text output.
78
79SC/03 Collect data on the number of addresses (recipients) as well
80 as the number of messages in eximstats.
81
2b965a65
TF
82TF/01 Correct an error in the documentation for the redirect router. Exim
83 does (usually) call initgroups() when daemonizing.
478be7b0 84
45b91596
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85TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
86 with consistent privilege compared to when running as a daemon.
478be7b0 87
c59f5781
TF
88TF/03 Note in the spec that $authenticated_id is not set for local
89 submissions from trusted users.
90
90fc3069
TF
91TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
92 Thanks to Dean Brooks <dean@iglou.com> for the patch.
93
6083aca0
TF
94TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
95 by adding some example configuration directives to the default
96 configuration file. A little bit of work is required to uncomment the
97 directives and define how usernames and passwords are checked, but
98 there is now a framework to start from.
99
765b530f
PH
100PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
101 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
102 without this. I don't know how relevant this is to other LDAP libraries.
103
4e167a8c
PH
104PH/02 Add the verb name to the "unknown ACL verb" error.
105
4608d683
PH
106PH/03 Magnus Holmgren's patch for filter_prepend_home.
107
b8dc3e4a
PH
108PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
109
5418e93b
PH
110PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
111 directory not expanded when it should be if an expanded home directory
112 was set for the address (which is overridden by the transport).
113
b4a9bda2
PH
114PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
115 libradius.
116
45b91596
PH
117PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
118 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
119 because it is too late at that time, and has no effect.
120
5547e2c5
PH
121PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
122 security issue with \' (bugzilla #107). I could not use the
123 PQescapeStringConn() function, because it needs a PGconn value as one of
124 its arguments.
125
dbcef0ea
PH
126PH/08 When testing addresses using -bt, indicate those final addresses that
127 are duplicates that would not cause an additional delivery. At least one
128 person was confused, thinking that -bt output corresponded to deliveries.
129 (Suppressing duplicates isn't a good idea as you lose the information
130 about possibly different redirections that led to the duplicates.)
131
25257489
PH
132PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
133 systems where poll() doesn't work, in particular OS X.
134
c816d124
PH
135PH/10 Added more information to debugging output for retry time not reached.
136
a9ccd69a
PH
137PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
138 operations in malware.c.
139
75fa1910
PH
140PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
141 signatures.
142
a7d7aa58
PH
143PH/13 If write_rejectlog was set false when logging was sent to syslog with
144 syslog_duplication set false, log lines that would normally be written
145 both the the main log and to the reject log were not written to syslog at
146 all.
147
42119b09
PH
148PH/14 In the default configuration, change the use of "message" in ACL warn
149 statements to "add_header".
150
41609df5
PH
151PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
152 not followed by a command (e.g. "seen endif").
153
a5bd321b
PH
154PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
155 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
156 latter.
157
e85a7ad5 158PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
159 so that it is now:
160
e85a7ad5
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161 ${if or { \
162 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
163 { match{$h_precedence:}{(?i)bulk|list|junk} } \
164 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
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165 }{no}{yes}}
166
e85a7ad5
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167 The Auto-Submitted: and various List- headers are standardised, whereas I
168 don't think Precedence: ever was.
5dff5817 169
d8fe1c03
PH
170PH/18 Refactored debugging code in route_finduser() to show more information,
171 in particular, the error code if getpwnam() issues one.
172
16282d2b
PH
173PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
174 This is apparently needed in addition to the PH/07 change above to avoid
175 any possible encoding problems.
176
35d40a98
PH
177PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
178 but not after initializing Perl.
179
034d99ab
PH
180PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
181 output them only if debugging. By default they are written stderr,
182 apparently, which is not desirable.
183
6ec97b1b
PH
184PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
185 queries.
186
e22ca4ac
JJ
187JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
188 --not options
189
190JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
191
33d73e3b
PH
192PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
193 authenticated or an ident call has been made. Suppress the default
194 values for $authenticated_id and $authenticated_sender (but permit -oMai
195 and -oMas) when testing with -bh.
196
9ecb03f3
PH
197PH/24 Re-jigged the order of the tests in the default configuration so that the
198 tests for valid domains and recipients precede the DNS black list and CSA
199 tests, on the grounds that those ones are more expensive.
200
084efe8d
PH
201PH/25 Exim was not testing for a space following SMTP commands such as EHLO
202 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
203 This bug exists in every version of Exim that I still have, right back to
204 0.12.
205
366fc9f0
PH
206PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
207 However, an attempt to turn on case-sensitivity in a regex key by
208 including (?-i) didn't work because the subject string was already
209 lowercased, and the effects were non-intuitive. It turns out that a
210 one-line patch can be used to allow (?-i) to work as expected.
211
c59f5781 212
c887c79e
TF
213Exim version 4.62
214-----------------
215
216TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
217 other effects) broke the use of negated acl sub-conditions.
218
1cce3af8
PH
219PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
220 patch).
221
afb3eaaf
PH
222PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
223 "Deny" causes Exim to reject the incoming connection with a 554 error.
224 Unfortunately, if there is a major crisis, such as a disk failure,
225 tcp-wrappers gives "deny", whereas what one would like would be some
226 kind of temporary error. A kludge has been added to help with this.
227 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
228 554 error is used if errno is still zero or contains ENOENT (which occurs
229 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
230 451 error is used.
231
e173618b
PH
232PH/03 Add -lutil to the default FreeBSD LIBS setting.
233
dd16e114
PH
234PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
235 errors. Otherwise a message that provokes a temporary error (when other
236 messages do not) can cause a whole host to time out.
237
f7fd3850
PH
238PH/05 Batch deliveries by appendfile and pipe transports did not work when the
239 addresses were routed directly to files or pipes from a redirect router.
240 File deliveries just didn't batch; pipe deliveries might have suffered
241 odd errors.
242
d87df92c
PH
243PH/06 A failure to get a lock for a hints database would erroneously always say
244 "Failed to get write lock", even when it was really a read lock.
245
7e9f683d
PH
246PH/07 The appendfile transport was creating MBX lock files with a fixed mode
247 of 0600. This has been changed to use the value of the lockfile_mode
248 option (which defaults to 0600).
249
bfad5236
PH
250PH/08 Applied small patch from the Sieve maintainer.
251
01c490df
PH
252PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
253 folder from quota calculations, a direct delivery into this folder messed
254 up the contents of the maildirsize file. This was because the regex was
255 used only to exclude .Trash (or whatever) when the size of the mailbox
256 was calculated. There was no check that a delivery was happening into an
257 excluded directory. This bug has been fixed by ignoring all quota
258 processing for deliveries into excluded directories.
259
d6629cdc
PH
260PH/10 Added the maildirfolder_create_regex option to appendfile.
261
1cce3af8 262
214e2000
PH
263Exim version 4.61
264-----------------
265
266PH/01 The code for finding all the local interface addresses on a FreeBSD
267 system running IPv6 was broken. This may well have applied to all BSD
268 systems, as well as to others that have similar system calls. The broken
269 code found IPv4 interfaces correctly, but gave incorrect values for the
270 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
271 that it would not match correctly against @[] and not recognize the IPv6
272 addresses as local.
273
f9daeae0
PH
274PH/02 The ipliteral router was not recognizing addresses of the form user@
275 [ipv6:....] because it didn't know about the "ipv6:" prefix.
276
7e66e54d
PH
277PH/03 Added disable_ipv6.
278
c8ea1597
PH
279PH/04 Changed $reply_address to use the raw form of the headers instead of the
280 decoded form, because it is most often used to construct To: headers
281 lines in autoreplies, and the decoded form may well be syntactically
282 invalid. However, $reply_address has leading white space removed, and all
283 newlines turned into spaces so that the autoreply transport does not
284 grumble.
285
911f6fde
PH
286PH/05 If group was specified without a user on a router, and no group or user
287 was specified on a transport, the group from the router was ignored.
288
47ca6d6c
PH
289PH/06 Increased the number of ACL variables to 20 of each type, and arranged
290 for visible compile-time settings that can be used to change these
291 numbers, for those that want even more. Backwards compatibility with old
292 spool files has been maintained. However, going back to a previous Exim
293 release will lost any variables that are in spool files.
294
ed0e9820
PH
295PH/07 Two small changes when running in the test harness: increase delay when
296 passing a TCP/IP connection to a new process, in case the original
297 process has to generate a bounce, and remove special handling of
298 127.0.0.2 (sic), which is no longer necessary.
299
eff37e47
PH
300PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
301 be the same on different OS.
302
1921d2ea
PH
303PH/09 Moved a debug statement in filter processing to avoid a race problem when
304 testing.
305
b3f69ca8
JJ
306JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
307 whether --show-vars was specified or not
308
309JJ/02 exipick: Added support for new ACL variable spool format introduced
310 in 4.61-PH/06
311
424a1c63
PH
312PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
313 syntactically invalid From: or Reply-to: line, and a filter used this to
314 generate an autoreply, and therefore failed to obtain an address for the
315 autoreply, Exim could try to deliver to a non-existent relative file
316 name, causing unrelated and misleading errors. What now happens is that
317 it logs this as a hard delivery error, but does not attempt to create a
318 bounce message.
319
7a100415
PH
320PH/11 The exinext utility has a -C option for testing purposes, but although
321 the given file was scanned by exinext itself; it wasn't being passed on
322 when Exim was called.
323
19b9dc85
PH
324PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
325 an end-of-file indication when reading a command response.
326
309bd837
PH
327PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
328 compiled. In many other places in Exim, IPv6 addresses are always
329 recognized, so I have changed this. It also means that IPv4 domain
330 literals of the form [IPV4:n.n.n.n] are now always recognized.
331
59e82a2a
PH
332PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
333 used if the router is not running as root, for example, when verifying at
334 ACL time, or when using -bh. The debugging output from this situation was
335 non-existent - all you got was a failure to exec. I have made two
336 changes:
337
338 (a) Failures to set uid/gid, the current directory, or a process leader
339 in a subprocess such as that created by queryprogram now generate
340 suitable debugging ouput when -d is set.
341
342 (b) The queryprogram router detects when it is not running as root,
343 outputs suitable debugging information if -d is set, and then runs
344 the subprocess without attempting to change uid/gid.
345
9edc04ce
PH
346PH/15 Minor change to Makefile for building test_host (undocumented testing
347 feature).
348
1349e1e5
PH
349PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
350 additional section of a DNS packet that returns MX or SRV records.
351 Instead, it always explicitly searches for A/AAAA records. This avoids
352 major problems that occur when a DNS server includes only records of one
353 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
354 fixed another bug: if SRV records were looked up and the corresponding
355 address records were *not* found in the additional section, the port
356 values from the SRV records were lost.
357
ea49d0e1
PH
358PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
359 using the correct key (the original address) when searching the retry
360 rules in order to find which one to use for generating the retry hint.
361
064a94c9
PH
362PH/18 If quota_warn_message contains a From: header, Exim now refrains from
363 adding the default one. Similarly, if it contains a Reply-To: header, the
364 errors_reply_to option, if set, is not used.
365
727071f8
PH
366PH/19 When calculating a retry time, Exim used to measure the "time since
367 failure" by looking at the "first failed" field in the retry record. Now
368 it does not use this if it is later than than the arrival time of the
369 message. Instead it uses the arrival time. This makes for better
370 behaviour in cases where some deliveries succeed, thus re-setting the
371 "first failed" field. An example is a quota failure for a huge message
372 when small messages continue to be delivered. Without this change, the
373 "time since failure" will always be short, possible causing more frequent
374 delivery attempts for the huge message than are intended.
dd16e114 375 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 376
f78eb7c6
PH
377PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
378 $1, $2, $3) because the numerical variables can be reset during some
379 expansion items (e.g. "match"), thereby losing the authentication data.
380
21c28500
PH
381PH/21 Make -bV show the size of off_t variables so that the test suite can
382 decide whether to run tests for quotas > 2G.
383
384PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
385 mailbox_size, and mailbox_filecount in the appendfile transport. If a
386 filecount value is greater than 2G or if a quota value is greater than 2G
387 on a system where the size of off_t is not greater than 4, a panic error
388 is given.
389
1688f43b
PH
390PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
391 never match. The debug and -bh output now contains an explicit error
392 message indicating a malformed IPv4 address or mask.
393
394PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
395 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
396 PH/23 above applies.
397
9675b384
PH
398PH/25 Do not write to syslog when running in the test harness. The only
399 occasion when this arises is a failure to open the main or panic logs
400 (for which there is an explicit test).
401
6a3f1455
PH
402PH/26 Added the /no_tell option to "control=freeze".
403
dac79d3e
PH
404PH/27 If a host name lookup failed very early in a connection, for example, if
405 the IP address matched host_lookup and the reverse lookup yielded a name
406 that did not have a forward lookup, an error message of the form "no IP
407 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
408 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 409
5977a0b3
PH
410PH/28 An enabling patch from MH: add new function child_open_exim2() which
411 allows the sender and the authenticated sender to be set when
412 submitting a message from within Exim. Since child_open_exim() is
413 documented for local_scan(), the new function should be too.
414
c91535f3
PH
415PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
416 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
417 results in an empty string is now treated as unset.
418
0d46a8c8
PH
419PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
420
278c6e6c
PH
421PH/31 Added sender_verify_fail logging option.
422
2cbb4081
PH
423PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
424 needed by RFC 822 but not by RFC 2822 was commented out. I have now
425 tidied the source and removed it altogether.
426
3eef829e
PH
427PH/33 When a queue run was abandoned because the load average was too high, a
428 log line was always written; now it is written only if the queue_run log
429 selector is set. In addition, the log line for abandonment now contains
430 information about the queue run such as the pid. This is always present
431 in "start" and "stop" lines but was omitted from the "abandon" line.
432
1ab95fa6
PH
433PH/34 Omit spaces between a header name and the colon in the error message that
434 is given when verify = headers_syntax fails (if there are lots of them,
435 the message gets confusing).
436
230205fc
PH
437PH/35 Change the default for dns_check_names_pattern to allow slashes within
438 names, as there are now some PTR records that contain slashes. This check
439 is only to protect against broken name servers that fall over on strange
440 characters, so the fact that it applies to all lookups doesn't matter.
441
75e0e026
PH
442PH/36 Now that the new test suite is complete, we can remove some of the
443 special code in Exim that was needed for the old test suite. For example,
444 sorting DNS records because real resolvers return them in an arbitrary
445 order. The new test suite's fake resolver always returns records in the
446 same order.
447
448PH/37 When running in the test harness, use -odi for submitted messages (e.g.
449 bounces) except when queue_only is set, to avoid logging races between
450 the different processes.
451
145396a6
PH
452PH/38 Panic-die if .include specifies a non-absolute path.
453
3cd34f13
PH
454PH/39 A tweak to the "H" retry rule from its user.
455
11121d3d
JJ
456JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
457 a label. They prevented compilation on older perls.
458
459JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
460 a warning to be raised on newish perls.
461
462JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
463 on queue. Changes to match documented behaviour of showing count of
464 messages matching specified criteria.
465
8def5aaf
PH
466PH/40 Changed the default ident timeout from 30s to 5s.
467
929ba01c
PH
468PH/41 Added support for the use of login_cap features, on those BSD systems
469 that have them, for controlling the resources used by pipe deliveries.
470
2632889e
PH
471PH/42 The content-scanning code uses fopen() to create files in which to put
472 message data. Previously it was not paying any attention to the mode of
473 the files. Exim runs with umask(0) because the rest of the code creates
474 files with open(), and sets the required mode explicitly. Thus, these
475 files were ending up world-writeable. This was not a big issue, because,
476 being within the spool directory, they were not world-accessible. I have
477 created a function called modefopen, which takes an additional mode
478 argument. It sets umask(777), creates the file, chmods it to the required
479 mode, then resets the umask. All the relevant calls to fopen() in the
480 content scanning code have been changed to use this function.
481
944a9c55
PH
482PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
483 to 24 hours. This avoids potential overflow problems when processing G
484 and H retry rules. I suspect nobody ever tinkers with this value.
485
4a23603b
PH
486PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
487
4730f942
PH
488PH/45 When the plaintext authenticator is running as a client, the server's
489 challenges are checked to ensure they are valid base64 strings. By
490 default, the authentication attempt is cancelled if an invalid string is
491 received. Setting client_ignore_invalid_base64 true ignores these errors.
492 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
493 they are received. Thus, the responses can be made to depend on the
494 challenges. If an invalid string is ignored, an empty string is placed in
495 the variable.
496
30dba1e6
PH
497PH/46 Messages that are created by the autoreply transport now contains a
498 References: header, in accordance with RFCs 2822 and 3834.
499
382afc6b
PH
500PH/47 Added authenticated_sender_force to the smtp transport.
501
a86229cf
PH
502PH/48 The ${prvs expansion was broken on systems where time_t was long long.
503
50c99ba6
PH
504PH/49 Installed latest patch from the Sieve maintainer.
505
d35e429d
PH
506PH/50 When an Exim quota was set without a file count quota, and mailbox_size
507 was also set, the appendfile transport was unnecessarily scanning a
508 directory of message files (e.g. for maildir delivery) to find the count
509 of files (along with the size), even though it did not need this
510 information. It now does the scan only if it needs to find either the
511 size of the count of files.
512
f90d018c
PH
513PH/51 Added ${time_eval: to convert Exim time strings into seconds.
514
75def545
PH
515PH/52 Two bugs concerned with error handling when the smtp transport is
516 used in LMTP mode:
517
518 (i) Exim was not creating retry information for temporary errors given
519 for individual recipients after the DATA command when the smtp transport
520 was used in LMTP mode. This meant that they could be retried too
521 frequently, and not timed out correctly.
522
523 (ii) Exim was setting the flag that allows error details to be returned
524 for LMTP errors on RCPT commands, but not for LMTP errors for individual
525 recipients that were returned after the DATA command.
526
527PH/53 This is related to PH/52, but is more general: for any failing address,
528 when detailed error information was permitted to be returned to the
529 sender, but the error was temporary, then after the final timeout, only
530 "retry timeout exceeded" was returned. Now it returns the full error as
531 well as "retry timeout exceeded".
532
c46782ef
PH
533PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
534 do this, and (what is worse) MTAs that accept it.
535
71fafd95
PH
536PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
537 will now be deprecated.
538
2c5db4fd
PH
539PH/56 New os.c-cygwin from the Cygwin maintainer.
540
9cf6b11a
JJ
541JJ/06 exipick: added --unsorted option to allow unsorted output in all output
542 formats (previously only available in exim formats via -bpr, -bpru,
543 and -bpra. Now also available in native and exiqgrep formats)
544
545JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
546 with very large, slow to parse queues
547
548JJ/08 exipick: added ! as generic prefix to negate any criteria format
549
550JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
551
898d150f
PH
552PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
553 responses to authentication challenges, though it was showing the
554 challenges; (ii) I've removed the CR characters from the debug output for
555 SMTP output lines.
556
46218253
PH
557PH/58 Allow for the insertion of a newline as well as a space when a string
558 is turned into more than one encoded-word during RFC 2047 encoding. The
559 Sieve code now uses this.
560
e97957bc
PH
561PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
562 data_4xx, lost_connection, tls_required.
563
81e509d7
PH
564PH/60 When a VRFY deferred or FAILED, the log message rather than the user
565 message was being sent as an SMTP response.
566
3d240ff7
PH
567PH/61 Add -l and -k options to exicyclog.
568
b37c4101
PH
569PH/62 When verifying, if an address was redirected to one new address, so that
570 verification continued, and the new address failed or deferred after
571 having set something in $address_data, the value of $address_data was not
572 passed back to the ACL. This was different to the case when no
573 redirection occurred. The value is now passed back in both cases.
574
79378e0f
PH
575PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
576 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
577 use login_cap.h, so on its own it isn't the distinguishing feature. The
578 new name refers directly to the setclassresources() function.
579
e49c7bb4
PH
580PH/65 Added configuration files for NetBSD3.
581
d114ec46
PH
582PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
583
f3d7df6c
PH
584PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
585 is preferred over IPv4.
586
715ab376
PH
587PH/68 The bounce_return_message and bounce_return_body options were not being
588 honoured for bounces generated during the reception of non-SMTP messages.
589 In particular, this applied to messages rejected by the ACL. This bug has
590 been fixed. However, if bounce_return_message is true and bounce_return_
591 body is false, the headers that are returned for a non-SMTP message
592 include only those that have been read before the error was detected.
593 (In the case of an ACL rejection, they have all been read.)
594
6b31b150
PH
595PH/69 The HTML version of the specification is now built in a directory called
596 spec_html instead of spec.html, because the latter looks like a path with
597 a MIME-type, and this confuses some software.
598
599PH/70 Catch two compiler warnings in sieve.c.
600
d515a917
PH
601PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
602 function verify_get_ident() calls ip_connect() to connect a socket, but
603 if the "connect()" function timed out, ip_connect() used to close the
604 socket. However, verify_get_ident() also closes the socket later, and in
605 between Exim writes to the log, which may get opened at this point. When
606 the socket was closed in ip_connect(), the log could get the same file
607 descriptor number as the socket. This naturally causes chaos. The fix is
608 not to close the socket in ip_connect(); the socket should be closed by
609 the function that creates it. There was only one place in the code where
610 this was missing, in the iplookup router, which I don't think anybody now
611 uses, but I've fixed it anyway.
612
9b8fadde
PH
613PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
614 well as to direct DNS lookups. Otherwise the handling of names in host
615 lists is inconsistent and therefore confusing.
616
214e2000 617
5de37277
PH
618Exim version 4.60
619-----------------
620
cc38ddbf
PH
621PH/01 Two changes to the default runtime configuration:
622
623 (1) Move the checks for relay_from_hosts and authenticated clients from
624 after to before the (commented out) DNS black list checks.
625
626 (2) Add control=submission to the relay_from_hosts and authenticated
627 clients checks, on the grounds that messages accepted by these
628 statements are most likely to be submissions.
5de37277 629
72fdd6ae
PH
630PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
631
632 (1) Generate an error if the third argument for the ${prvs expansion is
633 not a single digit.
634
635 (2) Treat a missing third argument of ${prvscheck as if it were an empty
636 string.
637
638 (3) Reset the variables that are obtained from the first argument of
639 ${prvscheck and used in the second argument before leaving the code,
640 because their memory is reclaimed, so using them afterwards may do
641 silly things.
642
643 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
644 one (it's much easier than Tom thought :-).
645
646 (5) Because of (4), we can now allow for the use of $prvscheck_result
647 inside the third argument.
cb9328de 648
cb741023
PH
649PH/03 For some reason, the default setting of PATH when running a command from
650 a pipe transport was just "/usr/bin". I have changed it to
651 "/bin:/usr/bin".
652
f174f16e
PH
653PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
654 anything to be listed in the output from -bV.
b2f5a032 655
c25242d7
PH
656PH/05 When a filter generated an autoreply, the entire To: header line was
657 quoted in the delivery log line, like this:
658
659 => >A.N.Other <ano@some.domain> <original@ddress> ...
660
661 This has been changed so that it extracts the operative address. There
662 may be more than one such address. If so, they are comma-separated, like
663 this:
664
665 => >ano@some.domain,ona@other.domain <original@ddress> ...
666
82c19f95
PH
667PH/06 When a client host used a correct literal IP address in a HELO or EHLO
668 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
669 not being looked up in the rDNS to get a host name, Exim was showing the
670 IP address twice in Received: lines, even though the IP addresses were
671 identical. For example:
672
673 Received: from [1.2.3.4] (helo=[1.2.3.4])
674
675 However, if the real host name was known, it was omitting the HELO data
676 if it matched the actual IP address. This has been tidied up so that it
677 doesn't show the same IP address twice.
678
d7ffbc12
PH
679PH/07 When both +timestamp and +memory debugging was on, the value given by
680 $tod_xxx expansions could be wrong, because the tod_stamp() function was
681 called by the debug printing, thereby overwriting the timestamp buffer.
682 Debugging no longer uses the tod_stamp() function when +timestamp is set.
683
9f526266
PH
684PH/08 When the original message was included in an autoreply transport, it
685 always said "this is a copy of the message, including all the headers",
686 even if body_only or headers_only was set. It now gives an appropriate
687 message.
688
87fcc8b9
PH
689PH/09 Applied a patch from the Sieve maintainer which:
690
691 o fixes some comments
692 o adds the (disabled) notify extension core
693 o adds some debug output for the result of if/elsif tests
694 o points to the current vacation draft in the documentation
695 and documents the missing references header update
696
697 and most important:
698
699 o fixes a bug in processing the envelope test (when testing
700 multiple envelope elements, the last element determinted the
701 result)
702
456682f5
PH
703PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
704 Electronic Mail") by including:
705
706 Auto-submitted: auto-generated
707
708 in the messages that it generates (bounce messages and others, such as
709 warnings). In the case of bounce messages for non-SMTP mesages, there was
710 also a typo: it was using "Auto_submitted" (underscore instead of
711 hyphen). Since every message generated by Exim is necessarily in response
712 to another message, thes have all been changed to:
713
714 Auto-Submitted: auto-replied
715
716 in accordance with these statements in the RFC:
717
718 The auto-replied keyword:
719
720 - SHOULD be used on messages sent in direct response to another
721 message by an automatic process,
722
723 - MUST NOT be used on manually-generated messages,
724
725 - MAY be used on Delivery Status Notifications (DSNs) and Message
726 Disposition Notifications (MDNs),
727
728 - MUST NOT be used on messages generated by automatic or periodic
729 processes, except for messages which are automatic responses to
730 other messages.
731
3e46c1aa
PH
732PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
733 to the default Received: header definition.
456682f5 734
49826d12
PH
735PH/12 Added log selector acl_warn_skipped (default on).
736
eba0c039
PH
737PH/13 After a successful wildlsearch lookup, discard the values of numeric
738 variables because (a) they are in the wrong storage pool and (b) even if
739 they were copied, it wouldn't work properly because of the caching.
740
a0d6ba8a
PH
741PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
742 checking when decoding. Apparently there are clients that generate
743 overlong encoded strings. Why am I not surprised?
744
f0917727
PH
745PH/15 If the first argument of "${if match_address" was not empty, but did not
746 contain an "@" character, Exim crashed. Now it writes a panic log message
747 and treats the condition as false.
748
096fee00
PH
749PH/16 In autoreply, treat an empty string for "once" the same as unset.
750
024bd3c2
PH
751PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
752 extension "envelope-auth". The code is finished and in agreement with
753 other implementations, but there is no documentation so far and in fact,
754 nobody wrote the draft yet. This extension is currently #undef'ed, thus
755 not changing the active code.
756
757 Print executed "if" and "elsif" statements when debugging is used. This
758 helps a great deal to understand what a filter does.
759
760 Document more things not specified clearly in RFC3028. I had all this
761 sorted out, when out of a sudden new issues came to my mind. Oops."
762
df199fec
PH
763PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
764 (Bugzilla #53).
765
d27f1df3
PH
766PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
767 canonical form (as documented). However, after a host name lookup from
768 the IP address, check_host() was doing a simple string comparison with
769 addresses acquired from the DNS when checking that the found name did
770 have the original IP as one of its addresses. Since any found IPv6
771 addresses are likely to be in abbreviated form, the comparison could
772 fail. Luckily, there already exists a function for doing the comparison
773 by converting both addresses to binary, so now that is used instead of
774 the text comparison.
775
96776534
PH
776PH/20 There was another similar case to PH/19, when a complete host name was
777 given in a host list; looking up its IP address could give an abbreviated
778 form, whereas the current host's name might or might not be abbreviated.
779 The same fix has been applied.
780
5de37277 781
9a799bc0
PH
782Exim version 4.54
783-----------------
784
785PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
786 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
787 It now does.
788
99a4b039
PH
789PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
790 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
791
792PH/03 Typo: missing ".o" in src/pcre/Makefile.
793
4b233853
PH
794PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
795 header line, restrict the check to what is listed in RFCs 2369 and 2929.
796 Also, for "Auto-Submitted", treat anything other than "no" as
797 non-personal, in accordance with RFC 3834. (Previously it treated
798 anything starting "auto-" as non-personal.)
799
8857ccfd
PH
800TF/01 The control=submission/name=... option had a problem with syntax
801 errors if the name included a slash character. The /name= option
802 now slurps the rest of the string, so it can include any characters
803 but it must come last in the list of options (after /sender_retain
804 or /domain=).
805
433a2980
PH
806PH/05 Some modifications to the interface to the fake nameserver for the new
807 testing suite.
808
3e46c1aa 809
9a799bc0 810
e3a311ba
TK
811Exim version 4.53
812-----------------
813
814TK/01 Added the "success_on_redirect" address verification option. See
815 NewStuff for rationale and an example.
816
13b685f9
PH
817PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
818
395ff96d
PH
819PH/02 Patch to exigrep to allow it to work on syslog lines.
820
5b68f6e4
PH
821PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
822 fread() to skip over the body file's header line, because in Cygwin the
823 header line is locked and is inaccessible.
824
1ab52c69
PH
825PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
826 co-exist for some time) to make it clear that it is the Exim ID that is
827 referenced, not the Message-ID: header line.
828
b07e6aa3
PH
829PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
830 string_format() function, because snprintf() does not exist on all
831 operating systems.
832
254e032f
PH
833PH/06 The use of forbid_filter_existstest now also locks out the use of the
834 ${stat: expansion item.
835
3af76a81
PH
836PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
837 protocol synchronization error", to keep the pedants happy.
838
2548ba04
PH
839PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
840 well as for IRIX systems, when gcc is being used. See the host.c source
841 file for comments.
842
b6c6011d
PH
843PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
844
cf39cf57
PH
845PH/10 Named domain lists were not working if used in a queue_smtp_domains
846 setting.
847
f1513293
PH
848PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
849 transport and to the smtp transport in LMTP mode.
850
727549a4
PH
851TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
852
af46795e
PH
853PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
854 run a filter in a subprocess. This could lead to confusion in subsequent
855 lookups in the parent process. There should also be a search_tidyup() at
856 the end of the subprocess.
857
d7b47fd0
PH
858PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
859 only if the host matched helo_try_verify_hosts, which caused the
860 verification to occur when the EHLO/HELO command was issued. The ACL just
861 tested the remembered result. Now, if a previous verification attempt has
862 not happened, "verify = helo" does it there and then.
863
ee744174
JJ
864JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
865
b582ab87
PH
866TK/03 Fix log output including CR from clamd.
867
41a13e0a
PH
868PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
869 exist provoked a memory error which could cause a segfault.
870
f625cc5a
PH
871PH/15 Installed PCRE 6.2
872
873PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
874
21f7af35
PH
875PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
876 of the problem. Specifically, suggested +O2 rather than +O1 for the
877 HP-UX compiler.
878
31480e42
PH
879PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
880
2d280592
PH
881PH/20 If a delivery was routed to a non-standard port by means of an SRV
882 record, the port was not correctly logged when the outgoing_port log
883 selector was set (it logged the transort's default port).
884
7cd1141b
PH
885PH/21 Added support for host-specific ports to manualroute, queryprogram,
886 fallback_hosts, and "hosts" in the smtp transport.
887
888PH/22 If the log selector "outgoing_port" is set, the port is now also given on
889 host errors such as "Connection refused".
890
750af86e
PH
891PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
892 authentication with radiusclient 0.4.9:
893
894 - Error returned from rc_read_config was caught wrongly
895 - Username/password not passed on to radius server due to wrong length.
896
897 The presumption is that some radiusclient API changes for 4.51/PH/17
898 were not taken care of correctly. The code is still untested by me (my
899 Linux distribution still has 0.3.2 of radiusclient), but it was
900 contributed by a Radius user.
901
902PH/24 When doing a callout, the value of $domain wasn't set correctly when
903 expanding the "port" option of the smtp transport.
904
4304270b
TK
905TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
906 while reading a MIME header. Thanks to Tom Hughes for a patch.
907
750af86e
PH
908PH/24 Include config.h inside local_scan.h so that configuration settings are
909 available.
910
64ffc24f
PH
911PH/25 Make $smtp_command_argument available after all SMTP commands. This means
912 that in an ACL for RCPT (for example), you can examine exactly what was
913 received.
914
5dd9625b
PH
915PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
916 commands, but it was not correctly comparing the address with the actual
917 client host address. Thus, it would show the EHLO address in Received:
918 header lines when this was not necessary.
919
5591031b
PH
920PH/27 Added the % operator to ${eval:}.
921
ba18e66a
PH
922PH/28 Exim tries to create and chdir to its spool directory when it starts;
923 it should be ignoring failures (because with -C, for example, it has lost
924 privilege). It wasn't ignoring creation failures other than "already
925 exists".
926
9cec981f
PH
927PH/29 Added "crypteq" to the list of supported features that Exim outputs when
928 -bV or -d is used.
929
aa2b5c79
PH
930PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
931 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
932 too many continuations, the temporary file was not being removed, and the
933 return code was incorrect.
aa2b5c79 934
48a53b7f
PH
935PH/31 Missing "BOOL" in function definition in filtertest.c.
936
1c59d63b
PH
937PH/32 Applied Sieve patches from the maintainer.
938
671012da
TK
939TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
940
1509d3a8
PH
941PH/33 Added "verify = not_blind".
942
943PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
944 Local/Makefile (with some defaults set). These are used in built scripts
945 such as exicyclog, but they have never been used in the exim_install
946 script (though there are many overriding facilities there). I have
947 arranged that the exim_install script now takes note of these two
948 settings.
949
950PH/35 Installed configuration files for Dragonfly.
951
2fe1a124
PH
952PH/36 When a locally submitted message by a trusted user did not contain a
953 From: header, and the sender address was obtained from -f or from an SMTP
954 MAIL command, and the trusted user did not use -F to supply a sender
955 name, $originator_name was incorrectly used when constructing a From:
956 header. Furthermore, $originator_name was used for submission mode
957 messages from external hosts without From: headers in a similar way,
958 which is clearly wrong.
959
8800895a
PH
960PH/37 Added control=suppress_local_fixups.
961
ccfdb010
PH
962PH/38 When log_selector = +received_sender was set, and the addition of the
963 sender made the log line's construction buffer exactly full, or one byte
964 less than full, an overflow happened when the terminating "\n" was
965 subsequently added.
966
1130bfb0
PH
967PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
968 when the result of a list match is failure because a DNS lookup failed.
969
ebcb507f
PH
970PH/40 RM_COMMAND is now used in the building process.
971
c35e155c
PH
972PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
973 the "build-* directories that it finds.
974
95d1f782
PH
975PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
976 address in a domain literal was a prefix of an interface address.
977
fd6de02e
PH
978PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
979 when verifying a sender address, unless rewrite_headers is false.
980
58de37c5
PH
981PH/44 Wrote a long comment about why errors_to addresses are verified as
982 recipients, not senders.
983
261cf466
TF
984TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
985 the ratelimit ACL was added.
986
3ee512ff
PH
987PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
988
e08c430f
PH
989PH/46 Added extra information about PostgreSQL errors to the error string.
990
bef5a11f
PH
991PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
992 avoiding the need to install special zones in a real server. This is
993 backwards compatible; if it can't find the fake resolver, it drops back.
994 Thus, both old and new test suites can be run.
995
7546de58
TF
996TF/02 Added util/ratelimit.pl
997
e5d5a95f
TF
998TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
999 clock is set back in time.
1000
2e88a017
TF
1001TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1002 Candler <B.Candler@pobox.com>.
1003
a5f65aa4
TF
1004TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1005 OK for addresses that are the result of redirections.
1006
e7726cbf
PH
1007PH/48 A number of further additions for the benefit of the new test suite,
1008 including a fake gethostbyname() that interfaces to the fake DNS resolver
1009 (see PH/47 above).
1010
a7fdad5b
TF
1011TF/06 The fix for widen_domains has also been applied to qualify_single and
1012 search_parents which are the other dnslookup options that can cause
1013 header rewrites.
1014
6af56900
PH
1015PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1016 type ("H").
1017
0925ede6
PH
1018PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1019
66afa403
TF
1020TF/07 Exim produced the error message "an SRV record indicated no SMTP
1021 service" if it encountered an MX record with an empty target hostname.
1022 The message is now "an MX or SRV record indicated no SMTP service".
1023
0154e85a
TF
1024TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1025 if the DNS of the sending site is misconfigured. This is quite a
1026 common situation. This change restores the behaviour of treating a
1027 helo verification defer as a failure.
1028
16f12c76
PH
1029PH/51 If self=fail was set on a router, the bounce message did not include the
1030 actual error message.
1031
bbe902f0 1032
e5a9dba6
PH
1033Exim version 4.52
1034-----------------
1035
1036TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1037
22c3b60b
PH
1038PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1039 command itself ended in error, the underlying message about the transport
1040 filter timeout was being overwritten with the pipe command error. Now the
1041 underlying error message should be appended to the second error message.
1042
06a9b4b5
PH
1043TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1044
c1ac6996
PH
1045PH/02 Reduce the amount of output that "make" produces by default. Full output
1046 can still be requested.
1047
9c7a242c
PH
1048PH/03 The warning log line about a condition test deferring for a "warn" verb
1049 was being output only once per connection, rather than after each
1050 occurrence (because it was using the same function as for successful
1051 "warn" verbs). This seems wrong, so I have changed it.
1052
87ba3f5f
PH
1053TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1054 it should not have, which might have caused a crash in the right
1055 circumstances, but probably never did.
1056
1057PH/04 Installed a modified version of Tony Finch's patch to make submission
1058 mode fix the return path as well as the Sender: header line, and to
1059 add a /name= option so that you can make the user's friendly name appear
1060 in the header line.
1061
29aba418
TF
1062TF/03 Added the control = fakedefer ACL modifier.
1063
fe0dab11
TF
1064TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1065 Mark Lowes for thorough testing.
870f6ba8 1066
11d337a4
TK
1067TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1068
1069TK/03 Merged latest SRS patch from Miles Wilton.
1070
415c8f3b
PH
1071PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1072 with the definition in sysexits.h (which is #included earlier).
1073 Fortunately, Exim does not actually use EX_OK. The code used to try to
1074 preserve the sysexits.h value, by assumimg that macro definitions were
1075 scanned for macro replacements. I have been disabused of this notion,
1076 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1077
958541e9
PH
1078PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1079 in the smtp transport. When a block could not be written in a single
1080 write() function, the timeout was being re-applied to each part-write.
1081 This seems wrong - if the receiver was accepting one byte at a time it
1082 would take for ever. The timeout is now adjusted when this happens. It
1083 doesn't have to be particularly precise.
1084
c206415f
TK
1085TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1086 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1087
2a4be8f9
PH
1088PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1089 without a domain if the check to <postmaster@domain> fails.
1090
1cba11c5
SC
1091SC/01 Eximstats: added -xls and the ability to specify output files
1092 (patch written by Frank Heydlauf).
1093
1094SC/02 Eximstats: use FileHandles for outputing results.
1095
1096SC/03 Eximstats: allow any combination of xls, txt, and html output.
1097
1098SC/04 Eximstats: fixed display of large numbers with -nvr option
1099
1100SC/05 Eximstats: fixed merging of reports with empty tables.
1101
1102SC/06 Eximstats: added the -include_original_destination flag
1103
1104SC/07 Eximstats: removed tabs and trailing whitespace.
1105
1005d00e
TK
1106TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1107
1108TK/06 MBOX spool code: Add real "From " MBOX separator line
1109 so the .eml file is really in mbox format (even though
1110 most programs do not really care). Patch from Alex Miller.
1111
1112TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1113 The latter is generated from $received_to and is only set if the
1114 message has one envelope recipient. SA can use these headers,
1115 obviously out-of-the-box. Patch from Alex Miller.
1116
9b4768fa
PH
1117PH/08 The ${def test on a variable was returning false if the variable's
1118 value was "0", contrary to what the specification has always said!
1119 The result should be true unless the variable is empty.
1120
1121PH/09 The syntax error of a character other than { following "${if
1122 def:variable_name" (after optional whitespace) was not being diagnosed.
1123 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1124 accidental colon was present, for example, could give incorrect results.
1125
0d7eb84a
PH
1126PH/10 Tidied the code in a number of places where the st_size field of a stat()
1127 result is used (not including appendfile, where other changes are about
1128 to be made).
1129
1130PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1131 This involved changing a lot of size variables from int to off_t. It
1132 should work with maildirs and everything.
1133
40727bee
TK
1134TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1135 spamd dying while we are connected to it.
1136
554d2369
TF
1137TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1138 <jgh@wizmail.org>
1139
1f922db1
PH
1140PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1141 function for BDB 4.3.
1142
ef213c3b
PH
1143PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1144
8ac170f3
PH
1145PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1146 the sources for PCRE have been re-arranged and more files are now
1147 involved.
1148
b1c749bb
PH
1149PH/15 The code I had for printing potentially long long variables in PH/11
1150 above was not the best (it lost precision). The length of off_t variables
1151 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1152 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1153 to be "long long int" or "long int". This is needed for the internal
1154 formatting function string_vformat().
b1c749bb 1155
4aac9b49
PH
1156PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1157 the configuration file to be ":syslog", then the script "guesses" where
1158 the logs files are, rather than using the compiled in default. In our
1159 case the guess is not the same as the compiled default, so the script
1160 suddenly stopped working when I started to use syslog. The patch checks
1161 to see if log_file_path is "". If so, it attempts to read it from exim
1162 with no configuration file to get the compiled in version, before it
1163 falls back to the previous guessing code."
1164
294520c8
TK
1165TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1166 implementing BATV in an Exim configuration. See NewStuff for the gory
1167 details.
1168
5bd022fe
PH
1169PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1170 Makefile that are specific to HP-UX.
1171
90e9ce59
PH
1172PH/18 If the "use_postmaster" option was set for a recipient callout together
1173 with the "random" option, the postmaster address was used as the MAIL
1174 FROM address for the random test, but not for the subsequent recipient
1175 test. It is now used for both.
1176
5ea81592
PH
1177PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1178 patch removes a few documentation additions to RFC 3028, because the
1179 latest draft now contains them. It adds the new en;ascii-case comparator
1180 and a new error check for 8bit text in MIME parts. Comparator and
1181 require names are now matched exactly. I enabled the subaddress
1182 extension, but it is not well tested yet (read: it works for me)."
1183
c6c2dc1d
PH
1184PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1185 rework some of the code of TK/09 above to avoid the hardwired use of
1186 "%lld" and "long long". Replaced the call to snprintf() with a call to
1187 string_vformat().
1188
fffffe4c
PH
1189PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1190 records point to non-existent hosts", "retry timeout exceeded", and
1191 "retry time not reached for any host after a long failure period".
ca02eafb 1192
9a26b6b2
PH
1193PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1194 experimental DomainKeys support:
1195
1196 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1197 (2) On an error such as an illegally used "control", the wrong name for
1198 the control was given.
1199
1200 These problems did NOT occur unless DomainKeys support was compiled.
1201
4aee0225
PH
1202PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1203
32d668a5
PH
1204PH/24 Added ${if match_ip condition.
1205
8187c3f3
PH
1206PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1207 databases so that it will be absolutely obvious if a crash occurs in the
1208 DB library. This is a regular occurrence (often caused by mis-matched
1209 db.h files).
1210
ff790e47 1211PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1212 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1213 picked up on a user's system that detects such things. There doesn't seem
1214 to be a gcc warning option for this - only an attribute that has to be
1215 put on the function's prototype. It seems that in Fedora Core 4 they have
1216 set this on a number of new functions. No doubt there will be more in due
1217 course.
ff790e47 1218
5417f6d1
PH
1219PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1220 specify a transport. However, if an address that was verified by such a
1221 router was the subject of a callout, Exim crashed because it tried to
1222 read the rcpt_include_affixes from the non-existent transport. Now it
1223 just assumes that the setting of that option is false. This bug was
1224 introduced by 4.51/PH/31.
1225
59cf8544
PH
1226PH/28 Changed -d+all to exclude +memory, because that information is very
1227 rarely of interest, but it makes the output a lot bigger. People tend to
1228 do -d+all out of habit.
1229
e7ad8a65
PH
1230PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1231 code in os-type was giving problems when libc.so lives in lib64, like on
1232 x86_64 Fedora Core.
1233
ade42478
PH
1234PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1235 aren't the modern standard, and it seems that some systems' include files
1236 don't always have them. Exim was already checking for some of the newer
1237 ones like T_AAAA, and defining it itself. I've added checks for all the
1238 record types that Exim uses.
1239
182ad5cf
PH
1240PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1241 not automatically generating a new one, as it is supposed to. This
1242 prevented TLS from working. If the file did exist, but contained invalid
1243 data, a new version was generated, as expected. It was only the case of a
1244 non-existent file that was broken.
1245
b0d9fc80
TK
1246TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1247 with a change in libdomainkeys > 0.64.
1248
1249TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1250 from DNS. If the selector record carries the flag, it now has
1251 precedence over the domain-wide flag.
1252
1253TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1254
47c7a64a
PH
1255PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1256 the use of a port name that isn't defined in /etc/services) occurred, the
1257 message was deferred as in a normal delivery, and thus remained on the
1258 spool, instead of being failed because of the mua_wrapper setting. This
1259 is now fixed, and I tidied up some of the mua_wrapper messages at the
1260 same time.
1261
a388bce4
SC
1262SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1263 the messages in a hash of arrays rather than using individual hashes.
1264 This is a bit cleaner and results in dramatic memory savings, albeit
1265 at a slight CPU cost.
1266
1267SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1268 as requested by Marc Sherman.
1269
1270SC/10 Eximstats: added histograms for user specified patterns as requested
1271 by Marc Sherman.
1272
0793e4ed
SC
1273SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1274
c58b88df
PH
1275PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1276 fopen() in the content-scanning modules that did not already have it.
1277
e7ad8a65 1278
7982096b
PH
1279Exim version 4.51
1280-----------------
1281
1a46a8c5
PH
1282TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1283 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1284
2f079f46 1285TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1286
1287TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1288
1289PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1290 to test Sieve filters that use "vacation".
1291
1292PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1293 that changes the way the GnuTLS parameters are stored in the cache file.
1294 The new format can be generated externally. For backward compatibility,
1295 if the data in the cache doesn't make sense, Exim assumes it has read an
1296 old-format file, and it generates new data and writes a new file. This
1297 means that you can't go back to an older release without removing the
1298 file.
1299
1300PH/03 A redirect router that has both "unseen" and "one_time" set does not
1301 work if there are any delivery delays because "one_time" forces the
1302 parent to be marked "delivered", so its unseen clone is never tried
1303 again. For this reason, Exim now forbids the simultaneous setting of
1304 these two options.
1305
1306PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1307 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1308 entry if you want to know the details. The fix, however, neglected to
1309 consider the case when local delivery batching is involved. The test for
1310 "previously delivered" was not happening when checking to see if an
1311 address could be batched with a previous (undelivered) one; under
1312 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1313 address.
1a46a8c5
PH
1314
1315PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1316 in its include files, and this causes problems building Exim.
1317
1318PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1319 header_syntax) but Exim was just ignoring anything given after a slash.
1320 In particular, this caused confusion with an attempt to use "verify =
1321 reverse_host_lookup/defer_ok". An error is now given when options are
1322 supplied for verify items that do not have them. (Maybe reverse_host_
1323 lookup should have a defer_ok option, but that's a different point.)
1324
1325PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1326 defined by RFC 821) to 2048, because there were problems with some AUTH
1327 commands, and RFC 1869 says the size should be increased for extended
1328 SMTP commands that take arguments.
1329
1330PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1331 Finch).
1332
1333PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1334 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1335
49c2d5ea
PH
1336PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1337 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1338 whatever). Otherwise the password may appear in the log. Following change
1339 PH/42 below, there is no longer a chance of it appearing in a bounce
1340 message.
49c2d5ea 1341
bf759a8b
PH
1342PH/11 Installed exipick version 20050225.0 from John Jetmore.
1343
83364d30
PH
1344PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1345 of its addresses was ever tried. (Bugzilla bug #2.)
1346
7999bbd7
PH
1347PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1348 the result incorrectly in the debug output. (It correctly added a newline
1349 to what was transported.)
1350
7dbf77c9
PH
1351TF/01 Added $received_time.
1352
74e0617f
PH
1353PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1354 commented out examples of how to interface to a virus scanner and to
1355 SpamAssassin. Also added commented examples of av_scanner and
1356 spamd_address settings.
1357
2f079f46
PH
1358PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1359 and controls are allowed in which ACLs. There were a couple of minor
1360 errors. Some of the entries in the conditions table (which is a table of
1361 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1362 negation of where the condition IS allowed.
1363
8c841523
PH
1364PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1365
7766a4f0
PH
1366PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1367 header file does not have a version number, so I've had to invent a new
1368 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1369 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1370 radiusclient), but it was contributed by a Radius user.
1371
8b417f2c
PH
1372PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1373 files or directories, for OpenSSL.
1374
901f42cb
PH
1375PH/19 When an Exim process that is running as root has to create an Exim log
1376 file, it does so in a subprocess that runs as exim:exim so as to get the
1377 ownership right at creation (otherwise, other Exim processes might see
1378 the file with the wrong ownership). There was no test for failure of this
1379 fork() call, which would lead to the process getting stuck as it waited
1380 for a non-existent subprocess. Forks do occasionally fail when resources
1381 run out. I reviewed all the other calls to fork(); they all seem to check
1382 for failure.
1383
f9b9210e
PH
1384PH/20 When checking for unexpected SMTP input at connect time (before writing
1385 the banner), Exim was not dealing correctly with a non-positive return
1386 from the read() function. If the client had disconnected by this time,
1387 the result was a log entry for a synchronization error with an empty
1388 string after "input=" when read() returned zero. If read() returned -1
1389 (an event I could not check), uninitialized data bytes were printed.
1390 There were reports of junk text (parts of files, etc) appearing after
1391 "input=".
1392
54cdb463
PH
1393PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1394
cf00dad6
PH
1395PH/22 Added support for macro redefinition, and (re)definition in between
1396 driver and ACL definitions.
1397
acb1b346
PH
1398PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1399 forgetting to use the resulting value; it was using the unexpanded value.
1400
c5ddb310
PH
1401PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1402 hadn't been configured. The fix is from Juergen Kreileder, who
1403 understands it better than I do:
1404
1405 "Here's what I see happening with three configured cyrus_sasl
1406 authenticators configured (plain, login, cram-md5):
1407
1408 On startup auth_cyrus_sasl_init() gets called for each of these.
1409 This means three calls to sasl_listmech() without a specified mech_list.
1410 => SASL tests which mechs of all available mechs actually work
1411 => three warnings about OTP not working
1412 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1413
1414 With the patch, sasl_listmech() also gets called three times. But now
1415 SASL's mech_list option is set to the server_mech specified in the the
1416 authenticator. Or in other words, the answer from sasl_listmech()
1417 gets limited to just the mech you're testing for (which is different
1418 for each call.)
1419 => the return list contains just 'plain' or 'login', 'cram-md5' or
1420 nothing depending on the value of ob->server_mech.
1421
1422 I've just tested the patch: Authentication still works fine,
1423 unavailable mechs specified in the exim configuration are still
1424 caught, and the auth.log warnings about OTP are gone."
1425
31619da6
PH
1426PH/25 When debugging is enabled, the contents of the command line are added
1427 to the debugging output, even when log_selector=+arguments is not
1428 specified.
1429
bebaf0fc
PH
1430PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1431 answer is "GNU", and only if the return is "GNU/something" is the answer
1432 "Linux".
1433
475fe28a
PH
1434PH/27 $acl_verify_message is now set immediately after the failure of a
1435 verification in an ACL, and so is available in subsequent modifiers. In
1436 particular, the message can be preserved by coding like this:
1437
1438 warn !verify = sender
1439 set acl_m0 = $acl_verify_message
1440
1441 Previously, $acl_verify_message was set only while expanding "message"
1442 and "log_message" when a very denied access.
1443
7e8bec7a
PH
1444PH/28 Modified OS/os.c-Linux with
1445
1446 -#ifndef OS_LOAD_AVERAGE
1447 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1448
1449 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1450 nomenclature these days.)
1451
e4a89c47
PH
1452PH/29 Installed patch from the Sieve maintainer that adds the options
1453 sieve_useraddress and sieve_subaddress to the redirect router.
1454
5ca2a9a1
PH
1455PH/30 In these circumstances:
1456 . Two addresses routed to the same list of hosts;
1457 . First host does not offer TLS;
1458 . First host accepts first address;
1459 . First host gives temporary error to second address;
1460 . Second host offers TLS and a TLS session is established;
1461 . Second host accepts second address.
1462 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1463 and peerdn, if requested) that were in fact used only for the second
1464 address.
7e8bec7a 1465
c688b954
PH
1466PH/31 When doing a callout as part of verifying an address, Exim was not paying
1467 attention to any local part prefix or suffix that was matched by the
1468 router that accepted the address. It now behaves in the same way as it
1469 does for delivery: the affixes are removed from the local part unless
1470 rcpt_include_affixes is set on the transport.
1471
fed77020
PH
1472PH/32 Add the sender address, as F=<...>, to the log line when logging a
1473 timeout during the DATA phase of an incoming message.
1474
7fe1560f
PH
1475PH/33 Sieve envelope tests were broken for match types other than :is. I have
1476 applied a patch sanctioned by the Sieve maintainer.
c688b954 1477
ebb6e6d5
PH
1478PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1479 the uid or gid is negative. A case of a negative gid caused this to be
1480 noticed. The fix allows for either to be negative.
1481
9c4e8f60
PH
1482PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1483 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1484 overlooked.
1485
1486PH/36 The change PH/12 above was broken. Fixed it.
1487
d7174846
PH
1488PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1489 the grounds that routing the same address twice would always produce the
1490 same answer. This might have been true once, but it is certainly no
1491 longer true now. Routing a child address may depend on the previous
1492 routing that produced that child. Some complicated redirection strategies
1493 went wrong when messages had multiple recipients, and made Exim's
1494 behaviour dependent on the order in which the addresses were given.
1495
1496 I have moved the duplicate checking until after the routing is complete.
1497 Exim scans the addresses that are assigned to local and remote
1498 transports, and removes any duplicates. This means that more work will be
1499 done, as duplicates will always all be routed, but duplicates are
1500 presumably rare, so I don't expect this is of any significance.
1501
1502 For deliveries to pipes, files, and autoreplies, the duplicate checking
1503 still happens during the routing process, since they are not going to be
1504 routed further.
1505
cfe75fc3
PH
1506PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1507 It corrects a timeout issue with spamd. This is Ian's comment: "The
1508 background is that sometimes spamd either never reads data from a
1509 connection it has accepted, or it never writes response data. The exiscan
1510 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1511 blindly assumes that writes won't block so it may never time out."
1512
be22d70e
PH
1513PH/39 Allow G after quota size as well as K and M.
1514
0612b098
PH
1515PH/40 The value set for $authenticated_id in an authenticator may not contain
1516 binary zeroes or newlines because the value is written to log lines and
1517 to spool files. There was no check on this. Now the value is run through
1518 the string_printing() function so that such characters are converted to
1519 printable escape sequences.
1520
2e0c1448
PH
1521PH/41 $message_linecount is a new variable that contains the total number of
1522 lines in the message. Compare $body_linecount, which is the count for the
1523 body only.
1524
447d236c
PH
1525PH/42 Exim no longer gives details of delivery errors for specific addresses in
1526 bounce and delay warning messages, except in certain special cases, which
1527 are as follows:
1528
1529 (a) An SMTP error message from a remote host;
1530 (b) A message specified in a :fail: redirection;
1531 (c) A message specified in a "fail" command in a system filter;
1532 (d) A message specified in a FAIL return from the queryprogram router;
1533 (e) A message specified by the cannot_route_message router option.
1534
1535 In these cases only, Exim does include the error details in bounce and
1536 warning messages. There are also a few cases where bland messages such
1537 as "unrouteable address" or "local delivery error" are given.
1538
d20976dc
PH
1539PH/43 $value is now also set for the "else" part of a ${run expansion.
1540
f656d135
PH
1541PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1542 being worked on, but at least Exim now implements the latest version to
1543 play with."
1544
2e2a30b4
PH
1545PH/45 In a pipe transport, although a timeout while waiting for the pipe
1546 process to complete was treated as a delivery failure, a timeout while
1547 writing the message to the pipe was logged, but erroneously treated as a
1548 successful delivery. Such timeouts include transport filter timeouts. For
1549 consistency with the overall process timeout, these timeouts are now
1550 treated as errors, giving rise to delivery failures by default. However,
1551 there is now a new Boolean option for the pipe transport called
1552 timeout_defer, which, if set TRUE, converts the failures into defers for
1553 both kinds of timeout. A transport filter timeout is now identified in
1554 the log output.
1555
9176e9f0
PH
1556PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1557 systems where "make" and "gmake" are different, calling "gmake" at top
1558 level broke things. I've arranged for the value of $(MAKE) to be passed
1559 from the Makefile to this script so that it can call the same version of
1560 "make".
1561
7982096b 1562
bbe902f0
PH
1563A note about Exim versions 4.44 and 4.50
1564----------------------------------------
1565
1566Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1567changes of various kinds. As a consequence, a big documentation update was
1568needed. This delayed the release for rather longer than seemed good, especially
1569in the light of a couple of (minor) security issues. Therefore, the changes
1570that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1571release. So 4.44 and 4.50 are in effect two different branches that both start
1572from 4.43.
1573
1574I have left the 4.50 change log unchanged; it contains all the changes since
15754.43. The change log for 4.44 is below; many of its items are identical to
1576those for 4.50. This seems to be the most sensible way to preserve the
1577historical information.
1578
1579
f7b63901 1580Exim version 4.50
495ae4b0
PH
1581-----------------
1582
5fe762f6
PH
1583 1. Minor wording change to the doc/README.SIEVE file.
1584
139059f6 1585 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1586 computation of the current number of files was incorrect.
495ae4b0 1587
7086e875
PH
1588 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1589 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1590 place.
1591
35af9f61
PH
1592 4. Give more explanation in the error message when the command for a transport
1593 filter fails to execute.
1594
b668c215
PH
1595 5. There are several places where Exim runs a non-Exim command in a
1596 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1597 was being done only for the command run by the queryprogram router. It is
1598 now done for all such subprocesses. The other cases are: ${run, transport
1599 filters, and the commands run by the lmtp and pipe transports.
1600
a494b1e1
PH
1601 6. Added CONFIGURE_GROUP build-time option.
1602
1603 7. Some older OS have a limit of 256 on the maximum number of file
1604 descriptors. Exim was using setrlimit() to set 1000 as a large value
1605 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1606 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1607
c5fcb476
PH
1608 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1609 was an oversight, and furthermore, ever since the addition of extra
1610 controls (e.g. 4.43/32), the checks on when to allow different forms of
1611 "control" were broken. There should now be diagnostics for all cases when a
1612 control that does not make sense is encountered.
1613
69358f02
PH
1614 9. Added the /retain_sender option to "control=submission".
1615
5be20824
PH
161610. $recipients is now available in the predata ACL (oversight).
1617
eb2c0248
PH
161811. Tidy the search cache before the fork to do a delivery from a message
1619 received from the command line. Otherwise the child will trigger a lookup
1620 failure and thereby defer the delivery if it tries to use (for example) a
1621 cached ldap connection that the parent has called unbind on.
1622
2a3eea10
PH
162312. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1624 of $address_data from the recipient verification was clobbered by the
1625 sender verification.
1626
162713. The value of address_data from a sender verification is now available in
1628 $sender_address_data in subsequent conditions in the ACL statement.
1629
23c7ff99
PH
163014. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1631
4deaf07d
PH
163215. Added a new option "connect=<time>" to callout options, to set a different
1633 connection timeout.
1634
926e1192
PH
163516. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1636 was its contents. (It was OK if the option was not defined at all.)
1637
650edc6f
PH
163817. A "Completed" log line is now written for messages that are removed from
1639 the spool by the -Mrm option.
1640
2c7db3f5
PH
164118. New variables $sender_verify_failure and $recipient_verify_failure contain
1642 information about exactly what failed.
1643
3d235903
PH
164419. Added -dd to debug only the daemon process.
1645
7c7ad977
PH
164620. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1647 handles timeouts, both on the server side and network timeouts. Renamed the
1648 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1649
981756db
PH
165021. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1651 It is now set to "smtps".
1652
d4eb88df
PH
165322. $host_address is now set to the target address during the checking of
1654 ignore_target_hosts.
1655
165623. When checking ignore_target_hosts for an ipliteral router, no host name was
1657 being passed; this would have caused $sender_host_name to have been used if
1658 matching the list had actually called for a host name (not very likely,
1659 since this list is usually IP addresses). A host name is now passed as
1660 "[x.x.x.x]".
1661
7d468ab8
PH
166224. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1663 code that specifies a non-restarting handler (typically sigaction() in
1664 modern systems) in an attempt to fix a rare and obscure crash bug.
1665
166625. Narrowed the window for a race in the daemon that could cause it to ignore
1667 SIGCHLD signals. This is not a major problem, because they are used only to
1668 wake it up if nothing else does.
1669
62c0818f
PH
167026. A malformed maildirsize file could cause Exim to calculate negative values
1671 for the mailbox size or file count. Odd effects could occur as a result.
1672 The maildirsize information is now recalculated if the size or filecount
1673 end up negative.
1674
26034054
PH
167527. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1676 support for a long time. Removed HAVE_SYS_VFS_H.
1677
af66f652
PH
167828. Installed the latest version of exipick from John Jetmore.
1679
90af77f4
PH
168029. In an address list, if the pattern was not a regular expression, an empty
1681 subject address (from a bounce message) matched only if the pattern was an
1682 empty string. Non-empty patterns were not even tested. This was the wrong
1683 because it is perfectly reasonable to use an empty address as part of a
1684 database query. An empty address is now tested by patterns that are
1685 lookups. However, all the other forms of pattern expect the subject to
1686 contain a local part and a domain, and therefore, for them, an empty
1687 address still always fails if the pattern is not itself empty.
1688
d8ef3577
PH
168930. Exim went into a mad DNS loop when attempting to do a callout where the
1690 host was specified on an smtp transport, and looking it up yielded more
1691 than one IP address.
1692
5cb8cbc6
PH
169331. Re-factored the code for checking spool and log partition space into a
1694 function that finds that data and another that does the check. The former
1695 is then used to implement four new variables: $spool_space, $log_space,
1696 $spool_inodes, and $log_inodes.
1697
14702f5b
PH
169832. The RFC2047 encoding function was originally intended for short strings
1699 such as real names; it was not keeping to the 75-character limit for
1700 encoded words that the RFC imposes. It now respects the limit, and
1701 generates multiple encoded words if necessary. To be on the safe side, I
1702 have increased the buffer size for the ${rfc2047: expansion operator from
1703 1024 to 2048 bytes.
1704
063b1e99
PH
170533. It is now permitted to omit both strings after an "if" condition; if the
1706 condition is true, the result is "true". As before, when the second string
1707 is omitted, a false condition yields an empty string. This makes it less
1708 cumbersome to write custom ACL and router conditions.
1709
652e1b65
PH
171034. Failure to deliver a bounce message always caused it to be frozen, even if
1711 there was an errors_to setting on the router. The errors_to setting is now
1712 respected.
1713
6f0c9a4f
PH
171435. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1715 canonical form (fully expanded) before being placed in
1716 $sender_host_address.
1717
33397d19
PH
171836. The table in the code that translates DNS record types into text (T_A to
1719 "A" for instance) was missing entries for NS and CNAME. It is just possible
1720 that this could have caused confusion if both these types were looked up
1721 for the same domain, because the text type is used as part of Exim's
1722 per-process caching. But the chance of anyone hitting this buglet seems
1723 very small.
1724
7bb56e1f
PH
172537. The dnsdb lookup has been extended in a number of ways.
1726
1727 (1) There is a new type, "zns", which walks up the domain tree until it
1728 finds some nameserver records. It should be used with care.
1729
ea3bc19b
PH
1730 (2) There is a new type, "mxh", which is like "mx" except that it returns
1731 just the host names, not the priorities.
1732
1733 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1734 looked up. The behaviour when one of the lookups defers can be
1735 controlled by a keyword.
7bb56e1f 1736
ea3bc19b 1737 (4) It is now possible to specify the separator character for use when
7bb56e1f 1738 multiple records are returned.
33397d19 1739
0bcb2a0e
PH
174038. The dnslists ACL condition has been extended: it is now possible to supply
1741 a list of IP addresses and/or domains to be looked up in a particular DNS
1742 domain.
1743
2ac0e484
PH
174439. Added log_selector=+queue_time_overall.
1745
4e1fde53
PH
174640. When running the queue in the test harness, wait just a tad after forking a
1747 delivery process, to get repeatability of debugging output.
1748
de365ded
PH
174941. Include certificate and key file names in error message when GnuTLS fails
1750 to set them up, because the GnuTLS error message doesn't include the name
1751 of the failing file when there is a problem reading it.
1752
f05da2e8
PH
175342. Allow both -bf and -bF in the same test run.
1754
d6453af2
PH
175543. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1756
f7b63901
PH
175744. The "Exiscan patch" is now merged into the mainline Exim source.
1758
175945. Sometimes the final signoff response after QUIT could fail to get
1760 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1761 < 0 before doing a fflush(). This bug looks as though it goes back to the
1762 introduction of TLS in release 3.20, but "sometimes" must have been rare
1763 because the tests only now provoked it.
1764
a444213a
PH
176546. Reset the locale to "C" after calling embedded Perl, in case it was changed
1766 (this can affect the format of dates).
1767
0ec020ea
PH
176847. exim_tidydb, when checking for the continued existence of a message for
1769 which it has found a message-specific retry record, was not finding
1770 messages that were in split spool directories. Consequently, it was
1771 deleting retry records that should have stayed in existence.
1772
b1206957
PH
177348. Steve fixed some bugs in eximstats.
1774
177549. The SPA authentication driver was not abandoning authentication and moving
1776 on to the next authenticator when an expansion was forced to fail,
1777 contradicting the general specification for all authenticators. Instead it
1778 was generating a temporary error. It now behaves as specified.
1779
26dd5a95
PH
178050. The default ordering of permitted cipher suites for GnuTLS was pessimal
1781 (the order specifies the preference for clients). The order is now AES256,
1782 AES128, 3DES, ARCFOUR128.
1783
343b2385
PH
178451. Small patch to Sieve code - explicitly set From: when generating an
1785 autoreply.
1786
1c5466b9
PH
178752. Exim crashed if a remote delivery caused a very long error message to be
1788 recorded - for instance if somebody sent an entire SpamAssassin report back
1789 as a large number of 550 error lines. This bug was coincidentally fixed by
1790 increasing the size of one of Exim's internal buffers (big_buffer) that
1791 happened as part of the Exiscan merge. However, to be on the safe side, I
1792 have made the code more robust (and fixed the comments that describe what
1793 is going on).
1794
55ee9ee3
PH
179553. Now that there can be additional text after "Completed" in log lines (if
1796 the queue_time_overall log selector is set), a one-byte patch to exigrep
1797 was needed to allow it to recognize "Completed" as not the last thing in
1798 the line.
1799
d38f8232
PH
180054. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1801 patch that reportedly fixes this has been added. I am not expert enough to
1802 create a test for it. This is what the patch creator wrote:
1803
1804 "I found a little strange behaviour of ldap code when working with
1805 Windows 2003 AD Domain, where users was placed in more than one
1806 Organization Units. When I tried to give exim partial DN, the exit code
1807 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1808 But simultaneously result of request was absolutely normal ldap result,
1809 so I produce this patch..."
1810
3295e65b
PH
1811 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1812 REFERENCE, so I have modified the code to exclude the patch when that macro
1813 is not defined.
1814
7102e136
PH
181555. Some experimental protocols are using DNS PTR records for new purposes. The
1816 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1817 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1818 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1819 CAN-2005-0021
7102e136 1820
3ca0ba97
PH
182156. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1822
c2bcbe20
PH
182357. Double the size of the debug message buffer (to 2048) so that more of very
1824 long debug lines gets shown.
1825
18ce445d
PH
182658. The exicyclog utility now does better if the number of log files to keep
1827 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1828
1f5b4c3d
PH
182959. Two changes related to the smtp_active_hostname option:
1830
1831 (1) $smtp_active_hostname is now available as a variable.
1832 (2) The default for smtp_banner uses $smtp_active_hostname instead
1833 of $primary_hostname.
1834
b975ba52
PH
183560. The host_aton() function is supposed to be passed a string that is known
1836 to be a valid IP address. However, in the case of IPv6 addresses, it was
1837 not checking this. This is a hostage to fortune. Exim now panics and dies
1838 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1839 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1840 components; fortuitously, this particular loophole had already been fixed
1841 by change 4.50/55 above.
1842
1843 If there are any other similar loopholes, the new check in host_aton()
1844 itself should stop them being exploited. The report I received stated that
1845 data on the command line could provoke the exploit when Exim was running as
1846 exim, but did not say which command line option was involved. All I could
1847 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1848 running as the user.
ea3a6f44 1849 CAN-2005-0021
85b87bc2
PH
1850
185161. There was a buffer overflow vulnerability in the SPA authentication code
1852 (which came originally from the Samba project). I have added a test to the
1853 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1854 CAN-2005-0022
b975ba52 1855
17ffcae7
PH
185662. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1857 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1858
d95f9fdb
PH
185963. The daemon start-up calls getloadavg() while still root for those OS that
1860 need the first call to be done as root, but it missed one case: when
1861 deliver_queue_load_max is set with deliver_drop_privilege. This is
1862 necessary for the benefit of the queue runner, because there is no re-exec
1863 when deliver_drop_privilege is set.
1864
86b8287f
PH
186564. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1866 This has been fixed.
1867
60dc5e56
PH
186865. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1869 was in use, was not putting the data itself into the right store pool;
1870 consequently, it could be overwritten for a subsequent message in the same
1871 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1872 the caching.)
1873
533244af
PH
187466. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1875
a5a28604
PH
187667. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1877 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1878 the function were treating the return as a boolean value, which happened to
1879 work because 0=false and not-0=true, but is not correct code.
1880
7e634d24
PH
188168. The host_aton() function was not handling scoped IPv6 addresses (those
1882 with, for example, "%eth0" on the end) correctly.
1883
3e11c26b
PH
188469. Fixed some compiler warnings in acl.c for the bitmaps specified with
1885 negated items (that is, ~something) in unsigned ints. Some compilers
1886 apparently mutter when there is no cast.
1887
6729cf78
PH
188870. If an address verification called from an ACL failed, and did not produce a
1889 user-specific message (i.e. there was only a "system" message), nothing was
1890 put in $acl_verify_message. In this situation, it now puts the system
1891 message there.
1892
00f00ca5
PH
189371. Change 4.23/11 added synchronization checking at the start of an SMTP
1894 session; change 4.31/43 added the unwanted input to the log line - except
1895 that it did not do this in the start of session case. It now does.
1896
c9bdd01c
PH
189772. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1898 This is wrong and can cause the other end to generate a synchronization
1899 error if it is another Exim or anything else that does the synchronization
1900 check. A QUIT command is no longer sent after a timeout.
1901
d43194df
PH
190273. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1903 during host lookups.
1904
fe5b5d0b
PH
190574. The defer_ok option of callout verification was not working if it was used
1906 when verifying addresses in header lines, that is, for this case:
1907
1908 verify = header_sender/callout=defer_ok
1909
76a2d7ba
PH
191075. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1911 those file descriptors could be used for SMTP connections. If anything
1912 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1913 could be sent to the SMTP client, causing chaos. The daemon now opens
1914 stdin, stdout, and stderr to /dev/null when it puts itself into the
1915 background.
1916
191776. Arrange for output from Perl's "warn" command to be written to Exim's main
1918 log by default. The user can override this with suitable Perl magic.
1919
04f7d5b9
PH
192077. The use of log_message on a "discard" ACL verb, which is supposed to add to
1921 the log message when discard triggers, was not working for the DATA ACL or
1922 for the non-SMTP ACL.
1923
bc60667e
PH
192478. Error message wording change in sieve.c.
1925
bb6e88ff
PH
192679. If smtp_accept_max_per_host was set, the number of connections could be
1927 restricted to fewer than expected, because the daemon was trying to set up
1928 a new connection before checking whether the processes handling previous
1929 connections had finished. The check for completed processes is now done
1930 earlier. On busy systems, this bug wouldn't be noticed because something
1931 else would have woken the daemon, and it would have reaped the completed
1932 process earlier.
1933
1e70f85b
PH
193480. If a message was submitted locally by a user whose login name contained one
1935 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1936 It caused a spool format error. I have fixed the spool reading code. A
1937 related problem was that the "from" clause in the Received: line became
1938 illegal because of the space(s). It is now covered by ${quote_local_part.
1939
194081. Included the latest eximstats from Steve (adds average sizes to HTML Top
1941 tables).
1942
4e01f9d6
PH
194382. Updated OS/Makefile-AIX as per message from Mike Meredith.
1944
1ee1cef2
PH
194583. Patch from Sieve maintainer to fix unterminated string problem in
1946 "vacation" handling.
1947
6e2b4ccc
PH
194884. Some minor changes to the Linux configuration files to help with other
1949 OS variants using glibc.
1950
8e669ac1
PH
195185. One more patch for Sieve to update vacation handling to latest spec.
1952
495ae4b0 1953
bbe902f0
PH
1954----------------------------------------------------
1955See the note above about the 4.44 and 4.50 releases.
1956----------------------------------------------------
1957
1958
1959Exim version 4.44
1960-----------------
1961
1962 1. Change 4.43/35 introduced a bug that caused file counts to be
1963 incorrectly computed when quota_filecount was set in an appendfile
1964 transport
1965
1966 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1967 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1968 place.
1969
1970 3. Give more explanation in the error message when the command for a transport
1971 filter fails to execute.
1972
1973 4. There are several places where Exim runs a non-Exim command in a
1974 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1975 was being done only for the command run by the queryprogram router. It is
1976 now done for all such subprocesses. The other cases are: ${run, transport
1977 filters, and the commands run by the lmtp and pipe transports.
1978
1979 5. Some older OS have a limit of 256 on the maximum number of file
1980 descriptors. Exim was using setrlimit() to set 1000 as a large value
1981 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1982 systems. I've change it so that if it can't get 1000, it tries for 256.
1983
1984 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1985 was an oversight, and furthermore, ever since the addition of extra
1986 controls (e.g. 4.43/32), the checks on when to allow different forms of
1987 "control" were broken. There should now be diagnostics for all cases when a
1988 control that does not make sense is encountered.
1989
1990 7. $recipients is now available in the predata ACL (oversight).
1991
1992 8. Tidy the search cache before the fork to do a delivery from a message
1993 received from the command line. Otherwise the child will trigger a lookup
1994 failure and thereby defer the delivery if it tries to use (for example) a
1995 cached ldap connection that the parent has called unbind on.
1996
1997 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1998 of $address_data from the recipient verification was clobbered by the
1999 sender verification.
2000
200110. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2002 was its contents. (It was OK if the option was not defined at all.)
2003
200411. A "Completed" log line is now written for messages that are removed from
2005 the spool by the -Mrm option.
2006
200712. $host_address is now set to the target address during the checking of
2008 ignore_target_hosts.
2009
201013. When checking ignore_target_hosts for an ipliteral router, no host name was
2011 being passed; this would have caused $sender_host_name to have been used if
2012 matching the list had actually called for a host name (not very likely,
2013 since this list is usually IP addresses). A host name is now passed as
2014 "[x.x.x.x]".
2015
201614. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2017 code that specifies a non-restarting handler (typically sigaction() in
2018 modern systems) in an attempt to fix a rare and obscure crash bug.
2019
202015. Narrowed the window for a race in the daemon that could cause it to ignore
2021 SIGCHLD signals. This is not a major problem, because they are used only to
2022 wake it up if nothing else does.
2023
202416. A malformed maildirsize file could cause Exim to calculate negative values
2025 for the mailbox size or file count. Odd effects could occur as a result.
2026 The maildirsize information is now recalculated if the size or filecount
2027 end up negative.
2028
202917. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2030 support for a long time. Removed HAVE_SYS_VFS_H.
2031
ea3a6f44 203218. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2033
203419. Allow an empty sender to be matched against a lookup in an address list.
2035 Previously the only cases considered were a regular expression, or an
2036 empty pattern.
2037
203820. Exim went into a mad DNS lookup loop when doing a callout where the
2039 host was specified on the transport, if the DNS lookup yielded more than
2040 one IP address.
2041
ea3a6f44
NM
204221. The RFC2047 encoding function was originally intended for short strings
2043 such as real names; it was not keeping to the 75-character limit for
2044 encoded words that the RFC imposes. It now respects the limit, and
2045 generates multiple encoded words if necessary. To be on the safe side, I
2046 have increased the buffer size for the ${rfc2047: expansion operator from
2047 1024 to 2048 bytes.
bbe902f0 2048
ea3a6f44
NM
204922. Failure to deliver a bounce message always caused it to be frozen, even if
2050 there was an errors_to setting on the router. The errors_to setting is now
2051 respected.
bbe902f0
PH
2052
205323. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2054 canonical form (fully expanded) before being placed in
2055 $sender_host_address.
2056
205724. Updated eximstats to version 1.33
2058
ea3a6f44
NM
205925. Include certificate and key file names in error message when GnuTLS fails
2060 to set them up, because the GnuTLS error message doesn't include the name
2061 of the failing file when there is a problem reading it.
bbe902f0
PH
2062
206326. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2064 As per change 25.
bbe902f0 2065
ea3a6f44
NM
206627. Reset the locale to "C" after calling embedded Perl, in case it was changed
2067 (this can affect the format of dates).
bbe902f0 2068
ea3a6f44
NM
206928. exim_tidydb, when checking for the continued existence of a message for
2070 which it has found a message-specific retry record, was not finding
2071 messages that were in split spool directories. Consequently, it was
2072 deleting retry records that should have stayed in existence.
bbe902f0
PH
2073
207429. eximstats updated to version 1.35
2075 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2076 1.35 - bugfix such that pie charts by volume are generated correctly
2077
ea3a6f44
NM
207830. The SPA authentication driver was not abandoning authentication and moving
2079 on to the next authenticator when an expansion was forced to fail,
2080 contradicting the general specification for all authenticators. Instead it
2081 was generating a temporary error. It now behaves as specified.
bbe902f0 2082
ea3a6f44
NM
208331. The default ordering of permitted cipher suites for GnuTLS was pessimal
2084 (the order specifies the preference for clients). The order is now AES256,
2085 AES128, 3DES, ARCFOUR128.
bbe902f0 2086
ea3a6f44
NM
208731. Small patch to Sieve code - explicitly set From: when generating an
2088 autoreply.
bbe902f0 2089
ea3a6f44
NM
209032. Exim crashed if a remote delivery caused a very long error message to be
2091 recorded - for instance if somebody sent an entire SpamAssassin report back
2092 as a large number of 550 error lines. This bug was coincidentally fixed by
2093 increasing the size of one of Exim's internal buffers (big_buffer) that
2094 happened as part of the Exiscan merge. However, to be on the safe side, I
2095 have made the code more robust (and fixed the comments that describe what
2096 is going on).
bbe902f0 2097
ea3a6f44
NM
209833. Some experimental protocols are using DNS PTR records for new purposes. The
2099 keys for these records are domain names, not reversed IP addresses. The
2100 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2101 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2102 CAN-2005-0021
2103
ea3a6f44
NM
210434. The host_aton() function is supposed to be passed a string that is known
2105 to be a valid IP address. However, in the case of IPv6 addresses, it was
2106 not checking this. This is a hostage to fortune. Exim now panics and dies
2107 if the condition is not met. A case was found where this could be provoked
2108 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2109 components; fortuitously, this particular loophole had already been fixed
2110 by change 4.50/55 or 4.44/33 above.
2111
2112 If there are any other similar loopholes, the new check in host_aton()
2113 itself should stop them being exploited. The report I received stated that
2114 data on the command line could provoke the exploit when Exim was running as
2115 exim, but did not say which command line option was involved. All I could
2116 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2117 running as the user.
bbe902f0
PH
2118 CAN-2005-0021
2119
ea3a6f44
NM
212035. There was a buffer overflow vulnerability in the SPA authentication code
2121 (which came originally from the Samba project). I have added a test to the
2122 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2123 CAN-2005-0022
2124
ea3a6f44
NM
212536. The daemon start-up calls getloadavg() while still root for those OS that
2126 need the first call to be done as root, but it missed one case: when
2127 deliver_queue_load_max is set with deliver_drop_privilege. This is
2128 necessary for the benefit of the queue runner, because there is no re-exec
2129 when deliver_drop_privilege is set.
bbe902f0 2130
ea3a6f44
NM
213137. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2132 was in use, was not putting the data itself into the right store pool;
2133 consequently, it could be overwritten for a subsequent message in the same
2134 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2135 the caching.)
bbe902f0 2136
ea3a6f44
NM
213738. Sometimes the final signoff response after QUIT could fail to get
2138 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2139 < 0 before doing a fflush(). This bug looks as though it goes back to the
2140 introduction of TLS in release 3.20, but "sometimes" must have been rare
2141 because the tests only now provoked it.
bbe902f0
PH
2142
2143
495ae4b0
PH
2144Exim version 4.43
2145-----------------
2146
2147 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2148 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2149 Now it returns an integer. A number of calls were still expecting a T/F
2150 return. Fortuitously, in all cases, the tests worked in OK situations,
2151 which is the norm. However, things would have gone wrong on any write
2152 failures on the smtp file descriptor. This function is used when sending
2153 messages over SMTP and also when doing verify callouts.
2154
2155 2. When Exim is called to do synchronous delivery of a locally submitted
2156 message (the -odf or -odi options), it no longer closes stderr before doing
2157 the delivery.
2158
2159 3. Implemented the mua_wrapper option.
2160
2161 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2162
2163 5. Implemented the functions header_remove(), header_testname(),
2164 header_add_at_position(), and receive_remove_recipient(), and exported them
2165 to local_scan().
2166
2167 6. If an ACL "warn" statement specified the addition of headers, Exim already
2168 inserted X-ACL-Warn: at the start if there was no header name. However, it
2169 was not making this test for the second and subsequent header lines if
2170 there were newlines in the string. This meant that an invalid header could
2171 be inserted if Exim was badly configured.
2172
2173 7. Allow an ACL "warn" statement to add header lines at the start or after all
2174 the Received: headers, as well as at the end.
2175
2176 8. Added the rcpt_4xx retry error code.
2177
2178 9. Added postmaster_mailfrom=xxx to callout verification option.
2179
218010. Added mailfrom=xxxx to the callout verification option, for verify=
2181 header_sender only.
2182
218311. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2184 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2185
218612. Inserted some casts to stop certain compilers warning when using pointer
2187 differences as field lengths or precisions in printf-type calls (mostly
2188 affecting debugging statements).
2189
219013. Added optional readline() support for -be (dynamically loaded).
2191
219214. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2193 same clock tick as a message's arrival, so that its received time was the
2194 same as the "first fail" time on the retry record, and that message
2195 remained on the queue past the ultimate address timeout, every queue runner
2196 would try a delivery (because it was past the ultimate address timeout) but
2197 after another failure, the ultimate address timeout, which should have then
2198 bounced the address, did not kick in. This was a "< instead of <=" error;
2199 in most cases the first failure would have been in the next clock tick
2200 after the received time, and all would be well.
2201
220215. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2203 being recognized when the domain list was tested by the match_domain
2204 condition in an expansion string.
2205
220616. Added the ${str2b64: operator.
2207
220817. Exim was always calling setrlimit() to set a large limit for the number of
2209 processes, without checking whether the existing limit was already
2210 adequate. (It did check for the limit on file descriptors.) Furthermore,
2211 errors from getrlimit() and setrlimit() were being ignored. Now they are
2212 logged to the main and panic logs, but Exim does carry on, to try to do its
2213 job under whatever limits there are.
2214
221518. Imported PCRE 5.0.
2216
221719. Trivial typo in log message " temporarily refused connection" (the leading
2218 space).
2219
222020. If the log selector return_path_on_delivery was set and an address was
2221 redirected to /dev/null, the delivery process crashed because it assumed
2222 that a return path would always be set for a "successful" delivery. In this
2223 case, the whole delivery is bypassed as an optimization, and therefore no
2224 return path is set.
2225
222621. Internal re-arrangement: the function for sending a challenge and reading
2227 a response while authentication was assuming a zero-terminated challenge
2228 string. It's now changed to take a pointer and a length, to allow for
2229 binary data in such strings.
2230
223122. Added the cyrus_sasl authenticator (code supplied by MBM).
2232
223323. Exim was not respecting finduser_retries when seeking the login of the
2234 uid under which it was called; it was always trying 10 times. (The default
2235 setting of finduser_retries is zero.) Also, it was sleeping after the final
2236 failure, which is pointless.
2237
223824. Implemented tls_on_connect_ports.
2239
224025. Implemented acl_smtp_predata.
2241
224226. If the domain in control=submission is set empty, Exim assumes that the
2243 authenticated id is a complete email address when it generates From: or
2244 Sender: header lines.
2245
224627. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2247 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2248 chown and chgrp in /bin and hostname in /usr/bin.
2249
225028. Exim was keeping the "process log" file open after each use, just as it
2251 does for the main log. This opens the possibility of it remaining open for
2252 long periods when the USR1 signal hits a daemon. Occasional processlog
2253 errors were reported, that could have been caused by this. Anyway, it seems
2254 much more sensible not to leave this file open at all, so that is what now
2255 happens.
2256
225729. The long-running daemon process does not normally write to the log once it
2258 has entered its main loop, and it closes the log before doing so. This is
2259 so that log files can straightforwardly be renamed and moved. However,
2260 there are a couple of unusual error situations where the daemon does write
2261 log entries, and I had neglected to close the log afterwards.
2262
226330. The text of an SMTP error response that was received during a remote
2264 delivery was being truncated at 512 bytes. This is too short for some of
2265 the long messages that one sometimes sees. I've increased the limit to
2266 1024.
2267
226831. It is now possible to make retry rules that apply only when a message has a
2269 specific sender, in particular, an empty sender.
2270
227132. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2272 it possible to be selective about when SMTP synchronization is enforced.
2273
227433. Added "control = caseful_local_part" and "control = "caselower_local_part".
2275
227632. Implemented hosts_connection_nolog.
2277
227833. Added an ACL for QUIT.
2279
228034. Setting "delay_warning=" to disable warnings was not working; it gave a
2281 syntax error.
2282
228335. Added mailbox_size and mailbox_filecount to appendfile.
2284
228536. Added control = no_multiline_responses to ACLs.
2286
228737. There was a bug in the logic of the code that waits for the clock to tick
2288 in the case where the clock went backwards by a substantial amount such
2289 that the microsecond fraction of "now" was more than the microsecond
2290 fraction of "then" (but the whole seconds number was less).
2291
229238. Added support for the libradius Radius client library this is found on
2293 FreeBSD (previously only the radiusclient library was supported).
2294
2295
2296Exim version 4.42
2297-----------------
2298
2299 1. When certain lookups returned multiple values in the form name=value, the
2300 quoting of the values was not always being done properly. Specifically:
2301 (a) If the value started with a double quote, but contained no whitespace,
2302 it was not quoted.
2303 (b) If the value contained whitespace other than a space character (i.e.
2304 tabs or newlines or carriage returns) it was not quoted.
2305 This fix has been applied to the mysql and pgsql lookups by writing a
2306 separate quoting function and calling it from the lookup code. The fix
2307 should probably also be applied to nisplus, ibase and oracle lookups, but
2308 since I cannot test any of those, I have not disturbed their existing code.
2309
2310 2. A hit in the callout cache for a specific address caused a log line with no
2311 reason for rejecting RCPT. Now it says "Previous (cached) callout
2312 verification failure".
2313
2314 3. There was an off-by-one bug in the queryprogram router. An over-long
2315 return line was truncated at 256 instead of 255 characters, thereby
2316 overflowing its buffer with the terminating zero. As well as fixing this, I
2317 have increased the buffer size to 1024 (and made a note to document this).
2318
2319 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2320 when Exim is waiting for an SMTP response from a remote server, Exim
2321 restarts its select() call on the socket, thereby resetting its timeout.
2322 This is not a problem when such interrupts are rare. Somebody set up a cron
2323 job to run exiwhat every 2 minutes, which is less than the normal select()
2324 timeout (5 or 10 minutes). This meant that the select() timeout never
2325 kicked in because it was always reset. I have fixed this by comparing the
2326 time when an interrupt arrives with the time at the start of the first call
2327 to select(). If more time than the timeout has elapsed, the interrupt is
2328 treated as a timeout.
2329
2330 5. Some internal re-factoring in preparation for the addition of Sieve
2331 extensions (by MH). In particular, the "personal" test is moved to a
2332 separate function, and given an option for scanning Cc: and Bcc: (which is
2333 not set for Exim filters).
2334
2335 6. When Exim created an email address using the login of the caller as the
2336 local part (e.g. when creating a From: or Sender: header line), it was not
2337 quoting the local part when it contained special characters such as @.
2338
2339 7. Installed new OpenBSD configuration files.
2340
2341 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2342 try to make them clearer.
2343
2344 9. Callout options, other than the timeout value, were being ignored when
2345 verifying sender addresses in header lines. For example, when using
2346
2347 verify = header_sender/callout=no_cache
2348
2349 the cache was (incorrectly) being used.
2350
235110. Added a missing instance of ${EXE} to the exim_install script; this affects
2352 only the Cygwin environment.
2353
235411. When return_path_on_delivery was set as a log selector, if different remote
2355 addresses in the same message used different return paths and parallel
2356 remote delivery occurred, the wrong values would sometimes be logged.
2357 (Whenever a remote delivery process finished, the return path value from
2358 the most recently started remote delivery process was logged.)
2359
236012. RFC 3848 specifies standard names for the "with" phrase in Received: header
2361 lines when AUTH and/or TLS are in use. This is the "received protocol"
2362 field. Exim used to use "asmtp" for authenticated SMTP, without any
2363 indication (in the protocol name) for TLS use. Now it follows the RFC and
2364 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2365 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2366 names appear in log lines as well as in Received: header lines.
2367
236813. Installed MH's patches for Sieve to add the "copy" and "vacation"
2369 extensions, and comparison tests, and to fix some bugs.
2370
237114. Changes to the "personal" filter test:
2372
2373 (1) The test was buggy in that it was just doing the equivalent of
2374 "contains" tests on header lines. For example, if a user's address was
2375 anne@some.where, the "personal" test would incorrectly be true for
2376
2377 To: susanne@some.where
2378
2379 This test is now done by extracting each address from the header in turn,
2380 and checking the entire address. Other tests that are part of "personal"
2381 are now done using regular expressions (for example, to check local parts
2382 of addresses in From: header lines).
2383
2384 (2) The list of non-personal local parts in From: addresses has been
2385 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2386 taken from the Sieve specification recommendations.
2387
2388 (3) If the message contains any header line starting with "List-" it is
2389 treated as non-personal.
2390
2391 (4) The test for "circular" in the Subject: header line has been removed
2392 because it now seems ill-conceived.
2393
239415. Minor typos in src/EDITME comments corrected.
2395
239616. Installed latest exipick from John Jetmore.
2397
239817. If headers_add on a router specified a text string that was too long for
2399 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2400 of string_sprintf() is now avoided.
2401
240218. $message_body_size was not set (it was always zero) when running the DATA
2403 ACL and the local_scan() function.
2404
240519. For the "mail" command in an Exim filter, no default was being set for
2406 the once_repeat time, causing a random time value to be used if "once" was
2407 specified. (If the value happened to be <= 0, no repeat happened.) The
2408 default is now 0s, meaning "never repeat". The "vacation" command was OK
2409 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2410 (I found it when inspecting the code).
2411
241220. There is now an overall timeout for performing a callout verification. It
2413 defaults to 4 times the callout timeout, which applies to individual SMTP
2414 commands during the callout. The overall timeout applies when there is more
2415 than one host that can be tried. The timeout is checked before trying the
2416 next host. This prevents very long delays if there are a large number of
2417 hosts and all are timing out (e.g. when the network connections are timing
2418 out). The value of the overall timeout can be changed by specifying an
2419 additional sub-option for "callout", called "maxwait". For example:
2420
2421 verify = sender/callout=5s,maxwait=20s
2422
242321. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2424 to the end before writing, but this should make it even safer).
2425
242622. Exim was forgetting that it had advertised PIPELINING for the second and
2427 subsequent messages on an SMTP connection. It was also not resetting its
2428 memory on STARTTLS and an internal HELO.
2429
243023. When Exim logs an SMTP synchronization error within a session, it now
2431 records whether PIPELINING has been advertised or not.
2432
243324. Added 3 instances of "(long int)" casts to time_t variables that were being
2434 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2435 rather than long int.
2436
243725. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2438
243926. Added the never_mail option to autoreply.
2440
2441
2442Exim version 4.41
2443-----------------
2444
2445 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2446 crash if the getsockname() call failed; this can happen if a connection is
2447 closed very soon after it is established. The problem was simply in the
2448 order in which certain operations were done, causing Exim to try to write
2449 to the SMTP stream before it had set up the file descriptor. The bug has
2450 been fixed by making things happen in the correct order.
2451
2452
2453Exim version 4.40
2454-----------------
2455
2456 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2457 before the connection was closed, thus losing the rejection response.
2458
2459 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2460 some early Solaris releases, but causes trouble in current releases where
2461 socklen_t is defined.
2462
2463 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2464 always exist.
2465
2466 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2467 configured.
2468
2469 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2470 that releasing the top of it at the end releases what was used for sub-
2471 expansions (unless the block got too big). However, discard this block if
2472 the first thing is a variable or header, so that we can use its block when
2473 it is dynamic (useful for very large $message_headers, for example).
2474
2475 6. Lookups now cache *every* query, not just the most recent. A new, separate
2476 store pool is used for this. It can be recovered when all lookup caches are
2477 flushed. Lookups now release memory at the end of their result strings.
2478 This has involved some general refactoring of the lookup sources.
2479
2480 7. Some code has been added to the store_xxx() functions to reduce the amount
2481 of flapping under certain conditions.
2482
2483 8. log_incoming_interface used to affect only the <= reception log lines. Now
2484 it causes the local interface and port to be added to several more SMTP log
2485 lines, for example "SMTP connection from", and rejection lines.
2486
2487 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2488
248910. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2490
249111. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2492 could be overwritten at the end of the current message (or the start of a
2493 new message if it was set in a HELO ACL). The value is now preserved for
2494 the duration of the SMTP connection.
2495
249612. If a transport had a headers_rewrite setting, and a matching header line
2497 contained an unqualified address, that address was qualified, even if it
2498 did not match any rewriting rules. The underlying bug was that the values
2499 of the flags that permit the existence of unqualified sender and recipient
2500 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2501 non-local messages, and by -bnq for local messages) were not being
2502 preserved with the message after it was received.
2503
250413. When Exim was logging an SMTP synchronization error, it could sometimes log
2505 "next input=" as part of the text comprising the host identity instead of
2506 the correct text. The code was using the same buffer for two different
2507 strings. However, depending on which order the printing function evaluated
2508 its arguments, the bug did not always show up. Under Linux, for example, my
2509 test suite worked just fine.
2510
251114. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2512 doesn't work with some older versions of Perl. It has been changed to "my",
2513 which in any case is probably the better facility to use.
2514
251515. A really picky compiler found some instances of statements for creating
2516 error messages that either had too many or two few arguments for the format
2517 string.
2518
251916. The size of the buffer for calls to the DNS resolver has been increased
2520 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2521 for addresses that have a lot of PTR records. This alleviates a problem; it
2522 does not fully solve it.
2523
252417. A dnsdb lookup for PTR records that receives more data than will fit in the
2525 buffer now truncates the list and logs the incident, which is the same
2526 action as happens when Exim is looking up a host name and its aliases.
2527 Previously in this situation something unpredictable would happen;
2528 sometimes it was "internal error: store_reset failed".
2529
253018. If a server dropped the connection unexpectedly when an Exim client was
2531 using GnuTLS and trying to read a response, the client delivery process
2532 crashed while trying to generate an error log message.
2533
253419. If a "warn" verb in an ACL added multiple headers to a message in a single
2535 string, for example:
2536
2537 warn message = H1: something\nH2: something
2538
2539 the text was added as a single header line from Exim's point of view
2540 though it ended up OK in the delivered message. However, searching for the
2541 second and subsequent header lines using $h_h2: did not work. This has been
2542 fixed. Similarly, if a system filter added multiple headers in this way,
2543 the routers could not see them.
2544
254520. Expanded the error message when iplsearch is called with an invalid key to
2546 suggest using net-iplsearch in a host list.
2547
254821. When running tests using -bh, any delays imposed by "delay" modifiers in
2549 ACLs are no longer actually imposed (and a message to that effect is
2550 output).
2551
255222. If a "gecos" field in a passwd entry contained escaped characters, in
2553 particular, if it contained a \" sequence, Exim got it wrong when building
2554 a From: or a Sender: header from that name. A second bug also caused
2555 incorrect handling when an unquoted " was present following a character
2556 that needed quoting.
2557
255823. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2559 was not being matched caselessly.
2560
256124. Arranged for all hyphens in the exim.8 source to be escaped with
2562 backslashes.
2563
256425. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2565 properly. Recipient callout cache records were still being keyed to include
2566 the sender, even when use_sender was set false. This led to far more
2567 callouts that were necessary. The sender is no longer included in the key
2568 when use_sender is false.
2569
257026. Added "control = submission" modifier to ACLs.
2571
257227. Added the ${base62d: operator to decode base 62 numbers.
2573
257428. dnsdb lookups can now access SRV records.
2575
257629. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2577 the configuration file.
2578
257930. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2580 (-v) mode. This makes the output for a verbose queue run more intelligible.
2581
258231. Added a use_postmaster feature to recipient callouts.
2583
258432. Added the $body_zerocount variable, containing the number of binary zero
2585 bytes in the message body.
2586
258733. The time of last modification of the "new" subdirectory is now used as the
2588 "mailbox time last read" when there is a quota error for a maildir
2589 delivery.
2590
259134. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2592
259335. Added +ignore_unknown as a special item in host lists.
2594
259536. Code for decoding IPv6 addresses in host lists is now included, even if
2596 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2597 address was recognized as an IP address, but was then not correctly decoded
2598 into binary, causing unexpected and incorrect effects when compared with
2599 another IP address.
2600
2601
2602Exim version 4.34
2603-----------------
2604
2605 1. Very minor rewording of debugging text in manualroute to say "list of
2606 hosts" instead of "hostlist".
2607
2608 2. If verify=header_syntax was set, and a header line with an unqualified
2609 address (no domain) and a large number of spaces between the end of the
2610 name and the colon was received, the reception process suffered a buffer
2611 overflow, and (when I tested it) crashed. This was caused by some obsolete
2612 code that should have been removed. The fix is to remove it!
2613
2614 3. When running in the test harness, delay a bit after writing a bounce
2615 message to get a bit more predictability in the log output.
2616
2617 4. Added a call to search_tidyup() just before forking a reception process. In
2618 theory, someone could use a lookup in the expansion of smtp_accept_max_
2619 per_host which, without the tidyup, could leave open a database connection.
2620
2621 5. Added the variables $recipient_data and $sender_data which get set from a
2622 lookup success in an ACL "recipients" or "senders" condition, or a router
2623 "senders" option, similar to $domain_data and $local_part_data.
2624
2625 6. Moved the writing of debug_print from before to after the "senders" test
2626 for routers.
2627
2628 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2629 problems for message scanning, either using a data ACL, or using
2630 local_scan() because the Received: header was not generated till after they
2631 were called (in order to set the time as the time of reception completion).
2632 I have revised the way this works. The header is now generated after the
2633 body is received, but before the ACL or local_scan() are called. After they
2634 are run, the timestamp in the header is updated.
2635
2636
2637Exim version 4.33
2638-----------------
2639
2640 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2641 before starting a queue runner without re-exec. This happened only when
2642 deliver_drop_privilege was set or when the Exim user was set to root. The
2643 effect of the bug was that timeouts during subsequent deliveries caused
2644 crashes instead of being properly handled. The handler is now left at its
2645 default (and expected) setting.
2646
2647 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2648 message, again when deliver_drop_privilege is set or Exim is run as root.
2649 The bug described in (1) was not present in this case, but the tidying up
2650 of the other signals was missing. I have made the two cases consistent.
2651
2652 3. The ignore_target_hosts setting on a manualroute router was being ignored
2653 for hosts that were looked up using the /MX notation.
2654
2655 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2656 in domain lists.
2657
2658 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2659 operated on the sender address. After changing the $sender_address to <>
2660 for the sender address verify, Exim was re-instated it as the original
2661 (before rewriting) address, but remembering that it had rewritten it, so it
2662 wasn't rewriting it again. This bug also had the effect of breaking the
2663 sender address verification caching when the sender address was rewritten.
2664
2665 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2666 This has been changed so that if the ip literal address matches
2667 ignore_target_hosts, the router declines.
2668
2669 7. Added expansion conditions match_domain, match_address, and match_local_
2670 part (NOT match_host).
2671
2672 8. The placeholder for the Received: header didn't have a length field set.
2673
2674 9. Added code to Exim itself and to exim_lock to test for a specific race
2675 condition that could lead to file corruption when using MBX delivery. The
2676 issue is with the lockfile that is created in /tmp. If this file is removed
2677 after a process has opened it but before that process has acquired a lock,
2678 there is the potential for a second process to recreate the file and also
2679 acquire a lock. This could lead to two Exim processes writing to the file
2680 at the same time. The added code performs the same test as UW imapd; it
2681 checks after acquiring the lock that its file descriptor still refers to
2682 the same named file.
2683
268410. The buffer for building added header lines was of fixed size, 8192 bytes.
2685 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2686 when Exim is built.
2687
268811. Added the smtp_active_hostname option. If used, this will typically be made
2689 to depend on the incoming interface address. Because $interface_address is
2690 not set up until the daemon has forked a reception process, error responses
2691 that can happen earlier (such as "too many connections") no longer contain
2692 a host name.
2693
269412. If an expansion in a condition on a "warn" statement fails because a lookup
2695 defers, the "warn" statement is abandoned, and the next ACL statement is
2696 processed. Previously this caused the whole ACL to be aborted.
2697
269813. Added the iplsearch lookup type.
2699
270014. Added ident_timeout as a log selector.
2701
270215. Added tls_certificate_verified as a log selector.
2703
270416. Added a global option tls_require_ciphers (compare the smtp transport
2705 option of the same name). This controls incoming TLS connections.
2706
270717. I finally figured out how to make tls_require_ciphers do a similar thing
2708 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2709 before starting the TLS session.
2710
271118. Tabs are now shown as \t in -bP output.
2712
271319. If the log selector return_path_on_delivery was set, Exim crashed when
2714 bouncing a message because it had too many Received: header lines.
2715
271620. If two routers both had headers_remove settings, and the first one included
2717 a superfluous trailing colon, the final name in the first list and the
2718 first name in the second list were incorrectly joined into one item (with a
2719 colon in the middle).
2720
2721
2722Exim version 4.32
2723-----------------
2724
2725 1. Added -C and -D options to the exinext utility, mainly to make it easier
2726 to include in the automated testing, but these could be helpful when
2727 multiple configurations are in use.
2728
2729 2. The exinext utility was not formatting the output nicely when there was
2730 an alternate port involved in the retry record key, nor when there was a
2731 message id as well (for retries that were specific to a specific message
2732 and a specific host). It was also confused by IPv6 addresses, because of
2733 the additional colons they contain. I have fixed the IPv4 problem, and
2734 patched it up to do a reasonable job for IPv6.
2735
2736 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2737 delivery, the log line now contains "pipelined" if PIPELINING was used.
2738
2739 4. An SMTP transport process used to panic and die if the bind() call to set
2740 an explicit outgoing interface failed. This has been changed; it is now
2741 treated in the same way as a connect() failure.
2742
2743 5. A reference to $sender_host_name in the part of a conditional expansion
2744 that was being skipped was still causing a DNS lookup. This no longer
2745 occurs.
2746
2747 6. The def: expansion condition was not recognizing references to header lines
2748 that used bh_ and bheader_.
2749
2750 7. Added the _cache feature to named lists.
2751
2752 8. The code for checking quota_filecount in the appendfile transport was
2753 allowing one more file than it should have been.
2754
2755 9. For compatibility with Sendmail, the command line option
2756
2757 -prval:sval
2758
2759 is equivalent to
2760
2761 -oMr rval -oMs sval
2762
2763 and sets the incoming protocol and host name (for trusted callers). The
2764 host name and its colon can be omitted when only the protocol is to be set.
2765 Note the Exim already has two private options, -pd and -ps, that refer to
2766 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2767 "s", but I don't think that's a major issue.
2768
276910. A number of refactoring changes to the code, none of which should affect
2770 Exim's behaviour:
2771
2772 (a) The number of logging options was getting close to filling up the
2773 32-bit word that was used as a bit map. I have split them into two classes:
2774 those that are passed in the argument to log_write(), and those that are
2775 only ever tested independently outside of that function. These are now in
2776 separate 32-bit words, so there is plenty of room for expansion again.
2777 There is no change in the user interface or the logging behaviour.
2778
2779 (b) When building, for example, log lines, the code previously used a
2780 macro that called string_cat() twice, in order to add two strings. This is
2781 not really sufficiently general. Furthermore, there was one instance where
2782 it was actually wrong because one of the argument was used twice, and in
2783 one call a function was used. (As it happened, calling the function twice
2784 did not affect the overall behaviour.) The macro has been replaced by a
2785 function that can join an arbitrary number of extra strings onto a growing
2786 string.
2787
2788 (c) The code for expansion conditions now uses a table and a binary chop
2789 instead of a serial search (which was left over from when there were very
2790 few conditions). Also, it now recognizes conditions like "pam" even when
2791 the relevant support is not compiled in: a suitably worded error message is
2792 given if an attempt is made to use such a condition.
2793
279411. Added ${time_interval:xxxxx}.
2795
279612. A bug was causing one of the ddress fields not to be passed back correctly
2797 from remote delivery subprocesses. The field in question was not being
2798 subsequently used, so this caused to problems in practice.
2799
280013. Added new log selectors queue_time and deliver_time.
2801
280214. Might have fixed a bug in maildirsizefile handling that threw up
2803 "unexpected character" debug warnings, and recalculated the data
2804 unnecessarily. In any case, I expanded the warning message to give more
2805 information.
2806
280715. Added the message "Restricted characters in address" to the statements in
2808 the default ACL that block characters like @ and % in local parts.
2809
281016. Change 71 for release 4.31 proved to be much less benign that I imagined.
2811 Three changes have been made:
2812
2813 (a) There was a serious bug; a negative response to MAIL caused the whole
2814 recipient domain to be cached as invalid, thereby blocking all messages
2815 to all local parts at the same domain, from all senders. This bug has
2816 been fixed. The domain is no longer cached after a negative response to
2817 MAIL if the sender used is not empty.
2818
2819 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2820 been restored.
2821
2822 (c) A new callout option, "use_sender" has been added for people who want
2823 the modified behaviour.
2824
2825
2826Exim version 4.31
2827-----------------
2828
2829 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2830 Larry Rosenman.
2831
2832 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2833 indeed breaks things for older releases.
2834
2835 3. Added additional logging to the case where there is a problem reading data
2836 from a filter that is running in a subprocess using a pipe, in order to
2837 try to track down a specific problem.
2838
2839 4. Testing facility fudge: when running in the test harness and attempting
2840 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2841 getting "No route to host". Convert this to a timeout.
2842
2843 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2844 warning.
2845
2846 6. Some OS don't have socklen_t but use size_t instead. This affects the
2847 fifth argument of getsockopt() amongst other things. This is now
2848 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2849 can be set for individual OS. I have set it for SunOS5, OSF1, and
2850 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2851 some earlier ones do not.
2852
2853 7. Change 4.30/15 was not doing the test caselessly.
2854
2855 8. The standard form for an IPv6 address literal was being rejected by address
2856 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2857 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2858 this, as well as the form without the "IPv6" on the front (but only when
2859 address literals are enabled, of course).
2860
2861 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2862
286310. Exim crashed if a message with an empty sender address specified by -f
2864 encountered a router with an errors_to setting. This could be provoked only
2865 by a command such as
2866
2867 exim -f "" ...
2868
2869 where an empty string was supplied; "<>" did not hit this bug.
2870
287111. Installed PCRE release 4.5.
2872
287312. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2874 remained set. It is now erased.
2875
287613. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2877 times from message ids (which are base 36 rather than the normal 62).
2878
287914. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2880 were being counted as actual protocol errors, and logged if the log
2881 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2882 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2883 and DATA following a set of rejected RCPTs do not count as protocol errors.
2884 In other words, Exim assumes they were pipelined, though this may not
2885 actually be the case. Of course, in all cases the client gets an
2886 appropriate error code.
2887
288815. If a lookup fails in an ACL condition, a message about the failure may
2889 be available; it is used if testing the ACL cannot continue, because most
2890 such messages specify what the cause of the deferral is. However, some
2891 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2892 that caused an old message to be retained and used if a later statement
2893 caused a defer, replacing the real cause of the deferral.
2894
289516. If an IP address had so many PTR records that the DNS lookup buffer
2896 was not large enough to hold them, Exim could crash while trying to process
2897 the truncated data. It now detects and logs this case.
2898
289917. Further to 4.21/58, another change has been made: if (and only if) the
2900 first line of a message (the first header line) ends with CRLF, a bare LF
2901 in a subsequent header line has a space inserted after it, so as not to
2902 terminate the header.
2903
290418. Refactoring: tidied an ugly bit of code in appendfile that copied data
2905 unnecessarily, used atoi() instead of strtol(), and didn't check the
2906 termination when getting file sizes from file names by regex.
2907
290819. Completely re-implemented the support for maildirsize files, in the light
2909 of a number of problems with the previous contributed implementation
2910 (4.30/29). In particular:
2911
2912 . If the quota is zero, the maildirsize file is maintained, but no quota is
2913 imposed.
2914
2915 . If the maildir directory does not exist, it is created before any attempt
2916 to write a maildirsize file.
2917
2918 . The quota value in the file is just a cache; if the quota is changed in
2919 the transport, the new value overrides.
2920
2921 . A regular expression is available for excluding directories from the
2922 count.
2923
292420. The autoreply transport checks the characters in options that define the
2925 message's headers; it allows continued headers, but it was checking with
2926 isspace() after an embedded newline instead of explicitly looking for a
2927 space or a tab.
2928
292921. If all the "regular" hosts to which an address was routed had passed their
2930 expiry times, and had not reached their retry times, the address was
2931 bounced, even if fallback hosts were defined. Now Exim should go on to try
2932 the fallback hosts.
2933
293422. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2935 equivalent code in the SMTP transport. Some hosts send humungous responses
2936 to HELO/EHLO, more than 1024 it seems.
2937
293823. Refactoring: code in filter.c used (void *) for "any old type" but this
2939 gives compiler warnings in some environments. I've now done it "properly",
2940 using a union.
2941
294224. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2943 (because of problems with the built-in one) was declared to return uschar *
2944 instead of char *, causing compiler failure.
2945
294625. Fixed a file descriptor leak when processing alias/forward files.
2947
294826. Fixed a minor format string issue in dbfn.c.
2949
295027. Typo in exim.c: ("dmbnz" for "dbmnz").
2951
295228. If a filter file refered to $h_xxx or $message_headers, and the headers
2953 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2954 become corrupted.
2955
295629. When a sender address is verified, it is cached, to save repeating the test
2957 when there is more than one recipient in a message. However, when the
2958 verification involves a callout, it is possible for different callout
2959 options to be set for different recipients. It is too complicated to keep
2960 track of this in the cache, so now Exim always runs a verification when a
2961 callout is required, relying on the callout cache for the optimization.
2962 The overhead is duplication of the address routing, but this should not be
2963 too great.
2964
296530. Fixed a bug in callout caching. If a RCPT command caused the sender address
2966 to be verified with callout=postmaster, and the main callout worked but the
2967 postmaster check failed, the verification correctly failed. However, if a
2968 subsequent RCPT command asked for sender verification *without* the
2969 postmaster check, incorrect caching caused this verification also to fail,
2970 incorrectly.
2971
297231. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2973 it was not caching the DNS options (qualify_single, search_parents) that
2974 were used when the lookup failed. A subsequent lookup with different
2975 options therefore always gave the same answer, though there were cases
2976 where it should not have. (Example: a "domains = !$mx_any" option on a
2977 dnslookup router: the "domains" option is always processed without any
2978 widening, but the router might have qualify_single set.) Now Exim uses the
2979 cached value only when the same options are set.
2980
298132. Added John Jetmore's "exipick" utility to the distribution.
2982
298333. GnuTLS: When an attempt to start a TLS session fails for any reason other
2984 than a timeout (e.g. a certificate is required, and is not provided), an
2985 Exim server now closes the connection immediately. Previously it waited for
2986 the client to close - but if the client is SSL, it seems that they each
2987 wait for each other, leading to a delay before one of them times out.
2988
298934: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2990 maintained 0.8.x compatibility because I don't think many are using it, and
2991 it is clearly obsolete.
2992
299335. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2994 transport.
2995
299636. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2997 client certificate was expired. A simple patch fixes this, though I don't
2998 understand the full logic of why the verify callback is called multiple
2999 times.
3000
300137. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3002 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3003 which causes problems with some clients (such as the Certicom SSL Plus
3004 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3005 disables the coutermeasure allowing Eudora to connect."
3006
300738. Exim was not checking that a write() to a log file succeeded. This could
3008 lead to Bad Things if a log got too big, in particular if it hit a file
3009 size limit. Exim now panics and dies if it cannot write to a log file, just
3010 as it does if it cannot open a log file.
3011
301239. Modified OS/Makefile-Linux so that it now contains
3013
3014 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3015
3016 The two -D definitions ensure that Exim is compiled with large file
3017 support, which makes it possible to handle log files that are bigger than
3018 2^31.
3019
302040. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3021 instance) a domain was checked against a named list that involved a lookup,
3022 causing $domain_data to be set, then another domain was checked against the
3023 same list, then the first domain was re-checked, the value of $domain_data
3024 after the final check could be wrong. In particular, if the second check
3025 failed, it could be set empty. This bug probably also applied to
3026 $localpart_data.
3027
302841. The strip_trailing_dot option was not being applied to the address given
3029 with the -f command-line option.
3030
303142. The code for reading a message's header from the spool was incrementing
3032 $received_count, but never initializing it. This meant that the value was
3033 incorrect (doubled) while delivering a message in the same process in which
3034 it was received. In the most common configuration of Exim, this never
3035 happens - a fresh exec is done - but it can happen when
3036 deliver_drop_privilege is set.
3037
303843. When Exim logs an SMTP synchronization error - client data sent too soon -
3039 it now includes up to 150 characters of the unexpected data in the log
3040 line.
3041
304244. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3043 and building data strings. The size of both of these buffers was 10 000
3044 bytes - far larger than anybody would *ever* want, thought I. Needless to
3045 say, somebody hit the limit. I have increased the maximum line length to
3046 20 000 and the maximum data length of concatenated lines to 100 000. I have
3047 also fixed two bugs, because there was no checking on these buffers. Tsk,
3048 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3049 buffer is too small.
3050
305145. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3052 lsearch lookups. Now it does.
3053
305446. When parsing a route_list item in a manualroute router, a fixed-length
3055 buffer was used for the list of hosts. I made this 1024 bytes long,
3056 thinking that nobody would ever have a list of hosts that long. Wrong.
3057 Somebody had a whole pile of complicated expansion conditions, and the
3058 string was silently truncated, leading to an expansion error. It turns out
3059 that it is easier to change to an unlimited length (owing to other changes
3060 that have happened since this code was originally written) than to build
3061 structure for giving a limitation error. The length of the item that
3062 expands into the list of hosts is now unlimited.
3063
306447. The lsearch lookup could not handle data where the length of text line was
3065 more than 4095 characters. Such lines were truncated, leading to shortened
3066 data being returned. It should now handle lines of any length.
3067
306848. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3069 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3070 ACL").
3071
307249. Cosmetic tidy to scripts like exicyclog that are generated by globally
3073 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3074 no longer happens in comment lines. A list of replacements is now placed
3075 at the head of all of the source files, except those whose only change is
3076 to replace PERL_COMMAND in the very first #! line.
3077
307850. Replaced the slow insertion sort in queue.c, for sorting the list of
3079 messages on the queue, with a bottom-up merge sort, using code contributed
3080 by Michael Haardt. This should make operations like -bp somewhat faster on
3081 large queues. It won't affect queue runners, except when queue_run_in_order
3082 is set.
3083
308451. Installed eximstats 1.31 in the distribution.
3085
308652. Added support for SRV lookups to the dnslookup router.
3087
308853. If an ACL referred to $message_body or $message_body_end, the value was not
3089 reset for any messages that followed in the same SMTP session.
3090
309154. The store-handling optimization for building very long strings was not
3092 differentiating between the different store pools. I don't think this
3093 actually made any difference in practice, but I've tidied it.
3094
309555. While running the routers to verify a sender address, $sender_address
3096 was still set to the sender address. This is wrong, because when routing to
3097 send a bounce to the sender, it would be empty. Therefore, I have changed
3098 it so that, while verifying a sender address, $sender_address is set to <>.
3099 (There is no change to what happens when verifying a recipient address.)
3100
310156. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3102 target A or AAAA records (if not already returned) without resetting the
3103 qualify_single or search_parents options of the DNS resolver. These are
3104 inappropriate in this case because the targets of MX and SRV records must
3105 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3106 target that, when qualified, matched something in the local domain. These
3107 two options are now turned off when doing these lookups.
3108
310957. It seems that at least some releases of Reiserfs (which does not have the
3110 concept of a fixed number of inodes) returns zero and not -1 for the
3111 number of available inodes. This interacted badly with check_spool_inodes,
3112 which assumed that -1 was the "no such thing" setting. What I have done is
3113 to check that the total number of inodes is greater than zero before doing
3114 the test of how many are available.
3115
311658. When a "warn" ACL statement has a log_message modifier, the message is
3117 remembered, and not repeated. This is to avoid a lot of repetition when a
3118 message has many recipients that cause the same warning to be written.
3119 Howewer, Exim was preserving the list of already written lines for an
3120 entire SMTP session, which doesn't seem right. The memory is now reset if a
3121 new message is started.
3122
312359. The "rewrite" debugging flag was not showing the result of rewriting in the
3124 debugging output unless log_rewrite was also set.
3125
312660. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3127 of (int)(handle) when we know that handle contains (void *)(-1).
3128
312961. The Exim daemon panic-logs an error return when it closes the incoming
3130 connection. However "connection reset by peer" seems to be common, and
3131 isn't really an error worthy of noting specially, so that particular error
3132 is no long logged.
3133
313462. When Exim is trying to find all the local interfaces, it used to panic and
3135 die if the ioctl to get the interface flags failed. However, it seems that
3136 on at least one OS (Solaris 9) it is possible to have an interface that is
3137 included in the list of interfaces, but for which you get a failure error
3138 for this call. This happens when the interface is not "plumbed" into a
3139 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3140 failure of the "get flags" call assumes that the interface is down.
3141
314263. Added a ${eval10: operator, which assumes all numbers are decimal. This
3143 makes life easier for people who are doing arithmetic on fields extracted
3144 from dates, where you often get leading zeros that should not be
3145 interpreted as octal.
3146
314764. Added qualify_domain to the redirect router, to override the global
3148 setting.
3149
315065. If a pathologically long header line contained very many addresses (the
3151 report of this problem mentioned 10 000) and each of them was rewritten,
3152 Exim could use up a very large amount of memory. (It kept on making new
3153 copies of the header line as it rewrote, and never released the old ones.)
3154 At the expense of a bit more processing, the header rewriting function has
3155 been changed so that it no longer eats memory in this way.
3156
315766. The generation of the Received: header has been moved from the time that a
3158 message starts to be received, to the time that it finishes. The timestamp
3159 in the Received: header should now be very close to that of the <= log
3160 line. There are two side-effects of this change:
3161
3162 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3163 logged header lines no longer include the local Received: line, because
3164 it has not yet been created. The same applies to a copy of the message
3165 that is returned to a non-SMTP sender when a message is rejected.
3166
3167 (b) When a filter file is tested using -bf, no additional Received: header
3168 is added to the test message. After some thought, I decided that this
3169 is a bug fix.
3170
3171 This change does not affect the value of $received_for. It is still set
3172 after address rewriting, but before local_scan() is called.
3173
317467. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3175
317668. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3177 gave an unhelpful panic error message, and a defer error. I have managed to
3178 change this behaviour so that it now rejects any supplied certificate,
3179 which seems right, as the list of acceptable certificates is empty.
3180
318169. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3182 gave an unhelpful defer error. I have not managed to make this reject any
3183 supplied certificates, but the error message it gives is "no certificate
3184 supplied", which is not helpful.
3185
318670. exigrep's output now also includes lines that are not associated with any
3187 message, but which match the given pattern. Implemented by a patch from
3188 Martin Sluka, which also tidied up the Perl a bit.
3189
319071. Recipient callout verification, like sender verification, was using <> in
3191 the MAIL FROM command. This isn't really the right thing, since the actual
3192 sender may affect whether the remote host accepts the recipient or not. I
3193 have changed it to use the actual sender in the callout; this means that
3194 the cache record is now keyed on a recipient/sender pair, not just the
3195 recipient address. There doesn't seem to be a real danger of callout loops,
3196 since a callout by the remote host to check the sender would use <>.
3197 [SEE ABOVE: changed after hitting problems.]
3198
319972. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3200 temporary errors. However, in the case of such a code being given after
3201 the end of a data transmission (i.e. after ".") Exim was failing to write
3202 a retry record for the message. (Yes, there was some broken host that was
3203 actually sending 8xx at this point.)
3204
320573. An unknown lookup type in a host list could cause Exim to panic-die when
3206 the list was checked. (An example that provoked this was putting <; in the
3207 middle of a list instead of at the start.) If this happened during a DATA
3208 ACL check, a -D file could be left lying around. This kind of configuration
3209 error no longer causes Exim to die; instead it causes a defer errror. The
3210 incident is still logged to the main and panic logs.
3211
321274. Buglet left over from Exim 3 conversion. The message "too many messages
3213 in one connection" was written to the rejectlog but not the mainlog, except
3214 when address rewriting (yes!) was being logged.
3215
321675. Added write_rejectlog option.
3217
321876. When a system filter was run not as root (that is, when system_filter_user
3219 was set), the values of the $n variables were not being returned to the
3220 main process; thus, they were not subsequently available in the $sn
3221 variables.
3222
322377. Added +return_path_on_delivery log selector.
3224
322578. A connection timeout was being treated differently from recipients deferred
3226 when testing hosts_max_try with a message that was older than the host's
3227 retry timeout. (The host should not be counted, thus allowing all hosts to
3228 be tried at least once before bouncing.) This may have been the cause of an
3229 occasionally reported bug whereby a message would remain on the queue
3230 longer than the retry timeout, but would be bounced if a delivery was
3231 forced. I say "may" because I never totally pinned down the problem;
3232 setting up timeout/retry tests is difficult. See also the next item.
3233
323479. The ultimate address timeout was not being applied to errors that involved
3235 a combination of host plus message (for example, a timeout on a MAIL
3236 command). When an address resolved to a number of possible hosts, and they
3237 were not all tried for each delivery (e.g. because of hosts_max_try), a
3238 message could remain on the queue longer than the retry timeout.
3239
324080. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3241 Haardt.
3242
324381. Fixed an obscure SMTP outgoing bug which required at least the following
3244 conditions: (a) there was another message waiting for the same server;
3245 (b) the server returned 5xx to all RCPT commands in the first message so
3246 that the message was not completed; (c) the server dropped the connection
3247 or gave a negative response to the RSET that Exim sends to abort the
3248 transaction. The observed case was a dropped connection after DATA that had
3249 been sent in pipelining mode. That is, the server had advertised PIPELINING
3250 but was not implementing it correctly. The effect of the bug was incorrect
3251 behaviour, such as trying another host, and this could lead to a crash.
3252
3253
3254Exim version 4.30
3255-----------------
3256
3257 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3258 and daemon.c were passed as pointers to ints; they should have been
3259 pointers to socklen_t variables (which are typically unsigned ints).
3260
3261 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3262 fixed.
3263
3264 3. Fixed a really odd bug that affected only the testing scheme; patching a
3265 certain fixed string in the binary changed the value of another string that
3266 happened to be identical to the end of the original first string.
3267
3268 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3269 name", it returns that address as the IP address. On some operating
3270 systems (e.g. Solaris), it also passes back the IP address string as the
3271 "host name". However, on others (e.g. Linux), it passes back an empty
3272 string. Exim wasn't checking for this, and was changing the host name to an
3273 empty string, assuming it had been canonicized.
3274
3275 5. Although rare, it is permitted to have more than one PTR record for a given
3276 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3277 all the names associated with an address, because they do in Solaris.
3278 However, it seems that they do not in Linux for data that comes from the
3279 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3280 I found this out when I moved to a new Linux workstation and tried to run
3281 the Exim test suite.
3282
3283 To get round this problem I have changed the code so that it now does its
3284 own call to the DNS to look up PTR records when searching for a host name.
3285 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3286 addresses that are only in /etc/hosts are still found.
3287
3288 This behaviour is, however, controlled by an option called host_lookup_
3289 order, which defaults to "bydns:byaddr". If people want to use the other
3290 order, or indeed, just use one or the other means of lookup, they can
3291 specify it in this variable.
3292
3293 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3294 some operating systems, this comes back from gethostbyaddr() as an empty
3295 string, and this is what Exim used to test for. However, it seems that in
3296 other systems, "." is yielded. Exim now tests for this case too.
3297
3298 7. The values of check_spool_space and check_log_space are now held internally
3299 as a number of kilobytes instead of an absolute number of bytes. If a
3300 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3301 kilobyte. This means that much larger values can be stored.
3302
3303 8. Exim monitor: an attempt to get the action menu when not actually pointing
3304 at a message produces an empty menu entitled "No message selected". This
3305 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3306 no entries in it ("Shell widget menu has zero width and/or height"). So I
3307 have added a single, blank menu entry in this case.
3308
3309 9. Added ${quote_local_part.
3310
331110. MIME decoding is now applied to the contents of Subject: header lines when
3312 they are logged.
3313
331411. Now that a reference to $sender_host_address automatically causes a reverse
3315 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3316 host lookup before query-style lookups in lists that might use this
3317 variable. This has therefore been abolished, and the "net-" prefix is no
3318 longer necessary for query-style lookups.
3319
332012. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3321 have been a typo for LFLAGS, so it has been changed.
3322
332313. The install script calls Exim with "-C /dev/null" in order to find the
3324 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3325 to be output. Howeve, since Exim outputs its version number before the
3326 error, it didn't break the script. It just looked ugly. I fixed this by
3327 always allowing "-C /dev/null" if the caller is root.
3328
332914. Ignore overlarge ACL variable number when reading spool file - insurance
3330 against a later release with more variables having written the file.
3331
333215. The standard form for an IPv6 address literal was being rejected by EHLO.
3333 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3334 this, as well as the form without the "IPv6" on the front.
3335
333616. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3337 OS/Makefile-Darwin file.
3338
333917. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3340 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3341
334218. After change 4.21/52, "%ld" was used to format the contents of the $inode
3343 variable. However, some OS use ints for inodes. I've added cast to long int
3344 to get rid of the compiler warning.
3345
334619. I had forgotten to lock out "/../" in configuration file names when
3347 ALT_CONFIG_PREFIX was set.
3348
334920. Routers used for verification do not need to specify transports. However,
3350 if such a router generated a host list, and callout was configured, Exim
3351 crashed, because it could not find a port number from the (non-existent)
3352 transport. It now assumes port 25 in this circumstance.
3353
335421. Added the -t option to exigrep.
3355
335622. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3357 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3358 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3359 them is set, LOOKUP_LSEARCH is forced.
3360
336123. "exim -bV" now outputs a list of lookups that are included in the binary.
3362
336324. Added sender and host information to the "rejected by local_scan()" log
3364 line; previously there was no indication of these.
3365
336625. Added .include_if_exists.
3367
336826. Change 3.952/11 added an explicit directory sync on top of a file sync for
3369 Linux. It turns out that not all file systems support this. Apparently some
3370 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3371 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3372 not supported on the file descriptor, is now ignored when Exim is trying to
3373 sync a directory. This applies only to Linux.
3374
337527. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3376
337728. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3378 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3379 this.
3380
338129. Added support for maildirsize files from supplied patch (modified a bit).
3382
338330. The use of :fail: followed by an empty string could lead Exim to respond to
3384 sender verification failures with (e.g.):
3385
3386 550 Verification failed for <xxx>
3387 550 Sender verify failed
3388
3389 where the first response line was missing the '-' that indicates it is not
3390 the final line of the response.
3391
339231. The loop for finding the name of the user that called Exim had a hardwired
3393 limit of 10; it now uses the value of finduser_retries, which is used for
3394 all other user lookups.
3395
339632. Added $received_count variable, available in data and not_smtp ACLs, and at
3397 delivery time.
3398
339933. Exim was neglecting to zero errno before one call of strtol() when
3400 expanding a string and expecting an integer value. On some systems this
3401 resulted in spurious "integer overflow" errors. Also, it was casting the
3402 result into an int without checking.
3403
340434. Testing for a connection timeout using "timeout_connect" in the retry rules
3405 did not work. The code looks as if it has *never* worked, though it appears
3406 to have been documented since at least releast 1.62. I have made it work.
3407
340835. The "timeout_DNS" error in retry rules, also documented since at least
3409 1.62, also never worked. As it isn't clear exactly what this means, and
3410 clearly it isn't a major issue, I have abolished the feature by treating it
3411 as "timeout", and writing a warning to the main and panic logs.
3412
341336. The display of retry rules for -brt wasn't always showing the error code
3414 correctly.
3415
341637. Added new error conditions to retry rules: timeout_A, timeout_MX,
3417 timeout_connect_A, timeout_connect_MX.
3418
341938. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3420 to the empty sender.
3421
342239. The daemon was not analysing the content of -oX till after it had closed
3423 stderr and disconnected from the controlling terminal. This meant that any
3424 syntax errors were only noted on the panic log, and the return code from
3425 the command was 0. By re-arranging the code a little, I've made the
3426 decoding happen first, so such errors now appear on stderr, and the return
3427 code is 1. However, the actual setting up of the sockets still happens in
3428 the disconnected process, so errors there are still only recorded on the
3429 panic log.
3430
343140. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3432 connections (as happens on some IP stacks) was logged at start up time as
3433 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3434 it from "IPv6 and IPv4", which means that two separate sockets are being
3435 used.
3436
343741. The debug output for gethostbyname2() or getipnodebyname() failures now
3438 says whether AF_INET or AF_INET6 was passed as an argument.
3439
344042. Exiwhat output was messed up when time zones were included in log
3441 timestamps.
3442
344343. Exiwhat now gives more information about the daemon's listening ports,
3444 and whether -tls-on-connect was used.
3445
344644. The "port" option of the smtp transport is now expanded.
3447
344845. A "message" modifier in a "warn" statement in a non-message ACL was being
3449 silently ignored. Now an error message is written to the main and panic
3450 logs.
3451
345246. There's a new ACL modifier called "logwrite" which writes to a log file
3453 as soon as it is encountered.
3454
345547. Added $local_user_uid and $local_user_gid at routing time.
3456
345748. Exim crashed when trying to verify a sender address that was being
3458 rewritten to "<>".
3459
346049. Exim was recognizing only a space character after ".include". It now also
3461 recognizes a tab character.
3462
346350. Fixed several bugs in the Perl script that creates the exim.8 man page by
3464 extracting the relevant information from the specification. The man page no
3465 longer contains scrambled data for the -d option, and I've added a section
3466 at the front about calling Exim under different names.
3467
346851. Added "extra_headers" argument to the "mail" command in filter files.
3469
347052. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3471 crash.
3472
347353. Installed eximstats 1.29.
3474
347554. Added transport_filter_timeout as a generic transport option.
3476
347755. Exim no longer adds an empty Bcc: header to messages that have no To: or
3478 Cc: header lines. This was required by RFC 822, but it not required by RFC
3479 2822.
3480
348156. Exim used to add From:, Date:, and Message-Id: header lines to any
3482 incoming messages that did not have them. Now it does so only if the
3483 message originates locally, that is, if there is no associated remote host
3484 address. When Resent- header lines are present, this applies to the Resent-
3485 lines rather than the non-Resent- lines.
3486
348757. Drop incoming SMTP connection after too many syntax or protocol errors. The
3488 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3489
349058. Messages for configuration errors now include the name of the main
3491 configuration file - useful now that there may be more than one file in a
3492 list (.included file names were always shown).
3493
349459. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3495 for those rare installations that do not start the daemon as root or run it
3496 setuid root. I've cut out the call to initgroups() if the daemon is not
3497 root at that time.
3498
349960. The Exim user and group can now be bound into the binary as text strings
3500 that are looked up at the start of Exim's processing.
3501
350261. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3503
350462. Added $mailstore_basename variable.
3505
350663. Installed patch to sieve.c from Michael Haardt.
3507
350864. When Exim failed to open the panic log after failing to open the main log,
3509 the original message it was trying to log was written to stderr and debug
3510 output, but if they were not available (the usual case in production), it
3511 was lost. Now it is written to syslog before the two lines that record the
3512 failures to open the logs.
3513
351465. Users' Exim filters run in subprocesses under the user's uid. It is
3515 possible for a "deliver" command or an alias in a "personal" command to
3516 provoke an address rewrite. If logging of address rewriting is configured,
3517 this fails because the process is not running as root or exim. There may be
3518 a better way of dealing with this, but for the moment (because 4.30 needs
3519 to be released), I have disabled address rewrite logging when running a
3520 filter in a non-root, non-exim process.
3521
3522
3523Exim version 4.24
3524-----------------
3525
3526 1. The buildconfig auxiliary program wasn't quoting the value set for
3527 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3528 not defined. This bug was masked in 4.22 by the effect that was fixed in
3529 change 4.23/1.
3530
3531 2. Some messages that were rejected after a message id was allocated were
3532 shown as "incomplete" by exigrep. It no longer does this for messages that
3533 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3534
3535 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3536 have allow_domain_literals set, the ID did not get logged in the <= line.
3537 Domain literals are now always recognized in Message-ID: header lines.
3538
3539 4. The first argument for a ${extract expansion item is the key name or field
3540 number. Leading and trailing spaces in this item were not being ignored,
3541 causing some misleading effects.
3542
3543 5. When deliver_drop_privilege was set, single queue runner processes started
3544 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3545 same command in the process it spins off) were not dropping privilege.
3546
3547 6. When the daemon running as "exim" started a queue runner, it always
3548 re-executed Exim in the spun-off process. This is a waste of effort when
3549 deliver_drop_privilege is set. The new process now just calls the
3550 queue-runner function directly.
3551
3552
3553Exim version 4.23
3554-----------------
3555
3556 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3557 HEADERS_CHARSET.
3558
3559 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3560 ignored. Though the use of -oP was forcing the writing of a pid file, it
3561 was always written to the default place.
3562
3563 3. If the message "no IP address found for host xxxx" is generated during
3564 incoming verification, it is now followed by identification of the incoming
3565 connection (so you can more easily find what provoked it).
3566
3567 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3568
3569 5. Added some features to "harden" Exim a bit more against certain attacks:
3570
3571 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3572 be put in Local/Makefile. This is like the never_users runtime option,
3573 but it cannot be overridden. The default setting is "root".
3574
3575 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3576 prefix string with which any file named in a -C command line option
3577 must start.
3578
3579 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3580 is retained for -C and -D only if the caller of Exim is root. Without
3581 it, the exim user may also use -C and -D and retain privilege.
3582
3583 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3584 command line option is disabled.
3585
3586 6. Macro names set by the -D option must start with an upper case letter, just
3587 like macro names defined in the configuration file.
3588
3589 7. Added "dereference=" facility to LDAP.
3590
3591 8. Two instances of the typo "uknown" in the source files are fixed.
3592
3593 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3594 the Configure-Makefile script screwed up while processing it.
3595
359610. Incorporated PCRE 4.4.
3597
359811. The SMTP synchronization check was not operating right at the start of an
3599 SMTP session. For example, it could not catch a HELO sent before the client
3600 waited for the greeting. There is now a check for outstanding input at the
3601 point when the greeting is written. Because of the duplex, asynchronous
3602 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3603 way, but not yet received, when the check is performed.
3604
360512. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3606 on TCP/IP sockets, because this apparently causes some broken clients to
3607 timeout.
3608
360913. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3610 unchanged) from the Cygwin maintainer.
3611
361214. The code for -bV that shows what is in the binary showed "mbx" when maildir
3613 was supported instead of testing for mbx. Effectively a typo.
3614
361515. The spa authenticator server code was not checking that the input it
3616 received was valid base64.
3617
361816. The debug output line for the "set" modifier in ACLs was not showing the
3619 name of the variable that was being set.
3620
362117. Code tidy: the variable type "vtype_string" was never used. Removed it.
3622
362318. Previously, a reference to $sender_host_name did not cause a DNS reverse
3624 lookup on its own. Something else was needed to trigger the lookup. For
3625 example, a match in host_lookup or the need for a host name in a host list.
3626 Now, if $sender_host_name is referenced and the host name has not yet been
3627 looked up, a lookup is performed. If the lookup fails, the variable remains
3628 empty, and $host_lookup_failed is set to "1".
3629