No paniclog for ECONNRESET when getsockname() fails.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
520de300 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.424 2006/11/06 11:27:54 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
TF
6Exim version 4.64
7-----------------
21d74bd9
TK
8TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
9 leftover -K file (the existence of which was triggered by #402).
10 While we were at it, introduced process PID as part of the -K
11 filename. This should rule out race conditions when creating
12 these files.
13
14TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
15 processing considerably. Previous code took too long for large mails,
16 triggering a timeout which in turn triggers #401.
17
18TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
19 in the DK code in transports.c. sendfile() is not really portable,
20 hence the _LINUX specificness.
944e9e9c
TF
21
22TF/01 In the add_headers option to the mail command in an Exim filter,
23 there was a bug that Exim would claim a syntax error in any
24 header after the first one which had an odd number of characters
25 in the field name.
26
2b1c6e3a
PH
27PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
28 callout verification, Exim cached a "reject" for the entire domain. This
29 is correct for most verifications, but it is not correct for a recipient
30 verification with use_sender or use_postmaster set, because in that case
31 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
32 case of MAIL FROM:<> rejection from other early rejections (e.g.
33 rejection of HELO). When verifying a recipient using a non-null MAIL
34 address, the cache is ignored if it shows MAIL FROM:<> rejection.
35 Whatever the result of the callout, the value of the domain cache is
36 left unchanged (for any other kind of callout, getting as far as trying
37 RCPT means that the domain itself is ok).
38
1f872c80
PH
39PH/02 Tidied a number of unused variable and signed/unsigned warnings that
40 gcc 4.1.1 threw up.
41
42PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
43 manifest itself as EPIPE rather than ECONNECT. When tidying away a
44 session, the daemon ignores ECONNECT errors and logs others; it now
45 ignores EPIPE as well.
46
d203e649
PH
47PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
48 (quoted-printable decoding).
49
cc2ed8f7 50PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 51 later the small subsequent patch to fix an introduced bug.
f951fd57 52
ddfcd446
PH
53PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
54
d45b1de8
PH
55PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
56
57PH/08 An error is now given if message_size_limit is specified negative.
58
38a0a95f 59PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 60 to be given (somewhat) arbitrary names.
38a0a95f 61
a2405d83
JJ
62JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
63 in 4.64-PH/09.
64
65JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
66 miscellaneous code fixes
67
6ea85e9a
PH
68PH/10 Added the log_reject_target ACL modifier to specify where to log
69 rejections.
70
26da7e20
PH
71PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
72 hostname. This is wrong, because it relates to the incoming message (and
73 probably the interface on which it is arriving) and not to the outgoing
74 callout (which could be using a different interface). This has been
75 changed to use the value of the helo_data option from the smtp transport
76 instead - this is what is used when a message is actually being sent. If
77 there is no remote transport (possible with a router that sets up host
78 addresses), $smtp_active_hostname is used.
6ea85e9a 79
14aa5a05 80PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 81 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
82 (a) The code assumed that strncpy() returns a negative number on buffer
83 overflow, which isn't the case. Replaced with Exim's string_format()
84 function.
85 (b) There were several signed/unsigned issues. I just did the minimum
86 hacking in of casts. There is scope for a larger refactoring.
87 (c) The code used strcasecmp() which is not a standard C function.
88 Replaced with Exim's strcmpic() function.
89 (d) The code set only $1; it now sets $auth1 as well.
90 (e) A simple test gave the error "authentication client didn't specify
91 service in request". It would seem that Dovecot has changed its
92 interface. Fortunately there's a specification; I followed it and
93 changed what the client sends and it appears to be working now.
94
ff75a1f7
PH
95PH/13 Added $message_headers_raw to provide the headers without RFC 2047
96 decoding.
97
e6f6568e
PH
98PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
99 address A is aliased to B and C, where B exists and C does not. Without
100 -v the output is "A verified" because verification stops after a
101 successful redirection if more than one address is generated. However,
102 with -v the child addresses are also verified. Exim was outputting "A
103 failed to verify" and then showing the successful verification for C,
104 with its parentage. It now outputs "B failed to verify", showing B's
105 parentage before showing the successful verification of C.
106
d6f6e0dc
PH
107PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
108 look up a TXT record in a specific list after matching in a combined
109 list.
110
322050c2
PH
111PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
112 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
113 they consult the DNS. I had assumed they would set it the way they
114 wanted; and indeed my experiments on Linux seem to show that in some
115 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
116 To be on the safe side, however, I have now made the interface to
117 host_find_byname() similar to host_find_bydns(), with an argument
118 containing the DNS resolver options. The host_find_byname() function now
119 sets these options at its start, just as host_find_bydns() does. The smtp
120 transport options dns_qualify_single and dns_search_parents are passed to
121 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
122 of host_find_byname() use the default settings of RES_DEFNAMES
123 (qualify_single) but not RES_DNSRCH (search_parents).
124
08955dd3
PH
125PH/17 Applied (a modified version of) Nico Erfurth's patch to make
126 spool_read_header() do less string testing, by means of a preliminary
127 switch on the second character of optional "-foo" lines. (This is
128 overdue, caused by the large number of possibilities that now exist.
129 Originally there were few.) While I was there, I also converted the
130 str(n)cmp tests so they don't re-test the leading "-" and the first
131 character, in the hope this might squeeze out yet more improvement.
132
1eccaa59
PH
133PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
134 flag allowing group syntax was set by the header_syntax check but not
135 turned off, possible causing trouble later; (2) The flag was not being
136 set at all for the header_verify test, causing "group"-style headers to
137 be rejected. I have now set it in this case, and also caused header_
138 verify to ignore an empty address taken from a group. While doing this, I
139 came across some other cases where the code for allowing group syntax
140 while scanning a header line wasn't quite right (mostly, not resetting
141 the flag correctly in the right place). These bugs could have caused
142 trouble for malformed header lines. I hope it is now all correct.
143
602e59e5
PH
144PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
145 with the "reply" argument non-NULL. The code, however (which originally
146 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
147 but it didn't always do it. This confused somebody who was copying the
148 code for some other use. I have removed all the tests.
149
411ef850
PH
150PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
151 feature that was used to support insecure browsers during the U.S. crypto
152 embargo. It requires special client support, and Exim is probably the
153 only MTA that supported it -- and would never use it because real RSA is
154 always available. This code has been removed, because it had the bad
155 effect of slowing Exim down by computing (never used) parameters for the
156 RSA_EXPORT functionality.
157
7befa435
PH
158PH/21 On the advice of Timo Sirainen, added a check to the dovecot
159 authenticator to fail if there's a tab character in the incoming data
160 (there should never be unless someone is messing about, as it's supposed
161 to be base64-encoded). Also added, on Timo's advice, the "secured" option
162 if the connection is using TLS or if the remote IP is the same as the
163 local IP, and the "valid-client-cert option" if a client certificate has
164 been verified.
165
48da4259 166PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
167 authenticators. This can be used for authorization after authentication
168 succeeds. (In the case of plaintext, it servers for both authentication
169 and authorization.)
170
48da4259
PH
171PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
172 if any retry times were supplied.
173
d1d5595c
PH
174PH/24 Exim crashed if verify=helo was activated during an incoming -bs
175 connection, where there is no client IP address to check. In this
176 situation, the verify now always succeeds.
177
0ef732d9
PH
178PH/25 Applied John Jetmore's -Mset patch.
179
328895cc
PH
180PH/26 Added -bem to be like -Mset, but loading a message from a file.
181
fd700877
PH
182PH/27 In a string expansion for a processed (not raw) header when multiple
183 headers of the same name were present, leading whitespace was being
184 removed from all of them, but trailing whitespace was being removed only
185 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
186 before concatenation. Completely empty headers in a concatenation (as
187 before) are ignored.
fd700877 188
8dce1a6f
PH
189PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
190 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
191
17af4a17
PH
192PH/29 [Removed. This was a change that I later backed out, and forgot to
193 correct the ChangeLog entry (that I had efficiently created) before
194 committing the later change.]
f6c332bd
PH
195
196PH/30 Exim was sometimes attempting to deliver messages that had suffered
197 address errors (4xx response to RCPT) over the same connection as other
198 messages routed to the same hosts. Such deliveries are always "forced",
199 so retry times are not inspected. This resulted in far too many retries
200 for the affected addresses. The effect occurred only when there were more
201 hosts than the hosts_max_try setting in the smtp transport when it had
202 the 4xx errors. Those hosts that it had tried were not added to the list
203 of hosts for which the message was waiting, so if all were tried, there
204 was no problem. Two fixes have been applied:
205
206 (i) If there are any address or message errors in an SMTP delivery, none
207 of the hosts (tried or untried) are now added to the list of hosts
208 for which the message is waiting, so the message should not be a
209 candidate for sending over the same connection that was used for a
210 successful delivery of some other message. This seems entirely
211 reasonable: after all the message is NOT "waiting for some host".
212 This is so "obvious" that I'm not sure why it wasn't done
213 previously. Hope I haven't missed anything, but it can't do any
214 harm, as the worst effect is to miss an optimization.
215
216 (ii) If, despite (i), such a delivery is accidentally attempted, the
217 routing retry time is respected, so at least it doesn't keep
218 hammering the server.
219
c1114884
PH
220PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
221 in ${readsocket because some servers need this prod.
222
7a0743eb
PH
223PH/32 Added some extra debug output when updating a wait-xxx database.
224
0d85fa3f
PH
225PH/33 The hint "could be header name not terminated by colon", which has been
226 given for certain expansion errors for a long time, was not being given
227 for the ${if def:h_colon_omitted{... case.
228
1bf43b78
PH
229PH/34 The spec says: "With one important exception, whenever a domain list is
230 being scanned, $domain contains the subject domain." There was at least
231 one case where this was not true.
232
520de300
PH
233PH/35 The error "getsockname() failed: connection reset by peer" was being
234 written to the panic log as well as the main log, but it isn't really
235 panic-worthy as it just means the connection died rather early on. I have
236 removed the panic log writing for the ECONNRESET error when getsockname()
237 fails.
238
944e9e9c 239
478be7b0
SC
240Exim version 4.63
241-----------------
242
243SC/01 Use a glob alias rather than an array ref in eximstats generated
244 parser. This improves both readability and performance.
245
246SC/02 Collect SpamAssassin and rejection statistics in eximstats.
247 Don't display local sender or destination tables in eximstats unless
248 there is data to show.
249 Added average volumes into the eximstats top table text output.
250
251SC/03 Collect data on the number of addresses (recipients) as well
252 as the number of messages in eximstats.
253
2b965a65
TF
254TF/01 Correct an error in the documentation for the redirect router. Exim
255 does (usually) call initgroups() when daemonizing.
478be7b0 256
45b91596
PH
257TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
258 with consistent privilege compared to when running as a daemon.
478be7b0 259
c59f5781
TF
260TF/03 Note in the spec that $authenticated_id is not set for local
261 submissions from trusted users.
262
90fc3069
TF
263TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
264 Thanks to Dean Brooks <dean@iglou.com> for the patch.
265
6083aca0
TF
266TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
267 by adding some example configuration directives to the default
268 configuration file. A little bit of work is required to uncomment the
269 directives and define how usernames and passwords are checked, but
270 there is now a framework to start from.
271
765b530f
PH
272PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
273 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
274 without this. I don't know how relevant this is to other LDAP libraries.
275
4e167a8c
PH
276PH/02 Add the verb name to the "unknown ACL verb" error.
277
4608d683
PH
278PH/03 Magnus Holmgren's patch for filter_prepend_home.
279
b8dc3e4a
PH
280PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
281
5418e93b
PH
282PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
283 directory not expanded when it should be if an expanded home directory
284 was set for the address (which is overridden by the transport).
285
b4a9bda2
PH
286PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
287 libradius.
288
45b91596
PH
289PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
290 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
291 because it is too late at that time, and has no effect.
292
5547e2c5
PH
293PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
294 security issue with \' (bugzilla #107). I could not use the
295 PQescapeStringConn() function, because it needs a PGconn value as one of
296 its arguments.
297
dbcef0ea
PH
298PH/08 When testing addresses using -bt, indicate those final addresses that
299 are duplicates that would not cause an additional delivery. At least one
300 person was confused, thinking that -bt output corresponded to deliveries.
301 (Suppressing duplicates isn't a good idea as you lose the information
302 about possibly different redirections that led to the duplicates.)
303
25257489
PH
304PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
305 systems where poll() doesn't work, in particular OS X.
306
c816d124
PH
307PH/10 Added more information to debugging output for retry time not reached.
308
a9ccd69a
PH
309PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
310 operations in malware.c.
311
75fa1910
PH
312PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
313 signatures.
314
a7d7aa58
PH
315PH/13 If write_rejectlog was set false when logging was sent to syslog with
316 syslog_duplication set false, log lines that would normally be written
317 both the the main log and to the reject log were not written to syslog at
318 all.
319
42119b09
PH
320PH/14 In the default configuration, change the use of "message" in ACL warn
321 statements to "add_header".
322
41609df5
PH
323PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
324 not followed by a command (e.g. "seen endif").
325
a5bd321b
PH
326PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
327 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
328 latter.
329
e85a7ad5 330PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
331 so that it is now:
332
e85a7ad5
PH
333 ${if or { \
334 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
335 { match{$h_precedence:}{(?i)bulk|list|junk} } \
336 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
337 }{no}{yes}}
338
e85a7ad5
PH
339 The Auto-Submitted: and various List- headers are standardised, whereas I
340 don't think Precedence: ever was.
5dff5817 341
d8fe1c03
PH
342PH/18 Refactored debugging code in route_finduser() to show more information,
343 in particular, the error code if getpwnam() issues one.
344
16282d2b
PH
345PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
346 This is apparently needed in addition to the PH/07 change above to avoid
347 any possible encoding problems.
348
35d40a98
PH
349PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
350 but not after initializing Perl.
351
034d99ab
PH
352PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
353 output them only if debugging. By default they are written stderr,
354 apparently, which is not desirable.
355
6ec97b1b
PH
356PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
357 queries.
358
e22ca4ac
JJ
359JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
360 --not options
361
362JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
363
33d73e3b
PH
364PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
365 authenticated or an ident call has been made. Suppress the default
366 values for $authenticated_id and $authenticated_sender (but permit -oMai
367 and -oMas) when testing with -bh.
368
9ecb03f3
PH
369PH/24 Re-jigged the order of the tests in the default configuration so that the
370 tests for valid domains and recipients precede the DNS black list and CSA
371 tests, on the grounds that those ones are more expensive.
372
084efe8d
PH
373PH/25 Exim was not testing for a space following SMTP commands such as EHLO
374 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
375 This bug exists in every version of Exim that I still have, right back to
376 0.12.
377
366fc9f0
PH
378PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
379 However, an attempt to turn on case-sensitivity in a regex key by
380 including (?-i) didn't work because the subject string was already
381 lowercased, and the effects were non-intuitive. It turns out that a
382 one-line patch can be used to allow (?-i) to work as expected.
383
c59f5781 384
c887c79e
TF
385Exim version 4.62
386-----------------
387
388TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
389 other effects) broke the use of negated acl sub-conditions.
390
1cce3af8
PH
391PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
392 patch).
393
afb3eaaf
PH
394PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
395 "Deny" causes Exim to reject the incoming connection with a 554 error.
396 Unfortunately, if there is a major crisis, such as a disk failure,
397 tcp-wrappers gives "deny", whereas what one would like would be some
398 kind of temporary error. A kludge has been added to help with this.
399 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
400 554 error is used if errno is still zero or contains ENOENT (which occurs
401 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
402 451 error is used.
403
e173618b
PH
404PH/03 Add -lutil to the default FreeBSD LIBS setting.
405
dd16e114
PH
406PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
407 errors. Otherwise a message that provokes a temporary error (when other
408 messages do not) can cause a whole host to time out.
409
f7fd3850
PH
410PH/05 Batch deliveries by appendfile and pipe transports did not work when the
411 addresses were routed directly to files or pipes from a redirect router.
412 File deliveries just didn't batch; pipe deliveries might have suffered
413 odd errors.
414
d87df92c
PH
415PH/06 A failure to get a lock for a hints database would erroneously always say
416 "Failed to get write lock", even when it was really a read lock.
417
7e9f683d
PH
418PH/07 The appendfile transport was creating MBX lock files with a fixed mode
419 of 0600. This has been changed to use the value of the lockfile_mode
420 option (which defaults to 0600).
421
bfad5236
PH
422PH/08 Applied small patch from the Sieve maintainer.
423
01c490df
PH
424PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
425 folder from quota calculations, a direct delivery into this folder messed
426 up the contents of the maildirsize file. This was because the regex was
427 used only to exclude .Trash (or whatever) when the size of the mailbox
428 was calculated. There was no check that a delivery was happening into an
429 excluded directory. This bug has been fixed by ignoring all quota
430 processing for deliveries into excluded directories.
431
d6629cdc
PH
432PH/10 Added the maildirfolder_create_regex option to appendfile.
433
1cce3af8 434
214e2000
PH
435Exim version 4.61
436-----------------
437
438PH/01 The code for finding all the local interface addresses on a FreeBSD
439 system running IPv6 was broken. This may well have applied to all BSD
440 systems, as well as to others that have similar system calls. The broken
441 code found IPv4 interfaces correctly, but gave incorrect values for the
442 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
443 that it would not match correctly against @[] and not recognize the IPv6
444 addresses as local.
445
f9daeae0
PH
446PH/02 The ipliteral router was not recognizing addresses of the form user@
447 [ipv6:....] because it didn't know about the "ipv6:" prefix.
448
7e66e54d
PH
449PH/03 Added disable_ipv6.
450
c8ea1597
PH
451PH/04 Changed $reply_address to use the raw form of the headers instead of the
452 decoded form, because it is most often used to construct To: headers
453 lines in autoreplies, and the decoded form may well be syntactically
454 invalid. However, $reply_address has leading white space removed, and all
455 newlines turned into spaces so that the autoreply transport does not
456 grumble.
457
911f6fde
PH
458PH/05 If group was specified without a user on a router, and no group or user
459 was specified on a transport, the group from the router was ignored.
460
47ca6d6c
PH
461PH/06 Increased the number of ACL variables to 20 of each type, and arranged
462 for visible compile-time settings that can be used to change these
463 numbers, for those that want even more. Backwards compatibility with old
464 spool files has been maintained. However, going back to a previous Exim
465 release will lost any variables that are in spool files.
466
ed0e9820
PH
467PH/07 Two small changes when running in the test harness: increase delay when
468 passing a TCP/IP connection to a new process, in case the original
469 process has to generate a bounce, and remove special handling of
470 127.0.0.2 (sic), which is no longer necessary.
471
eff37e47
PH
472PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
473 be the same on different OS.
474
1921d2ea
PH
475PH/09 Moved a debug statement in filter processing to avoid a race problem when
476 testing.
477
b3f69ca8
JJ
478JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
479 whether --show-vars was specified or not
480
481JJ/02 exipick: Added support for new ACL variable spool format introduced
482 in 4.61-PH/06
483
424a1c63
PH
484PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
485 syntactically invalid From: or Reply-to: line, and a filter used this to
486 generate an autoreply, and therefore failed to obtain an address for the
487 autoreply, Exim could try to deliver to a non-existent relative file
488 name, causing unrelated and misleading errors. What now happens is that
489 it logs this as a hard delivery error, but does not attempt to create a
490 bounce message.
491
7a100415
PH
492PH/11 The exinext utility has a -C option for testing purposes, but although
493 the given file was scanned by exinext itself; it wasn't being passed on
494 when Exim was called.
495
19b9dc85
PH
496PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
497 an end-of-file indication when reading a command response.
498
309bd837
PH
499PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
500 compiled. In many other places in Exim, IPv6 addresses are always
501 recognized, so I have changed this. It also means that IPv4 domain
502 literals of the form [IPV4:n.n.n.n] are now always recognized.
503
59e82a2a
PH
504PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
505 used if the router is not running as root, for example, when verifying at
506 ACL time, or when using -bh. The debugging output from this situation was
507 non-existent - all you got was a failure to exec. I have made two
508 changes:
509
510 (a) Failures to set uid/gid, the current directory, or a process leader
511 in a subprocess such as that created by queryprogram now generate
512 suitable debugging ouput when -d is set.
513
514 (b) The queryprogram router detects when it is not running as root,
515 outputs suitable debugging information if -d is set, and then runs
516 the subprocess without attempting to change uid/gid.
517
9edc04ce
PH
518PH/15 Minor change to Makefile for building test_host (undocumented testing
519 feature).
520
1349e1e5
PH
521PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
522 additional section of a DNS packet that returns MX or SRV records.
523 Instead, it always explicitly searches for A/AAAA records. This avoids
524 major problems that occur when a DNS server includes only records of one
525 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
526 fixed another bug: if SRV records were looked up and the corresponding
527 address records were *not* found in the additional section, the port
528 values from the SRV records were lost.
529
ea49d0e1
PH
530PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
531 using the correct key (the original address) when searching the retry
532 rules in order to find which one to use for generating the retry hint.
533
064a94c9
PH
534PH/18 If quota_warn_message contains a From: header, Exim now refrains from
535 adding the default one. Similarly, if it contains a Reply-To: header, the
536 errors_reply_to option, if set, is not used.
537
727071f8
PH
538PH/19 When calculating a retry time, Exim used to measure the "time since
539 failure" by looking at the "first failed" field in the retry record. Now
540 it does not use this if it is later than than the arrival time of the
541 message. Instead it uses the arrival time. This makes for better
542 behaviour in cases where some deliveries succeed, thus re-setting the
543 "first failed" field. An example is a quota failure for a huge message
544 when small messages continue to be delivered. Without this change, the
545 "time since failure" will always be short, possible causing more frequent
546 delivery attempts for the huge message than are intended.
dd16e114 547 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 548
f78eb7c6
PH
549PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
550 $1, $2, $3) because the numerical variables can be reset during some
551 expansion items (e.g. "match"), thereby losing the authentication data.
552
21c28500
PH
553PH/21 Make -bV show the size of off_t variables so that the test suite can
554 decide whether to run tests for quotas > 2G.
555
556PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
557 mailbox_size, and mailbox_filecount in the appendfile transport. If a
558 filecount value is greater than 2G or if a quota value is greater than 2G
559 on a system where the size of off_t is not greater than 4, a panic error
560 is given.
561
1688f43b
PH
562PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
563 never match. The debug and -bh output now contains an explicit error
564 message indicating a malformed IPv4 address or mask.
565
566PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
567 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
568 PH/23 above applies.
569
9675b384
PH
570PH/25 Do not write to syslog when running in the test harness. The only
571 occasion when this arises is a failure to open the main or panic logs
572 (for which there is an explicit test).
573
6a3f1455
PH
574PH/26 Added the /no_tell option to "control=freeze".
575
dac79d3e
PH
576PH/27 If a host name lookup failed very early in a connection, for example, if
577 the IP address matched host_lookup and the reverse lookup yielded a name
578 that did not have a forward lookup, an error message of the form "no IP
579 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
580 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 581
5977a0b3
PH
582PH/28 An enabling patch from MH: add new function child_open_exim2() which
583 allows the sender and the authenticated sender to be set when
584 submitting a message from within Exim. Since child_open_exim() is
585 documented for local_scan(), the new function should be too.
586
c91535f3
PH
587PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
588 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
589 results in an empty string is now treated as unset.
590
0d46a8c8
PH
591PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
592
278c6e6c
PH
593PH/31 Added sender_verify_fail logging option.
594
2cbb4081
PH
595PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
596 needed by RFC 822 but not by RFC 2822 was commented out. I have now
597 tidied the source and removed it altogether.
598
3eef829e
PH
599PH/33 When a queue run was abandoned because the load average was too high, a
600 log line was always written; now it is written only if the queue_run log
601 selector is set. In addition, the log line for abandonment now contains
602 information about the queue run such as the pid. This is always present
603 in "start" and "stop" lines but was omitted from the "abandon" line.
604
1ab95fa6
PH
605PH/34 Omit spaces between a header name and the colon in the error message that
606 is given when verify = headers_syntax fails (if there are lots of them,
607 the message gets confusing).
608
230205fc
PH
609PH/35 Change the default for dns_check_names_pattern to allow slashes within
610 names, as there are now some PTR records that contain slashes. This check
611 is only to protect against broken name servers that fall over on strange
612 characters, so the fact that it applies to all lookups doesn't matter.
613
75e0e026
PH
614PH/36 Now that the new test suite is complete, we can remove some of the
615 special code in Exim that was needed for the old test suite. For example,
616 sorting DNS records because real resolvers return them in an arbitrary
617 order. The new test suite's fake resolver always returns records in the
618 same order.
619
620PH/37 When running in the test harness, use -odi for submitted messages (e.g.
621 bounces) except when queue_only is set, to avoid logging races between
622 the different processes.
623
145396a6
PH
624PH/38 Panic-die if .include specifies a non-absolute path.
625
3cd34f13
PH
626PH/39 A tweak to the "H" retry rule from its user.
627
11121d3d
JJ
628JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
629 a label. They prevented compilation on older perls.
630
631JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
632 a warning to be raised on newish perls.
633
634JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
635 on queue. Changes to match documented behaviour of showing count of
636 messages matching specified criteria.
637
8def5aaf
PH
638PH/40 Changed the default ident timeout from 30s to 5s.
639
929ba01c
PH
640PH/41 Added support for the use of login_cap features, on those BSD systems
641 that have them, for controlling the resources used by pipe deliveries.
642
2632889e
PH
643PH/42 The content-scanning code uses fopen() to create files in which to put
644 message data. Previously it was not paying any attention to the mode of
645 the files. Exim runs with umask(0) because the rest of the code creates
646 files with open(), and sets the required mode explicitly. Thus, these
647 files were ending up world-writeable. This was not a big issue, because,
648 being within the spool directory, they were not world-accessible. I have
649 created a function called modefopen, which takes an additional mode
650 argument. It sets umask(777), creates the file, chmods it to the required
651 mode, then resets the umask. All the relevant calls to fopen() in the
652 content scanning code have been changed to use this function.
653
944a9c55
PH
654PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
655 to 24 hours. This avoids potential overflow problems when processing G
656 and H retry rules. I suspect nobody ever tinkers with this value.
657
4a23603b
PH
658PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
659
4730f942
PH
660PH/45 When the plaintext authenticator is running as a client, the server's
661 challenges are checked to ensure they are valid base64 strings. By
662 default, the authentication attempt is cancelled if an invalid string is
663 received. Setting client_ignore_invalid_base64 true ignores these errors.
664 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
665 they are received. Thus, the responses can be made to depend on the
666 challenges. If an invalid string is ignored, an empty string is placed in
667 the variable.
668
30dba1e6
PH
669PH/46 Messages that are created by the autoreply transport now contains a
670 References: header, in accordance with RFCs 2822 and 3834.
671
382afc6b
PH
672PH/47 Added authenticated_sender_force to the smtp transport.
673
a86229cf
PH
674PH/48 The ${prvs expansion was broken on systems where time_t was long long.
675
50c99ba6
PH
676PH/49 Installed latest patch from the Sieve maintainer.
677
d35e429d
PH
678PH/50 When an Exim quota was set without a file count quota, and mailbox_size
679 was also set, the appendfile transport was unnecessarily scanning a
680 directory of message files (e.g. for maildir delivery) to find the count
681 of files (along with the size), even though it did not need this
682 information. It now does the scan only if it needs to find either the
683 size of the count of files.
684
f90d018c
PH
685PH/51 Added ${time_eval: to convert Exim time strings into seconds.
686
75def545
PH
687PH/52 Two bugs concerned with error handling when the smtp transport is
688 used in LMTP mode:
689
690 (i) Exim was not creating retry information for temporary errors given
691 for individual recipients after the DATA command when the smtp transport
692 was used in LMTP mode. This meant that they could be retried too
693 frequently, and not timed out correctly.
694
695 (ii) Exim was setting the flag that allows error details to be returned
696 for LMTP errors on RCPT commands, but not for LMTP errors for individual
697 recipients that were returned after the DATA command.
698
699PH/53 This is related to PH/52, but is more general: for any failing address,
700 when detailed error information was permitted to be returned to the
701 sender, but the error was temporary, then after the final timeout, only
702 "retry timeout exceeded" was returned. Now it returns the full error as
703 well as "retry timeout exceeded".
704
c46782ef
PH
705PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
706 do this, and (what is worse) MTAs that accept it.
707
71fafd95
PH
708PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
709 will now be deprecated.
710
2c5db4fd
PH
711PH/56 New os.c-cygwin from the Cygwin maintainer.
712
9cf6b11a
JJ
713JJ/06 exipick: added --unsorted option to allow unsorted output in all output
714 formats (previously only available in exim formats via -bpr, -bpru,
715 and -bpra. Now also available in native and exiqgrep formats)
716
717JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
718 with very large, slow to parse queues
719
720JJ/08 exipick: added ! as generic prefix to negate any criteria format
721
722JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
723
898d150f
PH
724PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
725 responses to authentication challenges, though it was showing the
726 challenges; (ii) I've removed the CR characters from the debug output for
727 SMTP output lines.
728
46218253
PH
729PH/58 Allow for the insertion of a newline as well as a space when a string
730 is turned into more than one encoded-word during RFC 2047 encoding. The
731 Sieve code now uses this.
732
e97957bc
PH
733PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
734 data_4xx, lost_connection, tls_required.
735
81e509d7
PH
736PH/60 When a VRFY deferred or FAILED, the log message rather than the user
737 message was being sent as an SMTP response.
738
3d240ff7
PH
739PH/61 Add -l and -k options to exicyclog.
740
b37c4101
PH
741PH/62 When verifying, if an address was redirected to one new address, so that
742 verification continued, and the new address failed or deferred after
743 having set something in $address_data, the value of $address_data was not
744 passed back to the ACL. This was different to the case when no
745 redirection occurred. The value is now passed back in both cases.
746
79378e0f
PH
747PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
748 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
749 use login_cap.h, so on its own it isn't the distinguishing feature. The
750 new name refers directly to the setclassresources() function.
751
e49c7bb4
PH
752PH/65 Added configuration files for NetBSD3.
753
d114ec46
PH
754PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
755
f3d7df6c
PH
756PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
757 is preferred over IPv4.
758
715ab376
PH
759PH/68 The bounce_return_message and bounce_return_body options were not being
760 honoured for bounces generated during the reception of non-SMTP messages.
761 In particular, this applied to messages rejected by the ACL. This bug has
762 been fixed. However, if bounce_return_message is true and bounce_return_
763 body is false, the headers that are returned for a non-SMTP message
764 include only those that have been read before the error was detected.
765 (In the case of an ACL rejection, they have all been read.)
766
6b31b150
PH
767PH/69 The HTML version of the specification is now built in a directory called
768 spec_html instead of spec.html, because the latter looks like a path with
769 a MIME-type, and this confuses some software.
770
771PH/70 Catch two compiler warnings in sieve.c.
772
d515a917
PH
773PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
774 function verify_get_ident() calls ip_connect() to connect a socket, but
775 if the "connect()" function timed out, ip_connect() used to close the
776 socket. However, verify_get_ident() also closes the socket later, and in
777 between Exim writes to the log, which may get opened at this point. When
778 the socket was closed in ip_connect(), the log could get the same file
779 descriptor number as the socket. This naturally causes chaos. The fix is
780 not to close the socket in ip_connect(); the socket should be closed by
781 the function that creates it. There was only one place in the code where
782 this was missing, in the iplookup router, which I don't think anybody now
783 uses, but I've fixed it anyway.
784
9b8fadde
PH
785PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
786 well as to direct DNS lookups. Otherwise the handling of names in host
787 lists is inconsistent and therefore confusing.
788
214e2000 789
5de37277
PH
790Exim version 4.60
791-----------------
792
cc38ddbf
PH
793PH/01 Two changes to the default runtime configuration:
794
795 (1) Move the checks for relay_from_hosts and authenticated clients from
796 after to before the (commented out) DNS black list checks.
797
798 (2) Add control=submission to the relay_from_hosts and authenticated
799 clients checks, on the grounds that messages accepted by these
800 statements are most likely to be submissions.
5de37277 801
72fdd6ae
PH
802PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
803
804 (1) Generate an error if the third argument for the ${prvs expansion is
805 not a single digit.
806
807 (2) Treat a missing third argument of ${prvscheck as if it were an empty
808 string.
809
810 (3) Reset the variables that are obtained from the first argument of
811 ${prvscheck and used in the second argument before leaving the code,
812 because their memory is reclaimed, so using them afterwards may do
813 silly things.
814
815 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
816 one (it's much easier than Tom thought :-).
817
818 (5) Because of (4), we can now allow for the use of $prvscheck_result
819 inside the third argument.
cb9328de 820
cb741023
PH
821PH/03 For some reason, the default setting of PATH when running a command from
822 a pipe transport was just "/usr/bin". I have changed it to
823 "/bin:/usr/bin".
824
f174f16e
PH
825PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
826 anything to be listed in the output from -bV.
b2f5a032 827
c25242d7
PH
828PH/05 When a filter generated an autoreply, the entire To: header line was
829 quoted in the delivery log line, like this:
830
831 => >A.N.Other <ano@some.domain> <original@ddress> ...
832
833 This has been changed so that it extracts the operative address. There
834 may be more than one such address. If so, they are comma-separated, like
835 this:
836
837 => >ano@some.domain,ona@other.domain <original@ddress> ...
838
82c19f95
PH
839PH/06 When a client host used a correct literal IP address in a HELO or EHLO
840 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
841 not being looked up in the rDNS to get a host name, Exim was showing the
842 IP address twice in Received: lines, even though the IP addresses were
843 identical. For example:
844
845 Received: from [1.2.3.4] (helo=[1.2.3.4])
846
847 However, if the real host name was known, it was omitting the HELO data
848 if it matched the actual IP address. This has been tidied up so that it
849 doesn't show the same IP address twice.
850
d7ffbc12
PH
851PH/07 When both +timestamp and +memory debugging was on, the value given by
852 $tod_xxx expansions could be wrong, because the tod_stamp() function was
853 called by the debug printing, thereby overwriting the timestamp buffer.
854 Debugging no longer uses the tod_stamp() function when +timestamp is set.
855
9f526266
PH
856PH/08 When the original message was included in an autoreply transport, it
857 always said "this is a copy of the message, including all the headers",
858 even if body_only or headers_only was set. It now gives an appropriate
859 message.
860
87fcc8b9
PH
861PH/09 Applied a patch from the Sieve maintainer which:
862
863 o fixes some comments
864 o adds the (disabled) notify extension core
865 o adds some debug output for the result of if/elsif tests
866 o points to the current vacation draft in the documentation
867 and documents the missing references header update
868
869 and most important:
870
871 o fixes a bug in processing the envelope test (when testing
872 multiple envelope elements, the last element determinted the
873 result)
874
456682f5
PH
875PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
876 Electronic Mail") by including:
877
878 Auto-submitted: auto-generated
879
880 in the messages that it generates (bounce messages and others, such as
881 warnings). In the case of bounce messages for non-SMTP mesages, there was
882 also a typo: it was using "Auto_submitted" (underscore instead of
883 hyphen). Since every message generated by Exim is necessarily in response
884 to another message, thes have all been changed to:
885
886 Auto-Submitted: auto-replied
887
888 in accordance with these statements in the RFC:
889
890 The auto-replied keyword:
891
892 - SHOULD be used on messages sent in direct response to another
893 message by an automatic process,
894
895 - MUST NOT be used on manually-generated messages,
896
897 - MAY be used on Delivery Status Notifications (DSNs) and Message
898 Disposition Notifications (MDNs),
899
900 - MUST NOT be used on messages generated by automatic or periodic
901 processes, except for messages which are automatic responses to
902 other messages.
903
3e46c1aa
PH
904PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
905 to the default Received: header definition.
456682f5 906
49826d12
PH
907PH/12 Added log selector acl_warn_skipped (default on).
908
eba0c039
PH
909PH/13 After a successful wildlsearch lookup, discard the values of numeric
910 variables because (a) they are in the wrong storage pool and (b) even if
911 they were copied, it wouldn't work properly because of the caching.
912
a0d6ba8a
PH
913PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
914 checking when decoding. Apparently there are clients that generate
915 overlong encoded strings. Why am I not surprised?
916
f0917727
PH
917PH/15 If the first argument of "${if match_address" was not empty, but did not
918 contain an "@" character, Exim crashed. Now it writes a panic log message
919 and treats the condition as false.
920
096fee00
PH
921PH/16 In autoreply, treat an empty string for "once" the same as unset.
922
024bd3c2
PH
923PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
924 extension "envelope-auth". The code is finished and in agreement with
925 other implementations, but there is no documentation so far and in fact,
926 nobody wrote the draft yet. This extension is currently #undef'ed, thus
927 not changing the active code.
928
929 Print executed "if" and "elsif" statements when debugging is used. This
930 helps a great deal to understand what a filter does.
931
932 Document more things not specified clearly in RFC3028. I had all this
933 sorted out, when out of a sudden new issues came to my mind. Oops."
934
df199fec
PH
935PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
936 (Bugzilla #53).
937
d27f1df3
PH
938PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
939 canonical form (as documented). However, after a host name lookup from
940 the IP address, check_host() was doing a simple string comparison with
941 addresses acquired from the DNS when checking that the found name did
942 have the original IP as one of its addresses. Since any found IPv6
943 addresses are likely to be in abbreviated form, the comparison could
944 fail. Luckily, there already exists a function for doing the comparison
945 by converting both addresses to binary, so now that is used instead of
946 the text comparison.
947
96776534
PH
948PH/20 There was another similar case to PH/19, when a complete host name was
949 given in a host list; looking up its IP address could give an abbreviated
950 form, whereas the current host's name might or might not be abbreviated.
951 The same fix has been applied.
952
5de37277 953
9a799bc0
PH
954Exim version 4.54
955-----------------
956
957PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
958 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
959 It now does.
960
99a4b039
PH
961PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
962 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
963
964PH/03 Typo: missing ".o" in src/pcre/Makefile.
965
4b233853
PH
966PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
967 header line, restrict the check to what is listed in RFCs 2369 and 2929.
968 Also, for "Auto-Submitted", treat anything other than "no" as
969 non-personal, in accordance with RFC 3834. (Previously it treated
970 anything starting "auto-" as non-personal.)
971
8857ccfd
PH
972TF/01 The control=submission/name=... option had a problem with syntax
973 errors if the name included a slash character. The /name= option
974 now slurps the rest of the string, so it can include any characters
975 but it must come last in the list of options (after /sender_retain
976 or /domain=).
977
433a2980
PH
978PH/05 Some modifications to the interface to the fake nameserver for the new
979 testing suite.
980
3e46c1aa 981
9a799bc0 982
e3a311ba
TK
983Exim version 4.53
984-----------------
985
986TK/01 Added the "success_on_redirect" address verification option. See
987 NewStuff for rationale and an example.
988
13b685f9
PH
989PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
990
395ff96d
PH
991PH/02 Patch to exigrep to allow it to work on syslog lines.
992
5b68f6e4
PH
993PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
994 fread() to skip over the body file's header line, because in Cygwin the
995 header line is locked and is inaccessible.
996
1ab52c69
PH
997PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
998 co-exist for some time) to make it clear that it is the Exim ID that is
999 referenced, not the Message-ID: header line.
1000
b07e6aa3
PH
1001PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1002 string_format() function, because snprintf() does not exist on all
1003 operating systems.
1004
254e032f
PH
1005PH/06 The use of forbid_filter_existstest now also locks out the use of the
1006 ${stat: expansion item.
1007
3af76a81
PH
1008PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1009 protocol synchronization error", to keep the pedants happy.
1010
2548ba04
PH
1011PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1012 well as for IRIX systems, when gcc is being used. See the host.c source
1013 file for comments.
1014
b6c6011d
PH
1015PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1016
cf39cf57
PH
1017PH/10 Named domain lists were not working if used in a queue_smtp_domains
1018 setting.
1019
f1513293
PH
1020PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1021 transport and to the smtp transport in LMTP mode.
1022
727549a4
PH
1023TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1024
af46795e
PH
1025PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1026 run a filter in a subprocess. This could lead to confusion in subsequent
1027 lookups in the parent process. There should also be a search_tidyup() at
1028 the end of the subprocess.
1029
d7b47fd0
PH
1030PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1031 only if the host matched helo_try_verify_hosts, which caused the
1032 verification to occur when the EHLO/HELO command was issued. The ACL just
1033 tested the remembered result. Now, if a previous verification attempt has
1034 not happened, "verify = helo" does it there and then.
1035
ee744174
JJ
1036JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1037
b582ab87
PH
1038TK/03 Fix log output including CR from clamd.
1039
41a13e0a
PH
1040PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1041 exist provoked a memory error which could cause a segfault.
1042
f625cc5a
PH
1043PH/15 Installed PCRE 6.2
1044
1045PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1046
21f7af35
PH
1047PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1048 of the problem. Specifically, suggested +O2 rather than +O1 for the
1049 HP-UX compiler.
1050
31480e42
PH
1051PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1052
2d280592
PH
1053PH/20 If a delivery was routed to a non-standard port by means of an SRV
1054 record, the port was not correctly logged when the outgoing_port log
1055 selector was set (it logged the transort's default port).
1056
7cd1141b
PH
1057PH/21 Added support for host-specific ports to manualroute, queryprogram,
1058 fallback_hosts, and "hosts" in the smtp transport.
1059
1060PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1061 host errors such as "Connection refused".
1062
750af86e
PH
1063PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1064 authentication with radiusclient 0.4.9:
1065
1066 - Error returned from rc_read_config was caught wrongly
1067 - Username/password not passed on to radius server due to wrong length.
1068
1069 The presumption is that some radiusclient API changes for 4.51/PH/17
1070 were not taken care of correctly. The code is still untested by me (my
1071 Linux distribution still has 0.3.2 of radiusclient), but it was
1072 contributed by a Radius user.
1073
1074PH/24 When doing a callout, the value of $domain wasn't set correctly when
1075 expanding the "port" option of the smtp transport.
1076
4304270b
TK
1077TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1078 while reading a MIME header. Thanks to Tom Hughes for a patch.
1079
750af86e
PH
1080PH/24 Include config.h inside local_scan.h so that configuration settings are
1081 available.
1082
64ffc24f
PH
1083PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1084 that in an ACL for RCPT (for example), you can examine exactly what was
1085 received.
1086
5dd9625b
PH
1087PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1088 commands, but it was not correctly comparing the address with the actual
1089 client host address. Thus, it would show the EHLO address in Received:
1090 header lines when this was not necessary.
1091
5591031b
PH
1092PH/27 Added the % operator to ${eval:}.
1093
ba18e66a
PH
1094PH/28 Exim tries to create and chdir to its spool directory when it starts;
1095 it should be ignoring failures (because with -C, for example, it has lost
1096 privilege). It wasn't ignoring creation failures other than "already
1097 exists".
1098
9cec981f
PH
1099PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1100 -bV or -d is used.
1101
aa2b5c79
PH
1102PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1103 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1104 too many continuations, the temporary file was not being removed, and the
1105 return code was incorrect.
aa2b5c79 1106
48a53b7f
PH
1107PH/31 Missing "BOOL" in function definition in filtertest.c.
1108
1c59d63b
PH
1109PH/32 Applied Sieve patches from the maintainer.
1110
671012da
TK
1111TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1112
1509d3a8
PH
1113PH/33 Added "verify = not_blind".
1114
1115PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1116 Local/Makefile (with some defaults set). These are used in built scripts
1117 such as exicyclog, but they have never been used in the exim_install
1118 script (though there are many overriding facilities there). I have
1119 arranged that the exim_install script now takes note of these two
1120 settings.
1121
1122PH/35 Installed configuration files for Dragonfly.
1123
2fe1a124
PH
1124PH/36 When a locally submitted message by a trusted user did not contain a
1125 From: header, and the sender address was obtained from -f or from an SMTP
1126 MAIL command, and the trusted user did not use -F to supply a sender
1127 name, $originator_name was incorrectly used when constructing a From:
1128 header. Furthermore, $originator_name was used for submission mode
1129 messages from external hosts without From: headers in a similar way,
1130 which is clearly wrong.
1131
8800895a
PH
1132PH/37 Added control=suppress_local_fixups.
1133
ccfdb010
PH
1134PH/38 When log_selector = +received_sender was set, and the addition of the
1135 sender made the log line's construction buffer exactly full, or one byte
1136 less than full, an overflow happened when the terminating "\n" was
1137 subsequently added.
1138
1130bfb0
PH
1139PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1140 when the result of a list match is failure because a DNS lookup failed.
1141
ebcb507f
PH
1142PH/40 RM_COMMAND is now used in the building process.
1143
c35e155c
PH
1144PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1145 the "build-* directories that it finds.
1146
95d1f782
PH
1147PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1148 address in a domain literal was a prefix of an interface address.
1149
fd6de02e
PH
1150PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1151 when verifying a sender address, unless rewrite_headers is false.
1152
58de37c5
PH
1153PH/44 Wrote a long comment about why errors_to addresses are verified as
1154 recipients, not senders.
1155
261cf466
TF
1156TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1157 the ratelimit ACL was added.
1158
3ee512ff
PH
1159PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1160
e08c430f
PH
1161PH/46 Added extra information about PostgreSQL errors to the error string.
1162
bef5a11f
PH
1163PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1164 avoiding the need to install special zones in a real server. This is
1165 backwards compatible; if it can't find the fake resolver, it drops back.
1166 Thus, both old and new test suites can be run.
1167
7546de58
TF
1168TF/02 Added util/ratelimit.pl
1169
e5d5a95f
TF
1170TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1171 clock is set back in time.
1172
2e88a017
TF
1173TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1174 Candler <B.Candler@pobox.com>.
1175
a5f65aa4
TF
1176TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1177 OK for addresses that are the result of redirections.
1178
e7726cbf
PH
1179PH/48 A number of further additions for the benefit of the new test suite,
1180 including a fake gethostbyname() that interfaces to the fake DNS resolver
1181 (see PH/47 above).
1182
a7fdad5b
TF
1183TF/06 The fix for widen_domains has also been applied to qualify_single and
1184 search_parents which are the other dnslookup options that can cause
1185 header rewrites.
1186
6af56900
PH
1187PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1188 type ("H").
1189
0925ede6
PH
1190PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1191
66afa403
TF
1192TF/07 Exim produced the error message "an SRV record indicated no SMTP
1193 service" if it encountered an MX record with an empty target hostname.
1194 The message is now "an MX or SRV record indicated no SMTP service".
1195
0154e85a
TF
1196TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1197 if the DNS of the sending site is misconfigured. This is quite a
1198 common situation. This change restores the behaviour of treating a
1199 helo verification defer as a failure.
1200
16f12c76
PH
1201PH/51 If self=fail was set on a router, the bounce message did not include the
1202 actual error message.
1203
bbe902f0 1204
e5a9dba6
PH
1205Exim version 4.52
1206-----------------
1207
1208TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1209
22c3b60b
PH
1210PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1211 command itself ended in error, the underlying message about the transport
1212 filter timeout was being overwritten with the pipe command error. Now the
1213 underlying error message should be appended to the second error message.
1214
06a9b4b5
PH
1215TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1216
c1ac6996
PH
1217PH/02 Reduce the amount of output that "make" produces by default. Full output
1218 can still be requested.
1219
9c7a242c
PH
1220PH/03 The warning log line about a condition test deferring for a "warn" verb
1221 was being output only once per connection, rather than after each
1222 occurrence (because it was using the same function as for successful
1223 "warn" verbs). This seems wrong, so I have changed it.
1224
87ba3f5f
PH
1225TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1226 it should not have, which might have caused a crash in the right
1227 circumstances, but probably never did.
1228
1229PH/04 Installed a modified version of Tony Finch's patch to make submission
1230 mode fix the return path as well as the Sender: header line, and to
1231 add a /name= option so that you can make the user's friendly name appear
1232 in the header line.
1233
29aba418
TF
1234TF/03 Added the control = fakedefer ACL modifier.
1235
fe0dab11
TF
1236TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1237 Mark Lowes for thorough testing.
870f6ba8 1238
11d337a4
TK
1239TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1240
1241TK/03 Merged latest SRS patch from Miles Wilton.
1242
415c8f3b
PH
1243PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1244 with the definition in sysexits.h (which is #included earlier).
1245 Fortunately, Exim does not actually use EX_OK. The code used to try to
1246 preserve the sysexits.h value, by assumimg that macro definitions were
1247 scanned for macro replacements. I have been disabused of this notion,
1248 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1249
958541e9
PH
1250PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1251 in the smtp transport. When a block could not be written in a single
1252 write() function, the timeout was being re-applied to each part-write.
1253 This seems wrong - if the receiver was accepting one byte at a time it
1254 would take for ever. The timeout is now adjusted when this happens. It
1255 doesn't have to be particularly precise.
1256
c206415f
TK
1257TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1258 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1259
2a4be8f9
PH
1260PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1261 without a domain if the check to <postmaster@domain> fails.
1262
1cba11c5
SC
1263SC/01 Eximstats: added -xls and the ability to specify output files
1264 (patch written by Frank Heydlauf).
1265
1266SC/02 Eximstats: use FileHandles for outputing results.
1267
1268SC/03 Eximstats: allow any combination of xls, txt, and html output.
1269
1270SC/04 Eximstats: fixed display of large numbers with -nvr option
1271
1272SC/05 Eximstats: fixed merging of reports with empty tables.
1273
1274SC/06 Eximstats: added the -include_original_destination flag
1275
1276SC/07 Eximstats: removed tabs and trailing whitespace.
1277
1005d00e
TK
1278TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1279
1280TK/06 MBOX spool code: Add real "From " MBOX separator line
1281 so the .eml file is really in mbox format (even though
1282 most programs do not really care). Patch from Alex Miller.
1283
1284TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1285 The latter is generated from $received_to and is only set if the
1286 message has one envelope recipient. SA can use these headers,
1287 obviously out-of-the-box. Patch from Alex Miller.
1288
9b4768fa
PH
1289PH/08 The ${def test on a variable was returning false if the variable's
1290 value was "0", contrary to what the specification has always said!
1291 The result should be true unless the variable is empty.
1292
1293PH/09 The syntax error of a character other than { following "${if
1294 def:variable_name" (after optional whitespace) was not being diagnosed.
1295 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1296 accidental colon was present, for example, could give incorrect results.
1297
0d7eb84a
PH
1298PH/10 Tidied the code in a number of places where the st_size field of a stat()
1299 result is used (not including appendfile, where other changes are about
1300 to be made).
1301
1302PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1303 This involved changing a lot of size variables from int to off_t. It
1304 should work with maildirs and everything.
1305
40727bee
TK
1306TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1307 spamd dying while we are connected to it.
1308
554d2369
TF
1309TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1310 <jgh@wizmail.org>
1311
1f922db1
PH
1312PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1313 function for BDB 4.3.
1314
ef213c3b
PH
1315PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1316
8ac170f3
PH
1317PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1318 the sources for PCRE have been re-arranged and more files are now
1319 involved.
1320
b1c749bb
PH
1321PH/15 The code I had for printing potentially long long variables in PH/11
1322 above was not the best (it lost precision). The length of off_t variables
1323 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1324 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1325 to be "long long int" or "long int". This is needed for the internal
1326 formatting function string_vformat().
b1c749bb 1327
4aac9b49
PH
1328PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1329 the configuration file to be ":syslog", then the script "guesses" where
1330 the logs files are, rather than using the compiled in default. In our
1331 case the guess is not the same as the compiled default, so the script
1332 suddenly stopped working when I started to use syslog. The patch checks
1333 to see if log_file_path is "". If so, it attempts to read it from exim
1334 with no configuration file to get the compiled in version, before it
1335 falls back to the previous guessing code."
1336
294520c8
TK
1337TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1338 implementing BATV in an Exim configuration. See NewStuff for the gory
1339 details.
1340
5bd022fe
PH
1341PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1342 Makefile that are specific to HP-UX.
1343
90e9ce59
PH
1344PH/18 If the "use_postmaster" option was set for a recipient callout together
1345 with the "random" option, the postmaster address was used as the MAIL
1346 FROM address for the random test, but not for the subsequent recipient
1347 test. It is now used for both.
1348
5ea81592
PH
1349PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1350 patch removes a few documentation additions to RFC 3028, because the
1351 latest draft now contains them. It adds the new en;ascii-case comparator
1352 and a new error check for 8bit text in MIME parts. Comparator and
1353 require names are now matched exactly. I enabled the subaddress
1354 extension, but it is not well tested yet (read: it works for me)."
1355
c6c2dc1d
PH
1356PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1357 rework some of the code of TK/09 above to avoid the hardwired use of
1358 "%lld" and "long long". Replaced the call to snprintf() with a call to
1359 string_vformat().
1360
fffffe4c
PH
1361PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1362 records point to non-existent hosts", "retry timeout exceeded", and
1363 "retry time not reached for any host after a long failure period".
ca02eafb 1364
9a26b6b2
PH
1365PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1366 experimental DomainKeys support:
1367
1368 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1369 (2) On an error such as an illegally used "control", the wrong name for
1370 the control was given.
1371
1372 These problems did NOT occur unless DomainKeys support was compiled.
1373
4aee0225
PH
1374PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1375
32d668a5
PH
1376PH/24 Added ${if match_ip condition.
1377
8187c3f3
PH
1378PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1379 databases so that it will be absolutely obvious if a crash occurs in the
1380 DB library. This is a regular occurrence (often caused by mis-matched
1381 db.h files).
1382
ff790e47 1383PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1384 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1385 picked up on a user's system that detects such things. There doesn't seem
1386 to be a gcc warning option for this - only an attribute that has to be
1387 put on the function's prototype. It seems that in Fedora Core 4 they have
1388 set this on a number of new functions. No doubt there will be more in due
1389 course.
ff790e47 1390
5417f6d1
PH
1391PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1392 specify a transport. However, if an address that was verified by such a
1393 router was the subject of a callout, Exim crashed because it tried to
1394 read the rcpt_include_affixes from the non-existent transport. Now it
1395 just assumes that the setting of that option is false. This bug was
1396 introduced by 4.51/PH/31.
1397
59cf8544
PH
1398PH/28 Changed -d+all to exclude +memory, because that information is very
1399 rarely of interest, but it makes the output a lot bigger. People tend to
1400 do -d+all out of habit.
1401
e7ad8a65
PH
1402PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1403 code in os-type was giving problems when libc.so lives in lib64, like on
1404 x86_64 Fedora Core.
1405
ade42478
PH
1406PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1407 aren't the modern standard, and it seems that some systems' include files
1408 don't always have them. Exim was already checking for some of the newer
1409 ones like T_AAAA, and defining it itself. I've added checks for all the
1410 record types that Exim uses.
1411
182ad5cf
PH
1412PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1413 not automatically generating a new one, as it is supposed to. This
1414 prevented TLS from working. If the file did exist, but contained invalid
1415 data, a new version was generated, as expected. It was only the case of a
1416 non-existent file that was broken.
1417
b0d9fc80
TK
1418TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1419 with a change in libdomainkeys > 0.64.
1420
1421TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1422 from DNS. If the selector record carries the flag, it now has
1423 precedence over the domain-wide flag.
1424
1425TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1426
47c7a64a
PH
1427PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1428 the use of a port name that isn't defined in /etc/services) occurred, the
1429 message was deferred as in a normal delivery, and thus remained on the
1430 spool, instead of being failed because of the mua_wrapper setting. This
1431 is now fixed, and I tidied up some of the mua_wrapper messages at the
1432 same time.
1433
a388bce4
SC
1434SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1435 the messages in a hash of arrays rather than using individual hashes.
1436 This is a bit cleaner and results in dramatic memory savings, albeit
1437 at a slight CPU cost.
1438
1439SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1440 as requested by Marc Sherman.
1441
1442SC/10 Eximstats: added histograms for user specified patterns as requested
1443 by Marc Sherman.
1444
0793e4ed
SC
1445SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1446
c58b88df
PH
1447PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1448 fopen() in the content-scanning modules that did not already have it.
1449
e7ad8a65 1450
7982096b
PH
1451Exim version 4.51
1452-----------------
1453
1a46a8c5
PH
1454TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1455 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1456
2f079f46 1457TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1458
1459TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1460
1461PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1462 to test Sieve filters that use "vacation".
1463
1464PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1465 that changes the way the GnuTLS parameters are stored in the cache file.
1466 The new format can be generated externally. For backward compatibility,
1467 if the data in the cache doesn't make sense, Exim assumes it has read an
1468 old-format file, and it generates new data and writes a new file. This
1469 means that you can't go back to an older release without removing the
1470 file.
1471
1472PH/03 A redirect router that has both "unseen" and "one_time" set does not
1473 work if there are any delivery delays because "one_time" forces the
1474 parent to be marked "delivered", so its unseen clone is never tried
1475 again. For this reason, Exim now forbids the simultaneous setting of
1476 these two options.
1477
1478PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1479 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1480 entry if you want to know the details. The fix, however, neglected to
1481 consider the case when local delivery batching is involved. The test for
1482 "previously delivered" was not happening when checking to see if an
1483 address could be batched with a previous (undelivered) one; under
1484 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1485 address.
1a46a8c5
PH
1486
1487PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1488 in its include files, and this causes problems building Exim.
1489
1490PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1491 header_syntax) but Exim was just ignoring anything given after a slash.
1492 In particular, this caused confusion with an attempt to use "verify =
1493 reverse_host_lookup/defer_ok". An error is now given when options are
1494 supplied for verify items that do not have them. (Maybe reverse_host_
1495 lookup should have a defer_ok option, but that's a different point.)
1496
1497PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1498 defined by RFC 821) to 2048, because there were problems with some AUTH
1499 commands, and RFC 1869 says the size should be increased for extended
1500 SMTP commands that take arguments.
1501
1502PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1503 Finch).
1504
1505PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1506 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1507
49c2d5ea
PH
1508PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1509 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1510 whatever). Otherwise the password may appear in the log. Following change
1511 PH/42 below, there is no longer a chance of it appearing in a bounce
1512 message.
49c2d5ea 1513
bf759a8b
PH
1514PH/11 Installed exipick version 20050225.0 from John Jetmore.
1515
83364d30
PH
1516PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1517 of its addresses was ever tried. (Bugzilla bug #2.)
1518
7999bbd7
PH
1519PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1520 the result incorrectly in the debug output. (It correctly added a newline
1521 to what was transported.)
1522
7dbf77c9
PH
1523TF/01 Added $received_time.
1524
74e0617f
PH
1525PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1526 commented out examples of how to interface to a virus scanner and to
1527 SpamAssassin. Also added commented examples of av_scanner and
1528 spamd_address settings.
1529
2f079f46
PH
1530PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1531 and controls are allowed in which ACLs. There were a couple of minor
1532 errors. Some of the entries in the conditions table (which is a table of
1533 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1534 negation of where the condition IS allowed.
1535
8c841523
PH
1536PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1537
7766a4f0
PH
1538PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1539 header file does not have a version number, so I've had to invent a new
1540 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1541 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1542 radiusclient), but it was contributed by a Radius user.
1543
8b417f2c
PH
1544PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1545 files or directories, for OpenSSL.
1546
901f42cb
PH
1547PH/19 When an Exim process that is running as root has to create an Exim log
1548 file, it does so in a subprocess that runs as exim:exim so as to get the
1549 ownership right at creation (otherwise, other Exim processes might see
1550 the file with the wrong ownership). There was no test for failure of this
1551 fork() call, which would lead to the process getting stuck as it waited
1552 for a non-existent subprocess. Forks do occasionally fail when resources
1553 run out. I reviewed all the other calls to fork(); they all seem to check
1554 for failure.
1555
f9b9210e
PH
1556PH/20 When checking for unexpected SMTP input at connect time (before writing
1557 the banner), Exim was not dealing correctly with a non-positive return
1558 from the read() function. If the client had disconnected by this time,
1559 the result was a log entry for a synchronization error with an empty
1560 string after "input=" when read() returned zero. If read() returned -1
1561 (an event I could not check), uninitialized data bytes were printed.
1562 There were reports of junk text (parts of files, etc) appearing after
1563 "input=".
1564
54cdb463
PH
1565PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1566
cf00dad6
PH
1567PH/22 Added support for macro redefinition, and (re)definition in between
1568 driver and ACL definitions.
1569
acb1b346
PH
1570PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1571 forgetting to use the resulting value; it was using the unexpanded value.
1572
c5ddb310
PH
1573PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1574 hadn't been configured. The fix is from Juergen Kreileder, who
1575 understands it better than I do:
1576
1577 "Here's what I see happening with three configured cyrus_sasl
1578 authenticators configured (plain, login, cram-md5):
1579
1580 On startup auth_cyrus_sasl_init() gets called for each of these.
1581 This means three calls to sasl_listmech() without a specified mech_list.
1582 => SASL tests which mechs of all available mechs actually work
1583 => three warnings about OTP not working
1584 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1585
1586 With the patch, sasl_listmech() also gets called three times. But now
1587 SASL's mech_list option is set to the server_mech specified in the the
1588 authenticator. Or in other words, the answer from sasl_listmech()
1589 gets limited to just the mech you're testing for (which is different
1590 for each call.)
1591 => the return list contains just 'plain' or 'login', 'cram-md5' or
1592 nothing depending on the value of ob->server_mech.
1593
1594 I've just tested the patch: Authentication still works fine,
1595 unavailable mechs specified in the exim configuration are still
1596 caught, and the auth.log warnings about OTP are gone."
1597
31619da6
PH
1598PH/25 When debugging is enabled, the contents of the command line are added
1599 to the debugging output, even when log_selector=+arguments is not
1600 specified.
1601
bebaf0fc
PH
1602PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1603 answer is "GNU", and only if the return is "GNU/something" is the answer
1604 "Linux".
1605
475fe28a
PH
1606PH/27 $acl_verify_message is now set immediately after the failure of a
1607 verification in an ACL, and so is available in subsequent modifiers. In
1608 particular, the message can be preserved by coding like this:
1609
1610 warn !verify = sender
1611 set acl_m0 = $acl_verify_message
1612
1613 Previously, $acl_verify_message was set only while expanding "message"
1614 and "log_message" when a very denied access.
1615
7e8bec7a
PH
1616PH/28 Modified OS/os.c-Linux with
1617
1618 -#ifndef OS_LOAD_AVERAGE
1619 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1620
1621 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1622 nomenclature these days.)
1623
e4a89c47
PH
1624PH/29 Installed patch from the Sieve maintainer that adds the options
1625 sieve_useraddress and sieve_subaddress to the redirect router.
1626
5ca2a9a1
PH
1627PH/30 In these circumstances:
1628 . Two addresses routed to the same list of hosts;
1629 . First host does not offer TLS;
1630 . First host accepts first address;
1631 . First host gives temporary error to second address;
1632 . Second host offers TLS and a TLS session is established;
1633 . Second host accepts second address.
1634 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1635 and peerdn, if requested) that were in fact used only for the second
1636 address.
7e8bec7a 1637
c688b954
PH
1638PH/31 When doing a callout as part of verifying an address, Exim was not paying
1639 attention to any local part prefix or suffix that was matched by the
1640 router that accepted the address. It now behaves in the same way as it
1641 does for delivery: the affixes are removed from the local part unless
1642 rcpt_include_affixes is set on the transport.
1643
fed77020
PH
1644PH/32 Add the sender address, as F=<...>, to the log line when logging a
1645 timeout during the DATA phase of an incoming message.
1646
7fe1560f
PH
1647PH/33 Sieve envelope tests were broken for match types other than :is. I have
1648 applied a patch sanctioned by the Sieve maintainer.
c688b954 1649
ebb6e6d5
PH
1650PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1651 the uid or gid is negative. A case of a negative gid caused this to be
1652 noticed. The fix allows for either to be negative.
1653
9c4e8f60
PH
1654PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1655 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1656 overlooked.
1657
1658PH/36 The change PH/12 above was broken. Fixed it.
1659
d7174846
PH
1660PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1661 the grounds that routing the same address twice would always produce the
1662 same answer. This might have been true once, but it is certainly no
1663 longer true now. Routing a child address may depend on the previous
1664 routing that produced that child. Some complicated redirection strategies
1665 went wrong when messages had multiple recipients, and made Exim's
1666 behaviour dependent on the order in which the addresses were given.
1667
1668 I have moved the duplicate checking until after the routing is complete.
1669 Exim scans the addresses that are assigned to local and remote
1670 transports, and removes any duplicates. This means that more work will be
1671 done, as duplicates will always all be routed, but duplicates are
1672 presumably rare, so I don't expect this is of any significance.
1673
1674 For deliveries to pipes, files, and autoreplies, the duplicate checking
1675 still happens during the routing process, since they are not going to be
1676 routed further.
1677
cfe75fc3
PH
1678PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1679 It corrects a timeout issue with spamd. This is Ian's comment: "The
1680 background is that sometimes spamd either never reads data from a
1681 connection it has accepted, or it never writes response data. The exiscan
1682 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1683 blindly assumes that writes won't block so it may never time out."
1684
be22d70e
PH
1685PH/39 Allow G after quota size as well as K and M.
1686
0612b098
PH
1687PH/40 The value set for $authenticated_id in an authenticator may not contain
1688 binary zeroes or newlines because the value is written to log lines and
1689 to spool files. There was no check on this. Now the value is run through
1690 the string_printing() function so that such characters are converted to
1691 printable escape sequences.
1692
2e0c1448
PH
1693PH/41 $message_linecount is a new variable that contains the total number of
1694 lines in the message. Compare $body_linecount, which is the count for the
1695 body only.
1696
447d236c
PH
1697PH/42 Exim no longer gives details of delivery errors for specific addresses in
1698 bounce and delay warning messages, except in certain special cases, which
1699 are as follows:
1700
1701 (a) An SMTP error message from a remote host;
1702 (b) A message specified in a :fail: redirection;
1703 (c) A message specified in a "fail" command in a system filter;
1704 (d) A message specified in a FAIL return from the queryprogram router;
1705 (e) A message specified by the cannot_route_message router option.
1706
1707 In these cases only, Exim does include the error details in bounce and
1708 warning messages. There are also a few cases where bland messages such
1709 as "unrouteable address" or "local delivery error" are given.
1710
d20976dc
PH
1711PH/43 $value is now also set for the "else" part of a ${run expansion.
1712
f656d135
PH
1713PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1714 being worked on, but at least Exim now implements the latest version to
1715 play with."
1716
2e2a30b4
PH
1717PH/45 In a pipe transport, although a timeout while waiting for the pipe
1718 process to complete was treated as a delivery failure, a timeout while
1719 writing the message to the pipe was logged, but erroneously treated as a
1720 successful delivery. Such timeouts include transport filter timeouts. For
1721 consistency with the overall process timeout, these timeouts are now
1722 treated as errors, giving rise to delivery failures by default. However,
1723 there is now a new Boolean option for the pipe transport called
1724 timeout_defer, which, if set TRUE, converts the failures into defers for
1725 both kinds of timeout. A transport filter timeout is now identified in
1726 the log output.
1727
9176e9f0
PH
1728PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1729 systems where "make" and "gmake" are different, calling "gmake" at top
1730 level broke things. I've arranged for the value of $(MAKE) to be passed
1731 from the Makefile to this script so that it can call the same version of
1732 "make".
1733
7982096b 1734
bbe902f0
PH
1735A note about Exim versions 4.44 and 4.50
1736----------------------------------------
1737
1738Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1739changes of various kinds. As a consequence, a big documentation update was
1740needed. This delayed the release for rather longer than seemed good, especially
1741in the light of a couple of (minor) security issues. Therefore, the changes
1742that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1743release. So 4.44 and 4.50 are in effect two different branches that both start
1744from 4.43.
1745
1746I have left the 4.50 change log unchanged; it contains all the changes since
17474.43. The change log for 4.44 is below; many of its items are identical to
1748those for 4.50. This seems to be the most sensible way to preserve the
1749historical information.
1750
1751
f7b63901 1752Exim version 4.50
495ae4b0
PH
1753-----------------
1754
5fe762f6
PH
1755 1. Minor wording change to the doc/README.SIEVE file.
1756
139059f6 1757 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1758 computation of the current number of files was incorrect.
495ae4b0 1759
7086e875
PH
1760 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1761 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1762 place.
1763
35af9f61
PH
1764 4. Give more explanation in the error message when the command for a transport
1765 filter fails to execute.
1766
b668c215
PH
1767 5. There are several places where Exim runs a non-Exim command in a
1768 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1769 was being done only for the command run by the queryprogram router. It is
1770 now done for all such subprocesses. The other cases are: ${run, transport
1771 filters, and the commands run by the lmtp and pipe transports.
1772
a494b1e1
PH
1773 6. Added CONFIGURE_GROUP build-time option.
1774
1775 7. Some older OS have a limit of 256 on the maximum number of file
1776 descriptors. Exim was using setrlimit() to set 1000 as a large value
1777 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1778 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1779
c5fcb476
PH
1780 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1781 was an oversight, and furthermore, ever since the addition of extra
1782 controls (e.g. 4.43/32), the checks on when to allow different forms of
1783 "control" were broken. There should now be diagnostics for all cases when a
1784 control that does not make sense is encountered.
1785
69358f02
PH
1786 9. Added the /retain_sender option to "control=submission".
1787
5be20824
PH
178810. $recipients is now available in the predata ACL (oversight).
1789
eb2c0248
PH
179011. Tidy the search cache before the fork to do a delivery from a message
1791 received from the command line. Otherwise the child will trigger a lookup
1792 failure and thereby defer the delivery if it tries to use (for example) a
1793 cached ldap connection that the parent has called unbind on.
1794
2a3eea10
PH
179512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1796 of $address_data from the recipient verification was clobbered by the
1797 sender verification.
1798
179913. The value of address_data from a sender verification is now available in
1800 $sender_address_data in subsequent conditions in the ACL statement.
1801
23c7ff99
PH
180214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1803
4deaf07d
PH
180415. Added a new option "connect=<time>" to callout options, to set a different
1805 connection timeout.
1806
926e1192
PH
180716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1808 was its contents. (It was OK if the option was not defined at all.)
1809
650edc6f
PH
181017. A "Completed" log line is now written for messages that are removed from
1811 the spool by the -Mrm option.
1812
2c7db3f5
PH
181318. New variables $sender_verify_failure and $recipient_verify_failure contain
1814 information about exactly what failed.
1815
3d235903
PH
181619. Added -dd to debug only the daemon process.
1817
7c7ad977
PH
181820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1819 handles timeouts, both on the server side and network timeouts. Renamed the
1820 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1821
981756db
PH
182221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1823 It is now set to "smtps".
1824
d4eb88df
PH
182522. $host_address is now set to the target address during the checking of
1826 ignore_target_hosts.
1827
182823. When checking ignore_target_hosts for an ipliteral router, no host name was
1829 being passed; this would have caused $sender_host_name to have been used if
1830 matching the list had actually called for a host name (not very likely,
1831 since this list is usually IP addresses). A host name is now passed as
1832 "[x.x.x.x]".
1833
7d468ab8
PH
183424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1835 code that specifies a non-restarting handler (typically sigaction() in
1836 modern systems) in an attempt to fix a rare and obscure crash bug.
1837
183825. Narrowed the window for a race in the daemon that could cause it to ignore
1839 SIGCHLD signals. This is not a major problem, because they are used only to
1840 wake it up if nothing else does.
1841
62c0818f
PH
184226. A malformed maildirsize file could cause Exim to calculate negative values
1843 for the mailbox size or file count. Odd effects could occur as a result.
1844 The maildirsize information is now recalculated if the size or filecount
1845 end up negative.
1846
26034054
PH
184727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1848 support for a long time. Removed HAVE_SYS_VFS_H.
1849
af66f652
PH
185028. Installed the latest version of exipick from John Jetmore.
1851
90af77f4
PH
185229. In an address list, if the pattern was not a regular expression, an empty
1853 subject address (from a bounce message) matched only if the pattern was an
1854 empty string. Non-empty patterns were not even tested. This was the wrong
1855 because it is perfectly reasonable to use an empty address as part of a
1856 database query. An empty address is now tested by patterns that are
1857 lookups. However, all the other forms of pattern expect the subject to
1858 contain a local part and a domain, and therefore, for them, an empty
1859 address still always fails if the pattern is not itself empty.
1860
d8ef3577
PH
186130. Exim went into a mad DNS loop when attempting to do a callout where the
1862 host was specified on an smtp transport, and looking it up yielded more
1863 than one IP address.
1864
5cb8cbc6
PH
186531. Re-factored the code for checking spool and log partition space into a
1866 function that finds that data and another that does the check. The former
1867 is then used to implement four new variables: $spool_space, $log_space,
1868 $spool_inodes, and $log_inodes.
1869
14702f5b
PH
187032. The RFC2047 encoding function was originally intended for short strings
1871 such as real names; it was not keeping to the 75-character limit for
1872 encoded words that the RFC imposes. It now respects the limit, and
1873 generates multiple encoded words if necessary. To be on the safe side, I
1874 have increased the buffer size for the ${rfc2047: expansion operator from
1875 1024 to 2048 bytes.
1876
063b1e99
PH
187733. It is now permitted to omit both strings after an "if" condition; if the
1878 condition is true, the result is "true". As before, when the second string
1879 is omitted, a false condition yields an empty string. This makes it less
1880 cumbersome to write custom ACL and router conditions.
1881
652e1b65
PH
188234. Failure to deliver a bounce message always caused it to be frozen, even if
1883 there was an errors_to setting on the router. The errors_to setting is now
1884 respected.
1885
6f0c9a4f
PH
188635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1887 canonical form (fully expanded) before being placed in
1888 $sender_host_address.
1889
33397d19
PH
189036. The table in the code that translates DNS record types into text (T_A to
1891 "A" for instance) was missing entries for NS and CNAME. It is just possible
1892 that this could have caused confusion if both these types were looked up
1893 for the same domain, because the text type is used as part of Exim's
1894 per-process caching. But the chance of anyone hitting this buglet seems
1895 very small.
1896
7bb56e1f
PH
189737. The dnsdb lookup has been extended in a number of ways.
1898
1899 (1) There is a new type, "zns", which walks up the domain tree until it
1900 finds some nameserver records. It should be used with care.
1901
ea3bc19b
PH
1902 (2) There is a new type, "mxh", which is like "mx" except that it returns
1903 just the host names, not the priorities.
1904
1905 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1906 looked up. The behaviour when one of the lookups defers can be
1907 controlled by a keyword.
7bb56e1f 1908
ea3bc19b 1909 (4) It is now possible to specify the separator character for use when
7bb56e1f 1910 multiple records are returned.
33397d19 1911
0bcb2a0e
PH
191238. The dnslists ACL condition has been extended: it is now possible to supply
1913 a list of IP addresses and/or domains to be looked up in a particular DNS
1914 domain.
1915
2ac0e484
PH
191639. Added log_selector=+queue_time_overall.
1917
4e1fde53
PH
191840. When running the queue in the test harness, wait just a tad after forking a
1919 delivery process, to get repeatability of debugging output.
1920
de365ded
PH
192141. Include certificate and key file names in error message when GnuTLS fails
1922 to set them up, because the GnuTLS error message doesn't include the name
1923 of the failing file when there is a problem reading it.
1924
f05da2e8
PH
192542. Allow both -bf and -bF in the same test run.
1926
d6453af2
PH
192743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1928
f7b63901
PH
192944. The "Exiscan patch" is now merged into the mainline Exim source.
1930
193145. Sometimes the final signoff response after QUIT could fail to get
1932 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1933 < 0 before doing a fflush(). This bug looks as though it goes back to the
1934 introduction of TLS in release 3.20, but "sometimes" must have been rare
1935 because the tests only now provoked it.
1936
a444213a
PH
193746. Reset the locale to "C" after calling embedded Perl, in case it was changed
1938 (this can affect the format of dates).
1939
0ec020ea
PH
194047. exim_tidydb, when checking for the continued existence of a message for
1941 which it has found a message-specific retry record, was not finding
1942 messages that were in split spool directories. Consequently, it was
1943 deleting retry records that should have stayed in existence.
1944
b1206957
PH
194548. Steve fixed some bugs in eximstats.
1946
194749. The SPA authentication driver was not abandoning authentication and moving
1948 on to the next authenticator when an expansion was forced to fail,
1949 contradicting the general specification for all authenticators. Instead it
1950 was generating a temporary error. It now behaves as specified.
1951
26dd5a95
PH
195250. The default ordering of permitted cipher suites for GnuTLS was pessimal
1953 (the order specifies the preference for clients). The order is now AES256,
1954 AES128, 3DES, ARCFOUR128.
1955
343b2385
PH
195651. Small patch to Sieve code - explicitly set From: when generating an
1957 autoreply.
1958
1c5466b9
PH
195952. Exim crashed if a remote delivery caused a very long error message to be
1960 recorded - for instance if somebody sent an entire SpamAssassin report back
1961 as a large number of 550 error lines. This bug was coincidentally fixed by
1962 increasing the size of one of Exim's internal buffers (big_buffer) that
1963 happened as part of the Exiscan merge. However, to be on the safe side, I
1964 have made the code more robust (and fixed the comments that describe what
1965 is going on).
1966
55ee9ee3
PH
196753. Now that there can be additional text after "Completed" in log lines (if
1968 the queue_time_overall log selector is set), a one-byte patch to exigrep
1969 was needed to allow it to recognize "Completed" as not the last thing in
1970 the line.
1971
d38f8232
PH
197254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1973 patch that reportedly fixes this has been added. I am not expert enough to
1974 create a test for it. This is what the patch creator wrote:
1975
1976 "I found a little strange behaviour of ldap code when working with
1977 Windows 2003 AD Domain, where users was placed in more than one
1978 Organization Units. When I tried to give exim partial DN, the exit code
1979 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1980 But simultaneously result of request was absolutely normal ldap result,
1981 so I produce this patch..."
1982
3295e65b
PH
1983 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1984 REFERENCE, so I have modified the code to exclude the patch when that macro
1985 is not defined.
1986
7102e136
PH
198755. Some experimental protocols are using DNS PTR records for new purposes. The
1988 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1989 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1990 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1991 CAN-2005-0021
7102e136 1992
3ca0ba97
PH
199356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1994
c2bcbe20
PH
199557. Double the size of the debug message buffer (to 2048) so that more of very
1996 long debug lines gets shown.
1997
18ce445d
PH
199858. The exicyclog utility now does better if the number of log files to keep
1999 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2000
1f5b4c3d
PH
200159. Two changes related to the smtp_active_hostname option:
2002
2003 (1) $smtp_active_hostname is now available as a variable.
2004 (2) The default for smtp_banner uses $smtp_active_hostname instead
2005 of $primary_hostname.
2006
b975ba52
PH
200760. The host_aton() function is supposed to be passed a string that is known
2008 to be a valid IP address. However, in the case of IPv6 addresses, it was
2009 not checking this. This is a hostage to fortune. Exim now panics and dies
2010 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2011 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2012 components; fortuitously, this particular loophole had already been fixed
2013 by change 4.50/55 above.
2014
2015 If there are any other similar loopholes, the new check in host_aton()
2016 itself should stop them being exploited. The report I received stated that
2017 data on the command line could provoke the exploit when Exim was running as
2018 exim, but did not say which command line option was involved. All I could
2019 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2020 running as the user.
ea3a6f44 2021 CAN-2005-0021
85b87bc2
PH
2022
202361. There was a buffer overflow vulnerability in the SPA authentication code
2024 (which came originally from the Samba project). I have added a test to the
2025 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2026 CAN-2005-0022
b975ba52 2027
17ffcae7
PH
202862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2029 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2030
d95f9fdb
PH
203163. The daemon start-up calls getloadavg() while still root for those OS that
2032 need the first call to be done as root, but it missed one case: when
2033 deliver_queue_load_max is set with deliver_drop_privilege. This is
2034 necessary for the benefit of the queue runner, because there is no re-exec
2035 when deliver_drop_privilege is set.
2036
86b8287f
PH
203764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2038 This has been fixed.
2039
60dc5e56
PH
204065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2041 was in use, was not putting the data itself into the right store pool;
2042 consequently, it could be overwritten for a subsequent message in the same
2043 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2044 the caching.)
2045
533244af
PH
204666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2047
a5a28604
PH
204867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2049 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2050 the function were treating the return as a boolean value, which happened to
2051 work because 0=false and not-0=true, but is not correct code.
2052
7e634d24
PH
205368. The host_aton() function was not handling scoped IPv6 addresses (those
2054 with, for example, "%eth0" on the end) correctly.
2055
3e11c26b
PH
205669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2057 negated items (that is, ~something) in unsigned ints. Some compilers
2058 apparently mutter when there is no cast.
2059
6729cf78
PH
206070. If an address verification called from an ACL failed, and did not produce a
2061 user-specific message (i.e. there was only a "system" message), nothing was
2062 put in $acl_verify_message. In this situation, it now puts the system
2063 message there.
2064
00f00ca5
PH
206571. Change 4.23/11 added synchronization checking at the start of an SMTP
2066 session; change 4.31/43 added the unwanted input to the log line - except
2067 that it did not do this in the start of session case. It now does.
2068
c9bdd01c
PH
206972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2070 This is wrong and can cause the other end to generate a synchronization
2071 error if it is another Exim or anything else that does the synchronization
2072 check. A QUIT command is no longer sent after a timeout.
2073
d43194df
PH
207473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2075 during host lookups.
2076
fe5b5d0b
PH
207774. The defer_ok option of callout verification was not working if it was used
2078 when verifying addresses in header lines, that is, for this case:
2079
2080 verify = header_sender/callout=defer_ok
2081
76a2d7ba
PH
208275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2083 those file descriptors could be used for SMTP connections. If anything
2084 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2085 could be sent to the SMTP client, causing chaos. The daemon now opens
2086 stdin, stdout, and stderr to /dev/null when it puts itself into the
2087 background.
2088
208976. Arrange for output from Perl's "warn" command to be written to Exim's main
2090 log by default. The user can override this with suitable Perl magic.
2091
04f7d5b9
PH
209277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2093 the log message when discard triggers, was not working for the DATA ACL or
2094 for the non-SMTP ACL.
2095
bc60667e
PH
209678. Error message wording change in sieve.c.
2097
bb6e88ff
PH
209879. If smtp_accept_max_per_host was set, the number of connections could be
2099 restricted to fewer than expected, because the daemon was trying to set up
2100 a new connection before checking whether the processes handling previous
2101 connections had finished. The check for completed processes is now done
2102 earlier. On busy systems, this bug wouldn't be noticed because something
2103 else would have woken the daemon, and it would have reaped the completed
2104 process earlier.
2105
1e70f85b
PH
210680. If a message was submitted locally by a user whose login name contained one
2107 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2108 It caused a spool format error. I have fixed the spool reading code. A
2109 related problem was that the "from" clause in the Received: line became
2110 illegal because of the space(s). It is now covered by ${quote_local_part.
2111
211281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2113 tables).
2114
4e01f9d6
PH
211582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2116
1ee1cef2
PH
211783. Patch from Sieve maintainer to fix unterminated string problem in
2118 "vacation" handling.
2119
6e2b4ccc
PH
212084. Some minor changes to the Linux configuration files to help with other
2121 OS variants using glibc.
2122
8e669ac1
PH
212385. One more patch for Sieve to update vacation handling to latest spec.
2124
495ae4b0 2125
bbe902f0
PH
2126----------------------------------------------------
2127See the note above about the 4.44 and 4.50 releases.
2128----------------------------------------------------
2129
2130
2131Exim version 4.44
2132-----------------
2133
2134 1. Change 4.43/35 introduced a bug that caused file counts to be
2135 incorrectly computed when quota_filecount was set in an appendfile
2136 transport
2137
2138 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2139 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2140 place.
2141
2142 3. Give more explanation in the error message when the command for a transport
2143 filter fails to execute.
2144
2145 4. There are several places where Exim runs a non-Exim command in a
2146 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2147 was being done only for the command run by the queryprogram router. It is
2148 now done for all such subprocesses. The other cases are: ${run, transport
2149 filters, and the commands run by the lmtp and pipe transports.
2150
2151 5. Some older OS have a limit of 256 on the maximum number of file
2152 descriptors. Exim was using setrlimit() to set 1000 as a large value
2153 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2154 systems. I've change it so that if it can't get 1000, it tries for 256.
2155
2156 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2157 was an oversight, and furthermore, ever since the addition of extra
2158 controls (e.g. 4.43/32), the checks on when to allow different forms of
2159 "control" were broken. There should now be diagnostics for all cases when a
2160 control that does not make sense is encountered.
2161
2162 7. $recipients is now available in the predata ACL (oversight).
2163
2164 8. Tidy the search cache before the fork to do a delivery from a message
2165 received from the command line. Otherwise the child will trigger a lookup
2166 failure and thereby defer the delivery if it tries to use (for example) a
2167 cached ldap connection that the parent has called unbind on.
2168
2169 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2170 of $address_data from the recipient verification was clobbered by the
2171 sender verification.
2172
217310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2174 was its contents. (It was OK if the option was not defined at all.)
2175
217611. A "Completed" log line is now written for messages that are removed from
2177 the spool by the -Mrm option.
2178
217912. $host_address is now set to the target address during the checking of
2180 ignore_target_hosts.
2181
218213. When checking ignore_target_hosts for an ipliteral router, no host name was
2183 being passed; this would have caused $sender_host_name to have been used if
2184 matching the list had actually called for a host name (not very likely,
2185 since this list is usually IP addresses). A host name is now passed as
2186 "[x.x.x.x]".
2187
218814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2189 code that specifies a non-restarting handler (typically sigaction() in
2190 modern systems) in an attempt to fix a rare and obscure crash bug.
2191
219215. Narrowed the window for a race in the daemon that could cause it to ignore
2193 SIGCHLD signals. This is not a major problem, because they are used only to
2194 wake it up if nothing else does.
2195
219616. A malformed maildirsize file could cause Exim to calculate negative values
2197 for the mailbox size or file count. Odd effects could occur as a result.
2198 The maildirsize information is now recalculated if the size or filecount
2199 end up negative.
2200
220117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2202 support for a long time. Removed HAVE_SYS_VFS_H.
2203
ea3a6f44 220418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2205
220619. Allow an empty sender to be matched against a lookup in an address list.
2207 Previously the only cases considered were a regular expression, or an
2208 empty pattern.
2209
221020. Exim went into a mad DNS lookup loop when doing a callout where the
2211 host was specified on the transport, if the DNS lookup yielded more than
2212 one IP address.
2213
ea3a6f44
NM
221421. The RFC2047 encoding function was originally intended for short strings
2215 such as real names; it was not keeping to the 75-character limit for
2216 encoded words that the RFC imposes. It now respects the limit, and
2217 generates multiple encoded words if necessary. To be on the safe side, I
2218 have increased the buffer size for the ${rfc2047: expansion operator from
2219 1024 to 2048 bytes.
bbe902f0 2220
ea3a6f44
NM
222122. Failure to deliver a bounce message always caused it to be frozen, even if
2222 there was an errors_to setting on the router. The errors_to setting is now
2223 respected.
bbe902f0
PH
2224
222523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2226 canonical form (fully expanded) before being placed in
2227 $sender_host_address.
2228
222924. Updated eximstats to version 1.33
2230
ea3a6f44
NM
223125. Include certificate and key file names in error message when GnuTLS fails
2232 to set them up, because the GnuTLS error message doesn't include the name
2233 of the failing file when there is a problem reading it.
bbe902f0
PH
2234
223526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2236 As per change 25.
bbe902f0 2237
ea3a6f44
NM
223827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2239 (this can affect the format of dates).
bbe902f0 2240
ea3a6f44
NM
224128. exim_tidydb, when checking for the continued existence of a message for
2242 which it has found a message-specific retry record, was not finding
2243 messages that were in split spool directories. Consequently, it was
2244 deleting retry records that should have stayed in existence.
bbe902f0
PH
2245
224629. eximstats updated to version 1.35
2247 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2248 1.35 - bugfix such that pie charts by volume are generated correctly
2249
ea3a6f44
NM
225030. The SPA authentication driver was not abandoning authentication and moving
2251 on to the next authenticator when an expansion was forced to fail,
2252 contradicting the general specification for all authenticators. Instead it
2253 was generating a temporary error. It now behaves as specified.
bbe902f0 2254
ea3a6f44
NM
225531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2256 (the order specifies the preference for clients). The order is now AES256,
2257 AES128, 3DES, ARCFOUR128.
bbe902f0 2258
ea3a6f44
NM
225931. Small patch to Sieve code - explicitly set From: when generating an
2260 autoreply.
bbe902f0 2261
ea3a6f44
NM
226232. Exim crashed if a remote delivery caused a very long error message to be
2263 recorded - for instance if somebody sent an entire SpamAssassin report back
2264 as a large number of 550 error lines. This bug was coincidentally fixed by
2265 increasing the size of one of Exim's internal buffers (big_buffer) that
2266 happened as part of the Exiscan merge. However, to be on the safe side, I
2267 have made the code more robust (and fixed the comments that describe what
2268 is going on).
bbe902f0 2269
ea3a6f44
NM
227033. Some experimental protocols are using DNS PTR records for new purposes. The
2271 keys for these records are domain names, not reversed IP addresses. The
2272 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2273 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2274 CAN-2005-0021
2275
ea3a6f44
NM
227634. The host_aton() function is supposed to be passed a string that is known
2277 to be a valid IP address. However, in the case of IPv6 addresses, it was
2278 not checking this. This is a hostage to fortune. Exim now panics and dies
2279 if the condition is not met. A case was found where this could be provoked
2280 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2281 components; fortuitously, this particular loophole had already been fixed
2282 by change 4.50/55 or 4.44/33 above.
2283
2284 If there are any other similar loopholes, the new check in host_aton()
2285 itself should stop them being exploited. The report I received stated that
2286 data on the command line could provoke the exploit when Exim was running as
2287 exim, but did not say which command line option was involved. All I could
2288 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2289 running as the user.
bbe902f0
PH
2290 CAN-2005-0021
2291
ea3a6f44
NM
229235. There was a buffer overflow vulnerability in the SPA authentication code
2293 (which came originally from the Samba project). I have added a test to the
2294 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2295 CAN-2005-0022
2296
ea3a6f44
NM
229736. The daemon start-up calls getloadavg() while still root for those OS that
2298 need the first call to be done as root, but it missed one case: when
2299 deliver_queue_load_max is set with deliver_drop_privilege. This is
2300 necessary for the benefit of the queue runner, because there is no re-exec
2301 when deliver_drop_privilege is set.
bbe902f0 2302
ea3a6f44
NM
230337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2304 was in use, was not putting the data itself into the right store pool;
2305 consequently, it could be overwritten for a subsequent message in the same
2306 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2307 the caching.)
bbe902f0 2308
ea3a6f44
NM
230938. Sometimes the final signoff response after QUIT could fail to get
2310 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2311 < 0 before doing a fflush(). This bug looks as though it goes back to the
2312 introduction of TLS in release 3.20, but "sometimes" must have been rare
2313 because the tests only now provoked it.
bbe902f0
PH
2314
2315
495ae4b0
PH
2316Exim version 4.43
2317-----------------
2318
2319 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2320 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2321 Now it returns an integer. A number of calls were still expecting a T/F
2322 return. Fortuitously, in all cases, the tests worked in OK situations,
2323 which is the norm. However, things would have gone wrong on any write
2324 failures on the smtp file descriptor. This function is used when sending
2325 messages over SMTP and also when doing verify callouts.
2326
2327 2. When Exim is called to do synchronous delivery of a locally submitted
2328 message (the -odf or -odi options), it no longer closes stderr before doing
2329 the delivery.
2330
2331 3. Implemented the mua_wrapper option.
2332
2333 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2334
2335 5. Implemented the functions header_remove(), header_testname(),
2336 header_add_at_position(), and receive_remove_recipient(), and exported them
2337 to local_scan().
2338
2339 6. If an ACL "warn" statement specified the addition of headers, Exim already
2340 inserted X-ACL-Warn: at the start if there was no header name. However, it
2341 was not making this test for the second and subsequent header lines if
2342 there were newlines in the string. This meant that an invalid header could
2343 be inserted if Exim was badly configured.
2344
2345 7. Allow an ACL "warn" statement to add header lines at the start or after all
2346 the Received: headers, as well as at the end.
2347
2348 8. Added the rcpt_4xx retry error code.
2349
2350 9. Added postmaster_mailfrom=xxx to callout verification option.
2351
235210. Added mailfrom=xxxx to the callout verification option, for verify=
2353 header_sender only.
2354
235511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2356 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2357
235812. Inserted some casts to stop certain compilers warning when using pointer
2359 differences as field lengths or precisions in printf-type calls (mostly
2360 affecting debugging statements).
2361
236213. Added optional readline() support for -be (dynamically loaded).
2363
236414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2365 same clock tick as a message's arrival, so that its received time was the
2366 same as the "first fail" time on the retry record, and that message
2367 remained on the queue past the ultimate address timeout, every queue runner
2368 would try a delivery (because it was past the ultimate address timeout) but
2369 after another failure, the ultimate address timeout, which should have then
2370 bounced the address, did not kick in. This was a "< instead of <=" error;
2371 in most cases the first failure would have been in the next clock tick
2372 after the received time, and all would be well.
2373
237415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2375 being recognized when the domain list was tested by the match_domain
2376 condition in an expansion string.
2377
237816. Added the ${str2b64: operator.
2379
238017. Exim was always calling setrlimit() to set a large limit for the number of
2381 processes, without checking whether the existing limit was already
2382 adequate. (It did check for the limit on file descriptors.) Furthermore,
2383 errors from getrlimit() and setrlimit() were being ignored. Now they are
2384 logged to the main and panic logs, but Exim does carry on, to try to do its
2385 job under whatever limits there are.
2386
238718. Imported PCRE 5.0.
2388
238919. Trivial typo in log message " temporarily refused connection" (the leading
2390 space).
2391
239220. If the log selector return_path_on_delivery was set and an address was
2393 redirected to /dev/null, the delivery process crashed because it assumed
2394 that a return path would always be set for a "successful" delivery. In this
2395 case, the whole delivery is bypassed as an optimization, and therefore no
2396 return path is set.
2397
239821. Internal re-arrangement: the function for sending a challenge and reading
2399 a response while authentication was assuming a zero-terminated challenge
2400 string. It's now changed to take a pointer and a length, to allow for
2401 binary data in such strings.
2402
240322. Added the cyrus_sasl authenticator (code supplied by MBM).
2404
240523. Exim was not respecting finduser_retries when seeking the login of the
2406 uid under which it was called; it was always trying 10 times. (The default
2407 setting of finduser_retries is zero.) Also, it was sleeping after the final
2408 failure, which is pointless.
2409
241024. Implemented tls_on_connect_ports.
2411
241225. Implemented acl_smtp_predata.
2413
241426. If the domain in control=submission is set empty, Exim assumes that the
2415 authenticated id is a complete email address when it generates From: or
2416 Sender: header lines.
2417
241827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2419 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2420 chown and chgrp in /bin and hostname in /usr/bin.
2421
242228. Exim was keeping the "process log" file open after each use, just as it
2423 does for the main log. This opens the possibility of it remaining open for
2424 long periods when the USR1 signal hits a daemon. Occasional processlog
2425 errors were reported, that could have been caused by this. Anyway, it seems
2426 much more sensible not to leave this file open at all, so that is what now
2427 happens.
2428
242929. The long-running daemon process does not normally write to the log once it
2430 has entered its main loop, and it closes the log before doing so. This is
2431 so that log files can straightforwardly be renamed and moved. However,
2432 there are a couple of unusual error situations where the daemon does write
2433 log entries, and I had neglected to close the log afterwards.
2434
243530. The text of an SMTP error response that was received during a remote
2436 delivery was being truncated at 512 bytes. This is too short for some of
2437 the long messages that one sometimes sees. I've increased the limit to
2438 1024.
2439
244031. It is now possible to make retry rules that apply only when a message has a
2441 specific sender, in particular, an empty sender.
2442
244332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2444 it possible to be selective about when SMTP synchronization is enforced.
2445
244633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2447
244832. Implemented hosts_connection_nolog.
2449
245033. Added an ACL for QUIT.
2451
245234. Setting "delay_warning=" to disable warnings was not working; it gave a
2453 syntax error.
2454
245535. Added mailbox_size and mailbox_filecount to appendfile.
2456
245736. Added control = no_multiline_responses to ACLs.
2458
245937. There was a bug in the logic of the code that waits for the clock to tick
2460 in the case where the clock went backwards by a substantial amount such
2461 that the microsecond fraction of "now" was more than the microsecond
2462 fraction of "then" (but the whole seconds number was less).
2463
246438. Added support for the libradius Radius client library this is found on
2465 FreeBSD (previously only the radiusclient library was supported).
2466
2467
2468Exim version 4.42
2469-----------------
2470
2471 1. When certain lookups returned multiple values in the form name=value, the
2472 quoting of the values was not always being done properly. Specifically:
2473 (a) If the value started with a double quote, but contained no whitespace,
2474 it was not quoted.
2475 (b) If the value contained whitespace other than a space character (i.e.
2476 tabs or newlines or carriage returns) it was not quoted.
2477 This fix has been applied to the mysql and pgsql lookups by writing a
2478 separate quoting function and calling it from the lookup code. The fix
2479 should probably also be applied to nisplus, ibase and oracle lookups, but
2480 since I cannot test any of those, I have not disturbed their existing code.
2481
2482 2. A hit in the callout cache for a specific address caused a log line with no
2483 reason for rejecting RCPT. Now it says "Previous (cached) callout
2484 verification failure".
2485
2486 3. There was an off-by-one bug in the queryprogram router. An over-long
2487 return line was truncated at 256 instead of 255 characters, thereby
2488 overflowing its buffer with the terminating zero. As well as fixing this, I
2489 have increased the buffer size to 1024 (and made a note to document this).
2490
2491 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2492 when Exim is waiting for an SMTP response from a remote server, Exim
2493 restarts its select() call on the socket, thereby resetting its timeout.
2494 This is not a problem when such interrupts are rare. Somebody set up a cron
2495 job to run exiwhat every 2 minutes, which is less than the normal select()
2496 timeout (5 or 10 minutes). This meant that the select() timeout never
2497 kicked in because it was always reset. I have fixed this by comparing the
2498 time when an interrupt arrives with the time at the start of the first call
2499 to select(). If more time than the timeout has elapsed, the interrupt is
2500 treated as a timeout.
2501
2502 5. Some internal re-factoring in preparation for the addition of Sieve
2503 extensions (by MH). In particular, the "personal" test is moved to a
2504 separate function, and given an option for scanning Cc: and Bcc: (which is
2505 not set for Exim filters).
2506
2507 6. When Exim created an email address using the login of the caller as the
2508 local part (e.g. when creating a From: or Sender: header line), it was not
2509 quoting the local part when it contained special characters such as @.
2510
2511 7. Installed new OpenBSD configuration files.
2512
2513 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2514 try to make them clearer.
2515
2516 9. Callout options, other than the timeout value, were being ignored when
2517 verifying sender addresses in header lines. For example, when using
2518
2519 verify = header_sender/callout=no_cache
2520
2521 the cache was (incorrectly) being used.
2522
252310. Added a missing instance of ${EXE} to the exim_install script; this affects
2524 only the Cygwin environment.
2525
252611. When return_path_on_delivery was set as a log selector, if different remote
2527 addresses in the same message used different return paths and parallel
2528 remote delivery occurred, the wrong values would sometimes be logged.
2529 (Whenever a remote delivery process finished, the return path value from
2530 the most recently started remote delivery process was logged.)
2531
253212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2533 lines when AUTH and/or TLS are in use. This is the "received protocol"
2534 field. Exim used to use "asmtp" for authenticated SMTP, without any
2535 indication (in the protocol name) for TLS use. Now it follows the RFC and
2536 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2537 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2538 names appear in log lines as well as in Received: header lines.
2539
254013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2541 extensions, and comparison tests, and to fix some bugs.
2542
254314. Changes to the "personal" filter test:
2544
2545 (1) The test was buggy in that it was just doing the equivalent of
2546 "contains" tests on header lines. For example, if a user's address was
2547 anne@some.where, the "personal" test would incorrectly be true for
2548
2549 To: susanne@some.where
2550
2551 This test is now done by extracting each address from the header in turn,
2552 and checking the entire address. Other tests that are part of "personal"
2553 are now done using regular expressions (for example, to check local parts
2554 of addresses in From: header lines).
2555
2556 (2) The list of non-personal local parts in From: addresses has been
2557 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2558 taken from the Sieve specification recommendations.
2559
2560 (3) If the message contains any header line starting with "List-" it is
2561 treated as non-personal.
2562
2563 (4) The test for "circular" in the Subject: header line has been removed
2564 because it now seems ill-conceived.
2565
256615. Minor typos in src/EDITME comments corrected.
2567
256816. Installed latest exipick from John Jetmore.
2569
257017. If headers_add on a router specified a text string that was too long for
2571 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2572 of string_sprintf() is now avoided.
2573
257418. $message_body_size was not set (it was always zero) when running the DATA
2575 ACL and the local_scan() function.
2576
257719. For the "mail" command in an Exim filter, no default was being set for
2578 the once_repeat time, causing a random time value to be used if "once" was
2579 specified. (If the value happened to be <= 0, no repeat happened.) The
2580 default is now 0s, meaning "never repeat". The "vacation" command was OK
2581 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2582 (I found it when inspecting the code).
2583
258420. There is now an overall timeout for performing a callout verification. It
2585 defaults to 4 times the callout timeout, which applies to individual SMTP
2586 commands during the callout. The overall timeout applies when there is more
2587 than one host that can be tried. The timeout is checked before trying the
2588 next host. This prevents very long delays if there are a large number of
2589 hosts and all are timing out (e.g. when the network connections are timing
2590 out). The value of the overall timeout can be changed by specifying an
2591 additional sub-option for "callout", called "maxwait". For example:
2592
2593 verify = sender/callout=5s,maxwait=20s
2594
259521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2596 to the end before writing, but this should make it even safer).
2597
259822. Exim was forgetting that it had advertised PIPELINING for the second and
2599 subsequent messages on an SMTP connection. It was also not resetting its
2600 memory on STARTTLS and an internal HELO.
2601
260223. When Exim logs an SMTP synchronization error within a session, it now
2603 records whether PIPELINING has been advertised or not.
2604
260524. Added 3 instances of "(long int)" casts to time_t variables that were being
2606 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2607 rather than long int.
2608
260925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2610
261126. Added the never_mail option to autoreply.
2612
2613
2614Exim version 4.41
2615-----------------
2616
2617 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2618 crash if the getsockname() call failed; this can happen if a connection is
2619 closed very soon after it is established. The problem was simply in the
2620 order in which certain operations were done, causing Exim to try to write
2621 to the SMTP stream before it had set up the file descriptor. The bug has
2622 been fixed by making things happen in the correct order.
2623
2624
2625Exim version 4.40
2626-----------------
2627
2628 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2629 before the connection was closed, thus losing the rejection response.
2630
2631 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2632 some early Solaris releases, but causes trouble in current releases where
2633 socklen_t is defined.
2634
2635 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2636 always exist.
2637
2638 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2639 configured.
2640
2641 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2642 that releasing the top of it at the end releases what was used for sub-
2643 expansions (unless the block got too big). However, discard this block if
2644 the first thing is a variable or header, so that we can use its block when
2645 it is dynamic (useful for very large $message_headers, for example).
2646
2647 6. Lookups now cache *every* query, not just the most recent. A new, separate
2648 store pool is used for this. It can be recovered when all lookup caches are
2649 flushed. Lookups now release memory at the end of their result strings.
2650 This has involved some general refactoring of the lookup sources.
2651
2652 7. Some code has been added to the store_xxx() functions to reduce the amount
2653 of flapping under certain conditions.
2654
2655 8. log_incoming_interface used to affect only the <= reception log lines. Now
2656 it causes the local interface and port to be added to several more SMTP log
2657 lines, for example "SMTP connection from", and rejection lines.
2658
2659 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2660
266110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2662
266311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2664 could be overwritten at the end of the current message (or the start of a
2665 new message if it was set in a HELO ACL). The value is now preserved for
2666 the duration of the SMTP connection.
2667
266812. If a transport had a headers_rewrite setting, and a matching header line
2669 contained an unqualified address, that address was qualified, even if it
2670 did not match any rewriting rules. The underlying bug was that the values
2671 of the flags that permit the existence of unqualified sender and recipient
2672 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2673 non-local messages, and by -bnq for local messages) were not being
2674 preserved with the message after it was received.
2675
267613. When Exim was logging an SMTP synchronization error, it could sometimes log
2677 "next input=" as part of the text comprising the host identity instead of
2678 the correct text. The code was using the same buffer for two different
2679 strings. However, depending on which order the printing function evaluated
2680 its arguments, the bug did not always show up. Under Linux, for example, my
2681 test suite worked just fine.
2682
268314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2684 doesn't work with some older versions of Perl. It has been changed to "my",
2685 which in any case is probably the better facility to use.
2686
268715. A really picky compiler found some instances of statements for creating
2688 error messages that either had too many or two few arguments for the format
2689 string.
2690
269116. The size of the buffer for calls to the DNS resolver has been increased
2692 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2693 for addresses that have a lot of PTR records. This alleviates a problem; it
2694 does not fully solve it.
2695
269617. A dnsdb lookup for PTR records that receives more data than will fit in the
2697 buffer now truncates the list and logs the incident, which is the same
2698 action as happens when Exim is looking up a host name and its aliases.
2699 Previously in this situation something unpredictable would happen;
2700 sometimes it was "internal error: store_reset failed".
2701
270218. If a server dropped the connection unexpectedly when an Exim client was
2703 using GnuTLS and trying to read a response, the client delivery process
2704 crashed while trying to generate an error log message.
2705
270619. If a "warn" verb in an ACL added multiple headers to a message in a single
2707 string, for example:
2708
2709 warn message = H1: something\nH2: something
2710
2711 the text was added as a single header line from Exim's point of view
2712 though it ended up OK in the delivered message. However, searching for the
2713 second and subsequent header lines using $h_h2: did not work. This has been
2714 fixed. Similarly, if a system filter added multiple headers in this way,
2715 the routers could not see them.
2716
271720. Expanded the error message when iplsearch is called with an invalid key to
2718 suggest using net-iplsearch in a host list.
2719
272021. When running tests using -bh, any delays imposed by "delay" modifiers in
2721 ACLs are no longer actually imposed (and a message to that effect is
2722 output).
2723
272422. If a "gecos" field in a passwd entry contained escaped characters, in
2725 particular, if it contained a \" sequence, Exim got it wrong when building
2726 a From: or a Sender: header from that name. A second bug also caused
2727 incorrect handling when an unquoted " was present following a character
2728 that needed quoting.
2729
273023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2731 was not being matched caselessly.
2732
273324. Arranged for all hyphens in the exim.8 source to be escaped with
2734 backslashes.
2735
273625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2737 properly. Recipient callout cache records were still being keyed to include
2738 the sender, even when use_sender was set false. This led to far more
2739 callouts that were necessary. The sender is no longer included in the key
2740 when use_sender is false.
2741
274226. Added "control = submission" modifier to ACLs.
2743
274427. Added the ${base62d: operator to decode base 62 numbers.
2745
274628. dnsdb lookups can now access SRV records.
2747
274829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2749 the configuration file.
2750
275130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2752 (-v) mode. This makes the output for a verbose queue run more intelligible.
2753
275431. Added a use_postmaster feature to recipient callouts.
2755
275632. Added the $body_zerocount variable, containing the number of binary zero
2757 bytes in the message body.
2758
275933. The time of last modification of the "new" subdirectory is now used as the
2760 "mailbox time last read" when there is a quota error for a maildir
2761 delivery.
2762
276334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2764
276535. Added +ignore_unknown as a special item in host lists.
2766
276736. Code for decoding IPv6 addresses in host lists is now included, even if
2768 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2769 address was recognized as an IP address, but was then not correctly decoded
2770 into binary, causing unexpected and incorrect effects when compared with
2771 another IP address.
2772
2773
2774Exim version 4.34
2775-----------------
2776
2777 1. Very minor rewording of debugging text in manualroute to say "list of
2778 hosts" instead of "hostlist".
2779
2780 2. If verify=header_syntax was set, and a header line with an unqualified
2781 address (no domain) and a large number of spaces between the end of the
2782 name and the colon was received, the reception process suffered a buffer
2783 overflow, and (when I tested it) crashed. This was caused by some obsolete
2784 code that should have been removed. The fix is to remove it!
2785
2786 3. When running in the test harness, delay a bit after writing a bounce
2787 message to get a bit more predictability in the log output.
2788
2789 4. Added a call to search_tidyup() just before forking a reception process. In
2790 theory, someone could use a lookup in the expansion of smtp_accept_max_
2791 per_host which, without the tidyup, could leave open a database connection.
2792
2793 5. Added the variables $recipient_data and $sender_data which get set from a
2794 lookup success in an ACL "recipients" or "senders" condition, or a router
2795 "senders" option, similar to $domain_data and $local_part_data.
2796
2797 6. Moved the writing of debug_print from before to after the "senders" test
2798 for routers.
2799
2800 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2801 problems for message scanning, either using a data ACL, or using
2802 local_scan() because the Received: header was not generated till after they
2803 were called (in order to set the time as the time of reception completion).
2804 I have revised the way this works. The header is now generated after the
2805 body is received, but before the ACL or local_scan() are called. After they
2806 are run, the timestamp in the header is updated.
2807
2808
2809Exim version 4.33
2810-----------------
2811
2812 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2813 before starting a queue runner without re-exec. This happened only when
2814 deliver_drop_privilege was set or when the Exim user was set to root. The
2815 effect of the bug was that timeouts during subsequent deliveries caused
2816 crashes instead of being properly handled. The handler is now left at its
2817 default (and expected) setting.
2818
2819 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2820 message, again when deliver_drop_privilege is set or Exim is run as root.
2821 The bug described in (1) was not present in this case, but the tidying up
2822 of the other signals was missing. I have made the two cases consistent.
2823
2824 3. The ignore_target_hosts setting on a manualroute router was being ignored
2825 for hosts that were looked up using the /MX notation.
2826
2827 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2828 in domain lists.
2829
2830 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2831 operated on the sender address. After changing the $sender_address to <>
2832 for the sender address verify, Exim was re-instated it as the original
2833 (before rewriting) address, but remembering that it had rewritten it, so it
2834 wasn't rewriting it again. This bug also had the effect of breaking the
2835 sender address verification caching when the sender address was rewritten.
2836
2837 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2838 This has been changed so that if the ip literal address matches
2839 ignore_target_hosts, the router declines.
2840
2841 7. Added expansion conditions match_domain, match_address, and match_local_
2842 part (NOT match_host).
2843
2844 8. The placeholder for the Received: header didn't have a length field set.
2845
2846 9. Added code to Exim itself and to exim_lock to test for a specific race
2847 condition that could lead to file corruption when using MBX delivery. The
2848 issue is with the lockfile that is created in /tmp. If this file is removed
2849 after a process has opened it but before that process has acquired a lock,
2850 there is the potential for a second process to recreate the file and also
2851 acquire a lock. This could lead to two Exim processes writing to the file
2852 at the same time. The added code performs the same test as UW imapd; it
2853 checks after acquiring the lock that its file descriptor still refers to
2854 the same named file.
2855
285610. The buffer for building added header lines was of fixed size, 8192 bytes.
2857 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2858 when Exim is built.
2859
286011. Added the smtp_active_hostname option. If used, this will typically be made
2861 to depend on the incoming interface address. Because $interface_address is
2862 not set up until the daemon has forked a reception process, error responses
2863 that can happen earlier (such as "too many connections") no longer contain
2864 a host name.
2865
286612. If an expansion in a condition on a "warn" statement fails because a lookup
2867 defers, the "warn" statement is abandoned, and the next ACL statement is
2868 processed. Previously this caused the whole ACL to be aborted.
2869
287013. Added the iplsearch lookup type.
2871
287214. Added ident_timeout as a log selector.
2873
287415. Added tls_certificate_verified as a log selector.
2875
287616. Added a global option tls_require_ciphers (compare the smtp transport
2877 option of the same name). This controls incoming TLS connections.
2878
287917. I finally figured out how to make tls_require_ciphers do a similar thing
2880 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2881 before starting the TLS session.
2882
288318. Tabs are now shown as \t in -bP output.
2884
288519. If the log selector return_path_on_delivery was set, Exim crashed when
2886 bouncing a message because it had too many Received: header lines.
2887
288820. If two routers both had headers_remove settings, and the first one included
2889 a superfluous trailing colon, the final name in the first list and the
2890 first name in the second list were incorrectly joined into one item (with a
2891 colon in the middle).
2892
2893
2894Exim version 4.32
2895-----------------
2896
2897 1. Added -C and -D options to the exinext utility, mainly to make it easier
2898 to include in the automated testing, but these could be helpful when
2899 multiple configurations are in use.
2900
2901 2. The exinext utility was not formatting the output nicely when there was
2902 an alternate port involved in the retry record key, nor when there was a
2903 message id as well (for retries that were specific to a specific message
2904 and a specific host). It was also confused by IPv6 addresses, because of
2905 the additional colons they contain. I have fixed the IPv4 problem, and
2906 patched it up to do a reasonable job for IPv6.
2907
2908 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2909 delivery, the log line now contains "pipelined" if PIPELINING was used.
2910
2911 4. An SMTP transport process used to panic and die if the bind() call to set
2912 an explicit outgoing interface failed. This has been changed; it is now
2913 treated in the same way as a connect() failure.
2914
2915 5. A reference to $sender_host_name in the part of a conditional expansion
2916 that was being skipped was still causing a DNS lookup. This no longer
2917 occurs.
2918
2919 6. The def: expansion condition was not recognizing references to header lines
2920 that used bh_ and bheader_.
2921
2922 7. Added the _cache feature to named lists.
2923
2924 8. The code for checking quota_filecount in the appendfile transport was
2925 allowing one more file than it should have been.
2926
2927 9. For compatibility with Sendmail, the command line option
2928
2929 -prval:sval
2930
2931 is equivalent to
2932
2933 -oMr rval -oMs sval
2934
2935 and sets the incoming protocol and host name (for trusted callers). The
2936 host name and its colon can be omitted when only the protocol is to be set.
2937 Note the Exim already has two private options, -pd and -ps, that refer to
2938 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2939 "s", but I don't think that's a major issue.
2940
294110. A number of refactoring changes to the code, none of which should affect
2942 Exim's behaviour:
2943
2944 (a) The number of logging options was getting close to filling up the
2945 32-bit word that was used as a bit map. I have split them into two classes:
2946 those that are passed in the argument to log_write(), and those that are
2947 only ever tested independently outside of that function. These are now in
2948 separate 32-bit words, so there is plenty of room for expansion again.
2949 There is no change in the user interface or the logging behaviour.
2950
2951 (b) When building, for example, log lines, the code previously used a
2952 macro that called string_cat() twice, in order to add two strings. This is
2953 not really sufficiently general. Furthermore, there was one instance where
2954 it was actually wrong because one of the argument was used twice, and in
2955 one call a function was used. (As it happened, calling the function twice
2956 did not affect the overall behaviour.) The macro has been replaced by a
2957 function that can join an arbitrary number of extra strings onto a growing
2958 string.
2959
2960 (c) The code for expansion conditions now uses a table and a binary chop
2961 instead of a serial search (which was left over from when there were very
2962 few conditions). Also, it now recognizes conditions like "pam" even when
2963 the relevant support is not compiled in: a suitably worded error message is
2964 given if an attempt is made to use such a condition.
2965
296611. Added ${time_interval:xxxxx}.
2967
296812. A bug was causing one of the ddress fields not to be passed back correctly
2969 from remote delivery subprocesses. The field in question was not being
2970 subsequently used, so this caused to problems in practice.
2971
297213. Added new log selectors queue_time and deliver_time.
2973
297414. Might have fixed a bug in maildirsizefile handling that threw up
2975 "unexpected character" debug warnings, and recalculated the data
2976 unnecessarily. In any case, I expanded the warning message to give more
2977 information.
2978
297915. Added the message "Restricted characters in address" to the statements in
2980 the default ACL that block characters like @ and % in local parts.
2981
298216. Change 71 for release 4.31 proved to be much less benign that I imagined.
2983 Three changes have been made:
2984
2985 (a) There was a serious bug; a negative response to MAIL caused the whole
2986 recipient domain to be cached as invalid, thereby blocking all messages
2987 to all local parts at the same domain, from all senders. This bug has
2988 been fixed. The domain is no longer cached after a negative response to
2989 MAIL if the sender used is not empty.
2990
2991 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2992 been restored.
2993
2994 (c) A new callout option, "use_sender" has been added for people who want
2995 the modified behaviour.
2996
2997
2998Exim version 4.31
2999-----------------
3000
3001 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3002 Larry Rosenman.
3003
3004 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3005 indeed breaks things for older releases.
3006
3007 3. Added additional logging to the case where there is a problem reading data
3008 from a filter that is running in a subprocess using a pipe, in order to
3009 try to track down a specific problem.
3010
3011 4. Testing facility fudge: when running in the test harness and attempting
3012 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3013 getting "No route to host". Convert this to a timeout.
3014
3015 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3016 warning.
3017
3018 6. Some OS don't have socklen_t but use size_t instead. This affects the
3019 fifth argument of getsockopt() amongst other things. This is now
3020 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3021 can be set for individual OS. I have set it for SunOS5, OSF1, and
3022 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3023 some earlier ones do not.
3024
3025 7. Change 4.30/15 was not doing the test caselessly.
3026
3027 8. The standard form for an IPv6 address literal was being rejected by address
3028 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3029 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3030 this, as well as the form without the "IPv6" on the front (but only when
3031 address literals are enabled, of course).
3032
3033 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3034
303510. Exim crashed if a message with an empty sender address specified by -f
3036 encountered a router with an errors_to setting. This could be provoked only
3037 by a command such as
3038
3039 exim -f "" ...
3040
3041 where an empty string was supplied; "<>" did not hit this bug.
3042
304311. Installed PCRE release 4.5.
3044
304512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3046 remained set. It is now erased.
3047
304813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3049 times from message ids (which are base 36 rather than the normal 62).
3050
305114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3052 were being counted as actual protocol errors, and logged if the log
3053 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3054 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3055 and DATA following a set of rejected RCPTs do not count as protocol errors.
3056 In other words, Exim assumes they were pipelined, though this may not
3057 actually be the case. Of course, in all cases the client gets an
3058 appropriate error code.
3059
306015. If a lookup fails in an ACL condition, a message about the failure may
3061 be available; it is used if testing the ACL cannot continue, because most
3062 such messages specify what the cause of the deferral is. However, some
3063 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3064 that caused an old message to be retained and used if a later statement
3065 caused a defer, replacing the real cause of the deferral.
3066
306716. If an IP address had so many PTR records that the DNS lookup buffer
3068 was not large enough to hold them, Exim could crash while trying to process
3069 the truncated data. It now detects and logs this case.
3070
307117. Further to 4.21/58, another change has been made: if (and only if) the
3072 first line of a message (the first header line) ends with CRLF, a bare LF
3073 in a subsequent header line has a space inserted after it, so as not to
3074 terminate the header.
3075
307618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3077 unnecessarily, used atoi() instead of strtol(), and didn't check the
3078 termination when getting file sizes from file names by regex.
3079
308019. Completely re-implemented the support for maildirsize files, in the light
3081 of a number of problems with the previous contributed implementation
3082 (4.30/29). In particular:
3083
3084 . If the quota is zero, the maildirsize file is maintained, but no quota is
3085 imposed.
3086
3087 . If the maildir directory does not exist, it is created before any attempt
3088 to write a maildirsize file.
3089
3090 . The quota value in the file is just a cache; if the quota is changed in
3091 the transport, the new value overrides.
3092
3093 . A regular expression is available for excluding directories from the
3094 count.
3095
309620. The autoreply transport checks the characters in options that define the
3097 message's headers; it allows continued headers, but it was checking with
3098 isspace() after an embedded newline instead of explicitly looking for a
3099 space or a tab.
3100
310121. If all the "regular" hosts to which an address was routed had passed their
3102 expiry times, and had not reached their retry times, the address was
3103 bounced, even if fallback hosts were defined. Now Exim should go on to try
3104 the fallback hosts.
3105
310622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3107 equivalent code in the SMTP transport. Some hosts send humungous responses
3108 to HELO/EHLO, more than 1024 it seems.
3109
311023. Refactoring: code in filter.c used (void *) for "any old type" but this
3111 gives compiler warnings in some environments. I've now done it "properly",
3112 using a union.
3113
311424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3115 (because of problems with the built-in one) was declared to return uschar *
3116 instead of char *, causing compiler failure.
3117
311825. Fixed a file descriptor leak when processing alias/forward files.
3119
312026. Fixed a minor format string issue in dbfn.c.
3121
312227. Typo in exim.c: ("dmbnz" for "dbmnz").
3123
312428. If a filter file refered to $h_xxx or $message_headers, and the headers
3125 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3126 become corrupted.
3127
312829. When a sender address is verified, it is cached, to save repeating the test
3129 when there is more than one recipient in a message. However, when the
3130 verification involves a callout, it is possible for different callout
3131 options to be set for different recipients. It is too complicated to keep
3132 track of this in the cache, so now Exim always runs a verification when a
3133 callout is required, relying on the callout cache for the optimization.
3134 The overhead is duplication of the address routing, but this should not be
3135 too great.
3136
313730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3138 to be verified with callout=postmaster, and the main callout worked but the
3139 postmaster check failed, the verification correctly failed. However, if a
3140 subsequent RCPT command asked for sender verification *without* the
3141 postmaster check, incorrect caching caused this verification also to fail,
3142 incorrectly.
3143
314431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3145 it was not caching the DNS options (qualify_single, search_parents) that
3146 were used when the lookup failed. A subsequent lookup with different
3147 options therefore always gave the same answer, though there were cases
3148 where it should not have. (Example: a "domains = !$mx_any" option on a
3149 dnslookup router: the "domains" option is always processed without any
3150 widening, but the router might have qualify_single set.) Now Exim uses the
3151 cached value only when the same options are set.
3152
315332. Added John Jetmore's "exipick" utility to the distribution.
3154
315533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3156 than a timeout (e.g. a certificate is required, and is not provided), an
3157 Exim server now closes the connection immediately. Previously it waited for
3158 the client to close - but if the client is SSL, it seems that they each
3159 wait for each other, leading to a delay before one of them times out.
3160
316134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3162 maintained 0.8.x compatibility because I don't think many are using it, and
3163 it is clearly obsolete.
3164
316535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3166 transport.
3167
316836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3169 client certificate was expired. A simple patch fixes this, though I don't
3170 understand the full logic of why the verify callback is called multiple
3171 times.
3172
317337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3174 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3175 which causes problems with some clients (such as the Certicom SSL Plus
3176 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3177 disables the coutermeasure allowing Eudora to connect."
3178
317938. Exim was not checking that a write() to a log file succeeded. This could
3180 lead to Bad Things if a log got too big, in particular if it hit a file
3181 size limit. Exim now panics and dies if it cannot write to a log file, just
3182 as it does if it cannot open a log file.
3183
318439. Modified OS/Makefile-Linux so that it now contains
3185
3186 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3187
3188 The two -D definitions ensure that Exim is compiled with large file
3189 support, which makes it possible to handle log files that are bigger than
3190 2^31.
3191
319240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3193 instance) a domain was checked against a named list that involved a lookup,
3194 causing $domain_data to be set, then another domain was checked against the
3195 same list, then the first domain was re-checked, the value of $domain_data
3196 after the final check could be wrong. In particular, if the second check
3197 failed, it could be set empty. This bug probably also applied to
3198 $localpart_data.
3199
320041. The strip_trailing_dot option was not being applied to the address given
3201 with the -f command-line option.
3202
320342. The code for reading a message's header from the spool was incrementing
3204 $received_count, but never initializing it. This meant that the value was
3205 incorrect (doubled) while delivering a message in the same process in which
3206 it was received. In the most common configuration of Exim, this never
3207 happens - a fresh exec is done - but it can happen when
3208 deliver_drop_privilege is set.
3209
321043. When Exim logs an SMTP synchronization error - client data sent too soon -
3211 it now includes up to 150 characters of the unexpected data in the log
3212 line.
3213
321444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3215 and building data strings. The size of both of these buffers was 10 000
3216 bytes - far larger than anybody would *ever* want, thought I. Needless to
3217 say, somebody hit the limit. I have increased the maximum line length to
3218 20 000 and the maximum data length of concatenated lines to 100 000. I have
3219 also fixed two bugs, because there was no checking on these buffers. Tsk,
3220 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3221 buffer is too small.
3222
322345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3224 lsearch lookups. Now it does.
3225
322646. When parsing a route_list item in a manualroute router, a fixed-length
3227 buffer was used for the list of hosts. I made this 1024 bytes long,
3228 thinking that nobody would ever have a list of hosts that long. Wrong.
3229 Somebody had a whole pile of complicated expansion conditions, and the
3230 string was silently truncated, leading to an expansion error. It turns out
3231 that it is easier to change to an unlimited length (owing to other changes
3232 that have happened since this code was originally written) than to build
3233 structure for giving a limitation error. The length of the item that
3234 expands into the list of hosts is now unlimited.
3235
323647. The lsearch lookup could not handle data where the length of text line was
3237 more than 4095 characters. Such lines were truncated, leading to shortened
3238 data being returned. It should now handle lines of any length.
3239
324048. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3241 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3242 ACL").
3243
324449. Cosmetic tidy to scripts like exicyclog that are generated by globally
3245 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3246 no longer happens in comment lines. A list of replacements is now placed
3247 at the head of all of the source files, except those whose only change is
3248 to replace PERL_COMMAND in the very first #! line.
3249
325050. Replaced the slow insertion sort in queue.c, for sorting the list of
3251 messages on the queue, with a bottom-up merge sort, using code contributed
3252 by Michael Haardt. This should make operations like -bp somewhat faster on
3253 large queues. It won't affect queue runners, except when queue_run_in_order
3254 is set.
3255
325651. Installed eximstats 1.31 in the distribution.
3257
325852. Added support for SRV lookups to the dnslookup router.
3259
326053. If an ACL referred to $message_body or $message_body_end, the value was not
3261 reset for any messages that followed in the same SMTP session.
3262
326354. The store-handling optimization for building very long strings was not
3264 differentiating between the different store pools. I don't think this
3265 actually made any difference in practice, but I've tidied it.
3266
326755. While running the routers to verify a sender address, $sender_address
3268 was still set to the sender address. This is wrong, because when routing to
3269 send a bounce to the sender, it would be empty. Therefore, I have changed
3270 it so that, while verifying a sender address, $sender_address is set to <>.
3271 (There is no change to what happens when verifying a recipient address.)
3272
327356. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3274 target A or AAAA records (if not already returned) without resetting the
3275 qualify_single or search_parents options of the DNS resolver. These are
3276 inappropriate in this case because the targets of MX and SRV records must
3277 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3278 target that, when qualified, matched something in the local domain. These
3279 two options are now turned off when doing these lookups.
3280
328157. It seems that at least some releases of Reiserfs (which does not have the
3282 concept of a fixed number of inodes) returns zero and not -1 for the
3283 number of available inodes. This interacted badly with check_spool_inodes,
3284 which assumed that -1 was the "no such thing" setting. What I have done is
3285 to check that the total number of inodes is greater than zero before doing
3286 the test of how many are available.
3287
328858. When a "warn" ACL statement has a log_message modifier, the message is
3289 remembered, and not repeated. This is to avoid a lot of repetition when a
3290 message has many recipients that cause the same warning to be written.
3291 Howewer, Exim was preserving the list of already written lines for an
3292 entire SMTP session, which doesn't seem right. The memory is now reset if a
3293 new message is started.
3294
329559. The "rewrite" debugging flag was not showing the result of rewriting in the
3296 debugging output unless log_rewrite was also set.
3297
329860. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3299 of (int)(handle) when we know that handle contains (void *)(-1).
3300
330161. The Exim daemon panic-logs an error return when it closes the incoming
3302 connection. However "connection reset by peer" seems to be common, and
3303 isn't really an error worthy of noting specially, so that particular error
3304 is no long logged.
3305
330662. When Exim is trying to find all the local interfaces, it used to panic and
3307 die if the ioctl to get the interface flags failed. However, it seems that
3308 on at least one OS (Solaris 9) it is possible to have an interface that is
3309 included in the list of interfaces, but for which you get a failure error
3310 for this call. This happens when the interface is not "plumbed" into a
3311 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3312 failure of the "get flags" call assumes that the interface is down.
3313
331463. Added a ${eval10: operator, which assumes all numbers are decimal. This
3315 makes life easier for people who are doing arithmetic on fields extracted
3316 from dates, where you often get leading zeros that should not be
3317 interpreted as octal.
3318
331964. Added qualify_domain to the redirect router, to override the global
3320 setting.
3321
332265. If a pathologically long header line contained very many addresses (the
3323 report of this problem mentioned 10 000) and each of them was rewritten,
3324 Exim could use up a very large amount of memory. (It kept on making new
3325 copies of the header line as it rewrote, and never released the old ones.)
3326 At the expense of a bit more processing, the header rewriting function has
3327 been changed so that it no longer eats memory in this way.
3328
332966. The generation of the Received: header has been moved from the time that a
3330 message starts to be received, to the time that it finishes. The timestamp
3331 in the Received: header should now be very close to that of the <= log
3332 line. There are two side-effects of this change:
3333
3334 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3335 logged header lines no longer include the local Received: line, because
3336 it has not yet been created. The same applies to a copy of the message
3337 that is returned to a non-SMTP sender when a message is rejected.
3338
3339 (b) When a filter file is tested using -bf, no additional Received: header
3340 is added to the test message. After some thought, I decided that this
3341 is a bug fix.
3342
3343 This change does not affect the value of $received_for. It is still set
3344 after address rewriting, but before local_scan() is called.
3345
334667. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3347
334868. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3349 gave an unhelpful panic error message, and a defer error. I have managed to
3350 change this behaviour so that it now rejects any supplied certificate,
3351 which seems right, as the list of acceptable certificates is empty.
3352
335369. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3354 gave an unhelpful defer error. I have not managed to make this reject any
3355 supplied certificates, but the error message it gives is "no certificate
3356 supplied", which is not helpful.
3357
335870. exigrep's output now also includes lines that are not associated with any
3359 message, but which match the given pattern. Implemented by a patch from
3360 Martin Sluka, which also tidied up the Perl a bit.
3361
336271. Recipient callout verification, like sender verification, was using <> in
3363 the MAIL FROM command. This isn't really the right thing, since the actual
3364 sender may affect whether the remote host accepts the recipient or not. I
3365 have changed it to use the actual sender in the callout; this means that
3366 the cache record is now keyed on a recipient/sender pair, not just the
3367 recipient address. There doesn't seem to be a real danger of callout loops,
3368 since a callout by the remote host to check the sender would use <>.
3369 [SEE ABOVE: changed after hitting problems.]
3370
337172. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3372 temporary errors. However, in the case of such a code being given after
3373 the end of a data transmission (i.e. after ".") Exim was failing to write
3374 a retry record for the message. (Yes, there was some broken host that was
3375 actually sending 8xx at this point.)
3376
337773. An unknown lookup type in a host list could cause Exim to panic-die when
3378 the list was checked. (An example that provoked this was putting <; in the
3379 middle of a list instead of at the start.) If this happened during a DATA
3380 ACL check, a -D file could be left lying around. This kind of configuration
3381 error no longer causes Exim to die; instead it causes a defer errror. The
3382 incident is still logged to the main and panic logs.
3383
338474. Buglet left over from Exim 3 conversion. The message "too many messages
3385 in one connection" was written to the rejectlog but not the mainlog, except
3386 when address rewriting (yes!) was being logged.
3387
338875. Added write_rejectlog option.
3389
339076. When a system filter was run not as root (that is, when system_filter_user
3391 was set), the values of the $n variables were not being returned to the
3392 main process; thus, they were not subsequently available in the $sn
3393 variables.
3394
339577. Added +return_path_on_delivery log selector.
3396
339778. A connection timeout was being treated differently from recipients deferred
3398 when testing hosts_max_try with a message that was older than the host's
3399 retry timeout. (The host should not be counted, thus allowing all hosts to
3400 be tried at least once before bouncing.) This may have been the cause of an
3401 occasionally reported bug whereby a message would remain on the queue
3402 longer than the retry timeout, but would be bounced if a delivery was
3403 forced. I say "may" because I never totally pinned down the problem;
3404 setting up timeout/retry tests is difficult. See also the next item.
3405
340679. The ultimate address timeout was not being applied to errors that involved
3407 a combination of host plus message (for example, a timeout on a MAIL
3408 command). When an address resolved to a number of possible hosts, and they
3409 were not all tried for each delivery (e.g. because of hosts_max_try), a
3410 message could remain on the queue longer than the retry timeout.
3411
341280. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3413 Haardt.
3414
341581. Fixed an obscure SMTP outgoing bug which required at least the following
3416 conditions: (a) there was another message waiting for the same server;
3417 (b) the server returned 5xx to all RCPT commands in the first message so
3418 that the message was not completed; (c) the server dropped the connection
3419 or gave a negative response to the RSET that Exim sends to abort the
3420 transaction. The observed case was a dropped connection after DATA that had
3421 been sent in pipelining mode. That is, the server had advertised PIPELINING
3422 but was not implementing it correctly. The effect of the bug was incorrect
3423 behaviour, such as trying another host, and this could lead to a crash.
3424
3425
3426Exim version 4.30
3427-----------------
3428
3429 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3430 and daemon.c were passed as pointers to ints; they should have been
3431 pointers to socklen_t variables (which are typically unsigned ints).
3432
3433 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3434 fixed.
3435
3436 3. Fixed a really odd bug that affected only the testing scheme; patching a
3437 certain fixed string in the binary changed the value of another string that
3438 happened to be identical to the end of the original first string.
3439
3440 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3441 name", it returns that address as the IP address. On some operating
3442 systems (e.g. Solaris), it also passes back the IP address string as the
3443 "host name". However, on others (e.g. Linux), it passes back an empty
3444 string. Exim wasn't checking for this, and was changing the host name to an
3445 empty string, assuming it had been canonicized.
3446
3447 5. Although rare, it is permitted to have more than one PTR record for a given
3448 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3449 all the names associated with an address, because they do in Solaris.
3450 However, it seems that they do not in Linux for data that comes from the
3451 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3452 I found this out when I moved to a new Linux workstation and tried to run
3453 the Exim test suite.
3454
3455 To get round this problem I have changed the code so that it now does its
3456 own call to the DNS to look up PTR records when searching for a host name.
3457 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3458 addresses that are only in /etc/hosts are still found.
3459
3460 This behaviour is, however, controlled by an option called host_lookup_
3461 order, which defaults to "bydns:byaddr". If people want to use the other
3462 order, or indeed, just use one or the other means of lookup, they can
3463 specify it in this variable.
3464
3465 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3466 some operating systems, this comes back from gethostbyaddr() as an empty
3467 string, and this is what Exim used to test for. However, it seems that in
3468 other systems, "." is yielded. Exim now tests for this case too.
3469
3470 7. The values of check_spool_space and check_log_space are now held internally
3471 as a number of kilobytes instead of an absolute number of bytes. If a
3472 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3473 kilobyte. This means that much larger values can be stored.
3474
3475 8. Exim monitor: an attempt to get the action menu when not actually pointing
3476 at a message produces an empty menu entitled "No message selected". This
3477 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3478 no entries in it ("Shell widget menu has zero width and/or height"). So I
3479 have added a single, blank menu entry in this case.
3480
3481 9. Added ${quote_local_part.
3482
348310. MIME decoding is now applied to the contents of Subject: header lines when
3484 they are logged.
3485
348611. Now that a reference to $sender_host_address automatically causes a reverse
3487 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3488 host lookup before query-style lookups in lists that might use this
3489 variable. This has therefore been abolished, and the "net-" prefix is no
3490 longer necessary for query-style lookups.
3491
349212. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3493 have been a typo for LFLAGS, so it has been changed.
3494
349513. The install script calls Exim with "-C /dev/null" in order to find the
3496 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3497 to be output. Howeve, since Exim outputs its version number before the
3498 error, it didn't break the script. It just looked ugly. I fixed this by
3499 always allowing "-C /dev/null" if the caller is root.
3500
350114. Ignore overlarge ACL variable number when reading spool file - insurance
3502 against a later release with more variables having written the file.
3503
350415. The standard form for an IPv6 address literal was being rejected by EHLO.
3505 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3506 this, as well as the form without the "IPv6" on the front.
3507
350816. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3509 OS/Makefile-Darwin file.
3510
351117. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3512 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3513
351418. After change 4.21/52, "%ld" was used to format the contents of the $inode
3515 variable. However, some OS use ints for inodes. I've added cast to long int
3516 to get rid of the compiler warning.
3517
351819. I had forgotten to lock out "/../" in configuration file names when
3519 ALT_CONFIG_PREFIX was set.
3520
352120. Routers used for verification do not need to specify transports. However,
3522 if such a router generated a host list, and callout was configured, Exim
3523 crashed, because it could not find a port number from the (non-existent)
3524 transport. It now assumes port 25 in this circumstance.
3525
352621. Added the -t option to exigrep.
3527
352822. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3529 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3530 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3531 them is set, LOOKUP_LSEARCH is forced.
3532
353323. "exim -bV" now outputs a list of lookups that are included in the binary.
3534
353524. Added sender and host information to the "rejected by local_scan()" log
3536 line; previously there was no indication of these.
3537
353825. Added .include_if_exists.
3539
354026. Change 3.952/11 added an explicit directory sync on top of a file sync for
3541 Linux. It turns out that not all file systems support this. Apparently some
3542 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3543 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3544 not supported on the file descriptor, is now ignored when Exim is trying to
3545 sync a directory. This applies only to Linux.
3546
354727. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3548
354928. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3550 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3551 this.
3552
355329. Added support for maildirsize files from supplied patch (modified a bit).
3554
355530. The use of :fail: followed by an empty string could lead Exim to respond to
3556 sender verification failures with (e.g.):
3557
3558 550 Verification failed for <xxx>
3559 550 Sender verify failed
3560
3561 where the first response line was missing the '-' that indicates it is not
3562 the final line of the response.
3563
356431. The loop for finding the name of the user that called Exim had a hardwired
3565 limit of 10; it now uses the value of finduser_retries, which is used for
3566 all other user lookups.
3567
356832. Added $received_count variable, available in data and not_smtp ACLs, and at
3569 delivery time.
3570
357133. Exim was neglecting to zero errno before one call of strtol() when
3572 expanding a string and expecting an integer value. On some systems this
3573 resulted in spurious "integer overflow" errors. Also, it was casting the
3574 result into an int without checking.
3575
357634. Testing for a connection timeout using "timeout_connect" in the retry rules
3577 did not work. The code looks as if it has *never* worked, though it appears
3578 to have been documented since at least releast 1.62. I have made it work.
3579
358035. The "timeout_DNS" error in retry rules, also documented since at least
3581 1.62, also never worked. As it isn't clear exactly what this means, and
3582 clearly it isn't a major issue, I have abolished the feature by treating it
3583 as "timeout", and writing a warning to the main and panic logs.
3584
358536. The display of retry rules for -brt wasn't always showing the error code
3586 correctly.
3587
358837. Added new error conditions to retry rules: timeout_A, timeout_MX,
3589 timeout_connect_A, timeout_connect_MX.
3590
359138. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3592 to the empty sender.
3593
359439. The daemon was not analysing the content of -oX till after it had closed
3595 stderr and disconnected from the controlling terminal. This meant that any
3596 syntax errors were only noted on the panic log, and the return code from
3597 the command was 0. By re-arranging the code a little, I've made the
3598 decoding happen first, so such errors now appear on stderr, and the return
3599 code is 1. However, the actual setting up of the sockets still happens in
3600 the disconnected process, so errors there are still only recorded on the
3601 panic log.
3602
360340. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3604 connections (as happens on some IP stacks) was logged at start up time as
3605 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3606 it from "IPv6 and IPv4", which means that two separate sockets are being
3607 used.
3608
360941. The debug output for gethostbyname2() or getipnodebyname() failures now
3610 says whether AF_INET or AF_INET6 was passed as an argument.
3611
3612