2005-07-26 V1.44 Steve Campbell
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
4e88a19f 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.434 2006/11/14 16:40:36 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
TF
6Exim version 4.64
7-----------------
aa41d2de 8
21d74bd9
TK
9TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
10 leftover -K file (the existence of which was triggered by #402).
11 While we were at it, introduced process PID as part of the -K
12 filename. This should rule out race conditions when creating
13 these files.
14
15TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
16 processing considerably. Previous code took too long for large mails,
17 triggering a timeout which in turn triggers #401.
18
19TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
20 in the DK code in transports.c. sendfile() is not really portable,
21 hence the _LINUX specificness.
944e9e9c
TF
22
23TF/01 In the add_headers option to the mail command in an Exim filter,
24 there was a bug that Exim would claim a syntax error in any
25 header after the first one which had an odd number of characters
26 in the field name.
27
2b1c6e3a
PH
28PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
29 callout verification, Exim cached a "reject" for the entire domain. This
30 is correct for most verifications, but it is not correct for a recipient
31 verification with use_sender or use_postmaster set, because in that case
32 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
33 case of MAIL FROM:<> rejection from other early rejections (e.g.
34 rejection of HELO). When verifying a recipient using a non-null MAIL
35 address, the cache is ignored if it shows MAIL FROM:<> rejection.
36 Whatever the result of the callout, the value of the domain cache is
37 left unchanged (for any other kind of callout, getting as far as trying
38 RCPT means that the domain itself is ok).
39
1f872c80
PH
40PH/02 Tidied a number of unused variable and signed/unsigned warnings that
41 gcc 4.1.1 threw up.
42
43PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
44 manifest itself as EPIPE rather than ECONNECT. When tidying away a
45 session, the daemon ignores ECONNECT errors and logs others; it now
46 ignores EPIPE as well.
47
d203e649
PH
48PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
49 (quoted-printable decoding).
50
cc2ed8f7 51PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 52 later the small subsequent patch to fix an introduced bug.
f951fd57 53
ddfcd446
PH
54PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
55
d45b1de8
PH
56PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
57
58PH/08 An error is now given if message_size_limit is specified negative.
59
38a0a95f 60PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 61 to be given (somewhat) arbitrary names.
38a0a95f 62
a2405d83
JJ
63JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
64 in 4.64-PH/09.
65
66JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
67 miscellaneous code fixes
68
6ea85e9a
PH
69PH/10 Added the log_reject_target ACL modifier to specify where to log
70 rejections.
71
26da7e20
PH
72PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
73 hostname. This is wrong, because it relates to the incoming message (and
74 probably the interface on which it is arriving) and not to the outgoing
75 callout (which could be using a different interface). This has been
76 changed to use the value of the helo_data option from the smtp transport
77 instead - this is what is used when a message is actually being sent. If
78 there is no remote transport (possible with a router that sets up host
79 addresses), $smtp_active_hostname is used.
6ea85e9a 80
14aa5a05 81PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 82 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
83 (a) The code assumed that strncpy() returns a negative number on buffer
84 overflow, which isn't the case. Replaced with Exim's string_format()
85 function.
86 (b) There were several signed/unsigned issues. I just did the minimum
87 hacking in of casts. There is scope for a larger refactoring.
88 (c) The code used strcasecmp() which is not a standard C function.
89 Replaced with Exim's strcmpic() function.
90 (d) The code set only $1; it now sets $auth1 as well.
91 (e) A simple test gave the error "authentication client didn't specify
92 service in request". It would seem that Dovecot has changed its
93 interface. Fortunately there's a specification; I followed it and
94 changed what the client sends and it appears to be working now.
95
ff75a1f7
PH
96PH/13 Added $message_headers_raw to provide the headers without RFC 2047
97 decoding.
98
e6f6568e
PH
99PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
100 address A is aliased to B and C, where B exists and C does not. Without
101 -v the output is "A verified" because verification stops after a
102 successful redirection if more than one address is generated. However,
103 with -v the child addresses are also verified. Exim was outputting "A
104 failed to verify" and then showing the successful verification for C,
105 with its parentage. It now outputs "B failed to verify", showing B's
106 parentage before showing the successful verification of C.
107
d6f6e0dc
PH
108PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
109 look up a TXT record in a specific list after matching in a combined
110 list.
111
322050c2
PH
112PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
113 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
114 they consult the DNS. I had assumed they would set it the way they
115 wanted; and indeed my experiments on Linux seem to show that in some
116 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
117 To be on the safe side, however, I have now made the interface to
118 host_find_byname() similar to host_find_bydns(), with an argument
119 containing the DNS resolver options. The host_find_byname() function now
120 sets these options at its start, just as host_find_bydns() does. The smtp
121 transport options dns_qualify_single and dns_search_parents are passed to
122 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
123 of host_find_byname() use the default settings of RES_DEFNAMES
124 (qualify_single) but not RES_DNSRCH (search_parents).
125
08955dd3
PH
126PH/17 Applied (a modified version of) Nico Erfurth's patch to make
127 spool_read_header() do less string testing, by means of a preliminary
128 switch on the second character of optional "-foo" lines. (This is
129 overdue, caused by the large number of possibilities that now exist.
130 Originally there were few.) While I was there, I also converted the
131 str(n)cmp tests so they don't re-test the leading "-" and the first
132 character, in the hope this might squeeze out yet more improvement.
133
1eccaa59
PH
134PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
135 flag allowing group syntax was set by the header_syntax check but not
136 turned off, possible causing trouble later; (2) The flag was not being
137 set at all for the header_verify test, causing "group"-style headers to
138 be rejected. I have now set it in this case, and also caused header_
139 verify to ignore an empty address taken from a group. While doing this, I
140 came across some other cases where the code for allowing group syntax
141 while scanning a header line wasn't quite right (mostly, not resetting
142 the flag correctly in the right place). These bugs could have caused
143 trouble for malformed header lines. I hope it is now all correct.
144
602e59e5
PH
145PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
146 with the "reply" argument non-NULL. The code, however (which originally
147 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
148 but it didn't always do it. This confused somebody who was copying the
149 code for some other use. I have removed all the tests.
150
411ef850
PH
151PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
152 feature that was used to support insecure browsers during the U.S. crypto
153 embargo. It requires special client support, and Exim is probably the
154 only MTA that supported it -- and would never use it because real RSA is
155 always available. This code has been removed, because it had the bad
156 effect of slowing Exim down by computing (never used) parameters for the
157 RSA_EXPORT functionality.
158
7befa435
PH
159PH/21 On the advice of Timo Sirainen, added a check to the dovecot
160 authenticator to fail if there's a tab character in the incoming data
161 (there should never be unless someone is messing about, as it's supposed
162 to be base64-encoded). Also added, on Timo's advice, the "secured" option
163 if the connection is using TLS or if the remote IP is the same as the
164 local IP, and the "valid-client-cert option" if a client certificate has
165 been verified.
166
48da4259 167PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
168 authenticators. This can be used for authorization after authentication
169 succeeds. (In the case of plaintext, it servers for both authentication
170 and authorization.)
171
48da4259
PH
172PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
173 if any retry times were supplied.
174
d1d5595c
PH
175PH/24 Exim crashed if verify=helo was activated during an incoming -bs
176 connection, where there is no client IP address to check. In this
177 situation, the verify now always succeeds.
178
0ef732d9
PH
179PH/25 Applied John Jetmore's -Mset patch.
180
328895cc
PH
181PH/26 Added -bem to be like -Mset, but loading a message from a file.
182
fd700877
PH
183PH/27 In a string expansion for a processed (not raw) header when multiple
184 headers of the same name were present, leading whitespace was being
185 removed from all of them, but trailing whitespace was being removed only
186 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
187 before concatenation. Completely empty headers in a concatenation (as
188 before) are ignored.
fd700877 189
8dce1a6f
PH
190PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
191 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
192
17af4a17
PH
193PH/29 [Removed. This was a change that I later backed out, and forgot to
194 correct the ChangeLog entry (that I had efficiently created) before
195 committing the later change.]
f6c332bd
PH
196
197PH/30 Exim was sometimes attempting to deliver messages that had suffered
198 address errors (4xx response to RCPT) over the same connection as other
199 messages routed to the same hosts. Such deliveries are always "forced",
200 so retry times are not inspected. This resulted in far too many retries
201 for the affected addresses. The effect occurred only when there were more
202 hosts than the hosts_max_try setting in the smtp transport when it had
203 the 4xx errors. Those hosts that it had tried were not added to the list
204 of hosts for which the message was waiting, so if all were tried, there
205 was no problem. Two fixes have been applied:
206
207 (i) If there are any address or message errors in an SMTP delivery, none
208 of the hosts (tried or untried) are now added to the list of hosts
209 for which the message is waiting, so the message should not be a
210 candidate for sending over the same connection that was used for a
211 successful delivery of some other message. This seems entirely
212 reasonable: after all the message is NOT "waiting for some host".
213 This is so "obvious" that I'm not sure why it wasn't done
214 previously. Hope I haven't missed anything, but it can't do any
215 harm, as the worst effect is to miss an optimization.
216
217 (ii) If, despite (i), such a delivery is accidentally attempted, the
218 routing retry time is respected, so at least it doesn't keep
219 hammering the server.
220
c1114884
PH
221PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
222 in ${readsocket because some servers need this prod.
223
7a0743eb
PH
224PH/32 Added some extra debug output when updating a wait-xxx database.
225
0d85fa3f
PH
226PH/33 The hint "could be header name not terminated by colon", which has been
227 given for certain expansion errors for a long time, was not being given
228 for the ${if def:h_colon_omitted{... case.
229
1bf43b78
PH
230PH/34 The spec says: "With one important exception, whenever a domain list is
231 being scanned, $domain contains the subject domain." There was at least
232 one case where this was not true.
233
520de300
PH
234PH/35 The error "getsockname() failed: connection reset by peer" was being
235 written to the panic log as well as the main log, but it isn't really
236 panic-worthy as it just means the connection died rather early on. I have
237 removed the panic log writing for the ECONNRESET error when getsockname()
238 fails.
239
48c7f9e2
PH
240PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
241 runs only) independently of the message's sender address. This meant
242 that, if the 4xx error was in fact related to the sender, a different
243 message to the same recipient with a different sender could confuse
244 things. In particualar, this can happen when sending to a greylisting
245 server, but other circumstances could also provoke similar problems.
246 I have changed the default so that the retry time for these errors is now
247 based a combination of the sender and recipient addresses. This change
248 can be overridden by setting address_retry_include_sender=false in the
249 smtp transport.
250
99ea1c86
PH
251PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
252 remote server are returned as part of bounce messages. This was not
253 happening for LMTP over a pipe (the lmtp transport), but now it is the
254 same for both kinds of LMTP.
255
a2042e78
PH
256PH/38 Despite being documented as not happening, Exim was rewriting addresses
257 in header lines that were in fact CNAMEs. This is no longer the case.
258
4fbcfc2e
PH
259PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
260 and queue runs started by the daemon processed all messages. This has
261 been fixed so that -R and -S can now usefully be given with -q<time>.
262
aa41d2de
PH
263PH/40 Import PCRE release 6.7 (fixes some bugs).
264
af561417
PH
265PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
266
3cc66b45
PH
267PH/42 Give an error if -q is specified more than once.
268
194cc0e4
PH
269PH/43 Renamed the variables $interface_address and $interface_port as
270 $received_ip_address and $received_port, to make it clear that these
271 values apply to message reception, and not to the outgoing interface when
272 a message is delivered. (The old names remain recognized, of course.)
273
a401ddaa
PH
274PH/44 There was no timeout on the connect() call when using a Unix domain
275 socket in the ${readsocket expansion. There now is.
276
4e88a19f
PH
277PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
278 be meaningful with "accept".
279
944e9e9c 280
478be7b0
SC
281Exim version 4.63
282-----------------
283
284SC/01 Use a glob alias rather than an array ref in eximstats generated
285 parser. This improves both readability and performance.
286
287SC/02 Collect SpamAssassin and rejection statistics in eximstats.
288 Don't display local sender or destination tables in eximstats unless
289 there is data to show.
290 Added average volumes into the eximstats top table text output.
291
292SC/03 Collect data on the number of addresses (recipients) as well
293 as the number of messages in eximstats.
294
2b965a65
TF
295TF/01 Correct an error in the documentation for the redirect router. Exim
296 does (usually) call initgroups() when daemonizing.
478be7b0 297
45b91596
PH
298TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
299 with consistent privilege compared to when running as a daemon.
478be7b0 300
c59f5781
TF
301TF/03 Note in the spec that $authenticated_id is not set for local
302 submissions from trusted users.
303
90fc3069
TF
304TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
305 Thanks to Dean Brooks <dean@iglou.com> for the patch.
306
6083aca0
TF
307TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
308 by adding some example configuration directives to the default
309 configuration file. A little bit of work is required to uncomment the
310 directives and define how usernames and passwords are checked, but
311 there is now a framework to start from.
312
765b530f
PH
313PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
314 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
315 without this. I don't know how relevant this is to other LDAP libraries.
316
4e167a8c
PH
317PH/02 Add the verb name to the "unknown ACL verb" error.
318
4608d683
PH
319PH/03 Magnus Holmgren's patch for filter_prepend_home.
320
b8dc3e4a
PH
321PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
322
5418e93b
PH
323PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
324 directory not expanded when it should be if an expanded home directory
325 was set for the address (which is overridden by the transport).
326
b4a9bda2
PH
327PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
328 libradius.
329
45b91596
PH
330PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
331 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
332 because it is too late at that time, and has no effect.
333
5547e2c5
PH
334PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
335 security issue with \' (bugzilla #107). I could not use the
336 PQescapeStringConn() function, because it needs a PGconn value as one of
337 its arguments.
338
dbcef0ea
PH
339PH/08 When testing addresses using -bt, indicate those final addresses that
340 are duplicates that would not cause an additional delivery. At least one
341 person was confused, thinking that -bt output corresponded to deliveries.
342 (Suppressing duplicates isn't a good idea as you lose the information
343 about possibly different redirections that led to the duplicates.)
344
25257489
PH
345PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
346 systems where poll() doesn't work, in particular OS X.
347
c816d124
PH
348PH/10 Added more information to debugging output for retry time not reached.
349
a9ccd69a
PH
350PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
351 operations in malware.c.
352
75fa1910
PH
353PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
354 signatures.
355
a7d7aa58
PH
356PH/13 If write_rejectlog was set false when logging was sent to syslog with
357 syslog_duplication set false, log lines that would normally be written
358 both the the main log and to the reject log were not written to syslog at
359 all.
360
42119b09
PH
361PH/14 In the default configuration, change the use of "message" in ACL warn
362 statements to "add_header".
363
41609df5
PH
364PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
365 not followed by a command (e.g. "seen endif").
366
a5bd321b
PH
367PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
368 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
369 latter.
370
e85a7ad5 371PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
372 so that it is now:
373
e85a7ad5
PH
374 ${if or { \
375 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
376 { match{$h_precedence:}{(?i)bulk|list|junk} } \
377 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
378 }{no}{yes}}
379
e85a7ad5
PH
380 The Auto-Submitted: and various List- headers are standardised, whereas I
381 don't think Precedence: ever was.
5dff5817 382
d8fe1c03
PH
383PH/18 Refactored debugging code in route_finduser() to show more information,
384 in particular, the error code if getpwnam() issues one.
385
16282d2b
PH
386PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
387 This is apparently needed in addition to the PH/07 change above to avoid
388 any possible encoding problems.
389
35d40a98
PH
390PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
391 but not after initializing Perl.
392
034d99ab
PH
393PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
394 output them only if debugging. By default they are written stderr,
395 apparently, which is not desirable.
396
6ec97b1b
PH
397PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
398 queries.
399
e22ca4ac
JJ
400JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
401 --not options
402
403JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
404
33d73e3b
PH
405PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
406 authenticated or an ident call has been made. Suppress the default
407 values for $authenticated_id and $authenticated_sender (but permit -oMai
408 and -oMas) when testing with -bh.
409
9ecb03f3
PH
410PH/24 Re-jigged the order of the tests in the default configuration so that the
411 tests for valid domains and recipients precede the DNS black list and CSA
412 tests, on the grounds that those ones are more expensive.
413
084efe8d
PH
414PH/25 Exim was not testing for a space following SMTP commands such as EHLO
415 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
416 This bug exists in every version of Exim that I still have, right back to
417 0.12.
418
366fc9f0
PH
419PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
420 However, an attempt to turn on case-sensitivity in a regex key by
421 including (?-i) didn't work because the subject string was already
422 lowercased, and the effects were non-intuitive. It turns out that a
423 one-line patch can be used to allow (?-i) to work as expected.
424
c59f5781 425
c887c79e
TF
426Exim version 4.62
427-----------------
428
429TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
430 other effects) broke the use of negated acl sub-conditions.
431
1cce3af8
PH
432PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
433 patch).
434
afb3eaaf
PH
435PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
436 "Deny" causes Exim to reject the incoming connection with a 554 error.
437 Unfortunately, if there is a major crisis, such as a disk failure,
438 tcp-wrappers gives "deny", whereas what one would like would be some
439 kind of temporary error. A kludge has been added to help with this.
440 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
441 554 error is used if errno is still zero or contains ENOENT (which occurs
442 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
443 451 error is used.
444
e173618b
PH
445PH/03 Add -lutil to the default FreeBSD LIBS setting.
446
dd16e114
PH
447PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
448 errors. Otherwise a message that provokes a temporary error (when other
449 messages do not) can cause a whole host to time out.
450
f7fd3850
PH
451PH/05 Batch deliveries by appendfile and pipe transports did not work when the
452 addresses were routed directly to files or pipes from a redirect router.
453 File deliveries just didn't batch; pipe deliveries might have suffered
454 odd errors.
455
d87df92c
PH
456PH/06 A failure to get a lock for a hints database would erroneously always say
457 "Failed to get write lock", even when it was really a read lock.
458
7e9f683d
PH
459PH/07 The appendfile transport was creating MBX lock files with a fixed mode
460 of 0600. This has been changed to use the value of the lockfile_mode
461 option (which defaults to 0600).
462
bfad5236
PH
463PH/08 Applied small patch from the Sieve maintainer.
464
01c490df
PH
465PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
466 folder from quota calculations, a direct delivery into this folder messed
467 up the contents of the maildirsize file. This was because the regex was
468 used only to exclude .Trash (or whatever) when the size of the mailbox
469 was calculated. There was no check that a delivery was happening into an
470 excluded directory. This bug has been fixed by ignoring all quota
471 processing for deliveries into excluded directories.
472
d6629cdc
PH
473PH/10 Added the maildirfolder_create_regex option to appendfile.
474
1cce3af8 475
214e2000
PH
476Exim version 4.61
477-----------------
478
479PH/01 The code for finding all the local interface addresses on a FreeBSD
480 system running IPv6 was broken. This may well have applied to all BSD
481 systems, as well as to others that have similar system calls. The broken
482 code found IPv4 interfaces correctly, but gave incorrect values for the
483 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
484 that it would not match correctly against @[] and not recognize the IPv6
485 addresses as local.
486
f9daeae0
PH
487PH/02 The ipliteral router was not recognizing addresses of the form user@
488 [ipv6:....] because it didn't know about the "ipv6:" prefix.
489
7e66e54d
PH
490PH/03 Added disable_ipv6.
491
c8ea1597
PH
492PH/04 Changed $reply_address to use the raw form of the headers instead of the
493 decoded form, because it is most often used to construct To: headers
494 lines in autoreplies, and the decoded form may well be syntactically
495 invalid. However, $reply_address has leading white space removed, and all
496 newlines turned into spaces so that the autoreply transport does not
497 grumble.
498
911f6fde
PH
499PH/05 If group was specified without a user on a router, and no group or user
500 was specified on a transport, the group from the router was ignored.
501
47ca6d6c
PH
502PH/06 Increased the number of ACL variables to 20 of each type, and arranged
503 for visible compile-time settings that can be used to change these
504 numbers, for those that want even more. Backwards compatibility with old
505 spool files has been maintained. However, going back to a previous Exim
506 release will lost any variables that are in spool files.
507
ed0e9820
PH
508PH/07 Two small changes when running in the test harness: increase delay when
509 passing a TCP/IP connection to a new process, in case the original
510 process has to generate a bounce, and remove special handling of
511 127.0.0.2 (sic), which is no longer necessary.
512
eff37e47
PH
513PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
514 be the same on different OS.
515
1921d2ea
PH
516PH/09 Moved a debug statement in filter processing to avoid a race problem when
517 testing.
518
b3f69ca8
JJ
519JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
520 whether --show-vars was specified or not
521
522JJ/02 exipick: Added support for new ACL variable spool format introduced
523 in 4.61-PH/06
524
424a1c63
PH
525PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
526 syntactically invalid From: or Reply-to: line, and a filter used this to
527 generate an autoreply, and therefore failed to obtain an address for the
528 autoreply, Exim could try to deliver to a non-existent relative file
529 name, causing unrelated and misleading errors. What now happens is that
530 it logs this as a hard delivery error, but does not attempt to create a
531 bounce message.
532
7a100415
PH
533PH/11 The exinext utility has a -C option for testing purposes, but although
534 the given file was scanned by exinext itself; it wasn't being passed on
535 when Exim was called.
536
19b9dc85
PH
537PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
538 an end-of-file indication when reading a command response.
539
309bd837
PH
540PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
541 compiled. In many other places in Exim, IPv6 addresses are always
542 recognized, so I have changed this. It also means that IPv4 domain
543 literals of the form [IPV4:n.n.n.n] are now always recognized.
544
59e82a2a
PH
545PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
546 used if the router is not running as root, for example, when verifying at
547 ACL time, or when using -bh. The debugging output from this situation was
548 non-existent - all you got was a failure to exec. I have made two
549 changes:
550
551 (a) Failures to set uid/gid, the current directory, or a process leader
552 in a subprocess such as that created by queryprogram now generate
553 suitable debugging ouput when -d is set.
554
555 (b) The queryprogram router detects when it is not running as root,
556 outputs suitable debugging information if -d is set, and then runs
557 the subprocess without attempting to change uid/gid.
558
9edc04ce
PH
559PH/15 Minor change to Makefile for building test_host (undocumented testing
560 feature).
561
1349e1e5
PH
562PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
563 additional section of a DNS packet that returns MX or SRV records.
564 Instead, it always explicitly searches for A/AAAA records. This avoids
565 major problems that occur when a DNS server includes only records of one
566 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
567 fixed another bug: if SRV records were looked up and the corresponding
568 address records were *not* found in the additional section, the port
569 values from the SRV records were lost.
570
ea49d0e1
PH
571PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
572 using the correct key (the original address) when searching the retry
573 rules in order to find which one to use for generating the retry hint.
574
064a94c9
PH
575PH/18 If quota_warn_message contains a From: header, Exim now refrains from
576 adding the default one. Similarly, if it contains a Reply-To: header, the
577 errors_reply_to option, if set, is not used.
578
727071f8
PH
579PH/19 When calculating a retry time, Exim used to measure the "time since
580 failure" by looking at the "first failed" field in the retry record. Now
581 it does not use this if it is later than than the arrival time of the
582 message. Instead it uses the arrival time. This makes for better
583 behaviour in cases where some deliveries succeed, thus re-setting the
584 "first failed" field. An example is a quota failure for a huge message
585 when small messages continue to be delivered. Without this change, the
586 "time since failure" will always be short, possible causing more frequent
587 delivery attempts for the huge message than are intended.
dd16e114 588 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 589
f78eb7c6
PH
590PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
591 $1, $2, $3) because the numerical variables can be reset during some
592 expansion items (e.g. "match"), thereby losing the authentication data.
593
21c28500
PH
594PH/21 Make -bV show the size of off_t variables so that the test suite can
595 decide whether to run tests for quotas > 2G.
596
597PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
598 mailbox_size, and mailbox_filecount in the appendfile transport. If a
599 filecount value is greater than 2G or if a quota value is greater than 2G
600 on a system where the size of off_t is not greater than 4, a panic error
601 is given.
602
1688f43b
PH
603PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
604 never match. The debug and -bh output now contains an explicit error
605 message indicating a malformed IPv4 address or mask.
606
607PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
608 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
609 PH/23 above applies.
610
9675b384
PH
611PH/25 Do not write to syslog when running in the test harness. The only
612 occasion when this arises is a failure to open the main or panic logs
613 (for which there is an explicit test).
614
6a3f1455
PH
615PH/26 Added the /no_tell option to "control=freeze".
616
dac79d3e
PH
617PH/27 If a host name lookup failed very early in a connection, for example, if
618 the IP address matched host_lookup and the reverse lookup yielded a name
619 that did not have a forward lookup, an error message of the form "no IP
620 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
621 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 622
5977a0b3
PH
623PH/28 An enabling patch from MH: add new function child_open_exim2() which
624 allows the sender and the authenticated sender to be set when
625 submitting a message from within Exim. Since child_open_exim() is
626 documented for local_scan(), the new function should be too.
627
c91535f3
PH
628PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
629 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
630 results in an empty string is now treated as unset.
631
0d46a8c8
PH
632PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
633
278c6e6c
PH
634PH/31 Added sender_verify_fail logging option.
635
2cbb4081
PH
636PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
637 needed by RFC 822 but not by RFC 2822 was commented out. I have now
638 tidied the source and removed it altogether.
639
3eef829e
PH
640PH/33 When a queue run was abandoned because the load average was too high, a
641 log line was always written; now it is written only if the queue_run log
642 selector is set. In addition, the log line for abandonment now contains
643 information about the queue run such as the pid. This is always present
644 in "start" and "stop" lines but was omitted from the "abandon" line.
645
1ab95fa6
PH
646PH/34 Omit spaces between a header name and the colon in the error message that
647 is given when verify = headers_syntax fails (if there are lots of them,
648 the message gets confusing).
649
230205fc
PH
650PH/35 Change the default for dns_check_names_pattern to allow slashes within
651 names, as there are now some PTR records that contain slashes. This check
652 is only to protect against broken name servers that fall over on strange
653 characters, so the fact that it applies to all lookups doesn't matter.
654
75e0e026
PH
655PH/36 Now that the new test suite is complete, we can remove some of the
656 special code in Exim that was needed for the old test suite. For example,
657 sorting DNS records because real resolvers return them in an arbitrary
658 order. The new test suite's fake resolver always returns records in the
659 same order.
660
661PH/37 When running in the test harness, use -odi for submitted messages (e.g.
662 bounces) except when queue_only is set, to avoid logging races between
663 the different processes.
664
145396a6
PH
665PH/38 Panic-die if .include specifies a non-absolute path.
666
3cd34f13
PH
667PH/39 A tweak to the "H" retry rule from its user.
668
11121d3d
JJ
669JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
670 a label. They prevented compilation on older perls.
671
672JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
673 a warning to be raised on newish perls.
674
675JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
676 on queue. Changes to match documented behaviour of showing count of
677 messages matching specified criteria.
678
8def5aaf
PH
679PH/40 Changed the default ident timeout from 30s to 5s.
680
929ba01c
PH
681PH/41 Added support for the use of login_cap features, on those BSD systems
682 that have them, for controlling the resources used by pipe deliveries.
683
2632889e
PH
684PH/42 The content-scanning code uses fopen() to create files in which to put
685 message data. Previously it was not paying any attention to the mode of
686 the files. Exim runs with umask(0) because the rest of the code creates
687 files with open(), and sets the required mode explicitly. Thus, these
688 files were ending up world-writeable. This was not a big issue, because,
689 being within the spool directory, they were not world-accessible. I have
690 created a function called modefopen, which takes an additional mode
691 argument. It sets umask(777), creates the file, chmods it to the required
692 mode, then resets the umask. All the relevant calls to fopen() in the
693 content scanning code have been changed to use this function.
694
944a9c55
PH
695PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
696 to 24 hours. This avoids potential overflow problems when processing G
697 and H retry rules. I suspect nobody ever tinkers with this value.
698
4a23603b
PH
699PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
700
4730f942
PH
701PH/45 When the plaintext authenticator is running as a client, the server's
702 challenges are checked to ensure they are valid base64 strings. By
703 default, the authentication attempt is cancelled if an invalid string is
704 received. Setting client_ignore_invalid_base64 true ignores these errors.
705 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
706 they are received. Thus, the responses can be made to depend on the
707 challenges. If an invalid string is ignored, an empty string is placed in
708 the variable.
709
30dba1e6
PH
710PH/46 Messages that are created by the autoreply transport now contains a
711 References: header, in accordance with RFCs 2822 and 3834.
712
382afc6b
PH
713PH/47 Added authenticated_sender_force to the smtp transport.
714
a86229cf
PH
715PH/48 The ${prvs expansion was broken on systems where time_t was long long.
716
50c99ba6
PH
717PH/49 Installed latest patch from the Sieve maintainer.
718
d35e429d
PH
719PH/50 When an Exim quota was set without a file count quota, and mailbox_size
720 was also set, the appendfile transport was unnecessarily scanning a
721 directory of message files (e.g. for maildir delivery) to find the count
722 of files (along with the size), even though it did not need this
723 information. It now does the scan only if it needs to find either the
724 size of the count of files.
725
f90d018c
PH
726PH/51 Added ${time_eval: to convert Exim time strings into seconds.
727
75def545
PH
728PH/52 Two bugs concerned with error handling when the smtp transport is
729 used in LMTP mode:
730
731 (i) Exim was not creating retry information for temporary errors given
732 for individual recipients after the DATA command when the smtp transport
733 was used in LMTP mode. This meant that they could be retried too
734 frequently, and not timed out correctly.
735
736 (ii) Exim was setting the flag that allows error details to be returned
737 for LMTP errors on RCPT commands, but not for LMTP errors for individual
738 recipients that were returned after the DATA command.
739
740PH/53 This is related to PH/52, but is more general: for any failing address,
741 when detailed error information was permitted to be returned to the
742 sender, but the error was temporary, then after the final timeout, only
743 "retry timeout exceeded" was returned. Now it returns the full error as
744 well as "retry timeout exceeded".
745
c46782ef
PH
746PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
747 do this, and (what is worse) MTAs that accept it.
748
71fafd95
PH
749PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
750 will now be deprecated.
751
2c5db4fd
PH
752PH/56 New os.c-cygwin from the Cygwin maintainer.
753
9cf6b11a
JJ
754JJ/06 exipick: added --unsorted option to allow unsorted output in all output
755 formats (previously only available in exim formats via -bpr, -bpru,
756 and -bpra. Now also available in native and exiqgrep formats)
757
758JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
759 with very large, slow to parse queues
760
761JJ/08 exipick: added ! as generic prefix to negate any criteria format
762
763JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
764
898d150f
PH
765PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
766 responses to authentication challenges, though it was showing the
767 challenges; (ii) I've removed the CR characters from the debug output for
768 SMTP output lines.
769
46218253
PH
770PH/58 Allow for the insertion of a newline as well as a space when a string
771 is turned into more than one encoded-word during RFC 2047 encoding. The
772 Sieve code now uses this.
773
e97957bc
PH
774PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
775 data_4xx, lost_connection, tls_required.
776
81e509d7
PH
777PH/60 When a VRFY deferred or FAILED, the log message rather than the user
778 message was being sent as an SMTP response.
779
3d240ff7
PH
780PH/61 Add -l and -k options to exicyclog.
781
b37c4101
PH
782PH/62 When verifying, if an address was redirected to one new address, so that
783 verification continued, and the new address failed or deferred after
784 having set something in $address_data, the value of $address_data was not
785 passed back to the ACL. This was different to the case when no
786 redirection occurred. The value is now passed back in both cases.
787
79378e0f
PH
788PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
789 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
790 use login_cap.h, so on its own it isn't the distinguishing feature. The
791 new name refers directly to the setclassresources() function.
792
e49c7bb4
PH
793PH/65 Added configuration files for NetBSD3.
794
d114ec46
PH
795PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
796
f3d7df6c
PH
797PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
798 is preferred over IPv4.
799
715ab376
PH
800PH/68 The bounce_return_message and bounce_return_body options were not being
801 honoured for bounces generated during the reception of non-SMTP messages.
802 In particular, this applied to messages rejected by the ACL. This bug has
803 been fixed. However, if bounce_return_message is true and bounce_return_
804 body is false, the headers that are returned for a non-SMTP message
805 include only those that have been read before the error was detected.
806 (In the case of an ACL rejection, they have all been read.)
807
6b31b150
PH
808PH/69 The HTML version of the specification is now built in a directory called
809 spec_html instead of spec.html, because the latter looks like a path with
810 a MIME-type, and this confuses some software.
811
812PH/70 Catch two compiler warnings in sieve.c.
813
d515a917
PH
814PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
815 function verify_get_ident() calls ip_connect() to connect a socket, but
816 if the "connect()" function timed out, ip_connect() used to close the
817 socket. However, verify_get_ident() also closes the socket later, and in
818 between Exim writes to the log, which may get opened at this point. When
819 the socket was closed in ip_connect(), the log could get the same file
820 descriptor number as the socket. This naturally causes chaos. The fix is
821 not to close the socket in ip_connect(); the socket should be closed by
822 the function that creates it. There was only one place in the code where
823 this was missing, in the iplookup router, which I don't think anybody now
824 uses, but I've fixed it anyway.
825
9b8fadde
PH
826PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
827 well as to direct DNS lookups. Otherwise the handling of names in host
828 lists is inconsistent and therefore confusing.
829
214e2000 830
5de37277
PH
831Exim version 4.60
832-----------------
833
cc38ddbf
PH
834PH/01 Two changes to the default runtime configuration:
835
836 (1) Move the checks for relay_from_hosts and authenticated clients from
837 after to before the (commented out) DNS black list checks.
838
839 (2) Add control=submission to the relay_from_hosts and authenticated
840 clients checks, on the grounds that messages accepted by these
841 statements are most likely to be submissions.
5de37277 842
72fdd6ae
PH
843PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
844
845 (1) Generate an error if the third argument for the ${prvs expansion is
846 not a single digit.
847
848 (2) Treat a missing third argument of ${prvscheck as if it were an empty
849 string.
850
851 (3) Reset the variables that are obtained from the first argument of
852 ${prvscheck and used in the second argument before leaving the code,
853 because their memory is reclaimed, so using them afterwards may do
854 silly things.
855
856 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
857 one (it's much easier than Tom thought :-).
858
859 (5) Because of (4), we can now allow for the use of $prvscheck_result
860 inside the third argument.
cb9328de 861
cb741023
PH
862PH/03 For some reason, the default setting of PATH when running a command from
863 a pipe transport was just "/usr/bin". I have changed it to
864 "/bin:/usr/bin".
865
f174f16e
PH
866PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
867 anything to be listed in the output from -bV.
b2f5a032 868
c25242d7
PH
869PH/05 When a filter generated an autoreply, the entire To: header line was
870 quoted in the delivery log line, like this:
871
872 => >A.N.Other <ano@some.domain> <original@ddress> ...
873
874 This has been changed so that it extracts the operative address. There
875 may be more than one such address. If so, they are comma-separated, like
876 this:
877
878 => >ano@some.domain,ona@other.domain <original@ddress> ...
879
82c19f95
PH
880PH/06 When a client host used a correct literal IP address in a HELO or EHLO
881 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
882 not being looked up in the rDNS to get a host name, Exim was showing the
883 IP address twice in Received: lines, even though the IP addresses were
884 identical. For example:
885
886 Received: from [1.2.3.4] (helo=[1.2.3.4])
887
888 However, if the real host name was known, it was omitting the HELO data
889 if it matched the actual IP address. This has been tidied up so that it
890 doesn't show the same IP address twice.
891
d7ffbc12
PH
892PH/07 When both +timestamp and +memory debugging was on, the value given by
893 $tod_xxx expansions could be wrong, because the tod_stamp() function was
894 called by the debug printing, thereby overwriting the timestamp buffer.
895 Debugging no longer uses the tod_stamp() function when +timestamp is set.
896
9f526266
PH
897PH/08 When the original message was included in an autoreply transport, it
898 always said "this is a copy of the message, including all the headers",
899 even if body_only or headers_only was set. It now gives an appropriate
900 message.
901
87fcc8b9
PH
902PH/09 Applied a patch from the Sieve maintainer which:
903
904 o fixes some comments
905 o adds the (disabled) notify extension core
906 o adds some debug output for the result of if/elsif tests
907 o points to the current vacation draft in the documentation
908 and documents the missing references header update
909
910 and most important:
911
912 o fixes a bug in processing the envelope test (when testing
913 multiple envelope elements, the last element determinted the
914 result)
915
456682f5
PH
916PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
917 Electronic Mail") by including:
918
919 Auto-submitted: auto-generated
920
921 in the messages that it generates (bounce messages and others, such as
922 warnings). In the case of bounce messages for non-SMTP mesages, there was
923 also a typo: it was using "Auto_submitted" (underscore instead of
924 hyphen). Since every message generated by Exim is necessarily in response
925 to another message, thes have all been changed to:
926
927 Auto-Submitted: auto-replied
928
929 in accordance with these statements in the RFC:
930
931 The auto-replied keyword:
932
933 - SHOULD be used on messages sent in direct response to another
934 message by an automatic process,
935
936 - MUST NOT be used on manually-generated messages,
937
938 - MAY be used on Delivery Status Notifications (DSNs) and Message
939 Disposition Notifications (MDNs),
940
941 - MUST NOT be used on messages generated by automatic or periodic
942 processes, except for messages which are automatic responses to
943 other messages.
944
3e46c1aa
PH
945PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
946 to the default Received: header definition.
456682f5 947
49826d12
PH
948PH/12 Added log selector acl_warn_skipped (default on).
949
eba0c039
PH
950PH/13 After a successful wildlsearch lookup, discard the values of numeric
951 variables because (a) they are in the wrong storage pool and (b) even if
952 they were copied, it wouldn't work properly because of the caching.
953
a0d6ba8a
PH
954PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
955 checking when decoding. Apparently there are clients that generate
956 overlong encoded strings. Why am I not surprised?
957
f0917727
PH
958PH/15 If the first argument of "${if match_address" was not empty, but did not
959 contain an "@" character, Exim crashed. Now it writes a panic log message
960 and treats the condition as false.
961
096fee00
PH
962PH/16 In autoreply, treat an empty string for "once" the same as unset.
963
024bd3c2
PH
964PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
965 extension "envelope-auth". The code is finished and in agreement with
966 other implementations, but there is no documentation so far and in fact,
967 nobody wrote the draft yet. This extension is currently #undef'ed, thus
968 not changing the active code.
969
970 Print executed "if" and "elsif" statements when debugging is used. This
971 helps a great deal to understand what a filter does.
972
973 Document more things not specified clearly in RFC3028. I had all this
974 sorted out, when out of a sudden new issues came to my mind. Oops."
975
df199fec
PH
976PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
977 (Bugzilla #53).
978
d27f1df3
PH
979PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
980 canonical form (as documented). However, after a host name lookup from
981 the IP address, check_host() was doing a simple string comparison with
982 addresses acquired from the DNS when checking that the found name did
983 have the original IP as one of its addresses. Since any found IPv6
984 addresses are likely to be in abbreviated form, the comparison could
985 fail. Luckily, there already exists a function for doing the comparison
986 by converting both addresses to binary, so now that is used instead of
987 the text comparison.
988
96776534
PH
989PH/20 There was another similar case to PH/19, when a complete host name was
990 given in a host list; looking up its IP address could give an abbreviated
991 form, whereas the current host's name might or might not be abbreviated.
992 The same fix has been applied.
993
5de37277 994
9a799bc0
PH
995Exim version 4.54
996-----------------
997
998PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
999 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1000 It now does.
1001
99a4b039
PH
1002PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1003 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1004
1005PH/03 Typo: missing ".o" in src/pcre/Makefile.
1006
4b233853
PH
1007PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1008 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1009 Also, for "Auto-Submitted", treat anything other than "no" as
1010 non-personal, in accordance with RFC 3834. (Previously it treated
1011 anything starting "auto-" as non-personal.)
1012
8857ccfd
PH
1013TF/01 The control=submission/name=... option had a problem with syntax
1014 errors if the name included a slash character. The /name= option
1015 now slurps the rest of the string, so it can include any characters
1016 but it must come last in the list of options (after /sender_retain
1017 or /domain=).
1018
433a2980
PH
1019PH/05 Some modifications to the interface to the fake nameserver for the new
1020 testing suite.
1021
3e46c1aa 1022
9a799bc0 1023
e3a311ba
TK
1024Exim version 4.53
1025-----------------
1026
1027TK/01 Added the "success_on_redirect" address verification option. See
1028 NewStuff for rationale and an example.
1029
13b685f9
PH
1030PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1031
395ff96d
PH
1032PH/02 Patch to exigrep to allow it to work on syslog lines.
1033
5b68f6e4
PH
1034PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1035 fread() to skip over the body file's header line, because in Cygwin the
1036 header line is locked and is inaccessible.
1037
1ab52c69
PH
1038PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1039 co-exist for some time) to make it clear that it is the Exim ID that is
1040 referenced, not the Message-ID: header line.
1041
b07e6aa3
PH
1042PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1043 string_format() function, because snprintf() does not exist on all
1044 operating systems.
1045
254e032f
PH
1046PH/06 The use of forbid_filter_existstest now also locks out the use of the
1047 ${stat: expansion item.
1048
3af76a81
PH
1049PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1050 protocol synchronization error", to keep the pedants happy.
1051
2548ba04
PH
1052PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1053 well as for IRIX systems, when gcc is being used. See the host.c source
1054 file for comments.
1055
b6c6011d
PH
1056PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1057
cf39cf57
PH
1058PH/10 Named domain lists were not working if used in a queue_smtp_domains
1059 setting.
1060
f1513293
PH
1061PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1062 transport and to the smtp transport in LMTP mode.
1063
727549a4
PH
1064TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1065
af46795e
PH
1066PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1067 run a filter in a subprocess. This could lead to confusion in subsequent
1068 lookups in the parent process. There should also be a search_tidyup() at
1069 the end of the subprocess.
1070
d7b47fd0
PH
1071PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1072 only if the host matched helo_try_verify_hosts, which caused the
1073 verification to occur when the EHLO/HELO command was issued. The ACL just
1074 tested the remembered result. Now, if a previous verification attempt has
1075 not happened, "verify = helo" does it there and then.
1076
ee744174
JJ
1077JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1078
b582ab87
PH
1079TK/03 Fix log output including CR from clamd.
1080
41a13e0a
PH
1081PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1082 exist provoked a memory error which could cause a segfault.
1083
f625cc5a
PH
1084PH/15 Installed PCRE 6.2
1085
1086PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1087
21f7af35
PH
1088PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1089 of the problem. Specifically, suggested +O2 rather than +O1 for the
1090 HP-UX compiler.
1091
31480e42
PH
1092PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1093
2d280592
PH
1094PH/20 If a delivery was routed to a non-standard port by means of an SRV
1095 record, the port was not correctly logged when the outgoing_port log
1096 selector was set (it logged the transort's default port).
1097
7cd1141b
PH
1098PH/21 Added support for host-specific ports to manualroute, queryprogram,
1099 fallback_hosts, and "hosts" in the smtp transport.
1100
1101PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1102 host errors such as "Connection refused".
1103
750af86e
PH
1104PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1105 authentication with radiusclient 0.4.9:
1106
1107 - Error returned from rc_read_config was caught wrongly
1108 - Username/password not passed on to radius server due to wrong length.
1109
1110 The presumption is that some radiusclient API changes for 4.51/PH/17
1111 were not taken care of correctly. The code is still untested by me (my
1112 Linux distribution still has 0.3.2 of radiusclient), but it was
1113 contributed by a Radius user.
1114
1115PH/24 When doing a callout, the value of $domain wasn't set correctly when
1116 expanding the "port" option of the smtp transport.
1117
4304270b
TK
1118TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1119 while reading a MIME header. Thanks to Tom Hughes for a patch.
1120
750af86e
PH
1121PH/24 Include config.h inside local_scan.h so that configuration settings are
1122 available.
1123
64ffc24f
PH
1124PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1125 that in an ACL for RCPT (for example), you can examine exactly what was
1126 received.
1127
5dd9625b
PH
1128PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1129 commands, but it was not correctly comparing the address with the actual
1130 client host address. Thus, it would show the EHLO address in Received:
1131 header lines when this was not necessary.
1132
5591031b
PH
1133PH/27 Added the % operator to ${eval:}.
1134
ba18e66a
PH
1135PH/28 Exim tries to create and chdir to its spool directory when it starts;
1136 it should be ignoring failures (because with -C, for example, it has lost
1137 privilege). It wasn't ignoring creation failures other than "already
1138 exists".
1139
9cec981f
PH
1140PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1141 -bV or -d is used.
1142
aa2b5c79
PH
1143PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1144 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1145 too many continuations, the temporary file was not being removed, and the
1146 return code was incorrect.
aa2b5c79 1147
48a53b7f
PH
1148PH/31 Missing "BOOL" in function definition in filtertest.c.
1149
1c59d63b
PH
1150PH/32 Applied Sieve patches from the maintainer.
1151
671012da
TK
1152TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1153
1509d3a8
PH
1154PH/33 Added "verify = not_blind".
1155
1156PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1157 Local/Makefile (with some defaults set). These are used in built scripts
1158 such as exicyclog, but they have never been used in the exim_install
1159 script (though there are many overriding facilities there). I have
1160 arranged that the exim_install script now takes note of these two
1161 settings.
1162
1163PH/35 Installed configuration files for Dragonfly.
1164
2fe1a124
PH
1165PH/36 When a locally submitted message by a trusted user did not contain a
1166 From: header, and the sender address was obtained from -f or from an SMTP
1167 MAIL command, and the trusted user did not use -F to supply a sender
1168 name, $originator_name was incorrectly used when constructing a From:
1169 header. Furthermore, $originator_name was used for submission mode
1170 messages from external hosts without From: headers in a similar way,
1171 which is clearly wrong.
1172
8800895a
PH
1173PH/37 Added control=suppress_local_fixups.
1174
ccfdb010
PH
1175PH/38 When log_selector = +received_sender was set, and the addition of the
1176 sender made the log line's construction buffer exactly full, or one byte
1177 less than full, an overflow happened when the terminating "\n" was
1178 subsequently added.
1179
1130bfb0
PH
1180PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1181 when the result of a list match is failure because a DNS lookup failed.
1182
ebcb507f
PH
1183PH/40 RM_COMMAND is now used in the building process.
1184
c35e155c
PH
1185PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1186 the "build-* directories that it finds.
1187
95d1f782
PH
1188PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1189 address in a domain literal was a prefix of an interface address.
1190
fd6de02e
PH
1191PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1192 when verifying a sender address, unless rewrite_headers is false.
1193
58de37c5
PH
1194PH/44 Wrote a long comment about why errors_to addresses are verified as
1195 recipients, not senders.
1196
261cf466
TF
1197TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1198 the ratelimit ACL was added.
1199
3ee512ff
PH
1200PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1201
e08c430f
PH
1202PH/46 Added extra information about PostgreSQL errors to the error string.
1203
bef5a11f
PH
1204PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1205 avoiding the need to install special zones in a real server. This is
1206 backwards compatible; if it can't find the fake resolver, it drops back.
1207 Thus, both old and new test suites can be run.
1208
7546de58
TF
1209TF/02 Added util/ratelimit.pl
1210
e5d5a95f
TF
1211TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1212 clock is set back in time.
1213
2e88a017
TF
1214TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1215 Candler <B.Candler@pobox.com>.
1216
a5f65aa4
TF
1217TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1218 OK for addresses that are the result of redirections.
1219
e7726cbf
PH
1220PH/48 A number of further additions for the benefit of the new test suite,
1221 including a fake gethostbyname() that interfaces to the fake DNS resolver
1222 (see PH/47 above).
1223
a7fdad5b
TF
1224TF/06 The fix for widen_domains has also been applied to qualify_single and
1225 search_parents which are the other dnslookup options that can cause
1226 header rewrites.
1227
6af56900
PH
1228PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1229 type ("H").
1230
0925ede6
PH
1231PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1232
66afa403
TF
1233TF/07 Exim produced the error message "an SRV record indicated no SMTP
1234 service" if it encountered an MX record with an empty target hostname.
1235 The message is now "an MX or SRV record indicated no SMTP service".
1236
0154e85a
TF
1237TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1238 if the DNS of the sending site is misconfigured. This is quite a
1239 common situation. This change restores the behaviour of treating a
1240 helo verification defer as a failure.
1241
16f12c76
PH
1242PH/51 If self=fail was set on a router, the bounce message did not include the
1243 actual error message.
1244
bbe902f0 1245
e5a9dba6
PH
1246Exim version 4.52
1247-----------------
1248
1249TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1250
22c3b60b
PH
1251PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1252 command itself ended in error, the underlying message about the transport
1253 filter timeout was being overwritten with the pipe command error. Now the
1254 underlying error message should be appended to the second error message.
1255
06a9b4b5
PH
1256TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1257
c1ac6996
PH
1258PH/02 Reduce the amount of output that "make" produces by default. Full output
1259 can still be requested.
1260
9c7a242c
PH
1261PH/03 The warning log line about a condition test deferring for a "warn" verb
1262 was being output only once per connection, rather than after each
1263 occurrence (because it was using the same function as for successful
1264 "warn" verbs). This seems wrong, so I have changed it.
1265
87ba3f5f
PH
1266TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1267 it should not have, which might have caused a crash in the right
1268 circumstances, but probably never did.
1269
1270PH/04 Installed a modified version of Tony Finch's patch to make submission
1271 mode fix the return path as well as the Sender: header line, and to
1272 add a /name= option so that you can make the user's friendly name appear
1273 in the header line.
1274
29aba418
TF
1275TF/03 Added the control = fakedefer ACL modifier.
1276
fe0dab11
TF
1277TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1278 Mark Lowes for thorough testing.
870f6ba8 1279
11d337a4
TK
1280TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1281
1282TK/03 Merged latest SRS patch from Miles Wilton.
1283
415c8f3b
PH
1284PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1285 with the definition in sysexits.h (which is #included earlier).
1286 Fortunately, Exim does not actually use EX_OK. The code used to try to
1287 preserve the sysexits.h value, by assumimg that macro definitions were
1288 scanned for macro replacements. I have been disabused of this notion,
1289 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1290
958541e9
PH
1291PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1292 in the smtp transport. When a block could not be written in a single
1293 write() function, the timeout was being re-applied to each part-write.
1294 This seems wrong - if the receiver was accepting one byte at a time it
1295 would take for ever. The timeout is now adjusted when this happens. It
1296 doesn't have to be particularly precise.
1297
c206415f
TK
1298TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1299 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1300
2a4be8f9
PH
1301PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1302 without a domain if the check to <postmaster@domain> fails.
1303
1cba11c5
SC
1304SC/01 Eximstats: added -xls and the ability to specify output files
1305 (patch written by Frank Heydlauf).
1306
1307SC/02 Eximstats: use FileHandles for outputing results.
1308
1309SC/03 Eximstats: allow any combination of xls, txt, and html output.
1310
1311SC/04 Eximstats: fixed display of large numbers with -nvr option
1312
1313SC/05 Eximstats: fixed merging of reports with empty tables.
1314
1315SC/06 Eximstats: added the -include_original_destination flag
1316
1317SC/07 Eximstats: removed tabs and trailing whitespace.
1318
1005d00e
TK
1319TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1320
1321TK/06 MBOX spool code: Add real "From " MBOX separator line
1322 so the .eml file is really in mbox format (even though
1323 most programs do not really care). Patch from Alex Miller.
1324
1325TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1326 The latter is generated from $received_to and is only set if the
1327 message has one envelope recipient. SA can use these headers,
1328 obviously out-of-the-box. Patch from Alex Miller.
1329
9b4768fa
PH
1330PH/08 The ${def test on a variable was returning false if the variable's
1331 value was "0", contrary to what the specification has always said!
1332 The result should be true unless the variable is empty.
1333
1334PH/09 The syntax error of a character other than { following "${if
1335 def:variable_name" (after optional whitespace) was not being diagnosed.
1336 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1337 accidental colon was present, for example, could give incorrect results.
1338
0d7eb84a
PH
1339PH/10 Tidied the code in a number of places where the st_size field of a stat()
1340 result is used (not including appendfile, where other changes are about
1341 to be made).
1342
1343PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1344 This involved changing a lot of size variables from int to off_t. It
1345 should work with maildirs and everything.
1346
40727bee
TK
1347TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1348 spamd dying while we are connected to it.
1349
554d2369
TF
1350TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1351 <jgh@wizmail.org>
1352
1f922db1
PH
1353PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1354 function for BDB 4.3.
1355
ef213c3b
PH
1356PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1357
8ac170f3
PH
1358PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1359 the sources for PCRE have been re-arranged and more files are now
1360 involved.
1361
b1c749bb
PH
1362PH/15 The code I had for printing potentially long long variables in PH/11
1363 above was not the best (it lost precision). The length of off_t variables
1364 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1365 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1366 to be "long long int" or "long int". This is needed for the internal
1367 formatting function string_vformat().
b1c749bb 1368
4aac9b49
PH
1369PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1370 the configuration file to be ":syslog", then the script "guesses" where
1371 the logs files are, rather than using the compiled in default. In our
1372 case the guess is not the same as the compiled default, so the script
1373 suddenly stopped working when I started to use syslog. The patch checks
1374 to see if log_file_path is "". If so, it attempts to read it from exim
1375 with no configuration file to get the compiled in version, before it
1376 falls back to the previous guessing code."
1377
294520c8
TK
1378TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1379 implementing BATV in an Exim configuration. See NewStuff for the gory
1380 details.
1381
5bd022fe
PH
1382PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1383 Makefile that are specific to HP-UX.
1384
90e9ce59
PH
1385PH/18 If the "use_postmaster" option was set for a recipient callout together
1386 with the "random" option, the postmaster address was used as the MAIL
1387 FROM address for the random test, but not for the subsequent recipient
1388 test. It is now used for both.
1389
5ea81592
PH
1390PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1391 patch removes a few documentation additions to RFC 3028, because the
1392 latest draft now contains them. It adds the new en;ascii-case comparator
1393 and a new error check for 8bit text in MIME parts. Comparator and
1394 require names are now matched exactly. I enabled the subaddress
1395 extension, but it is not well tested yet (read: it works for me)."
1396
c6c2dc1d
PH
1397PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1398 rework some of the code of TK/09 above to avoid the hardwired use of
1399 "%lld" and "long long". Replaced the call to snprintf() with a call to
1400 string_vformat().
1401
fffffe4c
PH
1402PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1403 records point to non-existent hosts", "retry timeout exceeded", and
1404 "retry time not reached for any host after a long failure period".
ca02eafb 1405
9a26b6b2
PH
1406PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1407 experimental DomainKeys support:
1408
1409 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1410 (2) On an error such as an illegally used "control", the wrong name for
1411 the control was given.
1412
1413 These problems did NOT occur unless DomainKeys support was compiled.
1414
4aee0225
PH
1415PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1416
32d668a5
PH
1417PH/24 Added ${if match_ip condition.
1418
8187c3f3
PH
1419PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1420 databases so that it will be absolutely obvious if a crash occurs in the
1421 DB library. This is a regular occurrence (often caused by mis-matched
1422 db.h files).
1423
ff790e47 1424PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1425 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1426 picked up on a user's system that detects such things. There doesn't seem
1427 to be a gcc warning option for this - only an attribute that has to be
1428 put on the function's prototype. It seems that in Fedora Core 4 they have
1429 set this on a number of new functions. No doubt there will be more in due
1430 course.
ff790e47 1431
5417f6d1
PH
1432PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1433 specify a transport. However, if an address that was verified by such a
1434 router was the subject of a callout, Exim crashed because it tried to
1435 read the rcpt_include_affixes from the non-existent transport. Now it
1436 just assumes that the setting of that option is false. This bug was
1437 introduced by 4.51/PH/31.
1438
59cf8544
PH
1439PH/28 Changed -d+all to exclude +memory, because that information is very
1440 rarely of interest, but it makes the output a lot bigger. People tend to
1441 do -d+all out of habit.
1442
e7ad8a65
PH
1443PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1444 code in os-type was giving problems when libc.so lives in lib64, like on
1445 x86_64 Fedora Core.
1446
ade42478
PH
1447PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1448 aren't the modern standard, and it seems that some systems' include files
1449 don't always have them. Exim was already checking for some of the newer
1450 ones like T_AAAA, and defining it itself. I've added checks for all the
1451 record types that Exim uses.
1452
182ad5cf
PH
1453PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1454 not automatically generating a new one, as it is supposed to. This
1455 prevented TLS from working. If the file did exist, but contained invalid
1456 data, a new version was generated, as expected. It was only the case of a
1457 non-existent file that was broken.
1458
b0d9fc80
TK
1459TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1460 with a change in libdomainkeys > 0.64.
1461
1462TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1463 from DNS. If the selector record carries the flag, it now has
1464 precedence over the domain-wide flag.
1465
1466TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1467
47c7a64a
PH
1468PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1469 the use of a port name that isn't defined in /etc/services) occurred, the
1470 message was deferred as in a normal delivery, and thus remained on the
1471 spool, instead of being failed because of the mua_wrapper setting. This
1472 is now fixed, and I tidied up some of the mua_wrapper messages at the
1473 same time.
1474
a388bce4
SC
1475SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1476 the messages in a hash of arrays rather than using individual hashes.
1477 This is a bit cleaner and results in dramatic memory savings, albeit
1478 at a slight CPU cost.
1479
1480SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1481 as requested by Marc Sherman.
1482
1483SC/10 Eximstats: added histograms for user specified patterns as requested
1484 by Marc Sherman.
1485
0793e4ed
SC
1486SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1487
c58b88df
PH
1488PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1489 fopen() in the content-scanning modules that did not already have it.
1490
e7ad8a65 1491
7982096b
PH
1492Exim version 4.51
1493-----------------
1494
1a46a8c5
PH
1495TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1496 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1497
2f079f46 1498TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1499
1500TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1501
1502PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1503 to test Sieve filters that use "vacation".
1504
1505PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1506 that changes the way the GnuTLS parameters are stored in the cache file.
1507 The new format can be generated externally. For backward compatibility,
1508 if the data in the cache doesn't make sense, Exim assumes it has read an
1509 old-format file, and it generates new data and writes a new file. This
1510 means that you can't go back to an older release without removing the
1511 file.
1512
1513PH/03 A redirect router that has both "unseen" and "one_time" set does not
1514 work if there are any delivery delays because "one_time" forces the
1515 parent to be marked "delivered", so its unseen clone is never tried
1516 again. For this reason, Exim now forbids the simultaneous setting of
1517 these two options.
1518
1519PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1520 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1521 entry if you want to know the details. The fix, however, neglected to
1522 consider the case when local delivery batching is involved. The test for
1523 "previously delivered" was not happening when checking to see if an
1524 address could be batched with a previous (undelivered) one; under
1525 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1526 address.
1a46a8c5
PH
1527
1528PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1529 in its include files, and this causes problems building Exim.
1530
1531PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1532 header_syntax) but Exim was just ignoring anything given after a slash.
1533 In particular, this caused confusion with an attempt to use "verify =
1534 reverse_host_lookup/defer_ok". An error is now given when options are
1535 supplied for verify items that do not have them. (Maybe reverse_host_
1536 lookup should have a defer_ok option, but that's a different point.)
1537
1538PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1539 defined by RFC 821) to 2048, because there were problems with some AUTH
1540 commands, and RFC 1869 says the size should be increased for extended
1541 SMTP commands that take arguments.
1542
1543PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1544 Finch).
1545
1546PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1547 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1548
49c2d5ea
PH
1549PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1550 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1551 whatever). Otherwise the password may appear in the log. Following change
1552 PH/42 below, there is no longer a chance of it appearing in a bounce
1553 message.
49c2d5ea 1554
bf759a8b
PH
1555PH/11 Installed exipick version 20050225.0 from John Jetmore.
1556
83364d30
PH
1557PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1558 of its addresses was ever tried. (Bugzilla bug #2.)
1559
7999bbd7
PH
1560PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1561 the result incorrectly in the debug output. (It correctly added a newline
1562 to what was transported.)
1563
7dbf77c9
PH
1564TF/01 Added $received_time.
1565
74e0617f
PH
1566PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1567 commented out examples of how to interface to a virus scanner and to
1568 SpamAssassin. Also added commented examples of av_scanner and
1569 spamd_address settings.
1570
2f079f46
PH
1571PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1572 and controls are allowed in which ACLs. There were a couple of minor
1573 errors. Some of the entries in the conditions table (which is a table of
1574 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1575 negation of where the condition IS allowed.
1576
8c841523
PH
1577PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1578
7766a4f0
PH
1579PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1580 header file does not have a version number, so I've had to invent a new
1581 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1582 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1583 radiusclient), but it was contributed by a Radius user.
1584
8b417f2c
PH
1585PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1586 files or directories, for OpenSSL.
1587
901f42cb
PH
1588PH/19 When an Exim process that is running as root has to create an Exim log
1589 file, it does so in a subprocess that runs as exim:exim so as to get the
1590 ownership right at creation (otherwise, other Exim processes might see
1591 the file with the wrong ownership). There was no test for failure of this
1592 fork() call, which would lead to the process getting stuck as it waited
1593 for a non-existent subprocess. Forks do occasionally fail when resources
1594 run out. I reviewed all the other calls to fork(); they all seem to check
1595 for failure.
1596
f9b9210e
PH
1597PH/20 When checking for unexpected SMTP input at connect time (before writing
1598 the banner), Exim was not dealing correctly with a non-positive return
1599 from the read() function. If the client had disconnected by this time,
1600 the result was a log entry for a synchronization error with an empty
1601 string after "input=" when read() returned zero. If read() returned -1
1602 (an event I could not check), uninitialized data bytes were printed.
1603 There were reports of junk text (parts of files, etc) appearing after
1604 "input=".
1605
54cdb463
PH
1606PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1607
cf00dad6
PH
1608PH/22 Added support for macro redefinition, and (re)definition in between
1609 driver and ACL definitions.
1610
acb1b346
PH
1611PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1612 forgetting to use the resulting value; it was using the unexpanded value.
1613
c5ddb310
PH
1614PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1615 hadn't been configured. The fix is from Juergen Kreileder, who
1616 understands it better than I do:
1617
1618 "Here's what I see happening with three configured cyrus_sasl
1619 authenticators configured (plain, login, cram-md5):
1620
1621 On startup auth_cyrus_sasl_init() gets called for each of these.
1622 This means three calls to sasl_listmech() without a specified mech_list.
1623 => SASL tests which mechs of all available mechs actually work
1624 => three warnings about OTP not working
1625 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1626
1627 With the patch, sasl_listmech() also gets called three times. But now
1628 SASL's mech_list option is set to the server_mech specified in the the
1629 authenticator. Or in other words, the answer from sasl_listmech()
1630 gets limited to just the mech you're testing for (which is different
1631 for each call.)
1632 => the return list contains just 'plain' or 'login', 'cram-md5' or
1633 nothing depending on the value of ob->server_mech.
1634
1635 I've just tested the patch: Authentication still works fine,
1636 unavailable mechs specified in the exim configuration are still
1637 caught, and the auth.log warnings about OTP are gone."
1638
31619da6
PH
1639PH/25 When debugging is enabled, the contents of the command line are added
1640 to the debugging output, even when log_selector=+arguments is not
1641 specified.
1642
bebaf0fc
PH
1643PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1644 answer is "GNU", and only if the return is "GNU/something" is the answer
1645 "Linux".
1646
475fe28a
PH
1647PH/27 $acl_verify_message is now set immediately after the failure of a
1648 verification in an ACL, and so is available in subsequent modifiers. In
1649 particular, the message can be preserved by coding like this:
1650
1651 warn !verify = sender
1652 set acl_m0 = $acl_verify_message
1653
1654 Previously, $acl_verify_message was set only while expanding "message"
1655 and "log_message" when a very denied access.
1656
7e8bec7a
PH
1657PH/28 Modified OS/os.c-Linux with
1658
1659 -#ifndef OS_LOAD_AVERAGE
1660 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1661
1662 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1663 nomenclature these days.)
1664
e4a89c47
PH
1665PH/29 Installed patch from the Sieve maintainer that adds the options
1666 sieve_useraddress and sieve_subaddress to the redirect router.
1667
5ca2a9a1
PH
1668PH/30 In these circumstances:
1669 . Two addresses routed to the same list of hosts;
1670 . First host does not offer TLS;
1671 . First host accepts first address;
1672 . First host gives temporary error to second address;
1673 . Second host offers TLS and a TLS session is established;
1674 . Second host accepts second address.
1675 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1676 and peerdn, if requested) that were in fact used only for the second
1677 address.
7e8bec7a 1678
c688b954
PH
1679PH/31 When doing a callout as part of verifying an address, Exim was not paying
1680 attention to any local part prefix or suffix that was matched by the
1681 router that accepted the address. It now behaves in the same way as it
1682 does for delivery: the affixes are removed from the local part unless
1683 rcpt_include_affixes is set on the transport.
1684
fed77020
PH
1685PH/32 Add the sender address, as F=<...>, to the log line when logging a
1686 timeout during the DATA phase of an incoming message.
1687
7fe1560f
PH
1688PH/33 Sieve envelope tests were broken for match types other than :is. I have
1689 applied a patch sanctioned by the Sieve maintainer.
c688b954 1690
ebb6e6d5
PH
1691PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1692 the uid or gid is negative. A case of a negative gid caused this to be
1693 noticed. The fix allows for either to be negative.
1694
9c4e8f60
PH
1695PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1696 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1697 overlooked.
1698
1699PH/36 The change PH/12 above was broken. Fixed it.
1700
d7174846
PH
1701PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1702 the grounds that routing the same address twice would always produce the
1703 same answer. This might have been true once, but it is certainly no
1704 longer true now. Routing a child address may depend on the previous
1705 routing that produced that child. Some complicated redirection strategies
1706 went wrong when messages had multiple recipients, and made Exim's
1707 behaviour dependent on the order in which the addresses were given.
1708
1709 I have moved the duplicate checking until after the routing is complete.
1710 Exim scans the addresses that are assigned to local and remote
1711 transports, and removes any duplicates. This means that more work will be
1712 done, as duplicates will always all be routed, but duplicates are
1713 presumably rare, so I don't expect this is of any significance.
1714
1715 For deliveries to pipes, files, and autoreplies, the duplicate checking
1716 still happens during the routing process, since they are not going to be
1717 routed further.
1718
cfe75fc3
PH
1719PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1720 It corrects a timeout issue with spamd. This is Ian's comment: "The
1721 background is that sometimes spamd either never reads data from a
1722 connection it has accepted, or it never writes response data. The exiscan
1723 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1724 blindly assumes that writes won't block so it may never time out."
1725
be22d70e
PH
1726PH/39 Allow G after quota size as well as K and M.
1727
0612b098
PH
1728PH/40 The value set for $authenticated_id in an authenticator may not contain
1729 binary zeroes or newlines because the value is written to log lines and
1730 to spool files. There was no check on this. Now the value is run through
1731 the string_printing() function so that such characters are converted to
1732 printable escape sequences.
1733
2e0c1448
PH
1734PH/41 $message_linecount is a new variable that contains the total number of
1735 lines in the message. Compare $body_linecount, which is the count for the
1736 body only.
1737
447d236c
PH
1738PH/42 Exim no longer gives details of delivery errors for specific addresses in
1739 bounce and delay warning messages, except in certain special cases, which
1740 are as follows:
1741
1742 (a) An SMTP error message from a remote host;
1743 (b) A message specified in a :fail: redirection;
1744 (c) A message specified in a "fail" command in a system filter;
1745 (d) A message specified in a FAIL return from the queryprogram router;
1746 (e) A message specified by the cannot_route_message router option.
1747
1748 In these cases only, Exim does include the error details in bounce and
1749 warning messages. There are also a few cases where bland messages such
1750 as "unrouteable address" or "local delivery error" are given.
1751
d20976dc
PH
1752PH/43 $value is now also set for the "else" part of a ${run expansion.
1753
f656d135
PH
1754PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1755 being worked on, but at least Exim now implements the latest version to
1756 play with."
1757
2e2a30b4
PH
1758PH/45 In a pipe transport, although a timeout while waiting for the pipe
1759 process to complete was treated as a delivery failure, a timeout while
1760 writing the message to the pipe was logged, but erroneously treated as a
1761 successful delivery. Such timeouts include transport filter timeouts. For
1762 consistency with the overall process timeout, these timeouts are now
1763 treated as errors, giving rise to delivery failures by default. However,
1764 there is now a new Boolean option for the pipe transport called
1765 timeout_defer, which, if set TRUE, converts the failures into defers for
1766 both kinds of timeout. A transport filter timeout is now identified in
1767 the log output.
1768
9176e9f0
PH
1769PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1770 systems where "make" and "gmake" are different, calling "gmake" at top
1771 level broke things. I've arranged for the value of $(MAKE) to be passed
1772 from the Makefile to this script so that it can call the same version of
1773 "make".
1774
7982096b 1775
bbe902f0
PH
1776A note about Exim versions 4.44 and 4.50
1777----------------------------------------
1778
1779Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1780changes of various kinds. As a consequence, a big documentation update was
1781needed. This delayed the release for rather longer than seemed good, especially
1782in the light of a couple of (minor) security issues. Therefore, the changes
1783that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1784release. So 4.44 and 4.50 are in effect two different branches that both start
1785from 4.43.
1786
1787I have left the 4.50 change log unchanged; it contains all the changes since
17884.43. The change log for 4.44 is below; many of its items are identical to
1789those for 4.50. This seems to be the most sensible way to preserve the
1790historical information.
1791
1792
f7b63901 1793Exim version 4.50
495ae4b0
PH
1794-----------------
1795
5fe762f6
PH
1796 1. Minor wording change to the doc/README.SIEVE file.
1797
139059f6 1798 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1799 computation of the current number of files was incorrect.
495ae4b0 1800
7086e875
PH
1801 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1802 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1803 place.
1804
35af9f61
PH
1805 4. Give more explanation in the error message when the command for a transport
1806 filter fails to execute.
1807
b668c215
PH
1808 5. There are several places where Exim runs a non-Exim command in a
1809 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1810 was being done only for the command run by the queryprogram router. It is
1811 now done for all such subprocesses. The other cases are: ${run, transport
1812 filters, and the commands run by the lmtp and pipe transports.
1813
a494b1e1
PH
1814 6. Added CONFIGURE_GROUP build-time option.
1815
1816 7. Some older OS have a limit of 256 on the maximum number of file
1817 descriptors. Exim was using setrlimit() to set 1000 as a large value
1818 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1819 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1820
c5fcb476
PH
1821 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1822 was an oversight, and furthermore, ever since the addition of extra
1823 controls (e.g. 4.43/32), the checks on when to allow different forms of
1824 "control" were broken. There should now be diagnostics for all cases when a
1825 control that does not make sense is encountered.
1826
69358f02
PH
1827 9. Added the /retain_sender option to "control=submission".
1828
5be20824
PH
182910. $recipients is now available in the predata ACL (oversight).
1830
eb2c0248
PH
183111. Tidy the search cache before the fork to do a delivery from a message
1832 received from the command line. Otherwise the child will trigger a lookup
1833 failure and thereby defer the delivery if it tries to use (for example) a
1834 cached ldap connection that the parent has called unbind on.
1835
2a3eea10
PH
183612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1837 of $address_data from the recipient verification was clobbered by the
1838 sender verification.
1839
184013. The value of address_data from a sender verification is now available in
1841 $sender_address_data in subsequent conditions in the ACL statement.
1842
23c7ff99
PH
184314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1844
4deaf07d
PH
184515. Added a new option "connect=<time>" to callout options, to set a different
1846 connection timeout.
1847
926e1192
PH
184816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1849 was its contents. (It was OK if the option was not defined at all.)
1850
650edc6f
PH
185117. A "Completed" log line is now written for messages that are removed from
1852 the spool by the -Mrm option.
1853
2c7db3f5
PH
185418. New variables $sender_verify_failure and $recipient_verify_failure contain
1855 information about exactly what failed.
1856
3d235903
PH
185719. Added -dd to debug only the daemon process.
1858
7c7ad977
PH
185920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1860 handles timeouts, both on the server side and network timeouts. Renamed the
1861 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1862
981756db
PH
186321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1864 It is now set to "smtps".
1865
d4eb88df
PH
186622. $host_address is now set to the target address during the checking of
1867 ignore_target_hosts.
1868
186923. When checking ignore_target_hosts for an ipliteral router, no host name was
1870 being passed; this would have caused $sender_host_name to have been used if
1871 matching the list had actually called for a host name (not very likely,
1872 since this list is usually IP addresses). A host name is now passed as
1873 "[x.x.x.x]".
1874
7d468ab8
PH
187524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1876 code that specifies a non-restarting handler (typically sigaction() in
1877 modern systems) in an attempt to fix a rare and obscure crash bug.
1878
187925. Narrowed the window for a race in the daemon that could cause it to ignore
1880 SIGCHLD signals. This is not a major problem, because they are used only to
1881 wake it up if nothing else does.
1882
62c0818f
PH
188326. A malformed maildirsize file could cause Exim to calculate negative values
1884 for the mailbox size or file count. Odd effects could occur as a result.
1885 The maildirsize information is now recalculated if the size or filecount
1886 end up negative.
1887
26034054
PH
188827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1889 support for a long time. Removed HAVE_SYS_VFS_H.
1890
af66f652
PH
189128. Installed the latest version of exipick from John Jetmore.
1892
90af77f4
PH
189329. In an address list, if the pattern was not a regular expression, an empty
1894 subject address (from a bounce message) matched only if the pattern was an
1895 empty string. Non-empty patterns were not even tested. This was the wrong
1896 because it is perfectly reasonable to use an empty address as part of a
1897 database query. An empty address is now tested by patterns that are
1898 lookups. However, all the other forms of pattern expect the subject to
1899 contain a local part and a domain, and therefore, for them, an empty
1900 address still always fails if the pattern is not itself empty.
1901
d8ef3577
PH
190230. Exim went into a mad DNS loop when attempting to do a callout where the
1903 host was specified on an smtp transport, and looking it up yielded more
1904 than one IP address.
1905
5cb8cbc6
PH
190631. Re-factored the code for checking spool and log partition space into a
1907 function that finds that data and another that does the check. The former
1908 is then used to implement four new variables: $spool_space, $log_space,
1909 $spool_inodes, and $log_inodes.
1910
14702f5b
PH
191132. The RFC2047 encoding function was originally intended for short strings
1912 such as real names; it was not keeping to the 75-character limit for
1913 encoded words that the RFC imposes. It now respects the limit, and
1914 generates multiple encoded words if necessary. To be on the safe side, I
1915 have increased the buffer size for the ${rfc2047: expansion operator from
1916 1024 to 2048 bytes.
1917
063b1e99
PH
191833. It is now permitted to omit both strings after an "if" condition; if the
1919 condition is true, the result is "true". As before, when the second string
1920 is omitted, a false condition yields an empty string. This makes it less
1921 cumbersome to write custom ACL and router conditions.
1922
652e1b65
PH
192334. Failure to deliver a bounce message always caused it to be frozen, even if
1924 there was an errors_to setting on the router. The errors_to setting is now
1925 respected.
1926
6f0c9a4f
PH
192735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1928 canonical form (fully expanded) before being placed in
1929 $sender_host_address.
1930
33397d19
PH
193136. The table in the code that translates DNS record types into text (T_A to
1932 "A" for instance) was missing entries for NS and CNAME. It is just possible
1933 that this could have caused confusion if both these types were looked up
1934 for the same domain, because the text type is used as part of Exim's
1935 per-process caching. But the chance of anyone hitting this buglet seems
1936 very small.
1937
7bb56e1f
PH
193837. The dnsdb lookup has been extended in a number of ways.
1939
1940 (1) There is a new type, "zns", which walks up the domain tree until it
1941 finds some nameserver records. It should be used with care.
1942
ea3bc19b
PH
1943 (2) There is a new type, "mxh", which is like "mx" except that it returns
1944 just the host names, not the priorities.
1945
1946 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1947 looked up. The behaviour when one of the lookups defers can be
1948 controlled by a keyword.
7bb56e1f 1949
ea3bc19b 1950 (4) It is now possible to specify the separator character for use when
7bb56e1f 1951 multiple records are returned.
33397d19 1952
0bcb2a0e
PH
195338. The dnslists ACL condition has been extended: it is now possible to supply
1954 a list of IP addresses and/or domains to be looked up in a particular DNS
1955 domain.
1956
2ac0e484
PH
195739. Added log_selector=+queue_time_overall.
1958
4e1fde53
PH
195940. When running the queue in the test harness, wait just a tad after forking a
1960 delivery process, to get repeatability of debugging output.
1961
de365ded
PH
196241. Include certificate and key file names in error message when GnuTLS fails
1963 to set them up, because the GnuTLS error message doesn't include the name
1964 of the failing file when there is a problem reading it.
1965
f05da2e8
PH
196642. Allow both -bf and -bF in the same test run.
1967
d6453af2
PH
196843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1969
f7b63901
PH
197044. The "Exiscan patch" is now merged into the mainline Exim source.
1971
197245. Sometimes the final signoff response after QUIT could fail to get
1973 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1974 < 0 before doing a fflush(). This bug looks as though it goes back to the
1975 introduction of TLS in release 3.20, but "sometimes" must have been rare
1976 because the tests only now provoked it.
1977
a444213a
PH
197846. Reset the locale to "C" after calling embedded Perl, in case it was changed
1979 (this can affect the format of dates).
1980
0ec020ea
PH
198147. exim_tidydb, when checking for the continued existence of a message for
1982 which it has found a message-specific retry record, was not finding
1983 messages that were in split spool directories. Consequently, it was
1984 deleting retry records that should have stayed in existence.
1985
b1206957
PH
198648. Steve fixed some bugs in eximstats.
1987
198849. The SPA authentication driver was not abandoning authentication and moving
1989 on to the next authenticator when an expansion was forced to fail,
1990 contradicting the general specification for all authenticators. Instead it
1991 was generating a temporary error. It now behaves as specified.
1992
26dd5a95
PH
199350. The default ordering of permitted cipher suites for GnuTLS was pessimal
1994 (the order specifies the preference for clients). The order is now AES256,
1995 AES128, 3DES, ARCFOUR128.
1996
343b2385
PH
199751. Small patch to Sieve code - explicitly set From: when generating an
1998 autoreply.
1999
1c5466b9
PH
200052. Exim crashed if a remote delivery caused a very long error message to be
2001 recorded - for instance if somebody sent an entire SpamAssassin report back
2002 as a large number of 550 error lines. This bug was coincidentally fixed by
2003 increasing the size of one of Exim's internal buffers (big_buffer) that
2004 happened as part of the Exiscan merge. However, to be on the safe side, I
2005 have made the code more robust (and fixed the comments that describe what
2006 is going on).
2007
55ee9ee3
PH
200853. Now that there can be additional text after "Completed" in log lines (if
2009 the queue_time_overall log selector is set), a one-byte patch to exigrep
2010 was needed to allow it to recognize "Completed" as not the last thing in
2011 the line.
2012
d38f8232
PH
201354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2014 patch that reportedly fixes this has been added. I am not expert enough to
2015 create a test for it. This is what the patch creator wrote:
2016
2017 "I found a little strange behaviour of ldap code when working with
2018 Windows 2003 AD Domain, where users was placed in more than one
2019 Organization Units. When I tried to give exim partial DN, the exit code
2020 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2021 But simultaneously result of request was absolutely normal ldap result,
2022 so I produce this patch..."
2023
3295e65b
PH
2024 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2025 REFERENCE, so I have modified the code to exclude the patch when that macro
2026 is not defined.
2027
7102e136
PH
202855. Some experimental protocols are using DNS PTR records for new purposes. The
2029 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2030 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2031 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2032 CAN-2005-0021
7102e136 2033
3ca0ba97
PH
203456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2035
c2bcbe20
PH
203657. Double the size of the debug message buffer (to 2048) so that more of very
2037 long debug lines gets shown.
2038
18ce445d
PH
203958. The exicyclog utility now does better if the number of log files to keep
2040 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2041
1f5b4c3d
PH
204259. Two changes related to the smtp_active_hostname option:
2043
2044 (1) $smtp_active_hostname is now available as a variable.
2045 (2) The default for smtp_banner uses $smtp_active_hostname instead
2046 of $primary_hostname.
2047
b975ba52
PH
204860. The host_aton() function is supposed to be passed a string that is known
2049 to be a valid IP address. However, in the case of IPv6 addresses, it was
2050 not checking this. This is a hostage to fortune. Exim now panics and dies
2051 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2052 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2053 components; fortuitously, this particular loophole had already been fixed
2054 by change 4.50/55 above.
2055
2056 If there are any other similar loopholes, the new check in host_aton()
2057 itself should stop them being exploited. The report I received stated that
2058 data on the command line could provoke the exploit when Exim was running as
2059 exim, but did not say which command line option was involved. All I could
2060 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2061 running as the user.
ea3a6f44 2062 CAN-2005-0021
85b87bc2
PH
2063
206461. There was a buffer overflow vulnerability in the SPA authentication code
2065 (which came originally from the Samba project). I have added a test to the
2066 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2067 CAN-2005-0022
b975ba52 2068
17ffcae7
PH
206962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2070 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2071
d95f9fdb
PH
207263. The daemon start-up calls getloadavg() while still root for those OS that
2073 need the first call to be done as root, but it missed one case: when
2074 deliver_queue_load_max is set with deliver_drop_privilege. This is
2075 necessary for the benefit of the queue runner, because there is no re-exec
2076 when deliver_drop_privilege is set.
2077
86b8287f
PH
207864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2079 This has been fixed.
2080
60dc5e56
PH
208165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2082 was in use, was not putting the data itself into the right store pool;
2083 consequently, it could be overwritten for a subsequent message in the same
2084 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2085 the caching.)
2086
533244af
PH
208766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2088
a5a28604
PH
208967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2090 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2091 the function were treating the return as a boolean value, which happened to
2092 work because 0=false and not-0=true, but is not correct code.
2093
7e634d24
PH
209468. The host_aton() function was not handling scoped IPv6 addresses (those
2095 with, for example, "%eth0" on the end) correctly.
2096
3e11c26b
PH
209769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2098 negated items (that is, ~something) in unsigned ints. Some compilers
2099 apparently mutter when there is no cast.
2100
6729cf78
PH
210170. If an address verification called from an ACL failed, and did not produce a
2102 user-specific message (i.e. there was only a "system" message), nothing was
2103 put in $acl_verify_message. In this situation, it now puts the system
2104 message there.
2105
00f00ca5
PH
210671. Change 4.23/11 added synchronization checking at the start of an SMTP
2107 session; change 4.31/43 added the unwanted input to the log line - except
2108 that it did not do this in the start of session case. It now does.
2109
c9bdd01c
PH
211072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2111 This is wrong and can cause the other end to generate a synchronization
2112 error if it is another Exim or anything else that does the synchronization
2113 check. A QUIT command is no longer sent after a timeout.
2114
d43194df
PH
211573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2116 during host lookups.
2117
fe5b5d0b
PH
211874. The defer_ok option of callout verification was not working if it was used
2119 when verifying addresses in header lines, that is, for this case:
2120
2121 verify = header_sender/callout=defer_ok
2122
76a2d7ba
PH
212375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2124 those file descriptors could be used for SMTP connections. If anything
2125 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2126 could be sent to the SMTP client, causing chaos. The daemon now opens
2127 stdin, stdout, and stderr to /dev/null when it puts itself into the
2128 background.
2129
213076. Arrange for output from Perl's "warn" command to be written to Exim's main
2131 log by default. The user can override this with suitable Perl magic.
2132
04f7d5b9
PH
213377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2134 the log message when discard triggers, was not working for the DATA ACL or
2135 for the non-SMTP ACL.
2136
bc60667e
PH
213778. Error message wording change in sieve.c.
2138
bb6e88ff
PH
213979. If smtp_accept_max_per_host was set, the number of connections could be
2140 restricted to fewer than expected, because the daemon was trying to set up
2141 a new connection before checking whether the processes handling previous
2142 connections had finished. The check for completed processes is now done
2143 earlier. On busy systems, this bug wouldn't be noticed because something
2144 else would have woken the daemon, and it would have reaped the completed
2145 process earlier.
2146
1e70f85b
PH
214780. If a message was submitted locally by a user whose login name contained one
2148 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2149 It caused a spool format error. I have fixed the spool reading code. A
2150 related problem was that the "from" clause in the Received: line became
2151 illegal because of the space(s). It is now covered by ${quote_local_part.
2152
215381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2154 tables).
2155
4e01f9d6
PH
215682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2157
1ee1cef2
PH
215883. Patch from Sieve maintainer to fix unterminated string problem in
2159 "vacation" handling.
2160
6e2b4ccc
PH
216184. Some minor changes to the Linux configuration files to help with other
2162 OS variants using glibc.
2163
8e669ac1
PH
216485. One more patch for Sieve to update vacation handling to latest spec.
2165
495ae4b0 2166
bbe902f0
PH
2167----------------------------------------------------
2168See the note above about the 4.44 and 4.50 releases.
2169----------------------------------------------------
2170
2171
2172Exim version 4.44
2173-----------------
2174
2175 1. Change 4.43/35 introduced a bug that caused file counts to be
2176 incorrectly computed when quota_filecount was set in an appendfile
2177 transport
2178
2179 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2180 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2181 place.
2182
2183 3. Give more explanation in the error message when the command for a transport
2184 filter fails to execute.
2185
2186 4. There are several places where Exim runs a non-Exim command in a
2187 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2188 was being done only for the command run by the queryprogram router. It is
2189 now done for all such subprocesses. The other cases are: ${run, transport
2190 filters, and the commands run by the lmtp and pipe transports.
2191
2192 5. Some older OS have a limit of 256 on the maximum number of file
2193 descriptors. Exim was using setrlimit() to set 1000 as a large value
2194 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2195 systems. I've change it so that if it can't get 1000, it tries for 256.
2196
2197 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2198 was an oversight, and furthermore, ever since the addition of extra
2199 controls (e.g. 4.43/32), the checks on when to allow different forms of
2200 "control" were broken. There should now be diagnostics for all cases when a
2201 control that does not make sense is encountered.
2202
2203 7. $recipients is now available in the predata ACL (oversight).
2204
2205 8. Tidy the search cache before the fork to do a delivery from a message
2206 received from the command line. Otherwise the child will trigger a lookup
2207 failure and thereby defer the delivery if it tries to use (for example) a
2208 cached ldap connection that the parent has called unbind on.
2209
2210 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2211 of $address_data from the recipient verification was clobbered by the
2212 sender verification.
2213
221410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2215 was its contents. (It was OK if the option was not defined at all.)
2216
221711. A "Completed" log line is now written for messages that are removed from
2218 the spool by the -Mrm option.
2219
222012. $host_address is now set to the target address during the checking of
2221 ignore_target_hosts.
2222
222313. When checking ignore_target_hosts for an ipliteral router, no host name was
2224 being passed; this would have caused $sender_host_name to have been used if
2225 matching the list had actually called for a host name (not very likely,
2226 since this list is usually IP addresses). A host name is now passed as
2227 "[x.x.x.x]".
2228
222914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2230 code that specifies a non-restarting handler (typically sigaction() in
2231 modern systems) in an attempt to fix a rare and obscure crash bug.
2232
223315. Narrowed the window for a race in the daemon that could cause it to ignore
2234 SIGCHLD signals. This is not a major problem, because they are used only to
2235 wake it up if nothing else does.
2236
223716. A malformed maildirsize file could cause Exim to calculate negative values
2238 for the mailbox size or file count. Odd effects could occur as a result.
2239 The maildirsize information is now recalculated if the size or filecount
2240 end up negative.
2241
224217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2243 support for a long time. Removed HAVE_SYS_VFS_H.
2244
ea3a6f44 224518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2246
224719. Allow an empty sender to be matched against a lookup in an address list.
2248 Previously the only cases considered were a regular expression, or an
2249 empty pattern.
2250
225120. Exim went into a mad DNS lookup loop when doing a callout where the
2252 host was specified on the transport, if the DNS lookup yielded more than
2253 one IP address.
2254
ea3a6f44
NM
225521. The RFC2047 encoding function was originally intended for short strings
2256 such as real names; it was not keeping to the 75-character limit for
2257 encoded words that the RFC imposes. It now respects the limit, and
2258 generates multiple encoded words if necessary. To be on the safe side, I
2259 have increased the buffer size for the ${rfc2047: expansion operator from
2260 1024 to 2048 bytes.
bbe902f0 2261
ea3a6f44
NM
226222. Failure to deliver a bounce message always caused it to be frozen, even if
2263 there was an errors_to setting on the router. The errors_to setting is now
2264 respected.
bbe902f0
PH
2265
226623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2267 canonical form (fully expanded) before being placed in
2268 $sender_host_address.
2269
227024. Updated eximstats to version 1.33
2271
ea3a6f44
NM
227225. Include certificate and key file names in error message when GnuTLS fails
2273 to set them up, because the GnuTLS error message doesn't include the name
2274 of the failing file when there is a problem reading it.
bbe902f0
PH
2275
227626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2277 As per change 25.
bbe902f0 2278
ea3a6f44
NM
227927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2280 (this can affect the format of dates).
bbe902f0 2281
ea3a6f44
NM
228228. exim_tidydb, when checking for the continued existence of a message for
2283 which it has found a message-specific retry record, was not finding
2284 messages that were in split spool directories. Consequently, it was
2285 deleting retry records that should have stayed in existence.
bbe902f0
PH
2286
228729. eximstats updated to version 1.35
2288 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2289 1.35 - bugfix such that pie charts by volume are generated correctly
2290
ea3a6f44
NM
229130. The SPA authentication driver was not abandoning authentication and moving
2292 on to the next authenticator when an expansion was forced to fail,
2293 contradicting the general specification for all authenticators. Instead it
2294 was generating a temporary error. It now behaves as specified.
bbe902f0 2295
ea3a6f44
NM
229631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2297 (the order specifies the preference for clients). The order is now AES256,
2298 AES128, 3DES, ARCFOUR128.
bbe902f0 2299
ea3a6f44
NM
230031. Small patch to Sieve code - explicitly set From: when generating an
2301 autoreply.
bbe902f0 2302
ea3a6f44
NM
230332. Exim crashed if a remote delivery caused a very long error message to be
2304 recorded - for instance if somebody sent an entire SpamAssassin report back
2305 as a large number of 550 error lines. This bug was coincidentally fixed by
2306 increasing the size of one of Exim's internal buffers (big_buffer) that
2307 happened as part of the Exiscan merge. However, to be on the safe side, I
2308 have made the code more robust (and fixed the comments that describe what
2309 is going on).
bbe902f0 2310
ea3a6f44
NM
231133. Some experimental protocols are using DNS PTR records for new purposes. The
2312 keys for these records are domain names, not reversed IP addresses. The
2313 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2314 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2315 CAN-2005-0021
2316
ea3a6f44
NM
231734. The host_aton() function is supposed to be passed a string that is known
2318 to be a valid IP address. However, in the case of IPv6 addresses, it was
2319 not checking this. This is a hostage to fortune. Exim now panics and dies
2320 if the condition is not met. A case was found where this could be provoked
2321 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2322 components; fortuitously, this particular loophole had already been fixed
2323 by change 4.50/55 or 4.44/33 above.
2324
2325 If there are any other similar loopholes, the new check in host_aton()
2326 itself should stop them being exploited. The report I received stated that
2327 data on the command line could provoke the exploit when Exim was running as
2328 exim, but did not say which command line option was involved. All I could
2329 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2330 running as the user.
bbe902f0
PH
2331 CAN-2005-0021
2332
ea3a6f44
NM
233335. There was a buffer overflow vulnerability in the SPA authentication code
2334 (which came originally from the Samba project). I have added a test to the
2335 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2336 CAN-2005-0022
2337
ea3a6f44
NM
233836. The daemon start-up calls getloadavg() while still root for those OS that
2339 need the first call to be done as root, but it missed one case: when
2340 deliver_queue_load_max is set with deliver_drop_privilege. This is
2341 necessary for the benefit of the queue runner, because there is no re-exec
2342 when deliver_drop_privilege is set.
bbe902f0 2343
ea3a6f44
NM
234437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2345 was in use, was not putting the data itself into the right store pool;
2346 consequently, it could be overwritten for a subsequent message in the same
2347 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2348 the caching.)
bbe902f0 2349
ea3a6f44
NM
235038. Sometimes the final signoff response after QUIT could fail to get
2351 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2352 < 0 before doing a fflush(). This bug looks as though it goes back to the
2353 introduction of TLS in release 3.20, but "sometimes" must have been rare
2354 because the tests only now provoked it.
bbe902f0
PH
2355
2356
495ae4b0
PH
2357Exim version 4.43
2358-----------------
2359
2360 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2361 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2362 Now it returns an integer. A number of calls were still expecting a T/F
2363 return. Fortuitously, in all cases, the tests worked in OK situations,
2364 which is the norm. However, things would have gone wrong on any write
2365 failures on the smtp file descriptor. This function is used when sending
2366 messages over SMTP and also when doing verify callouts.
2367
2368 2. When Exim is called to do synchronous delivery of a locally submitted
2369 message (the -odf or -odi options), it no longer closes stderr before doing
2370 the delivery.
2371
2372 3. Implemented the mua_wrapper option.
2373
2374 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2375
2376 5. Implemented the functions header_remove(), header_testname(),
2377 header_add_at_position(), and receive_remove_recipient(), and exported them
2378 to local_scan().
2379
2380 6. If an ACL "warn" statement specified the addition of headers, Exim already
2381 inserted X-ACL-Warn: at the start if there was no header name. However, it
2382 was not making this test for the second and subsequent header lines if
2383 there were newlines in the string. This meant that an invalid header could
2384 be inserted if Exim was badly configured.
2385
2386 7. Allow an ACL "warn" statement to add header lines at the start or after all
2387 the Received: headers, as well as at the end.
2388
2389 8. Added the rcpt_4xx retry error code.
2390
2391 9. Added postmaster_mailfrom=xxx to callout verification option.
2392
239310. Added mailfrom=xxxx to the callout verification option, for verify=
2394 header_sender only.
2395
239611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2397 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2398
239912. Inserted some casts to stop certain compilers warning when using pointer
2400 differences as field lengths or precisions in printf-type calls (mostly
2401 affecting debugging statements).
2402
240313. Added optional readline() support for -be (dynamically loaded).
2404
240514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2406 same clock tick as a message's arrival, so that its received time was the
2407 same as the "first fail" time on the retry record, and that message
2408 remained on the queue past the ultimate address timeout, every queue runner
2409 would try a delivery (because it was past the ultimate address timeout) but
2410 after another failure, the ultimate address timeout, which should have then
2411 bounced the address, did not kick in. This was a "< instead of <=" error;
2412 in most cases the first failure would have been in the next clock tick
2413 after the received time, and all would be well.
2414
241515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2416 being recognized when the domain list was tested by the match_domain
2417 condition in an expansion string.
2418
241916. Added the ${str2b64: operator.
2420
242117. Exim was always calling setrlimit() to set a large limit for the number of
2422 processes, without checking whether the existing limit was already
2423 adequate. (It did check for the limit on file descriptors.) Furthermore,
2424 errors from getrlimit() and setrlimit() were being ignored. Now they are
2425 logged to the main and panic logs, but Exim does carry on, to try to do its
2426 job under whatever limits there are.
2427
242818. Imported PCRE 5.0.
2429
243019. Trivial typo in log message " temporarily refused connection" (the leading
2431 space).
2432
243320. If the log selector return_path_on_delivery was set and an address was
2434 redirected to /dev/null, the delivery process crashed because it assumed
2435 that a return path would always be set for a "successful" delivery. In this
2436 case, the whole delivery is bypassed as an optimization, and therefore no
2437 return path is set.
2438
243921. Internal re-arrangement: the function for sending a challenge and reading
2440 a response while authentication was assuming a zero-terminated challenge
2441 string. It's now changed to take a pointer and a length, to allow for
2442 binary data in such strings.
2443
244422. Added the cyrus_sasl authenticator (code supplied by MBM).
2445
244623. Exim was not respecting finduser_retries when seeking the login of the
2447 uid under which it was called; it was always trying 10 times. (The default
2448 setting of finduser_retries is zero.) Also, it was sleeping after the final
2449 failure, which is pointless.
2450
245124. Implemented tls_on_connect_ports.
2452
245325. Implemented acl_smtp_predata.
2454
245526. If the domain in control=submission is set empty, Exim assumes that the
2456 authenticated id is a complete email address when it generates From: or
2457 Sender: header lines.
2458
245927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2460 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2461 chown and chgrp in /bin and hostname in /usr/bin.
2462
246328. Exim was keeping the "process log" file open after each use, just as it
2464 does for the main log. This opens the possibility of it remaining open for
2465 long periods when the USR1 signal hits a daemon. Occasional processlog
2466 errors were reported, that could have been caused by this. Anyway, it seems
2467 much more sensible not to leave this file open at all, so that is what now
2468 happens.
2469
247029. The long-running daemon process does not normally write to the log once it
2471 has entered its main loop, and it closes the log before doing so. This is
2472 so that log files can straightforwardly be renamed and moved. However,
2473 there are a couple of unusual error situations where the daemon does write
2474 log entries, and I had neglected to close the log afterwards.
2475
247630. The text of an SMTP error response that was received during a remote
2477 delivery was being truncated at 512 bytes. This is too short for some of
2478 the long messages that one sometimes sees. I've increased the limit to
2479 1024.
2480
248131. It is now possible to make retry rules that apply only when a message has a
2482 specific sender, in particular, an empty sender.
2483
248432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2485 it possible to be selective about when SMTP synchronization is enforced.
2486
248733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2488
248932. Implemented hosts_connection_nolog.
2490
249133. Added an ACL for QUIT.
2492
249334. Setting "delay_warning=" to disable warnings was not working; it gave a
2494 syntax error.
2495
249635. Added mailbox_size and mailbox_filecount to appendfile.
2497
249836. Added control = no_multiline_responses to ACLs.
2499
250037. There was a bug in the logic of the code that waits for the clock to tick
2501 in the case where the clock went backwards by a substantial amount such
2502 that the microsecond fraction of "now" was more than the microsecond
2503 fraction of "then" (but the whole seconds number was less).
2504
250538. Added support for the libradius Radius client library this is found on
2506 FreeBSD (previously only the radiusclient library was supported).
2507
2508
2509Exim version 4.42
2510-----------------
2511
2512 1. When certain lookups returned multiple values in the form name=value, the
2513 quoting of the values was not always being done properly. Specifically:
2514 (a) If the value started with a double quote, but contained no whitespace,
2515 it was not quoted.
2516 (b) If the value contained whitespace other than a space character (i.e.
2517 tabs or newlines or carriage returns) it was not quoted.
2518 This fix has been applied to the mysql and pgsql lookups by writing a
2519 separate quoting function and calling it from the lookup code. The fix
2520 should probably also be applied to nisplus, ibase and oracle lookups, but
2521 since I cannot test any of those, I have not disturbed their existing code.
2522
2523 2. A hit in the callout cache for a specific address caused a log line with no
2524 reason for rejecting RCPT. Now it says "Previous (cached) callout
2525 verification failure".
2526
2527 3. There was an off-by-one bug in the queryprogram router. An over-long
2528 return line was truncated at 256 instead of 255 characters, thereby
2529 overflowing its buffer with the terminating zero. As well as fixing this, I
2530 have increased the buffer size to 1024 (and made a note to document this).
2531
2532 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2533 when Exim is waiting for an SMTP response from a remote server, Exim
2534 restarts its select() call on the socket, thereby resetting its timeout.
2535 This is not a problem when such interrupts are rare. Somebody set up a cron
2536 job to run exiwhat every 2 minutes, which is less than the normal select()
2537 timeout (5 or 10 minutes). This meant that the select() timeout never
2538 kicked in because it was always reset. I have fixed this by comparing the
2539 time when an interrupt arrives with the time at the start of the first call
2540 to select(). If more time than the timeout has elapsed, the interrupt is
2541 treated as a timeout.
2542
2543 5. Some internal re-factoring in preparation for the addition of Sieve
2544 extensions (by MH). In particular, the "personal" test is moved to a
2545 separate function, and given an option for scanning Cc: and Bcc: (which is
2546 not set for Exim filters).
2547
2548 6. When Exim created an email address using the login of the caller as the
2549 local part (e.g. when creating a From: or Sender: header line), it was not
2550 quoting the local part when it contained special characters such as @.
2551
2552 7. Installed new OpenBSD configuration files.
2553
2554 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2555 try to make them clearer.
2556
2557 9. Callout options, other than the timeout value, were being ignored when
2558 verifying sender addresses in header lines. For example, when using
2559
2560 verify = header_sender/callout=no_cache
2561
2562 the cache was (incorrectly) being used.
2563
256410. Added a missing instance of ${EXE} to the exim_install script; this affects
2565 only the Cygwin environment.
2566
256711. When return_path_on_delivery was set as a log selector, if different remote
2568 addresses in the same message used different return paths and parallel
2569 remote delivery occurred, the wrong values would sometimes be logged.
2570 (Whenever a remote delivery process finished, the return path value from
2571 the most recently started remote delivery process was logged.)
2572
257312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2574 lines when AUTH and/or TLS are in use. This is the "received protocol"
2575 field. Exim used to use "asmtp" for authenticated SMTP, without any
2576 indication (in the protocol name) for TLS use. Now it follows the RFC and
2577 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2578 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2579 names appear in log lines as well as in Received: header lines.
2580
258113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2582 extensions, and comparison tests, and to fix some bugs.
2583
258414. Changes to the "personal" filter test:
2585
2586 (1) The test was buggy in that it was just doing the equivalent of
2587 "contains" tests on header lines. For example, if a user's address was
2588 anne@some.where, the "personal" test would incorrectly be true for
2589
2590 To: susanne@some.where
2591
2592 This test is now done by extracting each address from the header in turn,
2593 and checking the entire address. Other tests that are part of "personal"
2594 are now done using regular expressions (for example, to check local parts
2595 of addresses in From: header lines).
2596
2597 (2) The list of non-personal local parts in From: addresses has been
2598 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2599 taken from the Sieve specification recommendations.
2600
2601 (3) If the message contains any header line starting with "List-" it is
2602 treated as non-personal.
2603
2604 (4) The test for "circular" in the Subject: header line has been removed
2605 because it now seems ill-conceived.
2606
260715. Minor typos in src/EDITME comments corrected.
2608
260916. Installed latest exipick from John Jetmore.
2610
261117. If headers_add on a router specified a text string that was too long for
2612 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2613 of string_sprintf() is now avoided.
2614
261518. $message_body_size was not set (it was always zero) when running the DATA
2616 ACL and the local_scan() function.
2617
261819. For the "mail" command in an Exim filter, no default was being set for
2619 the once_repeat time, causing a random time value to be used if "once" was
2620 specified. (If the value happened to be <= 0, no repeat happened.) The
2621 default is now 0s, meaning "never repeat". The "vacation" command was OK
2622 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2623 (I found it when inspecting the code).
2624
262520. There is now an overall timeout for performing a callout verification. It
2626 defaults to 4 times the callout timeout, which applies to individual SMTP
2627 commands during the callout. The overall timeout applies when there is more
2628 than one host that can be tried. The timeout is checked before trying the
2629 next host. This prevents very long delays if there are a large number of
2630 hosts and all are timing out (e.g. when the network connections are timing
2631 out). The value of the overall timeout can be changed by specifying an
2632 additional sub-option for "callout", called "maxwait". For example:
2633
2634 verify = sender/callout=5s,maxwait=20s
2635
263621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2637 to the end before writing, but this should make it even safer).
2638
263922. Exim was forgetting that it had advertised PIPELINING for the second and
2640 subsequent messages on an SMTP connection. It was also not resetting its
2641 memory on STARTTLS and an internal HELO.
2642
264323. When Exim logs an SMTP synchronization error within a session, it now
2644 records whether PIPELINING has been advertised or not.
2645
264624. Added 3 instances of "(long int)" casts to time_t variables that were being
2647 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2648 rather than long int.
2649
265025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2651
265226. Added the never_mail option to autoreply.
2653
2654
2655Exim version 4.41
2656-----------------
2657
2658 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2659 crash if the getsockname() call failed; this can happen if a connection is
2660 closed very soon after it is established. The problem was simply in the
2661 order in which certain operations were done, causing Exim to try to write
2662 to the SMTP stream before it had set up the file descriptor. The bug has
2663 been fixed by making things happen in the correct order.
2664
2665
2666Exim version 4.40
2667-----------------
2668
2669 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2670 before the connection was closed, thus losing the rejection response.
2671
2672 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2673 some early Solaris releases, but causes trouble in current releases where
2674 socklen_t is defined.
2675
2676 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2677 always exist.
2678
2679 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2680 configured.
2681
2682 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2683 that releasing the top of it at the end releases what was used for sub-
2684 expansions (unless the block got too big). However, discard this block if
2685 the first thing is a variable or header, so that we can use its block when
2686 it is dynamic (useful for very large $message_headers, for example).
2687
2688 6. Lookups now cache *every* query, not just the most recent. A new, separate
2689 store pool is used for this. It can be recovered when all lookup caches are
2690 flushed. Lookups now release memory at the end of their result strings.
2691 This has involved some general refactoring of the lookup sources.
2692
2693 7. Some code has been added to the store_xxx() functions to reduce the amount
2694 of flapping under certain conditions.
2695
2696 8. log_incoming_interface used to affect only the <= reception log lines. Now
2697 it causes the local interface and port to be added to several more SMTP log
2698 lines, for example "SMTP connection from", and rejection lines.
2699
2700 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2701
270210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2703
270411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2705 could be overwritten at the end of the current message (or the start of a
2706 new message if it was set in a HELO ACL). The value is now preserved for
2707 the duration of the SMTP connection.
2708
270912. If a transport had a headers_rewrite setting, and a matching header line
2710 contained an unqualified address, that address was qualified, even if it
2711 did not match any rewriting rules. The underlying bug was that the values
2712 of the flags that permit the existence of unqualified sender and recipient
2713 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2714 non-local messages, and by -bnq for local messages) were not being
2715 preserved with the message after it was received.
2716
271713. When Exim was logging an SMTP synchronization error, it could sometimes log
2718 "next input=" as part of the text comprising the host identity instead of
2719 the correct text. The code was using the same buffer for two different
2720 strings. However, depending on which order the printing function evaluated
2721 its arguments, the bug did not always show up. Under Linux, for example, my
2722 test suite worked just fine.
2723
272414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2725 doesn't work with some older versions of Perl. It has been changed to "my",
2726 which in any case is probably the better facility to use.
2727
272815. A really picky compiler found some instances of statements for creating
2729 error messages that either had too many or two few arguments for the format
2730 string.
2731
273216. The size of the buffer for calls to the DNS resolver has been increased
2733 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2734 for addresses that have a lot of PTR records. This alleviates a problem; it
2735 does not fully solve it.
2736
273717. A dnsdb lookup for PTR records that receives more data than will fit in the
2738 buffer now truncates the list and logs the incident, which is the same
2739 action as happens when Exim is looking up a host name and its aliases.
2740 Previously in this situation something unpredictable would happen;
2741 sometimes it was "internal error: store_reset failed".
2742
274318. If a server dropped the connection unexpectedly when an Exim client was
2744 using GnuTLS and trying to read a response, the client delivery process
2745 crashed while trying to generate an error log message.
2746
274719. If a "warn" verb in an ACL added multiple headers to a message in a single
2748 string, for example:
2749
2750 warn message = H1: something\nH2: something
2751
2752 the text was added as a single header line from Exim's point of view
2753 though it ended up OK in the delivered message. However, searching for the
2754 second and subsequent header lines using $h_h2: did not work. This has been
2755 fixed. Similarly, if a system filter added multiple headers in this way,
2756 the routers could not see them.
2757
275820. Expanded the error message when iplsearch is called with an invalid key to
2759 suggest using net-iplsearch in a host list.
2760
276121. When running tests using -bh, any delays imposed by "delay" modifiers in
2762 ACLs are no longer actually imposed (and a message to that effect is
2763 output).
2764
276522. If a "gecos" field in a passwd entry contained escaped characters, in
2766 particular, if it contained a \" sequence, Exim got it wrong when building
2767 a From: or a Sender: header from that name. A second bug also caused
2768 incorrect handling when an unquoted " was present following a character
2769 that needed quoting.
2770
277123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2772 was not being matched caselessly.
2773
277424. Arranged for all hyphens in the exim.8 source to be escaped with
2775 backslashes.
2776
277725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2778 properly. Recipient callout cache records were still being keyed to include
2779 the sender, even when use_sender was set false. This led to far more
2780 callouts that were necessary. The sender is no longer included in the key
2781 when use_sender is false.
2782
278326. Added "control = submission" modifier to ACLs.
2784
278527. Added the ${base62d: operator to decode base 62 numbers.
2786
278728. dnsdb lookups can now access SRV records.
2788
278929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2790 the configuration file.
2791
279230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2793 (-v) mode. This makes the output for a verbose queue run more intelligible.
2794
279531. Added a use_postmaster feature to recipient callouts.
2796
279732. Added the $body_zerocount variable, containing the number of binary zero
2798 bytes in the message body.
2799
280033. The time of last modification of the "new" subdirectory is now used as the
2801 "mailbox time last read" when there is a quota error for a maildir
2802 delivery.
2803
280434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2805
280635. Added +ignore_unknown as a special item in host lists.
2807
280836. Code for decoding IPv6 addresses in host lists is now included, even if
2809 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2810 address was recognized as an IP address, but was then not correctly decoded
2811 into binary, causing unexpected and incorrect effects when compared with
2812 another IP address.
2813
2814
2815Exim version 4.34
2816-----------------
2817
2818 1. Very minor rewording of debugging text in manualroute to say "list of
2819 hosts" instead of "hostlist".
2820
2821 2. If verify=header_syntax was set, and a header line with an unqualified
2822 address (no domain) and a large number of spaces between the end of the
2823 name and the colon was received, the reception process suffered a buffer
2824 overflow, and (when I tested it) crashed. This was caused by some obsolete
2825 code that should have been removed. The fix is to remove it!
2826
2827 3. When running in the test harness, delay a bit after writing a bounce
2828 message to get a bit more predictability in the log output.
2829
2830 4. Added a call to search_tidyup() just before forking a reception process. In
2831 theory, someone could use a lookup in the expansion of smtp_accept_max_
2832 per_host which, without the tidyup, could leave open a database connection.
2833
2834 5. Added the variables $recipient_data and $sender_data which get set from a
2835 lookup success in an ACL "recipients" or "senders" condition, or a router
2836 "senders" option, similar to $domain_data and $local_part_data.
2837
2838 6. Moved the writing of debug_print from before to after the "senders" test
2839 for routers.
2840
2841 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2842 problems for message scanning, either using a data ACL, or using
2843 local_scan() because the Received: header was not generated till after they
2844 were called (in order to set the time as the time of reception completion).
2845 I have revised the way this works. The header is now generated after the
2846 body is received, but before the ACL or local_scan() are called. After they
2847 are run, the timestamp in the header is updated.
2848
2849
2850Exim version 4.33
2851-----------------
2852
2853 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2854 before starting a queue runner without re-exec. This happened only when
2855 deliver_drop_privilege was set or when the Exim user was set to root. The
2856 effect of the bug was that timeouts during subsequent deliveries caused
2857 crashes instead of being properly handled. The handler is now left at its
2858 default (and expected) setting.
2859
2860 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2861 message, again when deliver_drop_privilege is set or Exim is run as root.
2862 The bug described in (1) was not present in this case, but the tidying up
2863 of the other signals was missing. I have made the two cases consistent.
2864
2865 3. The ignore_target_hosts setting on a manualroute router was being ignored
2866 for hosts that were looked up using the /MX notation.
2867
2868 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2869 in domain lists.
2870
2871 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2872 operated on the sender address. After changing the $sender_address to <>
2873 for the sender address verify, Exim was re-instated it as the original
2874 (before rewriting) address, but remembering that it had rewritten it, so it
2875 wasn't rewriting it again. This bug also had the effect of breaking the
2876 sender address verification caching when the sender address was rewritten.
2877
2878 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2879 This has been changed so that if the ip literal address matches
2880 ignore_target_hosts, the router declines.
2881
2882 7. Added expansion conditions match_domain, match_address, and match_local_
2883 part (NOT match_host).
2884
2885 8. The placeholder for the Received: header didn't have a length field set.
2886
2887 9. Added code to Exim itself and to exim_lock to test for a specific race
2888 condition that could lead to file corruption when using MBX delivery. The
2889 issue is with the lockfile that is created in /tmp. If this file is removed
2890 after a process has opened it but before that process has acquired a lock,
2891 there is the potential for a second process to recreate the file and also
2892 acquire a lock. This could lead to two Exim processes writing to the file
2893 at the same time. The added code performs the same test as UW imapd; it
2894 checks after acquiring the lock that its file descriptor still refers to
2895 the same named file.
2896
289710. The buffer for building added header lines was of fixed size, 8192 bytes.
2898 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2899 when Exim is built.
2900
290111. Added the smtp_active_hostname option. If used, this will typically be made
2902 to depend on the incoming interface address. Because $interface_address is
2903 not set up until the daemon has forked a reception process, error responses
2904 that can happen earlier (such as "too many connections") no longer contain
2905 a host name.
2906
290712. If an expansion in a condition on a "warn" statement fails because a lookup
2908 defers, the "warn" statement is abandoned, and the next ACL statement is
2909 processed. Previously this caused the whole ACL to be aborted.
2910
291113. Added the iplsearch lookup type.
2912
291314. Added ident_timeout as a log selector.
2914
291515. Added tls_certificate_verified as a log selector.
2916
291716. Added a global option tls_require_ciphers (compare the smtp transport
2918 option of the same name). This controls incoming TLS connections.
2919
292017. I finally figured out how to make tls_require_ciphers do a similar thing
2921 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2922 before starting the TLS session.
2923
292418. Tabs are now shown as \t in -bP output.
2925
292619. If the log selector return_path_on_delivery was set, Exim crashed when
2927 bouncing a message because it had too many Received: header lines.
2928
292920. If two routers both had headers_remove settings, and the first one included
2930 a superfluous trailing colon, the final name in the first list and the
2931 first name in the second list were incorrectly joined into one item (with a
2932 colon in the middle).
2933
2934
2935Exim version 4.32
2936-----------------
2937
2938 1. Added -C and -D options to the exinext utility, mainly to make it easier
2939 to include in the automated testing, but these could be helpful when
2940 multiple configurations are in use.
2941
2942 2. The exinext utility was not formatting the output nicely when there was
2943 an alternate port involved in the retry record key, nor when there was a
2944 message id as well (for retries that were specific to a specific message
2945 and a specific host). It was also confused by IPv6 addresses, because of
2946 the additional colons they contain. I have fixed the IPv4 problem, and
2947 patched it up to do a reasonable job for IPv6.
2948
2949 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2950 delivery, the log line now contains "pipelined" if PIPELINING was used.
2951
2952 4. An SMTP transport process used to panic and die if the bind() call to set
2953 an explicit outgoing interface failed. This has been changed; it is now
2954 treated in the same way as a connect() failure.
2955
2956 5. A reference to $sender_host_name in the part of a conditional expansion
2957 that was being skipped was still causing a DNS lookup. This no longer
2958 occurs.
2959
2960 6. The def: expansion condition was not recognizing references to header lines
2961 that used bh_ and bheader_.
2962
2963 7. Added the _cache feature to named lists.
2964
2965 8. The code for checking quota_filecount in the appendfile transport was
2966 allowing one more file than it should have been.
2967
2968 9. For compatibility with Sendmail, the command line option
2969
2970 -prval:sval
2971
2972 is equivalent to
2973
2974 -oMr rval -oMs sval
2975
2976 and sets the incoming protocol and host name (for trusted callers). The
2977 host name and its colon can be omitted when only the protocol is to be set.
2978 Note the Exim already has two private options, -pd and -ps, that refer to
2979 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2980 "s", but I don't think that's a major issue.
2981
298210. A number of refactoring changes to the code, none of which should affect
2983 Exim's behaviour:
2984
2985 (a) The number of logging options was getting close to filling up the
2986 32-bit word that was used as a bit map. I have split them into two classes:
2987 those that are passed in the argument to log_write(), and those that are
2988 only ever tested independently outside of that function. These are now in
2989 separate 32-bit words, so there is plenty of room for expansion again.
2990 There is no change in the user interface or the logging behaviour.
2991
2992 (b) When building, for example, log lines, the code previously used a
2993 macro that called string_cat() twice, in order to add two strings. This is
2994 not really sufficiently general. Furthermore, there was one instance where
2995 it was actually wrong because one of the argument was used twice, and in
2996 one call a function was used. (As it happened, calling the function twice
2997 did not affect the overall behaviour.) The macro has been replaced by a
2998 function that can join an arbitrary number of extra strings onto a growing
2999 string.
3000
3001 (c) The code for expansion conditions now uses a table and a binary chop
3002 instead of a serial search (which was left over from when there were very
3003 few conditions). Also, it now recognizes conditions like "pam" even when
3004 the relevant support is not compiled in: a suitably worded error message is
3005 given if an attempt is made to use such a condition.
3006
300711. Added ${time_interval:xxxxx}.
3008
300912. A bug was causing one of the ddress fields not to be passed back correctly
3010 from remote delivery subprocesses. The field in question was not being
3011 subsequently used, so this caused to problems in practice.
3012
301313. Added new log selectors queue_time and deliver_time.
3014
301514. Might have fixed a bug in maildirsizefile handling that threw up
3016 "unexpected character" debug warnings, and recalculated the data
3017 unnecessarily. In any case, I expanded the warning message to give more
3018 information.
3019
302015. Added the message "Restricted characters in address" to the statements in
3021 the default ACL that block characters like @ and % in local parts.
3022
302316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3024 Three changes have been made:
3025
3026 (a) There was a serious bug; a negative response to MAIL caused the whole
3027 recipient domain to be cached as invalid, thereby blocking all messages
3028 to all local parts at the same domain, from all senders. This bug has
3029 been fixed. The domain is no longer cached after a negative response to
3030 MAIL if the sender used is not empty.
3031
3032 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3033 been restored.
3034
3035 (c) A new callout option, "use_sender" has been added for people who want
3036 the modified behaviour.
3037
3038
3039Exim version 4.31
3040-----------------
3041
3042 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3043 Larry Rosenman.
3044
3045 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3046 indeed breaks things for older releases.
3047
3048 3. Added additional logging to the case where there is a problem reading data
3049 from a filter that is running in a subprocess using a pipe, in order to
3050 try to track down a specific problem.
3051
3052 4. Testing facility fudge: when running in the test harness and attempting
3053 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3054 getting "No route to host". Convert this to a timeout.
3055
3056 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3057 warning.
3058
3059 6. Some OS don't have socklen_t but use size_t instead. This affects the
3060 fifth argument of getsockopt() amongst other things. This is now
3061 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3062 can be set for individual OS. I have set it for SunOS5, OSF1, and
3063 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3064 some earlier ones do not.
3065
3066 7. Change 4.30/15 was not doing the test caselessly.
3067
3068 8. The standard form for an IPv6 address literal was being rejected by address
3069 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3070 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3071 this, as well as the form without the "IPv6" on the front (but only when
3072 address literals are enabled, of course).
3073
3074 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3075
307610. Exim crashed if a message with an empty sender address specified by -f
3077 encountered a router with an errors_to setting. This could be provoked only
3078 by a command such as
3079
3080 exim -f "" ...
3081
3082 where an empty string was supplied; "<>" did not hit this bug.
3083
308411. Installed PCRE release 4.5.
3085
308612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3087 remained set. It is now erased.
3088
308913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3090 times from message ids (which are base 36 rather than the normal 62).
3091
309214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3093 were being counted as actual protocol errors, and logged if the log
3094 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3095 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3096 and DATA following a set of rejected RCPTs do not count as protocol errors.
3097 In other words, Exim assumes they were pipelined, though this may not
3098 actually be the case. Of course, in all cases the client gets an
3099 appropriate error code.
3100
310115. If a lookup fails in an ACL condition, a message about the failure may
3102 be available; it is used if testing the ACL cannot continue, because most
3103 such messages specify what the cause of the deferral is. However, some
3104 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3105 that caused an old message to be retained and used if a later statement
3106 caused a defer, replacing the real cause of the deferral.
3107
310816. If an IP address had so many PTR records that the DNS lookup buffer
3109 was not large enough to hold them, Exim could crash while trying to process
3110 the truncated data. It now detects and logs this case.
3111
311217. Further to 4.21/58, another change has been made: if (and only if) the
3113 first line of a message (the first header line) ends with CRLF, a bare LF
3114 in a subsequent header line has a space inserted after it, so as not to
3115 terminate the header.
3116
311718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3118 unnecessarily, used atoi() instead of strtol(), and didn't check the
3119 termination when getting file sizes from file names by regex.
3120
312119. Completely re-implemented the support for maildirsize files, in the light
3122 of a number of problems with the previous contributed implementation
3123 (4.30/29). In particular:
3124
3125 . If the quota is zero, the maildirsize file is maintained, but no quota is
3126 imposed.
3127
3128 . If the maildir directory does not exist, it is created before any attempt
3129 to write a maildirsize file.
3130
3131 . The quota value in the file is just a cache; if the quota is changed in
3132 the transport, the new value overrides.
3133
3134 . A regular expression is available for excluding directories from the
3135 count.
3136
313720. The autoreply transport checks the characters in options that define the
3138 message's headers; it allows continued headers, but it was checking with
3139 isspace() after an embedded newline instead of explicitly looking for a
3140 space or a tab.
3141
314221. If all the "regular" hosts to which an address was routed had passed their
3143 expiry times, and had not reached their retry times, the address was
3144 bounced, even if fallback hosts were defined. Now Exim should go on to try
3145 the fallback hosts.
3146
314722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3148 equivalent code in the SMTP transport. Some hosts send humungous responses
3149 to HELO/EHLO, more than 1024 it seems.
3150
315123. Refactoring: code in filter.c used (void *) for "any old type" but this
3152 gives compiler warnings in some environments. I've now done it "properly",
3153 using a union.
3154
315524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3156 (because of problems with the built-in one) was declared to return uschar *
3157 instead of char *, causing compiler failure.
3158
315925. Fixed a file descriptor leak when processing alias/forward files.
3160
316126. Fixed a minor format string issue in dbfn.c.
3162
316327. Typo in exim.c: ("dmbnz" for "dbmnz").
3164
316528. If a filter file refered to $h_xxx or $message_headers, and the headers
3166 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3167 become corrupted.
3168
316929. When a sender address is verified, it is cached, to save repeating the test
3170 when there is more than one recipient in a message. However, when the
3171 verification involves a callout, it is possible for different callout
3172 options to be set for different recipients. It is too complicated to keep
3173 track of this in the cache, so now Exim always runs a verification when a
3174 callout is required, relying on the callout cache for the optimization.
3175 The overhead is duplication of the address routing, but this should not be
3176 too great.
3177
317830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3179 to be verified with callout=postmaster, and the main callout worked but the
3180 postmaster check failed, the verification correctly failed. However, if a
3181 subsequent RCPT command asked for sender verification *without* the
3182 postmaster check, incorrect caching caused this verification also to fail,
3183 incorrectly.
3184
318531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3186 it was not caching the DNS options (qualify_single, search_parents) that
3187 were used when the lookup failed. A subsequent lookup with different
3188 options therefore always gave the same answer, though there were cases
3189 where it should not have. (Example: a "domains = !$mx_any" option on a
3190 dnslookup router: the "domains" option is always processed without any
3191 widening, but the router might have qualify_single set.) Now Exim uses the
3192 cached value only when the same options are set.
3193
319432. Added John Jetmore's "exipick" utility to the distribution.
3195
319633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3197 than a timeout (e.g. a certificate is required, and is not provided), an
3198 Exim server now closes the connection immediately. Previously it waited for
3199 the client to close - but if the client is SSL, it seems that they each
3200 wait for each other, leading to a delay before one of them times out.
3201
320234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3203 maintained 0.8.x compatibility because I don't think many are using it, and
3204 it is clearly obsolete.
3205
320635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3207 transport.
3208
320936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3210 client certificate was expired. A simple patch fixes this, though I don't
3211 understand the full logic of why the verify callback is called multiple
3212 times.
3213
321437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3215 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3216 which causes problems with some clients (such as the Certicom SSL Plus
3217 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3218 disables the coutermeasure allowing Eudora to connect."
3219
322038. Exim was not checking that a write() to a log file succeeded. This could
3221 lead to Bad Things if a log got too big, in particular if it hit a file
3222 size limit. Exim now panics and dies if it cannot write to a log file, just
3223 as it does if it cannot open a log file.
3224
322539. Modified OS/Makefile-Linux so that it now contains
3226
3227 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3228
3229 The two -D definitions ensure that Exim is compiled with large file
3230 support, which makes it possible to handle log files that are bigger than
3231 2^31.
3232
323340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3234 instance) a domain was checked against a named list that involved a lookup,
3235 causing $domain_data to be set, then another domain was checked against the
3236 same list, then the first domain was re-checked, the value of $domain_data
3237 after the final check could be wrong. In particular, if the second check
3238 failed, it could be set empty. This bug probably also applied to
3239 $localpart_data.
3240
324141. The strip_trailing_dot option was not being applied to the address given
3242 with the -f command-line option.
3243
324442. The code for reading a message's header from the spool was incrementing
3245 $received_count, but never initializing it. This meant that the value was
3246 incorrect (doubled) while delivering a message in the same process in which
3247 it was received. In the most common configuration of Exim, this never
3248 happens - a fresh exec is done - but it can happen when
3249 deliver_drop_privilege is set.
3250
325143. When Exim logs an SMTP synchronization error - client data sent too soon -
3252 it now includes up to 150 characters of the unexpected data in the log
3253 line.
3254
325544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3256 and building data strings. The size of both of these buffers was 10 000
3257 bytes - far larger than anybody would *ever* want, thought I. Needless to
3258 say, somebody hit the limit. I have increased the maximum line length to
3259 20 000 and the maximum data length of concatenated lines to 100 000. I have
3260 also fixed two bugs, because there was no checking on these buffers. Tsk,
3261 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3262 buffer is too small.
3263
326445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3265 lsearch lookups. Now it does.
3266
326746. When parsing a route_list item in a manualroute router, a fixed-length
3268 buffer was used for the list of hosts. I made this 1024 bytes long,
3269 thinking that nobody would ever have a list of hosts that long. Wrong.
3270 Somebody had a whole pile of complicated expansion conditions, and the
3271 string was silently truncated, leading to an expansion error. It turns out
3272 that it is easier to change to an unlimited length (owing to other changes
3273 that have happened since this code was originally written) than to build
3274 structure for giving a limitation error. The length of the item that
3275 expands into the list of hosts is now unlimited.
3276
327747. The lsearch lookup could not handle data where the length of text line was
3278 more than 4095 characters. Such lines were truncated, leading to shortened
3279 data being returned. It should now handle lines of any length.
3280
328148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3282 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3283 ACL").
3284
328549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3286 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3287 no longer happens in comment lines. A list of replacements is now placed
3288 at the head of all of the source files, except those whose only change is
3289 to replace PERL_COMMAND in the very first #! line.
3290
329150. Replaced the slow insertion sort in queue.c, for sorting the list of
3292 messages on the queue, with a bottom-up merge sort, using code contributed
3293 by Michael Haardt. This should make operations like -bp somewhat faster on
3294 large queues. It won't affect queue runners, except when queue_run_in_order
3295 is set.
3296
329751. Installed eximstats 1.31 in the distribution.
3298
329952. Added support for SRV lookups to the dnslookup router.
3300
330153. If an ACL referred to $message_body or $message_body_end, the value was not
3302 reset for any messages that followed in the same SMTP session.
3303
330454. The store-handling optimization for building very long strings was not
3305 differentiating between the different store pools. I don't think this
3306 actually made any difference in practice, but I've tidied it.
3307
330855. While running the routers to verify a sender address, $sender_address
3309 was still set to the sender address. This is wrong, because when routing to
3310 send a bounce to the sender, it would be empty. Therefore, I have changed
3311 it so that, while verifying a sender address, $sender_address is set to <>.
3312 (There is no change to what happens when verifying a recipient address.)
3313
331456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3315 target A or AAAA records (if not already returned) without resetting the
3316 qualify_single or search_parents options of the DNS resolver. These are
3317 inappropriate in this case because the targets of MX and SRV records must
3318 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3319 target that, when qualified, matched something in the local domain. These
3320 two options are now turned off when doing these lookups.
3321
332257. It seems that at least some releases of Reiserfs (which does not have the
3323 concept of a fixed number of inodes) returns zero and not -1 for the
3324 number of available inodes. This interacted badly with check_spool_inodes,
3325 which assumed that -1 was the "no such thing" setting. What I have done is
3326 to check that the total number of inodes is greater than zero before doing
3327 the test of how many are available.
3328
332958. When a "warn" ACL statement has a log_message modifier, the message is
3330 remembered, and not repeated. This is to avoid a lot of repetition when a
3331 message has many recipients that cause the same warning to be written.
3332 Howewer, Exim was preserving the list of already written lines for an
3333 entire SMTP session, which doesn't seem right. The memory is now reset if a
3334 new message is started.
3335
333659. The "rewrite" debugging flag was not showing the result of rewriting in the
3337 debugging output unless log_rewrite was also set.
3338
333960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3340 of (int)(handle) when we know that handle contains (void *)(-1).
3341
334261. The Exim daemon panic-logs an error return when it closes the incoming
3343 connection. However "connection reset by peer" seems to be common, and
3344 isn't really an error worthy of noting specially, so that particular error
3345 is no long logged.
3346
334762. When Exim is trying to find all the local interfaces, it used to panic and
3348 die if the ioctl to get the interface flags failed. However, it seems that
3349 on at least one OS (Solaris 9) it is possible to have an interface that is
3350 included in the list of interfaces, but for which you get a failure error
3351 for this call. This happens when the interface is not "plumbed" into a
3352 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3353 failure of the "get flags" call assumes that the interface is down.
3354
335563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3356 makes life easier for people who are doing arithmetic on fields extracted
3357 from dates, where you often get leading zeros that should not be
3358 interpreted as octal.
3359
336064. Added qualify_domain to the redirect router, to override the global
3361 setting.
3362
336365. If a pathologically long header line contained very many addresses (the
3364 report of this problem mentioned 10 000) and each of them was rewritten,
3365 Exim could use up a very large amount of memory. (It kept on making new
3366 copies of the header line as it rewrote, and never released the old ones.)
3367 At the expense of a bit more processing, the header rewriting function has
3368 been changed so that it no longer eats memory in this way.
3369
337066. The generation of the Received: header has been moved from the time that a
3371 message starts to be received, to the time that it finishes. The timestamp
3372 in the Received: header should now be very close to that of the <= log
3373 line. There are two side-effects of this change:
3374
3375 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3376 logged header lines no longer include the local Received: line, because
3377 it has not yet been created. The same applies to a copy of the message
3378 that is returned to a non-SMTP sender when a message is rejected.
3379
3380 (b) When a filter file is tested using -bf, no additional Received: header
3381 is added to the test message. After some thought, I decided that this
3382 is a bug fix.
3383
3384 This change does not affect the value of $received_for. It is still set
3385 after address rewriting, but before local_scan() is called.
3386
338767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3388
338968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3390 gave an unhelpful panic error message, and a defer error. I have managed to
3391 change this behaviour so that it now rejects any supplied certificate,
3392 which seems right, as the list of acceptable certificates is empty.
3393
339469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3395 gave an unhelpful defer error. I have not managed to make this reject any
3396 supplied certificates, but the error message it gives is "no certificate
3397 supplied", which is not helpful.
3398
339970. exigrep's output now also includes lines that are not associated with any
3400 message, but which match the given pattern. Implemented by a patch from
3401 Martin Sluka, which also tidied up the Perl a bit.
3402
340371. Recipient callout verification, like sender verification, was using <> in
3404 the MAIL FROM command. This isn't really the right thing, since the actual
3405 sender may affect whether the remote host accepts the recipient or not. I
3406 have changed it to use the actual sender in the callout; this means that
3407 the cache record is now keyed on a recipient/sender pair, not just the
3408 recipient address. There doesn't seem to be a real danger of callout loops,
3409 since a callout by the remote host to check the sender would use <>.
3410 [SEE ABOVE: changed after hitting problems.]
3411
341272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3413 temporary errors. However, in the case of such a code being given after
3414 the end of a data transmission (i.e. after ".") Exim was failing to write
3415 a retry record for the message. (Yes, there was some broken host that was
3416 actually sending 8xx at this point.)
3417
341873. An unknown lookup type in a host list could cause Exim to panic-die when
3419 the list was checked. (An example that provoked this was putting <; in the
3420 middle of a list instead of at the start.) If this happened during a DATA
3421 ACL check, a -D file could be left lying around. This kind of configuration
3422 error no longer causes Exim to die; instead it causes a defer errror. The
3423 incident is still logged to the main and panic logs.
3424
342574. Buglet left over from Exim 3 conversion. The message "too many messages
3426 in one connection" was written to the rejectlog but not the mainlog, except
3427 when address rewriting (yes!) was being logged.
3428
342975. Added write_rejectlog option.
3430
343176. When a system filter was run not as root (that is, when system_filter_user
3432 was set), the values of the $n variables were not being returned to the
3433 main process; thus, they were not subsequently available in the $sn
3434 variables.
3435
343677. Added +return_path_on_delivery log selector.
3437
343878. A connection timeout was being treated differently from recipients deferred
3439 when testing hosts_max_try with a message that was older than the host's
3440 retry timeout. (The host should not be counted, thus allowing all hosts to
3441 be tried at least once before bouncing.) This may have been the cause of an
3442 occasionally reported bug whereby a message would remain on the queue
3443 longer than the retry timeout, but would be bounced if a delivery was
3444 forced. I say "may" because I never totally pinned down the problem;
3445 setting up timeout/retry tests is difficult. See also the next item.
3446
344779. The ultimate address timeout was not being applied to errors that involved
3448 a combination of host plus message (for example, a timeout on a MAIL
3449 command). When an address resolved to a number of possible hosts, and they
3450 were not all tried for each delivery (e.g. because of hosts_max_try), a
3451 message could remain on the queue longer than the retry timeout.
3452
345380. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3454 Haardt.
3455
345681. Fixed an obscure SMTP outgoing bug which required at least the following
3457 conditions: (a) there was another message waiting for the same server;
3458 (b) the server returned 5xx to all RCPT commands in the first message so
3459 that the message was not completed; (c) the server dropped the connection
3460 or gave a negative response to the RSET that Exim sends to abort the
3461 transaction. The observed case was a dropped connection after DATA that had
3462 been sent in pipelining mode. That is, the server had advertised PIPELINING
3463 but was not implementing it correctly. The effect of the bug was incorrect
3464 behaviour, such as trying another host, and this could lead to a crash.
3465
3466
3467Exim version 4.30
3468-----------------
3469
3470 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3471 and daemon.c were passed as pointers to ints; they should have been
3472 pointers to socklen_t variables (which are typically unsigned ints).
3473
3474 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3475 fixed.
3476
3477 3. Fixed a really odd bug that affected only the testing scheme; patching a
3478 certain fixed string in the binary changed the value of another string that
3479 happened to be identical to the end of the original first string.
3480
3481 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3482 name", it returns that address as the IP address. On some operating
3483 systems (e.g. Solaris), it also passes back the IP address string as the
3484 "host name". However, on others (e.g. Linux), it passes back an empty
3485 string. Exim wasn't checking for this, and was changing the host name to an
3486 empty string, assuming it had been canonicized.
3487
3488 5. Although rare, it is permitted to have more than one PTR record for a given
3489 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3490 all the names associated with an address, because they do in Solaris.
3491 However, it seems that they do not in Linux for data that comes from the
3492 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3493 I found this out when I moved to a new Linux workstation and tried to run
3494 the Exim test suite.
3495
3496 To get round this problem I have changed the code so that it now does its
3497 own call to the DNS to look up PTR records when searching for a host name.
3498 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3499 addresses that are only in /etc/hosts are still found.
3500
3501 This behaviour is, however, controlled by an option called host_lookup_
3502 order, which defaults to "bydns:byaddr". If people want to use the other
3503 order, or indeed, just use one or the other means of lookup, they can
3504 specify it in this variable.
3505
3506 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3507 some operating systems, this comes back from gethostbyaddr() as an empty
3508 string, and this is what Exim used to test for. However, it seems that in
3509 other systems, "." is yielded. Exim now tests for this case too.
3510
3511 7. The values of check_spool_space and check_log_space are now held internally
3512 as a number of kilobytes instead of an absolute number of bytes. If a
3513 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3514 kilobyte. This means that much larger values can be stored.
3515
3516 8. Exim monitor: an attempt to get the action menu when not actually pointing
3517 at a message produces an empty menu entitled "No message selected". This
3518 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3519 no entries in it ("Shell widget menu has zero width and/or height"). So I
3520 have added a single, blank menu entry in this case.
3521
3522 9. Added ${quote_local_part.
3523
352410. MIME decoding is now applied to the contents of Subject: header lines when
3525 they are logged.
3526
352711. Now that a reference to $sender_host_address automatically causes a reverse
3528 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3529 host lookup before query-style lookups in lists that might use this
3530 variable. This has therefore been abolished, and the "net-" prefix is no
3531 longer necessary for query-style lookups.
3532
353312. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3534 have been a typo for LFLAGS, so it has been changed.
3535
353613. The install script calls Exim with "-C /dev/null" in order to find the
3537 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3538 to be output. Howeve, since Exim outputs its version number before the
3539 error, it didn't break the script. It just looked ugly. I fixed this by
3540 always allowing "-C /dev/null" if the caller is root.
3541
354214. Ignore overlarge ACL variable number when reading spool file - insurance
3543 against a later release with more variables having written the file.
3544
354515. The standard form for an IPv6 address literal was being rejected by EHLO.
3546 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3547 this, as well as the form without the "IPv6" on the front.
3548
354916. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3550 OS/Makefile-Darwin file.
3551
355217. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3553 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3554
355518. After change 4.21/52, "%ld" was used to format the contents of the $inode
3556 variable. However, some OS use ints for inodes. I've added cast to long int
3557 to get rid of the compiler warning.
3558
355919. I had forgotten to lock out "/../" in configuration file names when
3560 ALT_CONFIG_PREFIX was set.
3561
356220. Routers used for verification do not need to specify transports. However,
3563 if such a router generated a host list, and callout was configured, Exim
3564 crashed, because it could not find a port number from the (non-existent)
3565 transport. It now assumes port 25 in this circumstance.
3566
356721. Added the -t option to exigrep.
3568
356922. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3570 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3571 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3572 them is set, LOOKUP_LSEARCH is forced.
3573
357423. "exim -bV" now outputs a list of lookups that are included in the binary.
3575
357624. Added sender and host information to the "rejected by local_scan()" log
3577 line; previously there was no indication of these.
3578
357925. Added .include_if_exists.
3580
358126. Change 3.952/11 added an explicit directory sync on top of a file sync for
3582 Linux. It turns out that not all file systems support this. Apparently some
3583 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3584 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3585 not supported on the file descriptor, is now ignored when Exim is trying to
3586 sync a directory. This applies only to Linux.
3587
358827. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3589
359028. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3591 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3592 this.
3593
359429. Added support for maildirsize files from supplied patch (modified a bit).
3595
359630. The use of :fail: followed by an empty string could lead Exim to respond to
3597 sender verification failures with (e.g.):
3598
3599 550 Verification failed for <xxx>
3600 550 Sender verify failed
3601