Don't set $sender_host_name if forward lookup of name obtained from
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
55728a4f 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.439 2006/11/20 14:29:31 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
d7d7b289
SC
280SC/01 Eximstats V1.43
281 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
282
283SC/02 Eximstats V1.44
284 Use a glob alias rather than an array ref in the generated
285 parser. This improves both readability and performance.
286
287SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
288 Collect SpamAssassin and rejection statistics.
289 Don't display local sender or destination tables unless
290 there is data to show.
291 Added average volumes into the top table text output.
292
293SC/04 Eximstats V1.46
294 Collect data on the number of addresses (recipients)
295 as well as the number of messages.
296
297SC/05 Eximstats V1.47
298 Added 'Message too big' to the list of mail rejection
299 reasons (thanks to Marco Gaiarin).
300
301SC/06 Eximstats V1.48
302 Mainlog lines which have GMT offsets and are too short to
303 have a flag are now skipped.
304
305SC/07 Eximstats V1.49 (Alain Williams)
306 Added the -emptyok flag.
307
308SC/08 Eximstats V1.50
309 Fixes for obtaining the IP address from reject messages.
310
0ea2a468
JJ
311JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
312 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
313 whitesspace changes from 4.64-PH/27
314
315JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
316 match 4.64-PH/13
317
318JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
319 are found, allow negative numbers in numeric criteria)
320
321JJ/06 exipick.20061117.2, added new $message_body_missing variable
322
323JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
324 to match changes made in 4.64-PH/43
325
8a10f5a4
PH
326PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
327
30e18802
PH
328PH/47 Put in an explicit test for a DNS lookup of an address record where the
329 "domain" is actually an IP address, and force a failure. This locks out
330 those revolvers/nameservers that support "A-for-A" lookups, in
331 contravention of the specifications.
332
55728a4f
PH
333PH/48 When a host name was looked up from an IP address, and the subsequent
334 forward lookup of the name timed out, the host name was left in
335 $sender_host_name, contrary to the specification.
d7d7b289 336
944e9e9c 337
478be7b0
SC
338Exim version 4.63
339-----------------
340
341SC/01 Use a glob alias rather than an array ref in eximstats generated
342 parser. This improves both readability and performance.
343
344SC/02 Collect SpamAssassin and rejection statistics in eximstats.
345 Don't display local sender or destination tables in eximstats unless
346 there is data to show.
347 Added average volumes into the eximstats top table text output.
348
349SC/03 Collect data on the number of addresses (recipients) as well
350 as the number of messages in eximstats.
351
2b965a65
TF
352TF/01 Correct an error in the documentation for the redirect router. Exim
353 does (usually) call initgroups() when daemonizing.
478be7b0 354
45b91596
PH
355TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
356 with consistent privilege compared to when running as a daemon.
478be7b0 357
c59f5781
TF
358TF/03 Note in the spec that $authenticated_id is not set for local
359 submissions from trusted users.
360
90fc3069
TF
361TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
362 Thanks to Dean Brooks <dean@iglou.com> for the patch.
363
6083aca0
TF
364TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
365 by adding some example configuration directives to the default
366 configuration file. A little bit of work is required to uncomment the
367 directives and define how usernames and passwords are checked, but
368 there is now a framework to start from.
369
765b530f
PH
370PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
371 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
372 without this. I don't know how relevant this is to other LDAP libraries.
373
4e167a8c
PH
374PH/02 Add the verb name to the "unknown ACL verb" error.
375
4608d683
PH
376PH/03 Magnus Holmgren's patch for filter_prepend_home.
377
b8dc3e4a
PH
378PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
379
5418e93b
PH
380PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
381 directory not expanded when it should be if an expanded home directory
382 was set for the address (which is overridden by the transport).
383
b4a9bda2
PH
384PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
385 libradius.
386
45b91596
PH
387PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
388 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
389 because it is too late at that time, and has no effect.
390
5547e2c5
PH
391PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
392 security issue with \' (bugzilla #107). I could not use the
393 PQescapeStringConn() function, because it needs a PGconn value as one of
394 its arguments.
395
dbcef0ea
PH
396PH/08 When testing addresses using -bt, indicate those final addresses that
397 are duplicates that would not cause an additional delivery. At least one
398 person was confused, thinking that -bt output corresponded to deliveries.
399 (Suppressing duplicates isn't a good idea as you lose the information
400 about possibly different redirections that led to the duplicates.)
401
25257489
PH
402PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
403 systems where poll() doesn't work, in particular OS X.
404
c816d124
PH
405PH/10 Added more information to debugging output for retry time not reached.
406
a9ccd69a
PH
407PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
408 operations in malware.c.
409
75fa1910
PH
410PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
411 signatures.
412
a7d7aa58
PH
413PH/13 If write_rejectlog was set false when logging was sent to syslog with
414 syslog_duplication set false, log lines that would normally be written
415 both the the main log and to the reject log were not written to syslog at
416 all.
417
42119b09
PH
418PH/14 In the default configuration, change the use of "message" in ACL warn
419 statements to "add_header".
420
41609df5
PH
421PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
422 not followed by a command (e.g. "seen endif").
423
a5bd321b
PH
424PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
425 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
426 latter.
427
e85a7ad5 428PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
429 so that it is now:
430
e85a7ad5
PH
431 ${if or { \
432 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
433 { match{$h_precedence:}{(?i)bulk|list|junk} } \
434 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
435 }{no}{yes}}
436
e85a7ad5
PH
437 The Auto-Submitted: and various List- headers are standardised, whereas I
438 don't think Precedence: ever was.
5dff5817 439
d8fe1c03
PH
440PH/18 Refactored debugging code in route_finduser() to show more information,
441 in particular, the error code if getpwnam() issues one.
442
16282d2b
PH
443PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
444 This is apparently needed in addition to the PH/07 change above to avoid
445 any possible encoding problems.
446
35d40a98
PH
447PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
448 but not after initializing Perl.
449
034d99ab
PH
450PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
451 output them only if debugging. By default they are written stderr,
452 apparently, which is not desirable.
453
6ec97b1b
PH
454PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
455 queries.
456
e22ca4ac
JJ
457JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
458 --not options
459
460JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
461
33d73e3b
PH
462PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
463 authenticated or an ident call has been made. Suppress the default
464 values for $authenticated_id and $authenticated_sender (but permit -oMai
465 and -oMas) when testing with -bh.
466
9ecb03f3
PH
467PH/24 Re-jigged the order of the tests in the default configuration so that the
468 tests for valid domains and recipients precede the DNS black list and CSA
469 tests, on the grounds that those ones are more expensive.
470
084efe8d
PH
471PH/25 Exim was not testing for a space following SMTP commands such as EHLO
472 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
473 This bug exists in every version of Exim that I still have, right back to
474 0.12.
475
366fc9f0
PH
476PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
477 However, an attempt to turn on case-sensitivity in a regex key by
478 including (?-i) didn't work because the subject string was already
479 lowercased, and the effects were non-intuitive. It turns out that a
480 one-line patch can be used to allow (?-i) to work as expected.
481
c59f5781 482
c887c79e
TF
483Exim version 4.62
484-----------------
485
486TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
487 other effects) broke the use of negated acl sub-conditions.
488
1cce3af8
PH
489PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
490 patch).
491
afb3eaaf
PH
492PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
493 "Deny" causes Exim to reject the incoming connection with a 554 error.
494 Unfortunately, if there is a major crisis, such as a disk failure,
495 tcp-wrappers gives "deny", whereas what one would like would be some
496 kind of temporary error. A kludge has been added to help with this.
497 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
498 554 error is used if errno is still zero or contains ENOENT (which occurs
499 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
500 451 error is used.
501
e173618b
PH
502PH/03 Add -lutil to the default FreeBSD LIBS setting.
503
dd16e114
PH
504PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
505 errors. Otherwise a message that provokes a temporary error (when other
506 messages do not) can cause a whole host to time out.
507
f7fd3850
PH
508PH/05 Batch deliveries by appendfile and pipe transports did not work when the
509 addresses were routed directly to files or pipes from a redirect router.
510 File deliveries just didn't batch; pipe deliveries might have suffered
511 odd errors.
512
d87df92c
PH
513PH/06 A failure to get a lock for a hints database would erroneously always say
514 "Failed to get write lock", even when it was really a read lock.
515
7e9f683d
PH
516PH/07 The appendfile transport was creating MBX lock files with a fixed mode
517 of 0600. This has been changed to use the value of the lockfile_mode
518 option (which defaults to 0600).
519
bfad5236
PH
520PH/08 Applied small patch from the Sieve maintainer.
521
01c490df
PH
522PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
523 folder from quota calculations, a direct delivery into this folder messed
524 up the contents of the maildirsize file. This was because the regex was
525 used only to exclude .Trash (or whatever) when the size of the mailbox
526 was calculated. There was no check that a delivery was happening into an
527 excluded directory. This bug has been fixed by ignoring all quota
528 processing for deliveries into excluded directories.
529
d6629cdc
PH
530PH/10 Added the maildirfolder_create_regex option to appendfile.
531
1cce3af8 532
214e2000
PH
533Exim version 4.61
534-----------------
535
536PH/01 The code for finding all the local interface addresses on a FreeBSD
537 system running IPv6 was broken. This may well have applied to all BSD
538 systems, as well as to others that have similar system calls. The broken
539 code found IPv4 interfaces correctly, but gave incorrect values for the
540 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
541 that it would not match correctly against @[] and not recognize the IPv6
542 addresses as local.
543
f9daeae0
PH
544PH/02 The ipliteral router was not recognizing addresses of the form user@
545 [ipv6:....] because it didn't know about the "ipv6:" prefix.
546
7e66e54d
PH
547PH/03 Added disable_ipv6.
548
c8ea1597
PH
549PH/04 Changed $reply_address to use the raw form of the headers instead of the
550 decoded form, because it is most often used to construct To: headers
551 lines in autoreplies, and the decoded form may well be syntactically
552 invalid. However, $reply_address has leading white space removed, and all
553 newlines turned into spaces so that the autoreply transport does not
554 grumble.
555
911f6fde
PH
556PH/05 If group was specified without a user on a router, and no group or user
557 was specified on a transport, the group from the router was ignored.
558
47ca6d6c
PH
559PH/06 Increased the number of ACL variables to 20 of each type, and arranged
560 for visible compile-time settings that can be used to change these
561 numbers, for those that want even more. Backwards compatibility with old
562 spool files has been maintained. However, going back to a previous Exim
563 release will lost any variables that are in spool files.
564
ed0e9820
PH
565PH/07 Two small changes when running in the test harness: increase delay when
566 passing a TCP/IP connection to a new process, in case the original
567 process has to generate a bounce, and remove special handling of
568 127.0.0.2 (sic), which is no longer necessary.
569
eff37e47
PH
570PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
571 be the same on different OS.
572
1921d2ea
PH
573PH/09 Moved a debug statement in filter processing to avoid a race problem when
574 testing.
575
b3f69ca8
JJ
576JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
577 whether --show-vars was specified or not
578
579JJ/02 exipick: Added support for new ACL variable spool format introduced
580 in 4.61-PH/06
581
424a1c63
PH
582PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
583 syntactically invalid From: or Reply-to: line, and a filter used this to
584 generate an autoreply, and therefore failed to obtain an address for the
585 autoreply, Exim could try to deliver to a non-existent relative file
586 name, causing unrelated and misleading errors. What now happens is that
587 it logs this as a hard delivery error, but does not attempt to create a
588 bounce message.
589
7a100415
PH
590PH/11 The exinext utility has a -C option for testing purposes, but although
591 the given file was scanned by exinext itself; it wasn't being passed on
592 when Exim was called.
593
19b9dc85
PH
594PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
595 an end-of-file indication when reading a command response.
596
309bd837
PH
597PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
598 compiled. In many other places in Exim, IPv6 addresses are always
599 recognized, so I have changed this. It also means that IPv4 domain
600 literals of the form [IPV4:n.n.n.n] are now always recognized.
601
59e82a2a
PH
602PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
603 used if the router is not running as root, for example, when verifying at
604 ACL time, or when using -bh. The debugging output from this situation was
605 non-existent - all you got was a failure to exec. I have made two
606 changes:
607
608 (a) Failures to set uid/gid, the current directory, or a process leader
609 in a subprocess such as that created by queryprogram now generate
610 suitable debugging ouput when -d is set.
611
612 (b) The queryprogram router detects when it is not running as root,
613 outputs suitable debugging information if -d is set, and then runs
614 the subprocess without attempting to change uid/gid.
615
9edc04ce
PH
616PH/15 Minor change to Makefile for building test_host (undocumented testing
617 feature).
618
1349e1e5
PH
619PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
620 additional section of a DNS packet that returns MX or SRV records.
621 Instead, it always explicitly searches for A/AAAA records. This avoids
622 major problems that occur when a DNS server includes only records of one
623 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
624 fixed another bug: if SRV records were looked up and the corresponding
625 address records were *not* found in the additional section, the port
626 values from the SRV records were lost.
627
ea49d0e1
PH
628PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
629 using the correct key (the original address) when searching the retry
630 rules in order to find which one to use for generating the retry hint.
631
064a94c9
PH
632PH/18 If quota_warn_message contains a From: header, Exim now refrains from
633 adding the default one. Similarly, if it contains a Reply-To: header, the
634 errors_reply_to option, if set, is not used.
635
727071f8
PH
636PH/19 When calculating a retry time, Exim used to measure the "time since
637 failure" by looking at the "first failed" field in the retry record. Now
638 it does not use this if it is later than than the arrival time of the
639 message. Instead it uses the arrival time. This makes for better
640 behaviour in cases where some deliveries succeed, thus re-setting the
641 "first failed" field. An example is a quota failure for a huge message
642 when small messages continue to be delivered. Without this change, the
643 "time since failure" will always be short, possible causing more frequent
644 delivery attempts for the huge message than are intended.
dd16e114 645 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 646
f78eb7c6
PH
647PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
648 $1, $2, $3) because the numerical variables can be reset during some
649 expansion items (e.g. "match"), thereby losing the authentication data.
650
21c28500
PH
651PH/21 Make -bV show the size of off_t variables so that the test suite can
652 decide whether to run tests for quotas > 2G.
653
654PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
655 mailbox_size, and mailbox_filecount in the appendfile transport. If a
656 filecount value is greater than 2G or if a quota value is greater than 2G
657 on a system where the size of off_t is not greater than 4, a panic error
658 is given.
659
1688f43b
PH
660PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
661 never match. The debug and -bh output now contains an explicit error
662 message indicating a malformed IPv4 address or mask.
663
664PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
665 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
666 PH/23 above applies.
667
9675b384
PH
668PH/25 Do not write to syslog when running in the test harness. The only
669 occasion when this arises is a failure to open the main or panic logs
670 (for which there is an explicit test).
671
6a3f1455
PH
672PH/26 Added the /no_tell option to "control=freeze".
673
dac79d3e
PH
674PH/27 If a host name lookup failed very early in a connection, for example, if
675 the IP address matched host_lookup and the reverse lookup yielded a name
676 that did not have a forward lookup, an error message of the form "no IP
677 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
678 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 679
5977a0b3
PH
680PH/28 An enabling patch from MH: add new function child_open_exim2() which
681 allows the sender and the authenticated sender to be set when
682 submitting a message from within Exim. Since child_open_exim() is
683 documented for local_scan(), the new function should be too.
684
c91535f3
PH
685PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
686 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
687 results in an empty string is now treated as unset.
688
0d46a8c8
PH
689PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
690
278c6e6c
PH
691PH/31 Added sender_verify_fail logging option.
692
2cbb4081
PH
693PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
694 needed by RFC 822 but not by RFC 2822 was commented out. I have now
695 tidied the source and removed it altogether.
696
3eef829e
PH
697PH/33 When a queue run was abandoned because the load average was too high, a
698 log line was always written; now it is written only if the queue_run log
699 selector is set. In addition, the log line for abandonment now contains
700 information about the queue run such as the pid. This is always present
701 in "start" and "stop" lines but was omitted from the "abandon" line.
702
1ab95fa6
PH
703PH/34 Omit spaces between a header name and the colon in the error message that
704 is given when verify = headers_syntax fails (if there are lots of them,
705 the message gets confusing).
706
230205fc
PH
707PH/35 Change the default for dns_check_names_pattern to allow slashes within
708 names, as there are now some PTR records that contain slashes. This check
709 is only to protect against broken name servers that fall over on strange
710 characters, so the fact that it applies to all lookups doesn't matter.
711
75e0e026
PH
712PH/36 Now that the new test suite is complete, we can remove some of the
713 special code in Exim that was needed for the old test suite. For example,
714 sorting DNS records because real resolvers return them in an arbitrary
715 order. The new test suite's fake resolver always returns records in the
716 same order.
717
718PH/37 When running in the test harness, use -odi for submitted messages (e.g.
719 bounces) except when queue_only is set, to avoid logging races between
720 the different processes.
721
145396a6
PH
722PH/38 Panic-die if .include specifies a non-absolute path.
723
3cd34f13
PH
724PH/39 A tweak to the "H" retry rule from its user.
725
11121d3d
JJ
726JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
727 a label. They prevented compilation on older perls.
728
729JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
730 a warning to be raised on newish perls.
731
732JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
733 on queue. Changes to match documented behaviour of showing count of
734 messages matching specified criteria.
735
8def5aaf
PH
736PH/40 Changed the default ident timeout from 30s to 5s.
737
929ba01c
PH
738PH/41 Added support for the use of login_cap features, on those BSD systems
739 that have them, for controlling the resources used by pipe deliveries.
740
2632889e
PH
741PH/42 The content-scanning code uses fopen() to create files in which to put
742 message data. Previously it was not paying any attention to the mode of
743 the files. Exim runs with umask(0) because the rest of the code creates
744 files with open(), and sets the required mode explicitly. Thus, these
745 files were ending up world-writeable. This was not a big issue, because,
746 being within the spool directory, they were not world-accessible. I have
747 created a function called modefopen, which takes an additional mode
748 argument. It sets umask(777), creates the file, chmods it to the required
749 mode, then resets the umask. All the relevant calls to fopen() in the
750 content scanning code have been changed to use this function.
751
944a9c55
PH
752PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
753 to 24 hours. This avoids potential overflow problems when processing G
754 and H retry rules. I suspect nobody ever tinkers with this value.
755
4a23603b
PH
756PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
757
4730f942
PH
758PH/45 When the plaintext authenticator is running as a client, the server's
759 challenges are checked to ensure they are valid base64 strings. By
760 default, the authentication attempt is cancelled if an invalid string is
761 received. Setting client_ignore_invalid_base64 true ignores these errors.
762 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
763 they are received. Thus, the responses can be made to depend on the
764 challenges. If an invalid string is ignored, an empty string is placed in
765 the variable.
766
30dba1e6
PH
767PH/46 Messages that are created by the autoreply transport now contains a
768 References: header, in accordance with RFCs 2822 and 3834.
769
382afc6b
PH
770PH/47 Added authenticated_sender_force to the smtp transport.
771
a86229cf
PH
772PH/48 The ${prvs expansion was broken on systems where time_t was long long.
773
50c99ba6
PH
774PH/49 Installed latest patch from the Sieve maintainer.
775
d35e429d
PH
776PH/50 When an Exim quota was set without a file count quota, and mailbox_size
777 was also set, the appendfile transport was unnecessarily scanning a
778 directory of message files (e.g. for maildir delivery) to find the count
779 of files (along with the size), even though it did not need this
780 information. It now does the scan only if it needs to find either the
781 size of the count of files.
782
f90d018c
PH
783PH/51 Added ${time_eval: to convert Exim time strings into seconds.
784
75def545
PH
785PH/52 Two bugs concerned with error handling when the smtp transport is
786 used in LMTP mode:
787
788 (i) Exim was not creating retry information for temporary errors given
789 for individual recipients after the DATA command when the smtp transport
790 was used in LMTP mode. This meant that they could be retried too
791 frequently, and not timed out correctly.
792
793 (ii) Exim was setting the flag that allows error details to be returned
794 for LMTP errors on RCPT commands, but not for LMTP errors for individual
795 recipients that were returned after the DATA command.
796
797PH/53 This is related to PH/52, but is more general: for any failing address,
798 when detailed error information was permitted to be returned to the
799 sender, but the error was temporary, then after the final timeout, only
800 "retry timeout exceeded" was returned. Now it returns the full error as
801 well as "retry timeout exceeded".
802
c46782ef
PH
803PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
804 do this, and (what is worse) MTAs that accept it.
805
71fafd95
PH
806PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
807 will now be deprecated.
808
2c5db4fd
PH
809PH/56 New os.c-cygwin from the Cygwin maintainer.
810
9cf6b11a
JJ
811JJ/06 exipick: added --unsorted option to allow unsorted output in all output
812 formats (previously only available in exim formats via -bpr, -bpru,
813 and -bpra. Now also available in native and exiqgrep formats)
814
815JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
816 with very large, slow to parse queues
817
818JJ/08 exipick: added ! as generic prefix to negate any criteria format
819
820JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
821
898d150f
PH
822PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
823 responses to authentication challenges, though it was showing the
824 challenges; (ii) I've removed the CR characters from the debug output for
825 SMTP output lines.
826
46218253
PH
827PH/58 Allow for the insertion of a newline as well as a space when a string
828 is turned into more than one encoded-word during RFC 2047 encoding. The
829 Sieve code now uses this.
830
e97957bc
PH
831PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
832 data_4xx, lost_connection, tls_required.
833
81e509d7
PH
834PH/60 When a VRFY deferred or FAILED, the log message rather than the user
835 message was being sent as an SMTP response.
836
3d240ff7
PH
837PH/61 Add -l and -k options to exicyclog.
838
b37c4101
PH
839PH/62 When verifying, if an address was redirected to one new address, so that
840 verification continued, and the new address failed or deferred after
841 having set something in $address_data, the value of $address_data was not
842 passed back to the ACL. This was different to the case when no
843 redirection occurred. The value is now passed back in both cases.
844
79378e0f
PH
845PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
846 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
847 use login_cap.h, so on its own it isn't the distinguishing feature. The
848 new name refers directly to the setclassresources() function.
849
e49c7bb4
PH
850PH/65 Added configuration files for NetBSD3.
851
d114ec46
PH
852PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
853
f3d7df6c
PH
854PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
855 is preferred over IPv4.
856
715ab376
PH
857PH/68 The bounce_return_message and bounce_return_body options were not being
858 honoured for bounces generated during the reception of non-SMTP messages.
859 In particular, this applied to messages rejected by the ACL. This bug has
860 been fixed. However, if bounce_return_message is true and bounce_return_
861 body is false, the headers that are returned for a non-SMTP message
862 include only those that have been read before the error was detected.
863 (In the case of an ACL rejection, they have all been read.)
864
6b31b150
PH
865PH/69 The HTML version of the specification is now built in a directory called
866 spec_html instead of spec.html, because the latter looks like a path with
867 a MIME-type, and this confuses some software.
868
869PH/70 Catch two compiler warnings in sieve.c.
870
d515a917
PH
871PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
872 function verify_get_ident() calls ip_connect() to connect a socket, but
873 if the "connect()" function timed out, ip_connect() used to close the
874 socket. However, verify_get_ident() also closes the socket later, and in
875 between Exim writes to the log, which may get opened at this point. When
876 the socket was closed in ip_connect(), the log could get the same file
877 descriptor number as the socket. This naturally causes chaos. The fix is
878 not to close the socket in ip_connect(); the socket should be closed by
879 the function that creates it. There was only one place in the code where
880 this was missing, in the iplookup router, which I don't think anybody now
881 uses, but I've fixed it anyway.
882
9b8fadde
PH
883PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
884 well as to direct DNS lookups. Otherwise the handling of names in host
885 lists is inconsistent and therefore confusing.
886
214e2000 887
5de37277
PH
888Exim version 4.60
889-----------------
890
cc38ddbf
PH
891PH/01 Two changes to the default runtime configuration:
892
893 (1) Move the checks for relay_from_hosts and authenticated clients from
894 after to before the (commented out) DNS black list checks.
895
896 (2) Add control=submission to the relay_from_hosts and authenticated
897 clients checks, on the grounds that messages accepted by these
898 statements are most likely to be submissions.
5de37277 899
72fdd6ae
PH
900PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
901
902 (1) Generate an error if the third argument for the ${prvs expansion is
903 not a single digit.
904
905 (2) Treat a missing third argument of ${prvscheck as if it were an empty
906 string.
907
908 (3) Reset the variables that are obtained from the first argument of
909 ${prvscheck and used in the second argument before leaving the code,
910 because their memory is reclaimed, so using them afterwards may do
911 silly things.
912
913 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
914 one (it's much easier than Tom thought :-).
915
916 (5) Because of (4), we can now allow for the use of $prvscheck_result
917 inside the third argument.
cb9328de 918
cb741023
PH
919PH/03 For some reason, the default setting of PATH when running a command from
920 a pipe transport was just "/usr/bin". I have changed it to
921 "/bin:/usr/bin".
922
f174f16e
PH
923PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
924 anything to be listed in the output from -bV.
b2f5a032 925
c25242d7
PH
926PH/05 When a filter generated an autoreply, the entire To: header line was
927 quoted in the delivery log line, like this:
928
929 => >A.N.Other <ano@some.domain> <original@ddress> ...
930
931 This has been changed so that it extracts the operative address. There
932 may be more than one such address. If so, they are comma-separated, like
933 this:
934
935 => >ano@some.domain,ona@other.domain <original@ddress> ...
936
82c19f95
PH
937PH/06 When a client host used a correct literal IP address in a HELO or EHLO
938 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
939 not being looked up in the rDNS to get a host name, Exim was showing the
940 IP address twice in Received: lines, even though the IP addresses were
941 identical. For example:
942
943 Received: from [1.2.3.4] (helo=[1.2.3.4])
944
945 However, if the real host name was known, it was omitting the HELO data
946 if it matched the actual IP address. This has been tidied up so that it
947 doesn't show the same IP address twice.
948
d7ffbc12
PH
949PH/07 When both +timestamp and +memory debugging was on, the value given by
950 $tod_xxx expansions could be wrong, because the tod_stamp() function was
951 called by the debug printing, thereby overwriting the timestamp buffer.
952 Debugging no longer uses the tod_stamp() function when +timestamp is set.
953
9f526266
PH
954PH/08 When the original message was included in an autoreply transport, it
955 always said "this is a copy of the message, including all the headers",
956 even if body_only or headers_only was set. It now gives an appropriate
957 message.
958
87fcc8b9
PH
959PH/09 Applied a patch from the Sieve maintainer which:
960
961 o fixes some comments
962 o adds the (disabled) notify extension core
963 o adds some debug output for the result of if/elsif tests
964 o points to the current vacation draft in the documentation
965 and documents the missing references header update
966
967 and most important:
968
969 o fixes a bug in processing the envelope test (when testing
970 multiple envelope elements, the last element determinted the
971 result)
972
456682f5
PH
973PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
974 Electronic Mail") by including:
975
976 Auto-submitted: auto-generated
977
978 in the messages that it generates (bounce messages and others, such as
979 warnings). In the case of bounce messages for non-SMTP mesages, there was
980 also a typo: it was using "Auto_submitted" (underscore instead of
981 hyphen). Since every message generated by Exim is necessarily in response
982 to another message, thes have all been changed to:
983
984 Auto-Submitted: auto-replied
985
986 in accordance with these statements in the RFC:
987
988 The auto-replied keyword:
989
990 - SHOULD be used on messages sent in direct response to another
991 message by an automatic process,
992
993 - MUST NOT be used on manually-generated messages,
994
995 - MAY be used on Delivery Status Notifications (DSNs) and Message
996 Disposition Notifications (MDNs),
997
998 - MUST NOT be used on messages generated by automatic or periodic
999 processes, except for messages which are automatic responses to
1000 other messages.
1001
3e46c1aa
PH
1002PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1003 to the default Received: header definition.
456682f5 1004
49826d12
PH
1005PH/12 Added log selector acl_warn_skipped (default on).
1006
eba0c039
PH
1007PH/13 After a successful wildlsearch lookup, discard the values of numeric
1008 variables because (a) they are in the wrong storage pool and (b) even if
1009 they were copied, it wouldn't work properly because of the caching.
1010
a0d6ba8a
PH
1011PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1012 checking when decoding. Apparently there are clients that generate
1013 overlong encoded strings. Why am I not surprised?
1014
f0917727
PH
1015PH/15 If the first argument of "${if match_address" was not empty, but did not
1016 contain an "@" character, Exim crashed. Now it writes a panic log message
1017 and treats the condition as false.
1018
096fee00
PH
1019PH/16 In autoreply, treat an empty string for "once" the same as unset.
1020
024bd3c2
PH
1021PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1022 extension "envelope-auth". The code is finished and in agreement with
1023 other implementations, but there is no documentation so far and in fact,
1024 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1025 not changing the active code.
1026
1027 Print executed "if" and "elsif" statements when debugging is used. This
1028 helps a great deal to understand what a filter does.
1029
1030 Document more things not specified clearly in RFC3028. I had all this
1031 sorted out, when out of a sudden new issues came to my mind. Oops."
1032
df199fec
PH
1033PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1034 (Bugzilla #53).
1035
d27f1df3
PH
1036PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1037 canonical form (as documented). However, after a host name lookup from
1038 the IP address, check_host() was doing a simple string comparison with
1039 addresses acquired from the DNS when checking that the found name did
1040 have the original IP as one of its addresses. Since any found IPv6
1041 addresses are likely to be in abbreviated form, the comparison could
1042 fail. Luckily, there already exists a function for doing the comparison
1043 by converting both addresses to binary, so now that is used instead of
1044 the text comparison.
1045
96776534
PH
1046PH/20 There was another similar case to PH/19, when a complete host name was
1047 given in a host list; looking up its IP address could give an abbreviated
1048 form, whereas the current host's name might or might not be abbreviated.
1049 The same fix has been applied.
1050
5de37277 1051
9a799bc0
PH
1052Exim version 4.54
1053-----------------
1054
1055PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1056 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1057 It now does.
1058
99a4b039
PH
1059PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1060 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1061
1062PH/03 Typo: missing ".o" in src/pcre/Makefile.
1063
4b233853
PH
1064PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1065 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1066 Also, for "Auto-Submitted", treat anything other than "no" as
1067 non-personal, in accordance with RFC 3834. (Previously it treated
1068 anything starting "auto-" as non-personal.)
1069
8857ccfd
PH
1070TF/01 The control=submission/name=... option had a problem with syntax
1071 errors if the name included a slash character. The /name= option
1072 now slurps the rest of the string, so it can include any characters
1073 but it must come last in the list of options (after /sender_retain
1074 or /domain=).
1075
433a2980
PH
1076PH/05 Some modifications to the interface to the fake nameserver for the new
1077 testing suite.
1078
3e46c1aa 1079
9a799bc0 1080
e3a311ba
TK
1081Exim version 4.53
1082-----------------
1083
1084TK/01 Added the "success_on_redirect" address verification option. See
1085 NewStuff for rationale and an example.
1086
13b685f9
PH
1087PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1088
395ff96d
PH
1089PH/02 Patch to exigrep to allow it to work on syslog lines.
1090
5b68f6e4
PH
1091PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1092 fread() to skip over the body file's header line, because in Cygwin the
1093 header line is locked and is inaccessible.
1094
1ab52c69
PH
1095PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1096 co-exist for some time) to make it clear that it is the Exim ID that is
1097 referenced, not the Message-ID: header line.
1098
b07e6aa3
PH
1099PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1100 string_format() function, because snprintf() does not exist on all
1101 operating systems.
1102
254e032f
PH
1103PH/06 The use of forbid_filter_existstest now also locks out the use of the
1104 ${stat: expansion item.
1105
3af76a81
PH
1106PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1107 protocol synchronization error", to keep the pedants happy.
1108
2548ba04
PH
1109PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1110 well as for IRIX systems, when gcc is being used. See the host.c source
1111 file for comments.
1112
b6c6011d
PH
1113PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1114
cf39cf57
PH
1115PH/10 Named domain lists were not working if used in a queue_smtp_domains
1116 setting.
1117
f1513293
PH
1118PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1119 transport and to the smtp transport in LMTP mode.
1120
727549a4
PH
1121TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1122
af46795e
PH
1123PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1124 run a filter in a subprocess. This could lead to confusion in subsequent
1125 lookups in the parent process. There should also be a search_tidyup() at
1126 the end of the subprocess.
1127
d7b47fd0
PH
1128PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1129 only if the host matched helo_try_verify_hosts, which caused the
1130 verification to occur when the EHLO/HELO command was issued. The ACL just
1131 tested the remembered result. Now, if a previous verification attempt has
1132 not happened, "verify = helo" does it there and then.
1133
ee744174
JJ
1134JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1135
b582ab87
PH
1136TK/03 Fix log output including CR from clamd.
1137
41a13e0a
PH
1138PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1139 exist provoked a memory error which could cause a segfault.
1140
f625cc5a
PH
1141PH/15 Installed PCRE 6.2
1142
1143PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1144
21f7af35
PH
1145PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1146 of the problem. Specifically, suggested +O2 rather than +O1 for the
1147 HP-UX compiler.
1148
31480e42
PH
1149PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1150
2d280592
PH
1151PH/20 If a delivery was routed to a non-standard port by means of an SRV
1152 record, the port was not correctly logged when the outgoing_port log
1153 selector was set (it logged the transort's default port).
1154
7cd1141b
PH
1155PH/21 Added support for host-specific ports to manualroute, queryprogram,
1156 fallback_hosts, and "hosts" in the smtp transport.
1157
1158PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1159 host errors such as "Connection refused".
1160
750af86e
PH
1161PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1162 authentication with radiusclient 0.4.9:
1163
1164 - Error returned from rc_read_config was caught wrongly
1165 - Username/password not passed on to radius server due to wrong length.
1166
1167 The presumption is that some radiusclient API changes for 4.51/PH/17
1168 were not taken care of correctly. The code is still untested by me (my
1169 Linux distribution still has 0.3.2 of radiusclient), but it was
1170 contributed by a Radius user.
1171
1172PH/24 When doing a callout, the value of $domain wasn't set correctly when
1173 expanding the "port" option of the smtp transport.
1174
4304270b
TK
1175TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1176 while reading a MIME header. Thanks to Tom Hughes for a patch.
1177
750af86e
PH
1178PH/24 Include config.h inside local_scan.h so that configuration settings are
1179 available.
1180
64ffc24f
PH
1181PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1182 that in an ACL for RCPT (for example), you can examine exactly what was
1183 received.
1184
5dd9625b
PH
1185PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1186 commands, but it was not correctly comparing the address with the actual
1187 client host address. Thus, it would show the EHLO address in Received:
1188 header lines when this was not necessary.
1189
5591031b
PH
1190PH/27 Added the % operator to ${eval:}.
1191
ba18e66a
PH
1192PH/28 Exim tries to create and chdir to its spool directory when it starts;
1193 it should be ignoring failures (because with -C, for example, it has lost
1194 privilege). It wasn't ignoring creation failures other than "already
1195 exists".
1196
9cec981f
PH
1197PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1198 -bV or -d is used.
1199
aa2b5c79
PH
1200PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1201 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1202 too many continuations, the temporary file was not being removed, and the
1203 return code was incorrect.
aa2b5c79 1204
48a53b7f
PH
1205PH/31 Missing "BOOL" in function definition in filtertest.c.
1206
1c59d63b
PH
1207PH/32 Applied Sieve patches from the maintainer.
1208
671012da
TK
1209TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1210
1509d3a8
PH
1211PH/33 Added "verify = not_blind".
1212
1213PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1214 Local/Makefile (with some defaults set). These are used in built scripts
1215 such as exicyclog, but they have never been used in the exim_install
1216 script (though there are many overriding facilities there). I have
1217 arranged that the exim_install script now takes note of these two
1218 settings.
1219
1220PH/35 Installed configuration files for Dragonfly.
1221
2fe1a124
PH
1222PH/36 When a locally submitted message by a trusted user did not contain a
1223 From: header, and the sender address was obtained from -f or from an SMTP
1224 MAIL command, and the trusted user did not use -F to supply a sender
1225 name, $originator_name was incorrectly used when constructing a From:
1226 header. Furthermore, $originator_name was used for submission mode
1227 messages from external hosts without From: headers in a similar way,
1228 which is clearly wrong.
1229
8800895a
PH
1230PH/37 Added control=suppress_local_fixups.
1231
ccfdb010
PH
1232PH/38 When log_selector = +received_sender was set, and the addition of the
1233 sender made the log line's construction buffer exactly full, or one byte
1234 less than full, an overflow happened when the terminating "\n" was
1235 subsequently added.
1236
1130bfb0
PH
1237PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1238 when the result of a list match is failure because a DNS lookup failed.
1239
ebcb507f
PH
1240PH/40 RM_COMMAND is now used in the building process.
1241
c35e155c
PH
1242PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1243 the "build-* directories that it finds.
1244
95d1f782
PH
1245PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1246 address in a domain literal was a prefix of an interface address.
1247
fd6de02e
PH
1248PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1249 when verifying a sender address, unless rewrite_headers is false.
1250
58de37c5
PH
1251PH/44 Wrote a long comment about why errors_to addresses are verified as
1252 recipients, not senders.
1253
261cf466
TF
1254TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1255 the ratelimit ACL was added.
1256
3ee512ff
PH
1257PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1258
e08c430f
PH
1259PH/46 Added extra information about PostgreSQL errors to the error string.
1260
bef5a11f
PH
1261PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1262 avoiding the need to install special zones in a real server. This is
1263 backwards compatible; if it can't find the fake resolver, it drops back.
1264 Thus, both old and new test suites can be run.
1265
7546de58
TF
1266TF/02 Added util/ratelimit.pl
1267
e5d5a95f
TF
1268TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1269 clock is set back in time.
1270
2e88a017
TF
1271TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1272 Candler <B.Candler@pobox.com>.
1273
a5f65aa4
TF
1274TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1275 OK for addresses that are the result of redirections.
1276
e7726cbf
PH
1277PH/48 A number of further additions for the benefit of the new test suite,
1278 including a fake gethostbyname() that interfaces to the fake DNS resolver
1279 (see PH/47 above).
1280
a7fdad5b
TF
1281TF/06 The fix for widen_domains has also been applied to qualify_single and
1282 search_parents which are the other dnslookup options that can cause
1283 header rewrites.
1284
6af56900
PH
1285PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1286 type ("H").
1287
0925ede6
PH
1288PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1289
66afa403
TF
1290TF/07 Exim produced the error message "an SRV record indicated no SMTP
1291 service" if it encountered an MX record with an empty target hostname.
1292 The message is now "an MX or SRV record indicated no SMTP service".
1293
0154e85a
TF
1294TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1295 if the DNS of the sending site is misconfigured. This is quite a
1296 common situation. This change restores the behaviour of treating a
1297 helo verification defer as a failure.
1298
16f12c76
PH
1299PH/51 If self=fail was set on a router, the bounce message did not include the
1300 actual error message.
1301
bbe902f0 1302
e5a9dba6
PH
1303Exim version 4.52
1304-----------------
1305
1306TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1307
22c3b60b
PH
1308PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1309 command itself ended in error, the underlying message about the transport
1310 filter timeout was being overwritten with the pipe command error. Now the
1311 underlying error message should be appended to the second error message.
1312
06a9b4b5
PH
1313TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1314
c1ac6996
PH
1315PH/02 Reduce the amount of output that "make" produces by default. Full output
1316 can still be requested.
1317
9c7a242c
PH
1318PH/03 The warning log line about a condition test deferring for a "warn" verb
1319 was being output only once per connection, rather than after each
1320 occurrence (because it was using the same function as for successful
1321 "warn" verbs). This seems wrong, so I have changed it.
1322
87ba3f5f
PH
1323TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1324 it should not have, which might have caused a crash in the right
1325 circumstances, but probably never did.
1326
1327PH/04 Installed a modified version of Tony Finch's patch to make submission
1328 mode fix the return path as well as the Sender: header line, and to
1329 add a /name= option so that you can make the user's friendly name appear
1330 in the header line.
1331
29aba418
TF
1332TF/03 Added the control = fakedefer ACL modifier.
1333
fe0dab11
TF
1334TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1335 Mark Lowes for thorough testing.
870f6ba8 1336
11d337a4
TK
1337TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1338
1339TK/03 Merged latest SRS patch from Miles Wilton.
1340
415c8f3b
PH
1341PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1342 with the definition in sysexits.h (which is #included earlier).
1343 Fortunately, Exim does not actually use EX_OK. The code used to try to
1344 preserve the sysexits.h value, by assumimg that macro definitions were
1345 scanned for macro replacements. I have been disabused of this notion,
1346 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1347
958541e9
PH
1348PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1349 in the smtp transport. When a block could not be written in a single
1350 write() function, the timeout was being re-applied to each part-write.
1351 This seems wrong - if the receiver was accepting one byte at a time it
1352 would take for ever. The timeout is now adjusted when this happens. It
1353 doesn't have to be particularly precise.
1354
c206415f
TK
1355TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1356 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1357
2a4be8f9
PH
1358PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1359 without a domain if the check to <postmaster@domain> fails.
1360
1cba11c5
SC
1361SC/01 Eximstats: added -xls and the ability to specify output files
1362 (patch written by Frank Heydlauf).
1363
1364SC/02 Eximstats: use FileHandles for outputing results.
1365
1366SC/03 Eximstats: allow any combination of xls, txt, and html output.
1367
1368SC/04 Eximstats: fixed display of large numbers with -nvr option
1369
1370SC/05 Eximstats: fixed merging of reports with empty tables.
1371
1372SC/06 Eximstats: added the -include_original_destination flag
1373
1374SC/07 Eximstats: removed tabs and trailing whitespace.
1375
1005d00e
TK
1376TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1377
1378TK/06 MBOX spool code: Add real "From " MBOX separator line
1379 so the .eml file is really in mbox format (even though
1380 most programs do not really care). Patch from Alex Miller.
1381
1382TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1383 The latter is generated from $received_to and is only set if the
1384 message has one envelope recipient. SA can use these headers,
1385 obviously out-of-the-box. Patch from Alex Miller.
1386
9b4768fa
PH
1387PH/08 The ${def test on a variable was returning false if the variable's
1388 value was "0", contrary to what the specification has always said!
1389 The result should be true unless the variable is empty.
1390
1391PH/09 The syntax error of a character other than { following "${if
1392 def:variable_name" (after optional whitespace) was not being diagnosed.
1393 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1394 accidental colon was present, for example, could give incorrect results.
1395
0d7eb84a
PH
1396PH/10 Tidied the code in a number of places where the st_size field of a stat()
1397 result is used (not including appendfile, where other changes are about
1398 to be made).
1399
1400PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1401 This involved changing a lot of size variables from int to off_t. It
1402 should work with maildirs and everything.
1403
40727bee
TK
1404TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1405 spamd dying while we are connected to it.
1406
554d2369
TF
1407TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1408 <jgh@wizmail.org>
1409
1f922db1
PH
1410PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1411 function for BDB 4.3.
1412
ef213c3b
PH
1413PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1414
8ac170f3
PH
1415PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1416 the sources for PCRE have been re-arranged and more files are now
1417 involved.
1418
b1c749bb
PH
1419PH/15 The code I had for printing potentially long long variables in PH/11
1420 above was not the best (it lost precision). The length of off_t variables
1421 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1422 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1423 to be "long long int" or "long int". This is needed for the internal
1424 formatting function string_vformat().
b1c749bb 1425
4aac9b49
PH
1426PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1427 the configuration file to be ":syslog", then the script "guesses" where
1428 the logs files are, rather than using the compiled in default. In our
1429 case the guess is not the same as the compiled default, so the script
1430 suddenly stopped working when I started to use syslog. The patch checks
1431 to see if log_file_path is "". If so, it attempts to read it from exim
1432 with no configuration file to get the compiled in version, before it
1433 falls back to the previous guessing code."
1434
294520c8
TK
1435TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1436 implementing BATV in an Exim configuration. See NewStuff for the gory
1437 details.
1438
5bd022fe
PH
1439PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1440 Makefile that are specific to HP-UX.
1441
90e9ce59
PH
1442PH/18 If the "use_postmaster" option was set for a recipient callout together
1443 with the "random" option, the postmaster address was used as the MAIL
1444 FROM address for the random test, but not for the subsequent recipient
1445 test. It is now used for both.
1446
5ea81592
PH
1447PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1448 patch removes a few documentation additions to RFC 3028, because the
1449 latest draft now contains them. It adds the new en;ascii-case comparator
1450 and a new error check for 8bit text in MIME parts. Comparator and
1451 require names are now matched exactly. I enabled the subaddress
1452 extension, but it is not well tested yet (read: it works for me)."
1453
c6c2dc1d
PH
1454PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1455 rework some of the code of TK/09 above to avoid the hardwired use of
1456 "%lld" and "long long". Replaced the call to snprintf() with a call to
1457 string_vformat().
1458
fffffe4c
PH
1459PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1460 records point to non-existent hosts", "retry timeout exceeded", and
1461 "retry time not reached for any host after a long failure period".
ca02eafb 1462
9a26b6b2
PH
1463PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1464 experimental DomainKeys support:
1465
1466 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1467 (2) On an error such as an illegally used "control", the wrong name for
1468 the control was given.
1469
1470 These problems did NOT occur unless DomainKeys support was compiled.
1471
4aee0225
PH
1472PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1473
32d668a5
PH
1474PH/24 Added ${if match_ip condition.
1475
8187c3f3
PH
1476PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1477 databases so that it will be absolutely obvious if a crash occurs in the
1478 DB library. This is a regular occurrence (often caused by mis-matched
1479 db.h files).
1480
ff790e47 1481PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1482 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1483 picked up on a user's system that detects such things. There doesn't seem
1484 to be a gcc warning option for this - only an attribute that has to be
1485 put on the function's prototype. It seems that in Fedora Core 4 they have
1486 set this on a number of new functions. No doubt there will be more in due
1487 course.
ff790e47 1488
5417f6d1
PH
1489PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1490 specify a transport. However, if an address that was verified by such a
1491 router was the subject of a callout, Exim crashed because it tried to
1492 read the rcpt_include_affixes from the non-existent transport. Now it
1493 just assumes that the setting of that option is false. This bug was
1494 introduced by 4.51/PH/31.
1495
59cf8544
PH
1496PH/28 Changed -d+all to exclude +memory, because that information is very
1497 rarely of interest, but it makes the output a lot bigger. People tend to
1498 do -d+all out of habit.
1499
e7ad8a65
PH
1500PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1501 code in os-type was giving problems when libc.so lives in lib64, like on
1502 x86_64 Fedora Core.
1503
ade42478
PH
1504PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1505 aren't the modern standard, and it seems that some systems' include files
1506 don't always have them. Exim was already checking for some of the newer
1507 ones like T_AAAA, and defining it itself. I've added checks for all the
1508 record types that Exim uses.
1509
182ad5cf
PH
1510PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1511 not automatically generating a new one, as it is supposed to. This
1512 prevented TLS from working. If the file did exist, but contained invalid
1513 data, a new version was generated, as expected. It was only the case of a
1514 non-existent file that was broken.
1515
b0d9fc80
TK
1516TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1517 with a change in libdomainkeys > 0.64.
1518
1519TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1520 from DNS. If the selector record carries the flag, it now has
1521 precedence over the domain-wide flag.
1522
1523TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1524
47c7a64a
PH
1525PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1526 the use of a port name that isn't defined in /etc/services) occurred, the
1527 message was deferred as in a normal delivery, and thus remained on the
1528 spool, instead of being failed because of the mua_wrapper setting. This
1529 is now fixed, and I tidied up some of the mua_wrapper messages at the
1530 same time.
1531
a388bce4
SC
1532SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1533 the messages in a hash of arrays rather than using individual hashes.
1534 This is a bit cleaner and results in dramatic memory savings, albeit
1535 at a slight CPU cost.
1536
1537SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1538 as requested by Marc Sherman.
1539
1540SC/10 Eximstats: added histograms for user specified patterns as requested
1541 by Marc Sherman.
1542
0793e4ed
SC
1543SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1544
c58b88df
PH
1545PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1546 fopen() in the content-scanning modules that did not already have it.
1547
e7ad8a65 1548
7982096b
PH
1549Exim version 4.51
1550-----------------
1551
1a46a8c5
PH
1552TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1553 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1554
2f079f46 1555TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1556
1557TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1558
1559PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1560 to test Sieve filters that use "vacation".
1561
1562PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1563 that changes the way the GnuTLS parameters are stored in the cache file.
1564 The new format can be generated externally. For backward compatibility,
1565 if the data in the cache doesn't make sense, Exim assumes it has read an
1566 old-format file, and it generates new data and writes a new file. This
1567 means that you can't go back to an older release without removing the
1568 file.
1569
1570PH/03 A redirect router that has both "unseen" and "one_time" set does not
1571 work if there are any delivery delays because "one_time" forces the
1572 parent to be marked "delivered", so its unseen clone is never tried
1573 again. For this reason, Exim now forbids the simultaneous setting of
1574 these two options.
1575
1576PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1577 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1578 entry if you want to know the details. The fix, however, neglected to
1579 consider the case when local delivery batching is involved. The test for
1580 "previously delivered" was not happening when checking to see if an
1581 address could be batched with a previous (undelivered) one; under
1582 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1583 address.
1a46a8c5
PH
1584
1585PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1586 in its include files, and this causes problems building Exim.
1587
1588PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1589 header_syntax) but Exim was just ignoring anything given after a slash.
1590 In particular, this caused confusion with an attempt to use "verify =
1591 reverse_host_lookup/defer_ok". An error is now given when options are
1592 supplied for verify items that do not have them. (Maybe reverse_host_
1593 lookup should have a defer_ok option, but that's a different point.)
1594
1595PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1596 defined by RFC 821) to 2048, because there were problems with some AUTH
1597 commands, and RFC 1869 says the size should be increased for extended
1598 SMTP commands that take arguments.
1599
1600PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1601 Finch).
1602
1603PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1604 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1605
49c2d5ea
PH
1606PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1607 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1608 whatever). Otherwise the password may appear in the log. Following change
1609 PH/42 below, there is no longer a chance of it appearing in a bounce
1610 message.
49c2d5ea 1611
bf759a8b
PH
1612PH/11 Installed exipick version 20050225.0 from John Jetmore.
1613
83364d30
PH
1614PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1615 of its addresses was ever tried. (Bugzilla bug #2.)
1616
7999bbd7
PH
1617PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1618 the result incorrectly in the debug output. (It correctly added a newline
1619 to what was transported.)
1620
7dbf77c9
PH
1621TF/01 Added $received_time.
1622
74e0617f
PH
1623PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1624 commented out examples of how to interface to a virus scanner and to
1625 SpamAssassin. Also added commented examples of av_scanner and
1626 spamd_address settings.
1627
2f079f46
PH
1628PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1629 and controls are allowed in which ACLs. There were a couple of minor
1630 errors. Some of the entries in the conditions table (which is a table of
1631 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1632 negation of where the condition IS allowed.
1633
8c841523
PH
1634PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1635
7766a4f0
PH
1636PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1637 header file does not have a version number, so I've had to invent a new
1638 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1639 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1640 radiusclient), but it was contributed by a Radius user.
1641
8b417f2c
PH
1642PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1643 files or directories, for OpenSSL.
1644
901f42cb
PH
1645PH/19 When an Exim process that is running as root has to create an Exim log
1646 file, it does so in a subprocess that runs as exim:exim so as to get the
1647 ownership right at creation (otherwise, other Exim processes might see
1648 the file with the wrong ownership). There was no test for failure of this
1649 fork() call, which would lead to the process getting stuck as it waited
1650 for a non-existent subprocess. Forks do occasionally fail when resources
1651 run out. I reviewed all the other calls to fork(); they all seem to check
1652 for failure.
1653
f9b9210e
PH
1654PH/20 When checking for unexpected SMTP input at connect time (before writing
1655 the banner), Exim was not dealing correctly with a non-positive return
1656 from the read() function. If the client had disconnected by this time,
1657 the result was a log entry for a synchronization error with an empty
1658 string after "input=" when read() returned zero. If read() returned -1
1659 (an event I could not check), uninitialized data bytes were printed.
1660 There were reports of junk text (parts of files, etc) appearing after
1661 "input=".
1662
54cdb463
PH
1663PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1664
cf00dad6
PH
1665PH/22 Added support for macro redefinition, and (re)definition in between
1666 driver and ACL definitions.
1667
acb1b346
PH
1668PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1669 forgetting to use the resulting value; it was using the unexpanded value.
1670
c5ddb310
PH
1671PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1672 hadn't been configured. The fix is from Juergen Kreileder, who
1673 understands it better than I do:
1674
1675 "Here's what I see happening with three configured cyrus_sasl
1676 authenticators configured (plain, login, cram-md5):
1677
1678 On startup auth_cyrus_sasl_init() gets called for each of these.
1679 This means three calls to sasl_listmech() without a specified mech_list.
1680 => SASL tests which mechs of all available mechs actually work
1681 => three warnings about OTP not working
1682 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1683
1684 With the patch, sasl_listmech() also gets called three times. But now
1685 SASL's mech_list option is set to the server_mech specified in the the
1686 authenticator. Or in other words, the answer from sasl_listmech()
1687 gets limited to just the mech you're testing for (which is different
1688 for each call.)
1689 => the return list contains just 'plain' or 'login', 'cram-md5' or
1690 nothing depending on the value of ob->server_mech.
1691
1692 I've just tested the patch: Authentication still works fine,
1693 unavailable mechs specified in the exim configuration are still
1694 caught, and the auth.log warnings about OTP are gone."
1695
31619da6
PH
1696PH/25 When debugging is enabled, the contents of the command line are added
1697 to the debugging output, even when log_selector=+arguments is not
1698 specified.
1699
bebaf0fc
PH
1700PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1701 answer is "GNU", and only if the return is "GNU/something" is the answer
1702 "Linux".
1703
475fe28a
PH
1704PH/27 $acl_verify_message is now set immediately after the failure of a
1705 verification in an ACL, and so is available in subsequent modifiers. In
1706 particular, the message can be preserved by coding like this:
1707
1708 warn !verify = sender
1709 set acl_m0 = $acl_verify_message
1710
1711 Previously, $acl_verify_message was set only while expanding "message"
1712 and "log_message" when a very denied access.
1713
7e8bec7a
PH
1714PH/28 Modified OS/os.c-Linux with
1715
1716 -#ifndef OS_LOAD_AVERAGE
1717 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1718
1719 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1720 nomenclature these days.)
1721
e4a89c47
PH
1722PH/29 Installed patch from the Sieve maintainer that adds the options
1723 sieve_useraddress and sieve_subaddress to the redirect router.
1724
5ca2a9a1
PH
1725PH/30 In these circumstances:
1726 . Two addresses routed to the same list of hosts;
1727 . First host does not offer TLS;
1728 . First host accepts first address;
1729 . First host gives temporary error to second address;
1730 . Second host offers TLS and a TLS session is established;
1731 . Second host accepts second address.
1732 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1733 and peerdn, if requested) that were in fact used only for the second
1734 address.
7e8bec7a 1735
c688b954
PH
1736PH/31 When doing a callout as part of verifying an address, Exim was not paying
1737 attention to any local part prefix or suffix that was matched by the
1738 router that accepted the address. It now behaves in the same way as it
1739 does for delivery: the affixes are removed from the local part unless
1740 rcpt_include_affixes is set on the transport.
1741
fed77020
PH
1742PH/32 Add the sender address, as F=<...>, to the log line when logging a
1743 timeout during the DATA phase of an incoming message.
1744
7fe1560f
PH
1745PH/33 Sieve envelope tests were broken for match types other than :is. I have
1746 applied a patch sanctioned by the Sieve maintainer.
c688b954 1747
ebb6e6d5
PH
1748PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1749 the uid or gid is negative. A case of a negative gid caused this to be
1750 noticed. The fix allows for either to be negative.
1751
9c4e8f60
PH
1752PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1753 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1754 overlooked.
1755
1756PH/36 The change PH/12 above was broken. Fixed it.
1757
d7174846
PH
1758PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1759 the grounds that routing the same address twice would always produce the
1760 same answer. This might have been true once, but it is certainly no
1761 longer true now. Routing a child address may depend on the previous
1762 routing that produced that child. Some complicated redirection strategies
1763 went wrong when messages had multiple recipients, and made Exim's
1764 behaviour dependent on the order in which the addresses were given.
1765
1766 I have moved the duplicate checking until after the routing is complete.
1767 Exim scans the addresses that are assigned to local and remote
1768 transports, and removes any duplicates. This means that more work will be
1769 done, as duplicates will always all be routed, but duplicates are
1770 presumably rare, so I don't expect this is of any significance.
1771
1772 For deliveries to pipes, files, and autoreplies, the duplicate checking
1773 still happens during the routing process, since they are not going to be
1774 routed further.
1775
cfe75fc3
PH
1776PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1777 It corrects a timeout issue with spamd. This is Ian's comment: "The
1778 background is that sometimes spamd either never reads data from a
1779 connection it has accepted, or it never writes response data. The exiscan
1780 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1781 blindly assumes that writes won't block so it may never time out."
1782
be22d70e
PH
1783PH/39 Allow G after quota size as well as K and M.
1784
0612b098
PH
1785PH/40 The value set for $authenticated_id in an authenticator may not contain
1786 binary zeroes or newlines because the value is written to log lines and
1787 to spool files. There was no check on this. Now the value is run through
1788 the string_printing() function so that such characters are converted to
1789 printable escape sequences.
1790
2e0c1448
PH
1791PH/41 $message_linecount is a new variable that contains the total number of
1792 lines in the message. Compare $body_linecount, which is the count for the
1793 body only.
1794
447d236c
PH
1795PH/42 Exim no longer gives details of delivery errors for specific addresses in
1796 bounce and delay warning messages, except in certain special cases, which
1797 are as follows:
1798
1799 (a) An SMTP error message from a remote host;
1800 (b) A message specified in a :fail: redirection;
1801 (c) A message specified in a "fail" command in a system filter;
1802 (d) A message specified in a FAIL return from the queryprogram router;
1803 (e) A message specified by the cannot_route_message router option.
1804
1805 In these cases only, Exim does include the error details in bounce and
1806 warning messages. There are also a few cases where bland messages such
1807 as "unrouteable address" or "local delivery error" are given.
1808
d20976dc
PH
1809PH/43 $value is now also set for the "else" part of a ${run expansion.
1810
f656d135
PH
1811PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1812 being worked on, but at least Exim now implements the latest version to
1813 play with."
1814
2e2a30b4
PH
1815PH/45 In a pipe transport, although a timeout while waiting for the pipe
1816 process to complete was treated as a delivery failure, a timeout while
1817 writing the message to the pipe was logged, but erroneously treated as a
1818 successful delivery. Such timeouts include transport filter timeouts. For
1819 consistency with the overall process timeout, these timeouts are now
1820 treated as errors, giving rise to delivery failures by default. However,
1821 there is now a new Boolean option for the pipe transport called
1822 timeout_defer, which, if set TRUE, converts the failures into defers for
1823 both kinds of timeout. A transport filter timeout is now identified in
1824 the log output.
1825
9176e9f0
PH
1826PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1827 systems where "make" and "gmake" are different, calling "gmake" at top
1828 level broke things. I've arranged for the value of $(MAKE) to be passed
1829 from the Makefile to this script so that it can call the same version of
1830 "make".
1831
7982096b 1832
bbe902f0
PH
1833A note about Exim versions 4.44 and 4.50
1834----------------------------------------
1835
1836Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1837changes of various kinds. As a consequence, a big documentation update was
1838needed. This delayed the release for rather longer than seemed good, especially
1839in the light of a couple of (minor) security issues. Therefore, the changes
1840that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1841release. So 4.44 and 4.50 are in effect two different branches that both start
1842from 4.43.
1843
1844I have left the 4.50 change log unchanged; it contains all the changes since
18454.43. The change log for 4.44 is below; many of its items are identical to
1846those for 4.50. This seems to be the most sensible way to preserve the
1847historical information.
1848
1849
f7b63901 1850Exim version 4.50
495ae4b0
PH
1851-----------------
1852
5fe762f6
PH
1853 1. Minor wording change to the doc/README.SIEVE file.
1854
139059f6 1855 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1856 computation of the current number of files was incorrect.
495ae4b0 1857
7086e875
PH
1858 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1859 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1860 place.
1861
35af9f61
PH
1862 4. Give more explanation in the error message when the command for a transport
1863 filter fails to execute.
1864
b668c215
PH
1865 5. There are several places where Exim runs a non-Exim command in a
1866 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1867 was being done only for the command run by the queryprogram router. It is
1868 now done for all such subprocesses. The other cases are: ${run, transport
1869 filters, and the commands run by the lmtp and pipe transports.
1870
a494b1e1
PH
1871 6. Added CONFIGURE_GROUP build-time option.
1872
1873 7. Some older OS have a limit of 256 on the maximum number of file
1874 descriptors. Exim was using setrlimit() to set 1000 as a large value
1875 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1876 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1877
c5fcb476
PH
1878 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1879 was an oversight, and furthermore, ever since the addition of extra
1880 controls (e.g. 4.43/32), the checks on when to allow different forms of
1881 "control" were broken. There should now be diagnostics for all cases when a
1882 control that does not make sense is encountered.
1883
69358f02
PH
1884 9. Added the /retain_sender option to "control=submission".
1885
5be20824
PH
188610. $recipients is now available in the predata ACL (oversight).
1887
eb2c0248
PH
188811. Tidy the search cache before the fork to do a delivery from a message
1889 received from the command line. Otherwise the child will trigger a lookup
1890 failure and thereby defer the delivery if it tries to use (for example) a
1891 cached ldap connection that the parent has called unbind on.
1892
2a3eea10
PH
189312. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1894 of $address_data from the recipient verification was clobbered by the
1895 sender verification.
1896
189713. The value of address_data from a sender verification is now available in
1898 $sender_address_data in subsequent conditions in the ACL statement.
1899
23c7ff99
PH
190014. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1901
4deaf07d
PH
190215. Added a new option "connect=<time>" to callout options, to set a different
1903 connection timeout.
1904
926e1192
PH
190516. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1906 was its contents. (It was OK if the option was not defined at all.)
1907
650edc6f
PH
190817. A "Completed" log line is now written for messages that are removed from
1909 the spool by the -Mrm option.
1910
2c7db3f5
PH
191118. New variables $sender_verify_failure and $recipient_verify_failure contain
1912 information about exactly what failed.
1913
3d235903
PH
191419. Added -dd to debug only the daemon process.
1915
7c7ad977
PH
191620. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1917 handles timeouts, both on the server side and network timeouts. Renamed the
1918 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1919
981756db
PH
192021. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1921 It is now set to "smtps".
1922
d4eb88df
PH
192322. $host_address is now set to the target address during the checking of
1924 ignore_target_hosts.
1925
192623. When checking ignore_target_hosts for an ipliteral router, no host name was
1927 being passed; this would have caused $sender_host_name to have been used if
1928 matching the list had actually called for a host name (not very likely,
1929 since this list is usually IP addresses). A host name is now passed as
1930 "[x.x.x.x]".
1931
7d468ab8
PH
193224. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1933 code that specifies a non-restarting handler (typically sigaction() in
1934 modern systems) in an attempt to fix a rare and obscure crash bug.
1935
193625. Narrowed the window for a race in the daemon that could cause it to ignore
1937 SIGCHLD signals. This is not a major problem, because they are used only to
1938 wake it up if nothing else does.
1939
62c0818f
PH
194026. A malformed maildirsize file could cause Exim to calculate negative values
1941 for the mailbox size or file count. Odd effects could occur as a result.
1942 The maildirsize information is now recalculated if the size or filecount
1943 end up negative.
1944
26034054
PH
194527. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1946 support for a long time. Removed HAVE_SYS_VFS_H.
1947
af66f652
PH
194828. Installed the latest version of exipick from John Jetmore.
1949
90af77f4
PH
195029. In an address list, if the pattern was not a regular expression, an empty
1951 subject address (from a bounce message) matched only if the pattern was an
1952 empty string. Non-empty patterns were not even tested. This was the wrong
1953 because it is perfectly reasonable to use an empty address as part of a
1954 database query. An empty address is now tested by patterns that are
1955 lookups. However, all the other forms of pattern expect the subject to
1956 contain a local part and a domain, and therefore, for them, an empty
1957 address still always fails if the pattern is not itself empty.
1958
d8ef3577
PH
195930. Exim went into a mad DNS loop when attempting to do a callout where the
1960 host was specified on an smtp transport, and looking it up yielded more
1961 than one IP address.
1962
5cb8cbc6
PH
196331. Re-factored the code for checking spool and log partition space into a
1964 function that finds that data and another that does the check. The former
1965 is then used to implement four new variables: $spool_space, $log_space,
1966 $spool_inodes, and $log_inodes.
1967
14702f5b
PH
196832. The RFC2047 encoding function was originally intended for short strings
1969 such as real names; it was not keeping to the 75-character limit for
1970 encoded words that the RFC imposes. It now respects the limit, and
1971 generates multiple encoded words if necessary. To be on the safe side, I
1972 have increased the buffer size for the ${rfc2047: expansion operator from
1973 1024 to 2048 bytes.
1974
063b1e99
PH
197533. It is now permitted to omit both strings after an "if" condition; if the
1976 condition is true, the result is "true". As before, when the second string
1977 is omitted, a false condition yields an empty string. This makes it less
1978 cumbersome to write custom ACL and router conditions.
1979
652e1b65
PH
198034. Failure to deliver a bounce message always caused it to be frozen, even if
1981 there was an errors_to setting on the router. The errors_to setting is now
1982 respected.
1983
6f0c9a4f
PH
198435. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1985 canonical form (fully expanded) before being placed in
1986 $sender_host_address.
1987
33397d19
PH
198836. The table in the code that translates DNS record types into text (T_A to
1989 "A" for instance) was missing entries for NS and CNAME. It is just possible
1990 that this could have caused confusion if both these types were looked up
1991 for the same domain, because the text type is used as part of Exim's
1992 per-process caching. But the chance of anyone hitting this buglet seems
1993 very small.
1994
7bb56e1f
PH
199537. The dnsdb lookup has been extended in a number of ways.
1996
1997 (1) There is a new type, "zns", which walks up the domain tree until it
1998 finds some nameserver records. It should be used with care.
1999
ea3bc19b
PH
2000 (2) There is a new type, "mxh", which is like "mx" except that it returns
2001 just the host names, not the priorities.
2002
2003 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2004 looked up. The behaviour when one of the lookups defers can be
2005 controlled by a keyword.
7bb56e1f 2006
ea3bc19b 2007 (4) It is now possible to specify the separator character for use when
7bb56e1f 2008 multiple records are returned.
33397d19 2009
0bcb2a0e
PH
201038. The dnslists ACL condition has been extended: it is now possible to supply
2011 a list of IP addresses and/or domains to be looked up in a particular DNS
2012 domain.
2013
2ac0e484
PH
201439. Added log_selector=+queue_time_overall.
2015
4e1fde53
PH
201640. When running the queue in the test harness, wait just a tad after forking a
2017 delivery process, to get repeatability of debugging output.
2018
de365ded
PH
201941. Include certificate and key file names in error message when GnuTLS fails
2020 to set them up, because the GnuTLS error message doesn't include the name
2021 of the failing file when there is a problem reading it.
2022
f05da2e8
PH
202342. Allow both -bf and -bF in the same test run.
2024
d6453af2
PH
202543. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2026
f7b63901
PH
202744. The "Exiscan patch" is now merged into the mainline Exim source.
2028
202945. Sometimes the final signoff response after QUIT could fail to get
2030 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2031 < 0 before doing a fflush(). This bug looks as though it goes back to the
2032 introduction of TLS in release 3.20, but "sometimes" must have been rare
2033 because the tests only now provoked it.
2034
a444213a
PH
203546. Reset the locale to "C" after calling embedded Perl, in case it was changed
2036 (this can affect the format of dates).
2037
0ec020ea
PH
203847. exim_tidydb, when checking for the continued existence of a message for
2039 which it has found a message-specific retry record, was not finding
2040 messages that were in split spool directories. Consequently, it was
2041 deleting retry records that should have stayed in existence.
2042
b1206957
PH
204348. Steve fixed some bugs in eximstats.
2044
204549. The SPA authentication driver was not abandoning authentication and moving
2046 on to the next authenticator when an expansion was forced to fail,
2047 contradicting the general specification for all authenticators. Instead it
2048 was generating a temporary error. It now behaves as specified.
2049
26dd5a95
PH
205050. The default ordering of permitted cipher suites for GnuTLS was pessimal
2051 (the order specifies the preference for clients). The order is now AES256,
2052 AES128, 3DES, ARCFOUR128.
2053
343b2385
PH
205451. Small patch to Sieve code - explicitly set From: when generating an
2055 autoreply.
2056
1c5466b9
PH
205752. Exim crashed if a remote delivery caused a very long error message to be
2058 recorded - for instance if somebody sent an entire SpamAssassin report back
2059 as a large number of 550 error lines. This bug was coincidentally fixed by
2060 increasing the size of one of Exim's internal buffers (big_buffer) that
2061 happened as part of the Exiscan merge. However, to be on the safe side, I
2062 have made the code more robust (and fixed the comments that describe what
2063 is going on).
2064
55ee9ee3
PH
206553. Now that there can be additional text after "Completed" in log lines (if
2066 the queue_time_overall log selector is set), a one-byte patch to exigrep
2067 was needed to allow it to recognize "Completed" as not the last thing in
2068 the line.
2069
d38f8232
PH
207054. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2071 patch that reportedly fixes this has been added. I am not expert enough to
2072 create a test for it. This is what the patch creator wrote:
2073
2074 "I found a little strange behaviour of ldap code when working with
2075 Windows 2003 AD Domain, where users was placed in more than one
2076 Organization Units. When I tried to give exim partial DN, the exit code
2077 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2078 But simultaneously result of request was absolutely normal ldap result,
2079 so I produce this patch..."
2080
3295e65b
PH
2081 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2082 REFERENCE, so I have modified the code to exclude the patch when that macro
2083 is not defined.
2084
7102e136
PH
208555. Some experimental protocols are using DNS PTR records for new purposes. The
2086 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2087 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2088 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2089 CAN-2005-0021
7102e136 2090
3ca0ba97
PH
209156. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2092
c2bcbe20
PH
209357. Double the size of the debug message buffer (to 2048) so that more of very
2094 long debug lines gets shown.
2095
18ce445d
PH
209658. The exicyclog utility now does better if the number of log files to keep
2097 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2098
1f5b4c3d
PH
209959. Two changes related to the smtp_active_hostname option:
2100
2101 (1) $smtp_active_hostname is now available as a variable.
2102 (2) The default for smtp_banner uses $smtp_active_hostname instead
2103 of $primary_hostname.
2104
b975ba52
PH
210560. The host_aton() function is supposed to be passed a string that is known
2106 to be a valid IP address. However, in the case of IPv6 addresses, it was
2107 not checking this. This is a hostage to fortune. Exim now panics and dies
2108 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2109 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2110 components; fortuitously, this particular loophole had already been fixed
2111 by change 4.50/55 above.
2112
2113 If there are any other similar loopholes, the new check in host_aton()
2114 itself should stop them being exploited. The report I received stated that
2115 data on the command line could provoke the exploit when Exim was running as
2116 exim, but did not say which command line option was involved. All I could
2117 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2118 running as the user.
ea3a6f44 2119 CAN-2005-0021
85b87bc2
PH
2120
212161. There was a buffer overflow vulnerability in the SPA authentication code
2122 (which came originally from the Samba project). I have added a test to the
2123 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2124 CAN-2005-0022
b975ba52 2125
17ffcae7
PH
212662. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2127 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2128
d95f9fdb
PH
212963. The daemon start-up calls getloadavg() while still root for those OS that
2130 need the first call to be done as root, but it missed one case: when
2131 deliver_queue_load_max is set with deliver_drop_privilege. This is
2132 necessary for the benefit of the queue runner, because there is no re-exec
2133 when deliver_drop_privilege is set.
2134
86b8287f
PH
213564. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2136 This has been fixed.
2137
60dc5e56
PH
213865. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2139 was in use, was not putting the data itself into the right store pool;
2140 consequently, it could be overwritten for a subsequent message in the same
2141 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2142 the caching.)
2143
533244af
PH
214466. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2145
a5a28604
PH
214667. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2147 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2148 the function were treating the return as a boolean value, which happened to
2149 work because 0=false and not-0=true, but is not correct code.
2150
7e634d24
PH
215168. The host_aton() function was not handling scoped IPv6 addresses (those
2152 with, for example, "%eth0" on the end) correctly.
2153
3e11c26b
PH
215469. Fixed some compiler warnings in acl.c for the bitmaps specified with
2155 negated items (that is, ~something) in unsigned ints. Some compilers
2156 apparently mutter when there is no cast.
2157
6729cf78
PH
215870. If an address verification called from an ACL failed, and did not produce a
2159 user-specific message (i.e. there was only a "system" message), nothing was
2160 put in $acl_verify_message. In this situation, it now puts the system
2161 message there.
2162
00f00ca5
PH
216371. Change 4.23/11 added synchronization checking at the start of an SMTP
2164 session; change 4.31/43 added the unwanted input to the log line - except
2165 that it did not do this in the start of session case. It now does.
2166
c9bdd01c
PH
216772. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2168 This is wrong and can cause the other end to generate a synchronization
2169 error if it is another Exim or anything else that does the synchronization
2170 check. A QUIT command is no longer sent after a timeout.
2171
d43194df
PH
217273. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2173 during host lookups.
2174
fe5b5d0b
PH
217574. The defer_ok option of callout verification was not working if it was used
2176 when verifying addresses in header lines, that is, for this case:
2177
2178 verify = header_sender/callout=defer_ok
2179
76a2d7ba
PH
218075. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2181 those file descriptors could be used for SMTP connections. If anything
2182 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2183 could be sent to the SMTP client, causing chaos. The daemon now opens
2184 stdin, stdout, and stderr to /dev/null when it puts itself into the
2185 background.
2186
218776. Arrange for output from Perl's "warn" command to be written to Exim's main
2188 log by default. The user can override this with suitable Perl magic.
2189
04f7d5b9
PH
219077. The use of log_message on a "discard" ACL verb, which is supposed to add to
2191 the log message when discard triggers, was not working for the DATA ACL or
2192 for the non-SMTP ACL.
2193
bc60667e
PH
219478. Error message wording change in sieve.c.
2195
bb6e88ff
PH
219679. If smtp_accept_max_per_host was set, the number of connections could be
2197 restricted to fewer than expected, because the daemon was trying to set up
2198 a new connection before checking whether the processes handling previous
2199 connections had finished. The check for completed processes is now done
2200 earlier. On busy systems, this bug wouldn't be noticed because something
2201 else would have woken the daemon, and it would have reaped the completed
2202 process earlier.
2203
1e70f85b
PH
220480. If a message was submitted locally by a user whose login name contained one
2205 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2206 It caused a spool format error. I have fixed the spool reading code. A
2207 related problem was that the "from" clause in the Received: line became
2208 illegal because of the space(s). It is now covered by ${quote_local_part.
2209
221081. Included the latest eximstats from Steve (adds average sizes to HTML Top
2211 tables).
2212
4e01f9d6
PH
221382. Updated OS/Makefile-AIX as per message from Mike Meredith.
2214
1ee1cef2
PH
221583. Patch from Sieve maintainer to fix unterminated string problem in
2216 "vacation" handling.
2217
6e2b4ccc
PH
221884. Some minor changes to the Linux configuration files to help with other
2219 OS variants using glibc.
2220
8e669ac1
PH
222185. One more patch for Sieve to update vacation handling to latest spec.
2222
495ae4b0 2223
bbe902f0
PH
2224----------------------------------------------------
2225See the note above about the 4.44 and 4.50 releases.
2226----------------------------------------------------
2227
2228
2229Exim version 4.44
2230-----------------
2231
2232 1. Change 4.43/35 introduced a bug that caused file counts to be
2233 incorrectly computed when quota_filecount was set in an appendfile
2234 transport
2235
2236 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2237 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2238 place.
2239
2240 3. Give more explanation in the error message when the command for a transport
2241 filter fails to execute.
2242
2243 4. There are several places where Exim runs a non-Exim command in a
2244 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2245 was being done only for the command run by the queryprogram router. It is
2246 now done for all such subprocesses. The other cases are: ${run, transport
2247 filters, and the commands run by the lmtp and pipe transports.
2248
2249 5. Some older OS have a limit of 256 on the maximum number of file
2250 descriptors. Exim was using setrlimit() to set 1000 as a large value
2251 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2252 systems. I've change it so that if it can't get 1000, it tries for 256.
2253
2254 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2255 was an oversight, and furthermore, ever since the addition of extra
2256 controls (e.g. 4.43/32), the checks on when to allow different forms of
2257 "control" were broken. There should now be diagnostics for all cases when a
2258 control that does not make sense is encountered.
2259
2260 7. $recipients is now available in the predata ACL (oversight).
2261
2262 8. Tidy the search cache before the fork to do a delivery from a message
2263 received from the command line. Otherwise the child will trigger a lookup
2264 failure and thereby defer the delivery if it tries to use (for example) a
2265 cached ldap connection that the parent has called unbind on.
2266
2267 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2268 of $address_data from the recipient verification was clobbered by the
2269 sender verification.
2270
227110. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2272 was its contents. (It was OK if the option was not defined at all.)
2273
227411. A "Completed" log line is now written for messages that are removed from
2275 the spool by the -Mrm option.
2276
227712. $host_address is now set to the target address during the checking of
2278 ignore_target_hosts.
2279
228013. When checking ignore_target_hosts for an ipliteral router, no host name was
2281 being passed; this would have caused $sender_host_name to have been used if
2282 matching the list had actually called for a host name (not very likely,
2283 since this list is usually IP addresses). A host name is now passed as
2284 "[x.x.x.x]".
2285
228614. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2287 code that specifies a non-restarting handler (typically sigaction() in
2288 modern systems) in an attempt to fix a rare and obscure crash bug.
2289
229015. Narrowed the window for a race in the daemon that could cause it to ignore
2291 SIGCHLD signals. This is not a major problem, because they are used only to
2292 wake it up if nothing else does.
2293
229416. A malformed maildirsize file could cause Exim to calculate negative values
2295 for the mailbox size or file count. Odd effects could occur as a result.
2296 The maildirsize information is now recalculated if the size or filecount
2297 end up negative.
2298
229917. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2300 support for a long time. Removed HAVE_SYS_VFS_H.
2301
ea3a6f44 230218. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2303
230419. Allow an empty sender to be matched against a lookup in an address list.
2305 Previously the only cases considered were a regular expression, or an
2306 empty pattern.
2307
230820. Exim went into a mad DNS lookup loop when doing a callout where the
2309 host was specified on the transport, if the DNS lookup yielded more than
2310 one IP address.
2311
ea3a6f44
NM
231221. The RFC2047 encoding function was originally intended for short strings
2313 such as real names; it was not keeping to the 75-character limit for
2314 encoded words that the RFC imposes. It now respects the limit, and
2315 generates multiple encoded words if necessary. To be on the safe side, I
2316 have increased the buffer size for the ${rfc2047: expansion operator from
2317 1024 to 2048 bytes.
bbe902f0 2318
ea3a6f44
NM
231922. Failure to deliver a bounce message always caused it to be frozen, even if
2320 there was an errors_to setting on the router. The errors_to setting is now
2321 respected.
bbe902f0
PH
2322
232323. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2324 canonical form (fully expanded) before being placed in
2325 $sender_host_address.
2326
232724. Updated eximstats to version 1.33
2328
ea3a6f44
NM
232925. Include certificate and key file names in error message when GnuTLS fails
2330 to set them up, because the GnuTLS error message doesn't include the name
2331 of the failing file when there is a problem reading it.
bbe902f0
PH
2332
233326. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2334 As per change 25.
bbe902f0 2335
ea3a6f44
NM
233627. Reset the locale to "C" after calling embedded Perl, in case it was changed
2337 (this can affect the format of dates).
bbe902f0 2338
ea3a6f44
NM
233928. exim_tidydb, when checking for the continued existence of a message for
2340 which it has found a message-specific retry record, was not finding
2341 messages that were in split spool directories. Consequently, it was
2342 deleting retry records that should have stayed in existence.
bbe902f0
PH
2343
234429. eximstats updated to version 1.35
2345 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2346 1.35 - bugfix such that pie charts by volume are generated correctly
2347
ea3a6f44
NM
234830. The SPA authentication driver was not abandoning authentication and moving
2349 on to the next authenticator when an expansion was forced to fail,
2350 contradicting the general specification for all authenticators. Instead it
2351 was generating a temporary error. It now behaves as specified.
bbe902f0 2352
ea3a6f44
NM
235331. The default ordering of permitted cipher suites for GnuTLS was pessimal
2354 (the order specifies the preference for clients). The order is now AES256,
2355 AES128, 3DES, ARCFOUR128.
bbe902f0 2356
ea3a6f44
NM
235731. Small patch to Sieve code - explicitly set From: when generating an
2358 autoreply.
bbe902f0 2359
ea3a6f44
NM
236032. Exim crashed if a remote delivery caused a very long error message to be
2361 recorded - for instance if somebody sent an entire SpamAssassin report back
2362 as a large number of 550 error lines. This bug was coincidentally fixed by
2363 increasing the size of one of Exim's internal buffers (big_buffer) that
2364 happened as part of the Exiscan merge. However, to be on the safe side, I
2365 have made the code more robust (and fixed the comments that describe what
2366 is going on).
bbe902f0 2367
ea3a6f44
NM
236833. Some experimental protocols are using DNS PTR records for new purposes. The
2369 keys for these records are domain names, not reversed IP addresses. The
2370 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2371 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2372 CAN-2005-0021
2373
ea3a6f44
NM
237434. The host_aton() function is supposed to be passed a string that is known
2375 to be a valid IP address. However, in the case of IPv6 addresses, it was
2376 not checking this. This is a hostage to fortune. Exim now panics and dies
2377 if the condition is not met. A case was found where this could be provoked
2378 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2379 components; fortuitously, this particular loophole had already been fixed
2380 by change 4.50/55 or 4.44/33 above.
2381
2382 If there are any other similar loopholes, the new check in host_aton()
2383 itself should stop them being exploited. The report I received stated that
2384 data on the command line could provoke the exploit when Exim was running as
2385 exim, but did not say which command line option was involved. All I could
2386 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2387 running as the user.
bbe902f0
PH
2388 CAN-2005-0021
2389
ea3a6f44
NM
239035. There was a buffer overflow vulnerability in the SPA authentication code
2391 (which came originally from the Samba project). I have added a test to the
2392 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2393 CAN-2005-0022
2394
ea3a6f44
NM
239536. The daemon start-up calls getloadavg() while still root for those OS that
2396 need the first call to be done as root, but it missed one case: when
2397 deliver_queue_load_max is set with deliver_drop_privilege. This is
2398 necessary for the benefit of the queue runner, because there is no re-exec
2399 when deliver_drop_privilege is set.
bbe902f0 2400
ea3a6f44
NM
240137. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2402 was in use, was not putting the data itself into the right store pool;
2403 consequently, it could be overwritten for a subsequent message in the same
2404 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2405 the caching.)
bbe902f0 2406
ea3a6f44
NM
240738. Sometimes the final signoff response after QUIT could fail to get
2408 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2409 < 0 before doing a fflush(). This bug looks as though it goes back to the
2410 introduction of TLS in release 3.20, but "sometimes" must have been rare
2411 because the tests only now provoked it.
bbe902f0
PH
2412
2413
495ae4b0
PH
2414Exim version 4.43
2415-----------------
2416
2417 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2418 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2419 Now it returns an integer. A number of calls were still expecting a T/F
2420 return. Fortuitously, in all cases, the tests worked in OK situations,
2421 which is the norm. However, things would have gone wrong on any write
2422 failures on the smtp file descriptor. This function is used when sending
2423 messages over SMTP and also when doing verify callouts.
2424
2425 2. When Exim is called to do synchronous delivery of a locally submitted
2426 message (the -odf or -odi options), it no longer closes stderr before doing
2427 the delivery.
2428
2429 3. Implemented the mua_wrapper option.
2430
2431 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2432
2433 5. Implemented the functions header_remove(), header_testname(),
2434 header_add_at_position(), and receive_remove_recipient(), and exported them
2435 to local_scan().
2436
2437 6. If an ACL "warn" statement specified the addition of headers, Exim already
2438 inserted X-ACL-Warn: at the start if there was no header name. However, it
2439 was not making this test for the second and subsequent header lines if
2440 there were newlines in the string. This meant that an invalid header could
2441 be inserted if Exim was badly configured.
2442
2443 7. Allow an ACL "warn" statement to add header lines at the start or after all
2444 the Received: headers, as well as at the end.
2445
2446 8. Added the rcpt_4xx retry error code.
2447
2448 9. Added postmaster_mailfrom=xxx to callout verification option.
2449
245010. Added mailfrom=xxxx to the callout verification option, for verify=
2451 header_sender only.
2452
245311. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2454 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2455
245612. Inserted some casts to stop certain compilers warning when using pointer
2457 differences as field lengths or precisions in printf-type calls (mostly
2458 affecting debugging statements).
2459
246013. Added optional readline() support for -be (dynamically loaded).
2461
246214. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2463 same clock tick as a message's arrival, so that its received time was the
2464 same as the "first fail" time on the retry record, and that message
2465 remained on the queue past the ultimate address timeout, every queue runner
2466 would try a delivery (because it was past the ultimate address timeout) but
2467 after another failure, the ultimate address timeout, which should have then
2468 bounced the address, did not kick in. This was a "< instead of <=" error;
2469 in most cases the first failure would have been in the next clock tick
2470 after the received time, and all would be well.
2471
247215. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2473 being recognized when the domain list was tested by the match_domain
2474 condition in an expansion string.
2475
247616. Added the ${str2b64: operator.
2477
247817. Exim was always calling setrlimit() to set a large limit for the number of
2479 processes, without checking whether the existing limit was already
2480 adequate. (It did check for the limit on file descriptors.) Furthermore,
2481 errors from getrlimit() and setrlimit() were being ignored. Now they are
2482 logged to the main and panic logs, but Exim does carry on, to try to do its
2483 job under whatever limits there are.
2484
248518. Imported PCRE 5.0.
2486
248719. Trivial typo in log message " temporarily refused connection" (the leading
2488 space).
2489
249020. If the log selector return_path_on_delivery was set and an address was
2491 redirected to /dev/null, the delivery process crashed because it assumed
2492 that a return path would always be set for a "successful" delivery. In this
2493 case, the whole delivery is bypassed as an optimization, and therefore no
2494 return path is set.
2495
249621. Internal re-arrangement: the function for sending a challenge and reading
2497 a response while authentication was assuming a zero-terminated challenge
2498 string. It's now changed to take a pointer and a length, to allow for
2499 binary data in such strings.
2500
250122. Added the cyrus_sasl authenticator (code supplied by MBM).
2502
250323. Exim was not respecting finduser_retries when seeking the login of the
2504 uid under which it was called; it was always trying 10 times. (The default
2505 setting of finduser_retries is zero.) Also, it was sleeping after the final
2506 failure, which is pointless.
2507
250824. Implemented tls_on_connect_ports.
2509
251025. Implemented acl_smtp_predata.
2511
251226. If the domain in control=submission is set empty, Exim assumes that the
2513 authenticated id is a complete email address when it generates From: or
2514 Sender: header lines.
2515
251627. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2517 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2518 chown and chgrp in /bin and hostname in /usr/bin.
2519
252028. Exim was keeping the "process log" file open after each use, just as it
2521 does for the main log. This opens the possibility of it remaining open for
2522 long periods when the USR1 signal hits a daemon. Occasional processlog
2523 errors were reported, that could have been caused by this. Anyway, it seems
2524 much more sensible not to leave this file open at all, so that is what now
2525 happens.
2526
252729. The long-running daemon process does not normally write to the log once it
2528 has entered its main loop, and it closes the log before doing so. This is
2529 so that log files can straightforwardly be renamed and moved. However,
2530 there are a couple of unusual error situations where the daemon does write
2531 log entries, and I had neglected to close the log afterwards.
2532
253330. The text of an SMTP error response that was received during a remote
2534 delivery was being truncated at 512 bytes. This is too short for some of
2535 the long messages that one sometimes sees. I've increased the limit to
2536 1024.
2537
253831. It is now possible to make retry rules that apply only when a message has a
2539 specific sender, in particular, an empty sender.
2540
254132. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2542 it possible to be selective about when SMTP synchronization is enforced.
2543
254433. Added "control = caseful_local_part" and "control = "caselower_local_part".
2545
254632. Implemented hosts_connection_nolog.
2547
254833. Added an ACL for QUIT.
2549
255034. Setting "delay_warning=" to disable warnings was not working; it gave a
2551 syntax error.
2552
255335. Added mailbox_size and mailbox_filecount to appendfile.
2554
255536. Added control = no_multiline_responses to ACLs.
2556
255737. There was a bug in the logic of the code that waits for the clock to tick
2558 in the case where the clock went backwards by a substantial amount such
2559 that the microsecond fraction of "now" was more than the microsecond
2560 fraction of "then" (but the whole seconds number was less).
2561
256238. Added support for the libradius Radius client library this is found on
2563 FreeBSD (previously only the radiusclient library was supported).
2564
2565
2566Exim version 4.42
2567-----------------
2568
2569 1. When certain lookups returned multiple values in the form name=value, the
2570 quoting of the values was not always being done properly. Specifically:
2571 (a) If the value started with a double quote, but contained no whitespace,
2572 it was not quoted.
2573 (b) If the value contained whitespace other than a space character (i.e.
2574 tabs or newlines or carriage returns) it was not quoted.
2575 This fix has been applied to the mysql and pgsql lookups by writing a
2576 separate quoting function and calling it from the lookup code. The fix
2577 should probably also be applied to nisplus, ibase and oracle lookups, but
2578 since I cannot test any of those, I have not disturbed their existing code.
2579
2580 2. A hit in the callout cache for a specific address caused a log line with no
2581 reason for rejecting RCPT. Now it says "Previous (cached) callout
2582 verification failure".
2583
2584 3. There was an off-by-one bug in the queryprogram router. An over-long
2585 return line was truncated at 256 instead of 255 characters, thereby
2586 overflowing its buffer with the terminating zero. As well as fixing this, I
2587 have increased the buffer size to 1024 (and made a note to document this).
2588
2589 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2590 when Exim is waiting for an SMTP response from a remote server, Exim
2591 restarts its select() call on the socket, thereby resetting its timeout.
2592 This is not a problem when such interrupts are rare. Somebody set up a cron
2593 job to run exiwhat every 2 minutes, which is less than the normal select()
2594 timeout (5 or 10 minutes). This meant that the select() timeout never
2595 kicked in because it was always reset. I have fixed this by comparing the
2596 time when an interrupt arrives with the time at the start of the first call
2597 to select(). If more time than the timeout has elapsed, the interrupt is
2598 treated as a timeout.
2599
2600 5. Some internal re-factoring in preparation for the addition of Sieve
2601 extensions (by MH). In particular, the "personal" test is moved to a
2602 separate function, and given an option for scanning Cc: and Bcc: (which is
2603 not set for Exim filters).
2604
2605 6. When Exim created an email address using the login of the caller as the
2606 local part (e.g. when creating a From: or Sender: header line), it was not
2607 quoting the local part when it contained special characters such as @.
2608
2609 7. Installed new OpenBSD configuration files.
2610
2611 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2612 try to make them clearer.
2613
2614 9. Callout options, other than the timeout value, were being ignored when
2615 verifying sender addresses in header lines. For example, when using
2616
2617 verify = header_sender/callout=no_cache
2618
2619 the cache was (incorrectly) being used.
2620
262110. Added a missing instance of ${EXE} to the exim_install script; this affects
2622 only the Cygwin environment.
2623
262411. When return_path_on_delivery was set as a log selector, if different remote
2625 addresses in the same message used different return paths and parallel
2626 remote delivery occurred, the wrong values would sometimes be logged.
2627 (Whenever a remote delivery process finished, the return path value from
2628 the most recently started remote delivery process was logged.)
2629
263012. RFC 3848 specifies standard names for the "with" phrase in Received: header
2631 lines when AUTH and/or TLS are in use. This is the "received protocol"
2632 field. Exim used to use "asmtp" for authenticated SMTP, without any
2633 indication (in the protocol name) for TLS use. Now it follows the RFC and
2634 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2635 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2636 names appear in log lines as well as in Received: header lines.
2637
263813. Installed MH's patches for Sieve to add the "copy" and "vacation"
2639 extensions, and comparison tests, and to fix some bugs.
2640
264114. Changes to the "personal" filter test:
2642
2643 (1) The test was buggy in that it was just doing the equivalent of
2644 "contains" tests on header lines. For example, if a user's address was
2645 anne@some.where, the "personal" test would incorrectly be true for
2646
2647 To: susanne@some.where
2648
2649 This test is now done by extracting each address from the header in turn,
2650 and checking the entire address. Other tests that are part of "personal"
2651 are now done using regular expressions (for example, to check local parts
2652 of addresses in From: header lines).
2653
2654 (2) The list of non-personal local parts in From: addresses has been
2655 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2656 taken from the Sieve specification recommendations.
2657
2658 (3) If the message contains any header line starting with "List-" it is
2659 treated as non-personal.
2660
2661 (4) The test for "circular" in the Subject: header line has been removed
2662 because it now seems ill-conceived.
2663
266415. Minor typos in src/EDITME comments corrected.
2665
266616. Installed latest exipick from John Jetmore.
2667
266817. If headers_add on a router specified a text string that was too long for
2669 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2670 of string_sprintf() is now avoided.
2671
267218. $message_body_size was not set (it was always zero) when running the DATA
2673 ACL and the local_scan() function.
2674
267519. For the "mail" command in an Exim filter, no default was being set for
2676 the once_repeat time, causing a random time value to be used if "once" was
2677 specified. (If the value happened to be <= 0, no repeat happened.) The
2678 default is now 0s, meaning "never repeat". The "vacation" command was OK
2679 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2680 (I found it when inspecting the code).
2681
268220. There is now an overall timeout for performing a callout verification. It
2683 defaults to 4 times the callout timeout, which applies to individual SMTP
2684 commands during the callout. The overall timeout applies when there is more
2685 than one host that can be tried. The timeout is checked before trying the
2686 next host. This prevents very long delays if there are a large number of
2687 hosts and all are timing out (e.g. when the network connections are timing
2688 out). The value of the overall timeout can be changed by specifying an
2689 additional sub-option for "callout", called "maxwait". For example:
2690
2691 verify = sender/callout=5s,maxwait=20s
2692
269321. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2694 to the end before writing, but this should make it even safer).
2695
269622. Exim was forgetting that it had advertised PIPELINING for the second and
2697 subsequent messages on an SMTP connection. It was also not resetting its
2698 memory on STARTTLS and an internal HELO.
2699
270023. When Exim logs an SMTP synchronization error within a session, it now
2701 records whether PIPELINING has been advertised or not.
2702
270324. Added 3 instances of "(long int)" casts to time_t variables that were being
2704 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2705 rather than long int.
2706
270725. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2708
270926. Added the never_mail option to autoreply.
2710
2711
2712Exim version 4.41
2713-----------------
2714
2715 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2716 crash if the getsockname() call failed; this can happen if a connection is
2717 closed very soon after it is established. The problem was simply in the
2718 order in which certain operations were done, causing Exim to try to write
2719 to the SMTP stream before it had set up the file descriptor. The bug has
2720 been fixed by making things happen in the correct order.
2721
2722
2723Exim version 4.40
2724-----------------
2725
2726 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2727 before the connection was closed, thus losing the rejection response.
2728
2729 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2730 some early Solaris releases, but causes trouble in current releases where
2731 socklen_t is defined.
2732
2733 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2734 always exist.
2735
2736 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2737 configured.
2738
2739 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2740 that releasing the top of it at the end releases what was used for sub-
2741 expansions (unless the block got too big). However, discard this block if
2742 the first thing is a variable or header, so that we can use its block when
2743 it is dynamic (useful for very large $message_headers, for example).
2744
2745 6. Lookups now cache *every* query, not just the most recent. A new, separate
2746 store pool is used for this. It can be recovered when all lookup caches are
2747 flushed. Lookups now release memory at the end of their result strings.
2748 This has involved some general refactoring of the lookup sources.
2749
2750 7. Some code has been added to the store_xxx() functions to reduce the amount
2751 of flapping under certain conditions.
2752
2753 8. log_incoming_interface used to affect only the <= reception log lines. Now
2754 it causes the local interface and port to be added to several more SMTP log
2755 lines, for example "SMTP connection from", and rejection lines.
2756
2757 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2758
275910. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2760
276111. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2762 could be overwritten at the end of the current message (or the start of a
2763 new message if it was set in a HELO ACL). The value is now preserved for
2764 the duration of the SMTP connection.
2765
276612. If a transport had a headers_rewrite setting, and a matching header line
2767 contained an unqualified address, that address was qualified, even if it
2768 did not match any rewriting rules. The underlying bug was that the values
2769 of the flags that permit the existence of unqualified sender and recipient
2770 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2771 non-local messages, and by -bnq for local messages) were not being
2772 preserved with the message after it was received.
2773
277413. When Exim was logging an SMTP synchronization error, it could sometimes log
2775 "next input=" as part of the text comprising the host identity instead of
2776 the correct text. The code was using the same buffer for two different
2777 strings. However, depending on which order the printing function evaluated
2778 its arguments, the bug did not always show up. Under Linux, for example, my
2779 test suite worked just fine.
2780
278114. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2782 doesn't work with some older versions of Perl. It has been changed to "my",
2783 which in any case is probably the better facility to use.
2784
278515. A really picky compiler found some instances of statements for creating
2786 error messages that either had too many or two few arguments for the format
2787 string.
2788
278916. The size of the buffer for calls to the DNS resolver has been increased
2790 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2791 for addresses that have a lot of PTR records. This alleviates a problem; it
2792 does not fully solve it.
2793
279417. A dnsdb lookup for PTR records that receives more data than will fit in the
2795 buffer now truncates the list and logs the incident, which is the same
2796 action as happens when Exim is looking up a host name and its aliases.
2797 Previously in this situation something unpredictable would happen;
2798 sometimes it was "internal error: store_reset failed".
2799
280018. If a server dropped the connection unexpectedly when an Exim client was
2801 using GnuTLS and trying to read a response, the client delivery process
2802 crashed while trying to generate an error log message.
2803
280419. If a "warn" verb in an ACL added multiple headers to a message in a single
2805 string, for example:
2806
2807 warn message = H1: something\nH2: something
2808
2809 the text was added as a single header line from Exim's point of view
2810 though it ended up OK in the delivered message. However, searching for the
2811 second and subsequent header lines using $h_h2: did not work. This has been
2812 fixed. Similarly, if a system filter added multiple headers in this way,
2813 the routers could not see them.
2814
281520. Expanded the error message when iplsearch is called with an invalid key to
2816 suggest using net-iplsearch in a host list.
2817
281821. When running tests using -bh, any delays imposed by "delay" modifiers in
2819 ACLs are no longer actually imposed (and a message to that effect is
2820 output).
2821
282222. If a "gecos" field in a passwd entry contained escaped characters, in
2823 particular, if it contained a \" sequence, Exim got it wrong when building
2824 a From: or a Sender: header from that name. A second bug also caused
2825 incorrect handling when an unquoted " was present following a character
2826 that needed quoting.
2827
282823. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2829 was not being matched caselessly.
2830
283124. Arranged for all hyphens in the exim.8 source to be escaped with
2832 backslashes.
2833
283425. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2835 properly. Recipient callout cache records were still being keyed to include
2836 the sender, even when use_sender was set false. This led to far more
2837 callouts that were necessary. The sender is no longer included in the key
2838 when use_sender is false.
2839
284026. Added "control = submission" modifier to ACLs.
2841
284227. Added the ${base62d: operator to decode base 62 numbers.
2843
284428. dnsdb lookups can now access SRV records.
2845
284629. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2847 the configuration file.
2848
284930. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2850 (-v) mode. This makes the output for a verbose queue run more intelligible.
2851
285231. Added a use_postmaster feature to recipient callouts.
2853
285432. Added the $body_zerocount variable, containing the number of binary zero
2855 bytes in the message body.
2856
285733. The time of last modification of the "new" subdirectory is now used as the
2858 "mailbox time last read" when there is a quota error for a maildir
2859 delivery.
2860
286134. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2862
286335. Added +ignore_unknown as a special item in host lists.
2864
286536. Code for decoding IPv6 addresses in host lists is now included, even if
2866 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2867 address was recognized as an IP address, but was then not correctly decoded
2868 into binary, causing unexpected and incorrect effects when compared with
2869 another IP address.
2870
2871
2872Exim version 4.34
2873-----------------
2874
2875 1. Very minor rewording of debugging text in manualroute to say "list of
2876 hosts" instead of "hostlist".
2877
2878 2. If verify=header_syntax was set, and a header line with an unqualified
2879 address (no domain) and a large number of spaces between the end of the
2880 name and the colon was received, the reception process suffered a buffer
2881 overflow, and (when I tested it) crashed. This was caused by some obsolete
2882 code that should have been removed. The fix is to remove it!
2883
2884 3. When running in the test harness, delay a bit after writing a bounce
2885 message to get a bit more predictability in the log output.
2886
2887 4. Added a call to search_tidyup() just before forking a reception process. In
2888 theory, someone could use a lookup in the expansion of smtp_accept_max_
2889 per_host which, without the tidyup, could leave open a database connection.
2890
2891 5. Added the variables $recipient_data and $sender_data which get set from a
2892 lookup success in an ACL "recipients" or "senders" condition, or a router
2893 "senders" option, similar to $domain_data and $local_part_data.
2894
2895 6. Moved the writing of debug_print from before to after the "senders" test
2896 for routers.
2897
2898 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2899 problems for message scanning, either using a data ACL, or using
2900 local_scan() because the Received: header was not generated till after they
2901 were called (in order to set the time as the time of reception completion).
2902 I have revised the way this works. The header is now generated after the
2903 body is received, but before the ACL or local_scan() are called. After they
2904 are run, the timestamp in the header is updated.
2905
2906
2907Exim version 4.33
2908-----------------
2909
2910 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2911 before starting a queue runner without re-exec. This happened only when
2912 deliver_drop_privilege was set or when the Exim user was set to root. The
2913 effect of the bug was that timeouts during subsequent deliveries caused
2914 crashes instead of being properly handled. The handler is now left at its
2915 default (and expected) setting.
2916
2917 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2918 message, again when deliver_drop_privilege is set or Exim is run as root.
2919 The bug described in (1) was not present in this case, but the tidying up
2920 of the other signals was missing. I have made the two cases consistent.
2921
2922 3. The ignore_target_hosts setting on a manualroute router was being ignored
2923 for hosts that were looked up using the /MX notation.
2924
2925 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2926 in domain lists.
2927
2928 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2929 operated on the sender address. After changing the $sender_address to <>
2930 for the sender address verify, Exim was re-instated it as the original
2931 (before rewriting) address, but remembering that it had rewritten it, so it
2932 wasn't rewriting it again. This bug also had the effect of breaking the
2933 sender address verification caching when the sender address was rewritten.
2934
2935 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2936 This has been changed so that if the ip literal address matches
2937 ignore_target_hosts, the router declines.
2938
2939 7. Added expansion conditions match_domain, match_address, and match_local_
2940 part (NOT match_host).
2941
2942 8. The placeholder for the Received: header didn't have a length field set.
2943
2944 9. Added code to Exim itself and to exim_lock to test for a specific race
2945 condition that could lead to file corruption when using MBX delivery. The
2946 issue is with the lockfile that is created in /tmp. If this file is removed
2947 after a process has opened it but before that process has acquired a lock,
2948 there is the potential for a second process to recreate the file and also
2949 acquire a lock. This could lead to two Exim processes writing to the file
2950 at the same time. The added code performs the same test as UW imapd; it
2951 checks after acquiring the lock that its file descriptor still refers to
2952 the same named file.
2953
295410. The buffer for building added header lines was of fixed size, 8192 bytes.
2955 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2956 when Exim is built.
2957
295811. Added the smtp_active_hostname option. If used, this will typically be made
2959 to depend on the incoming interface address. Because $interface_address is
2960 not set up until the daemon has forked a reception process, error responses
2961 that can happen earlier (such as "too many connections") no longer contain
2962 a host name.
2963
296412. If an expansion in a condition on a "warn" statement fails because a lookup
2965 defers, the "warn" statement is abandoned, and the next ACL statement is
2966 processed. Previously this caused the whole ACL to be aborted.
2967
296813. Added the iplsearch lookup type.
2969
297014. Added ident_timeout as a log selector.
2971
297215. Added tls_certificate_verified as a log selector.
2973
297416. Added a global option tls_require_ciphers (compare the smtp transport
2975 option of the same name). This controls incoming TLS connections.
2976
297717. I finally figured out how to make tls_require_ciphers do a similar thing
2978 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2979 before starting the TLS session.
2980
298118. Tabs are now shown as \t in -bP output.
2982
298319. If the log selector return_path_on_delivery was set, Exim crashed when
2984 bouncing a message because it had too many Received: header lines.
2985
298620. If two routers both had headers_remove settings, and the first one included
2987 a superfluous trailing colon, the final name in the first list and the
2988 first name in the second list were incorrectly joined into one item (with a
2989 colon in the middle).
2990
2991
2992Exim version 4.32
2993-----------------
2994
2995 1. Added -C and -D options to the exinext utility, mainly to make it easier
2996 to include in the automated testing, but these could be helpful when
2997 multiple configurations are in use.
2998
2999 2. The exinext utility was not formatting the output nicely when there was
3000 an alternate port involved in the retry record key, nor when there was a
3001 message id as well (for retries that were specific to a specific message
3002 and a specific host). It was also confused by IPv6 addresses, because of
3003 the additional colons they contain. I have fixed the IPv4 problem, and
3004 patched it up to do a reasonable job for IPv6.
3005
3006 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3007 delivery, the log line now contains "pipelined" if PIPELINING was used.
3008
3009 4. An SMTP transport process used to panic and die if the bind() call to set
3010 an explicit outgoing interface failed. This has been changed; it is now
3011 treated in the same way as a connect() failure.
3012
3013 5. A reference to $sender_host_name in the part of a conditional expansion
3014 that was being skipped was still causing a DNS lookup. This no longer
3015 occurs.
3016
3017 6. The def: expansion condition was not recognizing references to header lines
3018 that used bh_ and bheader_.
3019
3020 7. Added the _cache feature to named lists.
3021
3022 8. The code for checking quota_filecount in the appendfile transport was
3023 allowing one more file than it should have been.
3024
3025 9. For compatibility with Sendmail, the command line option
3026
3027 -prval:sval
3028
3029 is equivalent to
3030
3031 -oMr rval -oMs sval
3032
3033 and sets the incoming protocol and host name (for trusted callers). The
3034 host name and its colon can be omitted when only the protocol is to be set.
3035 Note the Exim already has two private options, -pd and -ps, that refer to
3036 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3037 "s", but I don't think that's a major issue.
3038
303910. A number of refactoring changes to the code, none of which should affect
3040 Exim's behaviour:
3041
3042 (a) The number of logging options was getting close to filling up the
3043 32-bit word that was used as a bit map. I have split them into two classes:
3044 those that are passed in the argument to log_write(), and those that are
3045 only ever tested independently outside of that function. These are now in
3046 separate 32-bit words, so there is plenty of room for expansion again.
3047 There is no change in the user interface or the logging behaviour.
3048
3049 (b) When building, for example, log lines, the code previously used a
3050 macro that called string_cat() twice, in order to add two strings. This is
3051 not really sufficiently general. Furthermore, there was one instance where
3052 it was actually wrong because one of the argument was used twice, and in
3053 one call a function was used. (As it happened, calling the function twice
3054 did not affect the overall behaviour.) The macro has been replaced by a
3055 function that can join an arbitrary number of extra strings onto a growing
3056 string.
3057
3058 (c) The code for expansion conditions now uses a table and a binary chop
3059 instead of a serial search (which was left over from when there were very
3060 few conditions). Also, it now recognizes conditions like "pam" even when
3061 the relevant support is not compiled in: a suitably worded error message is
3062 given if an attempt is made to use such a condition.
3063
306411. Added ${time_interval:xxxxx}.
3065
306612. A bug was causing one of the ddress fields not to be passed back correctly
3067 from remote delivery subprocesses. The field in question was not being
3068 subsequently used, so this caused to problems in practice.
3069
307013. Added new log selectors queue_time and deliver_time.
3071
307214. Might have fixed a bug in maildirsizefile handling that threw up
3073 "unexpected character" debug warnings, and recalculated the data
3074 unnecessarily. In any case, I expanded the warning message to give more
3075 information.
3076
307715. Added the message "Restricted characters in address" to the statements in
3078 the default ACL that block characters like @ and % in local parts.
3079
308016. Change 71 for release 4.31 proved to be much less benign that I imagined.
3081 Three changes have been made:
3082
3083 (a) There was a serious bug; a negative response to MAIL caused the whole
3084 recipient domain to be cached as invalid, thereby blocking all messages
3085 to all local parts at the same domain, from all senders. This bug has
3086 been fixed. The domain is no longer cached after a negative response to
3087 MAIL if the sender used is not empty.
3088
3089 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3090 been restored.
3091
3092 (c) A new callout option, "use_sender" has been added for people who want
3093 the modified behaviour.
3094
3095
3096Exim version 4.31
3097-----------------
3098
3099 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3100 Larry Rosenman.
3101
3102 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3103 indeed breaks things for older releases.
3104
3105 3. Added additional logging to the case where there is a problem reading data
3106 from a filter that is running in a subprocess using a pipe, in order to
3107 try to track down a specific problem.
3108
3109 4. Testing facility fudge: when running in the test harness and attempting
3110 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3111 getting "No route to host". Convert this to a timeout.
3112
3113 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3114 warning.
3115
3116 6. Some OS don't have socklen_t but use size_t instead. This affects the
3117 fifth argument of getsockopt() amongst other things. This is now
3118 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3119 can be set for individual OS. I have set it for SunOS5, OSF1, and
3120 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3121 some earlier ones do not.
3122
3123 7. Change 4.30/15 was not doing the test caselessly.
3124
3125 8. The standard form for an IPv6 address literal was being rejected by address
3126 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3127 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3128 this, as well as the form without the "IPv6" on the front (but only when
3129 address literals are enabled, of course).
3130
3131 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3132
313310. Exim crashed if a message with an empty sender address specified by -f
3134 encountered a router with an errors_to setting. This could be provoked only
3135 by a command such as
3136
3137 exim -f "" ...
3138
3139 where an empty string was supplied; "<>" did not hit this bug.
3140
314111. Installed PCRE release 4.5.
3142
314312. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3144 remained set. It is now erased.
3145
314613. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3147 times from message ids (which are base 36 rather than the normal 62).
3148
314914. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3150 were being counted as actual protocol errors, and logged if the log
3151 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3152 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3153 and DATA following a set of rejected RCPTs do not count as protocol errors.
3154 In other words, Exim assumes they were pipelined, though this may not
3155 actually be the case. Of course, in all cases the client gets an
3156 appropriate error code.
3157
315815. If a lookup fails in an ACL condition, a message about the failure may
3159 be available; it is used if testing the ACL cannot continue, because most
3160 such messages specify what the cause of the deferral is. However, some
3161 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3162 that caused an old message to be retained and used if a later statement
3163 caused a defer, replacing the real cause of the deferral.
3164
316516. If an IP address had so many PTR records that the DNS lookup buffer
3166 was not large enough to hold them, Exim could crash while trying to process
3167 the truncated data. It now detects and logs this case.
3168
316917. Further to 4.21/58, another change has been made: if (and only if) the
3170 first line of a message (the first header line) ends with CRLF, a bare LF
3171 in a subsequent header line has a space inserted after it, so as not to
3172 terminate the header.
3173
317418. Refactoring: tidied an ugly bit of code in appendfile that copied data
3175 unnecessarily, used atoi() instead of strtol(), and didn't check the
3176 termination when getting file sizes from file names by regex.
3177
317819. Completely re-implemented the support for maildirsize files, in the light
3179 of a number of problems with the previous contributed implementation
3180 (4.30/29). In particular:
3181
3182 . If the quota is zero, the maildirsize file is maintained, but no quota is
3183 imposed.
3184
3185 . If the maildir directory does not exist, it is created before any attempt
3186 to write a maildirsize file.
3187
3188 . The quota value in the file is just a cache; if the quota is changed in
3189 the transport, the new value overrides.
3190
3191 . A regular expression is available for excluding directories from the
3192 count.
3193
319420. The autoreply transport checks the characters in options that define the
3195 message's headers; it allows continued headers, but it was checking with
3196 isspace() after an embedded newline instead of explicitly looking for a
3197 space or a tab.
3198
319921. If all the "regular" hosts to which an address was routed had passed their
3200 expiry times, and had not reached their retry times, the address was
3201 bounced, even if fallback hosts were defined. Now Exim should go on to try
3202 the fallback hosts.
3203
320422. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3205 equivalent code in the SMTP transport. Some hosts send humungous responses
3206 to HELO/EHLO, more than 1024 it seems.
3207
320823. Refactoring: code in filter.c used (void *) for "any old type" but this
3209 gives compiler warnings in some environments. I've now done it "properly",
3210 using a union.
3211
321224. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3213 (because of problems with the built-in one) was declared to return uschar *
3214 instead of char *, causing compiler failure.
3215
321625. Fixed a file descriptor leak when processing alias/forward files.
3217
321826. Fixed a minor format string issue in dbfn.c.
3219
322027. Typo in exim.c: ("dmbnz" for "dbmnz").
3221
322228. If a filter file refered to $h_xxx or $message_headers, and the headers
3223 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3224 become corrupted.
3225
322629. When a sender address is verified, it is cached, to save repeating the test
3227 when there is more than one recipient in a message. However, when the
3228 verification involves a callout, it is possible for different callout
3229 options to be set for different recipients. It is too complicated to keep
3230 track of this in the cache, so now Exim always runs a verification when a
3231 callout is required, relying on the callout cache for the optimization.
3232 The overhead is duplication of the address routing, but this should not be
3233 too great.
3234
323530. Fixed a bug in callout caching. If a RCPT command caused the sender address
3236 to be verified with callout=postmaster, and the main callout worked but the
3237 postmaster check failed, the verification correctly failed. However, if a
3238 subsequent RCPT command asked for sender verification *without* the
3239 postmaster check, incorrect caching caused this verification also to fail,
3240 incorrectly.
3241
324231. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3243 it was not caching the DNS options (qualify_single, search_parents) that
3244 were used when the lookup failed. A subsequent lookup with different
3245 options therefore always gave the same answer, though there were cases
3246 where it should not have. (Example: a "domains = !$mx_any" option on a
3247 dnslookup router: the "domains" option is always processed without any
3248 widening, but the router might have qualify_single set.) Now Exim uses the
3249 cached value only when the same options are set.
3250
325132. Added John Jetmore's "exipick" utility to the distribution.
3252
325333. GnuTLS: When an attempt to start a TLS session fails for any reason other
3254 than a timeout (e.g. a certificate is required, and is not provided), an
3255 Exim server now closes the connection immediately. Previously it waited for
3256 the client to close - but if the client is SSL, it seems that they each
3257 wait for each other, leading to a delay before one of them times out.
3258
325934: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3260 maintained 0.8.x compatibility because I don't think many are using it, and
3261 it is clearly obsolete.
3262
326335. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3264 transport.
3265
326636. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3267 client certificate was expired. A simple patch fixes this, though I don't
3268 understand the full logic of why the verify callback is called multiple
3269 times.
3270
327137. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3272 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3273 which causes problems with some clients (such as the Certicom SSL Plus
3274 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3275 disables the coutermeasure allowing Eudora to connect."
3276
327738. Exim was not checking that a write() to a log file succeeded. This could
3278 lead to Bad Things if a log got too big, in particular if it hit a file
3279 size limit. Exim now panics and dies if it cannot write to a log file, just
3280 as it does if it cannot open a log file.
3281
328239. Modified OS/Makefile-Linux so that it now contains
3283
3284 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3285
3286 The two -D definitions ensure that Exim is compiled with large file
3287 support, which makes it possible to handle log files that are bigger than
3288 2^31.
3289
329040. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3291 instance) a domain was checked against a named list that involved a lookup,
3292 causing $domain_data to be set, then another domain was checked against the
3293 same list, then the first domain was re-checked, the value of $domain_data
3294 after the final check could be wrong. In particular, if the second check
3295 failed, it could be set empty. This bug probably also applied to
3296 $localpart_data.
3297
329841. The strip_trailing_dot option was not being applied to the address given
3299 with the -f command-line option.
3300
330142. The code for reading a message's header from the spool was incrementing
3302 $received_count, but never initializing it. This meant that the value was
3303 incorrect (doubled) while delivering a message in the same process in which
3304 it was received. In the most common configuration of Exim, this never
3305 happens - a fresh exec is done - but it can happen when
3306 deliver_drop_privilege is set.
3307
330843. When Exim logs an SMTP synchronization error - client data sent too soon -
3309 it now includes up to 150 characters of the unexpected data in the log
3310 line.
3311
331244. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3313 and building data strings. The size of both of these buffers was 10 000
3314 bytes - far larger than anybody would *ever* want, thought I. Needless to
3315 say, somebody hit the limit. I have increased the maximum line length to
3316 20 000 and the maximum data length of concatenated lines to 100 000. I have
3317 also fixed two bugs, because there was no checking on these buffers. Tsk,
3318 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3319 buffer is too small.
3320
332145. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3322 lsearch lookups. Now it does.
3323
332446. When parsing a route_list item in a manualroute router, a fixed-length
3325 buffer was used for the list of hosts. I made this 1024 bytes long,
3326 thinking that nobody would ever have a list of hosts that long. Wrong.
3327 Somebody had a whole pile of complicated expansion conditions, and the
3328 string was silently truncated, leading to an expansion error. It turns out
3329 that it is easier to change to an unlimited length (owing to other changes
3330 that have happened since this code was originally written) than to build
3331 structure for giving a limitation error. The length of the item that
3332 expands into the list of hosts is now unlimited.
3333
333447. The lsearch lookup could not handle data where the length of text line was
3335 more than 4095 characters. Such lines were truncated, leading to shortened
3336 data being returned. It should now handle lines of any length.
3337
333848. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3339 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3340 ACL").
3341
334249. Cosmetic tidy to scripts like exicyclog that are generated by globally
3343 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3344 no longer happens in comment lines. A list of replacements is now placed
3345 at the head of all of the source files, except those whose only change is
3346 to replace PERL_COMMAND in the very first #! line.
3347
334850. Replaced the slow insertion sort in queue.c, for sorting the list of
3349 messages on the queue, with a bottom-up merge sort, using code contributed
3350 by Michael Haardt. This should make operations like -bp somewhat faster on
3351 large queues. It won't affect queue runners, except when queue_run_in_order
3352 is set.
3353
335451. Installed eximstats 1.31 in the distribution.
3355
335652. Added support for SRV lookups to the dnslookup router.
3357
335853. If an ACL referred to $message_body or $message_body_end, the value was not
3359 reset for any messages that followed in the same SMTP session.
3360
336154. The store-handling optimization for building very long strings was not
3362 differentiating between the different store pools. I don't think this
3363 actually made any difference in practice, but I've tidied it.
3364
336555. While running the routers to verify a sender address, $sender_address
3366 was still set to the sender address. This is wrong, because when routing to
3367 send a bounce to the sender, it would be empty. Therefore, I have changed
3368 it so that, while verifying a sender address, $sender_address is set to <>.
3369 (There is no change to what happens when verifying a recipient address.)
3370
337156. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3372 target A or AAAA records (if not already returned) without resetting the
3373 qualify_single or search_parents options of the DNS resolver. These are
3374 inappropriate in this case because the targets of MX and SRV records must
3375 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3376 target that, when qualified, matched something in the local domain. These
3377 two options are now turned off when doing these lookups.
3378
337957. It seems that at least some releases of Reiserfs (which does not have the
3380 concept of a fixed number of inodes) returns zero and not -1 for the
3381 number of available inodes. This interacted badly with check_spool_inodes,
3382 which assumed that -1 was the "no such thing" setting. What I have done is
3383 to check that the total number of inodes is greater than zero before doing
3384 the test of how many are available.
3385
338658. When a "warn" ACL statement has a log_message modifier, the message is
3387 remembered, and not repeated. This is to avoid a lot of repetition when a
3388 message has many recipients that cause the same warning to be written.
3389 Howewer, Exim was preserving the list of already written lines for an
3390 entire SMTP session, which doesn't seem right. The memory is now reset if a
3391 new message is started.
3392
339359. The "rewrite" debugging flag was not showing the result of rewriting in the
3394 debugging output unless log_rewrite was also set.
3395
339660. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3397 of (int)(handle) when we know that handle contains (void *)(-1).
3398
339961. The Exim daemon panic-logs an error return when it closes the incoming
3400 connection. However "connection reset by peer" seems to be common, and
3401 isn't really an error worthy of noting specially, so that particular error
3402 is no long logged.
3403
340462. When Exim is trying to find all the local interfaces, it used to panic and
3405 die if the ioctl to get the interface flags failed. However, it seems that
3406 on at least one OS (Solaris 9) it is possible to have an interface that is
3407 included in the list of interfaces, but for which you get a failure error
3408 for this call. This happens when the interface is not "plumbed" into a
3409 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3410 failure of the "get flags" call assumes that the interface is down.
3411
341263. Added a ${eval10: operator, which assumes all numbers are decimal. This
3413 makes life easier for people who are doing arithmetic on fields extracted
3414 from dates, where you often get leading zeros that should not be
3415 interpreted as octal.
3416
341764. Added qualify_domain to the redirect router, to override the global
3418 setting.
3419
342065. If a pathologically long header line contained very many addresses (the
3421 report of this problem mentioned 10 000) and each of them was rewritten,
3422 Exim could use up a very large amount of memory. (It kept on making new
3423 copies of the header line as it rewrote, and never released the old ones.)
3424 At the expense of a bit more processing, the header rewriting function has
3425 been changed so that it no longer eats memory in this way.
3426
342766. The generation of the Received: header has been moved from the time that a
3428 message starts to be received, to the time that it finishes. The timestamp
3429 in the Received: header should now be very close to that of the <= log
3430 line. There are two side-effects of this change:
3431
3432 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3433 logged header lines no longer include the local Received: line, because
3434 it has not yet been created. The same applies to a copy of the message
3435 that is returned to a non-SMTP sender when a message is rejected.
3436
3437 (b) When a filter file is tested using -bf, no additional Received: header
3438 is added to the test message. After some thought, I decided that this
3439 is a bug fix.
3440
3441 This change does not affect the value of $received_for. It is still set
3442 after address rewriting, but before local_scan() is called.
3443
344467. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3445
344668. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3447 gave an unhelpful panic error message, and a defer error. I have managed to
3448 change this behaviour so that it now rejects any supplied certificate,
3449 which seems right, as the list of acceptable certificates is empty.
3450
345169. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3452 gave an unhelpful defer error. I have not managed to make this reject any
3453 supplied certificates, but the error message it gives is "no certificate
3454 supplied", which is not helpful.
3455
345670. exigrep's output now also includes lines that are not associated with any
3457 message, but which match the given pattern. Implemented by a patch from
3458 Martin Sluka, which also tidied up the Perl a bit.
3459
346071. Recipient callout verification, like sender verification, was using <> in
3461 the MAIL FROM command. This isn't really the right thing, since the actual
3462 sender may affect whether the remote host accepts the recipient or not. I
3463 have changed it to use the actual sender in the callout; this means that
3464 the cache record is now keyed on a recipient/sender pair, not just the
3465 recipient address. There doesn't seem to be a real danger of callout loops,
3466 since a callout by the remote host to check the sender would use <>.
3467 [SEE ABOVE: changed after hitting problems.]
3468
346972. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3470 temporary errors. However, in the case of such a code being given after
3471 the end of a data transmission (i.e. after ".") Exim was failing to write
3472 a retry record for the message. (Yes, there was some broken host that was
3473 actually sending 8xx at this point.)
3474
347573. An unknown lookup type in a host list could cause Exim to panic-die when
3476 the list was checked. (An example that provoked this was putting <; in the
3477 middle of a list instead of at the start.) If this happened during a DATA
3478 ACL check, a -D file could be left lying around. This kind of configuration
3479 error no longer causes Exim to die; instead it causes a defer errror. The
3480 incident is still logged to the main and panic logs.
3481
348274. Buglet left over from Exim 3 conversion. The message "too many messages
3483 in one connection" was written to the rejectlog but not the mainlog, except
3484 when address rewriting (yes!) was being logged.
3485
348675. Added write_rejectlog option.
3487
348876. When a system filter was run not as root (that is, when system_filter_user
3489 was set), the values of the $n variables were not being returned to the
3490 main process; thus, they were not subsequently available in the $sn
3491 variables.
3492
349377. Added +return_path_on_delivery log selector.
3494
349578. A connection timeout was being treated differently from recipients deferred
3496 when testing hosts_max_try with a message that was older than the host's
3497 retry timeout. (The host should not be counted, thus allowing all hosts to
3498 be tried at least once before bouncing.) This may have been the cause of an
3499 occasionally reported bug whereby a message would remain on the queue
3500 longer than the retry timeout, but would be bounced if a delivery was
3501 forced. I say "may" because I never totally pinned down the problem;
3502 setting up timeout/retry tests is difficult. See also the next item.
3503
350479. The ultimate address timeout was not being applied to errors that involved
3505 a combination of host plus message (for example, a timeout on a MAIL
3506 command). When an address resolved to a number of possible hosts, and they
3507 were not all tried for each delivery (e.g. because of hosts_max_try), a
3508 message could remain on the queue longer than the retry timeout.
3509
351080. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3511 Haardt.
3512
351381. Fixed an obscure SMTP outgoing bug which required at least the following
3514 conditions: (a) there was another message waiting for the same server;
3515 (b) the server returned 5xx to all RCPT commands in the first message so
3516 that the message was not completed; (c) the server dropped the connection
3517 or gave a negative response to the RSET that Exim sends to abort the
3518 transaction. The observed case was a dropped connection after DATA that had
3519 been sent in pipelining mode. That is, the server had advertised PIPELINING
3520 but was not implementing it correctly. The effect of the bug was incorrect
3521 behaviour, such as trying another host, and this could lead to a crash.
3522
3523
3524Exim version 4.30
3525-----------------
3526
3527 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3528 and daemon.c were passed as pointers to ints; they should have been
3529 pointers to socklen_t variables (which are typically unsigned ints).
3530
3531 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3532 fixed.
3533
3534 3. Fixed a really odd bug that affected only the testing scheme; patching a
3535 certain fixed string in the binary changed the value of another string that
3536 happened to be identical to the end of the original first string.
3537
3538 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3539 name", it returns that address as the IP address. On some operating
3540 systems (e.g. Solaris), it also passes back the IP address string as the
3541 "host name". However, on others (e.g. Linux), it passes back an empty
3542 string. Exim wasn't checking for this, and was changing the host name to an
3543 empty string, assuming it had been canonicized.
3544
3545 5. Although rare, it is permitted to have more than one PTR record for a given
3546 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3547 all the names associated with an address, because they do in Solaris.
3548 However, it seems that they do not in Linux for data that comes from the
3549 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3550 I found this out when I moved to a new Linux workstation and tried to run
3551 the Exim test suite.
3552
3553 To get round this problem I have changed the code so that it now does its
3554 own call to the DNS to look up PTR records when searching for a host name.
3555 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3556 addresses that are only in /etc/hosts are still found.
3557
3558 This behaviour is, however, controlled by an option called host_lookup_
3559 order, which defaults to "bydns:byaddr". If people want to use the other
3560 order, or indeed, just use one or the other means of lookup, they can
3561 specify it in this variable.
3562
3563 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3564 some operating systems, this comes back from gethostbyaddr() as an empty
3565 string, and this is what Exim used to test for. However, it seems that in
3566 other systems, "." is yielded. Exim now tests for this case too.
3567
3568 7. The values of check_spool_space and check_log_space are now held internally
3569 as a number of kilobytes instead of an absolute number of bytes. If a
3570 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3571 kilobyte. This means that much larger values can be stored.
3572
3573 8. Exim monitor: an attempt to get the action menu when not actually pointing
3574 at a message produces an empty menu entitled "No message selected". This
3575 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3576 no entries in it ("Shell widget menu has zero width and/or height"). So I
3577 have added a single, blank menu entry in this case.
3578
3579 9. Added ${quote_local_part.
3580
358110. MIME decoding is now applied to the contents of Subject: header lines when
3582 they are logged.
3583
358411. Now that a reference to $sender_host_address automatically causes a reverse
3585 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3586 host lookup before query-style lookups in lists that might use this
3587 variable. This has therefore been abolished, and the "net-" prefix is no
3588 longer necessary for query-style lookups.
3589
359012. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3591 have been a typo for LFLAGS, so it has been changed.
3592
359313. The install script calls Exim with "-C /dev/null" in order to find the
3594 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3595 to be output. Howeve, since Exim outputs its version number before the
3596 error, it didn't break the script. It just looked ugly. I fixed this by
3597 always allowing "-C /dev/null" if the caller is root.
3598