Fix for bug #451: set deliver_freeze = FALSE after unlinking the spool files in order...
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
0e8a9471 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.460 2007/01/23 12:33:08 magnus Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
PH
29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
PH
32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b4ed4da0 53
5dd1517f
PH
54Exim version 4.66
55-----------------
56
57PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
58 fixed by 4.65/MH/01 (is this a record?) are fixed:
59
60 (i) An empty string was always treated as zero by the numeric comparison
61 operators. This behaviour has been restored.
62
63 (ii) It is documented that the numeric comparison operators always treat
64 their arguments as decimal numbers. This was broken in that numbers
65 starting with 0 were being interpreted as octal.
66
67 While fixing these problems I realized that there was another issue that
68 hadn't been noticed. Values of message_size_limit (both the global option
69 and the transport option) were treated as octal if they started with 0.
70 The documentation was vague. These values are now always treated as
71 decimal, and I will make that clear in the documentation.
72
73
93cfa765
TK
74Exim version 4.65
75-----------------
76
77TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
78 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
79 versions. (#438)
80
d6066548
MH
81MH/01 Don't check that the operands of numeric comparison operators are
82 integers when their expansion is in "skipping" mode (fixes bug
83 introduced by 4.64-PH/07).
84
4362ff0d
PH
85PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
86 child addresses, Exim now panics and dies. Previously, because the count
87 is held in a short int, deliveries were likely to be lost. As such a
88 large number of recipients for a single message is ridiculous
89 (performance will be very, very poor), I have chosen to impose a limit
90 rather than extend the field.
91
93cfa765 92
944e9e9c
TF
93Exim version 4.64
94-----------------
aa41d2de 95
21d74bd9
TK
96TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
97 leftover -K file (the existence of which was triggered by #402).
98 While we were at it, introduced process PID as part of the -K
99 filename. This should rule out race conditions when creating
100 these files.
101
102TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
103 processing considerably. Previous code took too long for large mails,
104 triggering a timeout which in turn triggers #401.
105
106TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
107 in the DK code in transports.c. sendfile() is not really portable,
108 hence the _LINUX specificness.
944e9e9c
TF
109
110TF/01 In the add_headers option to the mail command in an Exim filter,
111 there was a bug that Exim would claim a syntax error in any
112 header after the first one which had an odd number of characters
113 in the field name.
114
2b1c6e3a
PH
115PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
116 callout verification, Exim cached a "reject" for the entire domain. This
117 is correct for most verifications, but it is not correct for a recipient
118 verification with use_sender or use_postmaster set, because in that case
119 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
120 case of MAIL FROM:<> rejection from other early rejections (e.g.
121 rejection of HELO). When verifying a recipient using a non-null MAIL
122 address, the cache is ignored if it shows MAIL FROM:<> rejection.
123 Whatever the result of the callout, the value of the domain cache is
124 left unchanged (for any other kind of callout, getting as far as trying
125 RCPT means that the domain itself is ok).
126
1f872c80
PH
127PH/02 Tidied a number of unused variable and signed/unsigned warnings that
128 gcc 4.1.1 threw up.
129
130PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
131 manifest itself as EPIPE rather than ECONNECT. When tidying away a
132 session, the daemon ignores ECONNECT errors and logs others; it now
133 ignores EPIPE as well.
134
d203e649
PH
135PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
136 (quoted-printable decoding).
137
cc2ed8f7 138PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 139 later the small subsequent patch to fix an introduced bug.
f951fd57 140
ddfcd446
PH
141PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
142
d45b1de8
PH
143PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
144
145PH/08 An error is now given if message_size_limit is specified negative.
146
38a0a95f 147PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 148 to be given (somewhat) arbitrary names.
38a0a95f 149
a2405d83
JJ
150JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
151 in 4.64-PH/09.
152
153JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
154 miscellaneous code fixes
155
6ea85e9a
PH
156PH/10 Added the log_reject_target ACL modifier to specify where to log
157 rejections.
158
26da7e20
PH
159PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
160 hostname. This is wrong, because it relates to the incoming message (and
161 probably the interface on which it is arriving) and not to the outgoing
162 callout (which could be using a different interface). This has been
163 changed to use the value of the helo_data option from the smtp transport
164 instead - this is what is used when a message is actually being sent. If
165 there is no remote transport (possible with a router that sets up host
166 addresses), $smtp_active_hostname is used.
6ea85e9a 167
14aa5a05 168PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 169 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
170 (a) The code assumed that strncpy() returns a negative number on buffer
171 overflow, which isn't the case. Replaced with Exim's string_format()
172 function.
173 (b) There were several signed/unsigned issues. I just did the minimum
174 hacking in of casts. There is scope for a larger refactoring.
175 (c) The code used strcasecmp() which is not a standard C function.
176 Replaced with Exim's strcmpic() function.
177 (d) The code set only $1; it now sets $auth1 as well.
178 (e) A simple test gave the error "authentication client didn't specify
179 service in request". It would seem that Dovecot has changed its
180 interface. Fortunately there's a specification; I followed it and
181 changed what the client sends and it appears to be working now.
182
ff75a1f7
PH
183PH/13 Added $message_headers_raw to provide the headers without RFC 2047
184 decoding.
185
e6f6568e
PH
186PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
187 address A is aliased to B and C, where B exists and C does not. Without
188 -v the output is "A verified" because verification stops after a
189 successful redirection if more than one address is generated. However,
190 with -v the child addresses are also verified. Exim was outputting "A
191 failed to verify" and then showing the successful verification for C,
192 with its parentage. It now outputs "B failed to verify", showing B's
193 parentage before showing the successful verification of C.
194
d6f6e0dc
PH
195PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
196 look up a TXT record in a specific list after matching in a combined
197 list.
198
322050c2
PH
199PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
200 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
201 they consult the DNS. I had assumed they would set it the way they
202 wanted; and indeed my experiments on Linux seem to show that in some
203 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
204 To be on the safe side, however, I have now made the interface to
205 host_find_byname() similar to host_find_bydns(), with an argument
206 containing the DNS resolver options. The host_find_byname() function now
207 sets these options at its start, just as host_find_bydns() does. The smtp
208 transport options dns_qualify_single and dns_search_parents are passed to
209 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
210 of host_find_byname() use the default settings of RES_DEFNAMES
211 (qualify_single) but not RES_DNSRCH (search_parents).
212
08955dd3
PH
213PH/17 Applied (a modified version of) Nico Erfurth's patch to make
214 spool_read_header() do less string testing, by means of a preliminary
215 switch on the second character of optional "-foo" lines. (This is
216 overdue, caused by the large number of possibilities that now exist.
217 Originally there were few.) While I was there, I also converted the
218 str(n)cmp tests so they don't re-test the leading "-" and the first
219 character, in the hope this might squeeze out yet more improvement.
220
1eccaa59
PH
221PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
222 flag allowing group syntax was set by the header_syntax check but not
223 turned off, possible causing trouble later; (2) The flag was not being
224 set at all for the header_verify test, causing "group"-style headers to
225 be rejected. I have now set it in this case, and also caused header_
226 verify to ignore an empty address taken from a group. While doing this, I
227 came across some other cases where the code for allowing group syntax
228 while scanning a header line wasn't quite right (mostly, not resetting
229 the flag correctly in the right place). These bugs could have caused
230 trouble for malformed header lines. I hope it is now all correct.
231
602e59e5
PH
232PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
233 with the "reply" argument non-NULL. The code, however (which originally
234 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
235 but it didn't always do it. This confused somebody who was copying the
236 code for some other use. I have removed all the tests.
237
411ef850
PH
238PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
239 feature that was used to support insecure browsers during the U.S. crypto
240 embargo. It requires special client support, and Exim is probably the
241 only MTA that supported it -- and would never use it because real RSA is
242 always available. This code has been removed, because it had the bad
243 effect of slowing Exim down by computing (never used) parameters for the
244 RSA_EXPORT functionality.
245
7befa435
PH
246PH/21 On the advice of Timo Sirainen, added a check to the dovecot
247 authenticator to fail if there's a tab character in the incoming data
248 (there should never be unless someone is messing about, as it's supposed
249 to be base64-encoded). Also added, on Timo's advice, the "secured" option
250 if the connection is using TLS or if the remote IP is the same as the
251 local IP, and the "valid-client-cert option" if a client certificate has
252 been verified.
253
48da4259 254PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
255 authenticators. This can be used for authorization after authentication
256 succeeds. (In the case of plaintext, it servers for both authentication
257 and authorization.)
258
48da4259
PH
259PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
260 if any retry times were supplied.
261
d1d5595c
PH
262PH/24 Exim crashed if verify=helo was activated during an incoming -bs
263 connection, where there is no client IP address to check. In this
264 situation, the verify now always succeeds.
265
0ef732d9
PH
266PH/25 Applied John Jetmore's -Mset patch.
267
328895cc
PH
268PH/26 Added -bem to be like -Mset, but loading a message from a file.
269
fd700877
PH
270PH/27 In a string expansion for a processed (not raw) header when multiple
271 headers of the same name were present, leading whitespace was being
272 removed from all of them, but trailing whitespace was being removed only
273 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
274 before concatenation. Completely empty headers in a concatenation (as
275 before) are ignored.
fd700877 276
8dce1a6f
PH
277PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
278 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
279
17af4a17
PH
280PH/29 [Removed. This was a change that I later backed out, and forgot to
281 correct the ChangeLog entry (that I had efficiently created) before
282 committing the later change.]
f6c332bd
PH
283
284PH/30 Exim was sometimes attempting to deliver messages that had suffered
285 address errors (4xx response to RCPT) over the same connection as other
286 messages routed to the same hosts. Such deliveries are always "forced",
287 so retry times are not inspected. This resulted in far too many retries
288 for the affected addresses. The effect occurred only when there were more
289 hosts than the hosts_max_try setting in the smtp transport when it had
290 the 4xx errors. Those hosts that it had tried were not added to the list
291 of hosts for which the message was waiting, so if all were tried, there
292 was no problem. Two fixes have been applied:
293
294 (i) If there are any address or message errors in an SMTP delivery, none
295 of the hosts (tried or untried) are now added to the list of hosts
296 for which the message is waiting, so the message should not be a
297 candidate for sending over the same connection that was used for a
298 successful delivery of some other message. This seems entirely
299 reasonable: after all the message is NOT "waiting for some host".
300 This is so "obvious" that I'm not sure why it wasn't done
301 previously. Hope I haven't missed anything, but it can't do any
302 harm, as the worst effect is to miss an optimization.
303
304 (ii) If, despite (i), such a delivery is accidentally attempted, the
305 routing retry time is respected, so at least it doesn't keep
306 hammering the server.
307
c1114884
PH
308PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
309 in ${readsocket because some servers need this prod.
310
7a0743eb
PH
311PH/32 Added some extra debug output when updating a wait-xxx database.
312
0d85fa3f
PH
313PH/33 The hint "could be header name not terminated by colon", which has been
314 given for certain expansion errors for a long time, was not being given
315 for the ${if def:h_colon_omitted{... case.
316
1bf43b78
PH
317PH/34 The spec says: "With one important exception, whenever a domain list is
318 being scanned, $domain contains the subject domain." There was at least
319 one case where this was not true.
320
520de300
PH
321PH/35 The error "getsockname() failed: connection reset by peer" was being
322 written to the panic log as well as the main log, but it isn't really
323 panic-worthy as it just means the connection died rather early on. I have
324 removed the panic log writing for the ECONNRESET error when getsockname()
325 fails.
326
48c7f9e2
PH
327PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
328 runs only) independently of the message's sender address. This meant
329 that, if the 4xx error was in fact related to the sender, a different
330 message to the same recipient with a different sender could confuse
331 things. In particualar, this can happen when sending to a greylisting
332 server, but other circumstances could also provoke similar problems.
333 I have changed the default so that the retry time for these errors is now
334 based a combination of the sender and recipient addresses. This change
335 can be overridden by setting address_retry_include_sender=false in the
336 smtp transport.
337
99ea1c86
PH
338PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
339 remote server are returned as part of bounce messages. This was not
340 happening for LMTP over a pipe (the lmtp transport), but now it is the
341 same for both kinds of LMTP.
342
a2042e78
PH
343PH/38 Despite being documented as not happening, Exim was rewriting addresses
344 in header lines that were in fact CNAMEs. This is no longer the case.
345
4fbcfc2e
PH
346PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
347 and queue runs started by the daemon processed all messages. This has
348 been fixed so that -R and -S can now usefully be given with -q<time>.
349
aa41d2de
PH
350PH/40 Import PCRE release 6.7 (fixes some bugs).
351
af561417
PH
352PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
353
3cc66b45
PH
354PH/42 Give an error if -q is specified more than once.
355
194cc0e4
PH
356PH/43 Renamed the variables $interface_address and $interface_port as
357 $received_ip_address and $received_port, to make it clear that these
358 values apply to message reception, and not to the outgoing interface when
359 a message is delivered. (The old names remain recognized, of course.)
360
a401ddaa
PH
361PH/44 There was no timeout on the connect() call when using a Unix domain
362 socket in the ${readsocket expansion. There now is.
363
4e88a19f
PH
364PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
365 be meaningful with "accept".
366
d7d7b289
SC
367SC/01 Eximstats V1.43
368 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
369
370SC/02 Eximstats V1.44
371 Use a glob alias rather than an array ref in the generated
372 parser. This improves both readability and performance.
373
374SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
375 Collect SpamAssassin and rejection statistics.
376 Don't display local sender or destination tables unless
377 there is data to show.
378 Added average volumes into the top table text output.
379
380SC/04 Eximstats V1.46
381 Collect data on the number of addresses (recipients)
382 as well as the number of messages.
383
384SC/05 Eximstats V1.47
385 Added 'Message too big' to the list of mail rejection
386 reasons (thanks to Marco Gaiarin).
387
388SC/06 Eximstats V1.48
389 Mainlog lines which have GMT offsets and are too short to
390 have a flag are now skipped.
391
392SC/07 Eximstats V1.49 (Alain Williams)
393 Added the -emptyok flag.
394
395SC/08 Eximstats V1.50
396 Fixes for obtaining the IP address from reject messages.
397
0ea2a468
JJ
398JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
399 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
400 whitesspace changes from 4.64-PH/27
401
402JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
403 match 4.64-PH/13
404
405JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
406 are found, allow negative numbers in numeric criteria)
407
408JJ/06 exipick.20061117.2, added new $message_body_missing variable
409
410JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
411 to match changes made in 4.64-PH/43
412
8a10f5a4
PH
413PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
414
30e18802
PH
415PH/47 Put in an explicit test for a DNS lookup of an address record where the
416 "domain" is actually an IP address, and force a failure. This locks out
417 those revolvers/nameservers that support "A-for-A" lookups, in
418 contravention of the specifications.
419
55728a4f
PH
420PH/48 When a host name was looked up from an IP address, and the subsequent
421 forward lookup of the name timed out, the host name was left in
422 $sender_host_name, contrary to the specification.
d7d7b289 423
d7837193
PH
424PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
425 restricted to single-key lookups, Exim was not diagnosing an error if
426 * or *@ was used with a query-style lookup.
427
87054a31
PH
428PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
429
ea2c01d2
MH
430MH/01 local_scan ABI version incremented to 1.1. It should have been updated
431 long ago, but noone interested enough thought of it. Let's just say that
432 the "1.1" means that there are some new functions that weren't there at
433 some point in the past.
434
e4fa6968
PH
435PH/51 Error processing for expansion failure of helo_data from an smtp
436 transport during callout processing was broken.
437
56f5d9bd
PH
438PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
439 tested/used via the -bh/-bhc/-bs options.
440
922e1c28
PH
441PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
442 bug, fixed in subsequent PCRE releases).
443
21eb6e72
PH
444PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
445 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
446
a0540757
PH
447PH/55 Check for a ridiculously long file name in exim_dbmbuild.
448
944e9e9c 449
478be7b0
SC
450Exim version 4.63
451-----------------
452
453SC/01 Use a glob alias rather than an array ref in eximstats generated
454 parser. This improves both readability and performance.
455
456SC/02 Collect SpamAssassin and rejection statistics in eximstats.
457 Don't display local sender or destination tables in eximstats unless
458 there is data to show.
459 Added average volumes into the eximstats top table text output.
460
461SC/03 Collect data on the number of addresses (recipients) as well
462 as the number of messages in eximstats.
463
2b965a65
TF
464TF/01 Correct an error in the documentation for the redirect router. Exim
465 does (usually) call initgroups() when daemonizing.
478be7b0 466
45b91596
PH
467TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
468 with consistent privilege compared to when running as a daemon.
478be7b0 469
c59f5781
TF
470TF/03 Note in the spec that $authenticated_id is not set for local
471 submissions from trusted users.
472
90fc3069
TF
473TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
474 Thanks to Dean Brooks <dean@iglou.com> for the patch.
475
6083aca0
TF
476TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
477 by adding some example configuration directives to the default
478 configuration file. A little bit of work is required to uncomment the
479 directives and define how usernames and passwords are checked, but
480 there is now a framework to start from.
481
765b530f
PH
482PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
483 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
484 without this. I don't know how relevant this is to other LDAP libraries.
485
4e167a8c
PH
486PH/02 Add the verb name to the "unknown ACL verb" error.
487
4608d683
PH
488PH/03 Magnus Holmgren's patch for filter_prepend_home.
489
b8dc3e4a
PH
490PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
491
5418e93b
PH
492PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
493 directory not expanded when it should be if an expanded home directory
494 was set for the address (which is overridden by the transport).
495
b4a9bda2
PH
496PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
497 libradius.
498
45b91596
PH
499PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
500 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
501 because it is too late at that time, and has no effect.
502
5547e2c5
PH
503PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
504 security issue with \' (bugzilla #107). I could not use the
505 PQescapeStringConn() function, because it needs a PGconn value as one of
506 its arguments.
507
dbcef0ea
PH
508PH/08 When testing addresses using -bt, indicate those final addresses that
509 are duplicates that would not cause an additional delivery. At least one
510 person was confused, thinking that -bt output corresponded to deliveries.
511 (Suppressing duplicates isn't a good idea as you lose the information
512 about possibly different redirections that led to the duplicates.)
513
25257489
PH
514PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
515 systems where poll() doesn't work, in particular OS X.
516
c816d124
PH
517PH/10 Added more information to debugging output for retry time not reached.
518
a9ccd69a
PH
519PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
520 operations in malware.c.
521
75fa1910
PH
522PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
523 signatures.
524
a7d7aa58
PH
525PH/13 If write_rejectlog was set false when logging was sent to syslog with
526 syslog_duplication set false, log lines that would normally be written
527 both the the main log and to the reject log were not written to syslog at
528 all.
529
42119b09
PH
530PH/14 In the default configuration, change the use of "message" in ACL warn
531 statements to "add_header".
532
41609df5
PH
533PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
534 not followed by a command (e.g. "seen endif").
535
a5bd321b
PH
536PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
537 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
538 latter.
539
e85a7ad5 540PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
541 so that it is now:
542
e85a7ad5
PH
543 ${if or { \
544 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
545 { match{$h_precedence:}{(?i)bulk|list|junk} } \
546 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
547 }{no}{yes}}
548
e85a7ad5
PH
549 The Auto-Submitted: and various List- headers are standardised, whereas I
550 don't think Precedence: ever was.
5dff5817 551
d8fe1c03
PH
552PH/18 Refactored debugging code in route_finduser() to show more information,
553 in particular, the error code if getpwnam() issues one.
554
16282d2b
PH
555PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
556 This is apparently needed in addition to the PH/07 change above to avoid
557 any possible encoding problems.
558
35d40a98
PH
559PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
560 but not after initializing Perl.
561
034d99ab
PH
562PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
563 output them only if debugging. By default they are written stderr,
564 apparently, which is not desirable.
565
6ec97b1b
PH
566PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
567 queries.
568
e22ca4ac
JJ
569JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
570 --not options
571
572JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
573
33d73e3b
PH
574PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
575 authenticated or an ident call has been made. Suppress the default
576 values for $authenticated_id and $authenticated_sender (but permit -oMai
577 and -oMas) when testing with -bh.
578
9ecb03f3
PH
579PH/24 Re-jigged the order of the tests in the default configuration so that the
580 tests for valid domains and recipients precede the DNS black list and CSA
581 tests, on the grounds that those ones are more expensive.
582
084efe8d
PH
583PH/25 Exim was not testing for a space following SMTP commands such as EHLO
584 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
585 This bug exists in every version of Exim that I still have, right back to
586 0.12.
587
366fc9f0
PH
588PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
589 However, an attempt to turn on case-sensitivity in a regex key by
590 including (?-i) didn't work because the subject string was already
591 lowercased, and the effects were non-intuitive. It turns out that a
592 one-line patch can be used to allow (?-i) to work as expected.
593
c59f5781 594
c887c79e
TF
595Exim version 4.62
596-----------------
597
598TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
599 other effects) broke the use of negated acl sub-conditions.
600
1cce3af8
PH
601PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
602 patch).
603
afb3eaaf
PH
604PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
605 "Deny" causes Exim to reject the incoming connection with a 554 error.
606 Unfortunately, if there is a major crisis, such as a disk failure,
607 tcp-wrappers gives "deny", whereas what one would like would be some
608 kind of temporary error. A kludge has been added to help with this.
609 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
610 554 error is used if errno is still zero or contains ENOENT (which occurs
611 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
612 451 error is used.
613
e173618b
PH
614PH/03 Add -lutil to the default FreeBSD LIBS setting.
615
dd16e114
PH
616PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
617 errors. Otherwise a message that provokes a temporary error (when other
618 messages do not) can cause a whole host to time out.
619
f7fd3850
PH
620PH/05 Batch deliveries by appendfile and pipe transports did not work when the
621 addresses were routed directly to files or pipes from a redirect router.
622 File deliveries just didn't batch; pipe deliveries might have suffered
623 odd errors.
624
d87df92c
PH
625PH/06 A failure to get a lock for a hints database would erroneously always say
626 "Failed to get write lock", even when it was really a read lock.
627
7e9f683d
PH
628PH/07 The appendfile transport was creating MBX lock files with a fixed mode
629 of 0600. This has been changed to use the value of the lockfile_mode
630 option (which defaults to 0600).
631
bfad5236
PH
632PH/08 Applied small patch from the Sieve maintainer.
633
01c490df
PH
634PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
635 folder from quota calculations, a direct delivery into this folder messed
636 up the contents of the maildirsize file. This was because the regex was
637 used only to exclude .Trash (or whatever) when the size of the mailbox
638 was calculated. There was no check that a delivery was happening into an
639 excluded directory. This bug has been fixed by ignoring all quota
640 processing for deliveries into excluded directories.
641
d6629cdc
PH
642PH/10 Added the maildirfolder_create_regex option to appendfile.
643
1cce3af8 644
214e2000
PH
645Exim version 4.61
646-----------------
647
648PH/01 The code for finding all the local interface addresses on a FreeBSD
649 system running IPv6 was broken. This may well have applied to all BSD
650 systems, as well as to others that have similar system calls. The broken
651 code found IPv4 interfaces correctly, but gave incorrect values for the
652 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
653 that it would not match correctly against @[] and not recognize the IPv6
654 addresses as local.
655
f9daeae0
PH
656PH/02 The ipliteral router was not recognizing addresses of the form user@
657 [ipv6:....] because it didn't know about the "ipv6:" prefix.
658
7e66e54d
PH
659PH/03 Added disable_ipv6.
660
c8ea1597
PH
661PH/04 Changed $reply_address to use the raw form of the headers instead of the
662 decoded form, because it is most often used to construct To: headers
663 lines in autoreplies, and the decoded form may well be syntactically
664 invalid. However, $reply_address has leading white space removed, and all
665 newlines turned into spaces so that the autoreply transport does not
666 grumble.
667
911f6fde
PH
668PH/05 If group was specified without a user on a router, and no group or user
669 was specified on a transport, the group from the router was ignored.
670
47ca6d6c
PH
671PH/06 Increased the number of ACL variables to 20 of each type, and arranged
672 for visible compile-time settings that can be used to change these
673 numbers, for those that want even more. Backwards compatibility with old
674 spool files has been maintained. However, going back to a previous Exim
675 release will lost any variables that are in spool files.
676
ed0e9820
PH
677PH/07 Two small changes when running in the test harness: increase delay when
678 passing a TCP/IP connection to a new process, in case the original
679 process has to generate a bounce, and remove special handling of
680 127.0.0.2 (sic), which is no longer necessary.
681
eff37e47
PH
682PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
683 be the same on different OS.
684
1921d2ea
PH
685PH/09 Moved a debug statement in filter processing to avoid a race problem when
686 testing.
687
b3f69ca8
JJ
688JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
689 whether --show-vars was specified or not
690
691JJ/02 exipick: Added support for new ACL variable spool format introduced
692 in 4.61-PH/06
693
424a1c63
PH
694PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
695 syntactically invalid From: or Reply-to: line, and a filter used this to
696 generate an autoreply, and therefore failed to obtain an address for the
697 autoreply, Exim could try to deliver to a non-existent relative file
698 name, causing unrelated and misleading errors. What now happens is that
699 it logs this as a hard delivery error, but does not attempt to create a
700 bounce message.
701
7a100415
PH
702PH/11 The exinext utility has a -C option for testing purposes, but although
703 the given file was scanned by exinext itself; it wasn't being passed on
704 when Exim was called.
705
19b9dc85
PH
706PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
707 an end-of-file indication when reading a command response.
708
309bd837
PH
709PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
710 compiled. In many other places in Exim, IPv6 addresses are always
711 recognized, so I have changed this. It also means that IPv4 domain
712 literals of the form [IPV4:n.n.n.n] are now always recognized.
713
59e82a2a
PH
714PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
715 used if the router is not running as root, for example, when verifying at
716 ACL time, or when using -bh. The debugging output from this situation was
717 non-existent - all you got was a failure to exec. I have made two
718 changes:
719
720 (a) Failures to set uid/gid, the current directory, or a process leader
721 in a subprocess such as that created by queryprogram now generate
722 suitable debugging ouput when -d is set.
723
724 (b) The queryprogram router detects when it is not running as root,
725 outputs suitable debugging information if -d is set, and then runs
726 the subprocess without attempting to change uid/gid.
727
9edc04ce
PH
728PH/15 Minor change to Makefile for building test_host (undocumented testing
729 feature).
730
1349e1e5
PH
731PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
732 additional section of a DNS packet that returns MX or SRV records.
733 Instead, it always explicitly searches for A/AAAA records. This avoids
734 major problems that occur when a DNS server includes only records of one
735 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
736 fixed another bug: if SRV records were looked up and the corresponding
737 address records were *not* found in the additional section, the port
738 values from the SRV records were lost.
739
ea49d0e1
PH
740PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
741 using the correct key (the original address) when searching the retry
742 rules in order to find which one to use for generating the retry hint.
743
064a94c9
PH
744PH/18 If quota_warn_message contains a From: header, Exim now refrains from
745 adding the default one. Similarly, if it contains a Reply-To: header, the
746 errors_reply_to option, if set, is not used.
747
727071f8
PH
748PH/19 When calculating a retry time, Exim used to measure the "time since
749 failure" by looking at the "first failed" field in the retry record. Now
750 it does not use this if it is later than than the arrival time of the
751 message. Instead it uses the arrival time. This makes for better
752 behaviour in cases where some deliveries succeed, thus re-setting the
753 "first failed" field. An example is a quota failure for a huge message
754 when small messages continue to be delivered. Without this change, the
755 "time since failure" will always be short, possible causing more frequent
756 delivery attempts for the huge message than are intended.
dd16e114 757 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 758
f78eb7c6
PH
759PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
760 $1, $2, $3) because the numerical variables can be reset during some
761 expansion items (e.g. "match"), thereby losing the authentication data.
762
21c28500
PH
763PH/21 Make -bV show the size of off_t variables so that the test suite can
764 decide whether to run tests for quotas > 2G.
765
766PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
767 mailbox_size, and mailbox_filecount in the appendfile transport. If a
768 filecount value is greater than 2G or if a quota value is greater than 2G
769 on a system where the size of off_t is not greater than 4, a panic error
770 is given.
771
1688f43b
PH
772PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
773 never match. The debug and -bh output now contains an explicit error
774 message indicating a malformed IPv4 address or mask.
775
776PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
777 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
778 PH/23 above applies.
779
9675b384
PH
780PH/25 Do not write to syslog when running in the test harness. The only
781 occasion when this arises is a failure to open the main or panic logs
782 (for which there is an explicit test).
783
6a3f1455
PH
784PH/26 Added the /no_tell option to "control=freeze".
785
dac79d3e
PH
786PH/27 If a host name lookup failed very early in a connection, for example, if
787 the IP address matched host_lookup and the reverse lookup yielded a name
788 that did not have a forward lookup, an error message of the form "no IP
789 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
790 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 791
5977a0b3
PH
792PH/28 An enabling patch from MH: add new function child_open_exim2() which
793 allows the sender and the authenticated sender to be set when
794 submitting a message from within Exim. Since child_open_exim() is
795 documented for local_scan(), the new function should be too.
796
c91535f3
PH
797PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
798 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
799 results in an empty string is now treated as unset.
800
0d46a8c8
PH
801PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
802
278c6e6c
PH
803PH/31 Added sender_verify_fail logging option.
804
2cbb4081
PH
805PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
806 needed by RFC 822 but not by RFC 2822 was commented out. I have now
807 tidied the source and removed it altogether.
808
3eef829e
PH
809PH/33 When a queue run was abandoned because the load average was too high, a
810 log line was always written; now it is written only if the queue_run log
811 selector is set. In addition, the log line for abandonment now contains
812 information about the queue run such as the pid. This is always present
813 in "start" and "stop" lines but was omitted from the "abandon" line.
814
1ab95fa6
PH
815PH/34 Omit spaces between a header name and the colon in the error message that
816 is given when verify = headers_syntax fails (if there are lots of them,
817 the message gets confusing).
818
230205fc
PH
819PH/35 Change the default for dns_check_names_pattern to allow slashes within
820 names, as there are now some PTR records that contain slashes. This check
821 is only to protect against broken name servers that fall over on strange
822 characters, so the fact that it applies to all lookups doesn't matter.
823
75e0e026
PH
824PH/36 Now that the new test suite is complete, we can remove some of the
825 special code in Exim that was needed for the old test suite. For example,
826 sorting DNS records because real resolvers return them in an arbitrary
827 order. The new test suite's fake resolver always returns records in the
828 same order.
829
830PH/37 When running in the test harness, use -odi for submitted messages (e.g.
831 bounces) except when queue_only is set, to avoid logging races between
832 the different processes.
833
145396a6
PH
834PH/38 Panic-die if .include specifies a non-absolute path.
835
3cd34f13
PH
836PH/39 A tweak to the "H" retry rule from its user.
837
11121d3d
JJ
838JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
839 a label. They prevented compilation on older perls.
840
841JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
842 a warning to be raised on newish perls.
843
844JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
845 on queue. Changes to match documented behaviour of showing count of
846 messages matching specified criteria.
847
8def5aaf
PH
848PH/40 Changed the default ident timeout from 30s to 5s.
849
929ba01c
PH
850PH/41 Added support for the use of login_cap features, on those BSD systems
851 that have them, for controlling the resources used by pipe deliveries.
852
2632889e
PH
853PH/42 The content-scanning code uses fopen() to create files in which to put
854 message data. Previously it was not paying any attention to the mode of
855 the files. Exim runs with umask(0) because the rest of the code creates
856 files with open(), and sets the required mode explicitly. Thus, these
857 files were ending up world-writeable. This was not a big issue, because,
858 being within the spool directory, they were not world-accessible. I have
859 created a function called modefopen, which takes an additional mode
860 argument. It sets umask(777), creates the file, chmods it to the required
861 mode, then resets the umask. All the relevant calls to fopen() in the
862 content scanning code have been changed to use this function.
863
944a9c55
PH
864PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
865 to 24 hours. This avoids potential overflow problems when processing G
866 and H retry rules. I suspect nobody ever tinkers with this value.
867
4a23603b
PH
868PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
869
4730f942
PH
870PH/45 When the plaintext authenticator is running as a client, the server's
871 challenges are checked to ensure they are valid base64 strings. By
872 default, the authentication attempt is cancelled if an invalid string is
873 received. Setting client_ignore_invalid_base64 true ignores these errors.
874 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
875 they are received. Thus, the responses can be made to depend on the
876 challenges. If an invalid string is ignored, an empty string is placed in
877 the variable.
878
30dba1e6
PH
879PH/46 Messages that are created by the autoreply transport now contains a
880 References: header, in accordance with RFCs 2822 and 3834.
881
382afc6b
PH
882PH/47 Added authenticated_sender_force to the smtp transport.
883
a86229cf
PH
884PH/48 The ${prvs expansion was broken on systems where time_t was long long.
885
50c99ba6
PH
886PH/49 Installed latest patch from the Sieve maintainer.
887
d35e429d
PH
888PH/50 When an Exim quota was set without a file count quota, and mailbox_size
889 was also set, the appendfile transport was unnecessarily scanning a
890 directory of message files (e.g. for maildir delivery) to find the count
891 of files (along with the size), even though it did not need this
892 information. It now does the scan only if it needs to find either the
893 size of the count of files.
894
f90d018c
PH
895PH/51 Added ${time_eval: to convert Exim time strings into seconds.
896
75def545
PH
897PH/52 Two bugs concerned with error handling when the smtp transport is
898 used in LMTP mode:
899
900 (i) Exim was not creating retry information for temporary errors given
901 for individual recipients after the DATA command when the smtp transport
902 was used in LMTP mode. This meant that they could be retried too
903 frequently, and not timed out correctly.
904
905 (ii) Exim was setting the flag that allows error details to be returned
906 for LMTP errors on RCPT commands, but not for LMTP errors for individual
907 recipients that were returned after the DATA command.
908
909PH/53 This is related to PH/52, but is more general: for any failing address,
910 when detailed error information was permitted to be returned to the
911 sender, but the error was temporary, then after the final timeout, only
912 "retry timeout exceeded" was returned. Now it returns the full error as
913 well as "retry timeout exceeded".
914
c46782ef
PH
915PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
916 do this, and (what is worse) MTAs that accept it.
917
71fafd95
PH
918PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
919 will now be deprecated.
920
2c5db4fd
PH
921PH/56 New os.c-cygwin from the Cygwin maintainer.
922
9cf6b11a
JJ
923JJ/06 exipick: added --unsorted option to allow unsorted output in all output
924 formats (previously only available in exim formats via -bpr, -bpru,
925 and -bpra. Now also available in native and exiqgrep formats)
926
927JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
928 with very large, slow to parse queues
929
930JJ/08 exipick: added ! as generic prefix to negate any criteria format
931
932JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
933
898d150f
PH
934PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
935 responses to authentication challenges, though it was showing the
936 challenges; (ii) I've removed the CR characters from the debug output for
937 SMTP output lines.
938
46218253
PH
939PH/58 Allow for the insertion of a newline as well as a space when a string
940 is turned into more than one encoded-word during RFC 2047 encoding. The
941 Sieve code now uses this.
942
e97957bc
PH
943PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
944 data_4xx, lost_connection, tls_required.
945
81e509d7
PH
946PH/60 When a VRFY deferred or FAILED, the log message rather than the user
947 message was being sent as an SMTP response.
948
3d240ff7
PH
949PH/61 Add -l and -k options to exicyclog.
950
b37c4101
PH
951PH/62 When verifying, if an address was redirected to one new address, so that
952 verification continued, and the new address failed or deferred after
953 having set something in $address_data, the value of $address_data was not
954 passed back to the ACL. This was different to the case when no
955 redirection occurred. The value is now passed back in both cases.
956
79378e0f
PH
957PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
958 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
959 use login_cap.h, so on its own it isn't the distinguishing feature. The
960 new name refers directly to the setclassresources() function.
961
e49c7bb4
PH
962PH/65 Added configuration files for NetBSD3.
963
d114ec46
PH
964PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
965
f3d7df6c
PH
966PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
967 is preferred over IPv4.
968
715ab376
PH
969PH/68 The bounce_return_message and bounce_return_body options were not being
970 honoured for bounces generated during the reception of non-SMTP messages.
971 In particular, this applied to messages rejected by the ACL. This bug has
972 been fixed. However, if bounce_return_message is true and bounce_return_
973 body is false, the headers that are returned for a non-SMTP message
974 include only those that have been read before the error was detected.
975 (In the case of an ACL rejection, they have all been read.)
976
6b31b150
PH
977PH/69 The HTML version of the specification is now built in a directory called
978 spec_html instead of spec.html, because the latter looks like a path with
979 a MIME-type, and this confuses some software.
980
981PH/70 Catch two compiler warnings in sieve.c.
982
d515a917
PH
983PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
984 function verify_get_ident() calls ip_connect() to connect a socket, but
985 if the "connect()" function timed out, ip_connect() used to close the
986 socket. However, verify_get_ident() also closes the socket later, and in
987 between Exim writes to the log, which may get opened at this point. When
988 the socket was closed in ip_connect(), the log could get the same file
989 descriptor number as the socket. This naturally causes chaos. The fix is
990 not to close the socket in ip_connect(); the socket should be closed by
991 the function that creates it. There was only one place in the code where
992 this was missing, in the iplookup router, which I don't think anybody now
993 uses, but I've fixed it anyway.
994
9b8fadde
PH
995PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
996 well as to direct DNS lookups. Otherwise the handling of names in host
997 lists is inconsistent and therefore confusing.
998
214e2000 999
5de37277
PH
1000Exim version 4.60
1001-----------------
1002
cc38ddbf
PH
1003PH/01 Two changes to the default runtime configuration:
1004
1005 (1) Move the checks for relay_from_hosts and authenticated clients from
1006 after to before the (commented out) DNS black list checks.
1007
1008 (2) Add control=submission to the relay_from_hosts and authenticated
1009 clients checks, on the grounds that messages accepted by these
1010 statements are most likely to be submissions.
5de37277 1011
72fdd6ae
PH
1012PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1013
1014 (1) Generate an error if the third argument for the ${prvs expansion is
1015 not a single digit.
1016
1017 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1018 string.
1019
1020 (3) Reset the variables that are obtained from the first argument of
1021 ${prvscheck and used in the second argument before leaving the code,
1022 because their memory is reclaimed, so using them afterwards may do
1023 silly things.
1024
1025 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1026 one (it's much easier than Tom thought :-).
1027
1028 (5) Because of (4), we can now allow for the use of $prvscheck_result
1029 inside the third argument.
cb9328de 1030
cb741023
PH
1031PH/03 For some reason, the default setting of PATH when running a command from
1032 a pipe transport was just "/usr/bin". I have changed it to
1033 "/bin:/usr/bin".
1034
f174f16e
PH
1035PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1036 anything to be listed in the output from -bV.
b2f5a032 1037
c25242d7
PH
1038PH/05 When a filter generated an autoreply, the entire To: header line was
1039 quoted in the delivery log line, like this:
1040
1041 => >A.N.Other <ano@some.domain> <original@ddress> ...
1042
1043 This has been changed so that it extracts the operative address. There
1044 may be more than one such address. If so, they are comma-separated, like
1045 this:
1046
1047 => >ano@some.domain,ona@other.domain <original@ddress> ...
1048
82c19f95
PH
1049PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1050 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1051 not being looked up in the rDNS to get a host name, Exim was showing the
1052 IP address twice in Received: lines, even though the IP addresses were
1053 identical. For example:
1054
1055 Received: from [1.2.3.4] (helo=[1.2.3.4])
1056
1057 However, if the real host name was known, it was omitting the HELO data
1058 if it matched the actual IP address. This has been tidied up so that it
1059 doesn't show the same IP address twice.
1060
d7ffbc12
PH
1061PH/07 When both +timestamp and +memory debugging was on, the value given by
1062 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1063 called by the debug printing, thereby overwriting the timestamp buffer.
1064 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1065
9f526266
PH
1066PH/08 When the original message was included in an autoreply transport, it
1067 always said "this is a copy of the message, including all the headers",
1068 even if body_only or headers_only was set. It now gives an appropriate
1069 message.
1070
87fcc8b9
PH
1071PH/09 Applied a patch from the Sieve maintainer which:
1072
1073 o fixes some comments
1074 o adds the (disabled) notify extension core
1075 o adds some debug output for the result of if/elsif tests
1076 o points to the current vacation draft in the documentation
1077 and documents the missing references header update
1078
1079 and most important:
1080
1081 o fixes a bug in processing the envelope test (when testing
1082 multiple envelope elements, the last element determinted the
1083 result)
1084
456682f5
PH
1085PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1086 Electronic Mail") by including:
1087
1088 Auto-submitted: auto-generated
1089
1090 in the messages that it generates (bounce messages and others, such as
1091 warnings). In the case of bounce messages for non-SMTP mesages, there was
1092 also a typo: it was using "Auto_submitted" (underscore instead of
1093 hyphen). Since every message generated by Exim is necessarily in response
1094 to another message, thes have all been changed to:
1095
1096 Auto-Submitted: auto-replied
1097
1098 in accordance with these statements in the RFC:
1099
1100 The auto-replied keyword:
1101
1102 - SHOULD be used on messages sent in direct response to another
1103 message by an automatic process,
1104
1105 - MUST NOT be used on manually-generated messages,
1106
1107 - MAY be used on Delivery Status Notifications (DSNs) and Message
1108 Disposition Notifications (MDNs),
1109
1110 - MUST NOT be used on messages generated by automatic or periodic
1111 processes, except for messages which are automatic responses to
1112 other messages.
1113
3e46c1aa
PH
1114PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1115 to the default Received: header definition.
456682f5 1116
49826d12
PH
1117PH/12 Added log selector acl_warn_skipped (default on).
1118
eba0c039
PH
1119PH/13 After a successful wildlsearch lookup, discard the values of numeric
1120 variables because (a) they are in the wrong storage pool and (b) even if
1121 they were copied, it wouldn't work properly because of the caching.
1122
a0d6ba8a
PH
1123PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1124 checking when decoding. Apparently there are clients that generate
1125 overlong encoded strings. Why am I not surprised?
1126
f0917727
PH
1127PH/15 If the first argument of "${if match_address" was not empty, but did not
1128 contain an "@" character, Exim crashed. Now it writes a panic log message
1129 and treats the condition as false.
1130
096fee00
PH
1131PH/16 In autoreply, treat an empty string for "once" the same as unset.
1132
024bd3c2
PH
1133PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1134 extension "envelope-auth". The code is finished and in agreement with
1135 other implementations, but there is no documentation so far and in fact,
1136 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1137 not changing the active code.
1138
1139 Print executed "if" and "elsif" statements when debugging is used. This
1140 helps a great deal to understand what a filter does.
1141
1142 Document more things not specified clearly in RFC3028. I had all this
1143 sorted out, when out of a sudden new issues came to my mind. Oops."
1144
df199fec
PH
1145PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1146 (Bugzilla #53).
1147
d27f1df3
PH
1148PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1149 canonical form (as documented). However, after a host name lookup from
1150 the IP address, check_host() was doing a simple string comparison with
1151 addresses acquired from the DNS when checking that the found name did
1152 have the original IP as one of its addresses. Since any found IPv6
1153 addresses are likely to be in abbreviated form, the comparison could
1154 fail. Luckily, there already exists a function for doing the comparison
1155 by converting both addresses to binary, so now that is used instead of
1156 the text comparison.
1157
96776534
PH
1158PH/20 There was another similar case to PH/19, when a complete host name was
1159 given in a host list; looking up its IP address could give an abbreviated
1160 form, whereas the current host's name might or might not be abbreviated.
1161 The same fix has been applied.
1162
5de37277 1163
9a799bc0
PH
1164Exim version 4.54
1165-----------------
1166
1167PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1168 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1169 It now does.
1170
99a4b039
PH
1171PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1172 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1173
1174PH/03 Typo: missing ".o" in src/pcre/Makefile.
1175
4b233853
PH
1176PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1177 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1178 Also, for "Auto-Submitted", treat anything other than "no" as
1179 non-personal, in accordance with RFC 3834. (Previously it treated
1180 anything starting "auto-" as non-personal.)
1181
8857ccfd
PH
1182TF/01 The control=submission/name=... option had a problem with syntax
1183 errors if the name included a slash character. The /name= option
1184 now slurps the rest of the string, so it can include any characters
1185 but it must come last in the list of options (after /sender_retain
1186 or /domain=).
1187
433a2980
PH
1188PH/05 Some modifications to the interface to the fake nameserver for the new
1189 testing suite.
1190
3e46c1aa 1191
9a799bc0 1192
e3a311ba
TK
1193Exim version 4.53
1194-----------------
1195
1196TK/01 Added the "success_on_redirect" address verification option. See
1197 NewStuff for rationale and an example.
1198
13b685f9
PH
1199PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1200
395ff96d
PH
1201PH/02 Patch to exigrep to allow it to work on syslog lines.
1202
5b68f6e4
PH
1203PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1204 fread() to skip over the body file's header line, because in Cygwin the
1205 header line is locked and is inaccessible.
1206
1ab52c69
PH
1207PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1208 co-exist for some time) to make it clear that it is the Exim ID that is
1209 referenced, not the Message-ID: header line.
1210
b07e6aa3
PH
1211PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1212 string_format() function, because snprintf() does not exist on all
1213 operating systems.
1214
254e032f
PH
1215PH/06 The use of forbid_filter_existstest now also locks out the use of the
1216 ${stat: expansion item.
1217
3af76a81
PH
1218PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1219 protocol synchronization error", to keep the pedants happy.
1220
2548ba04
PH
1221PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1222 well as for IRIX systems, when gcc is being used. See the host.c source
1223 file for comments.
1224
b6c6011d
PH
1225PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1226
cf39cf57
PH
1227PH/10 Named domain lists were not working if used in a queue_smtp_domains
1228 setting.
1229
f1513293
PH
1230PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1231 transport and to the smtp transport in LMTP mode.
1232
727549a4
PH
1233TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1234
af46795e
PH
1235PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1236 run a filter in a subprocess. This could lead to confusion in subsequent
1237 lookups in the parent process. There should also be a search_tidyup() at
1238 the end of the subprocess.
1239
d7b47fd0
PH
1240PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1241 only if the host matched helo_try_verify_hosts, which caused the
1242 verification to occur when the EHLO/HELO command was issued. The ACL just
1243 tested the remembered result. Now, if a previous verification attempt has
1244 not happened, "verify = helo" does it there and then.
1245
ee744174
JJ
1246JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1247
b582ab87
PH
1248TK/03 Fix log output including CR from clamd.
1249
41a13e0a
PH
1250PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1251 exist provoked a memory error which could cause a segfault.
1252
f625cc5a
PH
1253PH/15 Installed PCRE 6.2
1254
1255PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1256
21f7af35
PH
1257PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1258 of the problem. Specifically, suggested +O2 rather than +O1 for the
1259 HP-UX compiler.
1260
31480e42
PH
1261PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1262
2d280592
PH
1263PH/20 If a delivery was routed to a non-standard port by means of an SRV
1264 record, the port was not correctly logged when the outgoing_port log
1265 selector was set (it logged the transort's default port).
1266
7cd1141b
PH
1267PH/21 Added support for host-specific ports to manualroute, queryprogram,
1268 fallback_hosts, and "hosts" in the smtp transport.
1269
1270PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1271 host errors such as "Connection refused".
1272
750af86e
PH
1273PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1274 authentication with radiusclient 0.4.9:
1275
1276 - Error returned from rc_read_config was caught wrongly
1277 - Username/password not passed on to radius server due to wrong length.
1278
1279 The presumption is that some radiusclient API changes for 4.51/PH/17
1280 were not taken care of correctly. The code is still untested by me (my
1281 Linux distribution still has 0.3.2 of radiusclient), but it was
1282 contributed by a Radius user.
1283
1284PH/24 When doing a callout, the value of $domain wasn't set correctly when
1285 expanding the "port" option of the smtp transport.
1286
4304270b
TK
1287TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1288 while reading a MIME header. Thanks to Tom Hughes for a patch.
1289
750af86e
PH
1290PH/24 Include config.h inside local_scan.h so that configuration settings are
1291 available.
1292
64ffc24f
PH
1293PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1294 that in an ACL for RCPT (for example), you can examine exactly what was
1295 received.
1296
5dd9625b
PH
1297PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1298 commands, but it was not correctly comparing the address with the actual
1299 client host address. Thus, it would show the EHLO address in Received:
1300 header lines when this was not necessary.
1301
5591031b
PH
1302PH/27 Added the % operator to ${eval:}.
1303
ba18e66a
PH
1304PH/28 Exim tries to create and chdir to its spool directory when it starts;
1305 it should be ignoring failures (because with -C, for example, it has lost
1306 privilege). It wasn't ignoring creation failures other than "already
1307 exists".
1308
9cec981f
PH
1309PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1310 -bV or -d is used.
1311
aa2b5c79
PH
1312PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1313 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1314 too many continuations, the temporary file was not being removed, and the
1315 return code was incorrect.
aa2b5c79 1316
48a53b7f
PH
1317PH/31 Missing "BOOL" in function definition in filtertest.c.
1318
1c59d63b
PH
1319PH/32 Applied Sieve patches from the maintainer.
1320
671012da
TK
1321TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1322
1509d3a8
PH
1323PH/33 Added "verify = not_blind".
1324
1325PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1326 Local/Makefile (with some defaults set). These are used in built scripts
1327 such as exicyclog, but they have never been used in the exim_install
1328 script (though there are many overriding facilities there). I have
1329 arranged that the exim_install script now takes note of these two
1330 settings.
1331
1332PH/35 Installed configuration files for Dragonfly.
1333
2fe1a124
PH
1334PH/36 When a locally submitted message by a trusted user did not contain a
1335 From: header, and the sender address was obtained from -f or from an SMTP
1336 MAIL command, and the trusted user did not use -F to supply a sender
1337 name, $originator_name was incorrectly used when constructing a From:
1338 header. Furthermore, $originator_name was used for submission mode
1339 messages from external hosts without From: headers in a similar way,
1340 which is clearly wrong.
1341
8800895a
PH
1342PH/37 Added control=suppress_local_fixups.
1343
ccfdb010
PH
1344PH/38 When log_selector = +received_sender was set, and the addition of the
1345 sender made the log line's construction buffer exactly full, or one byte
1346 less than full, an overflow happened when the terminating "\n" was
1347 subsequently added.
1348
1130bfb0
PH
1349PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1350 when the result of a list match is failure because a DNS lookup failed.
1351
ebcb507f
PH
1352PH/40 RM_COMMAND is now used in the building process.
1353
c35e155c
PH
1354PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1355 the "build-* directories that it finds.
1356
95d1f782
PH
1357PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1358 address in a domain literal was a prefix of an interface address.
1359
fd6de02e
PH
1360PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1361 when verifying a sender address, unless rewrite_headers is false.
1362
58de37c5
PH
1363PH/44 Wrote a long comment about why errors_to addresses are verified as
1364 recipients, not senders.
1365
261cf466
TF
1366TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1367 the ratelimit ACL was added.
1368
3ee512ff
PH
1369PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1370
e08c430f
PH
1371PH/46 Added extra information about PostgreSQL errors to the error string.
1372
bef5a11f
PH
1373PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1374 avoiding the need to install special zones in a real server. This is
1375 backwards compatible; if it can't find the fake resolver, it drops back.
1376 Thus, both old and new test suites can be run.
1377
7546de58
TF
1378TF/02 Added util/ratelimit.pl
1379
e5d5a95f
TF
1380TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1381 clock is set back in time.
1382
2e88a017
TF
1383TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1384 Candler <B.Candler@pobox.com>.
1385
a5f65aa4
TF
1386TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1387 OK for addresses that are the result of redirections.
1388
e7726cbf
PH
1389PH/48 A number of further additions for the benefit of the new test suite,
1390 including a fake gethostbyname() that interfaces to the fake DNS resolver
1391 (see PH/47 above).
1392
a7fdad5b
TF
1393TF/06 The fix for widen_domains has also been applied to qualify_single and
1394 search_parents which are the other dnslookup options that can cause
1395 header rewrites.
1396
6af56900
PH
1397PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1398 type ("H").
1399
0925ede6
PH
1400PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1401
66afa403
TF
1402TF/07 Exim produced the error message "an SRV record indicated no SMTP
1403 service" if it encountered an MX record with an empty target hostname.
1404 The message is now "an MX or SRV record indicated no SMTP service".
1405
0154e85a
TF
1406TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1407 if the DNS of the sending site is misconfigured. This is quite a
1408 common situation. This change restores the behaviour of treating a
1409 helo verification defer as a failure.
1410
16f12c76
PH
1411PH/51 If self=fail was set on a router, the bounce message did not include the
1412 actual error message.
1413
bbe902f0 1414
e5a9dba6
PH
1415Exim version 4.52
1416-----------------
1417
1418TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1419
22c3b60b
PH
1420PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1421 command itself ended in error, the underlying message about the transport
1422 filter timeout was being overwritten with the pipe command error. Now the
1423 underlying error message should be appended to the second error message.
1424
06a9b4b5
PH
1425TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1426
c1ac6996
PH
1427PH/02 Reduce the amount of output that "make" produces by default. Full output
1428 can still be requested.
1429
9c7a242c
PH
1430PH/03 The warning log line about a condition test deferring for a "warn" verb
1431 was being output only once per connection, rather than after each
1432 occurrence (because it was using the same function as for successful
1433 "warn" verbs). This seems wrong, so I have changed it.
1434
87ba3f5f
PH
1435TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1436 it should not have, which might have caused a crash in the right
1437 circumstances, but probably never did.
1438
1439PH/04 Installed a modified version of Tony Finch's patch to make submission
1440 mode fix the return path as well as the Sender: header line, and to
1441 add a /name= option so that you can make the user's friendly name appear
1442 in the header line.
1443
29aba418
TF
1444TF/03 Added the control = fakedefer ACL modifier.
1445
fe0dab11
TF
1446TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1447 Mark Lowes for thorough testing.
870f6ba8 1448
11d337a4
TK
1449TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1450
1451TK/03 Merged latest SRS patch from Miles Wilton.
1452
415c8f3b
PH
1453PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1454 with the definition in sysexits.h (which is #included earlier).
1455 Fortunately, Exim does not actually use EX_OK. The code used to try to
1456 preserve the sysexits.h value, by assumimg that macro definitions were
1457 scanned for macro replacements. I have been disabused of this notion,
1458 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1459
958541e9
PH
1460PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1461 in the smtp transport. When a block could not be written in a single
1462 write() function, the timeout was being re-applied to each part-write.
1463 This seems wrong - if the receiver was accepting one byte at a time it
1464 would take for ever. The timeout is now adjusted when this happens. It
1465 doesn't have to be particularly precise.
1466
c206415f
TK
1467TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1468 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1469
2a4be8f9
PH
1470PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1471 without a domain if the check to <postmaster@domain> fails.
1472
1cba11c5
SC
1473SC/01 Eximstats: added -xls and the ability to specify output files
1474 (patch written by Frank Heydlauf).
1475
1476SC/02 Eximstats: use FileHandles for outputing results.
1477
1478SC/03 Eximstats: allow any combination of xls, txt, and html output.
1479
1480SC/04 Eximstats: fixed display of large numbers with -nvr option
1481
1482SC/05 Eximstats: fixed merging of reports with empty tables.
1483
1484SC/06 Eximstats: added the -include_original_destination flag
1485
1486SC/07 Eximstats: removed tabs and trailing whitespace.
1487
1005d00e
TK
1488TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1489
1490TK/06 MBOX spool code: Add real "From " MBOX separator line
1491 so the .eml file is really in mbox format (even though
1492 most programs do not really care). Patch from Alex Miller.
1493
1494TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1495 The latter is generated from $received_to and is only set if the
1496 message has one envelope recipient. SA can use these headers,
1497 obviously out-of-the-box. Patch from Alex Miller.
1498
9b4768fa
PH
1499PH/08 The ${def test on a variable was returning false if the variable's
1500 value was "0", contrary to what the specification has always said!
1501 The result should be true unless the variable is empty.
1502
1503PH/09 The syntax error of a character other than { following "${if
1504 def:variable_name" (after optional whitespace) was not being diagnosed.
1505 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1506 accidental colon was present, for example, could give incorrect results.
1507
0d7eb84a
PH
1508PH/10 Tidied the code in a number of places where the st_size field of a stat()
1509 result is used (not including appendfile, where other changes are about
1510 to be made).
1511
1512PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1513 This involved changing a lot of size variables from int to off_t. It
1514 should work with maildirs and everything.
1515
40727bee
TK
1516TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1517 spamd dying while we are connected to it.
1518
554d2369
TF
1519TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1520 <jgh@wizmail.org>
1521
1f922db1
PH
1522PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1523 function for BDB 4.3.
1524
ef213c3b
PH
1525PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1526
8ac170f3
PH
1527PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1528 the sources for PCRE have been re-arranged and more files are now
1529 involved.
1530
b1c749bb
PH
1531PH/15 The code I had for printing potentially long long variables in PH/11
1532 above was not the best (it lost precision). The length of off_t variables
1533 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1534 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1535 to be "long long int" or "long int". This is needed for the internal
1536 formatting function string_vformat().
b1c749bb 1537
4aac9b49
PH
1538PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1539 the configuration file to be ":syslog", then the script "guesses" where
1540 the logs files are, rather than using the compiled in default. In our
1541 case the guess is not the same as the compiled default, so the script
1542 suddenly stopped working when I started to use syslog. The patch checks
1543 to see if log_file_path is "". If so, it attempts to read it from exim
1544 with no configuration file to get the compiled in version, before it
1545 falls back to the previous guessing code."
1546
294520c8
TK
1547TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1548 implementing BATV in an Exim configuration. See NewStuff for the gory
1549 details.
1550
5bd022fe
PH
1551PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1552 Makefile that are specific to HP-UX.
1553
90e9ce59
PH
1554PH/18 If the "use_postmaster" option was set for a recipient callout together
1555 with the "random" option, the postmaster address was used as the MAIL
1556 FROM address for the random test, but not for the subsequent recipient
1557 test. It is now used for both.
1558
5ea81592
PH
1559PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1560 patch removes a few documentation additions to RFC 3028, because the
1561 latest draft now contains them. It adds the new en;ascii-case comparator
1562 and a new error check for 8bit text in MIME parts. Comparator and
1563 require names are now matched exactly. I enabled the subaddress
1564 extension, but it is not well tested yet (read: it works for me)."
1565
c6c2dc1d
PH
1566PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1567 rework some of the code of TK/09 above to avoid the hardwired use of
1568 "%lld" and "long long". Replaced the call to snprintf() with a call to
1569 string_vformat().
1570
fffffe4c
PH
1571PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1572 records point to non-existent hosts", "retry timeout exceeded", and
1573 "retry time not reached for any host after a long failure period".
ca02eafb 1574
9a26b6b2
PH
1575PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1576 experimental DomainKeys support:
1577
1578 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1579 (2) On an error such as an illegally used "control", the wrong name for
1580 the control was given.
1581
1582 These problems did NOT occur unless DomainKeys support was compiled.
1583
4aee0225
PH
1584PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1585
32d668a5
PH
1586PH/24 Added ${if match_ip condition.
1587
8187c3f3
PH
1588PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1589 databases so that it will be absolutely obvious if a crash occurs in the
1590 DB library. This is a regular occurrence (often caused by mis-matched
1591 db.h files).
1592
ff790e47 1593PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1594 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1595 picked up on a user's system that detects such things. There doesn't seem
1596 to be a gcc warning option for this - only an attribute that has to be
1597 put on the function's prototype. It seems that in Fedora Core 4 they have
1598 set this on a number of new functions. No doubt there will be more in due
1599 course.
ff790e47 1600
5417f6d1
PH
1601PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1602 specify a transport. However, if an address that was verified by such a
1603 router was the subject of a callout, Exim crashed because it tried to
1604 read the rcpt_include_affixes from the non-existent transport. Now it
1605 just assumes that the setting of that option is false. This bug was
1606 introduced by 4.51/PH/31.
1607
59cf8544
PH
1608PH/28 Changed -d+all to exclude +memory, because that information is very
1609 rarely of interest, but it makes the output a lot bigger. People tend to
1610 do -d+all out of habit.
1611
e7ad8a65
PH
1612PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1613 code in os-type was giving problems when libc.so lives in lib64, like on
1614 x86_64 Fedora Core.
1615
ade42478
PH
1616PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1617 aren't the modern standard, and it seems that some systems' include files
1618 don't always have them. Exim was already checking for some of the newer
1619 ones like T_AAAA, and defining it itself. I've added checks for all the
1620 record types that Exim uses.
1621
182ad5cf
PH
1622PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1623 not automatically generating a new one, as it is supposed to. This
1624 prevented TLS from working. If the file did exist, but contained invalid
1625 data, a new version was generated, as expected. It was only the case of a
1626 non-existent file that was broken.
1627
b0d9fc80
TK
1628TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1629 with a change in libdomainkeys > 0.64.
1630
1631TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1632 from DNS. If the selector record carries the flag, it now has
1633 precedence over the domain-wide flag.
1634
1635TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1636
47c7a64a
PH
1637PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1638 the use of a port name that isn't defined in /etc/services) occurred, the
1639 message was deferred as in a normal delivery, and thus remained on the
1640 spool, instead of being failed because of the mua_wrapper setting. This
1641 is now fixed, and I tidied up some of the mua_wrapper messages at the
1642 same time.
1643
a388bce4
SC
1644SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1645 the messages in a hash of arrays rather than using individual hashes.
1646 This is a bit cleaner and results in dramatic memory savings, albeit
1647 at a slight CPU cost.
1648
1649SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1650 as requested by Marc Sherman.
1651
1652SC/10 Eximstats: added histograms for user specified patterns as requested
1653 by Marc Sherman.
1654
0793e4ed
SC
1655SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1656
c58b88df
PH
1657PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1658 fopen() in the content-scanning modules that did not already have it.
1659
e7ad8a65 1660
7982096b
PH
1661Exim version 4.51
1662-----------------
1663
1a46a8c5
PH
1664TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1665 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1666
2f079f46 1667TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1668
1669TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1670
1671PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1672 to test Sieve filters that use "vacation".
1673
1674PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1675 that changes the way the GnuTLS parameters are stored in the cache file.
1676 The new format can be generated externally. For backward compatibility,
1677 if the data in the cache doesn't make sense, Exim assumes it has read an
1678 old-format file, and it generates new data and writes a new file. This
1679 means that you can't go back to an older release without removing the
1680 file.
1681
1682PH/03 A redirect router that has both "unseen" and "one_time" set does not
1683 work if there are any delivery delays because "one_time" forces the
1684 parent to be marked "delivered", so its unseen clone is never tried
1685 again. For this reason, Exim now forbids the simultaneous setting of
1686 these two options.
1687
1688PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1689 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1690 entry if you want to know the details. The fix, however, neglected to
1691 consider the case when local delivery batching is involved. The test for
1692 "previously delivered" was not happening when checking to see if an
1693 address could be batched with a previous (undelivered) one; under
1694 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1695 address.
1a46a8c5
PH
1696
1697PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1698 in its include files, and this causes problems building Exim.
1699
1700PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1701 header_syntax) but Exim was just ignoring anything given after a slash.
1702 In particular, this caused confusion with an attempt to use "verify =
1703 reverse_host_lookup/defer_ok". An error is now given when options are
1704 supplied for verify items that do not have them. (Maybe reverse_host_
1705 lookup should have a defer_ok option, but that's a different point.)
1706
1707PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1708 defined by RFC 821) to 2048, because there were problems with some AUTH
1709 commands, and RFC 1869 says the size should be increased for extended
1710 SMTP commands that take arguments.
1711
1712PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1713 Finch).
1714
1715PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1716 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1717
49c2d5ea
PH
1718PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1719 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1720 whatever). Otherwise the password may appear in the log. Following change
1721 PH/42 below, there is no longer a chance of it appearing in a bounce
1722 message.
49c2d5ea 1723
bf759a8b
PH
1724PH/11 Installed exipick version 20050225.0 from John Jetmore.
1725
83364d30
PH
1726PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1727 of its addresses was ever tried. (Bugzilla bug #2.)
1728
7999bbd7
PH
1729PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1730 the result incorrectly in the debug output. (It correctly added a newline
1731 to what was transported.)
1732
7dbf77c9
PH
1733TF/01 Added $received_time.
1734
74e0617f
PH
1735PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1736 commented out examples of how to interface to a virus scanner and to
1737 SpamAssassin. Also added commented examples of av_scanner and
1738 spamd_address settings.
1739
2f079f46
PH
1740PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1741 and controls are allowed in which ACLs. There were a couple of minor
1742 errors. Some of the entries in the conditions table (which is a table of
1743 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1744 negation of where the condition IS allowed.
1745
8c841523
PH
1746PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1747
7766a4f0
PH
1748PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1749 header file does not have a version number, so I've had to invent a new
1750 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1751 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1752 radiusclient), but it was contributed by a Radius user.
1753
8b417f2c
PH
1754PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1755 files or directories, for OpenSSL.
1756
901f42cb
PH
1757PH/19 When an Exim process that is running as root has to create an Exim log
1758 file, it does so in a subprocess that runs as exim:exim so as to get the
1759 ownership right at creation (otherwise, other Exim processes might see
1760 the file with the wrong ownership). There was no test for failure of this
1761 fork() call, which would lead to the process getting stuck as it waited
1762 for a non-existent subprocess. Forks do occasionally fail when resources
1763 run out. I reviewed all the other calls to fork(); they all seem to check
1764 for failure.
1765
f9b9210e
PH
1766PH/20 When checking for unexpected SMTP input at connect time (before writing
1767 the banner), Exim was not dealing correctly with a non-positive return
1768 from the read() function. If the client had disconnected by this time,
1769 the result was a log entry for a synchronization error with an empty
1770 string after "input=" when read() returned zero. If read() returned -1
1771 (an event I could not check), uninitialized data bytes were printed.
1772 There were reports of junk text (parts of files, etc) appearing after
1773 "input=".
1774
54cdb463
PH
1775PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1776
cf00dad6
PH
1777PH/22 Added support for macro redefinition, and (re)definition in between
1778 driver and ACL definitions.
1779
acb1b346
PH
1780PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1781 forgetting to use the resulting value; it was using the unexpanded value.
1782
c5ddb310
PH
1783PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1784 hadn't been configured. The fix is from Juergen Kreileder, who
1785 understands it better than I do:
1786
1787 "Here's what I see happening with three configured cyrus_sasl
1788 authenticators configured (plain, login, cram-md5):
1789
1790 On startup auth_cyrus_sasl_init() gets called for each of these.
1791 This means three calls to sasl_listmech() without a specified mech_list.
1792 => SASL tests which mechs of all available mechs actually work
1793 => three warnings about OTP not working
1794 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1795
1796 With the patch, sasl_listmech() also gets called three times. But now
1797 SASL's mech_list option is set to the server_mech specified in the the
1798 authenticator. Or in other words, the answer from sasl_listmech()
1799 gets limited to just the mech you're testing for (which is different
1800 for each call.)
1801 => the return list contains just 'plain' or 'login', 'cram-md5' or
1802 nothing depending on the value of ob->server_mech.
1803
1804 I've just tested the patch: Authentication still works fine,
1805 unavailable mechs specified in the exim configuration are still
1806 caught, and the auth.log warnings about OTP are gone."
1807
31619da6
PH
1808PH/25 When debugging is enabled, the contents of the command line are added
1809 to the debugging output, even when log_selector=+arguments is not
1810 specified.
1811
bebaf0fc
PH
1812PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1813 answer is "GNU", and only if the return is "GNU/something" is the answer
1814 "Linux".
1815
475fe28a
PH
1816PH/27 $acl_verify_message is now set immediately after the failure of a
1817 verification in an ACL, and so is available in subsequent modifiers. In
1818 particular, the message can be preserved by coding like this:
1819
1820 warn !verify = sender
1821 set acl_m0 = $acl_verify_message
1822
1823 Previously, $acl_verify_message was set only while expanding "message"
1824 and "log_message" when a very denied access.
1825
7e8bec7a
PH
1826PH/28 Modified OS/os.c-Linux with
1827
1828 -#ifndef OS_LOAD_AVERAGE
1829 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1830
1831 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1832 nomenclature these days.)
1833
e4a89c47
PH
1834PH/29 Installed patch from the Sieve maintainer that adds the options
1835 sieve_useraddress and sieve_subaddress to the redirect router.
1836
5ca2a9a1
PH
1837PH/30 In these circumstances:
1838 . Two addresses routed to the same list of hosts;
1839 . First host does not offer TLS;
1840 . First host accepts first address;
1841 . First host gives temporary error to second address;
1842 . Second host offers TLS and a TLS session is established;
1843 . Second host accepts second address.
1844 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1845 and peerdn, if requested) that were in fact used only for the second
1846 address.
7e8bec7a 1847
c688b954
PH
1848PH/31 When doing a callout as part of verifying an address, Exim was not paying
1849 attention to any local part prefix or suffix that was matched by the
1850 router that accepted the address. It now behaves in the same way as it
1851 does for delivery: the affixes are removed from the local part unless
1852 rcpt_include_affixes is set on the transport.
1853
fed77020
PH
1854PH/32 Add the sender address, as F=<...>, to the log line when logging a
1855 timeout during the DATA phase of an incoming message.
1856
7fe1560f
PH
1857PH/33 Sieve envelope tests were broken for match types other than :is. I have
1858 applied a patch sanctioned by the Sieve maintainer.
c688b954 1859
ebb6e6d5
PH
1860PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1861 the uid or gid is negative. A case of a negative gid caused this to be
1862 noticed. The fix allows for either to be negative.
1863
9c4e8f60
PH
1864PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1865 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1866 overlooked.
1867
1868PH/36 The change PH/12 above was broken. Fixed it.
1869
d7174846
PH
1870PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1871 the grounds that routing the same address twice would always produce the
1872 same answer. This might have been true once, but it is certainly no
1873 longer true now. Routing a child address may depend on the previous
1874 routing that produced that child. Some complicated redirection strategies
1875 went wrong when messages had multiple recipients, and made Exim's
1876 behaviour dependent on the order in which the addresses were given.
1877
1878 I have moved the duplicate checking until after the routing is complete.
1879 Exim scans the addresses that are assigned to local and remote
1880 transports, and removes any duplicates. This means that more work will be
1881 done, as duplicates will always all be routed, but duplicates are
1882 presumably rare, so I don't expect this is of any significance.
1883
1884 For deliveries to pipes, files, and autoreplies, the duplicate checking
1885 still happens during the routing process, since they are not going to be
1886 routed further.
1887
cfe75fc3
PH
1888PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1889 It corrects a timeout issue with spamd. This is Ian's comment: "The
1890 background is that sometimes spamd either never reads data from a
1891 connection it has accepted, or it never writes response data. The exiscan
1892 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1893 blindly assumes that writes won't block so it may never time out."
1894
be22d70e
PH
1895PH/39 Allow G after quota size as well as K and M.
1896
0612b098
PH
1897PH/40 The value set for $authenticated_id in an authenticator may not contain
1898 binary zeroes or newlines because the value is written to log lines and
1899 to spool files. There was no check on this. Now the value is run through
1900 the string_printing() function so that such characters are converted to
1901 printable escape sequences.
1902
2e0c1448
PH
1903PH/41 $message_linecount is a new variable that contains the total number of
1904 lines in the message. Compare $body_linecount, which is the count for the
1905 body only.
1906
447d236c
PH
1907PH/42 Exim no longer gives details of delivery errors for specific addresses in
1908 bounce and delay warning messages, except in certain special cases, which
1909 are as follows:
1910
1911 (a) An SMTP error message from a remote host;
1912 (b) A message specified in a :fail: redirection;
1913 (c) A message specified in a "fail" command in a system filter;
1914 (d) A message specified in a FAIL return from the queryprogram router;
1915 (e) A message specified by the cannot_route_message router option.
1916
1917 In these cases only, Exim does include the error details in bounce and
1918 warning messages. There are also a few cases where bland messages such
1919 as "unrouteable address" or "local delivery error" are given.
1920
d20976dc
PH
1921PH/43 $value is now also set for the "else" part of a ${run expansion.
1922
f656d135
PH
1923PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1924 being worked on, but at least Exim now implements the latest version to
1925 play with."
1926
2e2a30b4
PH
1927PH/45 In a pipe transport, although a timeout while waiting for the pipe
1928 process to complete was treated as a delivery failure, a timeout while
1929 writing the message to the pipe was logged, but erroneously treated as a
1930 successful delivery. Such timeouts include transport filter timeouts. For
1931 consistency with the overall process timeout, these timeouts are now
1932 treated as errors, giving rise to delivery failures by default. However,
1933 there is now a new Boolean option for the pipe transport called
1934 timeout_defer, which, if set TRUE, converts the failures into defers for
1935 both kinds of timeout. A transport filter timeout is now identified in
1936 the log output.
1937
9176e9f0
PH
1938PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1939 systems where "make" and "gmake" are different, calling "gmake" at top
1940 level broke things. I've arranged for the value of $(MAKE) to be passed
1941 from the Makefile to this script so that it can call the same version of
1942 "make".
1943
7982096b 1944
bbe902f0
PH
1945A note about Exim versions 4.44 and 4.50
1946----------------------------------------
1947
1948Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1949changes of various kinds. As a consequence, a big documentation update was
1950needed. This delayed the release for rather longer than seemed good, especially
1951in the light of a couple of (minor) security issues. Therefore, the changes
1952that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1953release. So 4.44 and 4.50 are in effect two different branches that both start
1954from 4.43.
1955
1956I have left the 4.50 change log unchanged; it contains all the changes since
19574.43. The change log for 4.44 is below; many of its items are identical to
1958those for 4.50. This seems to be the most sensible way to preserve the
1959historical information.
1960
1961
f7b63901 1962Exim version 4.50
495ae4b0
PH
1963-----------------
1964
5fe762f6
PH
1965 1. Minor wording change to the doc/README.SIEVE file.
1966
139059f6 1967 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1968 computation of the current number of files was incorrect.
495ae4b0 1969
7086e875
PH
1970 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1971 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1972 place.
1973
35af9f61
PH
1974 4. Give more explanation in the error message when the command for a transport
1975 filter fails to execute.
1976
b668c215
PH
1977 5. There are several places where Exim runs a non-Exim command in a
1978 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1979 was being done only for the command run by the queryprogram router. It is
1980 now done for all such subprocesses. The other cases are: ${run, transport
1981 filters, and the commands run by the lmtp and pipe transports.
1982
a494b1e1
PH
1983 6. Added CONFIGURE_GROUP build-time option.
1984
1985 7. Some older OS have a limit of 256 on the maximum number of file
1986 descriptors. Exim was using setrlimit() to set 1000 as a large value
1987 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1988 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1989
c5fcb476
PH
1990 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1991 was an oversight, and furthermore, ever since the addition of extra
1992 controls (e.g. 4.43/32), the checks on when to allow different forms of
1993 "control" were broken. There should now be diagnostics for all cases when a
1994 control that does not make sense is encountered.
1995
69358f02
PH
1996 9. Added the /retain_sender option to "control=submission".
1997
5be20824
PH
199810. $recipients is now available in the predata ACL (oversight).
1999
eb2c0248
PH
200011. Tidy the search cache before the fork to do a delivery from a message
2001 received from the command line. Otherwise the child will trigger a lookup
2002 failure and thereby defer the delivery if it tries to use (for example) a
2003 cached ldap connection that the parent has called unbind on.
2004
2a3eea10
PH
200512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2006 of $address_data from the recipient verification was clobbered by the
2007 sender verification.
2008
200913. The value of address_data from a sender verification is now available in
2010 $sender_address_data in subsequent conditions in the ACL statement.
2011
23c7ff99
PH
201214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2013
4deaf07d
PH
201415. Added a new option "connect=<time>" to callout options, to set a different
2015 connection timeout.
2016
926e1192
PH
201716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2018 was its contents. (It was OK if the option was not defined at all.)
2019
650edc6f
PH
202017. A "Completed" log line is now written for messages that are removed from
2021 the spool by the -Mrm option.
2022
2c7db3f5
PH
202318. New variables $sender_verify_failure and $recipient_verify_failure contain
2024 information about exactly what failed.
2025
3d235903
PH
202619. Added -dd to debug only the daemon process.
2027
7c7ad977
PH
202820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2029 handles timeouts, both on the server side and network timeouts. Renamed the
2030 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2031
981756db
PH
203221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2033 It is now set to "smtps".
2034
d4eb88df
PH
203522. $host_address is now set to the target address during the checking of
2036 ignore_target_hosts.
2037
203823. When checking ignore_target_hosts for an ipliteral router, no host name was
2039 being passed; this would have caused $sender_host_name to have been used if
2040 matching the list had actually called for a host name (not very likely,
2041 since this list is usually IP addresses). A host name is now passed as
2042 "[x.x.x.x]".
2043
7d468ab8
PH
204424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2045 code that specifies a non-restarting handler (typically sigaction() in
2046 modern systems) in an attempt to fix a rare and obscure crash bug.
2047
204825. Narrowed the window for a race in the daemon that could cause it to ignore
2049 SIGCHLD signals. This is not a major problem, because they are used only to
2050 wake it up if nothing else does.
2051
62c0818f
PH
205226. A malformed maildirsize file could cause Exim to calculate negative values
2053 for the mailbox size or file count. Odd effects could occur as a result.
2054 The maildirsize information is now recalculated if the size or filecount
2055 end up negative.
2056
26034054
PH
205727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2058 support for a long time. Removed HAVE_SYS_VFS_H.
2059
af66f652
PH
206028. Installed the latest version of exipick from John Jetmore.
2061
90af77f4
PH
206229. In an address list, if the pattern was not a regular expression, an empty
2063 subject address (from a bounce message) matched only if the pattern was an
2064 empty string. Non-empty patterns were not even tested. This was the wrong
2065 because it is perfectly reasonable to use an empty address as part of a
2066 database query. An empty address is now tested by patterns that are
2067 lookups. However, all the other forms of pattern expect the subject to
2068 contain a local part and a domain, and therefore, for them, an empty
2069 address still always fails if the pattern is not itself empty.
2070
d8ef3577
PH
207130. Exim went into a mad DNS loop when attempting to do a callout where the
2072 host was specified on an smtp transport, and looking it up yielded more
2073 than one IP address.
2074
5cb8cbc6
PH
207531. Re-factored the code for checking spool and log partition space into a
2076 function that finds that data and another that does the check. The former
2077 is then used to implement four new variables: $spool_space, $log_space,
2078 $spool_inodes, and $log_inodes.
2079
14702f5b
PH
208032. The RFC2047 encoding function was originally intended for short strings
2081 such as real names; it was not keeping to the 75-character limit for
2082 encoded words that the RFC imposes. It now respects the limit, and
2083 generates multiple encoded words if necessary. To be on the safe side, I
2084 have increased the buffer size for the ${rfc2047: expansion operator from
2085 1024 to 2048 bytes.
2086
063b1e99
PH
208733. It is now permitted to omit both strings after an "if" condition; if the
2088 condition is true, the result is "true". As before, when the second string
2089 is omitted, a false condition yields an empty string. This makes it less
2090 cumbersome to write custom ACL and router conditions.
2091
652e1b65
PH
209234. Failure to deliver a bounce message always caused it to be frozen, even if
2093 there was an errors_to setting on the router. The errors_to setting is now
2094 respected.
2095
6f0c9a4f
PH
209635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2097 canonical form (fully expanded) before being placed in
2098 $sender_host_address.
2099
33397d19
PH
210036. The table in the code that translates DNS record types into text (T_A to
2101 "A" for instance) was missing entries for NS and CNAME. It is just possible
2102 that this could have caused confusion if both these types were looked up
2103 for the same domain, because the text type is used as part of Exim's
2104 per-process caching. But the chance of anyone hitting this buglet seems
2105 very small.
2106
7bb56e1f
PH
210737. The dnsdb lookup has been extended in a number of ways.
2108
2109 (1) There is a new type, "zns", which walks up the domain tree until it
2110 finds some nameserver records. It should be used with care.
2111
ea3bc19b
PH
2112 (2) There is a new type, "mxh", which is like "mx" except that it returns
2113 just the host names, not the priorities.
2114
2115 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2116 looked up. The behaviour when one of the lookups defers can be
2117 controlled by a keyword.
7bb56e1f 2118
ea3bc19b 2119 (4) It is now possible to specify the separator character for use when
7bb56e1f 2120 multiple records are returned.
33397d19 2121
0bcb2a0e
PH
212238. The dnslists ACL condition has been extended: it is now possible to supply
2123 a list of IP addresses and/or domains to be looked up in a particular DNS
2124 domain.
2125
2ac0e484
PH
212639. Added log_selector=+queue_time_overall.
2127
4e1fde53
PH
212840. When running the queue in the test harness, wait just a tad after forking a
2129 delivery process, to get repeatability of debugging output.
2130
de365ded
PH
213141. Include certificate and key file names in error message when GnuTLS fails
2132 to set them up, because the GnuTLS error message doesn't include the name
2133 of the failing file when there is a problem reading it.
2134
f05da2e8
PH
213542. Allow both -bf and -bF in the same test run.
2136
d6453af2
PH
213743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2138
f7b63901
PH
213944. The "Exiscan patch" is now merged into the mainline Exim source.
2140
214145. Sometimes the final signoff response after QUIT could fail to get
2142 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2143 < 0 before doing a fflush(). This bug looks as though it goes back to the
2144 introduction of TLS in release 3.20, but "sometimes" must have been rare
2145 because the tests only now provoked it.
2146
a444213a
PH
214746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2148 (this can affect the format of dates).
2149
0ec020ea
PH
215047. exim_tidydb, when checking for the continued existence of a message for
2151 which it has found a message-specific retry record, was not finding
2152 messages that were in split spool directories. Consequently, it was
2153 deleting retry records that should have stayed in existence.
2154
b1206957
PH
215548. Steve fixed some bugs in eximstats.
2156
215749. The SPA authentication driver was not abandoning authentication and moving
2158 on to the next authenticator when an expansion was forced to fail,
2159 contradicting the general specification for all authenticators. Instead it
2160 was generating a temporary error. It now behaves as specified.
2161
26dd5a95
PH
216250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2163 (the order specifies the preference for clients). The order is now AES256,
2164 AES128, 3DES, ARCFOUR128.
2165
343b2385
PH
216651. Small patch to Sieve code - explicitly set From: when generating an
2167 autoreply.
2168
1c5466b9
PH
216952. Exim crashed if a remote delivery caused a very long error message to be
2170 recorded - for instance if somebody sent an entire SpamAssassin report back
2171 as a large number of 550 error lines. This bug was coincidentally fixed by
2172 increasing the size of one of Exim's internal buffers (big_buffer) that
2173 happened as part of the Exiscan merge. However, to be on the safe side, I
2174 have made the code more robust (and fixed the comments that describe what
2175 is going on).
2176
55ee9ee3
PH
217753. Now that there can be additional text after "Completed" in log lines (if
2178 the queue_time_overall log selector is set), a one-byte patch to exigrep
2179 was needed to allow it to recognize "Completed" as not the last thing in
2180 the line.
2181
d38f8232
PH
218254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2183 patch that reportedly fixes this has been added. I am not expert enough to
2184 create a test for it. This is what the patch creator wrote:
2185
2186 "I found a little strange behaviour of ldap code when working with
2187 Windows 2003 AD Domain, where users was placed in more than one
2188 Organization Units. When I tried to give exim partial DN, the exit code
2189 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2190 But simultaneously result of request was absolutely normal ldap result,
2191 so I produce this patch..."
2192
3295e65b
PH
2193 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2194 REFERENCE, so I have modified the code to exclude the patch when that macro
2195 is not defined.
2196
7102e136
PH
219755. Some experimental protocols are using DNS PTR records for new purposes. The
2198 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2199 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2200 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2201 CAN-2005-0021
7102e136 2202
3ca0ba97
PH
220356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2204
c2bcbe20
PH
220557. Double the size of the debug message buffer (to 2048) so that more of very
2206 long debug lines gets shown.
2207
18ce445d
PH
220858. The exicyclog utility now does better if the number of log files to keep
2209 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2210
1f5b4c3d
PH
221159. Two changes related to the smtp_active_hostname option:
2212
2213 (1) $smtp_active_hostname is now available as a variable.
2214 (2) The default for smtp_banner uses $smtp_active_hostname instead
2215 of $primary_hostname.
2216
b975ba52
PH
221760. The host_aton() function is supposed to be passed a string that is known
2218 to be a valid IP address. However, in the case of IPv6 addresses, it was
2219 not checking this. This is a hostage to fortune. Exim now panics and dies
2220 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2221 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2222 components; fortuitously, this particular loophole had already been fixed
2223 by change 4.50/55 above.
2224
2225 If there are any other similar loopholes, the new check in host_aton()
2226 itself should stop them being exploited. The report I received stated that
2227 data on the command line could provoke the exploit when Exim was running as
2228 exim, but did not say which command line option was involved. All I could
2229 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2230 running as the user.
ea3a6f44 2231 CAN-2005-0021
85b87bc2
PH
2232
223361. There was a buffer overflow vulnerability in the SPA authentication code
2234 (which came originally from the Samba project). I have added a test to the
2235 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2236 CAN-2005-0022
b975ba52 2237
17ffcae7
PH
223862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2239 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2240
d95f9fdb
PH
224163. The daemon start-up calls getloadavg() while still root for those OS that
2242 need the first call to be done as root, but it missed one case: when
2243 deliver_queue_load_max is set with deliver_drop_privilege. This is
2244 necessary for the benefit of the queue runner, because there is no re-exec
2245 when deliver_drop_privilege is set.
2246
86b8287f
PH
224764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2248 This has been fixed.
2249
60dc5e56
PH
225065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2251 was in use, was not putting the data itself into the right store pool;
2252 consequently, it could be overwritten for a subsequent message in the same
2253 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2254 the caching.)
2255
533244af
PH
225666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2257
a5a28604
PH
225867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2259 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2260 the function were treating the return as a boolean value, which happened to
2261 work because 0=false and not-0=true, but is not correct code.
2262
7e634d24
PH
226368. The host_aton() function was not handling scoped IPv6 addresses (those
2264 with, for example, "%eth0" on the end) correctly.
2265
3e11c26b
PH
226669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2267 negated items (that is, ~something) in unsigned ints. Some compilers
2268 apparently mutter when there is no cast.
2269
6729cf78
PH
227070. If an address verification called from an ACL failed, and did not produce a
2271 user-specific message (i.e. there was only a "system" message), nothing was
2272 put in $acl_verify_message. In this situation, it now puts the system
2273 message there.
2274
00f00ca5
PH
227571. Change 4.23/11 added synchronization checking at the start of an SMTP
2276 session; change 4.31/43 added the unwanted input to the log line - except
2277 that it did not do this in the start of session case. It now does.
2278
c9bdd01c
PH
227972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2280 This is wrong and can cause the other end to generate a synchronization
2281 error if it is another Exim or anything else that does the synchronization
2282 check. A QUIT command is no longer sent after a timeout.
2283
d43194df
PH
228473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2285 during host lookups.
2286
fe5b5d0b
PH
228774. The defer_ok option of callout verification was not working if it was used
2288 when verifying addresses in header lines, that is, for this case:
2289
2290 verify = header_sender/callout=defer_ok
2291
76a2d7ba
PH
229275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2293 those file descriptors could be used for SMTP connections. If anything
2294 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2295 could be sent to the SMTP client, causing chaos. The daemon now opens
2296 stdin, stdout, and stderr to /dev/null when it puts itself into the
2297 background.
2298
229976. Arrange for output from Perl's "warn" command to be written to Exim's main
2300 log by default. The user can override this with suitable Perl magic.
2301
04f7d5b9
PH
230277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2303 the log message when discard triggers, was not working for the DATA ACL or
2304 for the non-SMTP ACL.
2305
bc60667e
PH
230678. Error message wording change in sieve.c.
2307
bb6e88ff
PH
230879. If smtp_accept_max_per_host was set, the number of connections could be
2309 restricted to fewer than expected, because the daemon was trying to set up
2310 a new connection before checking whether the processes handling previous
2311 connections had finished. The check for completed processes is now done
2312 earlier. On busy systems, this bug wouldn't be noticed because something
2313 else would have woken the daemon, and it would have reaped the completed
2314 process earlier.
2315
1e70f85b
PH
231680. If a message was submitted locally by a user whose login name contained one
2317 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2318 It caused a spool format error. I have fixed the spool reading code. A
2319 related problem was that the "from" clause in the Received: line became
2320 illegal because of the space(s). It is now covered by ${quote_local_part.
2321
232281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2323 tables).
2324
4e01f9d6
PH
232582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2326
1ee1cef2
PH
232783. Patch from Sieve maintainer to fix unterminated string problem in
2328 "vacation" handling.
2329
6e2b4ccc
PH
233084. Some minor changes to the Linux configuration files to help with other
2331 OS variants using glibc.
2332
8e669ac1
PH
233385. One more patch for Sieve to update vacation handling to latest spec.
2334
495ae4b0 2335
bbe902f0
PH
2336----------------------------------------------------
2337See the note above about the 4.44 and 4.50 releases.
2338----------------------------------------------------
2339
2340
2341Exim version 4.44
2342-----------------
2343
2344 1. Change 4.43/35 introduced a bug that caused file counts to be
2345 incorrectly computed when quota_filecount was set in an appendfile
2346 transport
2347
2348 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2349 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2350 place.
2351
2352 3. Give more explanation in the error message when the command for a transport
2353 filter fails to execute.
2354
2355 4. There are several places where Exim runs a non-Exim command in a
2356 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2357 was being done only for the command run by the queryprogram router. It is
2358 now done for all such subprocesses. The other cases are: ${run, transport
2359 filters, and the commands run by the lmtp and pipe transports.
2360
2361 5. Some older OS have a limit of 256 on the maximum number of file
2362 descriptors. Exim was using setrlimit() to set 1000 as a large value
2363 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2364 systems. I've change it so that if it can't get 1000, it tries for 256.
2365
2366 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2367 was an oversight, and furthermore, ever since the addition of extra
2368 controls (e.g. 4.43/32), the checks on when to allow different forms of
2369 "control" were broken. There should now be diagnostics for all cases when a
2370 control that does not make sense is encountered.
2371
2372 7. $recipients is now available in the predata ACL (oversight).
2373
2374 8. Tidy the search cache before the fork to do a delivery from a message
2375 received from the command line. Otherwise the child will trigger a lookup
2376 failure and thereby defer the delivery if it tries to use (for example) a
2377 cached ldap connection that the parent has called unbind on.
2378
2379 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2380 of $address_data from the recipient verification was clobbered by the
2381 sender verification.
2382
238310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2384 was its contents. (It was OK if the option was not defined at all.)
2385
238611. A "Completed" log line is now written for messages that are removed from
2387 the spool by the -Mrm option.
2388
238912. $host_address is now set to the target address during the checking of
2390 ignore_target_hosts.
2391
239213. When checking ignore_target_hosts for an ipliteral router, no host name was
2393 being passed; this would have caused $sender_host_name to have been used if
2394 matching the list had actually called for a host name (not very likely,
2395 since this list is usually IP addresses). A host name is now passed as
2396 "[x.x.x.x]".
2397
239814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2399 code that specifies a non-restarting handler (typically sigaction() in
2400 modern systems) in an attempt to fix a rare and obscure crash bug.
2401
240215. Narrowed the window for a race in the daemon that could cause it to ignore
2403 SIGCHLD signals. This is not a major problem, because they are used only to
2404 wake it up if nothing else does.
2405
240616. A malformed maildirsize file could cause Exim to calculate negative values
2407 for the mailbox size or file count. Odd effects could occur as a result.
2408 The maildirsize information is now recalculated if the size or filecount
2409 end up negative.
2410
241117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2412 support for a long time. Removed HAVE_SYS_VFS_H.
2413
ea3a6f44 241418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2415
241619. Allow an empty sender to be matched against a lookup in an address list.
2417 Previously the only cases considered were a regular expression, or an
2418 empty pattern.
2419
242020. Exim went into a mad DNS lookup loop when doing a callout where the
2421 host was specified on the transport, if the DNS lookup yielded more than
2422 one IP address.
2423
ea3a6f44
NM
242421. The RFC2047 encoding function was originally intended for short strings
2425 such as real names; it was not keeping to the 75-character limit for
2426 encoded words that the RFC imposes. It now respects the limit, and
2427 generates multiple encoded words if necessary. To be on the safe side, I
2428 have increased the buffer size for the ${rfc2047: expansion operator from
2429 1024 to 2048 bytes.
bbe902f0 2430
ea3a6f44
NM
243122. Failure to deliver a bounce message always caused it to be frozen, even if
2432 there was an errors_to setting on the router. The errors_to setting is now
2433 respected.
bbe902f0
PH
2434
243523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2436 canonical form (fully expanded) before being placed in
2437 $sender_host_address.
2438
243924. Updated eximstats to version 1.33
2440
ea3a6f44
NM
244125. Include certificate and key file names in error message when GnuTLS fails
2442 to set them up, because the GnuTLS error message doesn't include the name
2443 of the failing file when there is a problem reading it.
bbe902f0
PH
2444
244526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2446 As per change 25.
bbe902f0 2447
ea3a6f44
NM
244827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2449 (this can affect the format of dates).
bbe902f0 2450
ea3a6f44
NM
245128. exim_tidydb, when checking for the continued existence of a message for
2452 which it has found a message-specific retry record, was not finding
2453 messages that were in split spool directories. Consequently, it was
2454 deleting retry records that should have stayed in existence.
bbe902f0
PH
2455
245629. eximstats updated to version 1.35
2457 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2458 1.35 - bugfix such that pie charts by volume are generated correctly
2459
ea3a6f44
NM
246030. The SPA authentication driver was not abandoning authentication and moving
2461 on to the next authenticator when an expansion was forced to fail,
2462 contradicting the general specification for all authenticators. Instead it
2463 was generating a temporary error. It now behaves as specified.
bbe902f0 2464
ea3a6f44
NM
246531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2466 (the order specifies the preference for clients). The order is now AES256,
2467 AES128, 3DES, ARCFOUR128.
bbe902f0 2468
ea3a6f44
NM
246931. Small patch to Sieve code - explicitly set From: when generating an
2470 autoreply.
bbe902f0 2471
ea3a6f44
NM
247232. Exim crashed if a remote delivery caused a very long error message to be
2473 recorded - for instance if somebody sent an entire SpamAssassin report back
2474 as a large number of 550 error lines. This bug was coincidentally fixed by
2475 increasing the size of one of Exim's internal buffers (big_buffer) that
2476 happened as part of the Exiscan merge. However, to be on the safe side, I
2477 have made the code more robust (and fixed the comments that describe what
2478 is going on).
bbe902f0 2479
ea3a6f44
NM
248033. Some experimental protocols are using DNS PTR records for new purposes. The
2481 keys for these records are domain names, not reversed IP addresses. The
2482 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2483 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2484 CAN-2005-0021
2485
ea3a6f44
NM
248634. The host_aton() function is supposed to be passed a string that is known
2487 to be a valid IP address. However, in the case of IPv6 addresses, it was
2488 not checking this. This is a hostage to fortune. Exim now panics and dies
2489 if the condition is not met. A case was found where this could be provoked
2490 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2491 components; fortuitously, this particular loophole had already been fixed
2492 by change 4.50/55 or 4.44/33 above.
2493
2494 If there are any other similar loopholes, the new check in host_aton()
2495 itself should stop them being exploited. The report I received stated that
2496 data on the command line could provoke the exploit when Exim was running as
2497 exim, but did not say which command line option was involved. All I could
2498 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2499 running as the user.
bbe902f0
PH
2500 CAN-2005-0021
2501
ea3a6f44
NM
250235. There was a buffer overflow vulnerability in the SPA authentication code
2503 (which came originally from the Samba project). I have added a test to the
2504 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2505 CAN-2005-0022
2506
ea3a6f44
NM
250736. The daemon start-up calls getloadavg() while still root for those OS that
2508 need the first call to be done as root, but it missed one case: when
2509 deliver_queue_load_max is set with deliver_drop_privilege. This is
2510 necessary for the benefit of the queue runner, because there is no re-exec
2511 when deliver_drop_privilege is set.
bbe902f0 2512
ea3a6f44
NM
251337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2514 was in use, was not putting the data itself into the right store pool;
2515 consequently, it could be overwritten for a subsequent message in the same
2516 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2517 the caching.)
bbe902f0 2518
ea3a6f44
NM
251938. Sometimes the final signoff response after QUIT could fail to get
2520 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2521 < 0 before doing a fflush(). This bug looks as though it goes back to the
2522 introduction of TLS in release 3.20, but "sometimes" must have been rare
2523 because the tests only now provoked it.
bbe902f0
PH
2524
2525
495ae4b0
PH
2526Exim version 4.43
2527-----------------
2528
2529 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2530 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2531 Now it returns an integer. A number of calls were still expecting a T/F
2532 return. Fortuitously, in all cases, the tests worked in OK situations,
2533 which is the norm. However, things would have gone wrong on any write
2534 failures on the smtp file descriptor. This function is used when sending
2535 messages over SMTP and also when doing verify callouts.
2536
2537 2. When Exim is called to do synchronous delivery of a locally submitted
2538 message (the -odf or -odi options), it no longer closes stderr before doing
2539 the delivery.
2540
2541 3. Implemented the mua_wrapper option.
2542
2543 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2544
2545 5. Implemented the functions header_remove(), header_testname(),
2546 header_add_at_position(), and receive_remove_recipient(), and exported them
2547 to local_scan().
2548
2549 6. If an ACL "warn" statement specified the addition of headers, Exim already
2550 inserted X-ACL-Warn: at the start if there was no header name. However, it
2551 was not making this test for the second and subsequent header lines if
2552 there were newlines in the string. This meant that an invalid header could
2553 be inserted if Exim was badly configured.
2554
2555 7. Allow an ACL "warn" statement to add header lines at the start or after all
2556 the Received: headers, as well as at the end.
2557
2558 8. Added the rcpt_4xx retry error code.
2559
2560 9. Added postmaster_mailfrom=xxx to callout verification option.
2561
256210. Added mailfrom=xxxx to the callout verification option, for verify=
2563 header_sender only.
2564
256511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2566 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2567
256812. Inserted some casts to stop certain compilers warning when using pointer
2569 differences as field lengths or precisions in printf-type calls (mostly
2570 affecting debugging statements).
2571
257213. Added optional readline() support for -be (dynamically loaded).
2573
257414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2575 same clock tick as a message's arrival, so that its received time was the
2576 same as the "first fail" time on the retry record, and that message
2577 remained on the queue past the ultimate address timeout, every queue runner
2578 would try a delivery (because it was past the ultimate address timeout) but
2579 after another failure, the ultimate address timeout, which should have then
2580 bounced the address, did not kick in. This was a "< instead of <=" error;
2581 in most cases the first failure would have been in the next clock tick
2582 after the received time, and all would be well.
2583
258415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2585 being recognized when the domain list was tested by the match_domain
2586 condition in an expansion string.
2587
258816. Added the ${str2b64: operator.
2589
259017. Exim was always calling setrlimit() to set a large limit for the number of
2591 processes, without checking whether the existing limit was already
2592 adequate. (It did check for the limit on file descriptors.) Furthermore,
2593 errors from getrlimit() and setrlimit() were being ignored. Now they are
2594 logged to the main and panic logs, but Exim does carry on, to try to do its
2595 job under whatever limits there are.
2596
259718. Imported PCRE 5.0.
2598
259919. Trivial typo in log message " temporarily refused connection" (the leading
2600 space).
2601
260220. If the log selector return_path_on_delivery was set and an address was
2603 redirected to /dev/null, the delivery process crashed because it assumed
2604 that a return path would always be set for a "successful" delivery. In this
2605 case, the whole delivery is bypassed as an optimization, and therefore no
2606 return path is set.
2607
260821. Internal re-arrangement: the function for sending a challenge and reading
2609 a response while authentication was assuming a zero-terminated challenge
2610 string. It's now changed to take a pointer and a length, to allow for
2611 binary data in such strings.
2612
261322. Added the cyrus_sasl authenticator (code supplied by MBM).
2614
261523. Exim was not respecting finduser_retries when seeking the login of the
2616 uid under which it was called; it was always trying 10 times. (The default
2617 setting of finduser_retries is zero.) Also, it was sleeping after the final
2618 failure, which is pointless.
2619
262024. Implemented tls_on_connect_ports.
2621
262225. Implemented acl_smtp_predata.
2623
262426. If the domain in control=submission is set empty, Exim assumes that the
2625 authenticated id is a complete email address when it generates From: or
2626 Sender: header lines.
2627
262827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2629 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2630 chown and chgrp in /bin and hostname in /usr/bin.
2631
263228. Exim was keeping the "process log" file open after each use, just as it
2633 does for the main log. This opens the possibility of it remaining open for
2634 long periods when the USR1 signal hits a daemon. Occasional processlog
2635 errors were reported, that could have been caused by this. Anyway, it seems
2636 much more sensible not to leave this file open at all, so that is what now
2637 happens.
2638
263929. The long-running daemon process does not normally write to the log once it
2640 has entered its main loop, and it closes the log before doing so. This is
2641 so that log files can straightforwardly be renamed and moved. However,
2642 there are a couple of unusual error situations where the daemon does write
2643 log entries, and I had neglected to close the log afterwards.
2644
264530. The text of an SMTP error response that was received during a remote
2646 delivery was being truncated at 512 bytes. This is too short for some of
2647 the long messages that one sometimes sees. I've increased the limit to
2648 1024.
2649
265031. It is now possible to make retry rules that apply only when a message has a
2651 specific sender, in particular, an empty sender.
2652
265332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2654 it possible to be selective about when SMTP synchronization is enforced.
2655
265633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2657
265832. Implemented hosts_connection_nolog.
2659
266033. Added an ACL for QUIT.
2661
266234. Setting "delay_warning=" to disable warnings was not working; it gave a
2663 syntax error.
2664
266535. Added mailbox_size and mailbox_filecount to appendfile.
2666
266736. Added control = no_multiline_responses to ACLs.
2668
266937. There was a bug in the logic of the code that waits for the clock to tick
2670 in the case where the clock went backwards by a substantial amount such
2671 that the microsecond fraction of "now" was more than the microsecond
2672 fraction of "then" (but the whole seconds number was less).
2673
267438. Added support for the libradius Radius client library this is found on
2675 FreeBSD (previously only the radiusclient library was supported).
2676
2677
2678Exim version 4.42
2679-----------------
2680
2681 1. When certain lookups returned multiple values in the form name=value, the
2682 quoting of the values was not always being done properly. Specifically:
2683 (a) If the value started with a double quote, but contained no whitespace,
2684 it was not quoted.
2685 (b) If the value contained whitespace other than a space character (i.e.
2686 tabs or newlines or carriage returns) it was not quoted.
2687 This fix has been applied to the mysql and pgsql lookups by writing a
2688 separate quoting function and calling it from the lookup code. The fix
2689 should probably also be applied to nisplus, ibase and oracle lookups, but
2690 since I cannot test any of those, I have not disturbed their existing code.
2691
2692 2. A hit in the callout cache for a specific address caused a log line with no
2693 reason for rejecting RCPT. Now it says "Previous (cached) callout
2694 verification failure".
2695
2696 3. There was an off-by-one bug in the queryprogram router. An over-long
2697 return line was truncated at 256 instead of 255 characters, thereby
2698 overflowing its buffer with the terminating zero. As well as fixing this, I
2699 have increased the buffer size to 1024 (and made a note to document this).
2700
2701 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2702 when Exim is waiting for an SMTP response from a remote server, Exim
2703 restarts its select() call on the socket, thereby resetting its timeout.
2704 This is not a problem when such interrupts are rare. Somebody set up a cron
2705 job to run exiwhat every 2 minutes, which is less than the normal select()
2706 timeout (5 or 10 minutes). This meant that the select() timeout never
2707 kicked in because it was always reset. I have fixed this by comparing the
2708 time when an interrupt arrives with the time at the start of the first call
2709 to select(). If more time than the timeout has elapsed, the interrupt is
2710 treated as a timeout.
2711
2712 5. Some internal re-factoring in preparation for the addition of Sieve
2713 extensions (by MH). In particular, the "personal" test is moved to a
2714 separate function, and given an option for scanning Cc: and Bcc: (which is
2715 not set for Exim filters).
2716
2717 6. When Exim created an email address using the login of the caller as the
2718 local part (e.g. when creating a From: or Sender: header line), it was not
2719 quoting the local part when it contained special characters such as @.
2720
2721 7. Installed new OpenBSD configuration files.
2722
2723 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2724 try to make them clearer.
2725
2726 9. Callout options, other than the timeout value, were being ignored when
2727 verifying sender addresses in header lines. For example, when using
2728
2729 verify = header_sender/callout=no_cache
2730
2731 the cache was (incorrectly) being used.
2732
273310. Added a missing instance of ${EXE} to the exim_install script; this affects
2734 only the Cygwin environment.
2735
273611. When return_path_on_delivery was set as a log selector, if different remote
2737 addresses in the same message used different return paths and parallel
2738 remote delivery occurred, the wrong values would sometimes be logged.
2739 (Whenever a remote delivery process finished, the return path value from
2740 the most recently started remote delivery process was logged.)
2741
274212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2743 lines when AUTH and/or TLS are in use. This is the "received protocol"
2744 field. Exim used to use "asmtp" for authenticated SMTP, without any
2745 indication (in the protocol name) for TLS use. Now it follows the RFC and
2746 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2747 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2748 names appear in log lines as well as in Received: header lines.
2749
275013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2751 extensions, and comparison tests, and to fix some bugs.
2752
275314. Changes to the "personal" filter test:
2754
2755 (1) The test was buggy in that it was just doing the equivalent of
2756 "contains" tests on header lines. For example, if a user's address was
2757 anne@some.where, the "personal" test would incorrectly be true for
2758
2759 To: susanne@some.where
2760
2761 This test is now done by extracting each address from the header in turn,
2762 and checking the entire address. Other tests that are part of "personal"
2763 are now done using regular expressions (for example, to check local parts
2764 of addresses in From: header lines).
2765
2766 (2) The list of non-personal local parts in From: addresses has been
2767 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2768 taken from the Sieve specification recommendations.
2769
2770 (3) If the message contains any header line starting with "List-" it is
2771 treated as non-personal.
2772
2773 (4) The test for "circular" in the Subject: header line has been removed
2774 because it now seems ill-conceived.
2775
277615. Minor typos in src/EDITME comments corrected.
2777
277816. Installed latest exipick from John Jetmore.
2779
278017. If headers_add on a router specified a text string that was too long for
2781 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2782 of string_sprintf() is now avoided.
2783
278418. $message_body_size was not set (it was always zero) when running the DATA
2785 ACL and the local_scan() function.
2786
278719. For the "mail" command in an Exim filter, no default was being set for
2788 the once_repeat time, causing a random time value to be used if "once" was
2789 specified. (If the value happened to be <= 0, no repeat happened.) The
2790 default is now 0s, meaning "never repeat". The "vacation" command was OK
2791 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2792 (I found it when inspecting the code).
2793
279420. There is now an overall timeout for performing a callout verification. It
2795 defaults to 4 times the callout timeout, which applies to individual SMTP
2796 commands during the callout. The overall timeout applies when there is more
2797 than one host that can be tried. The timeout is checked before trying the
2798 next host. This prevents very long delays if there are a large number of
2799 hosts and all are timing out (e.g. when the network connections are timing
2800 out). The value of the overall timeout can be changed by specifying an
2801 additional sub-option for "callout", called "maxwait". For example:
2802
2803 verify = sender/callout=5s,maxwait=20s
2804
280521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2806 to the end before writing, but this should make it even safer).
2807
280822. Exim was forgetting that it had advertised PIPELINING for the second and
2809 subsequent messages on an SMTP connection. It was also not resetting its
2810 memory on STARTTLS and an internal HELO.
2811
281223. When Exim logs an SMTP synchronization error within a session, it now
2813 records whether PIPELINING has been advertised or not.
2814
281524. Added 3 instances of "(long int)" casts to time_t variables that were being
2816 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2817 rather than long int.
2818
281925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2820
282126. Added the never_mail option to autoreply.
2822
2823
2824Exim version 4.41
2825-----------------
2826
2827 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2828 crash if the getsockname() call failed; this can happen if a connection is
2829 closed very soon after it is established. The problem was simply in the
2830 order in which certain operations were done, causing Exim to try to write
2831 to the SMTP stream before it had set up the file descriptor. The bug has
2832 been fixed by making things happen in the correct order.
2833
2834
2835Exim version 4.40
2836-----------------
2837
2838 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2839 before the connection was closed, thus losing the rejection response.
2840
2841 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2842 some early Solaris releases, but causes trouble in current releases where
2843 socklen_t is defined.
2844
2845 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2846 always exist.
2847
2848 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2849 configured.
2850
2851 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2852 that releasing the top of it at the end releases what was used for sub-
2853 expansions (unless the block got too big). However, discard this block if
2854 the first thing is a variable or header, so that we can use its block when
2855 it is dynamic (useful for very large $message_headers, for example).
2856
2857 6. Lookups now cache *every* query, not just the most recent. A new, separate
2858 store pool is used for this. It can be recovered when all lookup caches are
2859 flushed. Lookups now release memory at the end of their result strings.
2860 This has involved some general refactoring of the lookup sources.
2861
2862 7. Some code has been added to the store_xxx() functions to reduce the amount
2863 of flapping under certain conditions.
2864
2865 8. log_incoming_interface used to affect only the <= reception log lines. Now
2866 it causes the local interface and port to be added to several more SMTP log
2867 lines, for example "SMTP connection from", and rejection lines.
2868
2869 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2870
287110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2872
287311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2874 could be overwritten at the end of the current message (or the start of a
2875 new message if it was set in a HELO ACL). The value is now preserved for
2876 the duration of the SMTP connection.
2877
287812. If a transport had a headers_rewrite setting, and a matching header line
2879 contained an unqualified address, that address was qualified, even if it
2880 did not match any rewriting rules. The underlying bug was that the values
2881 of the flags that permit the existence of unqualified sender and recipient
2882 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2883 non-local messages, and by -bnq for local messages) were not being
2884 preserved with the message after it was received.
2885
288613. When Exim was logging an SMTP synchronization error, it could sometimes log
2887 "next input=" as part of the text comprising the host identity instead of
2888 the correct text. The code was using the same buffer for two different
2889 strings. However, depending on which order the printing function evaluated
2890 its arguments, the bug did not always show up. Under Linux, for example, my
2891 test suite worked just fine.
2892
289314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2894 doesn't work with some older versions of Perl. It has been changed to "my",
2895 which in any case is probably the better facility to use.
2896
289715. A really picky compiler found some instances of statements for creating
2898 error messages that either had too many or two few arguments for the format
2899 string.
2900
290116. The size of the buffer for calls to the DNS resolver has been increased
2902 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2903 for addresses that have a lot of PTR records. This alleviates a problem; it
2904 does not fully solve it.
2905
290617. A dnsdb lookup for PTR records that receives more data than will fit in the
2907 buffer now truncates the list and logs the incident, which is the same
2908 action as happens when Exim is looking up a host name and its aliases.
2909 Previously in this situation something unpredictable would happen;
2910 sometimes it was "internal error: store_reset failed".
2911
291218. If a server dropped the connection unexpectedly when an Exim client was
2913 using GnuTLS and trying to read a response, the client delivery process
2914 crashed while trying to generate an error log message.
2915
291619. If a "warn" verb in an ACL added multiple headers to a message in a single
2917 string, for example:
2918
2919 warn message = H1: something\nH2: something
2920
2921 the text was added as a single header line from Exim's point of view
2922 though it ended up OK in the delivered message. However, searching for the
2923 second and subsequent header lines using $h_h2: did not work. This has been
2924 fixed. Similarly, if a system filter added multiple headers in this way,
2925 the routers could not see them.
2926
292720. Expanded the error message when iplsearch is called with an invalid key to
2928 suggest using net-iplsearch in a host list.
2929
293021. When running tests using -bh, any delays imposed by "delay" modifiers in
2931 ACLs are no longer actually imposed (and a message to that effect is
2932 output).
2933
293422. If a "gecos" field in a passwd entry contained escaped characters, in
2935 particular, if it contained a \" sequence, Exim got it wrong when building
2936 a From: or a Sender: header from that name. A second bug also caused
2937 incorrect handling when an unquoted " was present following a character
2938 that needed quoting.
2939
294023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2941 was not being matched caselessly.
2942
294324. Arranged for all hyphens in the exim.8 source to be escaped with
2944 backslashes.
2945
294625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2947 properly. Recipient callout cache records were still being keyed to include
2948 the sender, even when use_sender was set false. This led to far more
2949 callouts that were necessary. The sender is no longer included in the key
2950 when use_sender is false.
2951
295226. Added "control = submission" modifier to ACLs.
2953
295427. Added the ${base62d: operator to decode base 62 numbers.
2955
295628. dnsdb lookups can now access SRV records.
2957
295829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2959 the configuration file.
2960
296130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2962 (-v) mode. This makes the output for a verbose queue run more intelligible.
2963
296431. Added a use_postmaster feature to recipient callouts.
2965
296632. Added the $body_zerocount variable, containing the number of binary zero
2967 bytes in the message body.
2968
296933. The time of last modification of the "new" subdirectory is now used as the
2970 "mailbox time last read" when there is a quota error for a maildir
2971 delivery.
2972
297334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2974
297535. Added +ignore_unknown as a special item in host lists.
2976
297736. Code for decoding IPv6 addresses in host lists is now included, even if
2978 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2979 address was recognized as an IP address, but was then not correctly decoded
2980 into binary, causing unexpected and incorrect effects when compared with
2981 another IP address.
2982
2983
2984Exim version 4.34
2985-----------------
2986
2987 1. Very minor rewording of debugging text in manualroute to say "list of
2988 hosts" instead of "hostlist".
2989
2990 2. If verify=header_syntax was set, and a header line with an unqualified
2991 address (no domain) and a large number of spaces between the end of the
2992 name and the colon was received, the reception process suffered a buffer
2993 overflow, and (when I tested it) crashed. This was caused by some obsolete
2994 code that should have been removed. The fix is to remove it!
2995
2996 3. When running in the test harness, delay a bit after writing a bounce
2997 message to get a bit more predictability in the log output.
2998
2999 4. Added a call to search_tidyup() just before forking a reception process. In
3000 theory, someone could use a lookup in the expansion of smtp_accept_max_
3001 per_host which, without the tidyup, could leave open a database connection.
3002
3003 5. Added the variables $recipient_data and $sender_data which get set from a
3004 lookup success in an ACL "recipients" or "senders" condition, or a router
3005 "senders" option, similar to $domain_data and $local_part_data.
3006
3007 6. Moved the writing of debug_print from before to after the "senders" test
3008 for routers.
3009
3010 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3011 problems for message scanning, either using a data ACL, or using
3012 local_scan() because the Received: header was not generated till after they
3013 were called (in order to set the time as the time of reception completion).
3014 I have revised the way this works. The header is now generated after the
3015 body is received, but before the ACL or local_scan() are called. After they
3016 are run, the timestamp in the header is updated.
3017
3018
3019Exim version 4.33
3020-----------------
3021
3022 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3023 before starting a queue runner without re-exec. This happened only when
3024 deliver_drop_privilege was set or when the Exim user was set to root. The
3025 effect of the bug was that timeouts during subsequent deliveries caused
3026 crashes instead of being properly handled. The handler is now left at its
3027 default (and expected) setting.
3028
3029 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3030 message, again when deliver_drop_privilege is set or Exim is run as root.
3031 The bug described in (1) was not present in this case, but the tidying up
3032 of the other signals was missing. I have made the two cases consistent.
3033
3034 3. The ignore_target_hosts setting on a manualroute router was being ignored
3035 for hosts that were looked up using the /MX notation.
3036
3037 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3038 in domain lists.
3039
3040 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3041 operated on the sender address. After changing the $sender_address to <>
3042 for the sender address verify, Exim was re-instated it as the original
3043 (before rewriting) address, but remembering that it had rewritten it, so it
3044 wasn't rewriting it again. This bug also had the effect of breaking the
3045 sender address verification caching when the sender address was rewritten.
3046
3047 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3048 This has been changed so that if the ip literal address matches
3049 ignore_target_hosts, the router declines.
3050
3051 7. Added expansion conditions match_domain, match_address, and match_local_
3052 part (NOT match_host).
3053
3054 8. The placeholder for the Received: header didn't have a length field set.
3055
3056 9. Added code to Exim itself and to exim_lock to test for a specific race
3057 condition that could lead to file corruption when using MBX delivery. The
3058 issue is with the lockfile that is created in /tmp. If this file is removed
3059 after a process has opened it but before that process has acquired a lock,
3060 there is the potential for a second process to recreate the file and also
3061 acquire a lock. This could lead to two Exim processes writing to the file
3062 at the same time. The added code performs the same test as UW imapd; it
3063 checks after acquiring the lock that its file descriptor still refers to
3064 the same named file.
3065
306610. The buffer for building added header lines was of fixed size, 8192 bytes.
3067 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3068 when Exim is built.
3069
307011. Added the smtp_active_hostname option. If used, this will typically be made
3071 to depend on the incoming interface address. Because $interface_address is
3072 not set up until the daemon has forked a reception process, error responses
3073 that can happen earlier (such as "too many connections") no longer contain
3074 a host name.
3075
307612. If an expansion in a condition on a "warn" statement fails because a lookup
3077 defers, the "warn" statement is abandoned, and the next ACL statement is
3078 processed. Previously this caused the whole ACL to be aborted.
3079
308013. Added the iplsearch lookup type.
3081
308214. Added ident_timeout as a log selector.
3083
308415. Added tls_certificate_verified as a log selector.
3085
308616. Added a global option tls_require_ciphers (compare the smtp transport
3087 option of the same name). This controls incoming TLS connections.
3088
308917. I finally figured out how to make tls_require_ciphers do a similar thing
3090 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3091 before starting the TLS session.
3092
309318. Tabs are now shown as \t in -bP output.
3094
309519. If the log selector return_path_on_delivery was set, Exim crashed when
3096 bouncing a message because it had too many Received: header lines.
3097
309820. If two routers both had headers_remove settings, and the first one included
3099 a superfluous trailing colon, the final name in the first list and the
3100 first name in the second list were incorrectly joined into one item (with a
3101 colon in the middle).
3102
3103
3104Exim version 4.32
3105-----------------
3106
3107 1. Added -C and -D options to the exinext utility, mainly to make it easier
3108 to include in the automated testing, but these could be helpful when
3109 multiple configurations are in use.
3110
3111 2. The exinext utility was not formatting the output nicely when there was
3112 an alternate port involved in the retry record key, nor when there was a
3113 message id as well (for retries that were specific to a specific message
3114 and a specific host). It was also confused by IPv6 addresses, because of
3115 the additional colons they contain. I have fixed the IPv4 problem, and
3116 patched it up to do a reasonable job for IPv6.
3117
3118 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3119 delivery, the log line now contains "pipelined" if PIPELINING was used.
3120
3121 4. An SMTP transport process used to panic and die if the bind() call to set
3122 an explicit outgoing interface failed. This has been changed; it is now
3123 treated in the same way as a connect() failure.
3124
3125 5. A reference to $sender_host_name in the part of a conditional expansion
3126 that was being skipped was still causing a DNS lookup. This no longer
3127 occurs.
3128
3129 6. The def: expansion condition was not recognizing references to header lines
3130 that used bh_ and bheader_.
3131
3132 7. Added the _cache feature to named lists.
3133
3134 8. The code for checking quota_filecount in the appendfile transport was
3135 allowing one more file than it should have been.
3136
3137 9. For compatibility with Sendmail, the command line option
3138
3139 -prval:sval
3140
3141 is equivalent to
3142
3143 -oMr rval -oMs sval
3144
3145 and sets the incoming protocol and host name (for trusted callers). The
3146 host name and its colon can be omitted when only the protocol is to be set.
3147 Note the Exim already has two private options, -pd and -ps, that refer to
3148 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3149 "s", but I don't think that's a major issue.
3150
315110. A number of refactoring changes to the code, none of which should affect
3152 Exim's behaviour:
3153
3154 (a) The number of logging options was getting close to filling up the
3155 32-bit word that was used as a bit map. I have split them into two classes:
3156 those that are passed in the argument to log_write(), and those that are
3157 only ever tested independently outside of that function. These are now in
3158 separate 32-bit words, so there is plenty of room for expansion again.
3159 There is no change in the user interface or the logging behaviour.
3160
3161 (b) When building, for example, log lines, the code previously used a
3162 macro that called string_cat() twice, in order to add two strings. This is
3163 not really sufficiently general. Furthermore, there was one instance where
3164 it was actually wrong because one of the argument was used twice, and in
3165 one call a function was used. (As it happened, calling the function twice
3166 did not affect the overall behaviour.) The macro has been replaced by a
3167 function that can join an arbitrary number of extra strings onto a growing
3168 string.
3169
3170 (c) The code for expansion conditions now uses a table and a binary chop
3171 instead of a serial search (which was left over from when there were very
3172 few conditions). Also, it now recognizes conditions like "pam" even when
3173 the relevant support is not compiled in: a suitably worded error message is
3174 given if an attempt is made to use such a condition.
3175
317611. Added ${time_interval:xxxxx}.
3177
317812. A bug was causing one of the ddress fields not to be passed back correctly
3179 from remote delivery subprocesses. The field in question was not being
3180 subsequently used, so this caused to problems in practice.
3181
318213. Added new log selectors queue_time and deliver_time.
3183
318414. Might have fixed a bug in maildirsizefile handling that threw up
3185 "unexpected character" debug warnings, and recalculated the data
3186 unnecessarily. In any case, I expanded the warning message to give more
3187 information.
3188
318915. Added the message "Restricted characters in address" to the statements in
3190 the default ACL that block characters like @ and % in local parts.
3191
319216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3193 Three changes have been made:
3194
3195 (a) There was a serious bug; a negative response to MAIL caused the whole
3196 recipient domain to be cached as invalid, thereby blocking all messages
3197 to all local parts at the same domain, from all senders. This bug has
3198 been fixed. The domain is no longer cached after a negative response to
3199 MAIL if the sender used is not empty.
3200
3201 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3202 been restored.
3203
3204 (c) A new callout option, "use_sender" has been added for people who want
3205 the modified behaviour.
3206
3207
3208Exim version 4.31
3209-----------------
3210
3211 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3212 Larry Rosenman.
3213
3214 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3215 indeed breaks things for older releases.
3216
3217 3. Added additional logging to the case where there is a problem reading data
3218 from a filter that is running in a subprocess using a pipe, in order to
3219 try to track down a specific problem.
3220
3221 4. Testing facility fudge: when running in the test harness and attempting
3222 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3223 getting "No route to host". Convert this to a timeout.
3224
3225 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3226 warning.
3227
3228 6. Some OS don't have socklen_t but use size_t instead. This affects the
3229 fifth argument of getsockopt() amongst other things. This is now
3230 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3231 can be set for individual OS. I have set it for SunOS5, OSF1, and
3232 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3233 some earlier ones do not.
3234
3235 7. Change 4.30/15 was not doing the test caselessly.
3236
3237 8. The standard form for an IPv6 address literal was being rejected by address
3238 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3239 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3240 this, as well as the form without the "IPv6" on the front (but only when
3241 address literals are enabled, of course).
3242
3243 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3244
324510. Exim crashed if a message with an empty sender address specified by -f
3246 encountered a router with an errors_to setting. This could be provoked only
3247 by a command such as
3248
3249 exim -f "" ...
3250
3251 where an empty string was supplied; "<>" did not hit this bug.
3252
325311. Installed PCRE release 4.5.
3254
325512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3256 remained set. It is now erased.
3257
325813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3259 times from message ids (which are base 36 rather than the normal 62).
3260
326114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3262 were being counted as actual protocol errors, and logged if the log
3263 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3264 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3265 and DATA following a set of rejected RCPTs do not count as protocol errors.
3266 In other words, Exim assumes they were pipelined, though this may not
3267 actually be the case. Of course, in all cases the client gets an
3268 appropriate error code.
3269
327015. If a lookup fails in an ACL condition, a message about the failure may
3271 be available; it is used if testing the ACL cannot continue, because most
3272 such messages specify what the cause of the deferral is. However, some
3273 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3274 that caused an old message to be retained and used if a later statement
3275 caused a defer, replacing the real cause of the deferral.
3276
327716. If an IP address had so many PTR records that the DNS lookup buffer
3278 was not large enough to hold them, Exim could crash while trying to process
3279 the truncated data. It now detects and logs this case.
3280
328117. Further to 4.21/58, another change has been made: if (and only if) the
3282 first line of a message (the first header line) ends with CRLF, a bare LF
3283 in a subsequent header line has a space inserted after it, so as not to
3284 terminate the header.
3285
328618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3287 unnecessarily, used atoi() instead of strtol(), and didn't check the
3288 termination when getting file sizes from file names by regex.
3289
329019. Completely re-implemented the support for maildirsize files, in the light
3291 of a number of problems with the previous contributed implementation
3292 (4.30/29). In particular:
3293
3294 . If the quota is zero, the maildirsize file is maintained, but no quota is
3295 imposed.
3296
3297 . If the maildir directory does not exist, it is created before any attempt
3298 to write a maildirsize file.
3299
3300 . The quota value in the file is just a cache; if the quota is changed in
3301 the transport, the new value overrides.
3302
3303 . A regular expression is available for excluding directories from the
3304 count.
3305
330620. The autoreply transport checks the characters in options that define the
3307 message's headers; it allows continued headers, but it was checking with
3308 isspace() after an embedded newline instead of explicitly looking for a
3309 space or a tab.
3310
331121. If all the "regular" hosts to which an address was routed had passed their
3312 expiry times, and had not reached their retry times, the address was
3313 bounced, even if fallback hosts were defined. Now Exim should go on to try
3314 the fallback hosts.
3315
331622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3317 equivalent code in the SMTP transport. Some hosts send humungous responses
3318 to HELO/EHLO, more than 1024 it seems.
3319
332023. Refactoring: code in filter.c used (void *) for "any old type" but this
3321 gives compiler warnings in some environments. I've now done it "properly",
3322 using a union.
3323
332424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3325 (because of problems with the built-in one) was declared to return uschar *
3326 instead of char *, causing compiler failure.
3327
332825. Fixed a file descriptor leak when processing alias/forward files.
3329
333026. Fixed a minor format string issue in dbfn.c.
3331
333227. Typo in exim.c: ("dmbnz" for "dbmnz").
3333
333428. If a filter file refered to $h_xxx or $message_headers, and the headers
3335 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3336 become corrupted.
3337
333829. When a sender address is verified, it is cached, to save repeating the test
3339 when there is more than one recipient in a message. However, when the
3340 verification involves a callout, it is possible for different callout
3341 options to be set for different recipients. It is too complicated to keep
3342 track of this in the cache, so now Exim always runs a verification when a
3343 callout is required, relying on the callout cache for the optimization.
3344 The overhead is duplication of the address routing, but this should not be
3345 too great.
3346
334730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3348 to be verified with callout=postmaster, and the main callout worked but the
3349 postmaster check failed, the verification correctly failed. However, if a
3350 subsequent RCPT command asked for sender verification *without* the
3351 postmaster check, incorrect caching caused this verification also to fail,
3352 incorrectly.
3353
335431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3355 it was not caching the DNS options (qualify_single, search_parents) that
3356 were used when the lookup failed. A subsequent lookup with different
3357 options therefore always gave the same answer, though there were cases
3358 where it should not have. (Example: a "domains = !$mx_any" option on a
3359 dnslookup router: the "domains" option is always processed without any
3360 widening, but the router might have qualify_single set.) Now Exim uses the
3361 cached value only when the same options are set.
3362
336332. Added John Jetmore's "exipick" utility to the distribution.
3364
336533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3366 than a timeout (e.g. a certificate is required, and is not provided), an
3367 Exim server now closes the connection immediately. Previously it waited for
3368 the client to close - but if the client is SSL, it seems that they each
3369 wait for each other, leading to a delay before one of them times out.
3370
337134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3372 maintained 0.8.x compatibility because I don't think many are using it, and
3373 it is clearly obsolete.
3374
337535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3376 transport.
3377
337836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3379 client certificate was expired. A simple patch fixes this, though I don't
3380 understand the full logic of why the verify callback is called multiple
3381 times.
3382
338337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3384 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3385 which causes problems with some clients (such as the Certicom SSL Plus
3386 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3387 disables the coutermeasure allowing Eudora to connect."
3388
338938. Exim was not checking that a write() to a log file succeeded. This could
3390 lead to Bad Things if a log got too big, in particular if it hit a file
3391 size limit. Exim now panics and dies if it cannot write to a log file, just
3392 as it does if it cannot open a log file.
3393
339439. Modified OS/Makefile-Linux so that it now contains
3395
3396 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3397
3398 The two -D definitions ensure that Exim is compiled with large file
3399 support, which makes it possible to handle log files that are bigger than
3400 2^31.
3401
340240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3403 instance) a domain was checked against a named list that involved a lookup,
3404 causing $domain_data to be set, then another domain was checked against the
3405 same list, then the first domain was re-checked, the value of $domain_data
3406 after the final check could be wrong. In particular, if the second check
3407 failed, it could be set empty. This bug probably also applied to
3408 $localpart_data.
3409
341041. The strip_trailing_dot option was not being applied to the address given
3411 with the -f command-line option.
3412
341342. The code for reading a message's header from the spool was incrementing
3414 $received_count, but never initializing it. This meant that the value was
3415 incorrect (doubled) while delivering a message in the same process in which
3416 it was received. In the most common configuration of Exim, this never
3417 happens - a fresh exec is done - but it can happen when
3418 deliver_drop_privilege is set.
3419
342043. When Exim logs an SMTP synchronization error - client data sent too soon -
3421 it now includes up to 150 characters of the unexpected data in the log
3422 line.
3423
342444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3425 and building data strings. The size of both of these buffers was 10 000
3426 bytes - far larger than anybody would *ever* want, thought I. Needless to
3427 say, somebody hit the limit. I have increased the maximum line length to
3428 20 000 and the maximum data length of concatenated lines to 100 000. I have
3429 also fixed two bugs, because there was no checking on these buffers. Tsk,
3430 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3431 buffer is too small.
3432
343345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3434 lsearch lookups. Now it does.
3435
343646. When parsing a route_list item in a manualroute router, a fixed-length
3437 buffer was used for the list of hosts. I made this 1024 bytes long,
3438 thinking that nobody would ever have a list of hosts that long. Wrong.
3439 Somebody had a whole pile of complicated expansion conditions, and the
3440 string was silently truncated, leading to an expansion error. It turns out
3441 that it is easier to change to an unlimited length (owing to other changes
3442 that have happened since this code was originally written) than to build
3443 structure for giving a limitation error. The length of the item that
3444 expands into the list of hosts is now unlimited.
3445
344647. The lsearch lookup could not handle data where the length of text line was
3447 more than 4095 characters. Such lines were truncated, leading to shortened
3448 data being returned. It should now handle lines of any length.
3449
345048. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3451 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3452 ACL").
3453
345449. Cosmetic tidy to scripts like exicyclog that are generated by globally
3455 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3456 no longer happens in comment lines. A list of replacements is now placed
3457 at the head of all of the source files, except those whose only change is
3458 to replace PERL_COMMAND in the very first #! line.
3459
346050. Replaced the slow insertion sort in queue.c, for sorting the list of
3461 messages on the queue, with a bottom-up merge sort, using code contributed
3462 by Michael Haardt. This should make operations like -bp somewhat faster on
3463 large queues. It won't affect queue runners, except when queue_run_in_order
3464 is set.
3465
346651. Installed eximstats 1.31 in the distribution.
3467
346852. Added support for SRV lookups to the dnslookup router.
3469
347053. If an ACL referred to $message_body or $message_body_end, the value was not
3471 reset for any messages that followed in the same SMTP session.
3472
347354. The store-handling optimization for building very long strings was not
3474 differentiating between the different store pools. I don't think this
3475 actually made any difference in practice, but I've tidied it.
3476
347755. While running the routers to verify a sender address, $sender_address
3478 was still set to the sender address. This is wrong, because when routing to
3479 send a bounce to the sender, it would be empty. Therefore, I have changed
3480 it so that, while verifying a sender address, $sender_address is set to <>.
3481 (There is no change to what happens when verifying a recipient address.)
3482
348356. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3484 target A or AAAA records (if not already returned) without resetting the
3485 qualify_single or search_parents options of the DNS resolver. These are
3486 inappropriate in this case because the targets of MX and SRV records must
3487 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3488 target that, when qualified, matched something in the local domain. These
3489 two options are now turned off when doing these lookups.
3490
349157. It seems that at least some releases of Reiserfs (which does not have the
3492 concept of a fixed number of inodes) returns zero and not -1 for the
3493 number of available inodes. This interacted badly with check_spool_inodes,
3494 which assumed that -1 was the "no such thing" setting. What I have done is
3495 to check that the total number of inodes is greater than zero before doing
3496 the test of how many are available.
3497
349858. When a "warn" ACL statement has a log_message modifier, the message is
3499 remembered, and not repeated. This is to avoid a lot of repetition when a
3500 message has many recipients that cause the same warning to be written.
3501 Howewer, Exim was preserving the list of already written lines for an
3502 entire SMTP session, which doesn't seem right. The memory is now reset if a
3503 new message is started.
3504
350559. The "rewrite" debugging flag was not showing the result of rewriting in the
3506 debugging output unless log_rewrite was also set.
3507
350860. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3509 of (int)(handle) when we know that handle contains (void *)(-1).
3510
351161. The Exim daemon panic-logs an error return when it closes the incoming
3512 connection. However "connection reset by peer" seems to be common, and
3513 isn't really an error worthy of noting specially, so that particular error
3514 is no long logged.
3515
351662. When Exim is trying to find all the local interfaces, it used to panic and
3517 die if the ioctl to get the interface flags failed. However, it seems that
3518 on at least one OS (Solaris 9) it is possible to have an interface that is
3519 included in the list of interfaces, but for which you get a failure error
3520 for this call. This happens when the interface is not "plumbed" into a
3521 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3522 failure of the "get flags" call assumes that the interface is down.
3523
352463. Added a ${eval10: operator, which assumes all numbers are decimal. This
3525 makes life easier for people who are doing arithmetic on fields extracted
3526 from dates, where you often get leading zeros that should not be
3527 interpreted as octal.
3528
352964. Added qualify_domain to the redirect router, to override the global
3530 setting.
3531
353265. If a pathologically long header line contained very many addresses (the
3533 report of this problem mentioned 10 000) and each of them was rewritten,
3534 Exim could use up a very large amount of memory. (It kept on making new
3535 copies of the header line as it rewrote, and never released the old ones.)
3536 At the expense of a bit more processing, the header rewriting function has
3537 been changed so that it no longer eats memory in this way.
3538
353966. The generation of the Received: header has been moved from the time that a
3540 message starts to be received, to the time that it finishes. The timestamp
3541 in the Received: header should now be very close to that of the <= log
3542 line. There are two side-effects of this change:
3543
3544 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3545 logged header lines no longer include the local Received: line, because
3546 it has not yet been created. The same applies to a copy of the message
3547 that is returned to a non-SMTP sender when a message is rejected.
3548
3549 (b) When a filter file is tested using -bf, no additional Received: header
3550 is added to the test message. After some thought, I decided that this
3551 is a bug fix.
3552
3553 This change does not affect the value of $received_for. It is still set
3554 after address rewriting, but before local_scan() is called.
3555
355667. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3557
355868. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3559 gave an unhelpful panic error message, and a defer error. I have managed to
3560 change this behaviour so that it now rejects any supplied certificate,
3561 which seems right, as the list of acceptable certificates is empty.
3562
356369. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3564 gave an unhelpful defer error. I have not managed to make this reject any
3565 supplied certificates, but the error message it gives is "no certificate
3566 supplied", which is not helpful.
3567
356870. exigrep's output now also includes lines that are not associated with any
3569 message, but which match the given pattern. Implemented by a patch from
3570 Martin Sluka, which also tidied up the Perl a bit.
3571
357271. Recipient callout verification, like sender verification, was using <> in
3573 the MAIL FROM command. This isn't really the right thing, since the actual
3574 sender may affect whether the remote host accepts the recipient or not. I
3575 have changed it to use the actual sender in the callout; this means that
3576 the cache record is now keyed on a recipient/sender pair, not just the
3577 recipient address. There doesn't seem to be a real danger of callout loops,
3578 since a callout by the remote host to check the sender would use <>.
3579 [SEE ABOVE: changed after hitting problems.]
3580
358172. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3582 temporary errors. However, in the case of such a code being given after
3583 the end of a data transmission (i.e. after ".") Exim was failing to write
3584 a retry record for the message. (Yes, there was some broken host that was
3585 actually sending 8xx at this point.)
3586
358773. An unknown lookup type in a host list could cause Exim to panic-die when
3588 the list was checked. (An example that provoked this was putting <; in the
3589 middle of a list instead of at the start.) If this happened during a DATA
3590 ACL check, a -D file could be left lying around. This kind of configuration