Magnus' patch for $sending_ip_address and $sending_port.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
41c7c167 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.465 2007/01/30 15:10:58 ph10 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
b01dd148
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
b4ed4da0 70
5dd1517f
PH
71Exim version 4.66
72-----------------
73
74PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
75 fixed by 4.65/MH/01 (is this a record?) are fixed:
76
77 (i) An empty string was always treated as zero by the numeric comparison
78 operators. This behaviour has been restored.
79
80 (ii) It is documented that the numeric comparison operators always treat
81 their arguments as decimal numbers. This was broken in that numbers
82 starting with 0 were being interpreted as octal.
83
84 While fixing these problems I realized that there was another issue that
85 hadn't been noticed. Values of message_size_limit (both the global option
86 and the transport option) were treated as octal if they started with 0.
87 The documentation was vague. These values are now always treated as
88 decimal, and I will make that clear in the documentation.
89
90
93cfa765
TK
91Exim version 4.65
92-----------------
93
94TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
95 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
96 versions. (#438)
97
d6066548
MH
98MH/01 Don't check that the operands of numeric comparison operators are
99 integers when their expansion is in "skipping" mode (fixes bug
100 introduced by 4.64-PH/07).
101
4362ff0d
PH
102PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
103 child addresses, Exim now panics and dies. Previously, because the count
104 is held in a short int, deliveries were likely to be lost. As such a
105 large number of recipients for a single message is ridiculous
106 (performance will be very, very poor), I have chosen to impose a limit
107 rather than extend the field.
108
93cfa765 109
944e9e9c
TF
110Exim version 4.64
111-----------------
aa41d2de 112
21d74bd9
TK
113TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
114 leftover -K file (the existence of which was triggered by #402).
115 While we were at it, introduced process PID as part of the -K
116 filename. This should rule out race conditions when creating
117 these files.
118
119TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
120 processing considerably. Previous code took too long for large mails,
121 triggering a timeout which in turn triggers #401.
122
123TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
124 in the DK code in transports.c. sendfile() is not really portable,
125 hence the _LINUX specificness.
944e9e9c
TF
126
127TF/01 In the add_headers option to the mail command in an Exim filter,
128 there was a bug that Exim would claim a syntax error in any
129 header after the first one which had an odd number of characters
130 in the field name.
131
2b1c6e3a
PH
132PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
133 callout verification, Exim cached a "reject" for the entire domain. This
134 is correct for most verifications, but it is not correct for a recipient
135 verification with use_sender or use_postmaster set, because in that case
136 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
137 case of MAIL FROM:<> rejection from other early rejections (e.g.
138 rejection of HELO). When verifying a recipient using a non-null MAIL
139 address, the cache is ignored if it shows MAIL FROM:<> rejection.
140 Whatever the result of the callout, the value of the domain cache is
141 left unchanged (for any other kind of callout, getting as far as trying
142 RCPT means that the domain itself is ok).
143
1f872c80
PH
144PH/02 Tidied a number of unused variable and signed/unsigned warnings that
145 gcc 4.1.1 threw up.
146
147PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
148 manifest itself as EPIPE rather than ECONNECT. When tidying away a
149 session, the daemon ignores ECONNECT errors and logs others; it now
150 ignores EPIPE as well.
151
d203e649
PH
152PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
153 (quoted-printable decoding).
154
cc2ed8f7 155PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 156 later the small subsequent patch to fix an introduced bug.
f951fd57 157
ddfcd446
PH
158PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
159
d45b1de8
PH
160PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
161
162PH/08 An error is now given if message_size_limit is specified negative.
163
38a0a95f 164PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 165 to be given (somewhat) arbitrary names.
38a0a95f 166
a2405d83
JJ
167JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
168 in 4.64-PH/09.
169
170JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
171 miscellaneous code fixes
172
6ea85e9a
PH
173PH/10 Added the log_reject_target ACL modifier to specify where to log
174 rejections.
175
26da7e20
PH
176PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
177 hostname. This is wrong, because it relates to the incoming message (and
178 probably the interface on which it is arriving) and not to the outgoing
179 callout (which could be using a different interface). This has been
180 changed to use the value of the helo_data option from the smtp transport
181 instead - this is what is used when a message is actually being sent. If
182 there is no remote transport (possible with a router that sets up host
183 addresses), $smtp_active_hostname is used.
6ea85e9a 184
14aa5a05 185PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 186 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
187 (a) The code assumed that strncpy() returns a negative number on buffer
188 overflow, which isn't the case. Replaced with Exim's string_format()
189 function.
190 (b) There were several signed/unsigned issues. I just did the minimum
191 hacking in of casts. There is scope for a larger refactoring.
192 (c) The code used strcasecmp() which is not a standard C function.
193 Replaced with Exim's strcmpic() function.
194 (d) The code set only $1; it now sets $auth1 as well.
195 (e) A simple test gave the error "authentication client didn't specify
196 service in request". It would seem that Dovecot has changed its
197 interface. Fortunately there's a specification; I followed it and
198 changed what the client sends and it appears to be working now.
199
ff75a1f7
PH
200PH/13 Added $message_headers_raw to provide the headers without RFC 2047
201 decoding.
202
e6f6568e
PH
203PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
204 address A is aliased to B and C, where B exists and C does not. Without
205 -v the output is "A verified" because verification stops after a
206 successful redirection if more than one address is generated. However,
207 with -v the child addresses are also verified. Exim was outputting "A
208 failed to verify" and then showing the successful verification for C,
209 with its parentage. It now outputs "B failed to verify", showing B's
210 parentage before showing the successful verification of C.
211
d6f6e0dc
PH
212PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
213 look up a TXT record in a specific list after matching in a combined
214 list.
215
322050c2
PH
216PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
217 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
218 they consult the DNS. I had assumed they would set it the way they
219 wanted; and indeed my experiments on Linux seem to show that in some
220 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
221 To be on the safe side, however, I have now made the interface to
222 host_find_byname() similar to host_find_bydns(), with an argument
223 containing the DNS resolver options. The host_find_byname() function now
224 sets these options at its start, just as host_find_bydns() does. The smtp
225 transport options dns_qualify_single and dns_search_parents are passed to
226 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
227 of host_find_byname() use the default settings of RES_DEFNAMES
228 (qualify_single) but not RES_DNSRCH (search_parents).
229
08955dd3
PH
230PH/17 Applied (a modified version of) Nico Erfurth's patch to make
231 spool_read_header() do less string testing, by means of a preliminary
232 switch on the second character of optional "-foo" lines. (This is
233 overdue, caused by the large number of possibilities that now exist.
234 Originally there were few.) While I was there, I also converted the
235 str(n)cmp tests so they don't re-test the leading "-" and the first
236 character, in the hope this might squeeze out yet more improvement.
237
1eccaa59
PH
238PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
239 flag allowing group syntax was set by the header_syntax check but not
240 turned off, possible causing trouble later; (2) The flag was not being
241 set at all for the header_verify test, causing "group"-style headers to
242 be rejected. I have now set it in this case, and also caused header_
243 verify to ignore an empty address taken from a group. While doing this, I
244 came across some other cases where the code for allowing group syntax
245 while scanning a header line wasn't quite right (mostly, not resetting
246 the flag correctly in the right place). These bugs could have caused
247 trouble for malformed header lines. I hope it is now all correct.
248
602e59e5
PH
249PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
250 with the "reply" argument non-NULL. The code, however (which originally
251 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
252 but it didn't always do it. This confused somebody who was copying the
253 code for some other use. I have removed all the tests.
254
411ef850
PH
255PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
256 feature that was used to support insecure browsers during the U.S. crypto
257 embargo. It requires special client support, and Exim is probably the
258 only MTA that supported it -- and would never use it because real RSA is
259 always available. This code has been removed, because it had the bad
260 effect of slowing Exim down by computing (never used) parameters for the
261 RSA_EXPORT functionality.
262
7befa435
PH
263PH/21 On the advice of Timo Sirainen, added a check to the dovecot
264 authenticator to fail if there's a tab character in the incoming data
265 (there should never be unless someone is messing about, as it's supposed
266 to be base64-encoded). Also added, on Timo's advice, the "secured" option
267 if the connection is using TLS or if the remote IP is the same as the
268 local IP, and the "valid-client-cert option" if a client certificate has
269 been verified.
270
48da4259 271PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
272 authenticators. This can be used for authorization after authentication
273 succeeds. (In the case of plaintext, it servers for both authentication
274 and authorization.)
275
48da4259
PH
276PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
277 if any retry times were supplied.
278
d1d5595c
PH
279PH/24 Exim crashed if verify=helo was activated during an incoming -bs
280 connection, where there is no client IP address to check. In this
281 situation, the verify now always succeeds.
282
0ef732d9
PH
283PH/25 Applied John Jetmore's -Mset patch.
284
328895cc
PH
285PH/26 Added -bem to be like -Mset, but loading a message from a file.
286
fd700877
PH
287PH/27 In a string expansion for a processed (not raw) header when multiple
288 headers of the same name were present, leading whitespace was being
289 removed from all of them, but trailing whitespace was being removed only
290 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
291 before concatenation. Completely empty headers in a concatenation (as
292 before) are ignored.
fd700877 293
8dce1a6f
PH
294PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
295 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
296
17af4a17
PH
297PH/29 [Removed. This was a change that I later backed out, and forgot to
298 correct the ChangeLog entry (that I had efficiently created) before
299 committing the later change.]
f6c332bd
PH
300
301PH/30 Exim was sometimes attempting to deliver messages that had suffered
302 address errors (4xx response to RCPT) over the same connection as other
303 messages routed to the same hosts. Such deliveries are always "forced",
304 so retry times are not inspected. This resulted in far too many retries
305 for the affected addresses. The effect occurred only when there were more
306 hosts than the hosts_max_try setting in the smtp transport when it had
307 the 4xx errors. Those hosts that it had tried were not added to the list
308 of hosts for which the message was waiting, so if all were tried, there
309 was no problem. Two fixes have been applied:
310
311 (i) If there are any address or message errors in an SMTP delivery, none
312 of the hosts (tried or untried) are now added to the list of hosts
313 for which the message is waiting, so the message should not be a
314 candidate for sending over the same connection that was used for a
315 successful delivery of some other message. This seems entirely
316 reasonable: after all the message is NOT "waiting for some host".
317 This is so "obvious" that I'm not sure why it wasn't done
318 previously. Hope I haven't missed anything, but it can't do any
319 harm, as the worst effect is to miss an optimization.
320
321 (ii) If, despite (i), such a delivery is accidentally attempted, the
322 routing retry time is respected, so at least it doesn't keep
323 hammering the server.
324
c1114884
PH
325PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
326 in ${readsocket because some servers need this prod.
327
7a0743eb
PH
328PH/32 Added some extra debug output when updating a wait-xxx database.
329
0d85fa3f
PH
330PH/33 The hint "could be header name not terminated by colon", which has been
331 given for certain expansion errors for a long time, was not being given
332 for the ${if def:h_colon_omitted{... case.
333
1bf43b78
PH
334PH/34 The spec says: "With one important exception, whenever a domain list is
335 being scanned, $domain contains the subject domain." There was at least
336 one case where this was not true.
337
520de300
PH
338PH/35 The error "getsockname() failed: connection reset by peer" was being
339 written to the panic log as well as the main log, but it isn't really
340 panic-worthy as it just means the connection died rather early on. I have
341 removed the panic log writing for the ECONNRESET error when getsockname()
342 fails.
343
48c7f9e2
PH
344PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
345 runs only) independently of the message's sender address. This meant
346 that, if the 4xx error was in fact related to the sender, a different
347 message to the same recipient with a different sender could confuse
348 things. In particualar, this can happen when sending to a greylisting
349 server, but other circumstances could also provoke similar problems.
350 I have changed the default so that the retry time for these errors is now
351 based a combination of the sender and recipient addresses. This change
352 can be overridden by setting address_retry_include_sender=false in the
353 smtp transport.
354
99ea1c86
PH
355PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
356 remote server are returned as part of bounce messages. This was not
357 happening for LMTP over a pipe (the lmtp transport), but now it is the
358 same for both kinds of LMTP.
359
a2042e78
PH
360PH/38 Despite being documented as not happening, Exim was rewriting addresses
361 in header lines that were in fact CNAMEs. This is no longer the case.
362
4fbcfc2e
PH
363PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
364 and queue runs started by the daemon processed all messages. This has
365 been fixed so that -R and -S can now usefully be given with -q<time>.
366
aa41d2de
PH
367PH/40 Import PCRE release 6.7 (fixes some bugs).
368
af561417
PH
369PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
370
3cc66b45
PH
371PH/42 Give an error if -q is specified more than once.
372
194cc0e4
PH
373PH/43 Renamed the variables $interface_address and $interface_port as
374 $received_ip_address and $received_port, to make it clear that these
375 values apply to message reception, and not to the outgoing interface when
376 a message is delivered. (The old names remain recognized, of course.)
377
a401ddaa
PH
378PH/44 There was no timeout on the connect() call when using a Unix domain
379 socket in the ${readsocket expansion. There now is.
380
4e88a19f
PH
381PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
382 be meaningful with "accept".
383
d7d7b289
SC
384SC/01 Eximstats V1.43
385 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
386
387SC/02 Eximstats V1.44
388 Use a glob alias rather than an array ref in the generated
389 parser. This improves both readability and performance.
390
391SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
392 Collect SpamAssassin and rejection statistics.
393 Don't display local sender or destination tables unless
394 there is data to show.
395 Added average volumes into the top table text output.
396
397SC/04 Eximstats V1.46
398 Collect data on the number of addresses (recipients)
399 as well as the number of messages.
400
401SC/05 Eximstats V1.47
402 Added 'Message too big' to the list of mail rejection
403 reasons (thanks to Marco Gaiarin).
404
405SC/06 Eximstats V1.48
406 Mainlog lines which have GMT offsets and are too short to
407 have a flag are now skipped.
408
409SC/07 Eximstats V1.49 (Alain Williams)
410 Added the -emptyok flag.
411
412SC/08 Eximstats V1.50
413 Fixes for obtaining the IP address from reject messages.
414
0ea2a468
JJ
415JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
416 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
417 whitesspace changes from 4.64-PH/27
418
419JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
420 match 4.64-PH/13
421
422JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
423 are found, allow negative numbers in numeric criteria)
424
425JJ/06 exipick.20061117.2, added new $message_body_missing variable
426
427JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
428 to match changes made in 4.64-PH/43
429
8a10f5a4
PH
430PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
431
30e18802
PH
432PH/47 Put in an explicit test for a DNS lookup of an address record where the
433 "domain" is actually an IP address, and force a failure. This locks out
434 those revolvers/nameservers that support "A-for-A" lookups, in
435 contravention of the specifications.
436
55728a4f
PH
437PH/48 When a host name was looked up from an IP address, and the subsequent
438 forward lookup of the name timed out, the host name was left in
439 $sender_host_name, contrary to the specification.
d7d7b289 440
d7837193
PH
441PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
442 restricted to single-key lookups, Exim was not diagnosing an error if
443 * or *@ was used with a query-style lookup.
444
87054a31
PH
445PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
446
ea2c01d2
MH
447MH/01 local_scan ABI version incremented to 1.1. It should have been updated
448 long ago, but noone interested enough thought of it. Let's just say that
449 the "1.1" means that there are some new functions that weren't there at
450 some point in the past.
451
e4fa6968
PH
452PH/51 Error processing for expansion failure of helo_data from an smtp
453 transport during callout processing was broken.
454
56f5d9bd
PH
455PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
456 tested/used via the -bh/-bhc/-bs options.
457
922e1c28
PH
458PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
459 bug, fixed in subsequent PCRE releases).
460
21eb6e72
PH
461PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
462 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
463
a0540757
PH
464PH/55 Check for a ridiculously long file name in exim_dbmbuild.
465
944e9e9c 466
478be7b0
SC
467Exim version 4.63
468-----------------
469
470SC/01 Use a glob alias rather than an array ref in eximstats generated
471 parser. This improves both readability and performance.
472
473SC/02 Collect SpamAssassin and rejection statistics in eximstats.
474 Don't display local sender or destination tables in eximstats unless
475 there is data to show.
476 Added average volumes into the eximstats top table text output.
477
478SC/03 Collect data on the number of addresses (recipients) as well
479 as the number of messages in eximstats.
480
2b965a65
TF
481TF/01 Correct an error in the documentation for the redirect router. Exim
482 does (usually) call initgroups() when daemonizing.
478be7b0 483
45b91596
PH
484TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
485 with consistent privilege compared to when running as a daemon.
478be7b0 486
c59f5781
TF
487TF/03 Note in the spec that $authenticated_id is not set for local
488 submissions from trusted users.
489
90fc3069
TF
490TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
491 Thanks to Dean Brooks <dean@iglou.com> for the patch.
492
6083aca0
TF
493TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
494 by adding some example configuration directives to the default
495 configuration file. A little bit of work is required to uncomment the
496 directives and define how usernames and passwords are checked, but
497 there is now a framework to start from.
498
765b530f
PH
499PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
500 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
501 without this. I don't know how relevant this is to other LDAP libraries.
502
4e167a8c
PH
503PH/02 Add the verb name to the "unknown ACL verb" error.
504
4608d683
PH
505PH/03 Magnus Holmgren's patch for filter_prepend_home.
506
b8dc3e4a
PH
507PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
508
5418e93b
PH
509PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
510 directory not expanded when it should be if an expanded home directory
511 was set for the address (which is overridden by the transport).
512
b4a9bda2
PH
513PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
514 libradius.
515
45b91596
PH
516PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
517 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
518 because it is too late at that time, and has no effect.
519
5547e2c5
PH
520PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
521 security issue with \' (bugzilla #107). I could not use the
522 PQescapeStringConn() function, because it needs a PGconn value as one of
523 its arguments.
524
dbcef0ea
PH
525PH/08 When testing addresses using -bt, indicate those final addresses that
526 are duplicates that would not cause an additional delivery. At least one
527 person was confused, thinking that -bt output corresponded to deliveries.
528 (Suppressing duplicates isn't a good idea as you lose the information
529 about possibly different redirections that led to the duplicates.)
530
25257489
PH
531PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
532 systems where poll() doesn't work, in particular OS X.
533
c816d124
PH
534PH/10 Added more information to debugging output for retry time not reached.
535
a9ccd69a
PH
536PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
537 operations in malware.c.
538
75fa1910
PH
539PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
540 signatures.
541
a7d7aa58
PH
542PH/13 If write_rejectlog was set false when logging was sent to syslog with
543 syslog_duplication set false, log lines that would normally be written
544 both the the main log and to the reject log were not written to syslog at
545 all.
546
42119b09
PH
547PH/14 In the default configuration, change the use of "message" in ACL warn
548 statements to "add_header".
549
41609df5
PH
550PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
551 not followed by a command (e.g. "seen endif").
552
a5bd321b
PH
553PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
554 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
555 latter.
556
e85a7ad5 557PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
558 so that it is now:
559
e85a7ad5
PH
560 ${if or { \
561 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
562 { match{$h_precedence:}{(?i)bulk|list|junk} } \
563 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
564 }{no}{yes}}
565
e85a7ad5
PH
566 The Auto-Submitted: and various List- headers are standardised, whereas I
567 don't think Precedence: ever was.
5dff5817 568
d8fe1c03
PH
569PH/18 Refactored debugging code in route_finduser() to show more information,
570 in particular, the error code if getpwnam() issues one.
571
16282d2b
PH
572PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
573 This is apparently needed in addition to the PH/07 change above to avoid
574 any possible encoding problems.
575
35d40a98
PH
576PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
577 but not after initializing Perl.
578
034d99ab
PH
579PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
580 output them only if debugging. By default they are written stderr,
581 apparently, which is not desirable.
582
6ec97b1b
PH
583PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
584 queries.
585
e22ca4ac
JJ
586JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
587 --not options
588
589JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
590
33d73e3b
PH
591PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
592 authenticated or an ident call has been made. Suppress the default
593 values for $authenticated_id and $authenticated_sender (but permit -oMai
594 and -oMas) when testing with -bh.
595
9ecb03f3
PH
596PH/24 Re-jigged the order of the tests in the default configuration so that the
597 tests for valid domains and recipients precede the DNS black list and CSA
598 tests, on the grounds that those ones are more expensive.
599
084efe8d
PH
600PH/25 Exim was not testing for a space following SMTP commands such as EHLO
601 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
602 This bug exists in every version of Exim that I still have, right back to
603 0.12.
604
366fc9f0
PH
605PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
606 However, an attempt to turn on case-sensitivity in a regex key by
607 including (?-i) didn't work because the subject string was already
608 lowercased, and the effects were non-intuitive. It turns out that a
609 one-line patch can be used to allow (?-i) to work as expected.
610
c59f5781 611
c887c79e
TF
612Exim version 4.62
613-----------------
614
615TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
616 other effects) broke the use of negated acl sub-conditions.
617
1cce3af8
PH
618PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
619 patch).
620
afb3eaaf
PH
621PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
622 "Deny" causes Exim to reject the incoming connection with a 554 error.
623 Unfortunately, if there is a major crisis, such as a disk failure,
624 tcp-wrappers gives "deny", whereas what one would like would be some
625 kind of temporary error. A kludge has been added to help with this.
626 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
627 554 error is used if errno is still zero or contains ENOENT (which occurs
628 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
629 451 error is used.
630
e173618b
PH
631PH/03 Add -lutil to the default FreeBSD LIBS setting.
632
dd16e114
PH
633PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
634 errors. Otherwise a message that provokes a temporary error (when other
635 messages do not) can cause a whole host to time out.
636
f7fd3850
PH
637PH/05 Batch deliveries by appendfile and pipe transports did not work when the
638 addresses were routed directly to files or pipes from a redirect router.
639 File deliveries just didn't batch; pipe deliveries might have suffered
640 odd errors.
641
d87df92c
PH
642PH/06 A failure to get a lock for a hints database would erroneously always say
643 "Failed to get write lock", even when it was really a read lock.
644
7e9f683d
PH
645PH/07 The appendfile transport was creating MBX lock files with a fixed mode
646 of 0600. This has been changed to use the value of the lockfile_mode
647 option (which defaults to 0600).
648
bfad5236
PH
649PH/08 Applied small patch from the Sieve maintainer.
650
01c490df
PH
651PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
652 folder from quota calculations, a direct delivery into this folder messed
653 up the contents of the maildirsize file. This was because the regex was
654 used only to exclude .Trash (or whatever) when the size of the mailbox
655 was calculated. There was no check that a delivery was happening into an
656 excluded directory. This bug has been fixed by ignoring all quota
657 processing for deliveries into excluded directories.
658
d6629cdc
PH
659PH/10 Added the maildirfolder_create_regex option to appendfile.
660
1cce3af8 661
214e2000
PH
662Exim version 4.61
663-----------------
664
665PH/01 The code for finding all the local interface addresses on a FreeBSD
666 system running IPv6 was broken. This may well have applied to all BSD
667 systems, as well as to others that have similar system calls. The broken
668 code found IPv4 interfaces correctly, but gave incorrect values for the
669 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
670 that it would not match correctly against @[] and not recognize the IPv6
671 addresses as local.
672
f9daeae0
PH
673PH/02 The ipliteral router was not recognizing addresses of the form user@
674 [ipv6:....] because it didn't know about the "ipv6:" prefix.
675
7e66e54d
PH
676PH/03 Added disable_ipv6.
677
c8ea1597
PH
678PH/04 Changed $reply_address to use the raw form of the headers instead of the
679 decoded form, because it is most often used to construct To: headers
680 lines in autoreplies, and the decoded form may well be syntactically
681 invalid. However, $reply_address has leading white space removed, and all
682 newlines turned into spaces so that the autoreply transport does not
683 grumble.
684
911f6fde
PH
685PH/05 If group was specified without a user on a router, and no group or user
686 was specified on a transport, the group from the router was ignored.
687
47ca6d6c
PH
688PH/06 Increased the number of ACL variables to 20 of each type, and arranged
689 for visible compile-time settings that can be used to change these
690 numbers, for those that want even more. Backwards compatibility with old
691 spool files has been maintained. However, going back to a previous Exim
692 release will lost any variables that are in spool files.
693
ed0e9820
PH
694PH/07 Two small changes when running in the test harness: increase delay when
695 passing a TCP/IP connection to a new process, in case the original
696 process has to generate a bounce, and remove special handling of
697 127.0.0.2 (sic), which is no longer necessary.
698
eff37e47
PH
699PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
700 be the same on different OS.
701
1921d2ea
PH
702PH/09 Moved a debug statement in filter processing to avoid a race problem when
703 testing.
704
b3f69ca8
JJ
705JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
706 whether --show-vars was specified or not
707
708JJ/02 exipick: Added support for new ACL variable spool format introduced
709 in 4.61-PH/06
710
424a1c63
PH
711PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
712 syntactically invalid From: or Reply-to: line, and a filter used this to
713 generate an autoreply, and therefore failed to obtain an address for the
714 autoreply, Exim could try to deliver to a non-existent relative file
715 name, causing unrelated and misleading errors. What now happens is that
716 it logs this as a hard delivery error, but does not attempt to create a
717 bounce message.
718
7a100415
PH
719PH/11 The exinext utility has a -C option for testing purposes, but although
720 the given file was scanned by exinext itself; it wasn't being passed on
721 when Exim was called.
722
19b9dc85
PH
723PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
724 an end-of-file indication when reading a command response.
725
309bd837
PH
726PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
727 compiled. In many other places in Exim, IPv6 addresses are always
728 recognized, so I have changed this. It also means that IPv4 domain
729 literals of the form [IPV4:n.n.n.n] are now always recognized.
730
59e82a2a
PH
731PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
732 used if the router is not running as root, for example, when verifying at
733 ACL time, or when using -bh. The debugging output from this situation was
734 non-existent - all you got was a failure to exec. I have made two
735 changes:
736
737 (a) Failures to set uid/gid, the current directory, or a process leader
738 in a subprocess such as that created by queryprogram now generate
739 suitable debugging ouput when -d is set.
740
741 (b) The queryprogram router detects when it is not running as root,
742 outputs suitable debugging information if -d is set, and then runs
743 the subprocess without attempting to change uid/gid.
744
9edc04ce
PH
745PH/15 Minor change to Makefile for building test_host (undocumented testing
746 feature).
747
1349e1e5
PH
748PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
749 additional section of a DNS packet that returns MX or SRV records.
750 Instead, it always explicitly searches for A/AAAA records. This avoids
751 major problems that occur when a DNS server includes only records of one
752 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
753 fixed another bug: if SRV records were looked up and the corresponding
754 address records were *not* found in the additional section, the port
755 values from the SRV records were lost.
756
ea49d0e1
PH
757PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
758 using the correct key (the original address) when searching the retry
759 rules in order to find which one to use for generating the retry hint.
760
064a94c9
PH
761PH/18 If quota_warn_message contains a From: header, Exim now refrains from
762 adding the default one. Similarly, if it contains a Reply-To: header, the
763 errors_reply_to option, if set, is not used.
764
727071f8
PH
765PH/19 When calculating a retry time, Exim used to measure the "time since
766 failure" by looking at the "first failed" field in the retry record. Now
767 it does not use this if it is later than than the arrival time of the
768 message. Instead it uses the arrival time. This makes for better
769 behaviour in cases where some deliveries succeed, thus re-setting the
770 "first failed" field. An example is a quota failure for a huge message
771 when small messages continue to be delivered. Without this change, the
772 "time since failure" will always be short, possible causing more frequent
773 delivery attempts for the huge message than are intended.
dd16e114 774 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 775
f78eb7c6
PH
776PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
777 $1, $2, $3) because the numerical variables can be reset during some
778 expansion items (e.g. "match"), thereby losing the authentication data.
779
21c28500
PH
780PH/21 Make -bV show the size of off_t variables so that the test suite can
781 decide whether to run tests for quotas > 2G.
782
783PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
784 mailbox_size, and mailbox_filecount in the appendfile transport. If a
785 filecount value is greater than 2G or if a quota value is greater than 2G
786 on a system where the size of off_t is not greater than 4, a panic error
787 is given.
788
1688f43b
PH
789PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
790 never match. The debug and -bh output now contains an explicit error
791 message indicating a malformed IPv4 address or mask.
792
793PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
794 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
795 PH/23 above applies.
796
9675b384
PH
797PH/25 Do not write to syslog when running in the test harness. The only
798 occasion when this arises is a failure to open the main or panic logs
799 (for which there is an explicit test).
800
6a3f1455
PH
801PH/26 Added the /no_tell option to "control=freeze".
802
dac79d3e
PH
803PH/27 If a host name lookup failed very early in a connection, for example, if
804 the IP address matched host_lookup and the reverse lookup yielded a name
805 that did not have a forward lookup, an error message of the form "no IP
806 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
807 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 808
5977a0b3
PH
809PH/28 An enabling patch from MH: add new function child_open_exim2() which
810 allows the sender and the authenticated sender to be set when
811 submitting a message from within Exim. Since child_open_exim() is
812 documented for local_scan(), the new function should be too.
813
c91535f3
PH
814PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
815 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
816 results in an empty string is now treated as unset.
817
0d46a8c8
PH
818PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
819
278c6e6c
PH
820PH/31 Added sender_verify_fail logging option.
821
2cbb4081
PH
822PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
823 needed by RFC 822 but not by RFC 2822 was commented out. I have now
824 tidied the source and removed it altogether.
825
3eef829e
PH
826PH/33 When a queue run was abandoned because the load average was too high, a
827 log line was always written; now it is written only if the queue_run log
828 selector is set. In addition, the log line for abandonment now contains
829 information about the queue run such as the pid. This is always present
830 in "start" and "stop" lines but was omitted from the "abandon" line.
831
1ab95fa6
PH
832PH/34 Omit spaces between a header name and the colon in the error message that
833 is given when verify = headers_syntax fails (if there are lots of them,
834 the message gets confusing).
835
230205fc
PH
836PH/35 Change the default for dns_check_names_pattern to allow slashes within
837 names, as there are now some PTR records that contain slashes. This check
838 is only to protect against broken name servers that fall over on strange
839 characters, so the fact that it applies to all lookups doesn't matter.
840
75e0e026
PH
841PH/36 Now that the new test suite is complete, we can remove some of the
842 special code in Exim that was needed for the old test suite. For example,
843 sorting DNS records because real resolvers return them in an arbitrary
844 order. The new test suite's fake resolver always returns records in the
845 same order.
846
847PH/37 When running in the test harness, use -odi for submitted messages (e.g.
848 bounces) except when queue_only is set, to avoid logging races between
849 the different processes.
850
145396a6
PH
851PH/38 Panic-die if .include specifies a non-absolute path.
852
3cd34f13
PH
853PH/39 A tweak to the "H" retry rule from its user.
854
11121d3d
JJ
855JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
856 a label. They prevented compilation on older perls.
857
858JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
859 a warning to be raised on newish perls.
860
861JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
862 on queue. Changes to match documented behaviour of showing count of
863 messages matching specified criteria.
864
8def5aaf
PH
865PH/40 Changed the default ident timeout from 30s to 5s.
866
929ba01c
PH
867PH/41 Added support for the use of login_cap features, on those BSD systems
868 that have them, for controlling the resources used by pipe deliveries.
869
2632889e
PH
870PH/42 The content-scanning code uses fopen() to create files in which to put
871 message data. Previously it was not paying any attention to the mode of
872 the files. Exim runs with umask(0) because the rest of the code creates
873 files with open(), and sets the required mode explicitly. Thus, these
874 files were ending up world-writeable. This was not a big issue, because,
875 being within the spool directory, they were not world-accessible. I have
876 created a function called modefopen, which takes an additional mode
877 argument. It sets umask(777), creates the file, chmods it to the required
878 mode, then resets the umask. All the relevant calls to fopen() in the
879 content scanning code have been changed to use this function.
880
944a9c55
PH
881PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
882 to 24 hours. This avoids potential overflow problems when processing G
883 and H retry rules. I suspect nobody ever tinkers with this value.
884
4a23603b
PH
885PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
886
4730f942
PH
887PH/45 When the plaintext authenticator is running as a client, the server's
888 challenges are checked to ensure they are valid base64 strings. By
889 default, the authentication attempt is cancelled if an invalid string is
890 received. Setting client_ignore_invalid_base64 true ignores these errors.
891 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
892 they are received. Thus, the responses can be made to depend on the
893 challenges. If an invalid string is ignored, an empty string is placed in
894 the variable.
895
30dba1e6
PH
896PH/46 Messages that are created by the autoreply transport now contains a
897 References: header, in accordance with RFCs 2822 and 3834.
898
382afc6b
PH
899PH/47 Added authenticated_sender_force to the smtp transport.
900
a86229cf
PH
901PH/48 The ${prvs expansion was broken on systems where time_t was long long.
902
50c99ba6
PH
903PH/49 Installed latest patch from the Sieve maintainer.
904
d35e429d
PH
905PH/50 When an Exim quota was set without a file count quota, and mailbox_size
906 was also set, the appendfile transport was unnecessarily scanning a
907 directory of message files (e.g. for maildir delivery) to find the count
908 of files (along with the size), even though it did not need this
909 information. It now does the scan only if it needs to find either the
910 size of the count of files.
911
f90d018c
PH
912PH/51 Added ${time_eval: to convert Exim time strings into seconds.
913
75def545
PH
914PH/52 Two bugs concerned with error handling when the smtp transport is
915 used in LMTP mode:
916
917 (i) Exim was not creating retry information for temporary errors given
918 for individual recipients after the DATA command when the smtp transport
919 was used in LMTP mode. This meant that they could be retried too
920 frequently, and not timed out correctly.
921
922 (ii) Exim was setting the flag that allows error details to be returned
923 for LMTP errors on RCPT commands, but not for LMTP errors for individual
924 recipients that were returned after the DATA command.
925
926PH/53 This is related to PH/52, but is more general: for any failing address,
927 when detailed error information was permitted to be returned to the
928 sender, but the error was temporary, then after the final timeout, only
929 "retry timeout exceeded" was returned. Now it returns the full error as
930 well as "retry timeout exceeded".
931
c46782ef
PH
932PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
933 do this, and (what is worse) MTAs that accept it.
934
71fafd95
PH
935PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
936 will now be deprecated.
937
2c5db4fd
PH
938PH/56 New os.c-cygwin from the Cygwin maintainer.
939
9cf6b11a
JJ
940JJ/06 exipick: added --unsorted option to allow unsorted output in all output
941 formats (previously only available in exim formats via -bpr, -bpru,
942 and -bpra. Now also available in native and exiqgrep formats)
943
944JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
945 with very large, slow to parse queues
946
947JJ/08 exipick: added ! as generic prefix to negate any criteria format
948
949JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
950
898d150f
PH
951PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
952 responses to authentication challenges, though it was showing the
953 challenges; (ii) I've removed the CR characters from the debug output for
954 SMTP output lines.
955
46218253
PH
956PH/58 Allow for the insertion of a newline as well as a space when a string
957 is turned into more than one encoded-word during RFC 2047 encoding. The
958 Sieve code now uses this.
959
e97957bc
PH
960PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
961 data_4xx, lost_connection, tls_required.
962
81e509d7
PH
963PH/60 When a VRFY deferred or FAILED, the log message rather than the user
964 message was being sent as an SMTP response.
965
3d240ff7
PH
966PH/61 Add -l and -k options to exicyclog.
967
b37c4101
PH
968PH/62 When verifying, if an address was redirected to one new address, so that
969 verification continued, and the new address failed or deferred after
970 having set something in $address_data, the value of $address_data was not
971 passed back to the ACL. This was different to the case when no
972 redirection occurred. The value is now passed back in both cases.
973
79378e0f
PH
974PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
975 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
976 use login_cap.h, so on its own it isn't the distinguishing feature. The
977 new name refers directly to the setclassresources() function.
978
e49c7bb4
PH
979PH/65 Added configuration files for NetBSD3.
980
d114ec46
PH
981PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
982
f3d7df6c
PH
983PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
984 is preferred over IPv4.
985
715ab376
PH
986PH/68 The bounce_return_message and bounce_return_body options were not being
987 honoured for bounces generated during the reception of non-SMTP messages.
988 In particular, this applied to messages rejected by the ACL. This bug has
989 been fixed. However, if bounce_return_message is true and bounce_return_
990 body is false, the headers that are returned for a non-SMTP message
991 include only those that have been read before the error was detected.
992 (In the case of an ACL rejection, they have all been read.)
993
6b31b150
PH
994PH/69 The HTML version of the specification is now built in a directory called
995 spec_html instead of spec.html, because the latter looks like a path with
996 a MIME-type, and this confuses some software.
997
998PH/70 Catch two compiler warnings in sieve.c.
999
d515a917
PH
1000PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1001 function verify_get_ident() calls ip_connect() to connect a socket, but
1002 if the "connect()" function timed out, ip_connect() used to close the
1003 socket. However, verify_get_ident() also closes the socket later, and in
1004 between Exim writes to the log, which may get opened at this point. When
1005 the socket was closed in ip_connect(), the log could get the same file
1006 descriptor number as the socket. This naturally causes chaos. The fix is
1007 not to close the socket in ip_connect(); the socket should be closed by
1008 the function that creates it. There was only one place in the code where
1009 this was missing, in the iplookup router, which I don't think anybody now
1010 uses, but I've fixed it anyway.
1011
9b8fadde
PH
1012PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1013 well as to direct DNS lookups. Otherwise the handling of names in host
1014 lists is inconsistent and therefore confusing.
1015
214e2000 1016
5de37277
PH
1017Exim version 4.60
1018-----------------
1019
cc38ddbf
PH
1020PH/01 Two changes to the default runtime configuration:
1021
1022 (1) Move the checks for relay_from_hosts and authenticated clients from
1023 after to before the (commented out) DNS black list checks.
1024
1025 (2) Add control=submission to the relay_from_hosts and authenticated
1026 clients checks, on the grounds that messages accepted by these
1027 statements are most likely to be submissions.
5de37277 1028
72fdd6ae
PH
1029PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1030
1031 (1) Generate an error if the third argument for the ${prvs expansion is
1032 not a single digit.
1033
1034 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1035 string.
1036
1037 (3) Reset the variables that are obtained from the first argument of
1038 ${prvscheck and used in the second argument before leaving the code,
1039 because their memory is reclaimed, so using them afterwards may do
1040 silly things.
1041
1042 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1043 one (it's much easier than Tom thought :-).
1044
1045 (5) Because of (4), we can now allow for the use of $prvscheck_result
1046 inside the third argument.
cb9328de 1047
cb741023
PH
1048PH/03 For some reason, the default setting of PATH when running a command from
1049 a pipe transport was just "/usr/bin". I have changed it to
1050 "/bin:/usr/bin".
1051
f174f16e
PH
1052PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1053 anything to be listed in the output from -bV.
b2f5a032 1054
c25242d7
PH
1055PH/05 When a filter generated an autoreply, the entire To: header line was
1056 quoted in the delivery log line, like this:
1057
1058 => >A.N.Other <ano@some.domain> <original@ddress> ...
1059
1060 This has been changed so that it extracts the operative address. There
1061 may be more than one such address. If so, they are comma-separated, like
1062 this:
1063
1064 => >ano@some.domain,ona@other.domain <original@ddress> ...
1065
82c19f95
PH
1066PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1067 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1068 not being looked up in the rDNS to get a host name, Exim was showing the
1069 IP address twice in Received: lines, even though the IP addresses were
1070 identical. For example:
1071
1072 Received: from [1.2.3.4] (helo=[1.2.3.4])
1073
1074 However, if the real host name was known, it was omitting the HELO data
1075 if it matched the actual IP address. This has been tidied up so that it
1076 doesn't show the same IP address twice.
1077
d7ffbc12
PH
1078PH/07 When both +timestamp and +memory debugging was on, the value given by
1079 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1080 called by the debug printing, thereby overwriting the timestamp buffer.
1081 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1082
9f526266
PH
1083PH/08 When the original message was included in an autoreply transport, it
1084 always said "this is a copy of the message, including all the headers",
1085 even if body_only or headers_only was set. It now gives an appropriate
1086 message.
1087
87fcc8b9
PH
1088PH/09 Applied a patch from the Sieve maintainer which:
1089
1090 o fixes some comments
1091 o adds the (disabled) notify extension core
1092 o adds some debug output for the result of if/elsif tests
1093 o points to the current vacation draft in the documentation
1094 and documents the missing references header update
1095
1096 and most important:
1097
1098 o fixes a bug in processing the envelope test (when testing
1099 multiple envelope elements, the last element determinted the
1100 result)
1101
456682f5
PH
1102PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1103 Electronic Mail") by including:
1104
1105 Auto-submitted: auto-generated
1106
1107 in the messages that it generates (bounce messages and others, such as
1108 warnings). In the case of bounce messages for non-SMTP mesages, there was
1109 also a typo: it was using "Auto_submitted" (underscore instead of
1110 hyphen). Since every message generated by Exim is necessarily in response
1111 to another message, thes have all been changed to:
1112
1113 Auto-Submitted: auto-replied
1114
1115 in accordance with these statements in the RFC:
1116
1117 The auto-replied keyword:
1118
1119 - SHOULD be used on messages sent in direct response to another
1120 message by an automatic process,
1121
1122 - MUST NOT be used on manually-generated messages,
1123
1124 - MAY be used on Delivery Status Notifications (DSNs) and Message
1125 Disposition Notifications (MDNs),
1126
1127 - MUST NOT be used on messages generated by automatic or periodic
1128 processes, except for messages which are automatic responses to
1129 other messages.
1130
3e46c1aa
PH
1131PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1132 to the default Received: header definition.
456682f5 1133
49826d12
PH
1134PH/12 Added log selector acl_warn_skipped (default on).
1135
eba0c039
PH
1136PH/13 After a successful wildlsearch lookup, discard the values of numeric
1137 variables because (a) they are in the wrong storage pool and (b) even if
1138 they were copied, it wouldn't work properly because of the caching.
1139
a0d6ba8a
PH
1140PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1141 checking when decoding. Apparently there are clients that generate
1142 overlong encoded strings. Why am I not surprised?
1143
f0917727
PH
1144PH/15 If the first argument of "${if match_address" was not empty, but did not
1145 contain an "@" character, Exim crashed. Now it writes a panic log message
1146 and treats the condition as false.
1147
096fee00
PH
1148PH/16 In autoreply, treat an empty string for "once" the same as unset.
1149
024bd3c2
PH
1150PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1151 extension "envelope-auth". The code is finished and in agreement with
1152 other implementations, but there is no documentation so far and in fact,
1153 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1154 not changing the active code.
1155
1156 Print executed "if" and "elsif" statements when debugging is used. This
1157 helps a great deal to understand what a filter does.
1158
1159 Document more things not specified clearly in RFC3028. I had all this
1160 sorted out, when out of a sudden new issues came to my mind. Oops."
1161
df199fec
PH
1162PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1163 (Bugzilla #53).
1164
d27f1df3
PH
1165PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1166 canonical form (as documented). However, after a host name lookup from
1167 the IP address, check_host() was doing a simple string comparison with
1168 addresses acquired from the DNS when checking that the found name did
1169 have the original IP as one of its addresses. Since any found IPv6
1170 addresses are likely to be in abbreviated form, the comparison could
1171 fail. Luckily, there already exists a function for doing the comparison
1172 by converting both addresses to binary, so now that is used instead of
1173 the text comparison.
1174
96776534
PH
1175PH/20 There was another similar case to PH/19, when a complete host name was
1176 given in a host list; looking up its IP address could give an abbreviated
1177 form, whereas the current host's name might or might not be abbreviated.
1178 The same fix has been applied.
1179
5de37277 1180
9a799bc0
PH
1181Exim version 4.54
1182-----------------
1183
1184PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1185 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1186 It now does.
1187
99a4b039
PH
1188PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1189 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1190
1191PH/03 Typo: missing ".o" in src/pcre/Makefile.
1192
4b233853
PH
1193PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1194 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1195 Also, for "Auto-Submitted", treat anything other than "no" as
1196 non-personal, in accordance with RFC 3834. (Previously it treated
1197 anything starting "auto-" as non-personal.)
1198
8857ccfd
PH
1199TF/01 The control=submission/name=... option had a problem with syntax
1200 errors if the name included a slash character. The /name= option
1201 now slurps the rest of the string, so it can include any characters
1202 but it must come last in the list of options (after /sender_retain
1203 or /domain=).
1204
433a2980
PH
1205PH/05 Some modifications to the interface to the fake nameserver for the new
1206 testing suite.
1207
3e46c1aa 1208
9a799bc0 1209
e3a311ba
TK
1210Exim version 4.53
1211-----------------
1212
1213TK/01 Added the "success_on_redirect" address verification option. See
1214 NewStuff for rationale and an example.
1215
13b685f9
PH
1216PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1217
395ff96d
PH
1218PH/02 Patch to exigrep to allow it to work on syslog lines.
1219
5b68f6e4
PH
1220PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1221 fread() to skip over the body file's header line, because in Cygwin the
1222 header line is locked and is inaccessible.
1223
1ab52c69
PH
1224PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1225 co-exist for some time) to make it clear that it is the Exim ID that is
1226 referenced, not the Message-ID: header line.
1227
b07e6aa3
PH
1228PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1229 string_format() function, because snprintf() does not exist on all
1230 operating systems.
1231
254e032f
PH
1232PH/06 The use of forbid_filter_existstest now also locks out the use of the
1233 ${stat: expansion item.
1234
3af76a81
PH
1235PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1236 protocol synchronization error", to keep the pedants happy.
1237
2548ba04
PH
1238PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1239 well as for IRIX systems, when gcc is being used. See the host.c source
1240 file for comments.
1241
b6c6011d
PH
1242PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1243
cf39cf57
PH
1244PH/10 Named domain lists were not working if used in a queue_smtp_domains
1245 setting.
1246
f1513293
PH
1247PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1248 transport and to the smtp transport in LMTP mode.
1249
727549a4
PH
1250TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1251
af46795e
PH
1252PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1253 run a filter in a subprocess. This could lead to confusion in subsequent
1254 lookups in the parent process. There should also be a search_tidyup() at
1255 the end of the subprocess.
1256
d7b47fd0
PH
1257PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1258 only if the host matched helo_try_verify_hosts, which caused the
1259 verification to occur when the EHLO/HELO command was issued. The ACL just
1260 tested the remembered result. Now, if a previous verification attempt has
1261 not happened, "verify = helo" does it there and then.
1262
ee744174
JJ
1263JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1264
b582ab87
PH
1265TK/03 Fix log output including CR from clamd.
1266
41a13e0a
PH
1267PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1268 exist provoked a memory error which could cause a segfault.
1269
f625cc5a
PH
1270PH/15 Installed PCRE 6.2
1271
1272PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1273
21f7af35
PH
1274PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1275 of the problem. Specifically, suggested +O2 rather than +O1 for the
1276 HP-UX compiler.
1277
31480e42
PH
1278PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1279
2d280592
PH
1280PH/20 If a delivery was routed to a non-standard port by means of an SRV
1281 record, the port was not correctly logged when the outgoing_port log
1282 selector was set (it logged the transort's default port).
1283
7cd1141b
PH
1284PH/21 Added support for host-specific ports to manualroute, queryprogram,
1285 fallback_hosts, and "hosts" in the smtp transport.
1286
1287PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1288 host errors such as "Connection refused".
1289
750af86e
PH
1290PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1291 authentication with radiusclient 0.4.9:
1292
1293 - Error returned from rc_read_config was caught wrongly
1294 - Username/password not passed on to radius server due to wrong length.
1295
1296 The presumption is that some radiusclient API changes for 4.51/PH/17
1297 were not taken care of correctly. The code is still untested by me (my
1298 Linux distribution still has 0.3.2 of radiusclient), but it was
1299 contributed by a Radius user.
1300
1301PH/24 When doing a callout, the value of $domain wasn't set correctly when
1302 expanding the "port" option of the smtp transport.
1303
4304270b
TK
1304TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1305 while reading a MIME header. Thanks to Tom Hughes for a patch.
1306
750af86e
PH
1307PH/24 Include config.h inside local_scan.h so that configuration settings are
1308 available.
1309
64ffc24f
PH
1310PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1311 that in an ACL for RCPT (for example), you can examine exactly what was
1312 received.
1313
5dd9625b
PH
1314PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1315 commands, but it was not correctly comparing the address with the actual
1316 client host address. Thus, it would show the EHLO address in Received:
1317 header lines when this was not necessary.
1318
5591031b
PH
1319PH/27 Added the % operator to ${eval:}.
1320
ba18e66a
PH
1321PH/28 Exim tries to create and chdir to its spool directory when it starts;
1322 it should be ignoring failures (because with -C, for example, it has lost
1323 privilege). It wasn't ignoring creation failures other than "already
1324 exists".
1325
9cec981f
PH
1326PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1327 -bV or -d is used.
1328
aa2b5c79
PH
1329PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1330 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1331 too many continuations, the temporary file was not being removed, and the
1332 return code was incorrect.
aa2b5c79 1333
48a53b7f
PH
1334PH/31 Missing "BOOL" in function definition in filtertest.c.
1335
1c59d63b
PH
1336PH/32 Applied Sieve patches from the maintainer.
1337
671012da
TK
1338TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1339
1509d3a8
PH
1340PH/33 Added "verify = not_blind".
1341
1342PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1343 Local/Makefile (with some defaults set). These are used in built scripts
1344 such as exicyclog, but they have never been used in the exim_install
1345 script (though there are many overriding facilities there). I have
1346 arranged that the exim_install script now takes note of these two
1347 settings.
1348
1349PH/35 Installed configuration files for Dragonfly.
1350
2fe1a124
PH
1351PH/36 When a locally submitted message by a trusted user did not contain a
1352 From: header, and the sender address was obtained from -f or from an SMTP
1353 MAIL command, and the trusted user did not use -F to supply a sender
1354 name, $originator_name was incorrectly used when constructing a From:
1355 header. Furthermore, $originator_name was used for submission mode
1356 messages from external hosts without From: headers in a similar way,
1357 which is clearly wrong.
1358
8800895a
PH
1359PH/37 Added control=suppress_local_fixups.
1360
ccfdb010
PH
1361PH/38 When log_selector = +received_sender was set, and the addition of the
1362 sender made the log line's construction buffer exactly full, or one byte
1363 less than full, an overflow happened when the terminating "\n" was
1364 subsequently added.
1365
1130bfb0
PH
1366PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1367 when the result of a list match is failure because a DNS lookup failed.
1368
ebcb507f
PH
1369PH/40 RM_COMMAND is now used in the building process.
1370
c35e155c
PH
1371PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1372 the "build-* directories that it finds.
1373
95d1f782
PH
1374PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1375 address in a domain literal was a prefix of an interface address.
1376
fd6de02e
PH
1377PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1378 when verifying a sender address, unless rewrite_headers is false.
1379
58de37c5
PH
1380PH/44 Wrote a long comment about why errors_to addresses are verified as
1381 recipients, not senders.
1382
261cf466
TF
1383TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1384 the ratelimit ACL was added.
1385
3ee512ff
PH
1386PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1387
e08c430f
PH
1388PH/46 Added extra information about PostgreSQL errors to the error string.
1389
bef5a11f
PH
1390PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1391 avoiding the need to install special zones in a real server. This is
1392 backwards compatible; if it can't find the fake resolver, it drops back.
1393 Thus, both old and new test suites can be run.
1394
7546de58
TF
1395TF/02 Added util/ratelimit.pl
1396
e5d5a95f
TF
1397TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1398 clock is set back in time.
1399
2e88a017
TF
1400TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1401 Candler <B.Candler@pobox.com>.
1402
a5f65aa4
TF
1403TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1404 OK for addresses that are the result of redirections.
1405
e7726cbf
PH
1406PH/48 A number of further additions for the benefit of the new test suite,
1407 including a fake gethostbyname() that interfaces to the fake DNS resolver
1408 (see PH/47 above).
1409
a7fdad5b
TF
1410TF/06 The fix for widen_domains has also been applied to qualify_single and
1411 search_parents which are the other dnslookup options that can cause
1412 header rewrites.
1413
6af56900
PH
1414PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1415 type ("H").
1416
0925ede6
PH
1417PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1418
66afa403
TF
1419TF/07 Exim produced the error message "an SRV record indicated no SMTP
1420 service" if it encountered an MX record with an empty target hostname.
1421 The message is now "an MX or SRV record indicated no SMTP service".
1422
0154e85a
TF
1423TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1424 if the DNS of the sending site is misconfigured. This is quite a
1425 common situation. This change restores the behaviour of treating a
1426 helo verification defer as a failure.
1427
16f12c76
PH
1428PH/51 If self=fail was set on a router, the bounce message did not include the
1429 actual error message.
1430
bbe902f0 1431
e5a9dba6
PH
1432Exim version 4.52
1433-----------------
1434
1435TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1436
22c3b60b
PH
1437PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1438 command itself ended in error, the underlying message about the transport
1439 filter timeout was being overwritten with the pipe command error. Now the
1440 underlying error message should be appended to the second error message.
1441
06a9b4b5
PH
1442TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1443
c1ac6996
PH
1444PH/02 Reduce the amount of output that "make" produces by default. Full output
1445 can still be requested.
1446
9c7a242c
PH
1447PH/03 The warning log line about a condition test deferring for a "warn" verb
1448 was being output only once per connection, rather than after each
1449 occurrence (because it was using the same function as for successful
1450 "warn" verbs). This seems wrong, so I have changed it.
1451
87ba3f5f
PH
1452TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1453 it should not have, which might have caused a crash in the right
1454 circumstances, but probably never did.
1455
1456PH/04 Installed a modified version of Tony Finch's patch to make submission
1457 mode fix the return path as well as the Sender: header line, and to
1458 add a /name= option so that you can make the user's friendly name appear
1459 in the header line.
1460
29aba418
TF
1461TF/03 Added the control = fakedefer ACL modifier.
1462
fe0dab11
TF
1463TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1464 Mark Lowes for thorough testing.
870f6ba8 1465
11d337a4
TK
1466TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1467
1468TK/03 Merged latest SRS patch from Miles Wilton.
1469
415c8f3b
PH
1470PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1471 with the definition in sysexits.h (which is #included earlier).
1472 Fortunately, Exim does not actually use EX_OK. The code used to try to
1473 preserve the sysexits.h value, by assumimg that macro definitions were
1474 scanned for macro replacements. I have been disabused of this notion,
1475 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1476
958541e9
PH
1477PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1478 in the smtp transport. When a block could not be written in a single
1479 write() function, the timeout was being re-applied to each part-write.
1480 This seems wrong - if the receiver was accepting one byte at a time it
1481 would take for ever. The timeout is now adjusted when this happens. It
1482 doesn't have to be particularly precise.
1483
c206415f
TK
1484TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1485 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1486
2a4be8f9
PH
1487PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1488 without a domain if the check to <postmaster@domain> fails.
1489
1cba11c5
SC
1490SC/01 Eximstats: added -xls and the ability to specify output files
1491 (patch written by Frank Heydlauf).
1492
1493SC/02 Eximstats: use FileHandles for outputing results.
1494
1495SC/03 Eximstats: allow any combination of xls, txt, and html output.
1496
1497SC/04 Eximstats: fixed display of large numbers with -nvr option
1498
1499SC/05 Eximstats: fixed merging of reports with empty tables.
1500
1501SC/06 Eximstats: added the -include_original_destination flag
1502
1503SC/07 Eximstats: removed tabs and trailing whitespace.
1504
1005d00e
TK
1505TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1506
1507TK/06 MBOX spool code: Add real "From " MBOX separator line
1508 so the .eml file is really in mbox format (even though
1509 most programs do not really care). Patch from Alex Miller.
1510
1511TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1512 The latter is generated from $received_to and is only set if the
1513 message has one envelope recipient. SA can use these headers,
1514 obviously out-of-the-box. Patch from Alex Miller.
1515
9b4768fa
PH
1516PH/08 The ${def test on a variable was returning false if the variable's
1517 value was "0", contrary to what the specification has always said!
1518 The result should be true unless the variable is empty.
1519
1520PH/09 The syntax error of a character other than { following "${if
1521 def:variable_name" (after optional whitespace) was not being diagnosed.
1522 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1523 accidental colon was present, for example, could give incorrect results.
1524
0d7eb84a
PH
1525PH/10 Tidied the code in a number of places where the st_size field of a stat()
1526 result is used (not including appendfile, where other changes are about
1527 to be made).
1528
1529PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1530 This involved changing a lot of size variables from int to off_t. It
1531 should work with maildirs and everything.
1532
40727bee
TK
1533TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1534 spamd dying while we are connected to it.
1535
554d2369
TF
1536TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1537 <jgh@wizmail.org>
1538
1f922db1
PH
1539PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1540 function for BDB 4.3.
1541
ef213c3b
PH
1542PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1543
8ac170f3
PH
1544PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1545 the sources for PCRE have been re-arranged and more files are now
1546 involved.
1547
b1c749bb
PH
1548PH/15 The code I had for printing potentially long long variables in PH/11
1549 above was not the best (it lost precision). The length of off_t variables
1550 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1551 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1552 to be "long long int" or "long int". This is needed for the internal
1553 formatting function string_vformat().
b1c749bb 1554
4aac9b49
PH
1555PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1556 the configuration file to be ":syslog", then the script "guesses" where
1557 the logs files are, rather than using the compiled in default. In our
1558 case the guess is not the same as the compiled default, so the script
1559 suddenly stopped working when I started to use syslog. The patch checks
1560 to see if log_file_path is "". If so, it attempts to read it from exim
1561 with no configuration file to get the compiled in version, before it
1562 falls back to the previous guessing code."
1563
294520c8
TK
1564TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1565 implementing BATV in an Exim configuration. See NewStuff for the gory
1566 details.
1567
5bd022fe
PH
1568PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1569 Makefile that are specific to HP-UX.
1570
90e9ce59
PH
1571PH/18 If the "use_postmaster" option was set for a recipient callout together
1572 with the "random" option, the postmaster address was used as the MAIL
1573 FROM address for the random test, but not for the subsequent recipient
1574 test. It is now used for both.
1575
5ea81592
PH
1576PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1577 patch removes a few documentation additions to RFC 3028, because the
1578 latest draft now contains them. It adds the new en;ascii-case comparator
1579 and a new error check for 8bit text in MIME parts. Comparator and
1580 require names are now matched exactly. I enabled the subaddress
1581 extension, but it is not well tested yet (read: it works for me)."
1582
c6c2dc1d
PH
1583PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1584 rework some of the code of TK/09 above to avoid the hardwired use of
1585 "%lld" and "long long". Replaced the call to snprintf() with a call to
1586 string_vformat().
1587
fffffe4c
PH
1588PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1589 records point to non-existent hosts", "retry timeout exceeded", and
1590 "retry time not reached for any host after a long failure period".
ca02eafb 1591
9a26b6b2
PH
1592PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1593 experimental DomainKeys support:
1594
1595 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1596 (2) On an error such as an illegally used "control", the wrong name for
1597 the control was given.
1598
1599 These problems did NOT occur unless DomainKeys support was compiled.
1600
4aee0225
PH
1601PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1602
32d668a5
PH
1603PH/24 Added ${if match_ip condition.
1604
8187c3f3
PH
1605PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1606 databases so that it will be absolutely obvious if a crash occurs in the
1607 DB library. This is a regular occurrence (often caused by mis-matched
1608 db.h files).
1609
ff790e47 1610PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1611 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1612 picked up on a user's system that detects such things. There doesn't seem
1613 to be a gcc warning option for this - only an attribute that has to be
1614 put on the function's prototype. It seems that in Fedora Core 4 they have
1615 set this on a number of new functions. No doubt there will be more in due
1616 course.
ff790e47 1617
5417f6d1
PH
1618PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1619 specify a transport. However, if an address that was verified by such a
1620 router was the subject of a callout, Exim crashed because it tried to
1621 read the rcpt_include_affixes from the non-existent transport. Now it
1622 just assumes that the setting of that option is false. This bug was
1623 introduced by 4.51/PH/31.
1624
59cf8544
PH
1625PH/28 Changed -d+all to exclude +memory, because that information is very
1626 rarely of interest, but it makes the output a lot bigger. People tend to
1627 do -d+all out of habit.
1628
e7ad8a65
PH
1629PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1630 code in os-type was giving problems when libc.so lives in lib64, like on
1631 x86_64 Fedora Core.
1632
ade42478
PH
1633PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1634 aren't the modern standard, and it seems that some systems' include files
1635 don't always have them. Exim was already checking for some of the newer
1636 ones like T_AAAA, and defining it itself. I've added checks for all the
1637 record types that Exim uses.
1638
182ad5cf
PH
1639PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1640 not automatically generating a new one, as it is supposed to. This
1641 prevented TLS from working. If the file did exist, but contained invalid
1642 data, a new version was generated, as expected. It was only the case of a
1643 non-existent file that was broken.
1644
b0d9fc80
TK
1645TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1646 with a change in libdomainkeys > 0.64.
1647
1648TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1649 from DNS. If the selector record carries the flag, it now has
1650 precedence over the domain-wide flag.
1651
1652TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1653
47c7a64a
PH
1654PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1655 the use of a port name that isn't defined in /etc/services) occurred, the
1656 message was deferred as in a normal delivery, and thus remained on the
1657 spool, instead of being failed because of the mua_wrapper setting. This
1658 is now fixed, and I tidied up some of the mua_wrapper messages at the
1659 same time.
1660
a388bce4
SC
1661SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1662 the messages in a hash of arrays rather than using individual hashes.
1663 This is a bit cleaner and results in dramatic memory savings, albeit
1664 at a slight CPU cost.
1665
1666SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1667 as requested by Marc Sherman.
1668
1669SC/10 Eximstats: added histograms for user specified patterns as requested
1670 by Marc Sherman.
1671
0793e4ed
SC
1672SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1673
c58b88df
PH
1674PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1675 fopen() in the content-scanning modules that did not already have it.
1676
e7ad8a65 1677
7982096b
PH
1678Exim version 4.51
1679-----------------
1680
1a46a8c5
PH
1681TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1682 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1683
2f079f46 1684TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1685
1686TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1687
1688PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1689 to test Sieve filters that use "vacation".
1690
1691PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1692 that changes the way the GnuTLS parameters are stored in the cache file.
1693 The new format can be generated externally. For backward compatibility,
1694 if the data in the cache doesn't make sense, Exim assumes it has read an
1695 old-format file, and it generates new data and writes a new file. This
1696 means that you can't go back to an older release without removing the
1697 file.
1698
1699PH/03 A redirect router that has both "unseen" and "one_time" set does not
1700 work if there are any delivery delays because "one_time" forces the
1701 parent to be marked "delivered", so its unseen clone is never tried
1702 again. For this reason, Exim now forbids the simultaneous setting of
1703 these two options.
1704
1705PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1706 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1707 entry if you want to know the details. The fix, however, neglected to
1708 consider the case when local delivery batching is involved. The test for
1709 "previously delivered" was not happening when checking to see if an
1710 address could be batched with a previous (undelivered) one; under
1711 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1712 address.
1a46a8c5
PH
1713
1714PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1715 in its include files, and this causes problems building Exim.
1716
1717PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1718 header_syntax) but Exim was just ignoring anything given after a slash.
1719 In particular, this caused confusion with an attempt to use "verify =
1720 reverse_host_lookup/defer_ok". An error is now given when options are
1721 supplied for verify items that do not have them. (Maybe reverse_host_
1722 lookup should have a defer_ok option, but that's a different point.)
1723
1724PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1725 defined by RFC 821) to 2048, because there were problems with some AUTH
1726 commands, and RFC 1869 says the size should be increased for extended
1727 SMTP commands that take arguments.
1728
1729PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1730 Finch).
1731
1732PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1733 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1734
49c2d5ea
PH
1735PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1736 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1737 whatever). Otherwise the password may appear in the log. Following change
1738 PH/42 below, there is no longer a chance of it appearing in a bounce
1739 message.
49c2d5ea 1740
bf759a8b
PH
1741PH/11 Installed exipick version 20050225.0 from John Jetmore.
1742
83364d30
PH
1743PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1744 of its addresses was ever tried. (Bugzilla bug #2.)
1745
7999bbd7
PH
1746PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1747 the result incorrectly in the debug output. (It correctly added a newline
1748 to what was transported.)
1749
7dbf77c9
PH
1750TF/01 Added $received_time.
1751
74e0617f
PH
1752PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1753 commented out examples of how to interface to a virus scanner and to
1754 SpamAssassin. Also added commented examples of av_scanner and
1755 spamd_address settings.
1756
2f079f46
PH
1757PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1758 and controls are allowed in which ACLs. There were a couple of minor
1759 errors. Some of the entries in the conditions table (which is a table of
1760 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1761 negation of where the condition IS allowed.
1762
8c841523
PH
1763PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1764
7766a4f0
PH
1765PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1766 header file does not have a version number, so I've had to invent a new
1767 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1768 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1769 radiusclient), but it was contributed by a Radius user.
1770
8b417f2c
PH
1771PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1772 files or directories, for OpenSSL.
1773
901f42cb
PH
1774PH/19 When an Exim process that is running as root has to create an Exim log
1775 file, it does so in a subprocess that runs as exim:exim so as to get the
1776 ownership right at creation (otherwise, other Exim processes might see
1777 the file with the wrong ownership). There was no test for failure of this
1778 fork() call, which would lead to the process getting stuck as it waited
1779 for a non-existent subprocess. Forks do occasionally fail when resources
1780 run out. I reviewed all the other calls to fork(); they all seem to check
1781 for failure.
1782
f9b9210e
PH
1783PH/20 When checking for unexpected SMTP input at connect time (before writing
1784 the banner), Exim was not dealing correctly with a non-positive return
1785 from the read() function. If the client had disconnected by this time,
1786 the result was a log entry for a synchronization error with an empty
1787 string after "input=" when read() returned zero. If read() returned -1
1788 (an event I could not check), uninitialized data bytes were printed.
1789 There were reports of junk text (parts of files, etc) appearing after
1790 "input=".
1791
54cdb463
PH
1792PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1793
cf00dad6
PH
1794PH/22 Added support for macro redefinition, and (re)definition in between
1795 driver and ACL definitions.
1796
acb1b346
PH
1797PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1798 forgetting to use the resulting value; it was using the unexpanded value.
1799
c5ddb310
PH
1800PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1801 hadn't been configured. The fix is from Juergen Kreileder, who
1802 understands it better than I do:
1803
1804 "Here's what I see happening with three configured cyrus_sasl
1805 authenticators configured (plain, login, cram-md5):
1806
1807 On startup auth_cyrus_sasl_init() gets called for each of these.
1808 This means three calls to sasl_listmech() without a specified mech_list.
1809 => SASL tests which mechs of all available mechs actually work
1810 => three warnings about OTP not working
1811 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1812
1813 With the patch, sasl_listmech() also gets called three times. But now
1814 SASL's mech_list option is set to the server_mech specified in the the
1815 authenticator. Or in other words, the answer from sasl_listmech()
1816 gets limited to just the mech you're testing for (which is different
1817 for each call.)
1818 => the return list contains just 'plain' or 'login', 'cram-md5' or
1819 nothing depending on the value of ob->server_mech.
1820
1821 I've just tested the patch: Authentication still works fine,
1822 unavailable mechs specified in the exim configuration are still
1823 caught, and the auth.log warnings about OTP are gone."
1824
31619da6
PH
1825PH/25 When debugging is enabled, the contents of the command line are added
1826 to the debugging output, even when log_selector=+arguments is not
1827 specified.
1828
bebaf0fc
PH
1829PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1830 answer is "GNU", and only if the return is "GNU/something" is the answer
1831 "Linux".
1832
475fe28a
PH
1833PH/27 $acl_verify_message is now set immediately after the failure of a
1834 verification in an ACL, and so is available in subsequent modifiers. In
1835 particular, the message can be preserved by coding like this:
1836
1837 warn !verify = sender
1838 set acl_m0 = $acl_verify_message
1839
1840 Previously, $acl_verify_message was set only while expanding "message"
1841 and "log_message" when a very denied access.
1842
7e8bec7a
PH
1843PH/28 Modified OS/os.c-Linux with
1844
1845 -#ifndef OS_LOAD_AVERAGE
1846 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1847
1848 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1849 nomenclature these days.)
1850
e4a89c47
PH
1851PH/29 Installed patch from the Sieve maintainer that adds the options
1852 sieve_useraddress and sieve_subaddress to the redirect router.
1853
5ca2a9a1
PH
1854PH/30 In these circumstances:
1855 . Two addresses routed to the same list of hosts;
1856 . First host does not offer TLS;
1857 . First host accepts first address;
1858 . First host gives temporary error to second address;
1859 . Second host offers TLS and a TLS session is established;
1860 . Second host accepts second address.
1861 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1862 and peerdn, if requested) that were in fact used only for the second
1863 address.
7e8bec7a 1864
c688b954
PH
1865PH/31 When doing a callout as part of verifying an address, Exim was not paying
1866 attention to any local part prefix or suffix that was matched by the
1867 router that accepted the address. It now behaves in the same way as it
1868 does for delivery: the affixes are removed from the local part unless
1869 rcpt_include_affixes is set on the transport.
1870
fed77020
PH
1871PH/32 Add the sender address, as F=<...>, to the log line when logging a
1872 timeout during the DATA phase of an incoming message.
1873
7fe1560f
PH
1874PH/33 Sieve envelope tests were broken for match types other than :is. I have
1875 applied a patch sanctioned by the Sieve maintainer.
c688b954 1876
ebb6e6d5
PH
1877PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1878 the uid or gid is negative. A case of a negative gid caused this to be
1879 noticed. The fix allows for either to be negative.
1880
9c4e8f60
PH
1881PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1882 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1883 overlooked.
1884
1885PH/36 The change PH/12 above was broken. Fixed it.
1886
d7174846
PH
1887PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1888 the grounds that routing the same address twice would always produce the
1889 same answer. This might have been true once, but it is certainly no
1890 longer true now. Routing a child address may depend on the previous
1891 routing that produced that child. Some complicated redirection strategies
1892 went wrong when messages had multiple recipients, and made Exim's
1893 behaviour dependent on the order in which the addresses were given.
1894
1895 I have moved the duplicate checking until after the routing is complete.
1896 Exim scans the addresses that are assigned to local and remote
1897 transports, and removes any duplicates. This means that more work will be
1898 done, as duplicates will always all be routed, but duplicates are
1899 presumably rare, so I don't expect this is of any significance.
1900
1901 For deliveries to pipes, files, and autoreplies, the duplicate checking
1902 still happens during the routing process, since they are not going to be
1903 routed further.
1904
cfe75fc3
PH
1905PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1906 It corrects a timeout issue with spamd. This is Ian's comment: "The
1907 background is that sometimes spamd either never reads data from a
1908 connection it has accepted, or it never writes response data. The exiscan
1909 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1910 blindly assumes that writes won't block so it may never time out."
1911
be22d70e
PH
1912PH/39 Allow G after quota size as well as K and M.
1913
0612b098
PH
1914PH/40 The value set for $authenticated_id in an authenticator may not contain
1915 binary zeroes or newlines because the value is written to log lines and
1916 to spool files. There was no check on this. Now the value is run through
1917 the string_printing() function so that such characters are converted to
1918 printable escape sequences.
1919
2e0c1448
PH
1920PH/41 $message_linecount is a new variable that contains the total number of
1921 lines in the message. Compare $body_linecount, which is the count for the
1922 body only.
1923
447d236c
PH
1924PH/42 Exim no longer gives details of delivery errors for specific addresses in
1925 bounce and delay warning messages, except in certain special cases, which
1926 are as follows:
1927
1928 (a) An SMTP error message from a remote host;
1929 (b) A message specified in a :fail: redirection;
1930 (c) A message specified in a "fail" command in a system filter;
1931 (d) A message specified in a FAIL return from the queryprogram router;
1932 (e) A message specified by the cannot_route_message router option.
1933
1934 In these cases only, Exim does include the error details in bounce and
1935 warning messages. There are also a few cases where bland messages such
1936 as "unrouteable address" or "local delivery error" are given.
1937
d20976dc
PH
1938PH/43 $value is now also set for the "else" part of a ${run expansion.
1939
f656d135
PH
1940PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1941 being worked on, but at least Exim now implements the latest version to
1942 play with."
1943
2e2a30b4
PH
1944PH/45 In a pipe transport, although a timeout while waiting for the pipe
1945 process to complete was treated as a delivery failure, a timeout while
1946 writing the message to the pipe was logged, but erroneously treated as a
1947 successful delivery. Such timeouts include transport filter timeouts. For
1948 consistency with the overall process timeout, these timeouts are now
1949 treated as errors, giving rise to delivery failures by default. However,
1950 there is now a new Boolean option for the pipe transport called
1951 timeout_defer, which, if set TRUE, converts the failures into defers for
1952 both kinds of timeout. A transport filter timeout is now identified in
1953 the log output.
1954
9176e9f0
PH
1955PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1956 systems where "make" and "gmake" are different, calling "gmake" at top
1957 level broke things. I've arranged for the value of $(MAKE) to be passed
1958 from the Makefile to this script so that it can call the same version of
1959 "make".
1960
7982096b 1961
bbe902f0
PH
1962A note about Exim versions 4.44 and 4.50
1963----------------------------------------
1964
1965Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1966changes of various kinds. As a consequence, a big documentation update was
1967needed. This delayed the release for rather longer than seemed good, especially
1968in the light of a couple of (minor) security issues. Therefore, the changes
1969that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1970release. So 4.44 and 4.50 are in effect two different branches that both start
1971from 4.43.
1972
1973I have left the 4.50 change log unchanged; it contains all the changes since
19744.43. The change log for 4.44 is below; many of its items are identical to
1975those for 4.50. This seems to be the most sensible way to preserve the
1976historical information.
1977
1978
f7b63901 1979Exim version 4.50
495ae4b0
PH
1980-----------------
1981
5fe762f6
PH
1982 1. Minor wording change to the doc/README.SIEVE file.
1983
139059f6 1984 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1985 computation of the current number of files was incorrect.
495ae4b0 1986
7086e875
PH
1987 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1988 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1989 place.
1990
35af9f61
PH
1991 4. Give more explanation in the error message when the command for a transport
1992 filter fails to execute.
1993
b668c215
PH
1994 5. There are several places where Exim runs a non-Exim command in a
1995 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1996 was being done only for the command run by the queryprogram router. It is
1997 now done for all such subprocesses. The other cases are: ${run, transport
1998 filters, and the commands run by the lmtp and pipe transports.
1999
a494b1e1
PH
2000 6. Added CONFIGURE_GROUP build-time option.
2001
2002 7. Some older OS have a limit of 256 on the maximum number of file
2003 descriptors. Exim was using setrlimit() to set 1000 as a large value
2004 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2005 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2006
c5fcb476
PH
2007 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2008 was an oversight, and furthermore, ever since the addition of extra
2009 controls (e.g. 4.43/32), the checks on when to allow different forms of
2010 "control" were broken. There should now be diagnostics for all cases when a
2011 control that does not make sense is encountered.
2012
69358f02
PH
2013 9. Added the /retain_sender option to "control=submission".
2014
5be20824
PH
201510. $recipients is now available in the predata ACL (oversight).
2016
eb2c0248
PH
201711. Tidy the search cache before the fork to do a delivery from a message
2018 received from the command line. Otherwise the child will trigger a lookup
2019 failure and thereby defer the delivery if it tries to use (for example) a
2020 cached ldap connection that the parent has called unbind on.
2021
2a3eea10
PH
202212. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2023 of $address_data from the recipient verification was clobbered by the
2024 sender verification.
2025
202613. The value of address_data from a sender verification is now available in
2027 $sender_address_data in subsequent conditions in the ACL statement.
2028
23c7ff99
PH
202914. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2030
4deaf07d
PH
203115. Added a new option "connect=<time>" to callout options, to set a different
2032 connection timeout.
2033
926e1192
PH
203416. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2035 was its contents. (It was OK if the option was not defined at all.)
2036
650edc6f
PH
203717. A "Completed" log line is now written for messages that are removed from
2038 the spool by the -Mrm option.
2039
2c7db3f5
PH
204018. New variables $sender_verify_failure and $recipient_verify_failure contain
2041 information about exactly what failed.
2042
3d235903
PH
204319. Added -dd to debug only the daemon process.
2044
7c7ad977
PH
204520. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2046 handles timeouts, both on the server side and network timeouts. Renamed the
2047 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2048
981756db
PH
204921. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2050 It is now set to "smtps".
2051
d4eb88df
PH
205222. $host_address is now set to the target address during the checking of
2053 ignore_target_hosts.
2054
205523. When checking ignore_target_hosts for an ipliteral router, no host name was
2056 being passed; this would have caused $sender_host_name to have been used if
2057 matching the list had actually called for a host name (not very likely,
2058 since this list is usually IP addresses). A host name is now passed as
2059 "[x.x.x.x]".
2060
7d468ab8
PH
206124. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2062 code that specifies a non-restarting handler (typically sigaction() in
2063 modern systems) in an attempt to fix a rare and obscure crash bug.
2064
206525. Narrowed the window for a race in the daemon that could cause it to ignore
2066 SIGCHLD signals. This is not a major problem, because they are used only to
2067 wake it up if nothing else does.
2068
62c0818f
PH
206926. A malformed maildirsize file could cause Exim to calculate negative values
2070 for the mailbox size or file count. Odd effects could occur as a result.
2071 The maildirsize information is now recalculated if the size or filecount
2072 end up negative.
2073
26034054
PH
207427. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2075 support for a long time. Removed HAVE_SYS_VFS_H.
2076
af66f652
PH
207728. Installed the latest version of exipick from John Jetmore.
2078
90af77f4
PH
207929. In an address list, if the pattern was not a regular expression, an empty
2080 subject address (from a bounce message) matched only if the pattern was an
2081 empty string. Non-empty patterns were not even tested. This was the wrong
2082 because it is perfectly reasonable to use an empty address as part of a
2083 database query. An empty address is now tested by patterns that are
2084 lookups. However, all the other forms of pattern expect the subject to
2085 contain a local part and a domain, and therefore, for them, an empty
2086 address still always fails if the pattern is not itself empty.
2087
d8ef3577
PH
208830. Exim went into a mad DNS loop when attempting to do a callout where the
2089 host was specified on an smtp transport, and looking it up yielded more
2090 than one IP address.
2091
5cb8cbc6
PH
209231. Re-factored the code for checking spool and log partition space into a
2093 function that finds that data and another that does the check. The former
2094 is then used to implement four new variables: $spool_space, $log_space,
2095 $spool_inodes, and $log_inodes.
2096
14702f5b
PH
209732. The RFC2047 encoding function was originally intended for short strings
2098 such as real names; it was not keeping to the 75-character limit for
2099 encoded words that the RFC imposes. It now respects the limit, and
2100 generates multiple encoded words if necessary. To be on the safe side, I
2101 have increased the buffer size for the ${rfc2047: expansion operator from
2102 1024 to 2048 bytes.
2103
063b1e99
PH
210433. It is now permitted to omit both strings after an "if" condition; if the
2105 condition is true, the result is "true". As before, when the second string
2106 is omitted, a false condition yields an empty string. This makes it less
2107 cumbersome to write custom ACL and router conditions.
2108
652e1b65
PH
210934. Failure to deliver a bounce message always caused it to be frozen, even if
2110 there was an errors_to setting on the router. The errors_to setting is now
2111 respected.
2112
6f0c9a4f
PH
211335. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2114 canonical form (fully expanded) before being placed in
2115 $sender_host_address.
2116
33397d19
PH
211736. The table in the code that translates DNS record types into text (T_A to
2118 "A" for instance) was missing entries for NS and CNAME. It is just possible
2119 that this could have caused confusion if both these types were looked up
2120 for the same domain, because the text type is used as part of Exim's
2121 per-process caching. But the chance of anyone hitting this buglet seems
2122 very small.
2123
7bb56e1f
PH
212437. The dnsdb lookup has been extended in a number of ways.
2125
2126 (1) There is a new type, "zns", which walks up the domain tree until it
2127 finds some nameserver records. It should be used with care.
2128
ea3bc19b
PH
2129 (2) There is a new type, "mxh", which is like "mx" except that it returns
2130 just the host names, not the priorities.
2131
2132 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2133 looked up. The behaviour when one of the lookups defers can be
2134 controlled by a keyword.
7bb56e1f 2135
ea3bc19b 2136 (4) It is now possible to specify the separator character for use when
7bb56e1f 2137 multiple records are returned.
33397d19 2138
0bcb2a0e
PH
213938. The dnslists ACL condition has been extended: it is now possible to supply
2140 a list of IP addresses and/or domains to be looked up in a particular DNS
2141 domain.
2142
2ac0e484
PH
214339. Added log_selector=+queue_time_overall.
2144
4e1fde53
PH
214540. When running the queue in the test harness, wait just a tad after forking a
2146 delivery process, to get repeatability of debugging output.
2147
de365ded
PH
214841. Include certificate and key file names in error message when GnuTLS fails
2149 to set them up, because the GnuTLS error message doesn't include the name
2150 of the failing file when there is a problem reading it.
2151
f05da2e8
PH
215242. Allow both -bf and -bF in the same test run.
2153
d6453af2
PH
215443. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2155
f7b63901
PH
215644. The "Exiscan patch" is now merged into the mainline Exim source.
2157
215845. Sometimes the final signoff response after QUIT could fail to get
2159 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2160 < 0 before doing a fflush(). This bug looks as though it goes back to the
2161 introduction of TLS in release 3.20, but "sometimes" must have been rare
2162 because the tests only now provoked it.
2163
a444213a
PH
216446. Reset the locale to "C" after calling embedded Perl, in case it was changed
2165 (this can affect the format of dates).
2166
0ec020ea
PH
216747. exim_tidydb, when checking for the continued existence of a message for
2168 which it has found a message-specific retry record, was not finding
2169 messages that were in split spool directories. Consequently, it was
2170 deleting retry records that should have stayed in existence.
2171
b1206957
PH
217248. Steve fixed some bugs in eximstats.
2173
217449. The SPA authentication driver was not abandoning authentication and moving
2175 on to the next authenticator when an expansion was forced to fail,
2176 contradicting the general specification for all authenticators. Instead it
2177 was generating a temporary error. It now behaves as specified.
2178
26dd5a95
PH
217950. The default ordering of permitted cipher suites for GnuTLS was pessimal
2180 (the order specifies the preference for clients). The order is now AES256,
2181 AES128, 3DES, ARCFOUR128.
2182
343b2385
PH
218351. Small patch to Sieve code - explicitly set From: when generating an
2184 autoreply.
2185
1c5466b9
PH
218652. Exim crashed if a remote delivery caused a very long error message to be
2187 recorded - for instance if somebody sent an entire SpamAssassin report back
2188 as a large number of 550 error lines. This bug was coincidentally fixed by
2189 increasing the size of one of Exim's internal buffers (big_buffer) that
2190 happened as part of the Exiscan merge. However, to be on the safe side, I
2191 have made the code more robust (and fixed the comments that describe what
2192 is going on).
2193
55ee9ee3
PH
219453. Now that there can be additional text after "Completed" in log lines (if
2195 the queue_time_overall log selector is set), a one-byte patch to exigrep
2196 was needed to allow it to recognize "Completed" as not the last thing in
2197 the line.
2198
d38f8232
PH
219954. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2200 patch that reportedly fixes this has been added. I am not expert enough to
2201 create a test for it. This is what the patch creator wrote:
2202
2203 "I found a little strange behaviour of ldap code when working with
2204 Windows 2003 AD Domain, where users was placed in more than one
2205 Organization Units. When I tried to give exim partial DN, the exit code
2206 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2207 But simultaneously result of request was absolutely normal ldap result,
2208 so I produce this patch..."
2209
3295e65b
PH
2210 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2211 REFERENCE, so I have modified the code to exclude the patch when that macro
2212 is not defined.
2213
7102e136
PH
221455. Some experimental protocols are using DNS PTR records for new purposes. The
2215 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2216 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2217 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2218 CAN-2005-0021
7102e136 2219
3ca0ba97
PH
222056. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2221
c2bcbe20
PH
222257. Double the size of the debug message buffer (to 2048) so that more of very
2223 long debug lines gets shown.
2224
18ce445d
PH
222558. The exicyclog utility now does better if the number of log files to keep
2226 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2227
1f5b4c3d
PH
222859. Two changes related to the smtp_active_hostname option:
2229
2230 (1) $smtp_active_hostname is now available as a variable.
2231 (2) The default for smtp_banner uses $smtp_active_hostname instead
2232 of $primary_hostname.
2233
b975ba52
PH
223460. The host_aton() function is supposed to be passed a string that is known
2235 to be a valid IP address. However, in the case of IPv6 addresses, it was
2236 not checking this. This is a hostage to fortune. Exim now panics and dies
2237 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2238 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2239 components; fortuitously, this particular loophole had already been fixed
2240 by change 4.50/55 above.
2241
2242 If there are any other similar loopholes, the new check in host_aton()
2243 itself should stop them being exploited. The report I received stated that
2244 data on the command line could provoke the exploit when Exim was running as
2245 exim, but did not say which command line option was involved. All I could
2246 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2247 running as the user.
ea3a6f44 2248 CAN-2005-0021
85b87bc2
PH
2249
225061. There was a buffer overflow vulnerability in the SPA authentication code
2251 (which came originally from the Samba project). I have added a test to the
2252 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2253 CAN-2005-0022
b975ba52 2254
17ffcae7
PH
225562. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2256 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2257
d95f9fdb
PH
225863. The daemon start-up calls getloadavg() while still root for those OS that
2259 need the first call to be done as root, but it missed one case: when
2260 deliver_queue_load_max is set with deliver_drop_privilege. This is
2261 necessary for the benefit of the queue runner, because there is no re-exec
2262 when deliver_drop_privilege is set.
2263
86b8287f
PH
226464. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2265 This has been fixed.
2266
60dc5e56
PH
226765. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2268 was in use, was not putting the data itself into the right store pool;
2269 consequently, it could be overwritten for a subsequent message in the same
2270 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2271 the caching.)
2272
533244af
PH
227366. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2274
a5a28604
PH
227567. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2276 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2277 the function were treating the return as a boolean value, which happened to
2278 work because 0=false and not-0=true, but is not correct code.
2279
7e634d24
PH
228068. The host_aton() function was not handling scoped IPv6 addresses (those
2281 with, for example, "%eth0" on the end) correctly.
2282
3e11c26b
PH
228369. Fixed some compiler warnings in acl.c for the bitmaps specified with
2284 negated items (that is, ~something) in unsigned ints. Some compilers
2285 apparently mutter when there is no cast.
2286
6729cf78
PH
228770. If an address verification called from an ACL failed, and did not produce a
2288 user-specific message (i.e. there was only a "system" message), nothing was
2289 put in $acl_verify_message. In this situation, it now puts the system
2290 message there.
2291
00f00ca5
PH
229271. Change 4.23/11 added synchronization checking at the start of an SMTP
2293 session; change 4.31/43 added the unwanted input to the log line - except
2294 that it did not do this in the start of session case. It now does.
2295
c9bdd01c
PH
229672. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2297 This is wrong and can cause the other end to generate a synchronization
2298 error if it is another Exim or anything else that does the synchronization
2299 check. A QUIT command is no longer sent after a timeout.
2300
d43194df
PH
230173. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2302 during host lookups.
2303
fe5b5d0b
PH
230474. The defer_ok option of callout verification was not working if it was used
2305 when verifying addresses in header lines, that is, for this case:
2306
2307 verify = header_sender/callout=defer_ok
2308
76a2d7ba
PH
230975. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2310 those file descriptors could be used for SMTP connections. If anything
2311 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2312 could be sent to the SMTP client, causing chaos. The daemon now opens
2313 stdin, stdout, and stderr to /dev/null when it puts itself into the
2314 background.
2315
231676. Arrange for output from Perl's "warn" command to be written to Exim's main
2317 log by default. The user can override this with suitable Perl magic.
2318
04f7d5b9
PH
231977. The use of log_message on a "discard" ACL verb, which is supposed to add to
2320 the log message when discard triggers, was not working for the DATA ACL or
2321 for the non-SMTP ACL.
2322
bc60667e
PH
232378. Error message wording change in sieve.c.
2324
bb6e88ff
PH
232579. If smtp_accept_max_per_host was set, the number of connections could be
2326 restricted to fewer than expected, because the daemon was trying to set up
2327 a new connection before checking whether the processes handling previous
2328 connections had finished. The check for completed processes is now done
2329 earlier. On busy systems, this bug wouldn't be noticed because something
2330 else would have woken the daemon, and it would have reaped the completed
2331 process earlier.
2332
1e70f85b
PH
233380. If a message was submitted locally by a user whose login name contained one
2334 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2335 It caused a spool format error. I have fixed the spool reading code. A
2336 related problem was that the "from" clause in the Received: line became
2337 illegal because of the space(s). It is now covered by ${quote_local_part.
2338
233981. Included the latest eximstats from Steve (adds average sizes to HTML Top
2340 tables).
2341
4e01f9d6
PH
234282. Updated OS/Makefile-AIX as per message from Mike Meredith.
2343
1ee1cef2
PH
234483. Patch from Sieve maintainer to fix unterminated string problem in
2345 "vacation" handling.
2346
6e2b4ccc
PH
234784. Some minor changes to the Linux configuration files to help with other
2348 OS variants using glibc.
2349
8e669ac1
PH
235085. One more patch for Sieve to update vacation handling to latest spec.
2351
495ae4b0 2352
bbe902f0
PH
2353----------------------------------------------------
2354See the note above about the 4.44 and 4.50 releases.
2355----------------------------------------------------
2356
2357
2358Exim version 4.44
2359-----------------
2360
2361 1. Change 4.43/35 introduced a bug that caused file counts to be
2362 incorrectly computed when quota_filecount was set in an appendfile
2363 transport
2364
2365 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2366 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2367 place.
2368
2369 3. Give more explanation in the error message when the command for a transport
2370 filter fails to execute.
2371
2372 4. There are several places where Exim runs a non-Exim command in a
2373 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2374 was being done only for the command run by the queryprogram router. It is
2375 now done for all such subprocesses. The other cases are: ${run, transport
2376 filters, and the commands run by the lmtp and pipe transports.
2377
2378 5. Some older OS have a limit of 256 on the maximum number of file
2379 descriptors. Exim was using setrlimit() to set 1000 as a large value
2380 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2381 systems. I've change it so that if it can't get 1000, it tries for 256.
2382
2383 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2384 was an oversight, and furthermore, ever since the addition of extra
2385 controls (e.g. 4.43/32), the checks on when to allow different forms of
2386 "control" were broken. There should now be diagnostics for all cases when a
2387 control that does not make sense is encountered.
2388
2389 7. $recipients is now available in the predata ACL (oversight).
2390
2391 8. Tidy the search cache before the fork to do a delivery from a message
2392 received from the command line. Otherwise the child will trigger a lookup
2393 failure and thereby defer the delivery if it tries to use (for example) a
2394 cached ldap connection that the parent has called unbind on.
2395
2396 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2397 of $address_data from the recipient verification was clobbered by the
2398 sender verification.
2399
240010. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2401 was its contents. (It was OK if the option was not defined at all.)
2402
240311. A "Completed" log line is now written for messages that are removed from
2404 the spool by the -Mrm option.
2405
240612. $host_address is now set to the target address during the checking of
2407 ignore_target_hosts.
2408
240913. When checking ignore_target_hosts for an ipliteral router, no host name was
2410 being passed; this would have caused $sender_host_name to have been used if
2411 matching the list had actually called for a host name (not very likely,
2412 since this list is usually IP addresses). A host name is now passed as
2413 "[x.x.x.x]".
2414
241514. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2416 code that specifies a non-restarting handler (typically sigaction() in
2417 modern systems) in an attempt to fix a rare and obscure crash bug.
2418
241915. Narrowed the window for a race in the daemon that could cause it to ignore
2420 SIGCHLD signals. This is not a major problem, because they are used only to
2421 wake it up if nothing else does.
2422
242316. A malformed maildirsize file could cause Exim to calculate negative values
2424 for the mailbox size or file count. Odd effects could occur as a result.
2425 The maildirsize information is now recalculated if the size or filecount
2426 end up negative.
2427
242817. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2429 support for a long time. Removed HAVE_SYS_VFS_H.
2430
ea3a6f44 243118. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2432
243319. Allow an empty sender to be matched against a lookup in an address list.
2434 Previously the only cases considered were a regular expression, or an
2435 empty pattern.
2436
243720. Exim went into a mad DNS lookup loop when doing a callout where the
2438 host was specified on the transport, if the DNS lookup yielded more than
2439 one IP address.
2440
ea3a6f44
NM
244121. The RFC2047 encoding function was originally intended for short strings
2442 such as real names; it was not keeping to the 75-character limit for
2443 encoded words that the RFC imposes. It now respects the limit, and
2444 generates multiple encoded words if necessary. To be on the safe side, I
2445 have increased the buffer size for the ${rfc2047: expansion operator from
2446 1024 to 2048 bytes.
bbe902f0 2447
ea3a6f44
NM
244822. Failure to deliver a bounce message always caused it to be frozen, even if
2449 there was an errors_to setting on the router. The errors_to setting is now
2450 respected.
bbe902f0
PH
2451
245223. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2453 canonical form (fully expanded) before being placed in
2454 $sender_host_address.
2455
245624. Updated eximstats to version 1.33
2457
ea3a6f44
NM
245825. Include certificate and key file names in error message when GnuTLS fails
2459 to set them up, because the GnuTLS error message doesn't include the name
2460 of the failing file when there is a problem reading it.
bbe902f0
PH
2461
246226. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2463 As per change 25.
bbe902f0 2464
ea3a6f44
NM
246527. Reset the locale to "C" after calling embedded Perl, in case it was changed
2466 (this can affect the format of dates).
bbe902f0 2467
ea3a6f44
NM
246828. exim_tidydb, when checking for the continued existence of a message for
2469 which it has found a message-specific retry record, was not finding
2470 messages that were in split spool directories. Consequently, it was
2471 deleting retry records that should have stayed in existence.
bbe902f0
PH
2472
247329. eximstats updated to version 1.35
2474 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2475 1.35 - bugfix such that pie charts by volume are generated correctly
2476
ea3a6f44
NM
247730. The SPA authentication driver was not abandoning authentication and moving
2478 on to the next authenticator when an expansion was forced to fail,
2479 contradicting the general specification for all authenticators. Instead it
2480 was generating a temporary error. It now behaves as specified.
bbe902f0 2481
ea3a6f44
NM
248231. The default ordering of permitted cipher suites for GnuTLS was pessimal
2483 (the order specifies the preference for clients). The order is now AES256,
2484 AES128, 3DES, ARCFOUR128.
bbe902f0 2485
ea3a6f44
NM
248631. Small patch to Sieve code - explicitly set From: when generating an
2487 autoreply.
bbe902f0 2488
ea3a6f44
NM
248932. Exim crashed if a remote delivery caused a very long error message to be
2490 recorded - for instance if somebody sent an entire SpamAssassin report back
2491 as a large number of 550 error lines. This bug was coincidentally fixed by
2492 increasing the size of one of Exim's internal buffers (big_buffer) that
2493 happened as part of the Exiscan merge. However, to be on the safe side, I
2494 have made the code more robust (and fixed the comments that describe what
2495 is going on).
bbe902f0 2496
ea3a6f44
NM
249733. Some experimental protocols are using DNS PTR records for new purposes. The
2498 keys for these records are domain names, not reversed IP addresses. The
2499 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2500 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2501 CAN-2005-0021
2502
ea3a6f44
NM
250334. The host_aton() function is supposed to be passed a string that is known
2504 to be a valid IP address. However, in the case of IPv6 addresses, it was
2505 not checking this. This is a hostage to fortune. Exim now panics and dies
2506 if the condition is not met. A case was found where this could be provoked
2507 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2508 components; fortuitously, this particular loophole had already been fixed
2509 by change 4.50/55 or 4.44/33 above.
2510
2511 If there are any other similar loopholes, the new check in host_aton()
2512 itself should stop them being exploited. The report I received stated that
2513 data on the command line could provoke the exploit when Exim was running as
2514 exim, but did not say which command line option was involved. All I could
2515 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2516 running as the user.
bbe902f0
PH
2517 CAN-2005-0021
2518
ea3a6f44
NM
251935. There was a buffer overflow vulnerability in the SPA authentication code
2520 (which came originally from the Samba project). I have added a test to the
2521 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2522 CAN-2005-0022
2523
ea3a6f44
NM
252436. The daemon start-up calls getloadavg() while still root for those OS that
2525 need the first call to be done as root, but it missed one case: when
2526 deliver_queue_load_max is set with deliver_drop_privilege. This is
2527 necessary for the benefit of the queue runner, because there is no re-exec
2528 when deliver_drop_privilege is set.
bbe902f0 2529
ea3a6f44
NM
253037. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2531 was in use, was not putting the data itself into the right store pool;
2532 consequently, it could be overwritten for a subsequent message in the same
2533 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2534 the caching.)
bbe902f0 2535
ea3a6f44
NM
253638. Sometimes the final signoff response after QUIT could fail to get
2537 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2538 < 0 before doing a fflush(). This bug looks as though it goes back to the
2539 introduction of TLS in release 3.20, but "sometimes" must have been rare
2540 because the tests only now provoked it.
bbe902f0
PH
2541
2542
495ae4b0
PH
2543Exim version 4.43
2544-----------------
2545
2546 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2547 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2548 Now it returns an integer. A number of calls were still expecting a T/F
2549 return. Fortuitously, in all cases, the tests worked in OK situations,
2550 which is the norm. However, things would have gone wrong on any write
2551 failures on the smtp file descriptor. This function is used when sending
2552 messages over SMTP and also when doing verify callouts.
2553
2554 2. When Exim is called to do synchronous delivery of a locally submitted
2555 message (the -odf or -odi options), it no longer closes stderr before doing
2556 the delivery.
2557
2558 3. Implemented the mua_wrapper option.
2559
2560 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2561
2562 5. Implemented the functions header_remove(), header_testname(),
2563 header_add_at_position(), and receive_remove_recipient(), and exported them
2564 to local_scan().
2565
2566 6. If an ACL "warn" statement specified the addition of headers, Exim already
2567 inserted X-ACL-Warn: at the start if there was no header name. However, it
2568 was not making this test for the second and subsequent header lines if
2569 there were newlines in the string. This meant that an invalid header could
2570 be inserted if Exim was badly configured.
2571
2572 7. Allow an ACL "warn" statement to add header lines at the start or after all
2573 the Received: headers, as well as at the end.
2574
2575 8. Added the rcpt_4xx retry error code.
2576
2577 9. Added postmaster_mailfrom=xxx to callout verification option.
2578
257910. Added mailfrom=xxxx to the callout verification option, for verify=
2580 header_sender only.
2581
258211. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2583 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2584
258512. Inserted some casts to stop certain compilers warning when using pointer
2586 differences as field lengths or precisions in printf-type calls (mostly
2587 affecting debugging statements).
2588
258913. Added optional readline() support for -be (dynamically loaded).
2590
259114. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2592 same clock tick as a message's arrival, so that its received time was the
2593 same as the "first fail" time on the retry record, and that message
2594 remained on the queue past the ultimate address timeout, every queue runner
2595 would try a delivery (because it was past the ultimate address timeout) but
2596 after another failure, the ultimate address timeout, which should have then
2597 bounced the address, did not kick in. This was a "< instead of <=" error;
2598 in most cases the first failure would have been in the next clock tick
2599 after the received time, and all would be well.
2600
260115. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2602 being recognized when the domain list was tested by the match_domain
2603 condition in an expansion string.
2604
260516. Added the ${str2b64: operator.
2606
260717. Exim was always calling setrlimit() to set a large limit for the number of
2608 processes, without checking whether the existing limit was already
2609 adequate. (It did check for the limit on file descriptors.) Furthermore,
2610 errors from getrlimit() and setrlimit() were being ignored. Now they are
2611 logged to the main and panic logs, but Exim does carry on, to try to do its
2612 job under whatever limits there are.
2613
261418. Imported PCRE 5.0.
2615
261619. Trivial typo in log message " temporarily refused connection" (the leading
2617 space).
2618
261920. If the log selector return_path_on_delivery was set and an address was
2620 redirected to /dev/null, the delivery process crashed because it assumed
2621 that a return path would always be set for a "successful" delivery. In this
2622 case, the whole delivery is bypassed as an optimization, and therefore no
2623 return path is set.
2624
262521. Internal re-arrangement: the function for sending a challenge and reading
2626 a response while authentication was assuming a zero-terminated challenge
2627 string. It's now changed to take a pointer and a length, to allow for
2628 binary data in such strings.
2629
263022. Added the cyrus_sasl authenticator (code supplied by MBM).
2631
263223. Exim was not respecting finduser_retries when seeking the login of the
2633 uid under which it was called; it was always trying 10 times. (The default
2634 setting of finduser_retries is zero.) Also, it was sleeping after the final
2635 failure, which is pointless.
2636
263724. Implemented tls_on_connect_ports.
2638
263925. Implemented acl_smtp_predata.
2640
264126. If the domain in control=submission is set empty, Exim assumes that the
2642 authenticated id is a complete email address when it generates From: or
2643 Sender: header lines.
2644
264527. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2646 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2647 chown and chgrp in /bin and hostname in /usr/bin.
2648
264928. Exim was keeping the "process log" file open after each use, just as it
2650 does for the main log. This opens the possibility of it remaining open for
2651 long periods when the USR1 signal hits a daemon. Occasional processlog
2652 errors were reported, that could have been caused by this. Anyway, it seems
2653 much more sensible not to leave this file open at all, so that is what now
2654 happens.
2655
265629. The long-running daemon process does not normally write to the log once it
2657 has entered its main loop, and it closes the log before doing so. This is
2658 so that log files can straightforwardly be renamed and moved. However,
2659 there are a couple of unusual error situations where the daemon does write
2660 log entries, and I had neglected to close the log afterwards.
2661
266230. The text of an SMTP error response that was received during a remote
2663 delivery was being truncated at 512 bytes. This is too short for some of
2664 the long messages that one sometimes sees. I've increased the limit to
2665 1024.
2666
266731. It is now possible to make retry rules that apply only when a message has a
2668 specific sender, in particular, an empty sender.
2669
267032. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2671 it possible to be selective about when SMTP synchronization is enforced.
2672
267333. Added "control = caseful_local_part" and "control = "caselower_local_part".
2674
267532. Implemented hosts_connection_nolog.
2676
267733. Added an ACL for QUIT.
2678
267934. Setting "delay_warning=" to disable warnings was not working; it gave a
2680 syntax error.
2681
268235. Added mailbox_size and mailbox_filecount to appendfile.
2683
268436. Added control = no_multiline_responses to ACLs.
2685
268637. There was a bug in the logic of the code that waits for the clock to tick
2687 in the case where the clock went backwards by a substantial amount such
2688 that the microsecond fraction of "now" was more than the microsecond
2689 fraction of "then" (but the whole seconds number was less).
2690
269138. Added support for the libradius Radius client library this is found on
2692 FreeBSD (previously only the radiusclient library was supported).
2693
2694
2695Exim version 4.42
2696-----------------
2697
2698 1. When certain lookups returned multiple values in the form name=value, the
2699 quoting of the values was not always being done properly. Specifically:
2700 (a) If the value started with a double quote, but contained no whitespace,
2701 it was not quoted.
2702 (b) If the value contained whitespace other than a space character (i.e.
2703 tabs or newlines or carriage returns) it was not quoted.
2704 This fix has been applied to the mysql and pgsql lookups by writing a
2705 separate quoting function and calling it from the lookup code. The fix
2706 should probably also be applied to nisplus, ibase and oracle lookups, but
2707 since I cannot test any of those, I have not disturbed their existing code.
2708
2709 2. A hit in the callout cache for a specific address caused a log line with no
2710 reason for rejecting RCPT. Now it says "Previous (cached) callout
2711 verification failure".
2712
2713 3. There was an off-by-one bug in the queryprogram router. An over-long
2714 return line was truncated at 256 instead of 255 characters, thereby
2715 overflowing its buffer with the terminating zero. As well as fixing this, I
2716 have increased the buffer size to 1024 (and made a note to document this).
2717
2718 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2719 when Exim is waiting for an SMTP response from a remote server, Exim
2720 restarts its select() call on the socket, thereby resetting its timeout.
2721 This is not a problem when such interrupts are rare. Somebody set up a cron
2722 job to run exiwhat every 2 minutes, which is less than the normal select()
2723 timeout (5 or 10 minutes). This meant that the select() timeout never
2724 kicked in because it was always reset. I have fixed this by comparing the
2725 time when an interrupt arrives with the time at the start of the first call
2726 to select(). If more time than the timeout has elapsed, the interrupt is
2727 treated as a timeout.
2728
2729 5. Some internal re-factoring in preparation for the addition of Sieve
2730 extensions (by MH). In particular, the "personal" test is moved to a
2731 separate function, and given an option for scanning Cc: and Bcc: (which is
2732 not set for Exim filters).
2733
2734 6. When Exim created an email address using the login of the caller as the
2735 local part (e.g. when creating a From: or Sender: header line), it was not
2736 quoting the local part when it contained special characters such as @.
2737
2738 7. Installed new OpenBSD configuration files.
2739
2740 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2741 try to make them clearer.
2742
2743 9. Callout options, other than the timeout value, were being ignored when
2744 verifying sender addresses in header lines. For example, when using
2745
2746 verify = header_sender/callout=no_cache
2747
2748 the cache was (incorrectly) being used.
2749
275010. Added a missing instance of ${EXE} to the exim_install script; this affects
2751 only the Cygwin environment.
2752
275311. When return_path_on_delivery was set as a log selector, if different remote
2754 addresses in the same message used different return paths and parallel
2755 remote delivery occurred, the wrong values would sometimes be logged.
2756 (Whenever a remote delivery process finished, the return path value from
2757 the most recently started remote delivery process was logged.)
2758
275912. RFC 3848 specifies standard names for the "with" phrase in Received: header
2760 lines when AUTH and/or TLS are in use. This is the "received protocol"
2761 field. Exim used to use "asmtp" for authenticated SMTP, without any
2762 indication (in the protocol name) for TLS use. Now it follows the RFC and
2763 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2764 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2765 names appear in log lines as well as in Received: header lines.
2766
276713. Installed MH's patches for Sieve to add the "copy" and "vacation"
2768 extensions, and comparison tests, and to fix some bugs.
2769
277014. Changes to the "personal" filter test:
2771
2772 (1) The test was buggy in that it was just doing the equivalent of
2773 "contains" tests on header lines. For example, if a user's address was
2774 anne@some.where, the "personal" test would incorrectly be true for
2775
2776 To: susanne@some.where
2777
2778 This test is now done by extracting each address from the header in turn,
2779 and checking the entire address. Other tests that are part of "personal"
2780 are now done using regular expressions (for example, to check local parts
2781 of addresses in From: header lines).
2782
2783 (2) The list of non-personal local parts in From: addresses has been
2784 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2785 taken from the Sieve specification recommendations.
2786
2787 (3) If the message contains any header line starting with "List-" it is
2788 treated as non-personal.
2789
2790 (4) The test for "circular" in the Subject: header line has been removed
2791 because it now seems ill-conceived.
2792
279315. Minor typos in src/EDITME comments corrected.
2794
279516. Installed latest exipick from John Jetmore.
2796
279717. If headers_add on a router specified a text string that was too long for
2798 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2799 of string_sprintf() is now avoided.
2800
280118. $message_body_size was not set (it was always zero) when running the DATA
2802 ACL and the local_scan() function.
2803
280419. For the "mail" command in an Exim filter, no default was being set for
2805 the once_repeat time, causing a random time value to be used if "once" was
2806 specified. (If the value happened to be <= 0, no repeat happened.) The
2807 default is now 0s, meaning "never repeat". The "vacation" command was OK
2808 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2809 (I found it when inspecting the code).
2810
281120. There is now an overall timeout for performing a callout verification. It
2812 defaults to 4 times the callout timeout, which applies to individual SMTP
2813 commands during the callout. The overall timeout applies when there is more
2814 than one host that can be tried. The timeout is checked before trying the
2815 next host. This prevents very long delays if there are a large number of
2816 hosts and all are timing out (e.g. when the network connections are timing
2817 out). The value of the overall timeout can be changed by specifying an
2818 additional sub-option for "callout", called "maxwait". For example:
2819
2820 verify = sender/callout=5s,maxwait=20s
2821
282221. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2823 to the end before writing, but this should make it even safer).
2824
282522. Exim was forgetting that it had advertised PIPELINING for the second and
2826 subsequent messages on an SMTP connection. It was also not resetting its
2827 memory on STARTTLS and an internal HELO.
2828
282923. When Exim logs an SMTP synchronization error within a session, it now
2830 records whether PIPELINING has been advertised or not.
2831
283224. Added 3 instances of "(long int)" casts to time_t variables that were being
2833 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2834 rather than long int.
2835
283625. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2837
283826. Added the never_mail option to autoreply.
2839
2840
2841Exim version 4.41
2842-----------------
2843
2844 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2845 crash if the getsockname() call failed; this can happen if a connection is
2846 closed very soon after it is established. The problem was simply in the
2847 order in which certain operations were done, causing Exim to try to write
2848 to the SMTP stream before it had set up the file descriptor. The bug has
2849 been fixed by making things happen in the correct order.
2850
2851
2852Exim version 4.40
2853-----------------
2854
2855 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2856 before the connection was closed, thus losing the rejection response.
2857
2858 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2859 some early Solaris releases, but causes trouble in current releases where
2860 socklen_t is defined.
2861
2862 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2863 always exist.
2864
2865 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2866 configured.
2867
2868 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2869 that releasing the top of it at the end releases what was used for sub-
2870 expansions (unless the block got too big). However, discard this block if
2871 the first thing is a variable or header, so that we can use its block when
2872 it is dynamic (useful for very large $message_headers, for example).
2873
2874 6. Lookups now cache *every* query, not just the most recent. A new, separate
2875 store pool is used for this. It can be recovered when all lookup caches are
2876 flushed. Lookups now release memory at the end of their result strings.
2877 This has involved some general refactoring of the lookup sources.
2878
2879 7. Some code has been added to the store_xxx() functions to reduce the amount
2880 of flapping under certain conditions.
2881
2882 8. log_incoming_interface used to affect only the <= reception log lines. Now
2883 it causes the local interface and port to be added to several more SMTP log
2884 lines, for example "SMTP connection from", and rejection lines.
2885
2886 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2887
288810. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2889
289011. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2891 could be overwritten at the end of the current message (or the start of a
2892 new message if it was set in a HELO ACL). The value is now preserved for
2893 the duration of the SMTP connection.
2894
289512. If a transport had a headers_rewrite setting, and a matching header line
2896 contained an unqualified address, that address was qualified, even if it
2897 did not match any rewriting rules. The underlying bug was that the values
2898 of the flags that permit the existence of unqualified sender and recipient
2899 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2900 non-local messages, and by -bnq for local messages) were not being
2901 preserved with the message after it was received.
2902
290313. When Exim was logging an SMTP synchronization error, it could sometimes log
2904 "next input=" as part of the text comprising the host identity instead of
2905 the correct text. The code was using the same buffer for two different
2906 strings. However, depending on which order the printing function evaluated
2907 its arguments, the bug did not always show up. Under Linux, for example, my
2908 test suite worked just fine.
2909
291014. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2911 doesn't work with some older versions of Perl. It has been changed to "my",
2912 which in any case is probably the better facility to use.
2913
291415. A really picky compiler found some instances of statements for creating
2915 error messages that either had too many or two few arguments for the format
2916 string.
2917
291816. The size of the buffer for calls to the DNS resolver has been increased
2919 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2920 for addresses that have a lot of PTR records. This alleviates a problem; it
2921 does not fully solve it.
2922
292317. A dnsdb lookup for PTR records that receives more data than will fit in the
2924 buffer now truncates the list and logs the incident, which is the same
2925 action as happens when Exim is looking up a host name and its aliases.
2926 Previously in this situation something unpredictable would happen;
2927 sometimes it was "internal error: store_reset failed".
2928
292918. If a server dropped the connection unexpectedly when an Exim client was
2930 using GnuTLS and trying to read a response, the client delivery process
2931 crashed while trying to generate an error log message.
2932
293319. If a "warn" verb in an ACL added multiple headers to a message in a single
2934 string, for example:
2935
2936 warn message = H1: something\nH2: something
2937
2938 the text was added as a single header line from Exim's point of view
2939 though it ended up OK in the delivered message. However, searching for the
2940 second and subsequent header lines using $h_h2: did not work. This has been
2941 fixed. Similarly, if a system filter added multiple headers in this way,
2942 the routers could not see them.
2943
294420. Expanded the error message when iplsearch is called with an invalid key to
2945 suggest using net-iplsearch in a host list.
2946
294721. When running tests using -bh, any delays imposed by "delay" modifiers in
2948 ACLs are no longer actually imposed (and a message to that effect is
2949 output).
2950
295122. If a "gecos" field in a passwd entry contained escaped characters, in
2952 particular, if it contained a \" sequence, Exim got it wrong when building
2953 a From: or a Sender: header from that name. A second bug also caused
2954 incorrect handling when an unquoted " was present following a character
2955 that needed quoting.
2956
295723. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2958 was not being matched caselessly.
2959
296024. Arranged for all hyphens in the exim.8 source to be escaped with
2961 backslashes.
2962
296325. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2964 properly. Recipient callout cache records were still being keyed to include
2965 the sender, even when use_sender was set false. This led to far more
2966 callouts that were necessary. The sender is no longer included in the key
2967 when use_sender is false.
2968
296926. Added "control = submission" modifier to ACLs.
2970
297127. Added the ${base62d: operator to decode base 62 numbers.
2972
297328. dnsdb lookups can now access SRV records.
2974
297529. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2976 the configuration file.
2977
297830. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2979 (-v) mode. This makes the output for a verbose queue run more intelligible.
2980
298131. Added a use_postmaster feature to recipient callouts.
2982
298332. Added the $body_zerocount variable, containing the number of binary zero
2984 bytes in the message body.
2985
298633. The time of last modification of the "new" subdirectory is now used as the
2987 "mailbox time last read" when there is a quota error for a maildir
2988 delivery.
2989
299034. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2991
299235. Added +ignore_unknown as a special item in host lists.
2993
299436. Code for decoding IPv6 addresses in host lists is now included, even if
2995 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2996 address was recognized as an IP address, but was then not correctly decoded
2997 into binary, causing unexpected and incorrect effects when compared with
2998 another IP address.
2999
3000
3001Exim version 4.34
3002-----------------
3003
3004 1. Very minor rewording of debugging text in manualroute to say "list of
3005 hosts" instead of "hostlist".
3006
3007 2. If verify=header_syntax was set, and a header line with an unqualified
3008 address (no domain) and a large number of spaces between the end of the
3009 name and the colon was received, the reception process suffered a buffer
3010 overflow, and (when I tested it) crashed. This was caused by some obsolete
3011 code that should have been removed. The fix is to remove it!
3012
3013 3. When running in the test harness, delay a bit after writing a bounce
3014 message to get a bit more predictability in the log output.
3015
3016 4. Added a call to search_tidyup() just before forking a reception process. In
3017 theory, someone could use a lookup in the expansion of smtp_accept_max_
3018 per_host which, without the tidyup, could leave open a database connection.
3019
3020 5. Added the variables $recipient_data and $sender_data which get set from a
3021 lookup success in an ACL "recipients" or "senders" condition, or a router
3022 "senders" option, similar to $domain_data and $local_part_data.
3023
3024 6. Moved the writing of debug_print from before to after the "senders" test
3025 for routers.
3026
3027 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3028 problems for message scanning, either using a data ACL, or using
3029 local_scan() because the Received: header was not generated till after they
3030 were called (in order to set the time as the time of reception completion).
3031 I have revised the way this works. The header is now generated after the
3032 body is received, but before the ACL or local_scan() are called. After they
3033 are run, the timestamp in the header is updated.
3034
3035
3036Exim version 4.33
3037-----------------
3038
3039 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3040 before starting a queue runner without re-exec. This happened only when
3041 deliver_drop_privilege was set or when the Exim user was set to root. The
3042 effect of the bug was that timeouts during subsequent deliveries caused
3043 crashes instead of being properly handled. The handler is now left at its
3044 default (and expected) setting.
3045
3046 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3047 message, again when deliver_drop_privilege is set or Exim is run as root.
3048 The bug described in (1) was not present in this case, but the tidying up
3049 of the other signals was missing. I have made the two cases consistent.
3050
3051 3. The ignore_target_hosts setting on a manualroute router was being ignored
3052 for hosts that were looked up using the /MX notation.
3053
3054 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3055 in domain lists.
3056
3057 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3058 operated on the sender address. After changing the $sender_address to <>
3059 for the sender address verify, Exim was re-instated it as the original
3060 (before rewriting) address, but remembering that it had rewritten it, so it
3061 wasn't rewriting it again. This bug also had the effect of breaking the
3062 sender address verification caching when the sender address was rewritten.
3063
3064 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3065 This has been changed so that if the ip literal address matches
3066 ignore_target_hosts, the router declines.
3067
3068 7. Added expansion conditions match_domain, match_address, and match_local_
3069 part (NOT match_host).
3070
3071 8. The placeholder for the Received: header didn't have a length field set.
3072
3073 9. Added code to Exim itself and to exim_lock to test for a specific race
3074 condition that could lead to file corruption when using MBX delivery. The
3075 issue is with the lockfile that is created in /tmp. If this file is removed
3076 after a process has opened it but before that process has acquired a lock,
3077 there is the potential for a second process to recreate the file and also
3078 acquire a lock. This could lead to two Exim processes writing to the file
3079 at the same time. The added code performs the same test as UW imapd; it
3080 checks after acquiring the lock that its file descriptor still refers to
3081 the same named file.
3082
308310. The buffer for building added header lines was of fixed size, 8192 bytes.
3084 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3085 when Exim is built.
3086
308711. Added the smtp_active_hostname option. If used, this will typically be made
3088 to depend on the incoming interface address. Because $interface_address is
3089 not set up until the daemon has forked a reception process, error responses
3090 that can happen earlier (such as "too many connections") no longer contain
3091 a host name.
3092
309312. If an expansion in a condition on a "warn" statement fails because a lookup
3094 defers, the "warn" statement is abandoned, and the next ACL statement is
3095 processed. Previously this caused the whole ACL to be aborted.
3096
309713. Added the iplsearch lookup type.
3098
309914. Added ident_timeout as a log selector.
3100
310115. Added tls_certificate_verified as a log selector.
3102
310316. Added a global option tls_require_ciphers (compare the smtp transport
3104 option of the same name). This controls incoming TLS connections.
3105
310617. I finally figured out how to make tls_require_ciphers do a similar thing
3107 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3108 before starting the TLS session.
3109
311018. Tabs are now shown as \t in -bP output.
3111
311219. If the log selector return_path_on_delivery was set, Exim crashed when
3113 bouncing a message because it had too many Received: header lines.
3114
311520. If two routers both had headers_remove settings, and the first one included
3116 a superfluous trailing colon, the final name in the first list and the
3117 first name in the second list were incorrectly joined into one item (with a
3118 colon in the middle).
3119
3120
3121Exim version 4.32
3122-----------------
3123
3124 1. Added -C and -D options to the exinext utility, mainly to make it easier
3125 to include in the automated testing, but these could be helpful when
3126 multiple configurations are in use.
3127
3128 2. The exinext utility was not formatting the output nicely when there was
3129 an alternate port involved in the retry record key, nor when there was a
3130 message id as well (for retries that were specific to a specific message
3131 and a specific host). It was also confused by IPv6 addresses, because of
3132 the additional colons they contain. I have fixed the IPv4 problem, and
3133 patched it up to do a reasonable job for IPv6.
3134
3135 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3136 delivery, the log line now contains "pipelined" if PIPELINING was used.
3137
3138 4. An SMTP transport process used to panic and die if the bind() call to set
3139 an explicit outgoing interface failed. This has been changed; it is now
3140 treated in the same way as a connect() failure.
3141
3142 5. A reference to $sender_host_name in the part of a conditional expansion
3143 that was being skipped was still causing a DNS lookup. This no longer
3144 occurs.
3145
3146 6. The def: expansion condition was not recognizing references to header lines
3147 that used bh_ and bheader_.
3148
3149 7. Added the _cache feature to named lists.
3150
3151 8. The code for checking quota_filecount in the appendfile transport was
3152 allowing one more file than it should have been.
3153
3154 9. For compatibility with Sendmail, the command line option
3155
3156 -prval:sval
3157
3158 is equivalent to
3159
3160 -oMr rval -oMs sval
3161
3162 and sets the incoming protocol and host name (for trusted callers). The
3163 host name and its colon can be omitted when only the protocol is to be set.
3164 Note the Exim already has two private options, -pd and -ps, that refer to
3165 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3166 "s", but I don't think that's a major issue.
3167
316810. A number of refactoring changes to the code, none of which should affect
3169 Exim's behaviour:
3170
3171 (a) The number of logging options was getting close to filling up the
3172 32-bit word that was used as a bit map. I have split them into two classes:
3173 those that are passed in the argument to log_write(), and those that are
3174 only ever tested independently outside of that function. These are now in
3175 separate 32-bit words, so there is plenty of room for expansion again.
3176 There is no change in the user interface or the logging behaviour.
3177
3178 (b) When building, for example, log lines, the code previously used a
3179 macro that called string_cat() twice, in order to add two strings. This is
3180 not really sufficiently general. Furthermore, there was one instance where
3181 it was actually wrong because one of the argument was used twice, and in
3182 one call a function was used. (As it happened, calling the function twice
3183 did not affect the overall behaviour.) The macro has been replaced by a
3184 function that can join an arbitrary number of extra strings onto a growing
3185 string.
3186
3187 (c) The code for expansion conditions now uses a table and a binary chop
3188 instead of a serial search (which was left over from when there were very
3189 few conditions). Also, it now recognizes conditions like "pam" even when
3190 the relevant support is not compiled in: a suitably worded error message is
3191 given if an attempt is made to use such a condition.
3192
319311. Added ${time_interval:xxxxx}.
3194
319512. A bug was causing one of the ddress fields not to be passed back correctly
3196 from remote delivery subprocesses. The field in question was not being
3197 subsequently used, so this caused to problems in practice.
3198
319913. Added new log selectors queue_time and deliver_time.
3200
320114. Might have fixed a bug in maildirsizefile handling that threw up
3202 "unexpected character" debug warnings, and recalculated the data
3203 unnecessarily. In any case, I expanded the warning message to give more
3204 information.
3205
320615. Added the message "Restricted characters in address" to the statements in
3207 the default ACL that block characters like @ and % in local parts.
3208
320916. Change 71 for release 4.31 proved to be much less benign that I imagined.
3210 Three changes have been made:
3211
3212 (a) There was a serious bug; a negative response to MAIL caused the whole
3213 recipient domain to be cached as invalid, thereby blocking all messages
3214 to all local parts at the same domain, from all senders. This bug has
3215 been fixed. The domain is no longer cached after a negative response to
3216 MAIL if the sender used is not empty.
3217
3218 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3219 been restored.
3220
3221 (c) A new callout option, "use_sender" has been added for people who want
3222 the modified behaviour.
3223
3224
3225Exim version 4.31
3226-----------------
3227
3228 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3229 Larry Rosenman.
3230
3231 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3232 indeed breaks things for older releases.
3233
3234 3. Added additional logging to the case where there is a problem reading data
3235 from a filter that is running in a subprocess using a pipe, in order to
3236 try to track down a specific problem.
3237
3238 4. Testing facility fudge: when running in the test harness and attempting
3239 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3240 getting "No route to host". Convert this to a timeout.
3241
3242 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3243 warning.
3244
3245 6. Some OS don't have socklen_t but use size_t instead. This affects the
3246 fifth argument of getsockopt() amongst other things. This is now
3247 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3248 can be set for individual OS. I have set it for SunOS5, OSF1, and
3249 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3250 some earlier ones do not.
3251
3252 7. Change 4.30/15 was not doing the test caselessly.
3253
3254 8. The standard form for an IPv6 address literal was being rejected by address
3255 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3256 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3257 this, as well as the form without the "IPv6" on the front (but only when
3258 address literals are enabled, of course).
3259
3260 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3261
326210. Exim crashed if a message with an empty sender address specified by -f
3263 encountered a router with an errors_to setting. This could be provoked only
3264 by a command such as
3265
3266 exim -f "" ...
3267
3268 where an empty string was supplied; "<>" did not hit this bug.
3269
327011. Installed PCRE release 4.5.
3271
327212. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3273 remained set. It is now erased.
3274
327513. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3276 times from message ids (which are base 36 rather than the normal 62).
3277
327814. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3279 were being counted as actual protocol errors, and logged if the log
3280 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3281 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3282 and DATA following a set of rejected RCPTs do not count as protocol errors.
3283 In other words, Exim assumes they were pipelined, though this may not
3284 actually be the case. Of course, in all cases the client gets an
3285 appropriate error code.
3286
328715. If a lookup fails in an ACL condition, a message about the failure may
3288 be available; it is used if testing the ACL cannot continue, because most
3289 such messages specify what the cause of the deferral is. However, some
3290 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3291 that caused an old message to be retained and used if a later statement
3292 caused a defer, replacing the real cause of the deferral.
3293
329416. If an IP address had so many PTR records that the DNS lookup buffer
3295 was not large enough to hold them, Exim could crash while trying to process
3296 the truncated data. It now detects and logs this case.
3297
329817. Further to 4.21/58, another change has been made: if (and only if) the
3299 first line of a message (the first header line) ends with CRLF, a bare LF
3300 in a subsequent header line has a space inserted after it, so as not to
3301 terminate the header.
3302
330318. Refactoring: tidied an ugly bit of code in appendfile that copied data
3304 unnecessarily, used atoi() instead of strtol(), and didn't check the
3305 termination when getting file sizes from file names by regex.
3306
330719. Completely re-implemented the support for maildirsize files, in the light
3308 of a number of problems with the previous contributed implementation
3309 (4.30/29). In particular:
3310
3311 . If the quota is zero, the maildirsize file is maintained, but no quota is
3312 imposed.
3313
3314 . If the maildir directory does not exist, it is created before any attempt
3315 to write a maildirsize file.
3316
3317 . The quota value in the file is just a cache; if the quota is changed in
3318 the transport, the new value overrides.
3319
3320 . A regular expression is available for excluding directories from the
3321 count.
3322
332320. The autoreply transport checks the characters in options that define the
3324 message's headers; it allows continued headers, but it was checking with
3325 isspace() after an embedded newline instead of explicitly looking for a
3326 space or a tab.
3327
332821. If all the "regular" hosts to which an address was routed had passed their
3329 expiry times, and had not reached their retry times, the address was
3330 bounced, even if fallback hosts were defined. Now Exim should go on to try
3331 the fallback hosts.
3332
333322. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3334 equivalent code in the SMTP transport. Some hosts send humungous responses
3335 to HELO/EHLO, more than 1024 it seems.
3336
333723. Refactoring: code in filter.c used (void *) for "any old type" but this
3338 gives compiler warnings in some environments. I've now done it "properly",
3339 using a union.
3340
334124. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3342 (because of problems with the built-in one) was declared to return uschar *
3343 instead of char *, causing compiler failure.
3344
334525. Fixed a file descriptor leak when processing alias/forward files.
3346
334726. Fixed a minor format string issue in dbfn.c.
3348
334927. Typo in exim.c: ("dmbnz" for "dbmnz").
3350
335128. If a filter file refered to $h_xxx or $message_headers, and the headers
3352 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3353 become corrupted.
3354
335529. When a sender address is verified, it is cached, to save repeating the test
3356 when there is more than one recipient in a message. However, when the
3357 verification involves a callout, it is possible for different callout
3358 options to be set for different recipients. It is too complicated to keep
3359 track of this in the cache, so now Exim always runs a verification when a
3360 callout is required, relying on the callout cache for the optimization.
3361 The overhead is duplication of the address routing, but this should not be
3362 too great.
3363
336430. Fixed a bug in callout caching. If a RCPT command caused the sender address
3365 to be verified with callout=postmaster, and the main callout worked but the
3366 postmaster check failed, the verification correctly failed. However, if a
3367 subsequent RCPT command asked for sender verification *without* the
3368 postmaster check, incorrect caching caused this verification also to fail,
3369 incorrectly.
3370
337131. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3372 it was not caching the DNS options (qualify_single, search_parents) that
3373 were used when the lookup failed. A subsequent lookup with different
3374 options therefore always gave the same answer, though there were cases
3375 where it should not have. (Example: a "domains = !$mx_any" option on a
3376 dnslookup router: the "domains" option is always processed without any
3377 widening, but the router might have qualify_single set.) Now Exim uses the
3378 cached value only when the same options are set.
3379
338032. Added John Jetmore's "exipick" utility to the distribution.
3381
338233. GnuTLS: When an attempt to start a TLS session fails for any reason other
3383 than a timeout (e.g. a certificate is required, and is not provided), an
3384 Exim server now closes the connection immediately. Previously it waited for
3385 the client to close - but if the client is SSL, it seems that they each
3386 wait for each other, leading to a delay before one of them times out.
3387
338834: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3389 maintained 0.8.x compatibility because I don't think many are using it, and
3390 it is clearly obsolete.
3391
339235. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3393 transport.
3394
339536. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3396 client certificate was expired. A simple patch fixes this, though I don't
3397 understand the full logic of why the verify callback is called multiple
3398 times.
3399
340037. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3401 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3402 which causes problems with some clients (such as the Certicom SSL Plus
3403 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3404 disables the coutermeasure allowing Eudora to connect."
3405
340638. Exim was not checking that a write() to a log file succeeded. This could
3407 lead to Bad Things if a log got too big, in particular if it hit a file
3408 size limit. Exim now panics and dies if it cannot write to a log file, just
3409 as it does if it cannot open a log file.
3410
341139. Modified OS/Makefile-Linux so that it now contains
3412
3413 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3414
3415 The two -D definitions ensure that Exim is compiled with large file
3416 support, which makes it possible to handle log files that are bigger than
3417 2^31.
3418
341940. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3420 instance) a domain was checked against a named list that involved a lookup,
3421 causing $domain_data to be set, then another domain was checked against the
3422 same list, then the first domain was re-checked, the value of $domain_data
3423 after the final check could be wrong. In particular, if the second check
3424 failed, it could be set empty. This bug probably also applied to
3425 $localpart_data.
3426
342741. The strip_trailing_dot option was not being applied to the address given
3428 with the -f command-line option.
3429
343042. The code for reading a message's header from the spool was incrementing
3431 $received_count, but never initializing it. This meant that the value was
3432 incorrect (doubled) while delivering a message in the same process in which
3433 it was received. In the most common configuration of Exim, this never
3434 happens - a fresh exec is done - but it can happen when
3435 deliver_drop_privilege is set.
3436
343743. When Exim logs an SMTP synchronization error - client data sent too soon -
3438 it now includes up to 150 characters of the unexpected data in the log
3439 line.
3440
344144. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3442 and building data strings. The size of both of these buffers was 10 000
3443 bytes - far larger than anybody would *ever* want, thought I. Needless to
3444 say, somebody hit the limit. I have increased the maximum line length to
3445 20 000 and the maximum data length of concatenated lines to 100 000. I have
3446 also fixed two bugs, because there was no checking on these buffers. Tsk,
3447 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3448 buffer is too small.
3449
345045. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3451 lsearch lookups. Now it does.
3452
345346. When parsing a route_list item in a manualroute router, a fixed-length
3454 buffer was used for the list of hosts. I made this 1024 bytes long,
3455 thinking that nobody would ever have a list of hosts that long. Wrong.
3456 Somebody had a whole pile of complicated expansion conditions, and the
3457 string was silently truncated, leading to an expansion error. It turns out
3458 that it is easier to change to an unlimited length (owing to other changes
3459 that have happened since this code was originally written) than to build
3460 structure for giving a limitation error. The length of the item that
3461 expands into the list of hosts is now unlimited.
3462
346347. The lsearch lookup could not handle data where the length of text line was
3464 more than 4095 characters. Such lines were truncated, leading to shortened
3465 data being returned. It should now handle lines of any length.
3466
346748. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3468 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3469 ACL").
3470
347149. Cosmetic tidy to scripts like exicyclog that are generated by globally
3472 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3473 no longer happens in comment lines. A list of replacements is now placed
3474 at the head of all of the source files, except those whose only change is
3475 to replace PERL_COMMAND in the very first #! line.
3476
347750. Replaced the slow insertion sort in queue.c, for sorting the list of
3478 messages on the queue, with a bottom-up merge sort, using code contributed
3479 by Michael Haardt. This should make operations like -bp somewhat faster on
3480 large queues. It won't affect queue runners, except when queue_run_in_order
3481 is set.
3482
348351. Installed eximstats 1.31 in the distribution.
3484
348552. Added support for SRV lookups to the dnslookup router.
3486
348753. If an ACL referred to $message_body or $message_body_end, the value was not
3488 reset for any messages that followed in the same SMTP session.
3489
349054. The store-handling optimization for building very long strings was not
3491 differentiating between the different store pools. I don't think this
3492 actually made any difference in practice, but I've tidied it.
3493
349455. While running the routers to verify a sender address, $sender_address
3495 was still set to the sender address. This is wrong, because when routing to
3496 send a bounce to the sender, it would be empty. Therefore, I have changed
3497 it so that, while verifying a sender address, $sender_address is set to <>.
3498 (There is no change to what happens when verifying a recipient address.)
3499
350056. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3501 target A or AAAA records (if not already returned) without resetting the
3502 qualify_single or search_parents options of the DNS resolver. These are
3503 inappropriate in this case because the targets of MX and SRV records must
3504 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3505 target that, when qualified, matched something in the local domain. These
3506 two options are now turned off when doing these lookups.
3507
350857. It seems that at least some releases of Reiserfs (which does not have the
3509 concept of a fixed number of inodes) returns zero and not -1 for the
3510 number of available inodes. This interacted badly with check_spool_inodes,
3511 which assumed that -1 was the "no such thing" setting. What I have done is
3512 to check that the total number of inodes is greater than zero before doing
3513 the test of how many are available.
3514
351558. When a "warn" ACL statement has a log_message modifier, the message is
3516 remembered, and not repeated. This is to avoid a lot of repetition when a
3517 message has many recipients that cause the same warning to be written.
3518 Howewer, Exim was preserving the list of already written lines for an
3519 entire SMTP session, which doesn't seem right. The memory is now reset if a
3520 new message is started.
3521
352259. The "rewrite" debugging flag was not showing the result of rewriting in the
3523 debugging output unless log_rewrite was also set.
3524
352560. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3526 of (int)(handle) when we know that handle contains (void *)(-1).
3527
352861. The Exim daemon panic-logs an error return when it closes the incoming
3529 connection. However "connection reset by peer" seems to be common, and
3530 isn't really an error worthy of noting specially, so that particular error
3531 is no long logged.
3532
353362. When Exim is trying to find all the local interfaces, it used to panic and
3534 die if the ioctl to get the interface flags failed. However, it seems that
3535 on at least one OS (Solaris 9) it is possible to have an interface that is
3536 included in the list of interfaces, but for which you get a failure error
3537 for this call. This happens when the interface is not "plumbed" into a
3538 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3539 failure of the "get flags" call assumes that the interface is down.
3540
354163. Added a ${eval10: operator, which assumes all numbers are decimal. This
3542 makes life easier for people who are doing arithmetic on fields extracted
3543 from dates, where you often get leading zeros that should not be
3544 interpreted as octal.
3545
354664. Added qualify_domain to the redirect router, to override the global
3547 setting.
3548
354965. If a pathologically long header line contained very many addresses (the
3550 report of this problem mentioned 10 000) and each of them was rewritten,
3551 Exim could use up a very large amount of memory. (It kept on making new
3552 copies of the header line as it rewrote, and never released the old ones.)
3553 At the expense of a bit more processing, the header rewriting function has
3554 been changed so that it no longer eats memory in this way.
3555
355666. The generation of the Received: header has been moved from the time that a
3557 message starts to be received, to the time that it finishes. The timestamp
3558 in the Received: header should now be very close to that of the <= log
3559 line. There are two side-effects of this change:
3560
3561 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3562 logged header lines no longer include the local Received: line, because
3563 it has not yet been created. The same applies to a copy of the message
3564 that is returned to a non-SMTP sender when a message is rejected.
3565
3566 (b) When a filter file is tested using -bf, no additional Received: header
3567 is added to the test message. After some thought, I decided that this
3568 is a bug fix.
3569
3570 This change does not affect the value of $received_for. It is still set
3571 after address rewriting, but before local_scan() is called.
3572
357367. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3574
357568. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3576 gave an unhelpful panic error message, and a defer error. I have managed to
3577 change this behaviour so that it now rejects any supplied certificate,
3578 which seems right, as the list of acceptable certificates is empty.
3579
358069. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3581 gave an unhelpful defer error. I have not managed to make this reject any
3582 supplied certificates, but the error message it gives is "no certificate
3583 supplied", which is not helpful.
3584
358570. exigrep's output now also includes lines that are not associated with any
3586 message, but which match the given pattern. Implemented by a patch from
3587 Martin Sluka, which also tidied up the Perl a bit.
3588
358971. Recipient callout verification, like sender verification, was using <> in
3590 the MAIL FROM command. This isn't really the right thing, since the actual
3591 sender may affect whether the remote host accepts the recipient or not. I
3592 have changed it to use the actual sender in the callout; this means that
3593 the cache record is now keyed on a recipient/sender pair, not just the
3594 recipient address. There doesn't seem to be a real danger of callout loops,
3595