Improved the '($parent) =' pattern match (Daniel Tiefnig)
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
4311097e 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.477 2007/02/08 15:16:19 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
9c57cbc0
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
PH
76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
PH
78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
4c590bd1
PH
80PH/18 Flush SMTP output before performing a callout, unless control =
81 no_callout_flush is set.
82
09945f1e
PH
83PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
84 was true (the default) a successful delivery failed to delete the retry
85 item, thus causing premature timeout of the address. The bug is now
86 fixed.
87
c51b8e75
PH
88PH/20 Added hosts_avoid_pipelining to the smtp transport.
89
e28326d8
PH
90PH/21 Long custom messages for fakedefer and fakereject are now split up
91 into multiline reponses in the same way that messages for "deny" and
92 other ACL rejections are.
93
75b1493f
PH
94PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
95 with slight modification.
96
7c5214ec
PH
97PH/23 Applied sieve patches from the maintainer "tracking the latest notify
98 draft, changing the syntax and factoring some duplicate code".
99
4311097e
PH
100PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
101 for deliveries of the second and subsequent messages over the same SMTP
102 connection.
103
b4ed4da0 104
5dd1517f
PH
105Exim version 4.66
106-----------------
107
108PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
109 fixed by 4.65/MH/01 (is this a record?) are fixed:
110
111 (i) An empty string was always treated as zero by the numeric comparison
112 operators. This behaviour has been restored.
113
114 (ii) It is documented that the numeric comparison operators always treat
115 their arguments as decimal numbers. This was broken in that numbers
116 starting with 0 were being interpreted as octal.
117
118 While fixing these problems I realized that there was another issue that
119 hadn't been noticed. Values of message_size_limit (both the global option
120 and the transport option) were treated as octal if they started with 0.
121 The documentation was vague. These values are now always treated as
122 decimal, and I will make that clear in the documentation.
123
124
93cfa765
TK
125Exim version 4.65
126-----------------
127
128TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
129 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
130 versions. (#438)
131
d6066548
MH
132MH/01 Don't check that the operands of numeric comparison operators are
133 integers when their expansion is in "skipping" mode (fixes bug
134 introduced by 4.64-PH/07).
135
4362ff0d
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136PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
137 child addresses, Exim now panics and dies. Previously, because the count
138 is held in a short int, deliveries were likely to be lost. As such a
139 large number of recipients for a single message is ridiculous
140 (performance will be very, very poor), I have chosen to impose a limit
141 rather than extend the field.
142
93cfa765 143
944e9e9c
TF
144Exim version 4.64
145-----------------
aa41d2de 146
21d74bd9
TK
147TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
148 leftover -K file (the existence of which was triggered by #402).
149 While we were at it, introduced process PID as part of the -K
150 filename. This should rule out race conditions when creating
151 these files.
152
153TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
154 processing considerably. Previous code took too long for large mails,
155 triggering a timeout which in turn triggers #401.
156
157TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
158 in the DK code in transports.c. sendfile() is not really portable,
159 hence the _LINUX specificness.
944e9e9c
TF
160
161TF/01 In the add_headers option to the mail command in an Exim filter,
162 there was a bug that Exim would claim a syntax error in any
163 header after the first one which had an odd number of characters
164 in the field name.
165
2b1c6e3a
PH
166PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
167 callout verification, Exim cached a "reject" for the entire domain. This
168 is correct for most verifications, but it is not correct for a recipient
169 verification with use_sender or use_postmaster set, because in that case
170 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
171 case of MAIL FROM:<> rejection from other early rejections (e.g.
172 rejection of HELO). When verifying a recipient using a non-null MAIL
173 address, the cache is ignored if it shows MAIL FROM:<> rejection.
174 Whatever the result of the callout, the value of the domain cache is
175 left unchanged (for any other kind of callout, getting as far as trying
176 RCPT means that the domain itself is ok).
177
1f872c80
PH
178PH/02 Tidied a number of unused variable and signed/unsigned warnings that
179 gcc 4.1.1 threw up.
180
181PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
182 manifest itself as EPIPE rather than ECONNECT. When tidying away a
183 session, the daemon ignores ECONNECT errors and logs others; it now
184 ignores EPIPE as well.
185
d203e649
PH
186PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
187 (quoted-printable decoding).
188
cc2ed8f7 189PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 190 later the small subsequent patch to fix an introduced bug.
f951fd57 191
ddfcd446
PH
192PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
193
d45b1de8
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194PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
195
196PH/08 An error is now given if message_size_limit is specified negative.
197
38a0a95f 198PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 199 to be given (somewhat) arbitrary names.
38a0a95f 200
a2405d83
JJ
201JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
202 in 4.64-PH/09.
203
204JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
205 miscellaneous code fixes
206
6ea85e9a
PH
207PH/10 Added the log_reject_target ACL modifier to specify where to log
208 rejections.
209
26da7e20
PH
210PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
211 hostname. This is wrong, because it relates to the incoming message (and
212 probably the interface on which it is arriving) and not to the outgoing
213 callout (which could be using a different interface). This has been
214 changed to use the value of the helo_data option from the smtp transport
215 instead - this is what is used when a message is actually being sent. If
216 there is no remote transport (possible with a router that sets up host
217 addresses), $smtp_active_hostname is used.
6ea85e9a 218
14aa5a05 219PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 220 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
221 (a) The code assumed that strncpy() returns a negative number on buffer
222 overflow, which isn't the case. Replaced with Exim's string_format()
223 function.
224 (b) There were several signed/unsigned issues. I just did the minimum
225 hacking in of casts. There is scope for a larger refactoring.
226 (c) The code used strcasecmp() which is not a standard C function.
227 Replaced with Exim's strcmpic() function.
228 (d) The code set only $1; it now sets $auth1 as well.
229 (e) A simple test gave the error "authentication client didn't specify
230 service in request". It would seem that Dovecot has changed its
231 interface. Fortunately there's a specification; I followed it and
232 changed what the client sends and it appears to be working now.
233
ff75a1f7
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234PH/13 Added $message_headers_raw to provide the headers without RFC 2047
235 decoding.
236
e6f6568e
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237PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
238 address A is aliased to B and C, where B exists and C does not. Without
239 -v the output is "A verified" because verification stops after a
240 successful redirection if more than one address is generated. However,
241 with -v the child addresses are also verified. Exim was outputting "A
242 failed to verify" and then showing the successful verification for C,
243 with its parentage. It now outputs "B failed to verify", showing B's
244 parentage before showing the successful verification of C.
245
d6f6e0dc
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246PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
247 look up a TXT record in a specific list after matching in a combined
248 list.
249
322050c2
PH
250PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
251 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
252 they consult the DNS. I had assumed they would set it the way they
253 wanted; and indeed my experiments on Linux seem to show that in some
254 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
255 To be on the safe side, however, I have now made the interface to
256 host_find_byname() similar to host_find_bydns(), with an argument
257 containing the DNS resolver options. The host_find_byname() function now
258 sets these options at its start, just as host_find_bydns() does. The smtp
259 transport options dns_qualify_single and dns_search_parents are passed to
260 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
261 of host_find_byname() use the default settings of RES_DEFNAMES
262 (qualify_single) but not RES_DNSRCH (search_parents).
263
08955dd3
PH
264PH/17 Applied (a modified version of) Nico Erfurth's patch to make
265 spool_read_header() do less string testing, by means of a preliminary
266 switch on the second character of optional "-foo" lines. (This is
267 overdue, caused by the large number of possibilities that now exist.
268 Originally there were few.) While I was there, I also converted the
269 str(n)cmp tests so they don't re-test the leading "-" and the first
270 character, in the hope this might squeeze out yet more improvement.
271
1eccaa59
PH
272PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
273 flag allowing group syntax was set by the header_syntax check but not
274 turned off, possible causing trouble later; (2) The flag was not being
275 set at all for the header_verify test, causing "group"-style headers to
276 be rejected. I have now set it in this case, and also caused header_
277 verify to ignore an empty address taken from a group. While doing this, I
278 came across some other cases where the code for allowing group syntax
279 while scanning a header line wasn't quite right (mostly, not resetting
280 the flag correctly in the right place). These bugs could have caused
281 trouble for malformed header lines. I hope it is now all correct.
282
602e59e5
PH
283PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
284 with the "reply" argument non-NULL. The code, however (which originally
285 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
286 but it didn't always do it. This confused somebody who was copying the
287 code for some other use. I have removed all the tests.
288
411ef850
PH
289PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
290 feature that was used to support insecure browsers during the U.S. crypto
291 embargo. It requires special client support, and Exim is probably the
292 only MTA that supported it -- and would never use it because real RSA is
293 always available. This code has been removed, because it had the bad
294 effect of slowing Exim down by computing (never used) parameters for the
295 RSA_EXPORT functionality.
296
7befa435
PH
297PH/21 On the advice of Timo Sirainen, added a check to the dovecot
298 authenticator to fail if there's a tab character in the incoming data
299 (there should never be unless someone is messing about, as it's supposed
300 to be base64-encoded). Also added, on Timo's advice, the "secured" option
301 if the connection is using TLS or if the remote IP is the same as the
302 local IP, and the "valid-client-cert option" if a client certificate has
303 been verified.
304
48da4259 305PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
306 authenticators. This can be used for authorization after authentication
307 succeeds. (In the case of plaintext, it servers for both authentication
308 and authorization.)
309
48da4259
PH
310PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
311 if any retry times were supplied.
312
d1d5595c
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313PH/24 Exim crashed if verify=helo was activated during an incoming -bs
314 connection, where there is no client IP address to check. In this
315 situation, the verify now always succeeds.
316
0ef732d9
PH
317PH/25 Applied John Jetmore's -Mset patch.
318
328895cc
PH
319PH/26 Added -bem to be like -Mset, but loading a message from a file.
320
fd700877
PH
321PH/27 In a string expansion for a processed (not raw) header when multiple
322 headers of the same name were present, leading whitespace was being
323 removed from all of them, but trailing whitespace was being removed only
324 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
325 before concatenation. Completely empty headers in a concatenation (as
326 before) are ignored.
fd700877 327
8dce1a6f
PH
328PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
329 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
330
17af4a17
PH
331PH/29 [Removed. This was a change that I later backed out, and forgot to
332 correct the ChangeLog entry (that I had efficiently created) before
333 committing the later change.]
f6c332bd
PH
334
335PH/30 Exim was sometimes attempting to deliver messages that had suffered
336 address errors (4xx response to RCPT) over the same connection as other
337 messages routed to the same hosts. Such deliveries are always "forced",
338 so retry times are not inspected. This resulted in far too many retries
339 for the affected addresses. The effect occurred only when there were more
340 hosts than the hosts_max_try setting in the smtp transport when it had
341 the 4xx errors. Those hosts that it had tried were not added to the list
342 of hosts for which the message was waiting, so if all were tried, there
343 was no problem. Two fixes have been applied:
344
345 (i) If there are any address or message errors in an SMTP delivery, none
346 of the hosts (tried or untried) are now added to the list of hosts
347 for which the message is waiting, so the message should not be a
348 candidate for sending over the same connection that was used for a
349 successful delivery of some other message. This seems entirely
350 reasonable: after all the message is NOT "waiting for some host".
351 This is so "obvious" that I'm not sure why it wasn't done
352 previously. Hope I haven't missed anything, but it can't do any
353 harm, as the worst effect is to miss an optimization.
354
355 (ii) If, despite (i), such a delivery is accidentally attempted, the
356 routing retry time is respected, so at least it doesn't keep
357 hammering the server.
358
c1114884
PH
359PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
360 in ${readsocket because some servers need this prod.
361
7a0743eb
PH
362PH/32 Added some extra debug output when updating a wait-xxx database.
363
0d85fa3f
PH
364PH/33 The hint "could be header name not terminated by colon", which has been
365 given for certain expansion errors for a long time, was not being given
366 for the ${if def:h_colon_omitted{... case.
367
1bf43b78
PH
368PH/34 The spec says: "With one important exception, whenever a domain list is
369 being scanned, $domain contains the subject domain." There was at least
370 one case where this was not true.
371
520de300
PH
372PH/35 The error "getsockname() failed: connection reset by peer" was being
373 written to the panic log as well as the main log, but it isn't really
374 panic-worthy as it just means the connection died rather early on. I have
375 removed the panic log writing for the ECONNRESET error when getsockname()
376 fails.
377
48c7f9e2
PH
378PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
379 runs only) independently of the message's sender address. This meant
380 that, if the 4xx error was in fact related to the sender, a different
381 message to the same recipient with a different sender could confuse
382 things. In particualar, this can happen when sending to a greylisting
383 server, but other circumstances could also provoke similar problems.
384 I have changed the default so that the retry time for these errors is now
385 based a combination of the sender and recipient addresses. This change
386 can be overridden by setting address_retry_include_sender=false in the
387 smtp transport.
388
99ea1c86
PH
389PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
390 remote server are returned as part of bounce messages. This was not
391 happening for LMTP over a pipe (the lmtp transport), but now it is the
392 same for both kinds of LMTP.
393
a2042e78
PH
394PH/38 Despite being documented as not happening, Exim was rewriting addresses
395 in header lines that were in fact CNAMEs. This is no longer the case.
396
4fbcfc2e
PH
397PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
398 and queue runs started by the daemon processed all messages. This has
399 been fixed so that -R and -S can now usefully be given with -q<time>.
400
aa41d2de
PH
401PH/40 Import PCRE release 6.7 (fixes some bugs).
402
af561417
PH
403PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
404
3cc66b45
PH
405PH/42 Give an error if -q is specified more than once.
406
194cc0e4
PH
407PH/43 Renamed the variables $interface_address and $interface_port as
408 $received_ip_address and $received_port, to make it clear that these
409 values apply to message reception, and not to the outgoing interface when
410 a message is delivered. (The old names remain recognized, of course.)
411
a401ddaa
PH
412PH/44 There was no timeout on the connect() call when using a Unix domain
413 socket in the ${readsocket expansion. There now is.
414
4e88a19f
PH
415PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
416 be meaningful with "accept".
417
d7d7b289
SC
418SC/01 Eximstats V1.43
419 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
420
421SC/02 Eximstats V1.44
422 Use a glob alias rather than an array ref in the generated
423 parser. This improves both readability and performance.
424
425SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
426 Collect SpamAssassin and rejection statistics.
427 Don't display local sender or destination tables unless
428 there is data to show.
429 Added average volumes into the top table text output.
430
431SC/04 Eximstats V1.46
432 Collect data on the number of addresses (recipients)
433 as well as the number of messages.
434
435SC/05 Eximstats V1.47
436 Added 'Message too big' to the list of mail rejection
437 reasons (thanks to Marco Gaiarin).
438
439SC/06 Eximstats V1.48
440 Mainlog lines which have GMT offsets and are too short to
441 have a flag are now skipped.
442
443SC/07 Eximstats V1.49 (Alain Williams)
444 Added the -emptyok flag.
445
446SC/08 Eximstats V1.50
447 Fixes for obtaining the IP address from reject messages.
448
0ea2a468
JJ
449JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
450 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
451 whitesspace changes from 4.64-PH/27
452
453JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
454 match 4.64-PH/13
455
456JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
457 are found, allow negative numbers in numeric criteria)
458
459JJ/06 exipick.20061117.2, added new $message_body_missing variable
460
461JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
462 to match changes made in 4.64-PH/43
463
8a10f5a4
PH
464PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
465
30e18802
PH
466PH/47 Put in an explicit test for a DNS lookup of an address record where the
467 "domain" is actually an IP address, and force a failure. This locks out
468 those revolvers/nameservers that support "A-for-A" lookups, in
469 contravention of the specifications.
470
55728a4f
PH
471PH/48 When a host name was looked up from an IP address, and the subsequent
472 forward lookup of the name timed out, the host name was left in
473 $sender_host_name, contrary to the specification.
d7d7b289 474
d7837193
PH
475PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
476 restricted to single-key lookups, Exim was not diagnosing an error if
477 * or *@ was used with a query-style lookup.
478
87054a31
PH
479PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
480
ea2c01d2
MH
481MH/01 local_scan ABI version incremented to 1.1. It should have been updated
482 long ago, but noone interested enough thought of it. Let's just say that
483 the "1.1" means that there are some new functions that weren't there at
484 some point in the past.
485
e4fa6968
PH
486PH/51 Error processing for expansion failure of helo_data from an smtp
487 transport during callout processing was broken.
488
56f5d9bd
PH
489PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
490 tested/used via the -bh/-bhc/-bs options.
491
922e1c28
PH
492PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
493 bug, fixed in subsequent PCRE releases).
494
21eb6e72
PH
495PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
496 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
497
a0540757
PH
498PH/55 Check for a ridiculously long file name in exim_dbmbuild.
499
944e9e9c 500
478be7b0
SC
501Exim version 4.63
502-----------------
503
504SC/01 Use a glob alias rather than an array ref in eximstats generated
505 parser. This improves both readability and performance.
506
507SC/02 Collect SpamAssassin and rejection statistics in eximstats.
508 Don't display local sender or destination tables in eximstats unless
509 there is data to show.
510 Added average volumes into the eximstats top table text output.
511
512SC/03 Collect data on the number of addresses (recipients) as well
513 as the number of messages in eximstats.
514
2b965a65
TF
515TF/01 Correct an error in the documentation for the redirect router. Exim
516 does (usually) call initgroups() when daemonizing.
478be7b0 517
45b91596
PH
518TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
519 with consistent privilege compared to when running as a daemon.
478be7b0 520
c59f5781
TF
521TF/03 Note in the spec that $authenticated_id is not set for local
522 submissions from trusted users.
523
90fc3069
TF
524TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
525 Thanks to Dean Brooks <dean@iglou.com> for the patch.
526
6083aca0
TF
527TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
528 by adding some example configuration directives to the default
529 configuration file. A little bit of work is required to uncomment the
530 directives and define how usernames and passwords are checked, but
531 there is now a framework to start from.
532
765b530f
PH
533PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
534 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
535 without this. I don't know how relevant this is to other LDAP libraries.
536
4e167a8c
PH
537PH/02 Add the verb name to the "unknown ACL verb" error.
538
4608d683
PH
539PH/03 Magnus Holmgren's patch for filter_prepend_home.
540
b8dc3e4a
PH
541PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
542
5418e93b
PH
543PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
544 directory not expanded when it should be if an expanded home directory
545 was set for the address (which is overridden by the transport).
546
b4a9bda2
PH
547PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
548 libradius.
549
45b91596
PH
550PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
551 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
552 because it is too late at that time, and has no effect.
553
5547e2c5
PH
554PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
555 security issue with \' (bugzilla #107). I could not use the
556 PQescapeStringConn() function, because it needs a PGconn value as one of
557 its arguments.
558
dbcef0ea
PH
559PH/08 When testing addresses using -bt, indicate those final addresses that
560 are duplicates that would not cause an additional delivery. At least one
561 person was confused, thinking that -bt output corresponded to deliveries.
562 (Suppressing duplicates isn't a good idea as you lose the information
563 about possibly different redirections that led to the duplicates.)
564
25257489
PH
565PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
566 systems where poll() doesn't work, in particular OS X.
567
c816d124
PH
568PH/10 Added more information to debugging output for retry time not reached.
569
a9ccd69a
PH
570PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
571 operations in malware.c.
572
75fa1910
PH
573PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
574 signatures.
575
a7d7aa58
PH
576PH/13 If write_rejectlog was set false when logging was sent to syslog with
577 syslog_duplication set false, log lines that would normally be written
578 both the the main log and to the reject log were not written to syslog at
579 all.
580
42119b09
PH
581PH/14 In the default configuration, change the use of "message" in ACL warn
582 statements to "add_header".
583
41609df5
PH
584PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
585 not followed by a command (e.g. "seen endif").
586
a5bd321b
PH
587PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
588 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
589 latter.
590
e85a7ad5 591PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
592 so that it is now:
593
e85a7ad5
PH
594 ${if or { \
595 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
596 { match{$h_precedence:}{(?i)bulk|list|junk} } \
597 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
598 }{no}{yes}}
599
e85a7ad5
PH
600 The Auto-Submitted: and various List- headers are standardised, whereas I
601 don't think Precedence: ever was.
5dff5817 602
d8fe1c03
PH
603PH/18 Refactored debugging code in route_finduser() to show more information,
604 in particular, the error code if getpwnam() issues one.
605
16282d2b
PH
606PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
607 This is apparently needed in addition to the PH/07 change above to avoid
608 any possible encoding problems.
609
35d40a98
PH
610PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
611 but not after initializing Perl.
612
034d99ab
PH
613PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
614 output them only if debugging. By default they are written stderr,
615 apparently, which is not desirable.
616
6ec97b1b
PH
617PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
618 queries.
619
e22ca4ac
JJ
620JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
621 --not options
622
623JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
624
33d73e3b
PH
625PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
626 authenticated or an ident call has been made. Suppress the default
627 values for $authenticated_id and $authenticated_sender (but permit -oMai
628 and -oMas) when testing with -bh.
629
9ecb03f3
PH
630PH/24 Re-jigged the order of the tests in the default configuration so that the
631 tests for valid domains and recipients precede the DNS black list and CSA
632 tests, on the grounds that those ones are more expensive.
633
084efe8d
PH
634PH/25 Exim was not testing for a space following SMTP commands such as EHLO
635 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
636 This bug exists in every version of Exim that I still have, right back to
637 0.12.
638
366fc9f0
PH
639PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
640 However, an attempt to turn on case-sensitivity in a regex key by
641 including (?-i) didn't work because the subject string was already
642 lowercased, and the effects were non-intuitive. It turns out that a
643 one-line patch can be used to allow (?-i) to work as expected.
644
c59f5781 645
c887c79e
TF
646Exim version 4.62
647-----------------
648
649TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
650 other effects) broke the use of negated acl sub-conditions.
651
1cce3af8
PH
652PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
653 patch).
654
afb3eaaf
PH
655PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
656 "Deny" causes Exim to reject the incoming connection with a 554 error.
657 Unfortunately, if there is a major crisis, such as a disk failure,
658 tcp-wrappers gives "deny", whereas what one would like would be some
659 kind of temporary error. A kludge has been added to help with this.
660 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
661 554 error is used if errno is still zero or contains ENOENT (which occurs
662 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
663 451 error is used.
664
e173618b
PH
665PH/03 Add -lutil to the default FreeBSD LIBS setting.
666
dd16e114
PH
667PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
668 errors. Otherwise a message that provokes a temporary error (when other
669 messages do not) can cause a whole host to time out.
670
f7fd3850
PH
671PH/05 Batch deliveries by appendfile and pipe transports did not work when the
672 addresses were routed directly to files or pipes from a redirect router.
673 File deliveries just didn't batch; pipe deliveries might have suffered
674 odd errors.
675
d87df92c
PH
676PH/06 A failure to get a lock for a hints database would erroneously always say
677 "Failed to get write lock", even when it was really a read lock.
678
7e9f683d
PH
679PH/07 The appendfile transport was creating MBX lock files with a fixed mode
680 of 0600. This has been changed to use the value of the lockfile_mode
681 option (which defaults to 0600).
682
bfad5236
PH
683PH/08 Applied small patch from the Sieve maintainer.
684
01c490df
PH
685PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
686 folder from quota calculations, a direct delivery into this folder messed
687 up the contents of the maildirsize file. This was because the regex was
688 used only to exclude .Trash (or whatever) when the size of the mailbox
689 was calculated. There was no check that a delivery was happening into an
690 excluded directory. This bug has been fixed by ignoring all quota
691 processing for deliveries into excluded directories.
692
d6629cdc
PH
693PH/10 Added the maildirfolder_create_regex option to appendfile.
694
1cce3af8 695
214e2000
PH
696Exim version 4.61
697-----------------
698
699PH/01 The code for finding all the local interface addresses on a FreeBSD
700 system running IPv6 was broken. This may well have applied to all BSD
701 systems, as well as to others that have similar system calls. The broken
702 code found IPv4 interfaces correctly, but gave incorrect values for the
703 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
704 that it would not match correctly against @[] and not recognize the IPv6
705 addresses as local.
706
f9daeae0
PH
707PH/02 The ipliteral router was not recognizing addresses of the form user@
708 [ipv6:....] because it didn't know about the "ipv6:" prefix.
709
7e66e54d
PH
710PH/03 Added disable_ipv6.
711
c8ea1597
PH
712PH/04 Changed $reply_address to use the raw form of the headers instead of the
713 decoded form, because it is most often used to construct To: headers
714 lines in autoreplies, and the decoded form may well be syntactically
715 invalid. However, $reply_address has leading white space removed, and all
716 newlines turned into spaces so that the autoreply transport does not
717 grumble.
718
911f6fde
PH
719PH/05 If group was specified without a user on a router, and no group or user
720 was specified on a transport, the group from the router was ignored.
721
47ca6d6c
PH
722PH/06 Increased the number of ACL variables to 20 of each type, and arranged
723 for visible compile-time settings that can be used to change these
724 numbers, for those that want even more. Backwards compatibility with old
725 spool files has been maintained. However, going back to a previous Exim
726 release will lost any variables that are in spool files.
727
ed0e9820
PH
728PH/07 Two small changes when running in the test harness: increase delay when
729 passing a TCP/IP connection to a new process, in case the original
730 process has to generate a bounce, and remove special handling of
731 127.0.0.2 (sic), which is no longer necessary.
732
eff37e47
PH
733PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
734 be the same on different OS.
735
1921d2ea
PH
736PH/09 Moved a debug statement in filter processing to avoid a race problem when
737 testing.
738
b3f69ca8
JJ
739JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
740 whether --show-vars was specified or not
741
742JJ/02 exipick: Added support for new ACL variable spool format introduced
743 in 4.61-PH/06
744
424a1c63
PH
745PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
746 syntactically invalid From: or Reply-to: line, and a filter used this to
747 generate an autoreply, and therefore failed to obtain an address for the
748 autoreply, Exim could try to deliver to a non-existent relative file
749 name, causing unrelated and misleading errors. What now happens is that
750 it logs this as a hard delivery error, but does not attempt to create a
751 bounce message.
752
7a100415
PH
753PH/11 The exinext utility has a -C option for testing purposes, but although
754 the given file was scanned by exinext itself; it wasn't being passed on
755 when Exim was called.
756
19b9dc85
PH
757PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
758 an end-of-file indication when reading a command response.
759
309bd837
PH
760PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
761 compiled. In many other places in Exim, IPv6 addresses are always
762 recognized, so I have changed this. It also means that IPv4 domain
763 literals of the form [IPV4:n.n.n.n] are now always recognized.
764
59e82a2a
PH
765PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
766 used if the router is not running as root, for example, when verifying at
767 ACL time, or when using -bh. The debugging output from this situation was
768 non-existent - all you got was a failure to exec. I have made two
769 changes:
770
771 (a) Failures to set uid/gid, the current directory, or a process leader
772 in a subprocess such as that created by queryprogram now generate
773 suitable debugging ouput when -d is set.
774
775 (b) The queryprogram router detects when it is not running as root,
776 outputs suitable debugging information if -d is set, and then runs
777 the subprocess without attempting to change uid/gid.
778
9edc04ce
PH
779PH/15 Minor change to Makefile for building test_host (undocumented testing
780 feature).
781
1349e1e5
PH
782PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
783 additional section of a DNS packet that returns MX or SRV records.
784 Instead, it always explicitly searches for A/AAAA records. This avoids
785 major problems that occur when a DNS server includes only records of one
786 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
787 fixed another bug: if SRV records were looked up and the corresponding
788 address records were *not* found in the additional section, the port
789 values from the SRV records were lost.
790
ea49d0e1
PH
791PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
792 using the correct key (the original address) when searching the retry
793 rules in order to find which one to use for generating the retry hint.
794
064a94c9
PH
795PH/18 If quota_warn_message contains a From: header, Exim now refrains from
796 adding the default one. Similarly, if it contains a Reply-To: header, the
797 errors_reply_to option, if set, is not used.
798
727071f8
PH
799PH/19 When calculating a retry time, Exim used to measure the "time since
800 failure" by looking at the "first failed" field in the retry record. Now
801 it does not use this if it is later than than the arrival time of the
802 message. Instead it uses the arrival time. This makes for better
803 behaviour in cases where some deliveries succeed, thus re-setting the
804 "first failed" field. An example is a quota failure for a huge message
805 when small messages continue to be delivered. Without this change, the
806 "time since failure" will always be short, possible causing more frequent
807 delivery attempts for the huge message than are intended.
dd16e114 808 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 809
f78eb7c6
PH
810PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
811 $1, $2, $3) because the numerical variables can be reset during some
812 expansion items (e.g. "match"), thereby losing the authentication data.
813
21c28500
PH
814PH/21 Make -bV show the size of off_t variables so that the test suite can
815 decide whether to run tests for quotas > 2G.
816
817PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
818 mailbox_size, and mailbox_filecount in the appendfile transport. If a
819 filecount value is greater than 2G or if a quota value is greater than 2G
820 on a system where the size of off_t is not greater than 4, a panic error
821 is given.
822
1688f43b
PH
823PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
824 never match. The debug and -bh output now contains an explicit error
825 message indicating a malformed IPv4 address or mask.
826
827PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
828 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
829 PH/23 above applies.
830
9675b384
PH
831PH/25 Do not write to syslog when running in the test harness. The only
832 occasion when this arises is a failure to open the main or panic logs
833 (for which there is an explicit test).
834
6a3f1455
PH
835PH/26 Added the /no_tell option to "control=freeze".
836
dac79d3e
PH
837PH/27 If a host name lookup failed very early in a connection, for example, if
838 the IP address matched host_lookup and the reverse lookup yielded a name
839 that did not have a forward lookup, an error message of the form "no IP
840 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
841 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 842
5977a0b3
PH
843PH/28 An enabling patch from MH: add new function child_open_exim2() which
844 allows the sender and the authenticated sender to be set when
845 submitting a message from within Exim. Since child_open_exim() is
846 documented for local_scan(), the new function should be too.
847
c91535f3
PH
848PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
849 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
850 results in an empty string is now treated as unset.
851
0d46a8c8
PH
852PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
853
278c6e6c
PH
854PH/31 Added sender_verify_fail logging option.
855
2cbb4081
PH
856PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
857 needed by RFC 822 but not by RFC 2822 was commented out. I have now
858 tidied the source and removed it altogether.
859
3eef829e
PH
860PH/33 When a queue run was abandoned because the load average was too high, a
861 log line was always written; now it is written only if the queue_run log
862 selector is set. In addition, the log line for abandonment now contains
863 information about the queue run such as the pid. This is always present
864 in "start" and "stop" lines but was omitted from the "abandon" line.
865
1ab95fa6
PH
866PH/34 Omit spaces between a header name and the colon in the error message that
867 is given when verify = headers_syntax fails (if there are lots of them,
868 the message gets confusing).
869
230205fc
PH
870PH/35 Change the default for dns_check_names_pattern to allow slashes within
871 names, as there are now some PTR records that contain slashes. This check
872 is only to protect against broken name servers that fall over on strange
873 characters, so the fact that it applies to all lookups doesn't matter.
874
75e0e026
PH
875PH/36 Now that the new test suite is complete, we can remove some of the
876 special code in Exim that was needed for the old test suite. For example,
877 sorting DNS records because real resolvers return them in an arbitrary
878 order. The new test suite's fake resolver always returns records in the
879 same order.
880
881PH/37 When running in the test harness, use -odi for submitted messages (e.g.
882 bounces) except when queue_only is set, to avoid logging races between
883 the different processes.
884
145396a6
PH
885PH/38 Panic-die if .include specifies a non-absolute path.
886
3cd34f13
PH
887PH/39 A tweak to the "H" retry rule from its user.
888
11121d3d
JJ
889JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
890 a label. They prevented compilation on older perls.
891
892JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
893 a warning to be raised on newish perls.
894
895JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
896 on queue. Changes to match documented behaviour of showing count of
897 messages matching specified criteria.
898
8def5aaf
PH
899PH/40 Changed the default ident timeout from 30s to 5s.
900
929ba01c
PH
901PH/41 Added support for the use of login_cap features, on those BSD systems
902 that have them, for controlling the resources used by pipe deliveries.
903
2632889e
PH
904PH/42 The content-scanning code uses fopen() to create files in which to put
905 message data. Previously it was not paying any attention to the mode of
906 the files. Exim runs with umask(0) because the rest of the code creates
907 files with open(), and sets the required mode explicitly. Thus, these
908 files were ending up world-writeable. This was not a big issue, because,
909 being within the spool directory, they were not world-accessible. I have
910 created a function called modefopen, which takes an additional mode
911 argument. It sets umask(777), creates the file, chmods it to the required
912 mode, then resets the umask. All the relevant calls to fopen() in the
913 content scanning code have been changed to use this function.
914
944a9c55
PH
915PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
916 to 24 hours. This avoids potential overflow problems when processing G
917 and H retry rules. I suspect nobody ever tinkers with this value.
918
4a23603b
PH
919PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
920
4730f942
PH
921PH/45 When the plaintext authenticator is running as a client, the server's
922 challenges are checked to ensure they are valid base64 strings. By
923 default, the authentication attempt is cancelled if an invalid string is
924 received. Setting client_ignore_invalid_base64 true ignores these errors.
925 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
926 they are received. Thus, the responses can be made to depend on the
927 challenges. If an invalid string is ignored, an empty string is placed in
928 the variable.
929
30dba1e6
PH
930PH/46 Messages that are created by the autoreply transport now contains a
931 References: header, in accordance with RFCs 2822 and 3834.
932
382afc6b
PH
933PH/47 Added authenticated_sender_force to the smtp transport.
934
a86229cf
PH
935PH/48 The ${prvs expansion was broken on systems where time_t was long long.
936
50c99ba6
PH
937PH/49 Installed latest patch from the Sieve maintainer.
938
d35e429d
PH
939PH/50 When an Exim quota was set without a file count quota, and mailbox_size
940 was also set, the appendfile transport was unnecessarily scanning a
941 directory of message files (e.g. for maildir delivery) to find the count
942 of files (along with the size), even though it did not need this
943 information. It now does the scan only if it needs to find either the
944 size of the count of files.
945
f90d018c
PH
946PH/51 Added ${time_eval: to convert Exim time strings into seconds.
947
75def545
PH
948PH/52 Two bugs concerned with error handling when the smtp transport is
949 used in LMTP mode:
950
951 (i) Exim was not creating retry information for temporary errors given
952 for individual recipients after the DATA command when the smtp transport
953 was used in LMTP mode. This meant that they could be retried too
954 frequently, and not timed out correctly.
955
956 (ii) Exim was setting the flag that allows error details to be returned
957 for LMTP errors on RCPT commands, but not for LMTP errors for individual
958 recipients that were returned after the DATA command.
959
960PH/53 This is related to PH/52, but is more general: for any failing address,
961 when detailed error information was permitted to be returned to the
962 sender, but the error was temporary, then after the final timeout, only
963 "retry timeout exceeded" was returned. Now it returns the full error as
964 well as "retry timeout exceeded".
965
c46782ef
PH
966PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
967 do this, and (what is worse) MTAs that accept it.
968
71fafd95
PH
969PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
970 will now be deprecated.
971
2c5db4fd
PH
972PH/56 New os.c-cygwin from the Cygwin maintainer.
973
9cf6b11a
JJ
974JJ/06 exipick: added --unsorted option to allow unsorted output in all output
975 formats (previously only available in exim formats via -bpr, -bpru,
976 and -bpra. Now also available in native and exiqgrep formats)
977
978JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
979 with very large, slow to parse queues
980
981JJ/08 exipick: added ! as generic prefix to negate any criteria format
982
983JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
984
898d150f
PH
985PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
986 responses to authentication challenges, though it was showing the
987 challenges; (ii) I've removed the CR characters from the debug output for
988 SMTP output lines.
989
46218253
PH
990PH/58 Allow for the insertion of a newline as well as a space when a string
991 is turned into more than one encoded-word during RFC 2047 encoding. The
992 Sieve code now uses this.
993
e97957bc
PH
994PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
995 data_4xx, lost_connection, tls_required.
996
81e509d7
PH
997PH/60 When a VRFY deferred or FAILED, the log message rather than the user
998 message was being sent as an SMTP response.
999
3d240ff7
PH
1000PH/61 Add -l and -k options to exicyclog.
1001
b37c4101
PH
1002PH/62 When verifying, if an address was redirected to one new address, so that
1003 verification continued, and the new address failed or deferred after
1004 having set something in $address_data, the value of $address_data was not
1005 passed back to the ACL. This was different to the case when no
1006 redirection occurred. The value is now passed back in both cases.
1007
79378e0f
PH
1008PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1009 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1010 use login_cap.h, so on its own it isn't the distinguishing feature. The
1011 new name refers directly to the setclassresources() function.
1012
e49c7bb4
PH
1013PH/65 Added configuration files for NetBSD3.
1014
d114ec46
PH
1015PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1016
f3d7df6c
PH
1017PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1018 is preferred over IPv4.
1019
715ab376
PH
1020PH/68 The bounce_return_message and bounce_return_body options were not being
1021 honoured for bounces generated during the reception of non-SMTP messages.
1022 In particular, this applied to messages rejected by the ACL. This bug has
1023 been fixed. However, if bounce_return_message is true and bounce_return_
1024 body is false, the headers that are returned for a non-SMTP message
1025 include only those that have been read before the error was detected.
1026 (In the case of an ACL rejection, they have all been read.)
1027
6b31b150
PH
1028PH/69 The HTML version of the specification is now built in a directory called
1029 spec_html instead of spec.html, because the latter looks like a path with
1030 a MIME-type, and this confuses some software.
1031
1032PH/70 Catch two compiler warnings in sieve.c.
1033
d515a917
PH
1034PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1035 function verify_get_ident() calls ip_connect() to connect a socket, but
1036 if the "connect()" function timed out, ip_connect() used to close the
1037 socket. However, verify_get_ident() also closes the socket later, and in
1038 between Exim writes to the log, which may get opened at this point. When
1039 the socket was closed in ip_connect(), the log could get the same file
1040 descriptor number as the socket. This naturally causes chaos. The fix is
1041 not to close the socket in ip_connect(); the socket should be closed by
1042 the function that creates it. There was only one place in the code where
1043 this was missing, in the iplookup router, which I don't think anybody now
1044 uses, but I've fixed it anyway.
1045
9b8fadde
PH
1046PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1047 well as to direct DNS lookups. Otherwise the handling of names in host
1048 lists is inconsistent and therefore confusing.
1049
214e2000 1050
5de37277
PH
1051Exim version 4.60
1052-----------------
1053
cc38ddbf
PH
1054PH/01 Two changes to the default runtime configuration:
1055
1056 (1) Move the checks for relay_from_hosts and authenticated clients from
1057 after to before the (commented out) DNS black list checks.
1058
1059 (2) Add control=submission to the relay_from_hosts and authenticated
1060 clients checks, on the grounds that messages accepted by these
1061 statements are most likely to be submissions.
5de37277 1062
72fdd6ae
PH
1063PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1064
1065 (1) Generate an error if the third argument for the ${prvs expansion is
1066 not a single digit.
1067
1068 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1069 string.
1070
1071 (3) Reset the variables that are obtained from the first argument of
1072 ${prvscheck and used in the second argument before leaving the code,
1073 because their memory is reclaimed, so using them afterwards may do
1074 silly things.
1075
1076 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1077 one (it's much easier than Tom thought :-).
1078
1079 (5) Because of (4), we can now allow for the use of $prvscheck_result
1080 inside the third argument.
cb9328de 1081
cb741023
PH
1082PH/03 For some reason, the default setting of PATH when running a command from
1083 a pipe transport was just "/usr/bin". I have changed it to
1084 "/bin:/usr/bin".
1085
f174f16e
PH
1086PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1087 anything to be listed in the output from -bV.
b2f5a032 1088
c25242d7
PH
1089PH/05 When a filter generated an autoreply, the entire To: header line was
1090 quoted in the delivery log line, like this:
1091
1092 => >A.N.Other <ano@some.domain> <original@ddress> ...
1093
1094 This has been changed so that it extracts the operative address. There
1095 may be more than one such address. If so, they are comma-separated, like
1096 this:
1097
1098 => >ano@some.domain,ona@other.domain <original@ddress> ...
1099
82c19f95
PH
1100PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1101 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1102 not being looked up in the rDNS to get a host name, Exim was showing the
1103 IP address twice in Received: lines, even though the IP addresses were
1104 identical. For example:
1105
1106 Received: from [1.2.3.4] (helo=[1.2.3.4])
1107
1108 However, if the real host name was known, it was omitting the HELO data
1109 if it matched the actual IP address. This has been tidied up so that it
1110 doesn't show the same IP address twice.
1111
d7ffbc12
PH
1112PH/07 When both +timestamp and +memory debugging was on, the value given by
1113 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1114 called by the debug printing, thereby overwriting the timestamp buffer.
1115 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1116
9f526266
PH
1117PH/08 When the original message was included in an autoreply transport, it
1118 always said "this is a copy of the message, including all the headers",
1119 even if body_only or headers_only was set. It now gives an appropriate
1120 message.
1121
87fcc8b9
PH
1122PH/09 Applied a patch from the Sieve maintainer which:
1123
1124 o fixes some comments
1125 o adds the (disabled) notify extension core
1126 o adds some debug output for the result of if/elsif tests
1127 o points to the current vacation draft in the documentation
1128 and documents the missing references header update
1129
1130 and most important:
1131
1132 o fixes a bug in processing the envelope test (when testing
1133 multiple envelope elements, the last element determinted the
1134 result)
1135
456682f5
PH
1136PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1137 Electronic Mail") by including:
1138
1139 Auto-submitted: auto-generated
1140
1141 in the messages that it generates (bounce messages and others, such as
1142 warnings). In the case of bounce messages for non-SMTP mesages, there was
1143 also a typo: it was using "Auto_submitted" (underscore instead of
1144 hyphen). Since every message generated by Exim is necessarily in response
1145 to another message, thes have all been changed to:
1146
1147 Auto-Submitted: auto-replied
1148
1149 in accordance with these statements in the RFC:
1150
1151 The auto-replied keyword:
1152
1153 - SHOULD be used on messages sent in direct response to another
1154 message by an automatic process,
1155
1156 - MUST NOT be used on manually-generated messages,
1157
1158 - MAY be used on Delivery Status Notifications (DSNs) and Message
1159 Disposition Notifications (MDNs),
1160
1161 - MUST NOT be used on messages generated by automatic or periodic
1162 processes, except for messages which are automatic responses to
1163 other messages.
1164
3e46c1aa
PH
1165PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1166 to the default Received: header definition.
456682f5 1167
49826d12
PH
1168PH/12 Added log selector acl_warn_skipped (default on).
1169
eba0c039
PH
1170PH/13 After a successful wildlsearch lookup, discard the values of numeric
1171 variables because (a) they are in the wrong storage pool and (b) even if
1172 they were copied, it wouldn't work properly because of the caching.
1173
a0d6ba8a
PH
1174PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1175 checking when decoding. Apparently there are clients that generate
1176 overlong encoded strings. Why am I not surprised?
1177
f0917727
PH
1178PH/15 If the first argument of "${if match_address" was not empty, but did not
1179 contain an "@" character, Exim crashed. Now it writes a panic log message
1180 and treats the condition as false.
1181
096fee00
PH
1182PH/16 In autoreply, treat an empty string for "once" the same as unset.
1183
024bd3c2
PH
1184PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1185 extension "envelope-auth". The code is finished and in agreement with
1186 other implementations, but there is no documentation so far and in fact,
1187 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1188 not changing the active code.
1189
1190 Print executed "if" and "elsif" statements when debugging is used. This
1191 helps a great deal to understand what a filter does.
1192
1193 Document more things not specified clearly in RFC3028. I had all this
1194 sorted out, when out of a sudden new issues came to my mind. Oops."
1195
df199fec
PH
1196PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1197 (Bugzilla #53).
1198
d27f1df3
PH
1199PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1200 canonical form (as documented). However, after a host name lookup from
1201 the IP address, check_host() was doing a simple string comparison with
1202 addresses acquired from the DNS when checking that the found name did
1203 have the original IP as one of its addresses. Since any found IPv6
1204 addresses are likely to be in abbreviated form, the comparison could
1205 fail. Luckily, there already exists a function for doing the comparison
1206 by converting both addresses to binary, so now that is used instead of
1207 the text comparison.
1208
96776534
PH
1209PH/20 There was another similar case to PH/19, when a complete host name was
1210 given in a host list; looking up its IP address could give an abbreviated
1211 form, whereas the current host's name might or might not be abbreviated.
1212 The same fix has been applied.
1213
5de37277 1214
9a799bc0
PH
1215Exim version 4.54
1216-----------------
1217
1218PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1219 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1220 It now does.
1221
99a4b039
PH
1222PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1223 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1224
1225PH/03 Typo: missing ".o" in src/pcre/Makefile.
1226
4b233853
PH
1227PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1228 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1229 Also, for "Auto-Submitted", treat anything other than "no" as
1230 non-personal, in accordance with RFC 3834. (Previously it treated
1231 anything starting "auto-" as non-personal.)
1232
8857ccfd
PH
1233TF/01 The control=submission/name=... option had a problem with syntax
1234 errors if the name included a slash character. The /name= option
1235 now slurps the rest of the string, so it can include any characters
1236 but it must come last in the list of options (after /sender_retain
1237 or /domain=).
1238
433a2980
PH
1239PH/05 Some modifications to the interface to the fake nameserver for the new
1240 testing suite.
1241
3e46c1aa 1242
9a799bc0 1243
e3a311ba
TK
1244Exim version 4.53
1245-----------------
1246
1247TK/01 Added the "success_on_redirect" address verification option. See
1248 NewStuff for rationale and an example.
1249
13b685f9
PH
1250PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1251
395ff96d
PH
1252PH/02 Patch to exigrep to allow it to work on syslog lines.
1253
5b68f6e4
PH
1254PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1255 fread() to skip over the body file's header line, because in Cygwin the
1256 header line is locked and is inaccessible.
1257
1ab52c69
PH
1258PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1259 co-exist for some time) to make it clear that it is the Exim ID that is
1260 referenced, not the Message-ID: header line.
1261
b07e6aa3
PH
1262PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1263 string_format() function, because snprintf() does not exist on all
1264 operating systems.
1265
254e032f
PH
1266PH/06 The use of forbid_filter_existstest now also locks out the use of the
1267 ${stat: expansion item.
1268
3af76a81
PH
1269PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1270 protocol synchronization error", to keep the pedants happy.
1271
2548ba04
PH
1272PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1273 well as for IRIX systems, when gcc is being used. See the host.c source
1274 file for comments.
1275
b6c6011d
PH
1276PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1277
cf39cf57
PH
1278PH/10 Named domain lists were not working if used in a queue_smtp_domains
1279 setting.
1280
f1513293
PH
1281PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1282 transport and to the smtp transport in LMTP mode.
1283
727549a4
PH
1284TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1285
af46795e
PH
1286PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1287 run a filter in a subprocess. This could lead to confusion in subsequent
1288 lookups in the parent process. There should also be a search_tidyup() at
1289 the end of the subprocess.
1290
d7b47fd0
PH
1291PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1292 only if the host matched helo_try_verify_hosts, which caused the
1293 verification to occur when the EHLO/HELO command was issued. The ACL just
1294 tested the remembered result. Now, if a previous verification attempt has
1295 not happened, "verify = helo" does it there and then.
1296
ee744174
JJ
1297JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1298
b582ab87
PH
1299TK/03 Fix log output including CR from clamd.
1300
41a13e0a
PH
1301PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1302 exist provoked a memory error which could cause a segfault.
1303
f625cc5a
PH
1304PH/15 Installed PCRE 6.2
1305
1306PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1307
21f7af35
PH
1308PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1309 of the problem. Specifically, suggested +O2 rather than +O1 for the
1310 HP-UX compiler.
1311
31480e42
PH
1312PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1313
2d280592
PH
1314PH/20 If a delivery was routed to a non-standard port by means of an SRV
1315 record, the port was not correctly logged when the outgoing_port log
1316 selector was set (it logged the transort's default port).
1317
7cd1141b
PH
1318PH/21 Added support for host-specific ports to manualroute, queryprogram,
1319 fallback_hosts, and "hosts" in the smtp transport.
1320
1321PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1322 host errors such as "Connection refused".
1323
750af86e
PH
1324PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1325 authentication with radiusclient 0.4.9:
1326
1327 - Error returned from rc_read_config was caught wrongly
1328 - Username/password not passed on to radius server due to wrong length.
1329
1330 The presumption is that some radiusclient API changes for 4.51/PH/17
1331 were not taken care of correctly. The code is still untested by me (my
1332 Linux distribution still has 0.3.2 of radiusclient), but it was
1333 contributed by a Radius user.
1334
1335PH/24 When doing a callout, the value of $domain wasn't set correctly when
1336 expanding the "port" option of the smtp transport.
1337
4304270b
TK
1338TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1339 while reading a MIME header. Thanks to Tom Hughes for a patch.
1340
750af86e
PH
1341PH/24 Include config.h inside local_scan.h so that configuration settings are
1342 available.
1343
64ffc24f
PH
1344PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1345 that in an ACL for RCPT (for example), you can examine exactly what was
1346 received.
1347
5dd9625b
PH
1348PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1349 commands, but it was not correctly comparing the address with the actual
1350 client host address. Thus, it would show the EHLO address in Received:
1351 header lines when this was not necessary.
1352
5591031b
PH
1353PH/27 Added the % operator to ${eval:}.
1354
ba18e66a
PH
1355PH/28 Exim tries to create and chdir to its spool directory when it starts;
1356 it should be ignoring failures (because with -C, for example, it has lost
1357 privilege). It wasn't ignoring creation failures other than "already
1358 exists".
1359
9cec981f
PH
1360PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1361 -bV or -d is used.
1362
aa2b5c79
PH
1363PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1364 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1365 too many continuations, the temporary file was not being removed, and the
1366 return code was incorrect.
aa2b5c79 1367
48a53b7f
PH
1368PH/31 Missing "BOOL" in function definition in filtertest.c.
1369
1c59d63b
PH
1370PH/32 Applied Sieve patches from the maintainer.
1371
671012da
TK
1372TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1373
1509d3a8
PH
1374PH/33 Added "verify = not_blind".
1375
1376PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1377 Local/Makefile (with some defaults set). These are used in built scripts
1378 such as exicyclog, but they have never been used in the exim_install
1379 script (though there are many overriding facilities there). I have
1380 arranged that the exim_install script now takes note of these two
1381 settings.
1382
1383PH/35 Installed configuration files for Dragonfly.
1384
2fe1a124
PH
1385PH/36 When a locally submitted message by a trusted user did not contain a
1386 From: header, and the sender address was obtained from -f or from an SMTP
1387 MAIL command, and the trusted user did not use -F to supply a sender
1388 name, $originator_name was incorrectly used when constructing a From:
1389 header. Furthermore, $originator_name was used for submission mode
1390 messages from external hosts without From: headers in a similar way,
1391 which is clearly wrong.
1392
8800895a
PH
1393PH/37 Added control=suppress_local_fixups.
1394
ccfdb010
PH
1395PH/38 When log_selector = +received_sender was set, and the addition of the
1396 sender made the log line's construction buffer exactly full, or one byte
1397 less than full, an overflow happened when the terminating "\n" was
1398 subsequently added.
1399
1130bfb0
PH
1400PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1401 when the result of a list match is failure because a DNS lookup failed.
1402
ebcb507f
PH
1403PH/40 RM_COMMAND is now used in the building process.
1404
c35e155c
PH
1405PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1406 the "build-* directories that it finds.
1407
95d1f782
PH
1408PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1409 address in a domain literal was a prefix of an interface address.
1410
fd6de02e
PH
1411PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1412 when verifying a sender address, unless rewrite_headers is false.
1413
58de37c5
PH
1414PH/44 Wrote a long comment about why errors_to addresses are verified as
1415 recipients, not senders.
1416
261cf466
TF
1417TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1418 the ratelimit ACL was added.
1419
3ee512ff
PH
1420PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1421
e08c430f
PH
1422PH/46 Added extra information about PostgreSQL errors to the error string.
1423
bef5a11f
PH
1424PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1425 avoiding the need to install special zones in a real server. This is
1426 backwards compatible; if it can't find the fake resolver, it drops back.
1427 Thus, both old and new test suites can be run.
1428
7546de58
TF
1429TF/02 Added util/ratelimit.pl
1430
e5d5a95f
TF
1431TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1432 clock is set back in time.
1433
2e88a017
TF
1434TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1435 Candler <B.Candler@pobox.com>.
1436
a5f65aa4
TF
1437TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1438 OK for addresses that are the result of redirections.
1439
e7726cbf
PH
1440PH/48 A number of further additions for the benefit of the new test suite,
1441 including a fake gethostbyname() that interfaces to the fake DNS resolver
1442 (see PH/47 above).
1443
a7fdad5b
TF
1444TF/06 The fix for widen_domains has also been applied to qualify_single and
1445 search_parents which are the other dnslookup options that can cause
1446 header rewrites.
1447
6af56900
PH
1448PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1449 type ("H").
1450
0925ede6
PH
1451PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1452
66afa403
TF
1453TF/07 Exim produced the error message "an SRV record indicated no SMTP
1454 service" if it encountered an MX record with an empty target hostname.
1455 The message is now "an MX or SRV record indicated no SMTP service".
1456
0154e85a
TF
1457TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1458 if the DNS of the sending site is misconfigured. This is quite a
1459 common situation. This change restores the behaviour of treating a
1460 helo verification defer as a failure.
1461
16f12c76
PH
1462PH/51 If self=fail was set on a router, the bounce message did not include the
1463 actual error message.
1464
bbe902f0 1465
e5a9dba6
PH
1466Exim version 4.52
1467-----------------
1468
1469TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1470
22c3b60b
PH
1471PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1472 command itself ended in error, the underlying message about the transport
1473 filter timeout was being overwritten with the pipe command error. Now the
1474 underlying error message should be appended to the second error message.
1475
06a9b4b5
PH
1476TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1477
c1ac6996
PH
1478PH/02 Reduce the amount of output that "make" produces by default. Full output
1479 can still be requested.
1480
9c7a242c
PH
1481PH/03 The warning log line about a condition test deferring for a "warn" verb
1482 was being output only once per connection, rather than after each
1483 occurrence (because it was using the same function as for successful
1484 "warn" verbs). This seems wrong, so I have changed it.
1485
87ba3f5f
PH
1486TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1487 it should not have, which might have caused a crash in the right
1488 circumstances, but probably never did.
1489
1490PH/04 Installed a modified version of Tony Finch's patch to make submission
1491 mode fix the return path as well as the Sender: header line, and to
1492 add a /name= option so that you can make the user's friendly name appear
1493 in the header line.
1494
29aba418
TF
1495TF/03 Added the control = fakedefer ACL modifier.
1496
fe0dab11
TF
1497TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1498 Mark Lowes for thorough testing.
870f6ba8 1499
11d337a4
TK
1500TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1501
1502TK/03 Merged latest SRS patch from Miles Wilton.
1503
415c8f3b
PH
1504PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1505 with the definition in sysexits.h (which is #included earlier).
1506 Fortunately, Exim does not actually use EX_OK. The code used to try to
1507 preserve the sysexits.h value, by assumimg that macro definitions were
1508 scanned for macro replacements. I have been disabused of this notion,
1509 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1510
958541e9
PH
1511PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1512 in the smtp transport. When a block could not be written in a single
1513 write() function, the timeout was being re-applied to each part-write.
1514 This seems wrong - if the receiver was accepting one byte at a time it
1515 would take for ever. The timeout is now adjusted when this happens. It
1516 doesn't have to be particularly precise.
1517
c206415f
TK
1518TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1519 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1520
2a4be8f9
PH
1521PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1522 without a domain if the check to <postmaster@domain> fails.
1523
1cba11c5
SC
1524SC/01 Eximstats: added -xls and the ability to specify output files
1525 (patch written by Frank Heydlauf).
1526
1527SC/02 Eximstats: use FileHandles for outputing results.
1528
1529SC/03 Eximstats: allow any combination of xls, txt, and html output.
1530
1531SC/04 Eximstats: fixed display of large numbers with -nvr option
1532
1533SC/05 Eximstats: fixed merging of reports with empty tables.
1534
1535SC/06 Eximstats: added the -include_original_destination flag
1536
1537SC/07 Eximstats: removed tabs and trailing whitespace.
1538
1005d00e
TK
1539TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1540
1541TK/06 MBOX spool code: Add real "From " MBOX separator line
1542 so the .eml file is really in mbox format (even though
1543 most programs do not really care). Patch from Alex Miller.
1544
1545TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1546 The latter is generated from $received_to and is only set if the
1547 message has one envelope recipient. SA can use these headers,
1548 obviously out-of-the-box. Patch from Alex Miller.
1549
9b4768fa
PH
1550PH/08 The ${def test on a variable was returning false if the variable's
1551 value was "0", contrary to what the specification has always said!
1552 The result should be true unless the variable is empty.
1553
1554PH/09 The syntax error of a character other than { following "${if
1555 def:variable_name" (after optional whitespace) was not being diagnosed.
1556 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1557 accidental colon was present, for example, could give incorrect results.
1558
0d7eb84a
PH
1559PH/10 Tidied the code in a number of places where the st_size field of a stat()
1560 result is used (not including appendfile, where other changes are about
1561 to be made).
1562
1563PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1564 This involved changing a lot of size variables from int to off_t. It
1565 should work with maildirs and everything.
1566
40727bee
TK
1567TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1568 spamd dying while we are connected to it.
1569
554d2369
TF
1570TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1571 <jgh@wizmail.org>
1572
1f922db1
PH
1573PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1574 function for BDB 4.3.
1575
ef213c3b
PH
1576PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1577
8ac170f3
PH
1578PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1579 the sources for PCRE have been re-arranged and more files are now
1580 involved.
1581
b1c749bb
PH
1582PH/15 The code I had for printing potentially long long variables in PH/11
1583 above was not the best (it lost precision). The length of off_t variables
1584 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1585 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1586 to be "long long int" or "long int". This is needed for the internal
1587 formatting function string_vformat().
b1c749bb 1588
4aac9b49
PH
1589PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1590 the configuration file to be ":syslog", then the script "guesses" where
1591 the logs files are, rather than using the compiled in default. In our
1592 case the guess is not the same as the compiled default, so the script
1593 suddenly stopped working when I started to use syslog. The patch checks
1594 to see if log_file_path is "". If so, it attempts to read it from exim
1595 with no configuration file to get the compiled in version, before it
1596 falls back to the previous guessing code."
1597
294520c8
TK
1598TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1599 implementing BATV in an Exim configuration. See NewStuff for the gory
1600 details.
1601
5bd022fe
PH
1602PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1603 Makefile that are specific to HP-UX.
1604
90e9ce59
PH
1605PH/18 If the "use_postmaster" option was set for a recipient callout together
1606 with the "random" option, the postmaster address was used as the MAIL
1607 FROM address for the random test, but not for the subsequent recipient
1608 test. It is now used for both.
1609
5ea81592
PH
1610PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1611 patch removes a few documentation additions to RFC 3028, because the
1612 latest draft now contains them. It adds the new en;ascii-case comparator
1613 and a new error check for 8bit text in MIME parts. Comparator and
1614 require names are now matched exactly. I enabled the subaddress
1615 extension, but it is not well tested yet (read: it works for me)."
1616
c6c2dc1d
PH
1617PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1618 rework some of the code of TK/09 above to avoid the hardwired use of
1619 "%lld" and "long long". Replaced the call to snprintf() with a call to
1620 string_vformat().
1621
fffffe4c
PH
1622PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1623 records point to non-existent hosts", "retry timeout exceeded", and
1624 "retry time not reached for any host after a long failure period".
ca02eafb 1625
9a26b6b2
PH
1626PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1627 experimental DomainKeys support:
1628
1629 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1630 (2) On an error such as an illegally used "control", the wrong name for
1631 the control was given.
1632
1633 These problems did NOT occur unless DomainKeys support was compiled.
1634
4aee0225
PH
1635PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1636
32d668a5
PH
1637PH/24 Added ${if match_ip condition.
1638
8187c3f3
PH
1639PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1640 databases so that it will be absolutely obvious if a crash occurs in the
1641 DB library. This is a regular occurrence (often caused by mis-matched
1642 db.h files).
1643
ff790e47 1644PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1645 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1646 picked up on a user's system that detects such things. There doesn't seem
1647 to be a gcc warning option for this - only an attribute that has to be
1648 put on the function's prototype. It seems that in Fedora Core 4 they have
1649 set this on a number of new functions. No doubt there will be more in due
1650 course.
ff790e47 1651
5417f6d1
PH
1652PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1653 specify a transport. However, if an address that was verified by such a
1654 router was the subject of a callout, Exim crashed because it tried to
1655 read the rcpt_include_affixes from the non-existent transport. Now it
1656 just assumes that the setting of that option is false. This bug was
1657 introduced by 4.51/PH/31.
1658
59cf8544
PH
1659PH/28 Changed -d+all to exclude +memory, because that information is very
1660 rarely of interest, but it makes the output a lot bigger. People tend to
1661 do -d+all out of habit.
1662
e7ad8a65
PH
1663PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1664 code in os-type was giving problems when libc.so lives in lib64, like on
1665 x86_64 Fedora Core.
1666
ade42478
PH
1667PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1668 aren't the modern standard, and it seems that some systems' include files
1669 don't always have them. Exim was already checking for some of the newer
1670 ones like T_AAAA, and defining it itself. I've added checks for all the
1671 record types that Exim uses.
1672
182ad5cf
PH
1673PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1674 not automatically generating a new one, as it is supposed to. This
1675 prevented TLS from working. If the file did exist, but contained invalid
1676 data, a new version was generated, as expected. It was only the case of a
1677 non-existent file that was broken.
1678
b0d9fc80
TK
1679TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1680 with a change in libdomainkeys > 0.64.
1681
1682TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1683 from DNS. If the selector record carries the flag, it now has
1684 precedence over the domain-wide flag.
1685
1686TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1687
47c7a64a
PH
1688PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1689 the use of a port name that isn't defined in /etc/services) occurred, the
1690 message was deferred as in a normal delivery, and thus remained on the
1691 spool, instead of being failed because of the mua_wrapper setting. This
1692 is now fixed, and I tidied up some of the mua_wrapper messages at the
1693 same time.
1694
a388bce4
SC
1695SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1696 the messages in a hash of arrays rather than using individual hashes.
1697 This is a bit cleaner and results in dramatic memory savings, albeit
1698 at a slight CPU cost.
1699
1700SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1701 as requested by Marc Sherman.
1702
1703SC/10 Eximstats: added histograms for user specified patterns as requested
1704 by Marc Sherman.
1705
0793e4ed
SC
1706SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1707
c58b88df
PH
1708PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1709 fopen() in the content-scanning modules that did not already have it.
1710
e7ad8a65 1711
7982096b
PH
1712Exim version 4.51
1713-----------------
1714
1a46a8c5
PH
1715TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1716 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1717
2f079f46 1718TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1719
1720TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1721
1722PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1723 to test Sieve filters that use "vacation".
1724
1725PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1726 that changes the way the GnuTLS parameters are stored in the cache file.
1727 The new format can be generated externally. For backward compatibility,
1728 if the data in the cache doesn't make sense, Exim assumes it has read an
1729 old-format file, and it generates new data and writes a new file. This
1730 means that you can't go back to an older release without removing the
1731 file.
1732
1733PH/03 A redirect router that has both "unseen" and "one_time" set does not
1734 work if there are any delivery delays because "one_time" forces the
1735 parent to be marked "delivered", so its unseen clone is never tried
1736 again. For this reason, Exim now forbids the simultaneous setting of
1737 these two options.
1738
1739PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1740 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1741 entry if you want to know the details. The fix, however, neglected to
1742 consider the case when local delivery batching is involved. The test for
1743 "previously delivered" was not happening when checking to see if an
1744 address could be batched with a previous (undelivered) one; under
1745 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1746 address.
1a46a8c5
PH
1747
1748PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1749 in its include files, and this causes problems building Exim.
1750
1751PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1752 header_syntax) but Exim was just ignoring anything given after a slash.
1753 In particular, this caused confusion with an attempt to use "verify =
1754 reverse_host_lookup/defer_ok". An error is now given when options are
1755 supplied for verify items that do not have them. (Maybe reverse_host_
1756 lookup should have a defer_ok option, but that's a different point.)
1757
1758PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1759 defined by RFC 821) to 2048, because there were problems with some AUTH
1760 commands, and RFC 1869 says the size should be increased for extended
1761 SMTP commands that take arguments.
1762
1763PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1764 Finch).
1765
1766PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1767 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1768
49c2d5ea
PH
1769PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1770 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1771 whatever). Otherwise the password may appear in the log. Following change
1772 PH/42 below, there is no longer a chance of it appearing in a bounce
1773 message.
49c2d5ea 1774
bf759a8b
PH
1775PH/11 Installed exipick version 20050225.0 from John Jetmore.
1776
83364d30
PH
1777PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1778 of its addresses was ever tried. (Bugzilla bug #2.)
1779
7999bbd7
PH
1780PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1781 the result incorrectly in the debug output. (It correctly added a newline
1782 to what was transported.)
1783
7dbf77c9
PH
1784TF/01 Added $received_time.
1785
74e0617f
PH
1786PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1787 commented out examples of how to interface to a virus scanner and to
1788 SpamAssassin. Also added commented examples of av_scanner and
1789 spamd_address settings.
1790
2f079f46
PH
1791PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1792 and controls are allowed in which ACLs. There were a couple of minor
1793 errors. Some of the entries in the conditions table (which is a table of
1794 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1795 negation of where the condition IS allowed.
1796
8c841523
PH
1797PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1798
7766a4f0
PH
1799PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1800 header file does not have a version number, so I've had to invent a new
1801 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1802 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1803 radiusclient), but it was contributed by a Radius user.
1804
8b417f2c
PH
1805PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1806 files or directories, for OpenSSL.
1807
901f42cb
PH
1808PH/19 When an Exim process that is running as root has to create an Exim log
1809 file, it does so in a subprocess that runs as exim:exim so as to get the
1810 ownership right at creation (otherwise, other Exim processes might see
1811 the file with the wrong ownership). There was no test for failure of this
1812 fork() call, which would lead to the process getting stuck as it waited
1813 for a non-existent subprocess. Forks do occasionally fail when resources
1814 run out. I reviewed all the other calls to fork(); they all seem to check
1815 for failure.
1816
f9b9210e
PH
1817PH/20 When checking for unexpected SMTP input at connect time (before writing
1818 the banner), Exim was not dealing correctly with a non-positive return
1819 from the read() function. If the client had disconnected by this time,
1820 the result was a log entry for a synchronization error with an empty
1821 string after "input=" when read() returned zero. If read() returned -1
1822 (an event I could not check), uninitialized data bytes were printed.
1823 There were reports of junk text (parts of files, etc) appearing after
1824 "input=".
1825
54cdb463
PH
1826PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1827
cf00dad6
PH
1828PH/22 Added support for macro redefinition, and (re)definition in between
1829 driver and ACL definitions.
1830
acb1b346
PH
1831PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1832 forgetting to use the resulting value; it was using the unexpanded value.
1833
c5ddb310
PH
1834PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1835 hadn't been configured. The fix is from Juergen Kreileder, who
1836 understands it better than I do:
1837
1838 "Here's what I see happening with three configured cyrus_sasl
1839 authenticators configured (plain, login, cram-md5):
1840
1841 On startup auth_cyrus_sasl_init() gets called for each of these.
1842 This means three calls to sasl_listmech() without a specified mech_list.
1843 => SASL tests which mechs of all available mechs actually work
1844 => three warnings about OTP not working
1845 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1846
1847 With the patch, sasl_listmech() also gets called three times. But now
1848 SASL's mech_list option is set to the server_mech specified in the the
1849 authenticator. Or in other words, the answer from sasl_listmech()
1850 gets limited to just the mech you're testing for (which is different
1851 for each call.)
1852 => the return list contains just 'plain' or 'login', 'cram-md5' or
1853 nothing depending on the value of ob->server_mech.
1854
1855 I've just tested the patch: Authentication still works fine,
1856 unavailable mechs specified in the exim configuration are still
1857 caught, and the auth.log warnings about OTP are gone."
1858
31619da6
PH
1859PH/25 When debugging is enabled, the contents of the command line are added
1860 to the debugging output, even when log_selector=+arguments is not
1861 specified.
1862
bebaf0fc
PH
1863PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1864 answer is "GNU", and only if the return is "GNU/something" is the answer
1865 "Linux".
1866
475fe28a
PH
1867PH/27 $acl_verify_message is now set immediately after the failure of a
1868 verification in an ACL, and so is available in subsequent modifiers. In
1869 particular, the message can be preserved by coding like this:
1870
1871 warn !verify = sender
1872 set acl_m0 = $acl_verify_message
1873
1874 Previously, $acl_verify_message was set only while expanding "message"
1875 and "log_message" when a very denied access.
1876
7e8bec7a
PH
1877PH/28 Modified OS/os.c-Linux with
1878
1879 -#ifndef OS_LOAD_AVERAGE
1880 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1881
1882 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1883 nomenclature these days.)
1884
e4a89c47
PH
1885PH/29 Installed patch from the Sieve maintainer that adds the options
1886 sieve_useraddress and sieve_subaddress to the redirect router.
1887
5ca2a9a1
PH
1888PH/30 In these circumstances:
1889 . Two addresses routed to the same list of hosts;
1890 . First host does not offer TLS;
1891 . First host accepts first address;
1892 . First host gives temporary error to second address;
1893 . Second host offers TLS and a TLS session is established;
1894 . Second host accepts second address.
1895 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1896 and peerdn, if requested) that were in fact used only for the second
1897 address.
7e8bec7a 1898
c688b954
PH
1899PH/31 When doing a callout as part of verifying an address, Exim was not paying
1900 attention to any local part prefix or suffix that was matched by the
1901 router that accepted the address. It now behaves in the same way as it
1902 does for delivery: the affixes are removed from the local part unless
1903 rcpt_include_affixes is set on the transport.
1904
fed77020
PH
1905PH/32 Add the sender address, as F=<...>, to the log line when logging a
1906 timeout during the DATA phase of an incoming message.
1907
7fe1560f
PH
1908PH/33 Sieve envelope tests were broken for match types other than :is. I have
1909 applied a patch sanctioned by the Sieve maintainer.
c688b954 1910
ebb6e6d5
PH
1911PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1912 the uid or gid is negative. A case of a negative gid caused this to be
1913 noticed. The fix allows for either to be negative.
1914
9c4e8f60
PH
1915PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1916 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1917 overlooked.
1918
1919PH/36 The change PH/12 above was broken. Fixed it.
1920
d7174846
PH
1921PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1922 the grounds that routing the same address twice would always produce the
1923 same answer. This might have been true once, but it is certainly no
1924 longer true now. Routing a child address may depend on the previous
1925 routing that produced that child. Some complicated redirection strategies
1926 went wrong when messages had multiple recipients, and made Exim's
1927 behaviour dependent on the order in which the addresses were given.
1928
1929 I have moved the duplicate checking until after the routing is complete.
1930 Exim scans the addresses that are assigned to local and remote
1931 transports, and removes any duplicates. This means that more work will be
1932 done, as duplicates will always all be routed, but duplicates are
1933 presumably rare, so I don't expect this is of any significance.
1934
1935 For deliveries to pipes, files, and autoreplies, the duplicate checking
1936 still happens during the routing process, since they are not going to be
1937 routed further.
1938
cfe75fc3
PH
1939PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1940 It corrects a timeout issue with spamd. This is Ian's comment: "The
1941 background is that sometimes spamd either never reads data from a
1942 connection it has accepted, or it never writes response data. The exiscan
1943 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1944 blindly assumes that writes won't block so it may never time out."
1945
be22d70e
PH
1946PH/39 Allow G after quota size as well as K and M.
1947
0612b098
PH
1948PH/40 The value set for $authenticated_id in an authenticator may not contain
1949 binary zeroes or newlines because the value is written to log lines and
1950 to spool files. There was no check on this. Now the value is run through
1951 the string_printing() function so that such characters are converted to
1952 printable escape sequences.
1953
2e0c1448
PH
1954PH/41 $message_linecount is a new variable that contains the total number of
1955 lines in the message. Compare $body_linecount, which is the count for the
1956 body only.
1957
447d236c
PH
1958PH/42 Exim no longer gives details of delivery errors for specific addresses in
1959 bounce and delay warning messages, except in certain special cases, which
1960 are as follows:
1961
1962 (a) An SMTP error message from a remote host;
1963 (b) A message specified in a :fail: redirection;
1964 (c) A message specified in a "fail" command in a system filter;
1965 (d) A message specified in a FAIL return from the queryprogram router;
1966 (e) A message specified by the cannot_route_message router option.
1967
1968 In these cases only, Exim does include the error details in bounce and
1969 warning messages. There are also a few cases where bland messages such
1970 as "unrouteable address" or "local delivery error" are given.
1971
d20976dc
PH
1972PH/43 $value is now also set for the "else" part of a ${run expansion.
1973
f656d135
PH
1974PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1975 being worked on, but at least Exim now implements the latest version to
1976 play with."
1977
2e2a30b4
PH
1978PH/45 In a pipe transport, although a timeout while waiting for the pipe
1979 process to complete was treated as a delivery failure, a timeout while
1980 writing the message to the pipe was logged, but erroneously treated as a
1981 successful delivery. Such timeouts include transport filter timeouts. For
1982 consistency with the overall process timeout, these timeouts are now
1983 treated as errors, giving rise to delivery failures by default. However,
1984 there is now a new Boolean option for the pipe transport called
1985 timeout_defer, which, if set TRUE, converts the failures into defers for
1986 both kinds of timeout. A transport filter timeout is now identified in
1987 the log output.
1988
9176e9f0
PH
1989PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1990 systems where "make" and "gmake" are different, calling "gmake" at top
1991 level broke things. I've arranged for the value of $(MAKE) to be passed
1992 from the Makefile to this script so that it can call the same version of
1993 "make".
1994
7982096b 1995
bbe902f0
PH
1996A note about Exim versions 4.44 and 4.50
1997----------------------------------------
1998
1999Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2000changes of various kinds. As a consequence, a big documentation update was
2001needed. This delayed the release for rather longer than seemed good, especially
2002in the light of a couple of (minor) security issues. Therefore, the changes
2003that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2004release. So 4.44 and 4.50 are in effect two different branches that both start
2005from 4.43.
2006
2007I have left the 4.50 change log unchanged; it contains all the changes since
20084.43. The change log for 4.44 is below; many of its items are identical to
2009those for 4.50. This seems to be the most sensible way to preserve the
2010historical information.
2011
2012
f7b63901 2013Exim version 4.50
495ae4b0
PH
2014-----------------
2015
5fe762f6
PH
2016 1. Minor wording change to the doc/README.SIEVE file.
2017
139059f6 2018 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2019 computation of the current number of files was incorrect.
495ae4b0 2020
7086e875
PH
2021 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2022 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2023 place.
2024
35af9f61
PH
2025 4. Give more explanation in the error message when the command for a transport
2026 filter fails to execute.
2027
b668c215
PH
2028 5. There are several places where Exim runs a non-Exim command in a
2029 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2030 was being done only for the command run by the queryprogram router. It is
2031 now done for all such subprocesses. The other cases are: ${run, transport
2032 filters, and the commands run by the lmtp and pipe transports.
2033
a494b1e1
PH
2034 6. Added CONFIGURE_GROUP build-time option.
2035
2036 7. Some older OS have a limit of 256 on the maximum number of file
2037 descriptors. Exim was using setrlimit() to set 1000 as a large value
2038 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2039 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2040
c5fcb476
PH
2041 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2042 was an oversight, and furthermore, ever since the addition of extra
2043 controls (e.g. 4.43/32), the checks on when to allow different forms of
2044 "control" were broken. There should now be diagnostics for all cases when a
2045 control that does not make sense is encountered.
2046
69358f02
PH
2047 9. Added the /retain_sender option to "control=submission".
2048
5be20824
PH
204910. $recipients is now available in the predata ACL (oversight).
2050
eb2c0248
PH
205111. Tidy the search cache before the fork to do a delivery from a message
2052 received from the command line. Otherwise the child will trigger a lookup
2053 failure and thereby defer the delivery if it tries to use (for example) a
2054 cached ldap connection that the parent has called unbind on.
2055
2a3eea10
PH
205612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2057 of $address_data from the recipient verification was clobbered by the
2058 sender verification.
2059
206013. The value of address_data from a sender verification is now available in
2061 $sender_address_data in subsequent conditions in the ACL statement.
2062
23c7ff99
PH
206314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2064
4deaf07d
PH
206515. Added a new option "connect=<time>" to callout options, to set a different
2066 connection timeout.
2067
926e1192
PH
206816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2069 was its contents. (It was OK if the option was not defined at all.)
2070
650edc6f
PH
207117. A "Completed" log line is now written for messages that are removed from
2072 the spool by the -Mrm option.
2073
2c7db3f5
PH
207418. New variables $sender_verify_failure and $recipient_verify_failure contain
2075 information about exactly what failed.
2076
3d235903
PH
207719. Added -dd to debug only the daemon process.
2078
7c7ad977
PH
207920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2080 handles timeouts, both on the server side and network timeouts. Renamed the
2081 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2082
981756db
PH
208321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2084 It is now set to "smtps".
2085
d4eb88df
PH
208622. $host_address is now set to the target address during the checking of
2087 ignore_target_hosts.
2088
208923. When checking ignore_target_hosts for an ipliteral router, no host name was
2090 being passed; this would have caused $sender_host_name to have been used if
2091 matching the list had actually called for a host name (not very likely,
2092 since this list is usually IP addresses). A host name is now passed as
2093 "[x.x.x.x]".
2094
7d468ab8
PH
209524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2096 code that specifies a non-restarting handler (typically sigaction() in
2097 modern systems) in an attempt to fix a rare and obscure crash bug.
2098
209925. Narrowed the window for a race in the daemon that could cause it to ignore
2100 SIGCHLD signals. This is not a major problem, because they are used only to
2101 wake it up if nothing else does.
2102
62c0818f
PH
210326. A malformed maildirsize file could cause Exim to calculate negative values
2104 for the mailbox size or file count. Odd effects could occur as a result.
2105 The maildirsize information is now recalculated if the size or filecount
2106 end up negative.
2107
26034054
PH
210827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2109 support for a long time. Removed HAVE_SYS_VFS_H.
2110
af66f652
PH
211128. Installed the latest version of exipick from John Jetmore.
2112
90af77f4
PH
211329. In an address list, if the pattern was not a regular expression, an empty
2114 subject address (from a bounce message) matched only if the pattern was an
2115 empty string. Non-empty patterns were not even tested. This was the wrong
2116 because it is perfectly reasonable to use an empty address as part of a
2117 database query. An empty address is now tested by patterns that are
2118 lookups. However, all the other forms of pattern expect the subject to
2119 contain a local part and a domain, and therefore, for them, an empty
2120 address still always fails if the pattern is not itself empty.
2121
d8ef3577
PH
212230. Exim went into a mad DNS loop when attempting to do a callout where the
2123 host was specified on an smtp transport, and looking it up yielded more
2124 than one IP address.
2125
5cb8cbc6
PH
212631. Re-factored the code for checking spool and log partition space into a
2127 function that finds that data and another that does the check. The former
2128 is then used to implement four new variables: $spool_space, $log_space,
2129 $spool_inodes, and $log_inodes.
2130
14702f5b
PH
213132. The RFC2047 encoding function was originally intended for short strings
2132 such as real names; it was not keeping to the 75-character limit for
2133 encoded words that the RFC imposes. It now respects the limit, and
2134 generates multiple encoded words if necessary. To be on the safe side, I
2135 have increased the buffer size for the ${rfc2047: expansion operator from
2136 1024 to 2048 bytes.
2137
063b1e99
PH
213833. It is now permitted to omit both strings after an "if" condition; if the
2139 condition is true, the result is "true". As before, when the second string
2140 is omitted, a false condition yields an empty string. This makes it less
2141 cumbersome to write custom ACL and router conditions.
2142
652e1b65
PH
214334. Failure to deliver a bounce message always caused it to be frozen, even if
2144 there was an errors_to setting on the router. The errors_to setting is now
2145 respected.
2146
6f0c9a4f
PH
214735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2148 canonical form (fully expanded) before being placed in
2149 $sender_host_address.
2150
33397d19
PH
215136. The table in the code that translates DNS record types into text (T_A to
2152 "A" for instance) was missing entries for NS and CNAME. It is just possible
2153 that this could have caused confusion if both these types were looked up
2154 for the same domain, because the text type is used as part of Exim's
2155 per-process caching. But the chance of anyone hitting this buglet seems
2156 very small.
2157
7bb56e1f
PH
215837. The dnsdb lookup has been extended in a number of ways.
2159
2160 (1) There is a new type, "zns", which walks up the domain tree until it
2161 finds some nameserver records. It should be used with care.
2162
ea3bc19b
PH
2163 (2) There is a new type, "mxh", which is like "mx" except that it returns
2164 just the host names, not the priorities.
2165
2166 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2167 looked up. The behaviour when one of the lookups defers can be
2168 controlled by a keyword.
7bb56e1f 2169
ea3bc19b 2170 (4) It is now possible to specify the separator character for use when
7bb56e1f 2171 multiple records are returned.
33397d19 2172
0bcb2a0e
PH
217338. The dnslists ACL condition has been extended: it is now possible to supply
2174 a list of IP addresses and/or domains to be looked up in a particular DNS
2175 domain.
2176
2ac0e484
PH
217739. Added log_selector=+queue_time_overall.
2178
4e1fde53
PH
217940. When running the queue in the test harness, wait just a tad after forking a
2180 delivery process, to get repeatability of debugging output.
2181
de365ded
PH
218241. Include certificate and key file names in error message when GnuTLS fails
2183 to set them up, because the GnuTLS error message doesn't include the name
2184 of the failing file when there is a problem reading it.
2185
f05da2e8
PH
218642. Allow both -bf and -bF in the same test run.
2187
d6453af2
PH
218843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2189
f7b63901
PH
219044. The "Exiscan patch" is now merged into the mainline Exim source.
2191
219245. Sometimes the final signoff response after QUIT could fail to get
2193 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2194 < 0 before doing a fflush(). This bug looks as though it goes back to the
2195 introduction of TLS in release 3.20, but "sometimes" must have been rare
2196 because the tests only now provoked it.
2197
a444213a
PH
219846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2199 (this can affect the format of dates).
2200
0ec020ea
PH
220147. exim_tidydb, when checking for the continued existence of a message for
2202 which it has found a message-specific retry record, was not finding
2203 messages that were in split spool directories. Consequently, it was
2204 deleting retry records that should have stayed in existence.
2205
b1206957
PH
220648. Steve fixed some bugs in eximstats.
2207
220849. The SPA authentication driver was not abandoning authentication and moving
2209 on to the next authenticator when an expansion was forced to fail,
2210 contradicting the general specification for all authenticators. Instead it
2211 was generating a temporary error. It now behaves as specified.
2212
26dd5a95
PH
221350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2214 (the order specifies the preference for clients). The order is now AES256,
2215 AES128, 3DES, ARCFOUR128.
2216
343b2385
PH
221751. Small patch to Sieve code - explicitly set From: when generating an
2218 autoreply.
2219
1c5466b9
PH
222052. Exim crashed if a remote delivery caused a very long error message to be
2221 recorded - for instance if somebody sent an entire SpamAssassin report back
2222 as a large number of 550 error lines. This bug was coincidentally fixed by
2223 increasing the size of one of Exim's internal buffers (big_buffer) that
2224 happened as part of the Exiscan merge. However, to be on the safe side, I
2225 have made the code more robust (and fixed the comments that describe what
2226 is going on).
2227
55ee9ee3
PH
222853. Now that there can be additional text after "Completed" in log lines (if
2229 the queue_time_overall log selector is set), a one-byte patch to exigrep
2230 was needed to allow it to recognize "Completed" as not the last thing in
2231 the line.
2232
d38f8232
PH
223354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2234 patch that reportedly fixes this has been added. I am not expert enough to
2235 create a test for it. This is what the patch creator wrote:
2236
2237 "I found a little strange behaviour of ldap code when working with
2238 Windows 2003 AD Domain, where users was placed in more than one
2239 Organization Units. When I tried to give exim partial DN, the exit code
2240 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2241 But simultaneously result of request was absolutely normal ldap result,
2242 so I produce this patch..."
2243
3295e65b
PH
2244 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2245 REFERENCE, so I have modified the code to exclude the patch when that macro
2246 is not defined.
2247
7102e136
PH
224855. Some experimental protocols are using DNS PTR records for new purposes. The
2249 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2250 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2251 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2252 CAN-2005-0021
7102e136 2253
3ca0ba97
PH
225456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2255
c2bcbe20
PH
225657. Double the size of the debug message buffer (to 2048) so that more of very
2257 long debug lines gets shown.
2258
18ce445d
PH
225958. The exicyclog utility now does better if the number of log files to keep
2260 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2261
1f5b4c3d
PH
226259. Two changes related to the smtp_active_hostname option:
2263
2264 (1) $smtp_active_hostname is now available as a variable.
2265 (2) The default for smtp_banner uses $smtp_active_hostname instead
2266 of $primary_hostname.
2267
b975ba52
PH
226860. The host_aton() function is supposed to be passed a string that is known
2269 to be a valid IP address. However, in the case of IPv6 addresses, it was
2270 not checking this. This is a hostage to fortune. Exim now panics and dies
2271 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2272 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2273 components; fortuitously, this particular loophole had already been fixed
2274 by change 4.50/55 above.
2275
2276 If there are any other similar loopholes, the new check in host_aton()
2277 itself should stop them being exploited. The report I received stated that
2278 data on the command line could provoke the exploit when Exim was running as
2279 exim, but did not say which command line option was involved. All I could
2280 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2281 running as the user.
ea3a6f44 2282 CAN-2005-0021
85b87bc2
PH
2283
228461. There was a buffer overflow vulnerability in the SPA authentication code
2285 (which came originally from the Samba project). I have added a test to the
2286 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2287 CAN-2005-0022
b975ba52 2288
17ffcae7
PH
228962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2290 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2291
d95f9fdb
PH
229263. The daemon start-up calls getloadavg() while still root for those OS that
2293 need the first call to be done as root, but it missed one case: when
2294 deliver_queue_load_max is set with deliver_drop_privilege. This is
2295 necessary for the benefit of the queue runner, because there is no re-exec
2296 when deliver_drop_privilege is set.
2297
86b8287f
PH
229864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2299 This has been fixed.
2300
60dc5e56
PH
230165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2302 was in use, was not putting the data itself into the right store pool;
2303 consequently, it could be overwritten for a subsequent message in the same
2304 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2305 the caching.)
2306
533244af
PH
230766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2308
a5a28604
PH
230967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2310 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2311 the function were treating the return as a boolean value, which happened to
2312 work because 0=false and not-0=true, but is not correct code.
2313
7e634d24
PH
231468. The host_aton() function was not handling scoped IPv6 addresses (those
2315 with, for example, "%eth0" on the end) correctly.
2316
3e11c26b
PH
231769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2318 negated items (that is, ~something) in unsigned ints. Some compilers
2319 apparently mutter when there is no cast.
2320
6729cf78
PH
232170. If an address verification called from an ACL failed, and did not produce a
2322 user-specific message (i.e. there was only a "system" message), nothing was
2323 put in $acl_verify_message. In this situation, it now puts the system
2324 message there.
2325
00f00ca5
PH
232671. Change 4.23/11 added synchronization checking at the start of an SMTP
2327 session; change 4.31/43 added the unwanted input to the log line - except
2328 that it did not do this in the start of session case. It now does.
2329
c9bdd01c
PH
233072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2331 This is wrong and can cause the other end to generate a synchronization
2332 error if it is another Exim or anything else that does the synchronization
2333 check. A QUIT command is no longer sent after a timeout.
2334
d43194df
PH
233573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2336 during host lookups.
2337
fe5b5d0b
PH
233874. The defer_ok option of callout verification was not working if it was used
2339 when verifying addresses in header lines, that is, for this case:
2340
2341 verify = header_sender/callout=defer_ok
2342
76a2d7ba
PH
234375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2344 those file descriptors could be used for SMTP connections. If anything
2345 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2346 could be sent to the SMTP client, causing chaos. The daemon now opens
2347 stdin, stdout, and stderr to /dev/null when it puts itself into the
2348 background.
2349
235076. Arrange for output from Perl's "warn" command to be written to Exim's main
2351 log by default. The user can override this with suitable Perl magic.
2352
04f7d5b9
PH
235377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2354 the log message when discard triggers, was not working for the DATA ACL or
2355 for the non-SMTP ACL.
2356
bc60667e
PH
235778. Error message wording change in sieve.c.
2358
bb6e88ff
PH
235979. If smtp_accept_max_per_host was set, the number of connections could be
2360 restricted to fewer than expected, because the daemon was trying to set up
2361 a new connection before checking whether the processes handling previous
2362 connections had finished. The check for completed processes is now done
2363 earlier. On busy systems, this bug wouldn't be noticed because something
2364 else would have woken the daemon, and it would have reaped the completed
2365 process earlier.
2366
1e70f85b
PH
236780. If a message was submitted locally by a user whose login name contained one
2368 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2369 It caused a spool format error. I have fixed the spool reading code. A
2370 related problem was that the "from" clause in the Received: line became
2371 illegal because of the space(s). It is now covered by ${quote_local_part.
2372
237381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2374 tables).
2375
4e01f9d6
PH
237682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2377
1ee1cef2
PH
237883. Patch from Sieve maintainer to fix unterminated string problem in
2379 "vacation" handling.
2380
6e2b4ccc
PH
238184. Some minor changes to the Linux configuration files to help with other
2382 OS variants using glibc.
2383
8e669ac1
PH
238485. One more patch for Sieve to update vacation handling to latest spec.
2385
495ae4b0 2386
bbe902f0
PH
2387----------------------------------------------------
2388See the note above about the 4.44 and 4.50 releases.
2389----------------------------------------------------
2390
2391
2392Exim version 4.44
2393-----------------
2394
2395 1. Change 4.43/35 introduced a bug that caused file counts to be
2396 incorrectly computed when quota_filecount was set in an appendfile
2397 transport
2398
2399 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2400 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2401 place.
2402
2403 3. Give more explanation in the error message when the command for a transport
2404 filter fails to execute.
2405
2406 4. There are several places where Exim runs a non-Exim command in a
2407 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2408 was being done only for the command run by the queryprogram router. It is
2409 now done for all such subprocesses. The other cases are: ${run, transport
2410 filters, and the commands run by the lmtp and pipe transports.
2411
2412 5. Some older OS have a limit of 256 on the maximum number of file
2413 descriptors. Exim was using setrlimit() to set 1000 as a large value
2414 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2415 systems. I've change it so that if it can't get 1000, it tries for 256.
2416
2417 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2418 was an oversight, and furthermore, ever since the addition of extra
2419 controls (e.g. 4.43/32), the checks on when to allow different forms of
2420 "control" were broken. There should now be diagnostics for all cases when a
2421 control that does not make sense is encountered.
2422
2423 7. $recipients is now available in the predata ACL (oversight).
2424
2425 8. Tidy the search cache before the fork to do a delivery from a message
2426 received from the command line. Otherwise the child will trigger a lookup
2427 failure and thereby defer the delivery if it tries to use (for example) a
2428 cached ldap connection that the parent has called unbind on.
2429
2430 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2431 of $address_data from the recipient verification was clobbered by the
2432 sender verification.
2433
243410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2435 was its contents. (It was OK if the option was not defined at all.)
2436
243711. A "Completed" log line is now written for messages that are removed from
2438 the spool by the -Mrm option.
2439
244012. $host_address is now set to the target address during the checking of
2441 ignore_target_hosts.
2442
244313. When checking ignore_target_hosts for an ipliteral router, no host name was
2444 being passed; this would have caused $sender_host_name to have been used if
2445 matching the list had actually called for a host name (not very likely,
2446 since this list is usually IP addresses). A host name is now passed as
2447 "[x.x.x.x]".
2448
244914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2450 code that specifies a non-restarting handler (typically sigaction() in
2451 modern systems) in an attempt to fix a rare and obscure crash bug.
2452
245315. Narrowed the window for a race in the daemon that could cause it to ignore
2454 SIGCHLD signals. This is not a major problem, because they are used only to
2455 wake it up if nothing else does.
2456
245716. A malformed maildirsize file could cause Exim to calculate negative values
2458 for the mailbox size or file count. Odd effects could occur as a result.
2459 The maildirsize information is now recalculated if the size or filecount
2460 end up negative.
2461
246217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2463 support for a long time. Removed HAVE_SYS_VFS_H.
2464
ea3a6f44 246518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2466
246719. Allow an empty sender to be matched against a lookup in an address list.
2468 Previously the only cases considered were a regular expression, or an
2469 empty pattern.
2470
247120. Exim went into a mad DNS lookup loop when doing a callout where the
2472 host was specified on the transport, if the DNS lookup yielded more than
2473 one IP address.
2474
ea3a6f44
NM
247521. The RFC2047 encoding function was originally intended for short strings
2476 such as real names; it was not keeping to the 75-character limit for
2477 encoded words that the RFC imposes. It now respects the limit, and
2478 generates multiple encoded words if necessary. To be on the safe side, I
2479 have increased the buffer size for the ${rfc2047: expansion operator from
2480 1024 to 2048 bytes.
bbe902f0 2481
ea3a6f44
NM
248222. Failure to deliver a bounce message always caused it to be frozen, even if
2483 there was an errors_to setting on the router. The errors_to setting is now
2484 respected.
bbe902f0
PH
2485
248623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2487 canonical form (fully expanded) before being placed in
2488 $sender_host_address.
2489
249024. Updated eximstats to version 1.33
2491
ea3a6f44
NM
249225. Include certificate and key file names in error message when GnuTLS fails
2493 to set them up, because the GnuTLS error message doesn't include the name
2494 of the failing file when there is a problem reading it.
bbe902f0
PH
2495
249626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2497 As per change 25.
bbe902f0 2498
ea3a6f44
NM
249927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2500 (this can affect the format of dates).
bbe902f0 2501
ea3a6f44
NM
250228. exim_tidydb, when checking for the continued existence of a message for
2503 which it has found a message-specific retry record, was not finding
2504 messages that were in split spool directories. Consequently, it was
2505 deleting retry records that should have stayed in existence.
bbe902f0
PH
2506
250729. eximstats updated to version 1.35
2508 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2509 1.35 - bugfix such that pie charts by volume are generated correctly
2510
ea3a6f44
NM
251130. The SPA authentication driver was not abandoning authentication and moving
2512 on to the next authenticator when an expansion was forced to fail,
2513 contradicting the general specification for all authenticators. Instead it
2514 was generating a temporary error. It now behaves as specified.
bbe902f0 2515
ea3a6f44
NM
251631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2517 (the order specifies the preference for clients). The order is now AES256,
2518 AES128, 3DES, ARCFOUR128.
bbe902f0 2519
ea3a6f44
NM
252031. Small patch to Sieve code - explicitly set From: when generating an
2521 autoreply.
bbe902f0 2522
ea3a6f44
NM
252332. Exim crashed if a remote delivery caused a very long error message to be
2524 recorded - for instance if somebody sent an entire SpamAssassin report back
2525 as a large number of 550 error lines. This bug was coincidentally fixed by
2526 increasing the size of one of Exim's internal buffers (big_buffer) that
2527 happened as part of the Exiscan merge. However, to be on the safe side, I
2528 have made the code more robust (and fixed the comments that describe what
2529 is going on).
bbe902f0 2530
ea3a6f44
NM
253133. Some experimental protocols are using DNS PTR records for new purposes. The
2532 keys for these records are domain names, not reversed IP addresses. The
2533 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2534 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2535 CAN-2005-0021
2536
ea3a6f44
NM
253734. The host_aton() function is supposed to be passed a string that is known
2538 to be a valid IP address. However, in the case of IPv6 addresses, it was
2539 not checking this. This is a hostage to fortune. Exim now panics and dies
2540 if the condition is not met. A case was found where this could be provoked
2541 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2542 components; fortuitously, this particular loophole had already been fixed
2543 by change 4.50/55 or 4.44/33 above.
2544
2545 If there are any other similar loopholes, the new check in host_aton()
2546 itself should stop them being exploited. The report I received stated that
2547 data on the command line could provoke the exploit when Exim was running as
2548 exim, but did not say which command line option was involved. All I could
2549 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2550 running as the user.
bbe902f0
PH
2551 CAN-2005-0021
2552
ea3a6f44
NM
255335. There was a buffer overflow vulnerability in the SPA authentication code
2554 (which came originally from the Samba project). I have added a test to the
2555 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2556 CAN-2005-0022
2557
ea3a6f44
NM
255836. The daemon start-up calls getloadavg() while still root for those OS that
2559 need the first call to be done as root, but it missed one case: when
2560 deliver_queue_load_max is set with deliver_drop_privilege. This is
2561 necessary for the benefit of the queue runner, because there is no re-exec
2562 when deliver_drop_privilege is set.
bbe902f0 2563
ea3a6f44
NM
256437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2565 was in use, was not putting the data itself into the right store pool;
2566 consequently, it could be overwritten for a subsequent message in the same
2567 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2568 the caching.)
bbe902f0 2569
ea3a6f44
NM
257038. Sometimes the final signoff response after QUIT could fail to get
2571 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2572 < 0 before doing a fflush(). This bug looks as though it goes back to the
2573 introduction of TLS in release 3.20, but "sometimes" must have been rare
2574 because the tests only now provoked it.
bbe902f0
PH
2575
2576
495ae4b0
PH
2577Exim version 4.43
2578-----------------
2579
2580 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2581 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2582 Now it returns an integer. A number of calls were still expecting a T/F
2583 return. Fortuitously, in all cases, the tests worked in OK situations,
2584 which is the norm. However, things would have gone wrong on any write
2585 failures on the smtp file descriptor. This function is used when sending
2586 messages over SMTP and also when doing verify callouts.
2587
2588 2. When Exim is called to do synchronous delivery of a locally submitted
2589 message (the -odf or -odi options), it no longer closes stderr before doing
2590 the delivery.
2591
2592 3. Implemented the mua_wrapper option.
2593
2594 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2595
2596 5. Implemented the functions header_remove(), header_testname(),
2597 header_add_at_position(), and receive_remove_recipient(), and exported them
2598 to local_scan().
2599
2600 6. If an ACL "warn" statement specified the addition of headers, Exim already
2601 inserted X-ACL-Warn: at the start if there was no header name. However, it
2602 was not making this test for the second and subsequent header lines if
2603 there were newlines in the string. This meant that an invalid header could
2604 be inserted if Exim was badly configured.
2605
2606 7. Allow an ACL "warn" statement to add header lines at the start or after all
2607 the Received: headers, as well as at the end.
2608
2609 8. Added the rcpt_4xx retry error code.
2610
2611 9. Added postmaster_mailfrom=xxx to callout verification option.
2612
261310. Added mailfrom=xxxx to the callout verification option, for verify=
2614 header_sender only.
2615
261611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2617 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2618
261912. Inserted some casts to stop certain compilers warning when using pointer
2620 differences as field lengths or precisions in printf-type calls (mostly
2621 affecting debugging statements).
2622
262313. Added optional readline() support for -be (dynamically loaded).
2624
262514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2626 same clock tick as a message's arrival, so that its received time was the
2627 same as the "first fail" time on the retry record, and that message
2628 remained on the queue past the ultimate address timeout, every queue runner
2629 would try a delivery (because it was past the ultimate address timeout) but
2630 after another failure, the ultimate address timeout, which should have then
2631 bounced the address, did not kick in. This was a "< instead of <=" error;
2632 in most cases the first failure would have been in the next clock tick
2633 after the received time, and all would be well.
2634
263515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2636 being recognized when the domain list was tested by the match_domain
2637 condition in an expansion string.
2638
263916. Added the ${str2b64: operator.
2640
264117. Exim was always calling setrlimit() to set a large limit for the number of
2642 processes, without checking whether the existing limit was already
2643 adequate. (It did check for the limit on file descriptors.) Furthermore,
2644 errors from getrlimit() and setrlimit() were being ignored. Now they are
2645 logged to the main and panic logs, but Exim does carry on, to try to do its
2646 job under whatever limits there are.
2647
264818. Imported PCRE 5.0.
2649
265019. Trivial typo in log message " temporarily refused connection" (the leading
2651 space).
2652
265320. If the log selector return_path_on_delivery was set and an address was
2654 redirected to /dev/null, the delivery process crashed because it assumed
2655 that a return path would always be set for a "successful" delivery. In this
2656 case, the whole delivery is bypassed as an optimization, and therefore no
2657 return path is set.
2658
265921. Internal re-arrangement: the function for sending a challenge and reading
2660 a response while authentication was assuming a zero-terminated challenge
2661 string. It's now changed to take a pointer and a length, to allow for
2662 binary data in such strings.
2663
266422. Added the cyrus_sasl authenticator (code supplied by MBM).
2665
266623. Exim was not respecting finduser_retries when seeking the login of the
2667 uid under which it was called; it was always trying 10 times. (The default
2668 setting of finduser_retries is zero.) Also, it was sleeping after the final
2669 failure, which is pointless.
2670
267124. Implemented tls_on_connect_ports.
2672
267325. Implemented acl_smtp_predata.
2674
267526. If the domain in control=submission is set empty, Exim assumes that the
2676 authenticated id is a complete email address when it generates From: or
2677 Sender: header lines.
2678
267927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2680 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2681 chown and chgrp in /bin and hostname in /usr/bin.
2682
268328. Exim was keeping the "process log" file open after each use, just as it
2684 does for the main log. This opens the possibility of it remaining open for
2685 long periods when the USR1 signal hits a daemon. Occasional processlog
2686 errors were reported, that could have been caused by this. Anyway, it seems
2687 much more sensible not to leave this file open at all, so that is what now
2688 happens.
2689
269029. The long-running daemon process does not normally write to the log once it
2691 has entered its main loop, and it closes the log before doing so. This is
2692 so that log files can straightforwardly be renamed and moved. However,
2693 there are a couple of unusual error situations where the daemon does write
2694 log entries, and I had neglected to close the log afterwards.
2695
269630. The text of an SMTP error response that was received during a remote
2697 delivery was being truncated at 512 bytes. This is too short for some of
2698 the long messages that one sometimes sees. I've increased the limit to
2699 1024.
2700
270131. It is now possible to make retry rules that apply only when a message has a
2702 specific sender, in particular, an empty sender.
2703
270432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2705 it possible to be selective about when SMTP synchronization is enforced.
2706
270733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2708
270932. Implemented hosts_connection_nolog.
2710
271133. Added an ACL for QUIT.
2712
271334. Setting "delay_warning=" to disable warnings was not working; it gave a
2714 syntax error.
2715
271635. Added mailbox_size and mailbox_filecount to appendfile.
2717
271836. Added control = no_multiline_responses to ACLs.
2719
272037. There was a bug in the logic of the code that waits for the clock to tick
2721 in the case where the clock went backwards by a substantial amount such
2722 that the microsecond fraction of "now" was more than the microsecond
2723 fraction of "then" (but the whole seconds number was less).
2724
272538. Added support for the libradius Radius client library this is found on
2726 FreeBSD (previously only the radiusclient library was supported).
2727
2728
2729Exim version 4.42
2730-----------------
2731
2732 1. When certain lookups returned multiple values in the form name=value, the
2733 quoting of the values was not always being done properly. Specifically:
2734 (a) If the value started with a double quote, but contained no whitespace,
2735 it was not quoted.
2736 (b) If the value contained whitespace other than a space character (i.e.
2737 tabs or newlines or carriage returns) it was not quoted.
2738 This fix has been applied to the mysql and pgsql lookups by writing a
2739 separate quoting function and calling it from the lookup code. The fix
2740 should probably also be applied to nisplus, ibase and oracle lookups, but
2741 since I cannot test any of those, I have not disturbed their existing code.
2742
2743 2. A hit in the callout cache for a specific address caused a log line with no
2744 reason for rejecting RCPT. Now it says "Previous (cached) callout
2745 verification failure".
2746
2747 3. There was an off-by-one bug in the queryprogram router. An over-long
2748 return line was truncated at 256 instead of 255 characters, thereby
2749 overflowing its buffer with the terminating zero. As well as fixing this, I
2750 have increased the buffer size to 1024 (and made a note to document this).
2751
2752 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2753 when Exim is waiting for an SMTP response from a remote server, Exim
2754 restarts its select() call on the socket, thereby resetting its timeout.
2755 This is not a problem when such interrupts are rare. Somebody set up a cron
2756 job to run exiwhat every 2 minutes, which is less than the normal select()
2757 timeout (5 or 10 minutes). This meant that the select() timeout never
2758 kicked in because it was always reset. I have fixed this by comparing the
2759 time when an interrupt arrives with the time at the start of the first call
2760 to select(). If more time than the timeout has elapsed, the interrupt is
2761 treated as a timeout.
2762
2763 5. Some internal re-factoring in preparation for the addition of Sieve
2764 extensions (by MH). In particular, the "personal" test is moved to a
2765 separate function, and given an option for scanning Cc: and Bcc: (which is
2766 not set for Exim filters).
2767
2768 6. When Exim created an email address using the login of the caller as the
2769 local part (e.g. when creating a From: or Sender: header line), it was not
2770 quoting the local part when it contained special characters such as @.
2771
2772 7. Installed new OpenBSD configuration files.
2773
2774 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2775 try to make them clearer.
2776
2777 9. Callout options, other than the timeout value, were being ignored when
2778 verifying sender addresses in header lines. For example, when using
2779
2780 verify = header_sender/callout=no_cache
2781
2782 the cache was (incorrectly) being used.
2783
278410. Added a missing instance of ${EXE} to the exim_install script; this affects
2785 only the Cygwin environment.
2786
278711. When return_path_on_delivery was set as a log selector, if different remote
2788 addresses in the same message used different return paths and parallel
2789 remote delivery occurred, the wrong values would sometimes be logged.
2790 (Whenever a remote delivery process finished, the return path value from
2791 the most recently started remote delivery process was logged.)
2792
279312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2794 lines when AUTH and/or TLS are in use. This is the "received protocol"
2795 field. Exim used to use "asmtp" for authenticated SMTP, without any
2796 indication (in the protocol name) for TLS use. Now it follows the RFC and
2797 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2798 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2799 names appear in log lines as well as in Received: header lines.
2800
280113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2802 extensions, and comparison tests, and to fix some bugs.
2803
280414. Changes to the "personal" filter test:
2805
2806 (1) The test was buggy in that it was just doing the equivalent of
2807 "contains" tests on header lines. For example, if a user's address was
2808 anne@some.where, the "personal" test would incorrectly be true for
2809
2810 To: susanne@some.where
2811
2812 This test is now done by extracting each address from the header in turn,
2813 and checking the entire address. Other tests that are part of "personal"
2814 are now done using regular expressions (for example, to check local parts
2815 of addresses in From: header lines).
2816
2817 (2) The list of non-personal local parts in From: addresses has been
2818 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2819 taken from the Sieve specification recommendations.
2820
2821 (3) If the message contains any header line starting with "List-" it is
2822 treated as non-personal.
2823
2824 (4) The test for "circular" in the Subject: header line has been removed
2825 because it now seems ill-conceived.
2826
282715. Minor typos in src/EDITME comments corrected.
2828
282916. Installed latest exipick from John Jetmore.
2830
283117. If headers_add on a router specified a text string that was too long for
2832 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2833 of string_sprintf() is now avoided.
2834
283518. $message_body_size was not set (it was always zero) when running the DATA
2836 ACL and the local_scan() function.
2837
283819. For the "mail" command in an Exim filter, no default was being set for
2839 the once_repeat time, causing a random time value to be used if "once" was
2840 specified. (If the value happened to be <= 0, no repeat happened.) The
2841 default is now 0s, meaning "never repeat". The "vacation" command was OK
2842 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2843 (I found it when inspecting the code).
2844
284520. There is now an overall timeout for performing a callout verification. It
2846 defaults to 4 times the callout timeout, which applies to individual SMTP
2847 commands during the callout. The overall timeout applies when there is more
2848 than one host that can be tried. The timeout is checked before trying the
2849 next host. This prevents very long delays if there are a large number of
2850 hosts and all are timing out (e.g. when the network connections are timing
2851 out). The value of the overall timeout can be changed by specifying an
2852 additional sub-option for "callout", called "maxwait". For example:
2853
2854 verify = sender/callout=5s,maxwait=20s
2855
285621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2857 to the end before writing, but this should make it even safer).
2858
285922. Exim was forgetting that it had advertised PIPELINING for the second and
2860 subsequent messages on an SMTP connection. It was also not resetting its
2861 memory on STARTTLS and an internal HELO.
2862
286323. When Exim logs an SMTP synchronization error within a session, it now
2864 records whether PIPELINING has been advertised or not.
2865
286624. Added 3 instances of "(long int)" casts to time_t variables that were being
2867 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2868 rather than long int.
2869
287025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2871
287226. Added the never_mail option to autoreply.
2873
2874
2875Exim version 4.41
2876-----------------
2877
2878 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2879 crash if the getsockname() call failed; this can happen if a connection is
2880 closed very soon after it is established. The problem was simply in the
2881 order in which certain operations were done, causing Exim to try to write
2882 to the SMTP stream before it had set up the file descriptor. The bug has
2883 been fixed by making things happen in the correct order.
2884
2885
2886Exim version 4.40
2887-----------------
2888
2889 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2890 before the connection was closed, thus losing the rejection response.
2891
2892 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2893 some early Solaris releases, but causes trouble in current releases where
2894 socklen_t is defined.
2895
2896 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2897 always exist.
2898
2899 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2900 configured.
2901
2902 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2903 that releasing the top of it at the end releases what was used for sub-
2904 expansions (unless the block got too big). However, discard this block if
2905 the first thing is a variable or header, so that we can use its block when
2906 it is dynamic (useful for very large $message_headers, for example).
2907
2908 6. Lookups now cache *every* query, not just the most recent. A new, separate
2909 store pool is used for this. It can be recovered when all lookup caches are
2910 flushed. Lookups now release memory at the end of their result strings.
2911 This has involved some general refactoring of the lookup sources.
2912
2913 7. Some code has been added to the store_xxx() functions to reduce the amount
2914 of flapping under certain conditions.
2915
2916 8. log_incoming_interface used to affect only the <= reception log lines. Now
2917 it causes the local interface and port to be added to several more SMTP log
2918 lines, for example "SMTP connection from", and rejection lines.
2919
2920 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2921
292210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2923
292411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2925 could be overwritten at the end of the current message (or the start of a
2926 new message if it was set in a HELO ACL). The value is now preserved for
2927 the duration of the SMTP connection.
2928
292912. If a transport had a headers_rewrite setting, and a matching header line
2930 contained an unqualified address, that address was qualified, even if it
2931 did not match any rewriting rules. The underlying bug was that the values
2932 of the flags that permit the existence of unqualified sender and recipient
2933 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2934 non-local messages, and by -bnq for local messages) were not being
2935 preserved with the message after it was received.
2936
293713. When Exim was logging an SMTP synchronization error, it could sometimes log
2938 "next input=" as part of the text comprising the host identity instead of
2939 the correct text. The code was using the same buffer for two different
2940 strings. However, depending on which order the printing function evaluated
2941 its arguments, the bug did not always show up. Under Linux, for example, my
2942 test suite worked just fine.
2943
294414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2945 doesn't work with some older versions of Perl. It has been changed to "my",
2946 which in any case is probably the better facility to use.
2947
294815. A really picky compiler found some instances of statements for creating
2949 error messages that either had too many or two few arguments for the format
2950 string.
2951
295216. The size of the buffer for calls to the DNS resolver has been increased
2953 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2954 for addresses that have a lot of PTR records. This alleviates a problem; it
2955 does not fully solve it.
2956
295717. A dnsdb lookup for PTR records that receives more data than will fit in the
2958 buffer now truncates the list and logs the incident, which is the same
2959 action as happens when Exim is looking up a host name and its aliases.
2960 Previously in this situation something unpredictable would happen;
2961 sometimes it was "internal error: store_reset failed".
2962
296318. If a server dropped the connection unexpectedly when an Exim client was
2964 using GnuTLS and trying to read a response, the client delivery process
2965 crashed while trying to generate an error log message.
2966
296719. If a "warn" verb in an ACL added multiple headers to a message in a single
2968 string, for example:
2969
2970 warn message = H1: something\nH2: something
2971
2972 the text was added as a single header line from Exim's point of view
2973 though it ended up OK in the delivered message. However, searching for the
2974 second and subsequent header lines using $h_h2: did not work. This has been
2975 fixed. Similarly, if a system filter added multiple headers in this way,
2976 the routers could not see them.
2977
297820. Expanded the error message when iplsearch is called with an invalid key to
2979 suggest using net-iplsearch in a host list.
2980
298121. When running tests using -bh, any delays imposed by "delay" modifiers in
2982 ACLs are no longer actually imposed (and a message to that effect is
2983 output).
2984
298522. If a "gecos" field in a passwd entry contained escaped characters, in
2986 particular, if it contained a \" sequence, Exim got it wrong when building
2987 a From: or a Sender: header from that name. A second bug also caused
2988 incorrect handling when an unquoted " was present following a character
2989 that needed quoting.
2990
299123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2992 was not being matched caselessly.
2993
299424. Arranged for all hyphens in the exim.8 source to be escaped with
2995 backslashes.
2996
299725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2998 properly. Recipient callout cache records were still being keyed to include
2999 the sender, even when use_sender was set false. This led to far more
3000 callouts that were necessary. The sender is no longer included in the key
3001 when use_sender is false.
3002
300326. Added "control = submission" modifier to ACLs.
3004
300527. Added the ${base62d: operator to decode base 62 numbers.
3006
300728. dnsdb lookups can now access SRV records.
3008
300929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3010 the configuration file.
3011
301230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3013 (-v) mode. This makes the output for a verbose queue run more intelligible.
3014
301531. Added a use_postmaster feature to recipient callouts.
3016
301732. Added the $body_zerocount variable, containing the number of binary zero
3018 bytes in the message body.
3019
302033. The time of last modification of the "new" subdirectory is now used as the
3021 "mailbox time last read" when there is a quota error for a maildir
3022 delivery.
3023
302434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3025
302635. Added +ignore_unknown as a special item in host lists.
3027
302836. Code for decoding IPv6 addresses in host lists is now included, even if
3029 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3030 address was recognized as an IP address, but was then not correctly decoded
3031 into binary, causing unexpected and incorrect effects when compared with
3032 another IP address.
3033
3034
3035Exim version 4.34
3036-----------------
3037
3038 1. Very minor rewording of debugging text in manualroute to say "list of
3039 hosts" instead of "hostlist".
3040
3041 2. If verify=header_syntax was set, and a header line with an unqualified
3042 address (no domain) and a large number of spaces between the end of the
3043 name and the colon was received, the reception process suffered a buffer
3044 overflow, and (when I tested it) crashed. This was caused by some obsolete
3045 code that should have been removed. The fix is to remove it!
3046
3047 3. When running in the test harness, delay a bit after writing a bounce
3048 message to get a bit more predictability in the log output.
3049
3050 4. Added a call to search_tidyup() just before forking a reception process. In
3051 theory, someone could use a lookup in the expansion of smtp_accept_max_
3052 per_host which, without the tidyup, could leave open a database connection.
3053
3054 5. Added the variables $recipient_data and $sender_data which get set from a
3055 lookup success in an ACL "recipients" or "senders" condition, or a router
3056 "senders" option, similar to $domain_data and $local_part_data.
3057
3058 6. Moved the writing of debug_print from before to after the "senders" test
3059 for routers.
3060
3061 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3062 problems for message scanning, either using a data ACL, or using
3063 local_scan() because the Received: header was not generated till after they
3064 were called (in order to set the time as the time of reception completion).
3065 I have revised the way this works. The header is now generated after the
3066 body is received, but before the ACL or local_scan() are called. After they
3067 are run, the timestamp in the header is updated.
3068
3069
3070Exim version 4.33
3071-----------------
3072
3073 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3074 before starting a queue runner without re-exec. This happened only when
3075 deliver_drop_privilege was set or when the Exim user was set to root. The
3076 effect of the bug was that timeouts during subsequent deliveries caused
3077 crashes instead of being properly handled. The handler is now left at its
3078 default (and expected) setting.
3079
3080 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3081 message, again when deliver_drop_privilege is set or Exim is run as root.
3082 The bug described in (1) was not present in this case, but the tidying up
3083 of the other signals was missing. I have made the two cases consistent.
3084
3085 3. The ignore_target_hosts setting on a manualroute router was being ignored
3086 for hosts that were looked up using the /MX notation.
3087
3088 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3089 in domain lists.
3090
3091 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3092 operated on the sender address. After changing the $sender_address to <>
3093 for the sender address verify, Exim was re-instated it as the original
3094 (before rewriting) address, but remembering that it had rewritten it, so it
3095 wasn't rewriting it again. This bug also had the effect of breaking the
3096 sender address verification caching when the sender address was rewritten.
3097
3098 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3099 This has been changed so that if the ip literal address matches
3100 ignore_target_hosts, the router declines.
3101
3102 7. Added expansion conditions match_domain, match_address, and match_local_
3103 part (NOT match_host).
3104
3105 8. The placeholder for the Received: header didn't have a length field set.
3106
3107 9. Added code to Exim itself and to exim_lock to test for a specific race
3108 condition that could lead to file corruption when using MBX delivery. The
3109 issue is with the lockfile that is created in /tmp. If this file is removed
3110 after a process has opened it but before that process has acquired a lock,
3111 there is the potential for a second process to recreate the file and also
3112 acquire a lock. This could lead to two Exim processes writing to the file
3113 at the same time. The added code performs the same test as UW imapd; it
3114 checks after acquiring the lock that its file descriptor still refers to
3115 the same named file.
3116
311710. The buffer for building added header lines was of fixed size, 8192 bytes.
3118 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3119 when Exim is built.
3120
312111. Added the smtp_active_hostname option. If used, this will typically be made
3122 to depend on the incoming interface address. Because $interface_address is
3123 not set up until the daemon has forked a reception process, error responses
3124 that can happen earlier (such as "too many connections") no longer contain
3125 a host name.
3126
312712. If an expansion in a condition on a "warn" statement fails because a lookup
3128 defers, the "warn" statement is abandoned, and the next ACL statement is
3129 processed. Previously this caused the whole ACL to be aborted.
3130
313113. Added the iplsearch lookup type.
3132
313314. Added ident_timeout as a log selector.
3134
313515. Added tls_certificate_verified as a log selector.
3136
313716. Added a global option tls_require_ciphers (compare the smtp transport
3138 option of the same name). This controls incoming TLS connections.
3139
314017. I finally figured out how to make tls_require_ciphers do a similar thing
3141 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3142 before starting the TLS session.
3143
314418. Tabs are now shown as \t in -bP output.
3145
314619. If the log selector return_path_on_delivery was set, Exim crashed when
3147 bouncing a message because it had too many Received: header lines.
3148
314920. If two routers both had headers_remove settings, and the first one included
3150 a superfluous trailing colon, the final name in the first list and the
3151 first name in the second list were incorrectly joined into one item (with a
3152 colon in the middle).
3153
3154
3155Exim version 4.32
3156-----------------
3157
3158 1. Added -C and -D options to the exinext utility, mainly to make it easier
3159 to include in the automated testing, but these could be helpful when
3160 multiple configurations are in use.
3161
3162 2. The exinext utility was not formatting the output nicely when there was
3163 an alternate port involved in the retry record key, nor when there was a
3164 message id as well (for retries that were specific to a specific message
3165 and a specific host). It was also confused by IPv6 addresses, because of
3166 the additional colons they contain. I have fixed the IPv4 problem, and
3167 patched it up to do a reasonable job for IPv6.
3168
3169 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3170 delivery, the log line now contains "pipelined" if PIPELINING was used.
3171
3172 4. An SMTP transport process used to panic and die if the bind() call to set
3173 an explicit outgoing interface failed. This has been changed; it is now
3174 treated in the same way as a connect() failure.
3175
3176 5. A reference to $sender_host_name in the part of a conditional expansion
3177 that was being skipped was still causing a DNS lookup. This no longer
3178 occurs.
3179
3180 6. The def: expansion condition was not recognizing references to header lines
3181 that used bh_ and bheader_.
3182
3183 7. Added the _cache feature to named lists.
3184
3185 8. The code for checking quota_filecount in the appendfile transport was
3186 allowing one more file than it should have been.
3187
3188 9. For compatibility with Sendmail, the command line option
3189
3190 -prval:sval
3191
3192 is equivalent to
3193
3194 -oMr rval -oMs sval
3195
3196 and sets the incoming protocol and host name (for trusted callers). The
3197 host name and its colon can be omitted when only the protocol is to be set.
3198 Note the Exim already has two private options, -pd and -ps, that refer to
3199 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3200 "s", but I don't think that's a major issue.
3201
320210. A number of refactoring changes to the code, none of which should affect
3203 Exim's behaviour:
3204
3205 (a) The number of logging options was getting close to filling up the
3206 32-bit word that was used as a bit map. I have split them into two classes:
3207 those that are passed in the argument to log_write(), and those that are
3208 only ever tested independently outside of that function. These are now in
3209 separate 32-bit words, so there is plenty of room for expansion again.
3210 There is no change in the user interface or the logging behaviour.
3211
3212 (b) When building, for example, log lines, the code previously used a
3213 macro that called string_cat() twice, in order to add two strings. This is
3214 not really sufficiently general. Furthermore, there was one instance where
3215 it was actually wrong because one of the argument was used twice, and in
3216 one call a function was used. (As it happened, calling the function twice
3217 did not affect the overall behaviour.) The macro has been replaced by a
3218 function that can join an arbitrary number of extra strings onto a growing
3219 string.
3220
3221 (c) The code for expansion conditions now uses a table and a binary chop
3222 instead of a serial search (which was left over from when there were very
3223 few conditions). Also, it now recognizes conditions like "pam" even when
3224 the relevant support is not compiled in: a suitably worded error message is
3225 given if an attempt is made to use such a condition.
3226
322711. Added ${time_interval:xxxxx}.
3228
322912. A bug was causing one of the ddress fields not to be passed back correctly
3230 from remote delivery subprocesses. The field in question was not being
3231 subsequently used, so this caused to problems in practice.
3232
323313. Added new log selectors queue_time and deliver_time.
3234
323514. Might have fixed a bug in maildirsizefile handling that threw up
3236 "unexpected character" debug warnings, and recalculated the data
3237 unnecessarily. In any case, I expanded the warning message to give more
3238 information.
3239
324015. Added the message "Restricted characters in address" to the statements in
3241 the default ACL that block characters like @ and % in local parts.
3242
324316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3244 Three changes have been made:
3245
3246 (a) There was a serious bug; a negative response to MAIL caused the whole
3247 recipient domain to be cached as invalid, thereby blocking all messages
3248 to all local parts at the same domain, from all senders. This bug has
3249 been fixed. The domain is no longer cached after a negative response to
3250 MAIL if the sender used is not empty.
3251
3252 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3253 been restored.
3254
3255 (c) A new callout option, "use_sender" has been added for people who want
3256 the modified behaviour.
3257
3258
3259Exim version 4.31
3260-----------------
3261
3262 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3263 Larry Rosenman.
3264
3265 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3266 indeed breaks things for older releases.
3267
3268 3. Added additional logging to the case where there is a problem reading data
3269 from a filter that is running in a subprocess using a pipe, in order to
3270 try to track down a specific problem.
3271
3272 4. Testing facility fudge: when running in the test harness and attempting
3273 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3274 getting "No route to host". Convert this to a timeout.
3275
3276 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3277 warning.
3278
3279 6. Some OS don't have socklen_t but use size_t instead. This affects the
3280 fifth argument of getsockopt() amongst other things. This is now
3281 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3282 can be set for individual OS. I have set it for SunOS5, OSF1, and
3283 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3284 some earlier ones do not.
3285
3286 7. Change 4.30/15 was not doing the test caselessly.
3287
3288 8. The standard form for an IPv6 address literal was being rejected by address
3289 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3290 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3291 this, as well as the form without the "IPv6" on the front (but only when
3292 address literals are enabled, of course).
3293
3294 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3295
329610. Exim crashed if a message with an empty sender address specified by -f
3297 encountered a router with an errors_to setting. This could be provoked only
3298 by a command such as
3299
3300 exim -f "" ...
3301
3302 where an empty string was supplied; "<>" did not hit this bug.
3303
330411. Installed PCRE release 4.5.
3305
330612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3307 remained set. It is now erased.
3308
330913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3310 times from message ids (which are base 36 rather than the normal 62).
3311
331214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3313 were being counted as actual protocol errors, and logged if the log
3314 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3315 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3316 and DATA following a set of rejected RCPTs do not count as protocol errors.
3317 In other words, Exim assumes they were pipelined, though this may not
3318 actually be the case. Of course, in all cases the client gets an
3319 appropriate error code.
3320
332115. If a lookup fails in an ACL condition, a message about the failure may
3322 be available; it is used if testing the ACL cannot continue, because most
3323 such messages specify what the cause of the deferral is. However, some
3324 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3325 that caused an old message to be retained and used if a later statement
3326 caused a defer, replacing the real cause of the deferral.
3327
332816. If an IP address had so many PTR records that the DNS lookup buffer
3329 was not large enough to hold them, Exim could crash while trying to process
3330 the truncated data. It now detects and logs this case.
3331
333217. Further to 4.21/58, another change has been made: if (and only if) the
3333 first line of a message (the first header line) ends with CRLF, a bare LF
3334 in a subsequent header line has a space inserted after it, so as not to
3335 terminate the header.
3336
333718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3338 unnecessarily, used atoi() instead of strtol(), and didn't check the
3339 termination when getting file sizes from file names by regex.
3340
334119. Completely re-implemented the support for maildirsize files, in the light
3342 of a number of problems with the previous contributed implementation
3343 (4.30/29). In particular:
3344
3345 . If the quota is zero, the maildirsize file is maintained, but no quota is
3346 imposed.
3347
3348 . If the maildir directory does not exist, it is created before any attempt
3349 to write a maildirsize file.
3350
3351 . The quota value in the file is just a cache; if the quota is changed in
3352 the transport, the new value overrides.
3353
3354 . A regular expression is available for excluding directories from the
3355 count.
3356
335720. The autoreply transport checks the characters in options that define the
3358 message's headers; it allows continued headers, but it was checking with
3359 isspace() after an embedded newline instead of explicitly looking for a
3360 space or a tab.
3361
336221. If all the "regular" hosts to which an address was routed had passed their
3363 expiry times, and had not reached their retry times, the address was
3364 bounced, even if fallback hosts were defined. Now Exim should go on to try
3365 the fallback hosts.
3366
336722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3368 equivalent code in the SMTP transport. Some hosts send humungous responses
3369 to HELO/EHLO, more than 1024 it seems.
3370
337123. Refactoring: code in filter.c used (void *) for "any old type" but this
3372 gives compiler warnings in some environments. I've now done it "properly",
3373 using a union.
3374
337524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3376 (because of problems with the built-in one) was declared to return uschar *
3377 instead of char *, causing compiler failure.
3378
337925. Fixed a file descriptor leak when processing alias/forward files.
3380
338126. Fixed a minor format string issue in dbfn.c.
3382
338327. Typo in exim.c: ("dmbnz" for "dbmnz").
3384
338528. If a filter file refered to $h_xxx or $message_headers, and the headers
3386 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3387 become corrupted.
3388
338929. When a sender address is verified, it is cached, to save repeating the test
3390 when there is more than one recipient in a message. However, when the
3391 verification involves a callout, it is possible for different callout
3392 options to be set for different recipients. It is too complicated to keep
3393 track of this in the cache, so now Exim always runs a verification when a
3394 callout is required, relying on the callout cache for the optimization.
3395 The overhead is duplication of the address routing, but this should not be
3396 too great.
3397
339830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3399 to be verified with callout=postmaster, and the main callout worked but the
3400 postmaster check failed, the verification correctly failed. However, if a
3401 subsequent RCPT command asked for sender verification *without* the
3402 postmaster check, incorrect caching caused this verification also to fail,
3403 incorrectly.
3404
340531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3406 it was not caching the DNS options (qualify_single, search_parents) that
3407 were used when the lookup failed. A subsequent lookup with different
3408 options therefore always gave the same answer, though there were cases
3409 where it should not have. (Example: a "domains = !$mx_any" option on a
3410 dnslookup router: the "domains" option is always processed without any
3411 widening, but the router might have qualify_single set.) Now Exim uses the
3412 cached value only when the same options are set.
3413
341432. Added John Jetmore's "exipick" utility to the distribution.
3415
341633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3417 than a timeout (e.g. a certificate is required, and is not provided), an
3418 Exim server now closes the connection immediately. Previously it waited for
3419 the client to close - but if the client is SSL, it seems that they each
3420 wait for each other, leading to a delay before one of them times out.
3421
342234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3423 maintained 0.8.x compatibility because I don't think many are using it, and
3424 it is clearly obsolete.
3425
342635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3427 transport.
3428
342936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3430 client certificate was expired. A simple patch fixes this, though I don't
3431 understand the full logic of why the verify callback is called multiple
3432 times.
3433
343437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3435 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3436 which causes problems with some clients (such as the Certicom SSL Plus
3437 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3438 disables the coutermeasure allowing Eudora to connect."
3439
344038. Exim was not checking that a write() to a log file succeeded. This could
3441 lead to Bad Things if a log got too big, in particular if it hit a file
3442 size limit. Exim now panics and dies if it cannot write to a log file, just
3443 as it does if it cannot open a log file.
3444
344539. Modified OS/Makefile-Linux so that it now contains
3446
3447 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3448
3449 The two -D definitions ensure that Exim is compiled with large file
3450 support, which makes it possible to handle log files that are bigger than
3451 2^31.
3452
345340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3454 instance) a domain was checked against a named list that involved a lookup,
3455 causing $domain_data to be set, then another domain was checked against the
3456 same list, then the first domain was re-checked, the value of $domain_data
3457 after the final check could be wrong. In particular, if the second check
3458 failed, it could be set empty. This bug probably also applied to
3459 $localpart_data.
3460
346141. The strip_trailing_dot option was not being applied to the address given
3462 with the -f command-line option.
3463
346442. The code for reading a message's header from the spool was incrementing
3465 $received_count, but never initializing it. This meant that the value was
3466 incorrect (doubled) while delivering a message in the same process in which
3467 it was received. In the most common configuration of Exim, this never
3468 happens - a fresh exec is done - but it can happen when
3469 deliver_drop_privilege is set.
3470
347143. When Exim logs an SMTP synchronization error - client data sent too soon -
3472 it now includes up to 150 characters of the unexpected data in the log
3473 line.
3474
347544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3476 and building data strings. The size of both of these buffers was 10 000
3477 bytes - far larger than anybody would *ever* want, thought I. Needless to
3478 say, somebody hit the limit. I have increased the maximum line length to
3479 20 000 and the maximum data length of concatenated lines to 100 000. I have
3480 also fixed two bugs, because there was no checking on these buffers. Tsk,
3481 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3482 buffer is too small.
3483
348445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3485 lsearch lookups. Now it does.
3486
348746. When parsing a route_list item in a manualroute router, a fixed-length
3488 buffer was used for the list of hosts. I made this 1024 bytes long,
3489 thinking that nobody would ever have a list of hosts that long. Wrong.
3490 Somebody had a whole pile of complicated expansion conditions, and the
3491 string was silently truncated, leading to an expansion error. It turns out
3492 that it is easier to change to an unlimited length (owing to other changes
3493 that have happened since this code was originally written) than to build
3494 structure for giving a limitation error. The length of the item that
3495 expands into the list of hosts is now unlimited.
3496
349747. The lsearch lookup could not handle data where the length of text line was
3498 more than 4095 characters. Such lines were truncated, leading to shortened
3499 data being returned. It should now handle lines of any length.
3500
350148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3502 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3503 ACL").
3504
350549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3506 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3507 no longer happens in comment lines. A list of replacements is now placed
3508 at the head of all of the source files, except those whose only change is
3509 to replace PERL_COMMAND in the very first #! line.
3510
351150. Replaced the slow insertion sort in queue.c, for sorting the list of
3512 messages on the queue, with a bottom-up merge sort, using code contributed
3513 by Michael Haardt. This should make operations like -bp somewhat faster on
3514 large queues. It won't affect queue runners, except when queue_run_in_order
3515 is set.
3516
351751. Installed eximstats 1.31 in the distribution.
3518
351952. Added support for SRV lookups to the dnslookup router.
3520
352153. If an ACL referred to $message_body or $message_body_end, the value was not
3522 reset for any messages that followed in the same SMTP session.
3523
352454. The store-handling optimization for building very long strings was not
3525 differentiating between the different store pools. I don't think this
3526 actually made any difference in practice, but I've tidied it.
3527
352855. While running the routers to verify a sender address, $sender_address
3529 was still set to the sender address. This is wrong, because when routing to
3530 send a bounce to the sender, it would be empty. Therefore, I have changed
3531 it so that, while verifying a sender address, $sender_address is set to <>.
3532 (There is no change to what happens when verifying a recipient address.)
3533
353456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3535 target A or AAAA records (if not already returned) without resetting the
3536 qualify_single or search_parents options of the DNS resolver. These are
3537 inappropriate in this case because the targets of MX and SRV records must
3538 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3539 target that, when qualified, matched something in the local domain. These
3540 two options are now turned off when doing these lookups.
3541
354257. It seems that at least some releases of Reiserfs (which does not have the
3543 concept of a fixed number of inodes) returns zero and not -1 for the
3544 number of available inodes. This interacted badly with check_spool_inodes,
3545 which assumed that -1 was the "no such thing" setting. What I have done is
3546 to check that the total number of inodes is greater than zero before doing
3547 the test of how many are available.
3548
354958. When a "warn" ACL statement has a log_message modifier, the message is
3550 remembered, and not repeated. This is to avoid a lot of repetition when a
3551 message has many recipients that cause the same warning to be written.
3552 Howewer, Exim was preserving the list of already written lines for an
3553 entire SMTP session, which doesn't seem right. The memory is now reset if a
3554 new message is started.
3555
355659. The "rewrite" debugging flag was not showing the result of rewriting in the
3557 debugging output unless log_rewrite was also set.
3558
355960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3560 of (int)(handle) when we know that handle contains (void *)(-1).
3561
356261. The Exim daemon panic-logs an error return when it closes the incoming
3563 connection. However "connection reset by peer" seems to be common, and
3564 isn't really an error worthy of noting specially, so that particular error
3565 is no long logged.
3566
356762. When Exim is trying to find all the local interfaces, it used to panic and
3568 die if the ioctl to get the interface flags failed. However, it seems that
3569 on at least one OS (Solaris 9) it is possible to have an interface that is
3570 included in the list of interfaces, but for which you get a failure error
3571 for this call. This happens when the interface is not "plumbed" into a
3572 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3573 failure of the "get flags" call assumes that the interface is down.
3574
357563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3576 makes life easier for people who are doing arithmetic on fields extracted
3577 from dates, where you often get leading zeros that should not be
3578 interpreted as octal.
3579
358064. Added qualify_domain to the redirect router, to override the global
3581 setting.
3582
358365. If a pathologically long header line contained very many addresses (the
3584 report of this problem mentioned 10 000) and each of them was rewritten,
3585 Exim could use up a very large amount of memory. (It kept on making new
3586 copies of the header line as it rewrote, and never released the old ones.)
3587 At the expense of a bit more processing, the header rewriting function has
3588 been changed so that it no longer eats memory in this way.
3589
359066. The generation of the Received: header has been moved from the time t