Jori Hamalainen's patch to speed up exigrep, and fix two typos.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
75b1493f 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.475 2007/02/07 12:23:35 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
b4ed4da0 97
5dd1517f
PH
98Exim version 4.66
99-----------------
100
101PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
102 fixed by 4.65/MH/01 (is this a record?) are fixed:
103
104 (i) An empty string was always treated as zero by the numeric comparison
105 operators. This behaviour has been restored.
106
107 (ii) It is documented that the numeric comparison operators always treat
108 their arguments as decimal numbers. This was broken in that numbers
109 starting with 0 were being interpreted as octal.
110
111 While fixing these problems I realized that there was another issue that
112 hadn't been noticed. Values of message_size_limit (both the global option
113 and the transport option) were treated as octal if they started with 0.
114 The documentation was vague. These values are now always treated as
115 decimal, and I will make that clear in the documentation.
116
117
93cfa765
TK
118Exim version 4.65
119-----------------
120
121TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
122 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
123 versions. (#438)
124
d6066548
MH
125MH/01 Don't check that the operands of numeric comparison operators are
126 integers when their expansion is in "skipping" mode (fixes bug
127 introduced by 4.64-PH/07).
128
4362ff0d
PH
129PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
130 child addresses, Exim now panics and dies. Previously, because the count
131 is held in a short int, deliveries were likely to be lost. As such a
132 large number of recipients for a single message is ridiculous
133 (performance will be very, very poor), I have chosen to impose a limit
134 rather than extend the field.
135
93cfa765 136
944e9e9c
TF
137Exim version 4.64
138-----------------
aa41d2de 139
21d74bd9
TK
140TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
141 leftover -K file (the existence of which was triggered by #402).
142 While we were at it, introduced process PID as part of the -K
143 filename. This should rule out race conditions when creating
144 these files.
145
146TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
147 processing considerably. Previous code took too long for large mails,
148 triggering a timeout which in turn triggers #401.
149
150TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
151 in the DK code in transports.c. sendfile() is not really portable,
152 hence the _LINUX specificness.
944e9e9c
TF
153
154TF/01 In the add_headers option to the mail command in an Exim filter,
155 there was a bug that Exim would claim a syntax error in any
156 header after the first one which had an odd number of characters
157 in the field name.
158
2b1c6e3a
PH
159PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
160 callout verification, Exim cached a "reject" for the entire domain. This
161 is correct for most verifications, but it is not correct for a recipient
162 verification with use_sender or use_postmaster set, because in that case
163 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
164 case of MAIL FROM:<> rejection from other early rejections (e.g.
165 rejection of HELO). When verifying a recipient using a non-null MAIL
166 address, the cache is ignored if it shows MAIL FROM:<> rejection.
167 Whatever the result of the callout, the value of the domain cache is
168 left unchanged (for any other kind of callout, getting as far as trying
169 RCPT means that the domain itself is ok).
170
1f872c80
PH
171PH/02 Tidied a number of unused variable and signed/unsigned warnings that
172 gcc 4.1.1 threw up.
173
174PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
175 manifest itself as EPIPE rather than ECONNECT. When tidying away a
176 session, the daemon ignores ECONNECT errors and logs others; it now
177 ignores EPIPE as well.
178
d203e649
PH
179PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
180 (quoted-printable decoding).
181
cc2ed8f7 182PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 183 later the small subsequent patch to fix an introduced bug.
f951fd57 184
ddfcd446
PH
185PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
186
d45b1de8
PH
187PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
188
189PH/08 An error is now given if message_size_limit is specified negative.
190
38a0a95f 191PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 192 to be given (somewhat) arbitrary names.
38a0a95f 193
a2405d83
JJ
194JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
195 in 4.64-PH/09.
196
197JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
198 miscellaneous code fixes
199
6ea85e9a
PH
200PH/10 Added the log_reject_target ACL modifier to specify where to log
201 rejections.
202
26da7e20
PH
203PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
204 hostname. This is wrong, because it relates to the incoming message (and
205 probably the interface on which it is arriving) and not to the outgoing
206 callout (which could be using a different interface). This has been
207 changed to use the value of the helo_data option from the smtp transport
208 instead - this is what is used when a message is actually being sent. If
209 there is no remote transport (possible with a router that sets up host
210 addresses), $smtp_active_hostname is used.
6ea85e9a 211
14aa5a05 212PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 213 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
214 (a) The code assumed that strncpy() returns a negative number on buffer
215 overflow, which isn't the case. Replaced with Exim's string_format()
216 function.
217 (b) There were several signed/unsigned issues. I just did the minimum
218 hacking in of casts. There is scope for a larger refactoring.
219 (c) The code used strcasecmp() which is not a standard C function.
220 Replaced with Exim's strcmpic() function.
221 (d) The code set only $1; it now sets $auth1 as well.
222 (e) A simple test gave the error "authentication client didn't specify
223 service in request". It would seem that Dovecot has changed its
224 interface. Fortunately there's a specification; I followed it and
225 changed what the client sends and it appears to be working now.
226
ff75a1f7
PH
227PH/13 Added $message_headers_raw to provide the headers without RFC 2047
228 decoding.
229
e6f6568e
PH
230PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
231 address A is aliased to B and C, where B exists and C does not. Without
232 -v the output is "A verified" because verification stops after a
233 successful redirection if more than one address is generated. However,
234 with -v the child addresses are also verified. Exim was outputting "A
235 failed to verify" and then showing the successful verification for C,
236 with its parentage. It now outputs "B failed to verify", showing B's
237 parentage before showing the successful verification of C.
238
d6f6e0dc
PH
239PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
240 look up a TXT record in a specific list after matching in a combined
241 list.
242
322050c2
PH
243PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
244 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
245 they consult the DNS. I had assumed they would set it the way they
246 wanted; and indeed my experiments on Linux seem to show that in some
247 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
248 To be on the safe side, however, I have now made the interface to
249 host_find_byname() similar to host_find_bydns(), with an argument
250 containing the DNS resolver options. The host_find_byname() function now
251 sets these options at its start, just as host_find_bydns() does. The smtp
252 transport options dns_qualify_single and dns_search_parents are passed to
253 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
254 of host_find_byname() use the default settings of RES_DEFNAMES
255 (qualify_single) but not RES_DNSRCH (search_parents).
256
08955dd3
PH
257PH/17 Applied (a modified version of) Nico Erfurth's patch to make
258 spool_read_header() do less string testing, by means of a preliminary
259 switch on the second character of optional "-foo" lines. (This is
260 overdue, caused by the large number of possibilities that now exist.
261 Originally there were few.) While I was there, I also converted the
262 str(n)cmp tests so they don't re-test the leading "-" and the first
263 character, in the hope this might squeeze out yet more improvement.
264
1eccaa59
PH
265PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
266 flag allowing group syntax was set by the header_syntax check but not
267 turned off, possible causing trouble later; (2) The flag was not being
268 set at all for the header_verify test, causing "group"-style headers to
269 be rejected. I have now set it in this case, and also caused header_
270 verify to ignore an empty address taken from a group. While doing this, I
271 came across some other cases where the code for allowing group syntax
272 while scanning a header line wasn't quite right (mostly, not resetting
273 the flag correctly in the right place). These bugs could have caused
274 trouble for malformed header lines. I hope it is now all correct.
275
602e59e5
PH
276PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
277 with the "reply" argument non-NULL. The code, however (which originally
278 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
279 but it didn't always do it. This confused somebody who was copying the
280 code for some other use. I have removed all the tests.
281
411ef850
PH
282PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
283 feature that was used to support insecure browsers during the U.S. crypto
284 embargo. It requires special client support, and Exim is probably the
285 only MTA that supported it -- and would never use it because real RSA is
286 always available. This code has been removed, because it had the bad
287 effect of slowing Exim down by computing (never used) parameters for the
288 RSA_EXPORT functionality.
289
7befa435
PH
290PH/21 On the advice of Timo Sirainen, added a check to the dovecot
291 authenticator to fail if there's a tab character in the incoming data
292 (there should never be unless someone is messing about, as it's supposed
293 to be base64-encoded). Also added, on Timo's advice, the "secured" option
294 if the connection is using TLS or if the remote IP is the same as the
295 local IP, and the "valid-client-cert option" if a client certificate has
296 been verified.
297
48da4259 298PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
299 authenticators. This can be used for authorization after authentication
300 succeeds. (In the case of plaintext, it servers for both authentication
301 and authorization.)
302
48da4259
PH
303PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
304 if any retry times were supplied.
305
d1d5595c
PH
306PH/24 Exim crashed if verify=helo was activated during an incoming -bs
307 connection, where there is no client IP address to check. In this
308 situation, the verify now always succeeds.
309
0ef732d9
PH
310PH/25 Applied John Jetmore's -Mset patch.
311
328895cc
PH
312PH/26 Added -bem to be like -Mset, but loading a message from a file.
313
fd700877
PH
314PH/27 In a string expansion for a processed (not raw) header when multiple
315 headers of the same name were present, leading whitespace was being
316 removed from all of them, but trailing whitespace was being removed only
317 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
318 before concatenation. Completely empty headers in a concatenation (as
319 before) are ignored.
fd700877 320
8dce1a6f
PH
321PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
322 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
323
17af4a17
PH
324PH/29 [Removed. This was a change that I later backed out, and forgot to
325 correct the ChangeLog entry (that I had efficiently created) before
326 committing the later change.]
f6c332bd
PH
327
328PH/30 Exim was sometimes attempting to deliver messages that had suffered
329 address errors (4xx response to RCPT) over the same connection as other
330 messages routed to the same hosts. Such deliveries are always "forced",
331 so retry times are not inspected. This resulted in far too many retries
332 for the affected addresses. The effect occurred only when there were more
333 hosts than the hosts_max_try setting in the smtp transport when it had
334 the 4xx errors. Those hosts that it had tried were not added to the list
335 of hosts for which the message was waiting, so if all were tried, there
336 was no problem. Two fixes have been applied:
337
338 (i) If there are any address or message errors in an SMTP delivery, none
339 of the hosts (tried or untried) are now added to the list of hosts
340 for which the message is waiting, so the message should not be a
341 candidate for sending over the same connection that was used for a
342 successful delivery of some other message. This seems entirely
343 reasonable: after all the message is NOT "waiting for some host".
344 This is so "obvious" that I'm not sure why it wasn't done
345 previously. Hope I haven't missed anything, but it can't do any
346 harm, as the worst effect is to miss an optimization.
347
348 (ii) If, despite (i), such a delivery is accidentally attempted, the
349 routing retry time is respected, so at least it doesn't keep
350 hammering the server.
351
c1114884
PH
352PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
353 in ${readsocket because some servers need this prod.
354
7a0743eb
PH
355PH/32 Added some extra debug output when updating a wait-xxx database.
356
0d85fa3f
PH
357PH/33 The hint "could be header name not terminated by colon", which has been
358 given for certain expansion errors for a long time, was not being given
359 for the ${if def:h_colon_omitted{... case.
360
1bf43b78
PH
361PH/34 The spec says: "With one important exception, whenever a domain list is
362 being scanned, $domain contains the subject domain." There was at least
363 one case where this was not true.
364
520de300
PH
365PH/35 The error "getsockname() failed: connection reset by peer" was being
366 written to the panic log as well as the main log, but it isn't really
367 panic-worthy as it just means the connection died rather early on. I have
368 removed the panic log writing for the ECONNRESET error when getsockname()
369 fails.
370
48c7f9e2
PH
371PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
372 runs only) independently of the message's sender address. This meant
373 that, if the 4xx error was in fact related to the sender, a different
374 message to the same recipient with a different sender could confuse
375 things. In particualar, this can happen when sending to a greylisting
376 server, but other circumstances could also provoke similar problems.
377 I have changed the default so that the retry time for these errors is now
378 based a combination of the sender and recipient addresses. This change
379 can be overridden by setting address_retry_include_sender=false in the
380 smtp transport.
381
99ea1c86
PH
382PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
383 remote server are returned as part of bounce messages. This was not
384 happening for LMTP over a pipe (the lmtp transport), but now it is the
385 same for both kinds of LMTP.
386
a2042e78
PH
387PH/38 Despite being documented as not happening, Exim was rewriting addresses
388 in header lines that were in fact CNAMEs. This is no longer the case.
389
4fbcfc2e
PH
390PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
391 and queue runs started by the daemon processed all messages. This has
392 been fixed so that -R and -S can now usefully be given with -q<time>.
393
aa41d2de
PH
394PH/40 Import PCRE release 6.7 (fixes some bugs).
395
af561417
PH
396PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
397
3cc66b45
PH
398PH/42 Give an error if -q is specified more than once.
399
194cc0e4
PH
400PH/43 Renamed the variables $interface_address and $interface_port as
401 $received_ip_address and $received_port, to make it clear that these
402 values apply to message reception, and not to the outgoing interface when
403 a message is delivered. (The old names remain recognized, of course.)
404
a401ddaa
PH
405PH/44 There was no timeout on the connect() call when using a Unix domain
406 socket in the ${readsocket expansion. There now is.
407
4e88a19f
PH
408PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
409 be meaningful with "accept".
410
d7d7b289
SC
411SC/01 Eximstats V1.43
412 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
413
414SC/02 Eximstats V1.44
415 Use a glob alias rather than an array ref in the generated
416 parser. This improves both readability and performance.
417
418SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
419 Collect SpamAssassin and rejection statistics.
420 Don't display local sender or destination tables unless
421 there is data to show.
422 Added average volumes into the top table text output.
423
424SC/04 Eximstats V1.46
425 Collect data on the number of addresses (recipients)
426 as well as the number of messages.
427
428SC/05 Eximstats V1.47
429 Added 'Message too big' to the list of mail rejection
430 reasons (thanks to Marco Gaiarin).
431
432SC/06 Eximstats V1.48
433 Mainlog lines which have GMT offsets and are too short to
434 have a flag are now skipped.
435
436SC/07 Eximstats V1.49 (Alain Williams)
437 Added the -emptyok flag.
438
439SC/08 Eximstats V1.50
440 Fixes for obtaining the IP address from reject messages.
441
0ea2a468
JJ
442JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
443 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
444 whitesspace changes from 4.64-PH/27
445
446JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
447 match 4.64-PH/13
448
449JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
450 are found, allow negative numbers in numeric criteria)
451
452JJ/06 exipick.20061117.2, added new $message_body_missing variable
453
454JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
455 to match changes made in 4.64-PH/43
456
8a10f5a4
PH
457PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
458
30e18802
PH
459PH/47 Put in an explicit test for a DNS lookup of an address record where the
460 "domain" is actually an IP address, and force a failure. This locks out
461 those revolvers/nameservers that support "A-for-A" lookups, in
462 contravention of the specifications.
463
55728a4f
PH
464PH/48 When a host name was looked up from an IP address, and the subsequent
465 forward lookup of the name timed out, the host name was left in
466 $sender_host_name, contrary to the specification.
d7d7b289 467
d7837193
PH
468PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
469 restricted to single-key lookups, Exim was not diagnosing an error if
470 * or *@ was used with a query-style lookup.
471
87054a31
PH
472PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
473
ea2c01d2
MH
474MH/01 local_scan ABI version incremented to 1.1. It should have been updated
475 long ago, but noone interested enough thought of it. Let's just say that
476 the "1.1" means that there are some new functions that weren't there at
477 some point in the past.
478
e4fa6968
PH
479PH/51 Error processing for expansion failure of helo_data from an smtp
480 transport during callout processing was broken.
481
56f5d9bd
PH
482PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
483 tested/used via the -bh/-bhc/-bs options.
484
922e1c28
PH
485PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
486 bug, fixed in subsequent PCRE releases).
487
21eb6e72
PH
488PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
489 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
490
a0540757
PH
491PH/55 Check for a ridiculously long file name in exim_dbmbuild.
492
944e9e9c 493
478be7b0
SC
494Exim version 4.63
495-----------------
496
497SC/01 Use a glob alias rather than an array ref in eximstats generated
498 parser. This improves both readability and performance.
499
500SC/02 Collect SpamAssassin and rejection statistics in eximstats.
501 Don't display local sender or destination tables in eximstats unless
502 there is data to show.
503 Added average volumes into the eximstats top table text output.
504
505SC/03 Collect data on the number of addresses (recipients) as well
506 as the number of messages in eximstats.
507
2b965a65
TF
508TF/01 Correct an error in the documentation for the redirect router. Exim
509 does (usually) call initgroups() when daemonizing.
478be7b0 510
45b91596
PH
511TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
512 with consistent privilege compared to when running as a daemon.
478be7b0 513
c59f5781
TF
514TF/03 Note in the spec that $authenticated_id is not set for local
515 submissions from trusted users.
516
90fc3069
TF
517TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
518 Thanks to Dean Brooks <dean@iglou.com> for the patch.
519
6083aca0
TF
520TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
521 by adding some example configuration directives to the default
522 configuration file. A little bit of work is required to uncomment the
523 directives and define how usernames and passwords are checked, but
524 there is now a framework to start from.
525
765b530f
PH
526PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
527 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
528 without this. I don't know how relevant this is to other LDAP libraries.
529
4e167a8c
PH
530PH/02 Add the verb name to the "unknown ACL verb" error.
531
4608d683
PH
532PH/03 Magnus Holmgren's patch for filter_prepend_home.
533
b8dc3e4a
PH
534PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
535
5418e93b
PH
536PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
537 directory not expanded when it should be if an expanded home directory
538 was set for the address (which is overridden by the transport).
539
b4a9bda2
PH
540PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
541 libradius.
542
45b91596
PH
543PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
544 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
545 because it is too late at that time, and has no effect.
546
5547e2c5
PH
547PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
548 security issue with \' (bugzilla #107). I could not use the
549 PQescapeStringConn() function, because it needs a PGconn value as one of
550 its arguments.
551
dbcef0ea
PH
552PH/08 When testing addresses using -bt, indicate those final addresses that
553 are duplicates that would not cause an additional delivery. At least one
554 person was confused, thinking that -bt output corresponded to deliveries.
555 (Suppressing duplicates isn't a good idea as you lose the information
556 about possibly different redirections that led to the duplicates.)
557
25257489
PH
558PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
559 systems where poll() doesn't work, in particular OS X.
560
c816d124
PH
561PH/10 Added more information to debugging output for retry time not reached.
562
a9ccd69a
PH
563PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
564 operations in malware.c.
565
75fa1910
PH
566PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
567 signatures.
568
a7d7aa58
PH
569PH/13 If write_rejectlog was set false when logging was sent to syslog with
570 syslog_duplication set false, log lines that would normally be written
571 both the the main log and to the reject log were not written to syslog at
572 all.
573
42119b09
PH
574PH/14 In the default configuration, change the use of "message" in ACL warn
575 statements to "add_header".
576
41609df5
PH
577PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
578 not followed by a command (e.g. "seen endif").
579
a5bd321b
PH
580PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
581 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
582 latter.
583
e85a7ad5 584PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
585 so that it is now:
586
e85a7ad5
PH
587 ${if or { \
588 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
589 { match{$h_precedence:}{(?i)bulk|list|junk} } \
590 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
591 }{no}{yes}}
592
e85a7ad5
PH
593 The Auto-Submitted: and various List- headers are standardised, whereas I
594 don't think Precedence: ever was.
5dff5817 595
d8fe1c03
PH
596PH/18 Refactored debugging code in route_finduser() to show more information,
597 in particular, the error code if getpwnam() issues one.
598
16282d2b
PH
599PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
600 This is apparently needed in addition to the PH/07 change above to avoid
601 any possible encoding problems.
602
35d40a98
PH
603PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
604 but not after initializing Perl.
605
034d99ab
PH
606PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
607 output them only if debugging. By default they are written stderr,
608 apparently, which is not desirable.
609
6ec97b1b
PH
610PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
611 queries.
612
e22ca4ac
JJ
613JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
614 --not options
615
616JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
617
33d73e3b
PH
618PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
619 authenticated or an ident call has been made. Suppress the default
620 values for $authenticated_id and $authenticated_sender (but permit -oMai
621 and -oMas) when testing with -bh.
622
9ecb03f3
PH
623PH/24 Re-jigged the order of the tests in the default configuration so that the
624 tests for valid domains and recipients precede the DNS black list and CSA
625 tests, on the grounds that those ones are more expensive.
626
084efe8d
PH
627PH/25 Exim was not testing for a space following SMTP commands such as EHLO
628 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
629 This bug exists in every version of Exim that I still have, right back to
630 0.12.
631
366fc9f0
PH
632PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
633 However, an attempt to turn on case-sensitivity in a regex key by
634 including (?-i) didn't work because the subject string was already
635 lowercased, and the effects were non-intuitive. It turns out that a
636 one-line patch can be used to allow (?-i) to work as expected.
637
c59f5781 638
c887c79e
TF
639Exim version 4.62
640-----------------
641
642TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
643 other effects) broke the use of negated acl sub-conditions.
644
1cce3af8
PH
645PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
646 patch).
647
afb3eaaf
PH
648PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
649 "Deny" causes Exim to reject the incoming connection with a 554 error.
650 Unfortunately, if there is a major crisis, such as a disk failure,
651 tcp-wrappers gives "deny", whereas what one would like would be some
652 kind of temporary error. A kludge has been added to help with this.
653 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
654 554 error is used if errno is still zero or contains ENOENT (which occurs
655 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
656 451 error is used.
657
e173618b
PH
658PH/03 Add -lutil to the default FreeBSD LIBS setting.
659
dd16e114
PH
660PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
661 errors. Otherwise a message that provokes a temporary error (when other
662 messages do not) can cause a whole host to time out.
663
f7fd3850
PH
664PH/05 Batch deliveries by appendfile and pipe transports did not work when the
665 addresses were routed directly to files or pipes from a redirect router.
666 File deliveries just didn't batch; pipe deliveries might have suffered
667 odd errors.
668
d87df92c
PH
669PH/06 A failure to get a lock for a hints database would erroneously always say
670 "Failed to get write lock", even when it was really a read lock.
671
7e9f683d
PH
672PH/07 The appendfile transport was creating MBX lock files with a fixed mode
673 of 0600. This has been changed to use the value of the lockfile_mode
674 option (which defaults to 0600).
675
bfad5236
PH
676PH/08 Applied small patch from the Sieve maintainer.
677
01c490df
PH
678PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
679 folder from quota calculations, a direct delivery into this folder messed
680 up the contents of the maildirsize file. This was because the regex was
681 used only to exclude .Trash (or whatever) when the size of the mailbox
682 was calculated. There was no check that a delivery was happening into an
683 excluded directory. This bug has been fixed by ignoring all quota
684 processing for deliveries into excluded directories.
685
d6629cdc
PH
686PH/10 Added the maildirfolder_create_regex option to appendfile.
687
1cce3af8 688
214e2000
PH
689Exim version 4.61
690-----------------
691
692PH/01 The code for finding all the local interface addresses on a FreeBSD
693 system running IPv6 was broken. This may well have applied to all BSD
694 systems, as well as to others that have similar system calls. The broken
695 code found IPv4 interfaces correctly, but gave incorrect values for the
696 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
697 that it would not match correctly against @[] and not recognize the IPv6
698 addresses as local.
699
f9daeae0
PH
700PH/02 The ipliteral router was not recognizing addresses of the form user@
701 [ipv6:....] because it didn't know about the "ipv6:" prefix.
702
7e66e54d
PH
703PH/03 Added disable_ipv6.
704
c8ea1597
PH
705PH/04 Changed $reply_address to use the raw form of the headers instead of the
706 decoded form, because it is most often used to construct To: headers
707 lines in autoreplies, and the decoded form may well be syntactically
708 invalid. However, $reply_address has leading white space removed, and all
709 newlines turned into spaces so that the autoreply transport does not
710 grumble.
711
911f6fde
PH
712PH/05 If group was specified without a user on a router, and no group or user
713 was specified on a transport, the group from the router was ignored.
714
47ca6d6c
PH
715PH/06 Increased the number of ACL variables to 20 of each type, and arranged
716 for visible compile-time settings that can be used to change these
717 numbers, for those that want even more. Backwards compatibility with old
718 spool files has been maintained. However, going back to a previous Exim
719 release will lost any variables that are in spool files.
720
ed0e9820
PH
721PH/07 Two small changes when running in the test harness: increase delay when
722 passing a TCP/IP connection to a new process, in case the original
723 process has to generate a bounce, and remove special handling of
724 127.0.0.2 (sic), which is no longer necessary.
725
eff37e47
PH
726PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
727 be the same on different OS.
728
1921d2ea
PH
729PH/09 Moved a debug statement in filter processing to avoid a race problem when
730 testing.
731
b3f69ca8
JJ
732JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
733 whether --show-vars was specified or not
734
735JJ/02 exipick: Added support for new ACL variable spool format introduced
736 in 4.61-PH/06
737
424a1c63
PH
738PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
739 syntactically invalid From: or Reply-to: line, and a filter used this to
740 generate an autoreply, and therefore failed to obtain an address for the
741 autoreply, Exim could try to deliver to a non-existent relative file
742 name, causing unrelated and misleading errors. What now happens is that
743 it logs this as a hard delivery error, but does not attempt to create a
744 bounce message.
745
7a100415
PH
746PH/11 The exinext utility has a -C option for testing purposes, but although
747 the given file was scanned by exinext itself; it wasn't being passed on
748 when Exim was called.
749
19b9dc85
PH
750PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
751 an end-of-file indication when reading a command response.
752
309bd837
PH
753PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
754 compiled. In many other places in Exim, IPv6 addresses are always
755 recognized, so I have changed this. It also means that IPv4 domain
756 literals of the form [IPV4:n.n.n.n] are now always recognized.
757
59e82a2a
PH
758PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
759 used if the router is not running as root, for example, when verifying at
760 ACL time, or when using -bh. The debugging output from this situation was
761 non-existent - all you got was a failure to exec. I have made two
762 changes:
763
764 (a) Failures to set uid/gid, the current directory, or a process leader
765 in a subprocess such as that created by queryprogram now generate
766 suitable debugging ouput when -d is set.
767
768 (b) The queryprogram router detects when it is not running as root,
769 outputs suitable debugging information if -d is set, and then runs
770 the subprocess without attempting to change uid/gid.
771
9edc04ce
PH
772PH/15 Minor change to Makefile for building test_host (undocumented testing
773 feature).
774
1349e1e5
PH
775PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
776 additional section of a DNS packet that returns MX or SRV records.
777 Instead, it always explicitly searches for A/AAAA records. This avoids
778 major problems that occur when a DNS server includes only records of one
779 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
780 fixed another bug: if SRV records were looked up and the corresponding
781 address records were *not* found in the additional section, the port
782 values from the SRV records were lost.
783
ea49d0e1
PH
784PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
785 using the correct key (the original address) when searching the retry
786 rules in order to find which one to use for generating the retry hint.
787
064a94c9
PH
788PH/18 If quota_warn_message contains a From: header, Exim now refrains from
789 adding the default one. Similarly, if it contains a Reply-To: header, the
790 errors_reply_to option, if set, is not used.
791
727071f8
PH
792PH/19 When calculating a retry time, Exim used to measure the "time since
793 failure" by looking at the "first failed" field in the retry record. Now
794 it does not use this if it is later than than the arrival time of the
795 message. Instead it uses the arrival time. This makes for better
796 behaviour in cases where some deliveries succeed, thus re-setting the
797 "first failed" field. An example is a quota failure for a huge message
798 when small messages continue to be delivered. Without this change, the
799 "time since failure" will always be short, possible causing more frequent
800 delivery attempts for the huge message than are intended.
dd16e114 801 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 802
f78eb7c6
PH
803PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
804 $1, $2, $3) because the numerical variables can be reset during some
805 expansion items (e.g. "match"), thereby losing the authentication data.
806
21c28500
PH
807PH/21 Make -bV show the size of off_t variables so that the test suite can
808 decide whether to run tests for quotas > 2G.
809
810PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
811 mailbox_size, and mailbox_filecount in the appendfile transport. If a
812 filecount value is greater than 2G or if a quota value is greater than 2G
813 on a system where the size of off_t is not greater than 4, a panic error
814 is given.
815
1688f43b
PH
816PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
817 never match. The debug and -bh output now contains an explicit error
818 message indicating a malformed IPv4 address or mask.
819
820PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
821 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
822 PH/23 above applies.
823
9675b384
PH
824PH/25 Do not write to syslog when running in the test harness. The only
825 occasion when this arises is a failure to open the main or panic logs
826 (for which there is an explicit test).
827
6a3f1455
PH
828PH/26 Added the /no_tell option to "control=freeze".
829
dac79d3e
PH
830PH/27 If a host name lookup failed very early in a connection, for example, if
831 the IP address matched host_lookup and the reverse lookup yielded a name
832 that did not have a forward lookup, an error message of the form "no IP
833 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
834 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 835
5977a0b3
PH
836PH/28 An enabling patch from MH: add new function child_open_exim2() which
837 allows the sender and the authenticated sender to be set when
838 submitting a message from within Exim. Since child_open_exim() is
839 documented for local_scan(), the new function should be too.
840
c91535f3
PH
841PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
842 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
843 results in an empty string is now treated as unset.
844
0d46a8c8
PH
845PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
846
278c6e6c
PH
847PH/31 Added sender_verify_fail logging option.
848
2cbb4081
PH
849PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
850 needed by RFC 822 but not by RFC 2822 was commented out. I have now
851 tidied the source and removed it altogether.
852
3eef829e
PH
853PH/33 When a queue run was abandoned because the load average was too high, a
854 log line was always written; now it is written only if the queue_run log
855 selector is set. In addition, the log line for abandonment now contains
856 information about the queue run such as the pid. This is always present
857 in "start" and "stop" lines but was omitted from the "abandon" line.
858
1ab95fa6
PH
859PH/34 Omit spaces between a header name and the colon in the error message that
860 is given when verify = headers_syntax fails (if there are lots of them,
861 the message gets confusing).
862
230205fc
PH
863PH/35 Change the default for dns_check_names_pattern to allow slashes within
864 names, as there are now some PTR records that contain slashes. This check
865 is only to protect against broken name servers that fall over on strange
866 characters, so the fact that it applies to all lookups doesn't matter.
867
75e0e026
PH
868PH/36 Now that the new test suite is complete, we can remove some of the
869 special code in Exim that was needed for the old test suite. For example,
870 sorting DNS records because real resolvers return them in an arbitrary
871 order. The new test suite's fake resolver always returns records in the
872 same order.
873
874PH/37 When running in the test harness, use -odi for submitted messages (e.g.
875 bounces) except when queue_only is set, to avoid logging races between
876 the different processes.
877
145396a6
PH
878PH/38 Panic-die if .include specifies a non-absolute path.
879
3cd34f13
PH
880PH/39 A tweak to the "H" retry rule from its user.
881
11121d3d
JJ
882JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
883 a label. They prevented compilation on older perls.
884
885JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
886 a warning to be raised on newish perls.
887
888JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
889 on queue. Changes to match documented behaviour of showing count of
890 messages matching specified criteria.
891
8def5aaf
PH
892PH/40 Changed the default ident timeout from 30s to 5s.
893
929ba01c
PH
894PH/41 Added support for the use of login_cap features, on those BSD systems
895 that have them, for controlling the resources used by pipe deliveries.
896
2632889e
PH
897PH/42 The content-scanning code uses fopen() to create files in which to put
898 message data. Previously it was not paying any attention to the mode of
899 the files. Exim runs with umask(0) because the rest of the code creates
900 files with open(), and sets the required mode explicitly. Thus, these
901 files were ending up world-writeable. This was not a big issue, because,
902 being within the spool directory, they were not world-accessible. I have
903 created a function called modefopen, which takes an additional mode
904 argument. It sets umask(777), creates the file, chmods it to the required
905 mode, then resets the umask. All the relevant calls to fopen() in the
906 content scanning code have been changed to use this function.
907
944a9c55
PH
908PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
909 to 24 hours. This avoids potential overflow problems when processing G
910 and H retry rules. I suspect nobody ever tinkers with this value.
911
4a23603b
PH
912PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
913
4730f942
PH
914PH/45 When the plaintext authenticator is running as a client, the server's
915 challenges are checked to ensure they are valid base64 strings. By
916 default, the authentication attempt is cancelled if an invalid string is
917 received. Setting client_ignore_invalid_base64 true ignores these errors.
918 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
919 they are received. Thus, the responses can be made to depend on the
920 challenges. If an invalid string is ignored, an empty string is placed in
921 the variable.
922
30dba1e6
PH
923PH/46 Messages that are created by the autoreply transport now contains a
924 References: header, in accordance with RFCs 2822 and 3834.
925
382afc6b
PH
926PH/47 Added authenticated_sender_force to the smtp transport.
927
a86229cf
PH
928PH/48 The ${prvs expansion was broken on systems where time_t was long long.
929
50c99ba6
PH
930PH/49 Installed latest patch from the Sieve maintainer.
931
d35e429d
PH
932PH/50 When an Exim quota was set without a file count quota, and mailbox_size
933 was also set, the appendfile transport was unnecessarily scanning a
934 directory of message files (e.g. for maildir delivery) to find the count
935 of files (along with the size), even though it did not need this
936 information. It now does the scan only if it needs to find either the
937 size of the count of files.
938
f90d018c
PH
939PH/51 Added ${time_eval: to convert Exim time strings into seconds.
940
75def545
PH
941PH/52 Two bugs concerned with error handling when the smtp transport is
942 used in LMTP mode:
943
944 (i) Exim was not creating retry information for temporary errors given
945 for individual recipients after the DATA command when the smtp transport
946 was used in LMTP mode. This meant that they could be retried too
947 frequently, and not timed out correctly.
948
949 (ii) Exim was setting the flag that allows error details to be returned
950 for LMTP errors on RCPT commands, but not for LMTP errors for individual
951 recipients that were returned after the DATA command.
952
953PH/53 This is related to PH/52, but is more general: for any failing address,
954 when detailed error information was permitted to be returned to the
955 sender, but the error was temporary, then after the final timeout, only
956 "retry timeout exceeded" was returned. Now it returns the full error as
957 well as "retry timeout exceeded".
958
c46782ef
PH
959PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
960 do this, and (what is worse) MTAs that accept it.
961
71fafd95
PH
962PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
963 will now be deprecated.
964
2c5db4fd
PH
965PH/56 New os.c-cygwin from the Cygwin maintainer.
966
9cf6b11a
JJ
967JJ/06 exipick: added --unsorted option to allow unsorted output in all output
968 formats (previously only available in exim formats via -bpr, -bpru,
969 and -bpra. Now also available in native and exiqgrep formats)
970
971JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
972 with very large, slow to parse queues
973
974JJ/08 exipick: added ! as generic prefix to negate any criteria format
975
976JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
977
898d150f
PH
978PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
979 responses to authentication challenges, though it was showing the
980 challenges; (ii) I've removed the CR characters from the debug output for
981 SMTP output lines.
982
46218253
PH
983PH/58 Allow for the insertion of a newline as well as a space when a string
984 is turned into more than one encoded-word during RFC 2047 encoding. The
985 Sieve code now uses this.
986
e97957bc
PH
987PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
988 data_4xx, lost_connection, tls_required.
989
81e509d7
PH
990PH/60 When a VRFY deferred or FAILED, the log message rather than the user
991 message was being sent as an SMTP response.
992
3d240ff7
PH
993PH/61 Add -l and -k options to exicyclog.
994
b37c4101
PH
995PH/62 When verifying, if an address was redirected to one new address, so that
996 verification continued, and the new address failed or deferred after
997 having set something in $address_data, the value of $address_data was not
998 passed back to the ACL. This was different to the case when no
999 redirection occurred. The value is now passed back in both cases.
1000
79378e0f
PH
1001PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1002 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1003 use login_cap.h, so on its own it isn't the distinguishing feature. The
1004 new name refers directly to the setclassresources() function.
1005
e49c7bb4
PH
1006PH/65 Added configuration files for NetBSD3.
1007
d114ec46
PH
1008PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1009
f3d7df6c
PH
1010PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1011 is preferred over IPv4.
1012
715ab376
PH
1013PH/68 The bounce_return_message and bounce_return_body options were not being
1014 honoured for bounces generated during the reception of non-SMTP messages.
1015 In particular, this applied to messages rejected by the ACL. This bug has
1016 been fixed. However, if bounce_return_message is true and bounce_return_
1017 body is false, the headers that are returned for a non-SMTP message
1018 include only those that have been read before the error was detected.
1019 (In the case of an ACL rejection, they have all been read.)
1020
6b31b150
PH
1021PH/69 The HTML version of the specification is now built in a directory called
1022 spec_html instead of spec.html, because the latter looks like a path with
1023 a MIME-type, and this confuses some software.
1024
1025PH/70 Catch two compiler warnings in sieve.c.
1026
d515a917
PH
1027PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1028 function verify_get_ident() calls ip_connect() to connect a socket, but
1029 if the "connect()" function timed out, ip_connect() used to close the
1030 socket. However, verify_get_ident() also closes the socket later, and in
1031 between Exim writes to the log, which may get opened at this point. When
1032 the socket was closed in ip_connect(), the log could get the same file
1033 descriptor number as the socket. This naturally causes chaos. The fix is
1034 not to close the socket in ip_connect(); the socket should be closed by
1035 the function that creates it. There was only one place in the code where
1036 this was missing, in the iplookup router, which I don't think anybody now
1037 uses, but I've fixed it anyway.
1038
9b8fadde
PH
1039PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1040 well as to direct DNS lookups. Otherwise the handling of names in host
1041 lists is inconsistent and therefore confusing.
1042
214e2000 1043
5de37277
PH
1044Exim version 4.60
1045-----------------
1046
cc38ddbf
PH
1047PH/01 Two changes to the default runtime configuration:
1048
1049 (1) Move the checks for relay_from_hosts and authenticated clients from
1050 after to before the (commented out) DNS black list checks.
1051
1052 (2) Add control=submission to the relay_from_hosts and authenticated
1053 clients checks, on the grounds that messages accepted by these
1054 statements are most likely to be submissions.
5de37277 1055
72fdd6ae
PH
1056PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1057
1058 (1) Generate an error if the third argument for the ${prvs expansion is
1059 not a single digit.
1060
1061 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1062 string.
1063
1064 (3) Reset the variables that are obtained from the first argument of
1065 ${prvscheck and used in the second argument before leaving the code,
1066 because their memory is reclaimed, so using them afterwards may do
1067 silly things.
1068
1069 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1070 one (it's much easier than Tom thought :-).
1071
1072 (5) Because of (4), we can now allow for the use of $prvscheck_result
1073 inside the third argument.
cb9328de 1074
cb741023
PH
1075PH/03 For some reason, the default setting of PATH when running a command from
1076 a pipe transport was just "/usr/bin". I have changed it to
1077 "/bin:/usr/bin".
1078
f174f16e
PH
1079PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1080 anything to be listed in the output from -bV.
b2f5a032 1081
c25242d7
PH
1082PH/05 When a filter generated an autoreply, the entire To: header line was
1083 quoted in the delivery log line, like this:
1084
1085 => >A.N.Other <ano@some.domain> <original@ddress> ...
1086
1087 This has been changed so that it extracts the operative address. There
1088 may be more than one such address. If so, they are comma-separated, like
1089 this:
1090
1091 => >ano@some.domain,ona@other.domain <original@ddress> ...
1092
82c19f95
PH
1093PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1094 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1095 not being looked up in the rDNS to get a host name, Exim was showing the
1096 IP address twice in Received: lines, even though the IP addresses were
1097 identical. For example:
1098
1099 Received: from [1.2.3.4] (helo=[1.2.3.4])
1100
1101 However, if the real host name was known, it was omitting the HELO data
1102 if it matched the actual IP address. This has been tidied up so that it
1103 doesn't show the same IP address twice.
1104
d7ffbc12
PH
1105PH/07 When both +timestamp and +memory debugging was on, the value given by
1106 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1107 called by the debug printing, thereby overwriting the timestamp buffer.
1108 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1109
9f526266
PH
1110PH/08 When the original message was included in an autoreply transport, it
1111 always said "this is a copy of the message, including all the headers",
1112 even if body_only or headers_only was set. It now gives an appropriate
1113 message.
1114
87fcc8b9
PH
1115PH/09 Applied a patch from the Sieve maintainer which:
1116
1117 o fixes some comments
1118 o adds the (disabled) notify extension core
1119 o adds some debug output for the result of if/elsif tests
1120 o points to the current vacation draft in the documentation
1121 and documents the missing references header update
1122
1123 and most important:
1124
1125 o fixes a bug in processing the envelope test (when testing
1126 multiple envelope elements, the last element determinted the
1127 result)
1128
456682f5
PH
1129PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1130 Electronic Mail") by including:
1131
1132 Auto-submitted: auto-generated
1133
1134 in the messages that it generates (bounce messages and others, such as
1135 warnings). In the case of bounce messages for non-SMTP mesages, there was
1136 also a typo: it was using "Auto_submitted" (underscore instead of
1137 hyphen). Since every message generated by Exim is necessarily in response
1138 to another message, thes have all been changed to:
1139
1140 Auto-Submitted: auto-replied
1141
1142 in accordance with these statements in the RFC:
1143
1144 The auto-replied keyword:
1145
1146 - SHOULD be used on messages sent in direct response to another
1147 message by an automatic process,
1148
1149 - MUST NOT be used on manually-generated messages,
1150
1151 - MAY be used on Delivery Status Notifications (DSNs) and Message
1152 Disposition Notifications (MDNs),
1153
1154 - MUST NOT be used on messages generated by automatic or periodic
1155 processes, except for messages which are automatic responses to
1156 other messages.
1157
3e46c1aa
PH
1158PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1159 to the default Received: header definition.
456682f5 1160
49826d12
PH
1161PH/12 Added log selector acl_warn_skipped (default on).
1162
eba0c039
PH
1163PH/13 After a successful wildlsearch lookup, discard the values of numeric
1164 variables because (a) they are in the wrong storage pool and (b) even if
1165 they were copied, it wouldn't work properly because of the caching.
1166
a0d6ba8a
PH
1167PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1168 checking when decoding. Apparently there are clients that generate
1169 overlong encoded strings. Why am I not surprised?
1170
f0917727
PH
1171PH/15 If the first argument of "${if match_address" was not empty, but did not
1172 contain an "@" character, Exim crashed. Now it writes a panic log message
1173 and treats the condition as false.
1174
096fee00
PH
1175PH/16 In autoreply, treat an empty string for "once" the same as unset.
1176
024bd3c2
PH
1177PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1178 extension "envelope-auth". The code is finished and in agreement with
1179 other implementations, but there is no documentation so far and in fact,
1180 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1181 not changing the active code.
1182
1183 Print executed "if" and "elsif" statements when debugging is used. This
1184 helps a great deal to understand what a filter does.
1185
1186 Document more things not specified clearly in RFC3028. I had all this
1187 sorted out, when out of a sudden new issues came to my mind. Oops."
1188
df199fec
PH
1189PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1190 (Bugzilla #53).
1191
d27f1df3
PH
1192PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1193 canonical form (as documented). However, after a host name lookup from
1194 the IP address, check_host() was doing a simple string comparison with
1195 addresses acquired from the DNS when checking that the found name did
1196 have the original IP as one of its addresses. Since any found IPv6
1197 addresses are likely to be in abbreviated form, the comparison could
1198 fail. Luckily, there already exists a function for doing the comparison
1199 by converting both addresses to binary, so now that is used instead of
1200 the text comparison.
1201
96776534
PH
1202PH/20 There was another similar case to PH/19, when a complete host name was
1203 given in a host list; looking up its IP address could give an abbreviated
1204 form, whereas the current host's name might or might not be abbreviated.
1205 The same fix has been applied.
1206
5de37277 1207
9a799bc0
PH
1208Exim version 4.54
1209-----------------
1210
1211PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1212 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1213 It now does.
1214
99a4b039
PH
1215PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1216 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1217
1218PH/03 Typo: missing ".o" in src/pcre/Makefile.
1219
4b233853
PH
1220PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1221 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1222 Also, for "Auto-Submitted", treat anything other than "no" as
1223 non-personal, in accordance with RFC 3834. (Previously it treated
1224 anything starting "auto-" as non-personal.)
1225
8857ccfd
PH
1226TF/01 The control=submission/name=... option had a problem with syntax
1227 errors if the name included a slash character. The /name= option
1228 now slurps the rest of the string, so it can include any characters
1229 but it must come last in the list of options (after /sender_retain
1230 or /domain=).
1231
433a2980
PH
1232PH/05 Some modifications to the interface to the fake nameserver for the new
1233 testing suite.
1234
3e46c1aa 1235
9a799bc0 1236
e3a311ba
TK
1237Exim version 4.53
1238-----------------
1239
1240TK/01 Added the "success_on_redirect" address verification option. See
1241 NewStuff for rationale and an example.
1242
13b685f9
PH
1243PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1244
395ff96d
PH
1245PH/02 Patch to exigrep to allow it to work on syslog lines.
1246
5b68f6e4
PH
1247PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1248 fread() to skip over the body file's header line, because in Cygwin the
1249 header line is locked and is inaccessible.
1250
1ab52c69
PH
1251PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1252 co-exist for some time) to make it clear that it is the Exim ID that is
1253 referenced, not the Message-ID: header line.
1254
b07e6aa3
PH
1255PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1256 string_format() function, because snprintf() does not exist on all
1257 operating systems.
1258
254e032f
PH
1259PH/06 The use of forbid_filter_existstest now also locks out the use of the
1260 ${stat: expansion item.
1261
3af76a81
PH
1262PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1263 protocol synchronization error", to keep the pedants happy.
1264
2548ba04
PH
1265PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1266 well as for IRIX systems, when gcc is being used. See the host.c source
1267 file for comments.
1268
b6c6011d
PH
1269PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1270
cf39cf57
PH
1271PH/10 Named domain lists were not working if used in a queue_smtp_domains
1272 setting.
1273
f1513293
PH
1274PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1275 transport and to the smtp transport in LMTP mode.
1276
727549a4
PH
1277TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1278
af46795e
PH
1279PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1280 run a filter in a subprocess. This could lead to confusion in subsequent
1281 lookups in the parent process. There should also be a search_tidyup() at
1282 the end of the subprocess.
1283
d7b47fd0
PH
1284PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1285 only if the host matched helo_try_verify_hosts, which caused the
1286 verification to occur when the EHLO/HELO command was issued. The ACL just
1287 tested the remembered result. Now, if a previous verification attempt has
1288 not happened, "verify = helo" does it there and then.
1289
ee744174
JJ
1290JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1291
b582ab87
PH
1292TK/03 Fix log output including CR from clamd.
1293
41a13e0a
PH
1294PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1295 exist provoked a memory error which could cause a segfault.
1296
f625cc5a
PH
1297PH/15 Installed PCRE 6.2
1298
1299PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1300
21f7af35
PH
1301PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1302 of the problem. Specifically, suggested +O2 rather than +O1 for the
1303 HP-UX compiler.
1304
31480e42
PH
1305PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1306
2d280592
PH
1307PH/20 If a delivery was routed to a non-standard port by means of an SRV
1308 record, the port was not correctly logged when the outgoing_port log
1309 selector was set (it logged the transort's default port).
1310
7cd1141b
PH
1311PH/21 Added support for host-specific ports to manualroute, queryprogram,
1312 fallback_hosts, and "hosts" in the smtp transport.
1313
1314PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1315 host errors such as "Connection refused".
1316
750af86e
PH
1317PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1318 authentication with radiusclient 0.4.9:
1319
1320 - Error returned from rc_read_config was caught wrongly
1321 - Username/password not passed on to radius server due to wrong length.
1322
1323 The presumption is that some radiusclient API changes for 4.51/PH/17
1324 were not taken care of correctly. The code is still untested by me (my
1325 Linux distribution still has 0.3.2 of radiusclient), but it was
1326 contributed by a Radius user.
1327
1328PH/24 When doing a callout, the value of $domain wasn't set correctly when
1329 expanding the "port" option of the smtp transport.
1330
4304270b
TK
1331TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1332 while reading a MIME header. Thanks to Tom Hughes for a patch.
1333
750af86e
PH
1334PH/24 Include config.h inside local_scan.h so that configuration settings are
1335 available.
1336
64ffc24f
PH
1337PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1338 that in an ACL for RCPT (for example), you can examine exactly what was
1339 received.
1340
5dd9625b
PH
1341PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1342 commands, but it was not correctly comparing the address with the actual
1343 client host address. Thus, it would show the EHLO address in Received:
1344 header lines when this was not necessary.
1345
5591031b
PH
1346PH/27 Added the % operator to ${eval:}.
1347
ba18e66a
PH
1348PH/28 Exim tries to create and chdir to its spool directory when it starts;
1349 it should be ignoring failures (because with -C, for example, it has lost
1350 privilege). It wasn't ignoring creation failures other than "already
1351 exists".
1352
9cec981f
PH
1353PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1354 -bV or -d is used.
1355
aa2b5c79
PH
1356PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1357 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1358 too many continuations, the temporary file was not being removed, and the
1359 return code was incorrect.
aa2b5c79 1360
48a53b7f
PH
1361PH/31 Missing "BOOL" in function definition in filtertest.c.
1362
1c59d63b
PH
1363PH/32 Applied Sieve patches from the maintainer.
1364
671012da
TK
1365TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1366
1509d3a8
PH
1367PH/33 Added "verify = not_blind".
1368
1369PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1370 Local/Makefile (with some defaults set). These are used in built scripts
1371 such as exicyclog, but they have never been used in the exim_install
1372 script (though there are many overriding facilities there). I have
1373 arranged that the exim_install script now takes note of these two
1374 settings.
1375
1376PH/35 Installed configuration files for Dragonfly.
1377
2fe1a124
PH
1378PH/36 When a locally submitted message by a trusted user did not contain a
1379 From: header, and the sender address was obtained from -f or from an SMTP
1380 MAIL command, and the trusted user did not use -F to supply a sender
1381 name, $originator_name was incorrectly used when constructing a From:
1382 header. Furthermore, $originator_name was used for submission mode
1383 messages from external hosts without From: headers in a similar way,
1384 which is clearly wrong.
1385
8800895a
PH
1386PH/37 Added control=suppress_local_fixups.
1387
ccfdb010
PH
1388PH/38 When log_selector = +received_sender was set, and the addition of the
1389 sender made the log line's construction buffer exactly full, or one byte
1390 less than full, an overflow happened when the terminating "\n" was
1391 subsequently added.
1392
1130bfb0
PH
1393PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1394 when the result of a list match is failure because a DNS lookup failed.
1395
ebcb507f
PH
1396PH/40 RM_COMMAND is now used in the building process.
1397
c35e155c
PH
1398PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1399 the "build-* directories that it finds.
1400
95d1f782
PH
1401PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1402 address in a domain literal was a prefix of an interface address.
1403
fd6de02e
PH
1404PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1405 when verifying a sender address, unless rewrite_headers is false.
1406
58de37c5
PH
1407PH/44 Wrote a long comment about why errors_to addresses are verified as
1408 recipients, not senders.
1409
261cf466
TF
1410TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1411 the ratelimit ACL was added.
1412
3ee512ff
PH
1413PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1414
e08c430f
PH
1415PH/46 Added extra information about PostgreSQL errors to the error string.
1416
bef5a11f
PH
1417PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1418 avoiding the need to install special zones in a real server. This is
1419 backwards compatible; if it can't find the fake resolver, it drops back.
1420 Thus, both old and new test suites can be run.
1421
7546de58
TF
1422TF/02 Added util/ratelimit.pl
1423
e5d5a95f
TF
1424TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1425 clock is set back in time.
1426
2e88a017
TF
1427TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1428 Candler <B.Candler@pobox.com>.
1429
a5f65aa4
TF
1430TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1431 OK for addresses that are the result of redirections.
1432
e7726cbf
PH
1433PH/48 A number of further additions for the benefit of the new test suite,
1434 including a fake gethostbyname() that interfaces to the fake DNS resolver
1435 (see PH/47 above).
1436
a7fdad5b
TF
1437TF/06 The fix for widen_domains has also been applied to qualify_single and
1438 search_parents which are the other dnslookup options that can cause
1439 header rewrites.
1440
6af56900
PH
1441PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1442 type ("H").
1443
0925ede6
PH
1444PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1445
66afa403
TF
1446TF/07 Exim produced the error message "an SRV record indicated no SMTP
1447 service" if it encountered an MX record with an empty target hostname.
1448 The message is now "an MX or SRV record indicated no SMTP service".
1449
0154e85a
TF
1450TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1451 if the DNS of the sending site is misconfigured. This is quite a
1452 common situation. This change restores the behaviour of treating a
1453 helo verification defer as a failure.
1454
16f12c76
PH
1455PH/51 If self=fail was set on a router, the bounce message did not include the
1456 actual error message.
1457
bbe902f0 1458
e5a9dba6
PH
1459Exim version 4.52
1460-----------------
1461
1462TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1463
22c3b60b
PH
1464PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1465 command itself ended in error, the underlying message about the transport
1466 filter timeout was being overwritten with the pipe command error. Now the
1467 underlying error message should be appended to the second error message.
1468
06a9b4b5
PH
1469TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1470
c1ac6996
PH
1471PH/02 Reduce the amount of output that "make" produces by default. Full output
1472 can still be requested.
1473
9c7a242c
PH
1474PH/03 The warning log line about a condition test deferring for a "warn" verb
1475 was being output only once per connection, rather than after each
1476 occurrence (because it was using the same function as for successful
1477 "warn" verbs). This seems wrong, so I have changed it.
1478
87ba3f5f
PH
1479TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1480 it should not have, which might have caused a crash in the right
1481 circumstances, but probably never did.
1482
1483PH/04 Installed a modified version of Tony Finch's patch to make submission
1484 mode fix the return path as well as the Sender: header line, and to
1485 add a /name= option so that you can make the user's friendly name appear
1486 in the header line.
1487
29aba418
TF
1488TF/03 Added the control = fakedefer ACL modifier.
1489
fe0dab11
TF
1490TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1491 Mark Lowes for thorough testing.
870f6ba8 1492
11d337a4
TK
1493TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1494
1495TK/03 Merged latest SRS patch from Miles Wilton.
1496
415c8f3b
PH
1497PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1498 with the definition in sysexits.h (which is #included earlier).
1499 Fortunately, Exim does not actually use EX_OK. The code used to try to
1500 preserve the sysexits.h value, by assumimg that macro definitions were
1501 scanned for macro replacements. I have been disabused of this notion,
1502 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1503
958541e9
PH
1504PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1505 in the smtp transport. When a block could not be written in a single
1506 write() function, the timeout was being re-applied to each part-write.
1507 This seems wrong - if the receiver was accepting one byte at a time it
1508 would take for ever. The timeout is now adjusted when this happens. It
1509 doesn't have to be particularly precise.
1510
c206415f
TK
1511TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1512 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1513
2a4be8f9
PH
1514PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1515 without a domain if the check to <postmaster@domain> fails.
1516
1cba11c5
SC
1517SC/01 Eximstats: added -xls and the ability to specify output files
1518 (patch written by Frank Heydlauf).
1519
1520SC/02 Eximstats: use FileHandles for outputing results.
1521
1522SC/03 Eximstats: allow any combination of xls, txt, and html output.
1523
1524SC/04 Eximstats: fixed display of large numbers with -nvr option
1525
1526SC/05 Eximstats: fixed merging of reports with empty tables.
1527
1528SC/06 Eximstats: added the -include_original_destination flag
1529
1530SC/07 Eximstats: removed tabs and trailing whitespace.
1531
1005d00e
TK
1532TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1533
1534TK/06 MBOX spool code: Add real "From " MBOX separator line
1535 so the .eml file is really in mbox format (even though
1536 most programs do not really care). Patch from Alex Miller.
1537
1538TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1539 The latter is generated from $received_to and is only set if the
1540 message has one envelope recipient. SA can use these headers,
1541 obviously out-of-the-box. Patch from Alex Miller.
1542
9b4768fa
PH
1543PH/08 The ${def test on a variable was returning false if the variable's
1544 value was "0", contrary to what the specification has always said!
1545 The result should be true unless the variable is empty.
1546
1547PH/09 The syntax error of a character other than { following "${if
1548 def:variable_name" (after optional whitespace) was not being diagnosed.
1549 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1550 accidental colon was present, for example, could give incorrect results.
1551
0d7eb84a
PH
1552PH/10 Tidied the code in a number of places where the st_size field of a stat()
1553 result is used (not including appendfile, where other changes are about
1554 to be made).
1555
1556PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1557 This involved changing a lot of size variables from int to off_t. It
1558 should work with maildirs and everything.
1559
40727bee
TK
1560TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1561 spamd dying while we are connected to it.
1562
554d2369
TF
1563TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1564 <jgh@wizmail.org>
1565
1f922db1
PH
1566PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1567 function for BDB 4.3.
1568
ef213c3b
PH
1569PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1570
8ac170f3
PH
1571PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1572 the sources for PCRE have been re-arranged and more files are now
1573 involved.
1574
b1c749bb
PH
1575PH/15 The code I had for printing potentially long long variables in PH/11
1576 above was not the best (it lost precision). The length of off_t variables
1577 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1578 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1579 to be "long long int" or "long int". This is needed for the internal
1580 formatting function string_vformat().
b1c749bb 1581
4aac9b49
PH
1582PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1583 the configuration file to be ":syslog", then the script "guesses" where
1584 the logs files are, rather than using the compiled in default. In our
1585 case the guess is not the same as the compiled default, so the script
1586 suddenly stopped working when I started to use syslog. The patch checks
1587 to see if log_file_path is "". If so, it attempts to read it from exim
1588 with no configuration file to get the compiled in version, before it
1589 falls back to the previous guessing code."
1590
294520c8
TK
1591TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1592 implementing BATV in an Exim configuration. See NewStuff for the gory
1593 details.
1594
5bd022fe
PH
1595PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1596 Makefile that are specific to HP-UX.
1597
90e9ce59
PH
1598PH/18 If the "use_postmaster" option was set for a recipient callout together
1599 with the "random" option, the postmaster address was used as the MAIL
1600 FROM address for the random test, but not for the subsequent recipient
1601 test. It is now used for both.
1602
5ea81592
PH
1603PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1604 patch removes a few documentation additions to RFC 3028, because the
1605 latest draft now contains them. It adds the new en;ascii-case comparator
1606 and a new error check for 8bit text in MIME parts. Comparator and
1607 require names are now matched exactly. I enabled the subaddress
1608 extension, but it is not well tested yet (read: it works for me)."
1609
c6c2dc1d
PH
1610PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1611 rework some of the code of TK/09 above to avoid the hardwired use of
1612 "%lld" and "long long". Replaced the call to snprintf() with a call to
1613 string_vformat().
1614
fffffe4c
PH
1615PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1616 records point to non-existent hosts", "retry timeout exceeded", and
1617 "retry time not reached for any host after a long failure period".
ca02eafb 1618
9a26b6b2
PH
1619PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1620 experimental DomainKeys support:
1621
1622 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1623 (2) On an error such as an illegally used "control", the wrong name for
1624 the control was given.
1625
1626 These problems did NOT occur unless DomainKeys support was compiled.
1627
4aee0225
PH
1628PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1629
32d668a5
PH
1630PH/24 Added ${if match_ip condition.
1631
8187c3f3
PH
1632PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1633 databases so that it will be absolutely obvious if a crash occurs in the
1634 DB library. This is a regular occurrence (often caused by mis-matched
1635 db.h files).
1636
ff790e47 1637PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1638 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1639 picked up on a user's system that detects such things. There doesn't seem
1640 to be a gcc warning option for this - only an attribute that has to be
1641 put on the function's prototype. It seems that in Fedora Core 4 they have
1642 set this on a number of new functions. No doubt there will be more in due
1643 course.
ff790e47 1644
5417f6d1
PH
1645PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1646 specify a transport. However, if an address that was verified by such a
1647 router was the subject of a callout, Exim crashed because it tried to
1648 read the rcpt_include_affixes from the non-existent transport. Now it
1649 just assumes that the setting of that option is false. This bug was
1650 introduced by 4.51/PH/31.
1651
59cf8544
PH
1652PH/28 Changed -d+all to exclude +memory, because that information is very
1653 rarely of interest, but it makes the output a lot bigger. People tend to
1654 do -d+all out of habit.
1655
e7ad8a65
PH
1656PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1657 code in os-type was giving problems when libc.so lives in lib64, like on
1658 x86_64 Fedora Core.
1659
ade42478
PH
1660PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1661 aren't the modern standard, and it seems that some systems' include files
1662 don't always have them. Exim was already checking for some of the newer
1663 ones like T_AAAA, and defining it itself. I've added checks for all the
1664 record types that Exim uses.
1665
182ad5cf
PH
1666PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1667 not automatically generating a new one, as it is supposed to. This
1668 prevented TLS from working. If the file did exist, but contained invalid
1669 data, a new version was generated, as expected. It was only the case of a
1670 non-existent file that was broken.
1671
b0d9fc80
TK
1672TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1673 with a change in libdomainkeys > 0.64.
1674
1675TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1676 from DNS. If the selector record carries the flag, it now has
1677 precedence over the domain-wide flag.
1678
1679TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1680
47c7a64a
PH
1681PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1682 the use of a port name that isn't defined in /etc/services) occurred, the
1683 message was deferred as in a normal delivery, and thus remained on the
1684 spool, instead of being failed because of the mua_wrapper setting. This
1685 is now fixed, and I tidied up some of the mua_wrapper messages at the
1686 same time.
1687
a388bce4
SC
1688SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1689 the messages in a hash of arrays rather than using individual hashes.
1690 This is a bit cleaner and results in dramatic memory savings, albeit
1691 at a slight CPU cost.
1692
1693SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1694 as requested by Marc Sherman.
1695
1696SC/10 Eximstats: added histograms for user specified patterns as requested
1697 by Marc Sherman.
1698
0793e4ed
SC
1699SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1700
c58b88df
PH
1701PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1702 fopen() in the content-scanning modules that did not already have it.
1703
e7ad8a65 1704
7982096b
PH
1705Exim version 4.51
1706-----------------
1707
1a46a8c5
PH
1708TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1709 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1710
2f079f46 1711TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1712
1713TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1714
1715PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1716 to test Sieve filters that use "vacation".
1717
1718PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1719 that changes the way the GnuTLS parameters are stored in the cache file.
1720 The new format can be generated externally. For backward compatibility,
1721 if the data in the cache doesn't make sense, Exim assumes it has read an
1722 old-format file, and it generates new data and writes a new file. This
1723 means that you can't go back to an older release without removing the
1724 file.
1725
1726PH/03 A redirect router that has both "unseen" and "one_time" set does not
1727 work if there are any delivery delays because "one_time" forces the
1728 parent to be marked "delivered", so its unseen clone is never tried
1729 again. For this reason, Exim now forbids the simultaneous setting of
1730 these two options.
1731
1732PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1733 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1734 entry if you want to know the details. The fix, however, neglected to
1735 consider the case when local delivery batching is involved. The test for
1736 "previously delivered" was not happening when checking to see if an
1737 address could be batched with a previous (undelivered) one; under
1738 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1739 address.
1a46a8c5
PH
1740
1741PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1742 in its include files, and this causes problems building Exim.
1743
1744PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1745 header_syntax) but Exim was just ignoring anything given after a slash.
1746 In particular, this caused confusion with an attempt to use "verify =
1747 reverse_host_lookup/defer_ok". An error is now given when options are
1748 supplied for verify items that do not have them. (Maybe reverse_host_
1749 lookup should have a defer_ok option, but that's a different point.)
1750
1751PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1752 defined by RFC 821) to 2048, because there were problems with some AUTH
1753 commands, and RFC 1869 says the size should be increased for extended
1754 SMTP commands that take arguments.
1755
1756PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1757 Finch).
1758
1759PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1760 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1761
49c2d5ea
PH
1762PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1763 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1764 whatever). Otherwise the password may appear in the log. Following change
1765 PH/42 below, there is no longer a chance of it appearing in a bounce
1766 message.
49c2d5ea 1767
bf759a8b
PH
1768PH/11 Installed exipick version 20050225.0 from John Jetmore.
1769
83364d30
PH
1770PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1771 of its addresses was ever tried. (Bugzilla bug #2.)
1772
7999bbd7
PH
1773PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1774 the result incorrectly in the debug output. (It correctly added a newline
1775 to what was transported.)
1776
7dbf77c9
PH
1777TF/01 Added $received_time.
1778
74e0617f
PH
1779PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1780 commented out examples of how to interface to a virus scanner and to
1781 SpamAssassin. Also added commented examples of av_scanner and
1782 spamd_address settings.
1783
2f079f46
PH
1784PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1785 and controls are allowed in which ACLs. There were a couple of minor
1786 errors. Some of the entries in the conditions table (which is a table of
1787 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1788 negation of where the condition IS allowed.
1789
8c841523
PH
1790PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1791
7766a4f0
PH
1792PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1793 header file does not have a version number, so I've had to invent a new
1794 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1795 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1796 radiusclient), but it was contributed by a Radius user.
1797
8b417f2c
PH
1798PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1799 files or directories, for OpenSSL.
1800
901f42cb
PH
1801PH/19 When an Exim process that is running as root has to create an Exim log
1802 file, it does so in a subprocess that runs as exim:exim so as to get the
1803 ownership right at creation (otherwise, other Exim processes might see
1804 the file with the wrong ownership). There was no test for failure of this
1805 fork() call, which would lead to the process getting stuck as it waited
1806 for a non-existent subprocess. Forks do occasionally fail when resources
1807 run out. I reviewed all the other calls to fork(); they all seem to check
1808 for failure.
1809
f9b9210e
PH
1810PH/20 When checking for unexpected SMTP input at connect time (before writing
1811 the banner), Exim was not dealing correctly with a non-positive return
1812 from the read() function. If the client had disconnected by this time,
1813 the result was a log entry for a synchronization error with an empty
1814 string after "input=" when read() returned zero. If read() returned -1
1815 (an event I could not check), uninitialized data bytes were printed.
1816 There were reports of junk text (parts of files, etc) appearing after
1817 "input=".
1818
54cdb463
PH
1819PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1820
cf00dad6
PH
1821PH/22 Added support for macro redefinition, and (re)definition in between
1822 driver and ACL definitions.
1823
acb1b346
PH
1824PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1825 forgetting to use the resulting value; it was using the unexpanded value.
1826
c5ddb310
PH
1827PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1828 hadn't been configured. The fix is from Juergen Kreileder, who
1829 understands it better than I do:
1830
1831 "Here's what I see happening with three configured cyrus_sasl
1832 authenticators configured (plain, login, cram-md5):
1833
1834 On startup auth_cyrus_sasl_init() gets called for each of these.
1835 This means three calls to sasl_listmech() without a specified mech_list.
1836 => SASL tests which mechs of all available mechs actually work
1837 => three warnings about OTP not working
1838 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1839
1840 With the patch, sasl_listmech() also gets called three times. But now
1841 SASL's mech_list option is set to the server_mech specified in the the
1842 authenticator. Or in other words, the answer from sasl_listmech()
1843 gets limited to just the mech you're testing for (which is different
1844 for each call.)
1845 => the return list contains just 'plain' or 'login', 'cram-md5' or
1846 nothing depending on the value of ob->server_mech.
1847
1848 I've just tested the patch: Authentication still works fine,
1849 unavailable mechs specified in the exim configuration are still
1850 caught, and the auth.log warnings about OTP are gone."
1851
31619da6
PH
1852PH/25 When debugging is enabled, the contents of the command line are added
1853 to the debugging output, even when log_selector=+arguments is not
1854 specified.
1855
bebaf0fc
PH
1856PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1857 answer is "GNU", and only if the return is "GNU/something" is the answer
1858 "Linux".
1859
475fe28a
PH
1860PH/27 $acl_verify_message is now set immediately after the failure of a
1861 verification in an ACL, and so is available in subsequent modifiers. In
1862 particular, the message can be preserved by coding like this:
1863
1864 warn !verify = sender
1865 set acl_m0 = $acl_verify_message
1866
1867 Previously, $acl_verify_message was set only while expanding "message"
1868 and "log_message" when a very denied access.
1869
7e8bec7a
PH
1870PH/28 Modified OS/os.c-Linux with
1871
1872 -#ifndef OS_LOAD_AVERAGE
1873 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1874
1875 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1876 nomenclature these days.)
1877
e4a89c47
PH
1878PH/29 Installed patch from the Sieve maintainer that adds the options
1879 sieve_useraddress and sieve_subaddress to the redirect router.
1880
5ca2a9a1
PH
1881PH/30 In these circumstances:
1882 . Two addresses routed to the same list of hosts;
1883 . First host does not offer TLS;
1884 . First host accepts first address;
1885 . First host gives temporary error to second address;
1886 . Second host offers TLS and a TLS session is established;
1887 . Second host accepts second address.
1888 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1889 and peerdn, if requested) that were in fact used only for the second
1890 address.
7e8bec7a 1891
c688b954
PH
1892PH/31 When doing a callout as part of verifying an address, Exim was not paying
1893 attention to any local part prefix or suffix that was matched by the
1894 router that accepted the address. It now behaves in the same way as it
1895 does for delivery: the affixes are removed from the local part unless
1896 rcpt_include_affixes is set on the transport.
1897
fed77020
PH
1898PH/32 Add the sender address, as F=<...>, to the log line when logging a
1899 timeout during the DATA phase of an incoming message.
1900
7fe1560f
PH
1901PH/33 Sieve envelope tests were broken for match types other than :is. I have
1902 applied a patch sanctioned by the Sieve maintainer.
c688b954 1903
ebb6e6d5
PH
1904PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1905 the uid or gid is negative. A case of a negative gid caused this to be
1906 noticed. The fix allows for either to be negative.
1907
9c4e8f60
PH
1908PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1909 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1910 overlooked.
1911
1912PH/36 The change PH/12 above was broken. Fixed it.
1913
d7174846
PH
1914PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1915 the grounds that routing the same address twice would always produce the
1916 same answer. This might have been true once, but it is certainly no
1917 longer true now. Routing a child address may depend on the previous
1918 routing that produced that child. Some complicated redirection strategies
1919 went wrong when messages had multiple recipients, and made Exim's
1920 behaviour dependent on the order in which the addresses were given.
1921
1922 I have moved the duplicate checking until after the routing is complete.
1923 Exim scans the addresses that are assigned to local and remote
1924 transports, and removes any duplicates. This means that more work will be
1925 done, as duplicates will always all be routed, but duplicates are
1926 presumably rare, so I don't expect this is of any significance.
1927
1928 For deliveries to pipes, files, and autoreplies, the duplicate checking
1929 still happens during the routing process, since they are not going to be
1930 routed further.
1931
cfe75fc3
PH
1932PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1933 It corrects a timeout issue with spamd. This is Ian's comment: "The
1934 background is that sometimes spamd either never reads data from a
1935 connection it has accepted, or it never writes response data. The exiscan
1936 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1937 blindly assumes that writes won't block so it may never time out."
1938
be22d70e
PH
1939PH/39 Allow G after quota size as well as K and M.
1940
0612b098
PH
1941PH/40 The value set for $authenticated_id in an authenticator may not contain
1942 binary zeroes or newlines because the value is written to log lines and
1943 to spool files. There was no check on this. Now the value is run through
1944 the string_printing() function so that such characters are converted to
1945 printable escape sequences.
1946
2e0c1448
PH
1947PH/41 $message_linecount is a new variable that contains the total number of
1948 lines in the message. Compare $body_linecount, which is the count for the
1949 body only.
1950
447d236c
PH
1951PH/42 Exim no longer gives details of delivery errors for specific addresses in
1952 bounce and delay warning messages, except in certain special cases, which
1953 are as follows:
1954
1955 (a) An SMTP error message from a remote host;
1956 (b) A message specified in a :fail: redirection;
1957 (c) A message specified in a "fail" command in a system filter;
1958 (d) A message specified in a FAIL return from the queryprogram router;
1959 (e) A message specified by the cannot_route_message router option.
1960
1961 In these cases only, Exim does include the error details in bounce and
1962 warning messages. There are also a few cases where bland messages such
1963 as "unrouteable address" or "local delivery error" are given.
1964
d20976dc
PH
1965PH/43 $value is now also set for the "else" part of a ${run expansion.
1966
f656d135
PH
1967PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1968 being worked on, but at least Exim now implements the latest version to
1969 play with."
1970
2e2a30b4
PH
1971PH/45 In a pipe transport, although a timeout while waiting for the pipe
1972 process to complete was treated as a delivery failure, a timeout while
1973 writing the message to the pipe was logged, but erroneously treated as a
1974 successful delivery. Such timeouts include transport filter timeouts. For
1975 consistency with the overall process timeout, these timeouts are now
1976 treated as errors, giving rise to delivery failures by default. However,
1977 there is now a new Boolean option for the pipe transport called
1978 timeout_defer, which, if set TRUE, converts the failures into defers for
1979 both kinds of timeout. A transport filter timeout is now identified in
1980 the log output.
1981
9176e9f0
PH
1982PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1983 systems where "make" and "gmake" are different, calling "gmake" at top
1984 level broke things. I've arranged for the value of $(MAKE) to be passed
1985 from the Makefile to this script so that it can call the same version of
1986 "make".
1987
7982096b 1988
bbe902f0
PH
1989A note about Exim versions 4.44 and 4.50
1990----------------------------------------
1991
1992Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1993changes of various kinds. As a consequence, a big documentation update was
1994needed. This delayed the release for rather longer than seemed good, especially
1995in the light of a couple of (minor) security issues. Therefore, the changes
1996that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1997release. So 4.44 and 4.50 are in effect two different branches that both start
1998from 4.43.
1999
2000I have left the 4.50 change log unchanged; it contains all the changes since
20014.43. The change log for 4.44 is below; many of its items are identical to
2002those for 4.50. This seems to be the most sensible way to preserve the
2003historical information.
2004
2005
f7b63901 2006Exim version 4.50
495ae4b0
PH
2007-----------------
2008
5fe762f6
PH
2009 1. Minor wording change to the doc/README.SIEVE file.
2010
139059f6 2011 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2012 computation of the current number of files was incorrect.
495ae4b0 2013
7086e875
PH
2014 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2015 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2016 place.
2017
35af9f61
PH
2018 4. Give more explanation in the error message when the command for a transport
2019 filter fails to execute.
2020
b668c215
PH
2021 5. There are several places where Exim runs a non-Exim command in a
2022 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2023 was being done only for the command run by the queryprogram router. It is
2024 now done for all such subprocesses. The other cases are: ${run, transport
2025 filters, and the commands run by the lmtp and pipe transports.
2026
a494b1e1
PH
2027 6. Added CONFIGURE_GROUP build-time option.
2028
2029 7. Some older OS have a limit of 256 on the maximum number of file
2030 descriptors. Exim was using setrlimit() to set 1000 as a large value
2031 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2032 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2033
c5fcb476
PH
2034 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2035 was an oversight, and furthermore, ever since the addition of extra
2036 controls (e.g. 4.43/32), the checks on when to allow different forms of
2037 "control" were broken. There should now be diagnostics for all cases when a
2038 control that does not make sense is encountered.
2039
69358f02
PH
2040 9. Added the /retain_sender option to "control=submission".
2041
5be20824
PH
204210. $recipients is now available in the predata ACL (oversight).
2043
eb2c0248
PH
204411. Tidy the search cache before the fork to do a delivery from a message
2045 received from the command line. Otherwise the child will trigger a lookup
2046 failure and thereby defer the delivery if it tries to use (for example) a
2047 cached ldap connection that the parent has called unbind on.
2048
2a3eea10
PH
204912. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2050 of $address_data from the recipient verification was clobbered by the
2051 sender verification.
2052
205313. The value of address_data from a sender verification is now available in
2054 $sender_address_data in subsequent conditions in the ACL statement.
2055
23c7ff99
PH
205614. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2057
4deaf07d
PH
205815. Added a new option "connect=<time>" to callout options, to set a different
2059 connection timeout.
2060
926e1192
PH
206116. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2062 was its contents. (It was OK if the option was not defined at all.)
2063
650edc6f
PH
206417. A "Completed" log line is now written for messages that are removed from
2065 the spool by the -Mrm option.
2066
2c7db3f5
PH
206718. New variables $sender_verify_failure and $recipient_verify_failure contain
2068 information about exactly what failed.
2069
3d235903
PH
207019. Added -dd to debug only the daemon process.
2071
7c7ad977
PH
207220. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2073 handles timeouts, both on the server side and network timeouts. Renamed the
2074 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2075
981756db
PH
207621. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2077 It is now set to "smtps".
2078
d4eb88df
PH
207922. $host_address is now set to the target address during the checking of
2080 ignore_target_hosts.
2081
208223. When checking ignore_target_hosts for an ipliteral router, no host name was
2083 being passed; this would have caused $sender_host_name to have been used if
2084 matching the list had actually called for a host name (not very likely,
2085 since this list is usually IP addresses). A host name is now passed as
2086 "[x.x.x.x]".
2087
7d468ab8
PH
208824. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2089 code that specifies a non-restarting handler (typically sigaction() in
2090 modern systems) in an attempt to fix a rare and obscure crash bug.
2091
209225. Narrowed the window for a race in the daemon that could cause it to ignore
2093 SIGCHLD signals. This is not a major problem, because they are used only to
2094 wake it up if nothing else does.
2095
62c0818f
PH
209626. A malformed maildirsize file could cause Exim to calculate negative values
2097 for the mailbox size or file count. Odd effects could occur as a result.
2098 The maildirsize information is now recalculated if the size or filecount
2099 end up negative.
2100
26034054
PH
210127. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2102 support for a long time. Removed HAVE_SYS_VFS_H.
2103
af66f652
PH
210428. Installed the latest version of exipick from John Jetmore.
2105
90af77f4
PH
210629. In an address list, if the pattern was not a regular expression, an empty
2107 subject address (from a bounce message) matched only if the pattern was an
2108 empty string. Non-empty patterns were not even tested. This was the wrong
2109 because it is perfectly reasonable to use an empty address as part of a
2110 database query. An empty address is now tested by patterns that are
2111 lookups. However, all the other forms of pattern expect the subject to
2112 contain a local part and a domain, and therefore, for them, an empty
2113 address still always fails if the pattern is not itself empty.
2114
d8ef3577
PH
211530. Exim went into a mad DNS loop when attempting to do a callout where the
2116 host was specified on an smtp transport, and looking it up yielded more
2117 than one IP address.
2118
5cb8cbc6
PH
211931. Re-factored the code for checking spool and log partition space into a
2120 function that finds that data and another that does the check. The former
2121 is then used to implement four new variables: $spool_space, $log_space,
2122 $spool_inodes, and $log_inodes.
2123
14702f5b
PH
212432. The RFC2047 encoding function was originally intended for short strings
2125 such as real names; it was not keeping to the 75-character limit for
2126 encoded words that the RFC imposes. It now respects the limit, and
2127 generates multiple encoded words if necessary. To be on the safe side, I
2128 have increased the buffer size for the ${rfc2047: expansion operator from
2129 1024 to 2048 bytes.
2130
063b1e99
PH
213133. It is now permitted to omit both strings after an "if" condition; if the
2132 condition is true, the result is "true". As before, when the second string
2133 is omitted, a false condition yields an empty string. This makes it less
2134 cumbersome to write custom ACL and router conditions.
2135
652e1b65
PH
213634. Failure to deliver a bounce message always caused it to be frozen, even if
2137 there was an errors_to setting on the router. The errors_to setting is now
2138 respected.
2139
6f0c9a4f
PH
214035. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2141 canonical form (fully expanded) before being placed in
2142 $sender_host_address.
2143
33397d19
PH
214436. The table in the code that translates DNS record types into text (T_A to
2145 "A" for instance) was missing entries for NS and CNAME. It is just possible
2146 that this could have caused confusion if both these types were looked up
2147 for the same domain, because the text type is used as part of Exim's
2148 per-process caching. But the chance of anyone hitting this buglet seems
2149 very small.
2150
7bb56e1f
PH
215137. The dnsdb lookup has been extended in a number of ways.
2152
2153 (1) There is a new type, "zns", which walks up the domain tree until it
2154 finds some nameserver records. It should be used with care.
2155
ea3bc19b
PH
2156 (2) There is a new type, "mxh", which is like "mx" except that it returns
2157 just the host names, not the priorities.
2158
2159 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2160 looked up. The behaviour when one of the lookups defers can be
2161 controlled by a keyword.
7bb56e1f 2162
ea3bc19b 2163 (4) It is now possible to specify the separator character for use when
7bb56e1f 2164 multiple records are returned.
33397d19 2165
0bcb2a0e
PH
216638. The dnslists ACL condition has been extended: it is now possible to supply
2167 a list of IP addresses and/or domains to be looked up in a particular DNS
2168 domain.
2169
2ac0e484
PH
217039. Added log_selector=+queue_time_overall.
2171
4e1fde53
PH
217240. When running the queue in the test harness, wait just a tad after forking a
2173 delivery process, to get repeatability of debugging output.
2174
de365ded
PH
217541. Include certificate and key file names in error message when GnuTLS fails
2176 to set them up, because the GnuTLS error message doesn't include the name
2177 of the failing file when there is a problem reading it.
2178
f05da2e8
PH
217942. Allow both -bf and -bF in the same test run.
2180
d6453af2
PH
218143. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2182
f7b63901
PH
218344. The "Exiscan patch" is now merged into the mainline Exim source.
2184
218545. Sometimes the final signoff response after QUIT could fail to get
2186 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2187 < 0 before doing a fflush(). This bug looks as though it goes back to the
2188 introduction of TLS in release 3.20, but "sometimes" must have been rare
2189 because the tests only now provoked it.
2190
a444213a
PH
219146. Reset the locale to "C" after calling embedded Perl, in case it was changed
2192 (this can affect the format of dates).
2193
0ec020ea
PH
219447. exim_tidydb, when checking for the continued existence of a message for
2195 which it has found a message-specific retry record, was not finding
2196 messages that were in split spool directories. Consequently, it was
2197 deleting retry records that should have stayed in existence.
2198
b1206957
PH
219948. Steve fixed some bugs in eximstats.
2200
220149. The SPA authentication driver was not abandoning authentication and moving
2202 on to the next authenticator when an expansion was forced to fail,
2203 contradicting the general specification for all authenticators. Instead it
2204 was generating a temporary error. It now behaves as specified.
2205
26dd5a95
PH
220650. The default ordering of permitted cipher suites for GnuTLS was pessimal
2207 (the order specifies the preference for clients). The order is now AES256,
2208 AES128, 3DES, ARCFOUR128.
2209
343b2385
PH
221051. Small patch to Sieve code - explicitly set From: when generating an
2211 autoreply.
2212
1c5466b9
PH
221352. Exim crashed if a remote delivery caused a very long error message to be
2214 recorded - for instance if somebody sent an entire SpamAssassin report back
2215 as a large number of 550 error lines. This bug was coincidentally fixed by
2216 increasing the size of one of Exim's internal buffers (big_buffer) that
2217 happened as part of the Exiscan merge. However, to be on the safe side, I
2218 have made the code more robust (and fixed the comments that describe what
2219 is going on).
2220
55ee9ee3
PH
222153. Now that there can be additional text after "Completed" in log lines (if
2222 the queue_time_overall log selector is set), a one-byte patch to exigrep
2223 was needed to allow it to recognize "Completed" as not the last thing in
2224 the line.
2225
d38f8232
PH
222654. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2227 patch that reportedly fixes this has been added. I am not expert enough to
2228 create a test for it. This is what the patch creator wrote:
2229
2230 "I found a little strange behaviour of ldap code when working with
2231 Windows 2003 AD Domain, where users was placed in more than one
2232 Organization Units. When I tried to give exim partial DN, the exit code
2233 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2234 But simultaneously result of request was absolutely normal ldap result,
2235 so I produce this patch..."
2236
3295e65b
PH
2237 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2238 REFERENCE, so I have modified the code to exclude the patch when that macro
2239 is not defined.
2240
7102e136
PH
224155. Some experimental protocols are using DNS PTR records for new purposes. The
2242 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2243 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2244 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2245 CAN-2005-0021
7102e136 2246
3ca0ba97
PH
224756. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2248
c2bcbe20
PH
224957. Double the size of the debug message buffer (to 2048) so that more of very
2250 long debug lines gets shown.
2251
18ce445d
PH
225258. The exicyclog utility now does better if the number of log files to keep
2253 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2254
1f5b4c3d
PH
225559. Two changes related to the smtp_active_hostname option:
2256
2257 (1) $smtp_active_hostname is now available as a variable.
2258 (2) The default for smtp_banner uses $smtp_active_hostname instead
2259 of $primary_hostname.
2260
b975ba52
PH
226160. The host_aton() function is supposed to be passed a string that is known
2262 to be a valid IP address. However, in the case of IPv6 addresses, it was
2263 not checking this. This is a hostage to fortune. Exim now panics and dies
2264 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2265 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2266 components; fortuitously, this particular loophole had already been fixed
2267 by change 4.50/55 above.
2268
2269 If there are any other similar loopholes, the new check in host_aton()
2270 itself should stop them being exploited. The report I received stated that
2271 data on the command line could provoke the exploit when Exim was running as
2272 exim, but did not say which command line option was involved. All I could
2273 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2274 running as the user.
ea3a6f44 2275 CAN-2005-0021
85b87bc2
PH
2276
227761. There was a buffer overflow vulnerability in the SPA authentication code
2278 (which came originally from the Samba project). I have added a test to the
2279 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2280 CAN-2005-0022
b975ba52 2281
17ffcae7
PH
228262. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2283 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2284
d95f9fdb
PH
228563. The daemon start-up calls getloadavg() while still root for those OS that
2286 need the first call to be done as root, but it missed one case: when
2287 deliver_queue_load_max is set with deliver_drop_privilege. This is
2288 necessary for the benefit of the queue runner, because there is no re-exec
2289 when deliver_drop_privilege is set.
2290
86b8287f
PH
229164. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2292 This has been fixed.
2293
60dc5e56
PH
229465. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2295 was in use, was not putting the data itself into the right store pool;
2296 consequently, it could be overwritten for a subsequent message in the same
2297 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2298 the caching.)
2299
533244af
PH
230066. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2301
a5a28604
PH
230267. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2303 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2304 the function were treating the return as a boolean value, which happened to
2305 work because 0=false and not-0=true, but is not correct code.
2306
7e634d24
PH
230768. The host_aton() function was not handling scoped IPv6 addresses (those
2308 with, for example, "%eth0" on the end) correctly.
2309
3e11c26b
PH
231069. Fixed some compiler warnings in acl.c for the bitmaps specified with
2311 negated items (that is, ~something) in unsigned ints. Some compilers
2312 apparently mutter when there is no cast.
2313
6729cf78
PH
231470. If an address verification called from an ACL failed, and did not produce a
2315 user-specific message (i.e. there was only a "system" message), nothing was
2316 put in $acl_verify_message. In this situation, it now puts the system
2317 message there.
2318
00f00ca5
PH
231971. Change 4.23/11 added synchronization checking at the start of an SMTP
2320 session; change 4.31/43 added the unwanted input to the log line - except
2321 that it did not do this in the start of session case. It now does.
2322
c9bdd01c
PH
232372. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2324 This is wrong and can cause the other end to generate a synchronization
2325 error if it is another Exim or anything else that does the synchronization
2326 check. A QUIT command is no longer sent after a timeout.
2327
d43194df
PH
232873. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2329 during host lookups.
2330
fe5b5d0b
PH
233174. The defer_ok option of callout verification was not working if it was used
2332 when verifying addresses in header lines, that is, for this case:
2333
2334 verify = header_sender/callout=defer_ok
2335
76a2d7ba
PH
233675. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2337 those file descriptors could be used for SMTP connections. If anything
2338 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2339 could be sent to the SMTP client, causing chaos. The daemon now opens
2340 stdin, stdout, and stderr to /dev/null when it puts itself into the
2341 background.
2342
234376. Arrange for output from Perl's "warn" command to be written to Exim's main
2344 log by default. The user can override this with suitable Perl magic.
2345
04f7d5b9
PH
234677. The use of log_message on a "discard" ACL verb, which is supposed to add to
2347 the log message when discard triggers, was not working for the DATA ACL or
2348 for the non-SMTP ACL.
2349
bc60667e
PH
235078. Error message wording change in sieve.c.
2351
bb6e88ff
PH
235279. If smtp_accept_max_per_host was set, the number of connections could be
2353 restricted to fewer than expected, because the daemon was trying to set up
2354 a new connection before checking whether the processes handling previous
2355 connections had finished. The check for completed processes is now done
2356 earlier. On busy systems, this bug wouldn't be noticed because something
2357 else would have woken the daemon, and it would have reaped the completed
2358 process earlier.
2359
1e70f85b
PH
236080. If a message was submitted locally by a user whose login name contained one
2361 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2362 It caused a spool format error. I have fixed the spool reading code. A
2363 related problem was that the "from" clause in the Received: line became
2364 illegal because of the space(s). It is now covered by ${quote_local_part.
2365
236681. Included the latest eximstats from Steve (adds average sizes to HTML Top
2367 tables).
2368
4e01f9d6
PH
236982. Updated OS/Makefile-AIX as per message from Mike Meredith.
2370
1ee1cef2
PH
237183. Patch from Sieve maintainer to fix unterminated string problem in
2372 "vacation" handling.
2373
6e2b4ccc
PH
237484. Some minor changes to the Linux configuration files to help with other
2375 OS variants using glibc.
2376
8e669ac1
PH
237785. One more patch for Sieve to update vacation handling to latest spec.
2378
495ae4b0 2379
bbe902f0
PH
2380----------------------------------------------------
2381See the note above about the 4.44 and 4.50 releases.
2382----------------------------------------------------
2383
2384
2385Exim version 4.44
2386-----------------
2387
2388 1. Change 4.43/35 introduced a bug that caused file counts to be
2389 incorrectly computed when quota_filecount was set in an appendfile
2390 transport
2391
2392 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2393 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2394 place.
2395
2396 3. Give more explanation in the error message when the command for a transport
2397 filter fails to execute.
2398
2399 4. There are several places where Exim runs a non-Exim command in a
2400 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2401 was being done only for the command run by the queryprogram router. It is
2402 now done for all such subprocesses. The other cases are: ${run, transport
2403 filters, and the commands run by the lmtp and pipe transports.
2404
2405 5. Some older OS have a limit of 256 on the maximum number of file
2406 descriptors. Exim was using setrlimit() to set 1000 as a large value
2407 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2408 systems. I've change it so that if it can't get 1000, it tries for 256.
2409
2410 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2411 was an oversight, and furthermore, ever since the addition of extra
2412 controls (e.g. 4.43/32), the checks on when to allow different forms of
2413 "control" were broken. There should now be diagnostics for all cases when a
2414 control that does not make sense is encountered.
2415
2416 7. $recipients is now available in the predata ACL (oversight).
2417
2418 8. Tidy the search cache before the fork to do a delivery from a message
2419 received from the command line. Otherwise the child will trigger a lookup
2420 failure and thereby defer the delivery if it tries to use (for example) a
2421 cached ldap connection that the parent has called unbind on.
2422
2423 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2424 of $address_data from the recipient verification was clobbered by the
2425 sender verification.
2426
242710. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2428 was its contents. (It was OK if the option was not defined at all.)
2429
243011. A "Completed" log line is now written for messages that are removed from
2431 the spool by the -Mrm option.
2432
243312. $host_address is now set to the target address during the checking of
2434 ignore_target_hosts.
2435
243613. When checking ignore_target_hosts for an ipliteral router, no host name was
2437 being passed; this would have caused $sender_host_name to have been used if
2438 matching the list had actually called for a host name (not very likely,
2439 since this list is usually IP addresses). A host name is now passed as
2440 "[x.x.x.x]".
2441
244214. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2443 code that specifies a non-restarting handler (typically sigaction() in
2444 modern systems) in an attempt to fix a rare and obscure crash bug.
2445
244615. Narrowed the window for a race in the daemon that could cause it to ignore
2447 SIGCHLD signals. This is not a major problem, because they are used only to
2448 wake it up if nothing else does.
2449
245016. A malformed maildirsize file could cause Exim to calculate negative values
2451 for the mailbox size or file count. Odd effects could occur as a result.
2452 The maildirsize information is now recalculated if the size or filecount
2453 end up negative.
2454
245517. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2456 support for a long time. Removed HAVE_SYS_VFS_H.
2457
ea3a6f44 245818. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2459
246019. Allow an empty sender to be matched against a lookup in an address list.
2461 Previously the only cases considered were a regular expression, or an
2462 empty pattern.
2463
246420. Exim went into a mad DNS lookup loop when doing a callout where the
2465 host was specified on the transport, if the DNS lookup yielded more than
2466 one IP address.
2467
ea3a6f44
NM
246821. The RFC2047 encoding function was originally intended for short strings
2469 such as real names; it was not keeping to the 75-character limit for
2470 encoded words that the RFC imposes. It now respects the limit, and
2471 generates multiple encoded words if necessary. To be on the safe side, I
2472 have increased the buffer size for the ${rfc2047: expansion operator from
2473 1024 to 2048 bytes.
bbe902f0 2474
ea3a6f44
NM
247522. Failure to deliver a bounce message always caused it to be frozen, even if
2476 there was an errors_to setting on the router. The errors_to setting is now
2477 respected.
bbe902f0
PH
2478
247923. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2480 canonical form (fully expanded) before being placed in
2481 $sender_host_address.
2482
248324. Updated eximstats to version 1.33
2484
ea3a6f44
NM
248525. Include certificate and key file names in error message when GnuTLS fails
2486 to set them up, because the GnuTLS error message doesn't include the name
2487 of the failing file when there is a problem reading it.
bbe902f0
PH
2488
248926. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2490 As per change 25.
bbe902f0 2491
ea3a6f44
NM
249227. Reset the locale to "C" after calling embedded Perl, in case it was changed
2493 (this can affect the format of dates).
bbe902f0 2494
ea3a6f44
NM
249528. exim_tidydb, when checking for the continued existence of a message for
2496 which it has found a message-specific retry record, was not finding
2497 messages that were in split spool directories. Consequently, it was
2498 deleting retry records that should have stayed in existence.
bbe902f0
PH
2499
250029. eximstats updated to version 1.35
2501 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2502 1.35 - bugfix such that pie charts by volume are generated correctly
2503
ea3a6f44
NM
250430. The SPA authentication driver was not abandoning authentication and moving
2505 on to the next authenticator when an expansion was forced to fail,
2506 contradicting the general specification for all authenticators. Instead it
2507 was generating a temporary error. It now behaves as specified.
bbe902f0 2508
ea3a6f44
NM
250931. The default ordering of permitted cipher suites for GnuTLS was pessimal
2510 (the order specifies the preference for clients). The order is now AES256,
2511 AES128, 3DES, ARCFOUR128.
bbe902f0 2512
ea3a6f44
NM
251331. Small patch to Sieve code - explicitly set From: when generating an
2514 autoreply.
bbe902f0 2515
ea3a6f44
NM
251632. Exim crashed if a remote delivery caused a very long error message to be
2517 recorded - for instance if somebody sent an entire SpamAssassin report back
2518 as a large number of 550 error lines. This bug was coincidentally fixed by
2519 increasing the size of one of Exim's internal buffers (big_buffer) that
2520 happened as part of the Exiscan merge. However, to be on the safe side, I
2521 have made the code more robust (and fixed the comments that describe what
2522 is going on).
bbe902f0 2523
ea3a6f44
NM
252433. Some experimental protocols are using DNS PTR records for new purposes. The
2525 keys for these records are domain names, not reversed IP addresses. The
2526 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2527 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2528 CAN-2005-0021
2529
ea3a6f44
NM
253034. The host_aton() function is supposed to be passed a string that is known
2531 to be a valid IP address. However, in the case of IPv6 addresses, it was
2532 not checking this. This is a hostage to fortune. Exim now panics and dies
2533 if the condition is not met. A case was found where this could be provoked
2534 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2535 components; fortuitously, this particular loophole had already been fixed
2536 by change 4.50/55 or 4.44/33 above.
2537
2538 If there are any other similar loopholes, the new check in host_aton()
2539 itself should stop them being exploited. The report I received stated that
2540 data on the command line could provoke the exploit when Exim was running as
2541 exim, but did not say which command line option was involved. All I could
2542 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2543 running as the user.
bbe902f0
PH
2544 CAN-2005-0021
2545
ea3a6f44
NM
254635. There was a buffer overflow vulnerability in the SPA authentication code
2547 (which came originally from the Samba project). I have added a test to the
2548 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2549 CAN-2005-0022
2550
ea3a6f44
NM
255136. The daemon start-up calls getloadavg() while still root for those OS that
2552 need the first call to be done as root, but it missed one case: when
2553 deliver_queue_load_max is set with deliver_drop_privilege. This is
2554 necessary for the benefit of the queue runner, because there is no re-exec
2555 when deliver_drop_privilege is set.
bbe902f0 2556
ea3a6f44
NM
255737. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2558 was in use, was not putting the data itself into the right store pool;
2559 consequently, it could be overwritten for a subsequent message in the same
2560 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2561 the caching.)
bbe902f0 2562
ea3a6f44
NM
256338. Sometimes the final signoff response after QUIT could fail to get
2564 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2565 < 0 before doing a fflush(). This bug looks as though it goes back to the
2566 introduction of TLS in release 3.20, but "sometimes" must have been rare
2567 because the tests only now provoked it.
bbe902f0
PH
2568
2569
495ae4b0
PH
2570Exim version 4.43
2571-----------------
2572
2573 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2574 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2575 Now it returns an integer. A number of calls were still expecting a T/F
2576 return. Fortuitously, in all cases, the tests worked in OK situations,
2577 which is the norm. However, things would have gone wrong on any write
2578 failures on the smtp file descriptor. This function is used when sending
2579 messages over SMTP and also when doing verify callouts.
2580
2581 2. When Exim is called to do synchronous delivery of a locally submitted
2582 message (the -odf or -odi options), it no longer closes stderr before doing
2583 the delivery.
2584
2585 3. Implemented the mua_wrapper option.
2586
2587 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2588
2589 5. Implemented the functions header_remove(), header_testname(),
2590 header_add_at_position(), and receive_remove_recipient(), and exported them
2591 to local_scan().
2592
2593 6. If an ACL "warn" statement specified the addition of headers, Exim already
2594 inserted X-ACL-Warn: at the start if there was no header name. However, it
2595 was not making this test for the second and subsequent header lines if
2596 there were newlines in the string. This meant that an invalid header could
2597 be inserted if Exim was badly configured.
2598
2599 7. Allow an ACL "warn" statement to add header lines at the start or after all
2600 the Received: headers, as well as at the end.
2601
2602 8. Added the rcpt_4xx retry error code.
2603
2604 9. Added postmaster_mailfrom=xxx to callout verification option.
2605
260610. Added mailfrom=xxxx to the callout verification option, for verify=
2607 header_sender only.
2608
260911. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2610 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2611
261212. Inserted some casts to stop certain compilers warning when using pointer
2613 differences as field lengths or precisions in printf-type calls (mostly
2614 affecting debugging statements).
2615
261613. Added optional readline() support for -be (dynamically loaded).
2617
261814. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2619 same clock tick as a message's arrival, so that its received time was the
2620 same as the "first fail" time on the retry record, and that message
2621 remained on the queue past the ultimate address timeout, every queue runner
2622 would try a delivery (because it was past the ultimate address timeout) but
2623 after another failure, the ultimate address timeout, which should have then
2624 bounced the address, did not kick in. This was a "< instead of <=" error;
2625 in most cases the first failure would have been in the next clock tick
2626 after the received time, and all would be well.
2627
262815. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2629 being recognized when the domain list was tested by the match_domain
2630 condition in an expansion string.
2631
263216. Added the ${str2b64: operator.
2633
263417. Exim was always calling setrlimit() to set a large limit for the number of
2635 processes, without checking whether the existing limit was already
2636 adequate. (It did check for the limit on file descriptors.) Furthermore,
2637 errors from getrlimit() and setrlimit() were being ignored. Now they are
2638 logged to the main and panic logs, but Exim does carry on, to try to do its
2639 job under whatever limits there are.
2640
264118. Imported PCRE 5.0.
2642
264319. Trivial typo in log message " temporarily refused connection" (the leading
2644 space).
2645
264620. If the log selector return_path_on_delivery was set and an address was
2647 redirected to /dev/null, the delivery process crashed because it assumed
2648 that a return path would always be set for a "successful" delivery. In this
2649 case, the whole delivery is bypassed as an optimization, and therefore no
2650 return path is set.
2651
265221. Internal re-arrangement: the function for sending a challenge and reading
2653 a response while authentication was assuming a zero-terminated challenge
2654 string. It's now changed to take a pointer and a length, to allow for
2655 binary data in such strings.
2656
265722. Added the cyrus_sasl authenticator (code supplied by MBM).
2658
265923. Exim was not respecting finduser_retries when seeking the login of the
2660 uid under which it was called; it was always trying 10 times. (The default
2661 setting of finduser_retries is zero.) Also, it was sleeping after the final
2662 failure, which is pointless.
2663
266424. Implemented tls_on_connect_ports.
2665
266625. Implemented acl_smtp_predata.
2667
266826. If the domain in control=submission is set empty, Exim assumes that the
2669 authenticated id is a complete email address when it generates From: or
2670 Sender: header lines.
2671
267227. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2673 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2674 chown and chgrp in /bin and hostname in /usr/bin.
2675
267628. Exim was keeping the "process log" file open after each use, just as it
2677 does for the main log. This opens the possibility of it remaining open for
2678 long periods when the USR1 signal hits a daemon. Occasional processlog
2679 errors were reported, that could have been caused by this. Anyway, it seems
2680 much more sensible not to leave this file open at all, so that is what now
2681 happens.
2682
268329. The long-running daemon process does not normally write to the log once it
2684 has entered its main loop, and it closes the log before doing so. This is
2685 so that log files can straightforwardly be renamed and moved. However,
2686 there are a couple of unusual error situations where the daemon does write
2687 log entries, and I had neglected to close the log afterwards.
2688
268930. The text of an SMTP error response that was received during a remote
2690 delivery was being truncated at 512 bytes. This is too short for some of
2691 the long messages that one sometimes sees. I've increased the limit to
2692 1024.
2693
269431. It is now possible to make retry rules that apply only when a message has a
2695 specific sender, in particular, an empty sender.
2696
269732. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2698 it possible to be selective about when SMTP synchronization is enforced.
2699
270033. Added "control = caseful_local_part" and "control = "caselower_local_part".
2701
270232. Implemented hosts_connection_nolog.
2703
270433. Added an ACL for QUIT.
2705
270634. Setting "delay_warning=" to disable warnings was not working; it gave a
2707 syntax error.
2708
270935. Added mailbox_size and mailbox_filecount to appendfile.
2710
271136. Added control = no_multiline_responses to ACLs.
2712
271337. There was a bug in the logic of the code that waits for the clock to tick
2714 in the case where the clock went backwards by a substantial amount such
2715 that the microsecond fraction of "now" was more than the microsecond
2716 fraction of "then" (but the whole seconds number was less).
2717
271838. Added support for the libradius Radius client library this is found on
2719 FreeBSD (previously only the radiusclient library was supported).
2720
2721
2722Exim version 4.42
2723-----------------
2724
2725 1. When certain lookups returned multiple values in the form name=value, the
2726 quoting of the values was not always being done properly. Specifically:
2727 (a) If the value started with a double quote, but contained no whitespace,
2728 it was not quoted.
2729 (b) If the value contained whitespace other than a space character (i.e.
2730 tabs or newlines or carriage returns) it was not quoted.
2731 This fix has been applied to the mysql and pgsql lookups by writing a
2732 separate quoting function and calling it from the lookup code. The fix
2733 should probably also be applied to nisplus, ibase and oracle lookups, but
2734 since I cannot test any of those, I have not disturbed their existing code.
2735
2736 2. A hit in the callout cache for a specific address caused a log line with no
2737 reason for rejecting RCPT. Now it says "Previous (cached) callout
2738 verification failure".
2739
2740 3. There was an off-by-one bug in the queryprogram router. An over-long
2741 return line was truncated at 256 instead of 255 characters, thereby
2742 overflowing its buffer with the terminating zero. As well as fixing this, I
2743 have increased the buffer size to 1024 (and made a note to document this).
2744
2745 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2746 when Exim is waiting for an SMTP response from a remote server, Exim
2747 restarts its select() call on the socket, thereby resetting its timeout.
2748 This is not a problem when such interrupts are rare. Somebody set up a cron
2749 job to run exiwhat every 2 minutes, which is less than the normal select()
2750 timeout (5 or 10 minutes). This meant that the select() timeout never
2751 kicked in because it was always reset. I have fixed this by comparing the
2752 time when an interrupt arrives with the time at the start of the first call
2753 to select(). If more time than the timeout has elapsed, the interrupt is
2754 treated as a timeout.
2755
2756 5. Some internal re-factoring in preparation for the addition of Sieve
2757 extensions (by MH). In particular, the "personal" test is moved to a
2758 separate function, and given an option for scanning Cc: and Bcc: (which is
2759 not set for Exim filters).
2760
2761 6. When Exim created an email address using the login of the caller as the
2762 local part (e.g. when creating a From: or Sender: header line), it was not
2763 quoting the local part when it contained special characters such as @.
2764
2765 7. Installed new OpenBSD configuration files.
2766
2767 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2768 try to make them clearer.
2769
2770 9. Callout options, other than the timeout value, were being ignored when
2771 verifying sender addresses in header lines. For example, when using
2772
2773 verify = header_sender/callout=no_cache
2774
2775 the cache was (incorrectly) being used.
2776
277710. Added a missing instance of ${EXE} to the exim_install script; this affects
2778 only the Cygwin environment.
2779
278011. When return_path_on_delivery was set as a log selector, if different remote
2781 addresses in the same message used different return paths and parallel
2782 remote delivery occurred, the wrong values would sometimes be logged.
2783 (Whenever a remote delivery process finished, the return path value from
2784 the most recently started remote delivery process was logged.)
2785
278612. RFC 3848 specifies standard names for the "with" phrase in Received: header
2787 lines when AUTH and/or TLS are in use. This is the "received protocol"
2788 field. Exim used to use "asmtp" for authenticated SMTP, without any
2789 indication (in the protocol name) for TLS use. Now it follows the RFC and
2790 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2791 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2792 names appear in log lines as well as in Received: header lines.
2793
279413. Installed MH's patches for Sieve to add the "copy" and "vacation"
2795 extensions, and comparison tests, and to fix some bugs.
2796
279714. Changes to the "personal" filter test:
2798
2799 (1) The test was buggy in that it was just doing the equivalent of
2800 "contains" tests on header lines. For example, if a user's address was
2801 anne@some.where, the "personal" test would incorrectly be true for
2802
2803 To: susanne@some.where
2804
2805 This test is now done by extracting each address from the header in turn,
2806 and checking the entire address. Other tests that are part of "personal"
2807 are now done using regular expressions (for example, to check local parts
2808 of addresses in From: header lines).
2809
2810 (2) The list of non-personal local parts in From: addresses has been
2811 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2812 taken from the Sieve specification recommendations.
2813
2814 (3) If the message contains any header line starting with "List-" it is
2815 treated as non-personal.
2816
2817 (4) The test for "circular" in the Subject: header line has been removed
2818 because it now seems ill-conceived.
2819
282015. Minor typos in src/EDITME comments corrected.
2821
282216. Installed latest exipick from John Jetmore.
2823
282417. If headers_add on a router specified a text string that was too long for
2825 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2826 of string_sprintf() is now avoided.
2827
282818. $message_body_size was not set (it was always zero) when running the DATA
2829 ACL and the local_scan() function.
2830
283119. For the "mail" command in an Exim filter, no default was being set for
2832 the once_repeat time, causing a random time value to be used if "once" was
2833 specified. (If the value happened to be <= 0, no repeat happened.) The
2834 default is now 0s, meaning "never repeat". The "vacation" command was OK
2835 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2836 (I found it when inspecting the code).
2837
283820. There is now an overall timeout for performing a callout verification. It
2839 defaults to 4 times the callout timeout, which applies to individual SMTP
2840 commands during the callout. The overall timeout applies when there is more
2841 than one host that can be tried. The timeout is checked before trying the
2842 next host. This prevents very long delays if there are a large number of
2843 hosts and all are timing out (e.g. when the network connections are timing
2844 out). The value of the overall timeout can be changed by specifying an
2845 additional sub-option for "callout", called "maxwait". For example:
2846
2847 verify = sender/callout=5s,maxwait=20s
2848
284921. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2850 to the end before writing, but this should make it even safer).
2851
285222. Exim was forgetting that it had advertised PIPELINING for the second and
2853 subsequent messages on an SMTP connection. It was also not resetting its
2854 memory on STARTTLS and an internal HELO.
2855
285623. When Exim logs an SMTP synchronization error within a session, it now
2857 records whether PIPELINING has been advertised or not.
2858
285924. Added 3 instances of "(long int)" casts to time_t variables that were being
2860 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2861 rather than long int.
2862
286325. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2864
286526. Added the never_mail option to autoreply.
2866
2867
2868Exim version 4.41
2869-----------------
2870
2871 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2872 crash if the getsockname() call failed; this can happen if a connection is
2873 closed very soon after it is established. The problem was simply in the
2874 order in which certain operations were done, causing Exim to try to write
2875 to the SMTP stream before it had set up the file descriptor. The bug has
2876 been fixed by making things happen in the correct order.
2877
2878
2879Exim version 4.40
2880-----------------
2881
2882 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2883 before the connection was closed, thus losing the rejection response.
2884
2885 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2886 some early Solaris releases, but causes trouble in current releases where
2887 socklen_t is defined.
2888
2889 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2890 always exist.
2891
2892 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2893 configured.
2894
2895 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2896 that releasing the top of it at the end releases what was used for sub-
2897 expansions (unless the block got too big). However, discard this block if
2898 the first thing is a variable or header, so that we can use its block when
2899 it is dynamic (useful for very large $message_headers, for example).
2900
2901 6. Lookups now cache *every* query, not just the most recent. A new, separate
2902 store pool is used for this. It can be recovered when all lookup caches are
2903 flushed. Lookups now release memory at the end of their result strings.
2904 This has involved some general refactoring of the lookup sources.
2905
2906 7. Some code has been added to the store_xxx() functions to reduce the amount
2907 of flapping under certain conditions.
2908
2909 8. log_incoming_interface used to affect only the <= reception log lines. Now
2910 it causes the local interface and port to be added to several more SMTP log
2911 lines, for example "SMTP connection from", and rejection lines.
2912
2913 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2914
291510. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2916
291711. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2918 could be overwritten at the end of the current message (or the start of a
2919 new message if it was set in a HELO ACL). The value is now preserved for
2920 the duration of the SMTP connection.
2921
292212. If a transport had a headers_rewrite setting, and a matching header line
2923 contained an unqualified address, that address was qualified, even if it
2924 did not match any rewriting rules. The underlying bug was that the values
2925 of the flags that permit the existence of unqualified sender and recipient
2926 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2927 non-local messages, and by -bnq for local messages) were not being
2928 preserved with the message after it was received.
2929
293013. When Exim was logging an SMTP synchronization error, it could sometimes log
2931 "next input=" as part of the text comprising the host identity instead of
2932 the correct text. The code was using the same buffer for two different
2933 strings. However, depending on which order the printing function evaluated
2934 its arguments, the bug did not always show up. Under Linux, for example, my
2935 test suite worked just fine.
2936
293714. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2938 doesn't work with some older versions of Perl. It has been changed to "my",
2939 which in any case is probably the better facility to use.
2940
294115. A really picky compiler found some instances of statements for creating
2942 error messages that either had too many or two few arguments for the format
2943 string.
2944
294516. The size of the buffer for calls to the DNS resolver has been increased
2946 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2947 for addresses that have a lot of PTR records. This alleviates a problem; it
2948 does not fully solve it.
2949
295017. A dnsdb lookup for PTR records that receives more data than will fit in the
2951 buffer now truncates the list and logs the incident, which is the same
2952 action as happens when Exim is looking up a host name and its aliases.
2953 Previously in this situation something unpredictable would happen;
2954 sometimes it was "internal error: store_reset failed".
2955
295618. If a server dropped the connection unexpectedly when an Exim client was
2957 using GnuTLS and trying to read a response, the client delivery process
2958 crashed while trying to generate an error log message.
2959
296019. If a "warn" verb in an ACL added multiple headers to a message in a single
2961 string, for example:
2962
2963 warn message = H1: something\nH2: something
2964
2965 the text was added as a single header line from Exim's point of view
2966 though it ended up OK in the delivered message. However, searching for the
2967 second and subsequent header lines using $h_h2: did not work. This has been
2968 fixed. Similarly, if a system filter added multiple headers in this way,
2969 the routers could not see them.
2970
297120. Expanded the error message when iplsearch is called with an invalid key to
2972 suggest using net-iplsearch in a host list.
2973
297421. When running tests using -bh, any delays imposed by "delay" modifiers in
2975 ACLs are no longer actually imposed (and a message to that effect is
2976 output).
2977
297822. If a "gecos" field in a passwd entry contained escaped characters, in
2979 particular, if it contained a \" sequence, Exim got it wrong when building
2980 a From: or a Sender: header from that name. A second bug also caused
2981 incorrect handling when an unquoted " was present following a character
2982 that needed quoting.
2983
298423. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2985 was not being matched caselessly.
2986
298724. Arranged for all hyphens in the exim.8 source to be escaped with
2988 backslashes.
2989
299025. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2991 properly. Recipient callout cache records were still being keyed to include
2992 the sender, even when use_sender was set false. This led to far more
2993 callouts that were necessary. The sender is no longer included in the key
2994 when use_sender is false.
2995
299626. Added "control = submission" modifier to ACLs.
2997
299827. Added the ${base62d: operator to decode base 62 numbers.
2999
300028. dnsdb lookups can now access SRV records.
3001
300229. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3003 the configuration file.
3004
300530. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3006 (-v) mode. This makes the output for a verbose queue run more intelligible.
3007
300831. Added a use_postmaster feature to recipient callouts.
3009
301032. Added the $body_zerocount variable, containing the number of binary zero
3011 bytes in the message body.
3012
301333. The time of last modification of the "new" subdirectory is now used as the
3014 "mailbox time last read" when there is a quota error for a maildir
3015 delivery.
3016
301734. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3018
301935. Added +ignore_unknown as a special item in host lists.
3020
302136. Code for decoding IPv6 addresses in host lists is now included, even if
3022 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3023 address was recognized as an IP address, but was then not correctly decoded
3024 into binary, causing unexpected and incorrect effects when compared with
3025 another IP address.
3026
3027
3028Exim version 4.34
3029-----------------
3030
3031 1. Very minor rewording of debugging text in manualroute to say "list of
3032 hosts" instead of "hostlist".
3033
3034 2. If verify=header_syntax was set, and a header line with an unqualified
3035 address (no domain) and a large number of spaces between the end of the
3036 name and the colon was received, the reception process suffered a buffer
3037 overflow, and (when I tested it) crashed. This was caused by some obsolete
3038 code that should have been removed. The fix is to remove it!
3039
3040 3. When running in the test harness, delay a bit after writing a bounce
3041 message to get a bit more predictability in the log output.
3042
3043 4. Added a call to search_tidyup() just before forking a reception process. In
3044 theory, someone could use a lookup in the expansion of smtp_accept_max_
3045 per_host which, without the tidyup, could leave open a database connection.
3046
3047 5. Added the variables $recipient_data and $sender_data which get set from a
3048 lookup success in an ACL "recipients" or "senders" condition, or a router
3049 "senders" option, similar to $domain_data and $local_part_data.
3050
3051 6. Moved the writing of debug_print from before to after the "senders" test
3052 for routers.
3053
3054 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3055 problems for message scanning, either using a data ACL, or using
3056 local_scan() because the Received: header was not generated till after they
3057 were called (in order to set the time as the time of reception completion).
3058 I have revised the way this works. The header is now generated after the
3059 body is received, but before the ACL or local_scan() are called. After they
3060 are run, the timestamp in the header is updated.
3061
3062
3063Exim version 4.33
3064-----------------
3065
3066 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3067 before starting a queue runner without re-exec. This happened only when
3068 deliver_drop_privilege was set or when the Exim user was set to root. The
3069 effect of the bug was that timeouts during subsequent deliveries caused
3070 crashes instead of being properly handled. The handler is now left at its
3071 default (and expected) setting.
3072
3073 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3074 message, again when deliver_drop_privilege is set or Exim is run as root.
3075 The bug described in (1) was not present in this case, but the tidying up
3076 of the other signals was missing. I have made the two cases consistent.
3077
3078 3. The ignore_target_hosts setting on a manualroute router was being ignored
3079 for hosts that were looked up using the /MX notation.
3080
3081 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3082 in domain lists.
3083
3084 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3085 operated on the sender address. After changing the $sender_address to <>
3086 for the sender address verify, Exim was re-instated it as the original
3087 (before rewriting) address, but remembering that it had rewritten it, so it
3088 wasn't rewriting it again. This bug also had the effect of breaking the
3089 sender address verification caching when the sender address was rewritten.
3090
3091 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3092 This has been changed so that if the ip literal address matches
3093 ignore_target_hosts, the router declines.
3094
3095 7. Added expansion conditions match_domain, match_address, and match_local_
3096 part (NOT match_host).
3097
3098 8. The placeholder for the Received: header didn't have a length field set.
3099
3100 9. Added code to Exim itself and to exim_lock to test for a specific race
3101 condition that could lead to file corruption when using MBX delivery. The
3102 issue is with the lockfile that is created in /tmp. If this file is removed
3103 after a process has opened it but before that process has acquired a lock,
3104 there is the potential for a second process to recreate the file and also
3105 acquire a lock. This could lead to two Exim processes writing to the file
3106 at the same time. The added code performs the same test as UW imapd; it
3107 checks after acquiring the lock that its file descriptor still refers to
3108 the same named file.
3109
311010. The buffer for building added header lines was of fixed size, 8192 bytes.
3111 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3112 when Exim is built.
3113
311411. Added the smtp_active_hostname option. If used, this will typically be made
3115 to depend on the incoming interface address. Because $interface_address is
3116 not set up until the daemon has forked a reception process, error responses
3117 that can happen earlier (such as "too many connections") no longer contain
3118 a host name.
3119
312012. If an expansion in a condition on a "warn" statement fails because a lookup
3121 defers, the "warn" statement is abandoned, and the next ACL statement is
3122 processed. Previously this caused the whole ACL to be aborted.
3123
312413. Added the iplsearch lookup type.
3125
312614. Added ident_timeout as a log selector.
3127
312815. Added tls_certificate_verified as a log selector.
3129
313016. Added a global option tls_require_ciphers (compare the smtp transport
3131 option of the same name). This controls incoming TLS connections.
3132
313317. I finally figured out how to make tls_require_ciphers do a similar thing
3134 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3135 before starting the TLS session.
3136
313718. Tabs are now shown as \t in -bP output.
3138
313919. If the log selector return_path_on_delivery was set, Exim crashed when
3140 bouncing a message because it had too many Received: header lines.
3141
314220. If two routers both had headers_remove settings, and the first one included
3143 a superfluous trailing colon, the final name in the first list and the
3144 first name in the second list were incorrectly joined into one item (with a
3145 colon in the middle).
3146
3147
3148Exim version 4.32
3149-----------------
3150
3151 1. Added -C and -D options to the exinext utility, mainly to make it easier
3152 to include in the automated testing, but these could be helpful when
3153 multiple configurations are in use.
3154
3155 2. The exinext utility was not formatting the output nicely when there was
3156 an alternate port involved in the retry record key, nor when there was a
3157 message id as well (for retries that were specific to a specific message
3158 and a specific host). It was also confused by IPv6 addresses, because of
3159 the additional colons they contain. I have fixed the IPv4 problem, and
3160 patched it up to do a reasonable job for IPv6.
3161
3162 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3163 delivery, the log line now contains "pipelined" if PIPELINING was used.
3164
3165 4. An SMTP transport process used to panic and die if the bind() call to set
3166 an explicit outgoing interface failed. This has been changed; it is now
3167 treated in the same way as a connect() failure.
3168
3169 5. A reference to $sender_host_name in the part of a conditional expansion
3170 that was being skipped was still causing a DNS lookup. This no longer
3171 occurs.
3172
3173 6. The def: expansion condition was not recognizing references to header lines
3174 that used bh_ and bheader_.
3175
3176 7. Added the _cache feature to named lists.
3177
3178 8. The code for checking quota_filecount in the appendfile transport was
3179 allowing one more file than it should have been.
3180
3181 9. For compatibility with Sendmail, the command line option
3182
3183 -prval:sval
3184
3185 is equivalent to
3186
3187 -oMr rval -oMs sval
3188
3189 and sets the incoming protocol and host name (for trusted callers). The
3190 host name and its colon can be omitted when only the protocol is to be set.
3191 Note the Exim already has two private options, -pd and -ps, that refer to
3192 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3193 "s", but I don't think that's a major issue.
3194
319510. A number of refactoring changes to the code, none of which should affect
3196 Exim's behaviour:
3197
3198 (a) The number of logging options was getting close to filling up the
3199 32-bit word that was used as a bit map. I have split them into two classes:
3200 those that are passed in the argument to log_write(), and those that are
3201 only ever tested independently outside of that function. These are now in
3202 separate 32-bit words, so there is plenty of room for expansion again.
3203 There is no change in the user interface or the logging behaviour.
3204
3205 (b) When building, for example, log lines, the code previously used a
3206 macro that called string_cat() twice, in order to add two strings. This is
3207 not really sufficiently general. Furthermore, there was one instance where
3208 it was actually wrong because one of the argument was used twice, and in
3209 one call a function was used. (As it happened, calling the function twice
3210 did not affect the overall behaviour.) The macro has been replaced by a
3211 function that can join an arbitrary number of extra strings onto a growing
3212 string.
3213
3214 (c) The code for expansion conditions now uses a table and a binary chop
3215 instead of a serial search (which was left over from when there were very
3216 few conditions). Also, it now recognizes conditions like "pam" even when
3217 the relevant support is not compiled in: a suitably worded error message is
3218 given if an attempt is made to use such a condition.
3219
322011. Added ${time_interval:xxxxx}.
3221
322212. A bug was causing one of the ddress fields not to be passed back correctly
3223 from remote delivery subprocesses. The field in question was not being
3224 subsequently used, so this caused to problems in practice.
3225
322613. Added new log selectors queue_time and deliver_time.
3227
322814. Might have fixed a bug in maildirsizefile handling that threw up
3229 "unexpected character" debug warnings, and recalculated the data
3230 unnecessarily. In any case, I expanded the warning message to give more
3231 information.
3232
323315. Added the message "Restricted characters in address" to the statements in
3234 the default ACL that block characters like @ and % in local parts.
3235
323616. Change 71 for release 4.31 proved to be much less benign that I imagined.
3237 Three changes have been made:
3238
3239 (a) There was a serious bug; a negative response to MAIL caused the whole
3240 recipient domain to be cached as invalid, thereby blocking all messages
3241 to all local parts at the same domain, from all senders. This bug has
3242 been fixed. The domain is no longer cached after a negative response to
3243 MAIL if the sender used is not empty.
3244
3245 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3246 been restored.
3247
3248 (c) A new callout option, "use_sender" has been added for people who want
3249 the modified behaviour.
3250
3251
3252Exim version 4.31
3253-----------------
3254
3255 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3256 Larry Rosenman.
3257
3258 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3259 indeed breaks things for older releases.
3260
3261 3. Added additional logging to the case where there is a problem reading data
3262 from a filter that is running in a subprocess using a pipe, in order to
3263 try to track down a specific problem.
3264
3265 4. Testing facility fudge: when running in the test harness and attempting
3266 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3267 getting "No route to host". Convert this to a timeout.
3268
3269 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3270 warning.
3271
3272 6. Some OS don't have socklen_t but use size_t instead. This affects the
3273 fifth argument of getsockopt() amongst other things. This is now
3274 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3275 can be set for individual OS. I have set it for SunOS5, OSF1, and
3276 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3277 some earlier ones do not.
3278
3279 7. Change 4.30/15 was not doing the test caselessly.
3280
3281 8. The standard form for an IPv6 address literal was being rejected by address
3282 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3283 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3284 this, as well as the form without the "IPv6" on the front (but only when
3285 address literals are enabled, of course).
3286
3287 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3288
328910. Exim crashed if a message with an empty sender address specified by -f
3290 encountered a router with an errors_to setting. This could be provoked only
3291 by a command such as
3292
3293 exim -f "" ...
3294
3295 where an empty string was supplied; "<>" did not hit this bug.
3296
329711. Installed PCRE release 4.5.
3298
329912. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3300 remained set. It is now erased.
3301
330213. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3303 times from message ids (which are base 36 rather than the normal 62).
3304
330514. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3306 were being counted as actual protocol errors, and logged if the log
3307 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3308 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3309 and DATA following a set of rejected RCPTs do not count as protocol errors.
3310 In other words, Exim assumes they were pipelined, though this may not
3311 actually be the case. Of course, in all cases the client gets an
3312 appropriate error code.
3313
331415. If a lookup fails in an ACL condition, a message about the failure may
3315 be available; it is used if testing the ACL cannot continue, because most
3316 such messages specify what the cause of the deferral is. However, some
3317 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3318 that caused an old message to be retained and used if a later statement
3319 caused a defer, replacing the real cause of the deferral.
3320
332116. If an IP address had so many PTR records that the DNS lookup buffer
3322 was not large enough to hold them, Exim could crash while trying to process
3323 the truncated data. It now detects and logs this case.
3324
332517. Further to 4.21/58, another change has been made: if (and only if) the
3326 first line of a message (the first header line) ends with CRLF, a bare LF
3327 in a subsequent header line has a space inserted after it, so as not to
3328 terminate the header.
3329
333018. Refactoring: tidied an ugly bit of code in appendfile that copied data
3331 unnecessarily, used atoi() instead of strtol(), and didn't check the
3332 termination when getting file sizes from file names by regex.
3333
333419. Completely re-implemented the support for maildirsize files, in the light
3335 of a number of problems with the previous contributed implementation
3336 (4.30/29). In particular:
3337
3338 . If the quota is zero, the maildirsize file is maintained, but no quota is
3339 imposed.
3340
3341 . If the maildir directory does not exist, it is created before any attempt
3342 to write a maildirsize file.
3343
3344 . The quota value in the file is just a cache; if the quota is changed in
3345 the transport, the new value overrides.
3346
3347 . A regular expression is available for excluding directories from the
3348 count.
3349
335020. The autoreply transport checks the characters in options that define the
3351 message's headers; it allows continued headers, but it was checking with
3352 isspace() after an embedded newline instead of explicitly looking for a
3353 space or a tab.
3354
335521. If all the "regular" hosts to which an address was routed had passed their
3356 expiry times, and had not reached their retry times, the address was
3357 bounced, even if fallback hosts were defined. Now Exim should go on to try
3358 the fallback hosts.
3359
336022. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3361 equivalent code in the SMTP transport. Some hosts send humungous responses
3362 to HELO/EHLO, more than 1024 it seems.
3363
336423. Refactoring: code in filter.c used (void *) for "any old type" but this
3365 gives compiler warnings in some environments. I've now done it "properly",
3366 using a union.
3367
336824. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3369 (because of problems with the built-in one) was declared to return uschar *
3370 instead of char *, causing compiler failure.
3371
337225. Fixed a file descriptor leak when processing alias/forward files.
3373
337426. Fixed a minor format string issue in dbfn.c.
3375
337627. Typo in exim.c: ("dmbnz" for "dbmnz").
3377
337828. If a filter file refered to $h_xxx or $message_headers, and the headers
3379 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3380 become corrupted.
3381
338229. When a sender address is verified, it is cached, to save repeating the test
3383 when there is more than one recipient in a message. However, when the
3384 verification involves a callout, it is possible for different callout
3385 options to be set for different recipients. It is too complicated to keep
3386 track of this in the cache, so now Exim always runs a verification when a
3387 callout is required, relying on the callout cache for the optimization.
3388 The overhead is duplication of the address routing, but this should not be
3389 too great.
3390
339130. Fixed a bug in callout caching. If a RCPT command caused the sender address
3392 to be verified with callout=postmaster, and the main callout worked but the
3393 postmaster check failed, the verification correctly failed. However, if a
3394 subsequent RCPT command asked for sender verification *without* the
3395 postmaster check, incorrect caching caused this verification also to fail,
3396 incorrectly.
3397
339831. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3399 it was not caching the DNS options (qualify_single, search_parents) that
3400 were used when the lookup failed. A subsequent lookup with different
3401 options therefore always gave the same answer, though there were cases
3402 where it should not have. (Example: a "domains = !$mx_any" option on a
3403 dnslookup router: the "domains" option is always processed without any
3404 widening, but the router might have qualify_single set.) Now Exim uses the
3405 cached value only when the same options are set.
3406
340732. Added John Jetmore's "exipick" utility to the distribution.
3408
340933. GnuTLS: When an attempt to start a TLS session fails for any reason other
3410 than a timeout (e.g. a certificate is required, and is not provided), an
3411 Exim server now closes the connection immediately. Previously it waited for
3412 the client to close - but if the client is SSL, it seems that they each
3413 wait for each other, leading to a delay before one of them times out.
3414
341534: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3416 maintained 0.8.x compatibility because I don't think many are using it, and
3417 it is clearly obsolete.
3418
341935. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3420 transport.
3421
342236. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3423 client certificate was expired. A simple patch fixes this, though I don't
3424 understand the full logic of why the verify callback is called multiple
3425 times.
3426
342737. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3428 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3429 which causes problems with some clients (such as the Certicom SSL Plus
3430 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3431 disables the coutermeasure allowing Eudora to connect."
3432
343338. Exim was not checking that a write() to a log file succeeded. This could
3434 lead to Bad Things if a log got too big, in particular if it hit a file
3435 size limit. Exim now panics and dies if it cannot write to a log file, just
3436 as it does if it cannot open a log file.
3437
343839. Modified OS/Makefile-Linux so that it now contains
3439
3440 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3441
3442 The two -D definitions ensure that Exim is compiled with large file
3443 support, which makes it possible to handle log files that are bigger than
3444 2^31.
3445
344640. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3447 instance) a domain was checked against a named list that involved a lookup,
3448 causing $domain_data to be set, then another domain was checked against the
3449 same list, then the first domain was re-checked, the value of $domain_data
3450 after the final check could be wrong. In particular, if the second check
3451 failed, it could be set empty. This bug probably also applied to
3452 $localpart_data.
3453
345441. The strip_trailing_dot option was not being applied to the address given
3455 with the -f command-line option.
3456
345742. The code for reading a message's header from the spool was incrementing
3458 $received_count, but never initializing it. This meant that the value was
3459 incorrect (doubled) while delivering a message in the same process in which
3460 it was received. In the most common configuration of Exim, this never
3461 happens - a fresh exec is done - but it can happen when
3462 deliver_drop_privilege is set.
3463
346443. When Exim logs an SMTP synchronization error - client data sent too soon -
3465 it now includes up to 150 characters of the unexpected data in the log
3466 line.
3467
346844. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3469 and building data strings. The size of both of these buffers was 10 000
3470 bytes - far larger than anybody would *ever* want, thought I. Needless to
3471 say, somebody hit the limit. I have increased the maximum line length to
3472 20 000 and the maximum data length of concatenated lines to 100 000. I have
3473 also fixed two bugs, because there was no checking on these buffers. Tsk,
3474 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3475 buffer is too small.
3476
347745. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3478 lsearch lookups. Now it does.
3479
348046. When parsing a route_list item in a manualroute router, a fixed-length
3481 buffer was used for the list of hosts. I made this 1024 bytes long,
3482 thinking that nobody would ever have a list of hosts that long. Wrong.
3483 Somebody had a whole pile of complicated expansion conditions, and the
3484 string was silently truncated, leading to an expansion error. It turns out
3485 that it is easier to change to an unlimited length (owing to other changes
3486 that have happened since this code was originally written) than to build
3487 structure for giving a limitation error. The length of the item that
3488 expands into the list of hosts is now unlimited.
3489
349047. The lsearch lookup could not handle data where the length of text line was
3491 more than 4095 characters. Such lines were truncated, leading to shortened
3492 data being returned. It should now handle lines of any length.
3493
349448. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3495 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3496 ACL").
3497
349849. Cosmetic tidy to scripts like exicyclog that are generated by globally
3499 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3500 no longer happens in comment lines. A list of replacements is now placed
3501 at the head of all of the source files, except those whose only change is
3502 to replace PERL_COMMAND in the very first #! line.
3503
350450. Replaced the slow insertion sort in queue.c, for sorting the list of
3505 messages on the queue, with a bottom-up merge sort, using code contributed
3506 by Michael Haardt. This should make operations like -bp somewhat faster on
3507 large queues. It won't affect queue runners, except when queue_run_in_order
3508 is set.
3509
351051. Installed eximstats 1.31 in the distribution.
3511
351252. Added support for SRV lookups to the dnslookup router.
3513
351453. If an ACL referred to $message_body or $message_body_end, the value was not
3515 reset for any messages that followed in the same SMTP session.
3516
351754. The store-handling optimization for building very long strings was not
3518 differentiating between the different store pools. I don't think this
3519 actually made any difference in practice, but I've tidied it.
3520
352155. While running the routers to verify a sender address, $sender_address
3522 was still set to the sender address. This is wrong, because when routing to
3523 send a bounce to the sender, it would be empty. Therefore, I have changed
3524 it so that, while verifying a sender address, $sender_address is set to <>.
3525 (There is no change to what happens when verifying a recipient address.)
3526
352756. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3528 target A or AAAA records (if not already returned) without resetting the
3529 qualify_single or search_parents options of the DNS resolver. These are
3530 inappropriate in this case because the targets of MX and SRV records must
3531 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3532 target that, when qualified, matched something in the local domain. These
3533 two options are now turned off when doing these lookups.
3534
353557. It seems that at least some releases of Reiserfs (which does not have the
3536 concept of a fixed number of inodes) returns zero and not -1 for the
3537 number of available inodes. This interacted badly with check_spool_inodes,
3538 which assumed that -1 was the "no such thing" setting. What I have done is
3539 to check that the total number of inodes is greater than zero before doing
3540 the test of how many are available.
3541
354258. When a "warn" ACL statement has a log_message modifier, the message is
3543 remembered, and not repeated. This is to avoid a lot of repetition when a
3544 message has many recipients that cause the same warning to be written.
3545 Howewer, Exim was preserving the list of already written lines for an
3546 entire SMTP session, which doesn't seem right. The memory is now reset if a
3547 new message is started.
3548
354959. The "rewrite" debugging flag was not showing the result of rewriting in the
3550 debugging output unless log_rewrite was also set.
3551
355260. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3553 of (int)(handle) when we know that handle contains (void *)(-1).
3554
355561. The Exim daemon panic-logs an error return when it closes the incoming
3556 connection. However "connection reset by peer" seems to be common, and
3557 isn't really an error worthy of noting specially, so that particular error
3558 is no long logged.
3559
356062. When Exim is trying to find all the local interfaces, it used to panic and
3561 die if the ioctl to get the interface flags failed. However, it seems that
3562 on at least one OS (Solaris 9) it is possible to have an interface that is
3563 included in the list of interfaces, but for which you get a failure error
3564 for this call. This happens when the interface is not "plumbed" into a
3565 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3566 failure of the "get flags" call assumes that the interface is down.
3567
356863. Added a ${eval10: operator, which assumes all numbers are decimal. This
3569 makes life easier for people who are doing arithmetic on fields extracted
3570 from dates, where you often get leading zeros that should not be
3571 interpreted as octal.
3572
357364. Added qualify_domain to the redirect router, to override the global
3574 setting.
3575
357665. If a pathologically long header line contained very many addresses (the
3577 report of this problem mentioned 10 000) and each of them was rewritten,
3578 Exim could use up a very large amount of memory. (It kept on making new
3579 copies of the header line as it rewrote, and never released the old ones.)
3580 At the expense of a bit more processing, the header rewriting function has
3581 been changed so that it no longer eats memory in this way.
3582
358366. The generation of the Received: header has been moved from the time that a
3584 message starts to be received, to the time that it finishes. The timestamp
3585 in the Received: header should now be very close to that of the <= log
3586 line. There are two side-effects of this change:
3587
3588 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the