Split long fakereject and fakedefer messages.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
e28326d8 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.474 2007/02/07 11:24:56 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
b4ed4da0 94
5dd1517f
PH
95Exim version 4.66
96-----------------
97
98PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
99 fixed by 4.65/MH/01 (is this a record?) are fixed:
100
101 (i) An empty string was always treated as zero by the numeric comparison
102 operators. This behaviour has been restored.
103
104 (ii) It is documented that the numeric comparison operators always treat
105 their arguments as decimal numbers. This was broken in that numbers
106 starting with 0 were being interpreted as octal.
107
108 While fixing these problems I realized that there was another issue that
109 hadn't been noticed. Values of message_size_limit (both the global option
110 and the transport option) were treated as octal if they started with 0.
111 The documentation was vague. These values are now always treated as
112 decimal, and I will make that clear in the documentation.
113
114
93cfa765
TK
115Exim version 4.65
116-----------------
117
118TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
119 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
120 versions. (#438)
121
d6066548
MH
122MH/01 Don't check that the operands of numeric comparison operators are
123 integers when their expansion is in "skipping" mode (fixes bug
124 introduced by 4.64-PH/07).
125
4362ff0d
PH
126PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
127 child addresses, Exim now panics and dies. Previously, because the count
128 is held in a short int, deliveries were likely to be lost. As such a
129 large number of recipients for a single message is ridiculous
130 (performance will be very, very poor), I have chosen to impose a limit
131 rather than extend the field.
132
93cfa765 133
944e9e9c
TF
134Exim version 4.64
135-----------------
aa41d2de 136
21d74bd9
TK
137TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
138 leftover -K file (the existence of which was triggered by #402).
139 While we were at it, introduced process PID as part of the -K
140 filename. This should rule out race conditions when creating
141 these files.
142
143TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
144 processing considerably. Previous code took too long for large mails,
145 triggering a timeout which in turn triggers #401.
146
147TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
148 in the DK code in transports.c. sendfile() is not really portable,
149 hence the _LINUX specificness.
944e9e9c
TF
150
151TF/01 In the add_headers option to the mail command in an Exim filter,
152 there was a bug that Exim would claim a syntax error in any
153 header after the first one which had an odd number of characters
154 in the field name.
155
2b1c6e3a
PH
156PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
157 callout verification, Exim cached a "reject" for the entire domain. This
158 is correct for most verifications, but it is not correct for a recipient
159 verification with use_sender or use_postmaster set, because in that case
160 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
161 case of MAIL FROM:<> rejection from other early rejections (e.g.
162 rejection of HELO). When verifying a recipient using a non-null MAIL
163 address, the cache is ignored if it shows MAIL FROM:<> rejection.
164 Whatever the result of the callout, the value of the domain cache is
165 left unchanged (for any other kind of callout, getting as far as trying
166 RCPT means that the domain itself is ok).
167
1f872c80
PH
168PH/02 Tidied a number of unused variable and signed/unsigned warnings that
169 gcc 4.1.1 threw up.
170
171PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
172 manifest itself as EPIPE rather than ECONNECT. When tidying away a
173 session, the daemon ignores ECONNECT errors and logs others; it now
174 ignores EPIPE as well.
175
d203e649
PH
176PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
177 (quoted-printable decoding).
178
cc2ed8f7 179PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 180 later the small subsequent patch to fix an introduced bug.
f951fd57 181
ddfcd446
PH
182PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
183
d45b1de8
PH
184PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
185
186PH/08 An error is now given if message_size_limit is specified negative.
187
38a0a95f 188PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 189 to be given (somewhat) arbitrary names.
38a0a95f 190
a2405d83
JJ
191JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
192 in 4.64-PH/09.
193
194JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
195 miscellaneous code fixes
196
6ea85e9a
PH
197PH/10 Added the log_reject_target ACL modifier to specify where to log
198 rejections.
199
26da7e20
PH
200PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
201 hostname. This is wrong, because it relates to the incoming message (and
202 probably the interface on which it is arriving) and not to the outgoing
203 callout (which could be using a different interface). This has been
204 changed to use the value of the helo_data option from the smtp transport
205 instead - this is what is used when a message is actually being sent. If
206 there is no remote transport (possible with a router that sets up host
207 addresses), $smtp_active_hostname is used.
6ea85e9a 208
14aa5a05 209PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 210 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
211 (a) The code assumed that strncpy() returns a negative number on buffer
212 overflow, which isn't the case. Replaced with Exim's string_format()
213 function.
214 (b) There were several signed/unsigned issues. I just did the minimum
215 hacking in of casts. There is scope for a larger refactoring.
216 (c) The code used strcasecmp() which is not a standard C function.
217 Replaced with Exim's strcmpic() function.
218 (d) The code set only $1; it now sets $auth1 as well.
219 (e) A simple test gave the error "authentication client didn't specify
220 service in request". It would seem that Dovecot has changed its
221 interface. Fortunately there's a specification; I followed it and
222 changed what the client sends and it appears to be working now.
223
ff75a1f7
PH
224PH/13 Added $message_headers_raw to provide the headers without RFC 2047
225 decoding.
226
e6f6568e
PH
227PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
228 address A is aliased to B and C, where B exists and C does not. Without
229 -v the output is "A verified" because verification stops after a
230 successful redirection if more than one address is generated. However,
231 with -v the child addresses are also verified. Exim was outputting "A
232 failed to verify" and then showing the successful verification for C,
233 with its parentage. It now outputs "B failed to verify", showing B's
234 parentage before showing the successful verification of C.
235
d6f6e0dc
PH
236PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
237 look up a TXT record in a specific list after matching in a combined
238 list.
239
322050c2
PH
240PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
241 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
242 they consult the DNS. I had assumed they would set it the way they
243 wanted; and indeed my experiments on Linux seem to show that in some
244 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
245 To be on the safe side, however, I have now made the interface to
246 host_find_byname() similar to host_find_bydns(), with an argument
247 containing the DNS resolver options. The host_find_byname() function now
248 sets these options at its start, just as host_find_bydns() does. The smtp
249 transport options dns_qualify_single and dns_search_parents are passed to
250 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
251 of host_find_byname() use the default settings of RES_DEFNAMES
252 (qualify_single) but not RES_DNSRCH (search_parents).
253
08955dd3
PH
254PH/17 Applied (a modified version of) Nico Erfurth's patch to make
255 spool_read_header() do less string testing, by means of a preliminary
256 switch on the second character of optional "-foo" lines. (This is
257 overdue, caused by the large number of possibilities that now exist.
258 Originally there were few.) While I was there, I also converted the
259 str(n)cmp tests so they don't re-test the leading "-" and the first
260 character, in the hope this might squeeze out yet more improvement.
261
1eccaa59
PH
262PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
263 flag allowing group syntax was set by the header_syntax check but not
264 turned off, possible causing trouble later; (2) The flag was not being
265 set at all for the header_verify test, causing "group"-style headers to
266 be rejected. I have now set it in this case, and also caused header_
267 verify to ignore an empty address taken from a group. While doing this, I
268 came across some other cases where the code for allowing group syntax
269 while scanning a header line wasn't quite right (mostly, not resetting
270 the flag correctly in the right place). These bugs could have caused
271 trouble for malformed header lines. I hope it is now all correct.
272
602e59e5
PH
273PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
274 with the "reply" argument non-NULL. The code, however (which originally
275 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
276 but it didn't always do it. This confused somebody who was copying the
277 code for some other use. I have removed all the tests.
278
411ef850
PH
279PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
280 feature that was used to support insecure browsers during the U.S. crypto
281 embargo. It requires special client support, and Exim is probably the
282 only MTA that supported it -- and would never use it because real RSA is
283 always available. This code has been removed, because it had the bad
284 effect of slowing Exim down by computing (never used) parameters for the
285 RSA_EXPORT functionality.
286
7befa435
PH
287PH/21 On the advice of Timo Sirainen, added a check to the dovecot
288 authenticator to fail if there's a tab character in the incoming data
289 (there should never be unless someone is messing about, as it's supposed
290 to be base64-encoded). Also added, on Timo's advice, the "secured" option
291 if the connection is using TLS or if the remote IP is the same as the
292 local IP, and the "valid-client-cert option" if a client certificate has
293 been verified.
294
48da4259 295PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
296 authenticators. This can be used for authorization after authentication
297 succeeds. (In the case of plaintext, it servers for both authentication
298 and authorization.)
299
48da4259
PH
300PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
301 if any retry times were supplied.
302
d1d5595c
PH
303PH/24 Exim crashed if verify=helo was activated during an incoming -bs
304 connection, where there is no client IP address to check. In this
305 situation, the verify now always succeeds.
306
0ef732d9
PH
307PH/25 Applied John Jetmore's -Mset patch.
308
328895cc
PH
309PH/26 Added -bem to be like -Mset, but loading a message from a file.
310
fd700877
PH
311PH/27 In a string expansion for a processed (not raw) header when multiple
312 headers of the same name were present, leading whitespace was being
313 removed from all of them, but trailing whitespace was being removed only
314 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
315 before concatenation. Completely empty headers in a concatenation (as
316 before) are ignored.
fd700877 317
8dce1a6f
PH
318PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
319 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
320
17af4a17
PH
321PH/29 [Removed. This was a change that I later backed out, and forgot to
322 correct the ChangeLog entry (that I had efficiently created) before
323 committing the later change.]
f6c332bd
PH
324
325PH/30 Exim was sometimes attempting to deliver messages that had suffered
326 address errors (4xx response to RCPT) over the same connection as other
327 messages routed to the same hosts. Such deliveries are always "forced",
328 so retry times are not inspected. This resulted in far too many retries
329 for the affected addresses. The effect occurred only when there were more
330 hosts than the hosts_max_try setting in the smtp transport when it had
331 the 4xx errors. Those hosts that it had tried were not added to the list
332 of hosts for which the message was waiting, so if all were tried, there
333 was no problem. Two fixes have been applied:
334
335 (i) If there are any address or message errors in an SMTP delivery, none
336 of the hosts (tried or untried) are now added to the list of hosts
337 for which the message is waiting, so the message should not be a
338 candidate for sending over the same connection that was used for a
339 successful delivery of some other message. This seems entirely
340 reasonable: after all the message is NOT "waiting for some host".
341 This is so "obvious" that I'm not sure why it wasn't done
342 previously. Hope I haven't missed anything, but it can't do any
343 harm, as the worst effect is to miss an optimization.
344
345 (ii) If, despite (i), such a delivery is accidentally attempted, the
346 routing retry time is respected, so at least it doesn't keep
347 hammering the server.
348
c1114884
PH
349PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
350 in ${readsocket because some servers need this prod.
351
7a0743eb
PH
352PH/32 Added some extra debug output when updating a wait-xxx database.
353
0d85fa3f
PH
354PH/33 The hint "could be header name not terminated by colon", which has been
355 given for certain expansion errors for a long time, was not being given
356 for the ${if def:h_colon_omitted{... case.
357
1bf43b78
PH
358PH/34 The spec says: "With one important exception, whenever a domain list is
359 being scanned, $domain contains the subject domain." There was at least
360 one case where this was not true.
361
520de300
PH
362PH/35 The error "getsockname() failed: connection reset by peer" was being
363 written to the panic log as well as the main log, but it isn't really
364 panic-worthy as it just means the connection died rather early on. I have
365 removed the panic log writing for the ECONNRESET error when getsockname()
366 fails.
367
48c7f9e2
PH
368PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
369 runs only) independently of the message's sender address. This meant
370 that, if the 4xx error was in fact related to the sender, a different
371 message to the same recipient with a different sender could confuse
372 things. In particualar, this can happen when sending to a greylisting
373 server, but other circumstances could also provoke similar problems.
374 I have changed the default so that the retry time for these errors is now
375 based a combination of the sender and recipient addresses. This change
376 can be overridden by setting address_retry_include_sender=false in the
377 smtp transport.
378
99ea1c86
PH
379PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
380 remote server are returned as part of bounce messages. This was not
381 happening for LMTP over a pipe (the lmtp transport), but now it is the
382 same for both kinds of LMTP.
383
a2042e78
PH
384PH/38 Despite being documented as not happening, Exim was rewriting addresses
385 in header lines that were in fact CNAMEs. This is no longer the case.
386
4fbcfc2e
PH
387PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
388 and queue runs started by the daemon processed all messages. This has
389 been fixed so that -R and -S can now usefully be given with -q<time>.
390
aa41d2de
PH
391PH/40 Import PCRE release 6.7 (fixes some bugs).
392
af561417
PH
393PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
394
3cc66b45
PH
395PH/42 Give an error if -q is specified more than once.
396
194cc0e4
PH
397PH/43 Renamed the variables $interface_address and $interface_port as
398 $received_ip_address and $received_port, to make it clear that these
399 values apply to message reception, and not to the outgoing interface when
400 a message is delivered. (The old names remain recognized, of course.)
401
a401ddaa
PH
402PH/44 There was no timeout on the connect() call when using a Unix domain
403 socket in the ${readsocket expansion. There now is.
404
4e88a19f
PH
405PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
406 be meaningful with "accept".
407
d7d7b289
SC
408SC/01 Eximstats V1.43
409 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
410
411SC/02 Eximstats V1.44
412 Use a glob alias rather than an array ref in the generated
413 parser. This improves both readability and performance.
414
415SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
416 Collect SpamAssassin and rejection statistics.
417 Don't display local sender or destination tables unless
418 there is data to show.
419 Added average volumes into the top table text output.
420
421SC/04 Eximstats V1.46
422 Collect data on the number of addresses (recipients)
423 as well as the number of messages.
424
425SC/05 Eximstats V1.47
426 Added 'Message too big' to the list of mail rejection
427 reasons (thanks to Marco Gaiarin).
428
429SC/06 Eximstats V1.48
430 Mainlog lines which have GMT offsets and are too short to
431 have a flag are now skipped.
432
433SC/07 Eximstats V1.49 (Alain Williams)
434 Added the -emptyok flag.
435
436SC/08 Eximstats V1.50
437 Fixes for obtaining the IP address from reject messages.
438
0ea2a468
JJ
439JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
440 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
441 whitesspace changes from 4.64-PH/27
442
443JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
444 match 4.64-PH/13
445
446JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
447 are found, allow negative numbers in numeric criteria)
448
449JJ/06 exipick.20061117.2, added new $message_body_missing variable
450
451JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
452 to match changes made in 4.64-PH/43
453
8a10f5a4
PH
454PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
455
30e18802
PH
456PH/47 Put in an explicit test for a DNS lookup of an address record where the
457 "domain" is actually an IP address, and force a failure. This locks out
458 those revolvers/nameservers that support "A-for-A" lookups, in
459 contravention of the specifications.
460
55728a4f
PH
461PH/48 When a host name was looked up from an IP address, and the subsequent
462 forward lookup of the name timed out, the host name was left in
463 $sender_host_name, contrary to the specification.
d7d7b289 464
d7837193
PH
465PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
466 restricted to single-key lookups, Exim was not diagnosing an error if
467 * or *@ was used with a query-style lookup.
468
87054a31
PH
469PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
470
ea2c01d2
MH
471MH/01 local_scan ABI version incremented to 1.1. It should have been updated
472 long ago, but noone interested enough thought of it. Let's just say that
473 the "1.1" means that there are some new functions that weren't there at
474 some point in the past.
475
e4fa6968
PH
476PH/51 Error processing for expansion failure of helo_data from an smtp
477 transport during callout processing was broken.
478
56f5d9bd
PH
479PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
480 tested/used via the -bh/-bhc/-bs options.
481
922e1c28
PH
482PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
483 bug, fixed in subsequent PCRE releases).
484
21eb6e72
PH
485PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
486 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
487
a0540757
PH
488PH/55 Check for a ridiculously long file name in exim_dbmbuild.
489
944e9e9c 490
478be7b0
SC
491Exim version 4.63
492-----------------
493
494SC/01 Use a glob alias rather than an array ref in eximstats generated
495 parser. This improves both readability and performance.
496
497SC/02 Collect SpamAssassin and rejection statistics in eximstats.
498 Don't display local sender or destination tables in eximstats unless
499 there is data to show.
500 Added average volumes into the eximstats top table text output.
501
502SC/03 Collect data on the number of addresses (recipients) as well
503 as the number of messages in eximstats.
504
2b965a65
TF
505TF/01 Correct an error in the documentation for the redirect router. Exim
506 does (usually) call initgroups() when daemonizing.
478be7b0 507
45b91596
PH
508TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
509 with consistent privilege compared to when running as a daemon.
478be7b0 510
c59f5781
TF
511TF/03 Note in the spec that $authenticated_id is not set for local
512 submissions from trusted users.
513
90fc3069
TF
514TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
515 Thanks to Dean Brooks <dean@iglou.com> for the patch.
516
6083aca0
TF
517TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
518 by adding some example configuration directives to the default
519 configuration file. A little bit of work is required to uncomment the
520 directives and define how usernames and passwords are checked, but
521 there is now a framework to start from.
522
765b530f
PH
523PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
524 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
525 without this. I don't know how relevant this is to other LDAP libraries.
526
4e167a8c
PH
527PH/02 Add the verb name to the "unknown ACL verb" error.
528
4608d683
PH
529PH/03 Magnus Holmgren's patch for filter_prepend_home.
530
b8dc3e4a
PH
531PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
532
5418e93b
PH
533PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
534 directory not expanded when it should be if an expanded home directory
535 was set for the address (which is overridden by the transport).
536
b4a9bda2
PH
537PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
538 libradius.
539
45b91596
PH
540PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
541 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
542 because it is too late at that time, and has no effect.
543
5547e2c5
PH
544PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
545 security issue with \' (bugzilla #107). I could not use the
546 PQescapeStringConn() function, because it needs a PGconn value as one of
547 its arguments.
548
dbcef0ea
PH
549PH/08 When testing addresses using -bt, indicate those final addresses that
550 are duplicates that would not cause an additional delivery. At least one
551 person was confused, thinking that -bt output corresponded to deliveries.
552 (Suppressing duplicates isn't a good idea as you lose the information
553 about possibly different redirections that led to the duplicates.)
554
25257489
PH
555PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
556 systems where poll() doesn't work, in particular OS X.
557
c816d124
PH
558PH/10 Added more information to debugging output for retry time not reached.
559
a9ccd69a
PH
560PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
561 operations in malware.c.
562
75fa1910
PH
563PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
564 signatures.
565
a7d7aa58
PH
566PH/13 If write_rejectlog was set false when logging was sent to syslog with
567 syslog_duplication set false, log lines that would normally be written
568 both the the main log and to the reject log were not written to syslog at
569 all.
570
42119b09
PH
571PH/14 In the default configuration, change the use of "message" in ACL warn
572 statements to "add_header".
573
41609df5
PH
574PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
575 not followed by a command (e.g. "seen endif").
576
a5bd321b
PH
577PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
578 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
579 latter.
580
e85a7ad5 581PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
582 so that it is now:
583
e85a7ad5
PH
584 ${if or { \
585 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
586 { match{$h_precedence:}{(?i)bulk|list|junk} } \
587 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
588 }{no}{yes}}
589
e85a7ad5
PH
590 The Auto-Submitted: and various List- headers are standardised, whereas I
591 don't think Precedence: ever was.
5dff5817 592
d8fe1c03
PH
593PH/18 Refactored debugging code in route_finduser() to show more information,
594 in particular, the error code if getpwnam() issues one.
595
16282d2b
PH
596PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
597 This is apparently needed in addition to the PH/07 change above to avoid
598 any possible encoding problems.
599
35d40a98
PH
600PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
601 but not after initializing Perl.
602
034d99ab
PH
603PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
604 output them only if debugging. By default they are written stderr,
605 apparently, which is not desirable.
606
6ec97b1b
PH
607PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
608 queries.
609
e22ca4ac
JJ
610JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
611 --not options
612
613JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
614
33d73e3b
PH
615PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
616 authenticated or an ident call has been made. Suppress the default
617 values for $authenticated_id and $authenticated_sender (but permit -oMai
618 and -oMas) when testing with -bh.
619
9ecb03f3
PH
620PH/24 Re-jigged the order of the tests in the default configuration so that the
621 tests for valid domains and recipients precede the DNS black list and CSA
622 tests, on the grounds that those ones are more expensive.
623
084efe8d
PH
624PH/25 Exim was not testing for a space following SMTP commands such as EHLO
625 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
626 This bug exists in every version of Exim that I still have, right back to
627 0.12.
628
366fc9f0
PH
629PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
630 However, an attempt to turn on case-sensitivity in a regex key by
631 including (?-i) didn't work because the subject string was already
632 lowercased, and the effects were non-intuitive. It turns out that a
633 one-line patch can be used to allow (?-i) to work as expected.
634
c59f5781 635
c887c79e
TF
636Exim version 4.62
637-----------------
638
639TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
640 other effects) broke the use of negated acl sub-conditions.
641
1cce3af8
PH
642PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
643 patch).
644
afb3eaaf
PH
645PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
646 "Deny" causes Exim to reject the incoming connection with a 554 error.
647 Unfortunately, if there is a major crisis, such as a disk failure,
648 tcp-wrappers gives "deny", whereas what one would like would be some
649 kind of temporary error. A kludge has been added to help with this.
650 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
651 554 error is used if errno is still zero or contains ENOENT (which occurs
652 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
653 451 error is used.
654
e173618b
PH
655PH/03 Add -lutil to the default FreeBSD LIBS setting.
656
dd16e114
PH
657PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
658 errors. Otherwise a message that provokes a temporary error (when other
659 messages do not) can cause a whole host to time out.
660
f7fd3850
PH
661PH/05 Batch deliveries by appendfile and pipe transports did not work when the
662 addresses were routed directly to files or pipes from a redirect router.
663 File deliveries just didn't batch; pipe deliveries might have suffered
664 odd errors.
665
d87df92c
PH
666PH/06 A failure to get a lock for a hints database would erroneously always say
667 "Failed to get write lock", even when it was really a read lock.
668
7e9f683d
PH
669PH/07 The appendfile transport was creating MBX lock files with a fixed mode
670 of 0600. This has been changed to use the value of the lockfile_mode
671 option (which defaults to 0600).
672
bfad5236
PH
673PH/08 Applied small patch from the Sieve maintainer.
674
01c490df
PH
675PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
676 folder from quota calculations, a direct delivery into this folder messed
677 up the contents of the maildirsize file. This was because the regex was
678 used only to exclude .Trash (or whatever) when the size of the mailbox
679 was calculated. There was no check that a delivery was happening into an
680 excluded directory. This bug has been fixed by ignoring all quota
681 processing for deliveries into excluded directories.
682
d6629cdc
PH
683PH/10 Added the maildirfolder_create_regex option to appendfile.
684
1cce3af8 685
214e2000
PH
686Exim version 4.61
687-----------------
688
689PH/01 The code for finding all the local interface addresses on a FreeBSD
690 system running IPv6 was broken. This may well have applied to all BSD
691 systems, as well as to others that have similar system calls. The broken
692 code found IPv4 interfaces correctly, but gave incorrect values for the
693 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
694 that it would not match correctly against @[] and not recognize the IPv6
695 addresses as local.
696
f9daeae0
PH
697PH/02 The ipliteral router was not recognizing addresses of the form user@
698 [ipv6:....] because it didn't know about the "ipv6:" prefix.
699
7e66e54d
PH
700PH/03 Added disable_ipv6.
701
c8ea1597
PH
702PH/04 Changed $reply_address to use the raw form of the headers instead of the
703 decoded form, because it is most often used to construct To: headers
704 lines in autoreplies, and the decoded form may well be syntactically
705 invalid. However, $reply_address has leading white space removed, and all
706 newlines turned into spaces so that the autoreply transport does not
707 grumble.
708
911f6fde
PH
709PH/05 If group was specified without a user on a router, and no group or user
710 was specified on a transport, the group from the router was ignored.
711
47ca6d6c
PH
712PH/06 Increased the number of ACL variables to 20 of each type, and arranged
713 for visible compile-time settings that can be used to change these
714 numbers, for those that want even more. Backwards compatibility with old
715 spool files has been maintained. However, going back to a previous Exim
716 release will lost any variables that are in spool files.
717
ed0e9820
PH
718PH/07 Two small changes when running in the test harness: increase delay when
719 passing a TCP/IP connection to a new process, in case the original
720 process has to generate a bounce, and remove special handling of
721 127.0.0.2 (sic), which is no longer necessary.
722
eff37e47
PH
723PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
724 be the same on different OS.
725
1921d2ea
PH
726PH/09 Moved a debug statement in filter processing to avoid a race problem when
727 testing.
728
b3f69ca8
JJ
729JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
730 whether --show-vars was specified or not
731
732JJ/02 exipick: Added support for new ACL variable spool format introduced
733 in 4.61-PH/06
734
424a1c63
PH
735PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
736 syntactically invalid From: or Reply-to: line, and a filter used this to
737 generate an autoreply, and therefore failed to obtain an address for the
738 autoreply, Exim could try to deliver to a non-existent relative file
739 name, causing unrelated and misleading errors. What now happens is that
740 it logs this as a hard delivery error, but does not attempt to create a
741 bounce message.
742
7a100415
PH
743PH/11 The exinext utility has a -C option for testing purposes, but although
744 the given file was scanned by exinext itself; it wasn't being passed on
745 when Exim was called.
746
19b9dc85
PH
747PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
748 an end-of-file indication when reading a command response.
749
309bd837
PH
750PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
751 compiled. In many other places in Exim, IPv6 addresses are always
752 recognized, so I have changed this. It also means that IPv4 domain
753 literals of the form [IPV4:n.n.n.n] are now always recognized.
754
59e82a2a
PH
755PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
756 used if the router is not running as root, for example, when verifying at
757 ACL time, or when using -bh. The debugging output from this situation was
758 non-existent - all you got was a failure to exec. I have made two
759 changes:
760
761 (a) Failures to set uid/gid, the current directory, or a process leader
762 in a subprocess such as that created by queryprogram now generate
763 suitable debugging ouput when -d is set.
764
765 (b) The queryprogram router detects when it is not running as root,
766 outputs suitable debugging information if -d is set, and then runs
767 the subprocess without attempting to change uid/gid.
768
9edc04ce
PH
769PH/15 Minor change to Makefile for building test_host (undocumented testing
770 feature).
771
1349e1e5
PH
772PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
773 additional section of a DNS packet that returns MX or SRV records.
774 Instead, it always explicitly searches for A/AAAA records. This avoids
775 major problems that occur when a DNS server includes only records of one
776 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
777 fixed another bug: if SRV records were looked up and the corresponding
778 address records were *not* found in the additional section, the port
779 values from the SRV records were lost.
780
ea49d0e1
PH
781PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
782 using the correct key (the original address) when searching the retry
783 rules in order to find which one to use for generating the retry hint.
784
064a94c9
PH
785PH/18 If quota_warn_message contains a From: header, Exim now refrains from
786 adding the default one. Similarly, if it contains a Reply-To: header, the
787 errors_reply_to option, if set, is not used.
788
727071f8
PH
789PH/19 When calculating a retry time, Exim used to measure the "time since
790 failure" by looking at the "first failed" field in the retry record. Now
791 it does not use this if it is later than than the arrival time of the
792 message. Instead it uses the arrival time. This makes for better
793 behaviour in cases where some deliveries succeed, thus re-setting the
794 "first failed" field. An example is a quota failure for a huge message
795 when small messages continue to be delivered. Without this change, the
796 "time since failure" will always be short, possible causing more frequent
797 delivery attempts for the huge message than are intended.
dd16e114 798 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 799
f78eb7c6
PH
800PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
801 $1, $2, $3) because the numerical variables can be reset during some
802 expansion items (e.g. "match"), thereby losing the authentication data.
803
21c28500
PH
804PH/21 Make -bV show the size of off_t variables so that the test suite can
805 decide whether to run tests for quotas > 2G.
806
807PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
808 mailbox_size, and mailbox_filecount in the appendfile transport. If a
809 filecount value is greater than 2G or if a quota value is greater than 2G
810 on a system where the size of off_t is not greater than 4, a panic error
811 is given.
812
1688f43b
PH
813PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
814 never match. The debug and -bh output now contains an explicit error
815 message indicating a malformed IPv4 address or mask.
816
817PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
818 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
819 PH/23 above applies.
820
9675b384
PH
821PH/25 Do not write to syslog when running in the test harness. The only
822 occasion when this arises is a failure to open the main or panic logs
823 (for which there is an explicit test).
824
6a3f1455
PH
825PH/26 Added the /no_tell option to "control=freeze".
826
dac79d3e
PH
827PH/27 If a host name lookup failed very early in a connection, for example, if
828 the IP address matched host_lookup and the reverse lookup yielded a name
829 that did not have a forward lookup, an error message of the form "no IP
830 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
831 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 832
5977a0b3
PH
833PH/28 An enabling patch from MH: add new function child_open_exim2() which
834 allows the sender and the authenticated sender to be set when
835 submitting a message from within Exim. Since child_open_exim() is
836 documented for local_scan(), the new function should be too.
837
c91535f3
PH
838PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
839 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
840 results in an empty string is now treated as unset.
841
0d46a8c8
PH
842PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
843
278c6e6c
PH
844PH/31 Added sender_verify_fail logging option.
845
2cbb4081
PH
846PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
847 needed by RFC 822 but not by RFC 2822 was commented out. I have now
848 tidied the source and removed it altogether.
849
3eef829e
PH
850PH/33 When a queue run was abandoned because the load average was too high, a
851 log line was always written; now it is written only if the queue_run log
852 selector is set. In addition, the log line for abandonment now contains
853 information about the queue run such as the pid. This is always present
854 in "start" and "stop" lines but was omitted from the "abandon" line.
855
1ab95fa6
PH
856PH/34 Omit spaces between a header name and the colon in the error message that
857 is given when verify = headers_syntax fails (if there are lots of them,
858 the message gets confusing).
859
230205fc
PH
860PH/35 Change the default for dns_check_names_pattern to allow slashes within
861 names, as there are now some PTR records that contain slashes. This check
862 is only to protect against broken name servers that fall over on strange
863 characters, so the fact that it applies to all lookups doesn't matter.
864
75e0e026
PH
865PH/36 Now that the new test suite is complete, we can remove some of the
866 special code in Exim that was needed for the old test suite. For example,
867 sorting DNS records because real resolvers return them in an arbitrary
868 order. The new test suite's fake resolver always returns records in the
869 same order.
870
871PH/37 When running in the test harness, use -odi for submitted messages (e.g.
872 bounces) except when queue_only is set, to avoid logging races between
873 the different processes.
874
145396a6
PH
875PH/38 Panic-die if .include specifies a non-absolute path.
876
3cd34f13
PH
877PH/39 A tweak to the "H" retry rule from its user.
878
11121d3d
JJ
879JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
880 a label. They prevented compilation on older perls.
881
882JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
883 a warning to be raised on newish perls.
884
885JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
886 on queue. Changes to match documented behaviour of showing count of
887 messages matching specified criteria.
888
8def5aaf
PH
889PH/40 Changed the default ident timeout from 30s to 5s.
890
929ba01c
PH
891PH/41 Added support for the use of login_cap features, on those BSD systems
892 that have them, for controlling the resources used by pipe deliveries.
893
2632889e
PH
894PH/42 The content-scanning code uses fopen() to create files in which to put
895 message data. Previously it was not paying any attention to the mode of
896 the files. Exim runs with umask(0) because the rest of the code creates
897 files with open(), and sets the required mode explicitly. Thus, these
898 files were ending up world-writeable. This was not a big issue, because,
899 being within the spool directory, they were not world-accessible. I have
900 created a function called modefopen, which takes an additional mode
901 argument. It sets umask(777), creates the file, chmods it to the required
902 mode, then resets the umask. All the relevant calls to fopen() in the
903 content scanning code have been changed to use this function.
904
944a9c55
PH
905PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
906 to 24 hours. This avoids potential overflow problems when processing G
907 and H retry rules. I suspect nobody ever tinkers with this value.
908
4a23603b
PH
909PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
910
4730f942
PH
911PH/45 When the plaintext authenticator is running as a client, the server's
912 challenges are checked to ensure they are valid base64 strings. By
913 default, the authentication attempt is cancelled if an invalid string is
914 received. Setting client_ignore_invalid_base64 true ignores these errors.
915 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
916 they are received. Thus, the responses can be made to depend on the
917 challenges. If an invalid string is ignored, an empty string is placed in
918 the variable.
919
30dba1e6
PH
920PH/46 Messages that are created by the autoreply transport now contains a
921 References: header, in accordance with RFCs 2822 and 3834.
922
382afc6b
PH
923PH/47 Added authenticated_sender_force to the smtp transport.
924
a86229cf
PH
925PH/48 The ${prvs expansion was broken on systems where time_t was long long.
926
50c99ba6
PH
927PH/49 Installed latest patch from the Sieve maintainer.
928
d35e429d
PH
929PH/50 When an Exim quota was set without a file count quota, and mailbox_size
930 was also set, the appendfile transport was unnecessarily scanning a
931 directory of message files (e.g. for maildir delivery) to find the count
932 of files (along with the size), even though it did not need this
933 information. It now does the scan only if it needs to find either the
934 size of the count of files.
935
f90d018c
PH
936PH/51 Added ${time_eval: to convert Exim time strings into seconds.
937
75def545
PH
938PH/52 Two bugs concerned with error handling when the smtp transport is
939 used in LMTP mode:
940
941 (i) Exim was not creating retry information for temporary errors given
942 for individual recipients after the DATA command when the smtp transport
943 was used in LMTP mode. This meant that they could be retried too
944 frequently, and not timed out correctly.
945
946 (ii) Exim was setting the flag that allows error details to be returned
947 for LMTP errors on RCPT commands, but not for LMTP errors for individual
948 recipients that were returned after the DATA command.
949
950PH/53 This is related to PH/52, but is more general: for any failing address,
951 when detailed error information was permitted to be returned to the
952 sender, but the error was temporary, then after the final timeout, only
953 "retry timeout exceeded" was returned. Now it returns the full error as
954 well as "retry timeout exceeded".
955
c46782ef
PH
956PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
957 do this, and (what is worse) MTAs that accept it.
958
71fafd95
PH
959PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
960 will now be deprecated.
961
2c5db4fd
PH
962PH/56 New os.c-cygwin from the Cygwin maintainer.
963
9cf6b11a
JJ
964JJ/06 exipick: added --unsorted option to allow unsorted output in all output
965 formats (previously only available in exim formats via -bpr, -bpru,
966 and -bpra. Now also available in native and exiqgrep formats)
967
968JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
969 with very large, slow to parse queues
970
971JJ/08 exipick: added ! as generic prefix to negate any criteria format
972
973JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
974
898d150f
PH
975PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
976 responses to authentication challenges, though it was showing the
977 challenges; (ii) I've removed the CR characters from the debug output for
978 SMTP output lines.
979
46218253
PH
980PH/58 Allow for the insertion of a newline as well as a space when a string
981 is turned into more than one encoded-word during RFC 2047 encoding. The
982 Sieve code now uses this.
983
e97957bc
PH
984PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
985 data_4xx, lost_connection, tls_required.
986
81e509d7
PH
987PH/60 When a VRFY deferred or FAILED, the log message rather than the user
988 message was being sent as an SMTP response.
989
3d240ff7
PH
990PH/61 Add -l and -k options to exicyclog.
991
b37c4101
PH
992PH/62 When verifying, if an address was redirected to one new address, so that
993 verification continued, and the new address failed or deferred after
994 having set something in $address_data, the value of $address_data was not
995 passed back to the ACL. This was different to the case when no
996 redirection occurred. The value is now passed back in both cases.
997
79378e0f
PH
998PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
999 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1000 use login_cap.h, so on its own it isn't the distinguishing feature. The
1001 new name refers directly to the setclassresources() function.
1002
e49c7bb4
PH
1003PH/65 Added configuration files for NetBSD3.
1004
d114ec46
PH
1005PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1006
f3d7df6c
PH
1007PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1008 is preferred over IPv4.
1009
715ab376
PH
1010PH/68 The bounce_return_message and bounce_return_body options were not being
1011 honoured for bounces generated during the reception of non-SMTP messages.
1012 In particular, this applied to messages rejected by the ACL. This bug has
1013 been fixed. However, if bounce_return_message is true and bounce_return_
1014 body is false, the headers that are returned for a non-SMTP message
1015 include only those that have been read before the error was detected.
1016 (In the case of an ACL rejection, they have all been read.)
1017
6b31b150
PH
1018PH/69 The HTML version of the specification is now built in a directory called
1019 spec_html instead of spec.html, because the latter looks like a path with
1020 a MIME-type, and this confuses some software.
1021
1022PH/70 Catch two compiler warnings in sieve.c.
1023
d515a917
PH
1024PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1025 function verify_get_ident() calls ip_connect() to connect a socket, but
1026 if the "connect()" function timed out, ip_connect() used to close the
1027 socket. However, verify_get_ident() also closes the socket later, and in
1028 between Exim writes to the log, which may get opened at this point. When
1029 the socket was closed in ip_connect(), the log could get the same file
1030 descriptor number as the socket. This naturally causes chaos. The fix is
1031 not to close the socket in ip_connect(); the socket should be closed by
1032 the function that creates it. There was only one place in the code where
1033 this was missing, in the iplookup router, which I don't think anybody now
1034 uses, but I've fixed it anyway.
1035
9b8fadde
PH
1036PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1037 well as to direct DNS lookups. Otherwise the handling of names in host
1038 lists is inconsistent and therefore confusing.
1039
214e2000 1040
5de37277
PH
1041Exim version 4.60
1042-----------------
1043
cc38ddbf
PH
1044PH/01 Two changes to the default runtime configuration:
1045
1046 (1) Move the checks for relay_from_hosts and authenticated clients from
1047 after to before the (commented out) DNS black list checks.
1048
1049 (2) Add control=submission to the relay_from_hosts and authenticated
1050 clients checks, on the grounds that messages accepted by these
1051 statements are most likely to be submissions.
5de37277 1052
72fdd6ae
PH
1053PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1054
1055 (1) Generate an error if the third argument for the ${prvs expansion is
1056 not a single digit.
1057
1058 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1059 string.
1060
1061 (3) Reset the variables that are obtained from the first argument of
1062 ${prvscheck and used in the second argument before leaving the code,
1063 because their memory is reclaimed, so using them afterwards may do
1064 silly things.
1065
1066 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1067 one (it's much easier than Tom thought :-).
1068
1069 (5) Because of (4), we can now allow for the use of $prvscheck_result
1070 inside the third argument.
cb9328de 1071
cb741023
PH
1072PH/03 For some reason, the default setting of PATH when running a command from
1073 a pipe transport was just "/usr/bin". I have changed it to
1074 "/bin:/usr/bin".
1075
f174f16e
PH
1076PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1077 anything to be listed in the output from -bV.
b2f5a032 1078
c25242d7
PH
1079PH/05 When a filter generated an autoreply, the entire To: header line was
1080 quoted in the delivery log line, like this:
1081
1082 => >A.N.Other <ano@some.domain> <original@ddress> ...
1083
1084 This has been changed so that it extracts the operative address. There
1085 may be more than one such address. If so, they are comma-separated, like
1086 this:
1087
1088 => >ano@some.domain,ona@other.domain <original@ddress> ...
1089
82c19f95
PH
1090PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1091 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1092 not being looked up in the rDNS to get a host name, Exim was showing the
1093 IP address twice in Received: lines, even though the IP addresses were
1094 identical. For example:
1095
1096 Received: from [1.2.3.4] (helo=[1.2.3.4])
1097
1098 However, if the real host name was known, it was omitting the HELO data
1099 if it matched the actual IP address. This has been tidied up so that it
1100 doesn't show the same IP address twice.
1101
d7ffbc12
PH
1102PH/07 When both +timestamp and +memory debugging was on, the value given by
1103 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1104 called by the debug printing, thereby overwriting the timestamp buffer.
1105 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1106
9f526266
PH
1107PH/08 When the original message was included in an autoreply transport, it
1108 always said "this is a copy of the message, including all the headers",
1109 even if body_only or headers_only was set. It now gives an appropriate
1110 message.
1111
87fcc8b9
PH
1112PH/09 Applied a patch from the Sieve maintainer which:
1113
1114 o fixes some comments
1115 o adds the (disabled) notify extension core
1116 o adds some debug output for the result of if/elsif tests
1117 o points to the current vacation draft in the documentation
1118 and documents the missing references header update
1119
1120 and most important:
1121
1122 o fixes a bug in processing the envelope test (when testing
1123 multiple envelope elements, the last element determinted the
1124 result)
1125
456682f5
PH
1126PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1127 Electronic Mail") by including:
1128
1129 Auto-submitted: auto-generated
1130
1131 in the messages that it generates (bounce messages and others, such as
1132 warnings). In the case of bounce messages for non-SMTP mesages, there was
1133 also a typo: it was using "Auto_submitted" (underscore instead of
1134 hyphen). Since every message generated by Exim is necessarily in response
1135 to another message, thes have all been changed to:
1136
1137 Auto-Submitted: auto-replied
1138
1139 in accordance with these statements in the RFC:
1140
1141 The auto-replied keyword:
1142
1143 - SHOULD be used on messages sent in direct response to another
1144 message by an automatic process,
1145
1146 - MUST NOT be used on manually-generated messages,
1147
1148 - MAY be used on Delivery Status Notifications (DSNs) and Message
1149 Disposition Notifications (MDNs),
1150
1151 - MUST NOT be used on messages generated by automatic or periodic
1152 processes, except for messages which are automatic responses to
1153 other messages.
1154
3e46c1aa
PH
1155PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1156 to the default Received: header definition.
456682f5 1157
49826d12
PH
1158PH/12 Added log selector acl_warn_skipped (default on).
1159
eba0c039
PH
1160PH/13 After a successful wildlsearch lookup, discard the values of numeric
1161 variables because (a) they are in the wrong storage pool and (b) even if
1162 they were copied, it wouldn't work properly because of the caching.
1163
a0d6ba8a
PH
1164PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1165 checking when decoding. Apparently there are clients that generate
1166 overlong encoded strings. Why am I not surprised?
1167
f0917727
PH
1168PH/15 If the first argument of "${if match_address" was not empty, but did not
1169 contain an "@" character, Exim crashed. Now it writes a panic log message
1170 and treats the condition as false.
1171
096fee00
PH
1172PH/16 In autoreply, treat an empty string for "once" the same as unset.
1173
024bd3c2
PH
1174PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1175 extension "envelope-auth". The code is finished and in agreement with
1176 other implementations, but there is no documentation so far and in fact,
1177 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1178 not changing the active code.
1179
1180 Print executed "if" and "elsif" statements when debugging is used. This
1181 helps a great deal to understand what a filter does.
1182
1183 Document more things not specified clearly in RFC3028. I had all this
1184 sorted out, when out of a sudden new issues came to my mind. Oops."
1185
df199fec
PH
1186PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1187 (Bugzilla #53).
1188
d27f1df3
PH
1189PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1190 canonical form (as documented). However, after a host name lookup from
1191 the IP address, check_host() was doing a simple string comparison with
1192 addresses acquired from the DNS when checking that the found name did
1193 have the original IP as one of its addresses. Since any found IPv6
1194 addresses are likely to be in abbreviated form, the comparison could
1195 fail. Luckily, there already exists a function for doing the comparison
1196 by converting both addresses to binary, so now that is used instead of
1197 the text comparison.
1198
96776534
PH
1199PH/20 There was another similar case to PH/19, when a complete host name was
1200 given in a host list; looking up its IP address could give an abbreviated
1201 form, whereas the current host's name might or might not be abbreviated.
1202 The same fix has been applied.
1203
5de37277 1204
9a799bc0
PH
1205Exim version 4.54
1206-----------------
1207
1208PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1209 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1210 It now does.
1211
99a4b039
PH
1212PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1213 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1214
1215PH/03 Typo: missing ".o" in src/pcre/Makefile.
1216
4b233853
PH
1217PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1218 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1219 Also, for "Auto-Submitted", treat anything other than "no" as
1220 non-personal, in accordance with RFC 3834. (Previously it treated
1221 anything starting "auto-" as non-personal.)
1222
8857ccfd
PH
1223TF/01 The control=submission/name=... option had a problem with syntax
1224 errors if the name included a slash character. The /name= option
1225 now slurps the rest of the string, so it can include any characters
1226 but it must come last in the list of options (after /sender_retain
1227 or /domain=).
1228
433a2980
PH
1229PH/05 Some modifications to the interface to the fake nameserver for the new
1230 testing suite.
1231
3e46c1aa 1232
9a799bc0 1233
e3a311ba
TK
1234Exim version 4.53
1235-----------------
1236
1237TK/01 Added the "success_on_redirect" address verification option. See
1238 NewStuff for rationale and an example.
1239
13b685f9
PH
1240PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1241
395ff96d
PH
1242PH/02 Patch to exigrep to allow it to work on syslog lines.
1243
5b68f6e4
PH
1244PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1245 fread() to skip over the body file's header line, because in Cygwin the
1246 header line is locked and is inaccessible.
1247
1ab52c69
PH
1248PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1249 co-exist for some time) to make it clear that it is the Exim ID that is
1250 referenced, not the Message-ID: header line.
1251
b07e6aa3
PH
1252PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1253 string_format() function, because snprintf() does not exist on all
1254 operating systems.
1255
254e032f
PH
1256PH/06 The use of forbid_filter_existstest now also locks out the use of the
1257 ${stat: expansion item.
1258
3af76a81
PH
1259PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1260 protocol synchronization error", to keep the pedants happy.
1261
2548ba04
PH
1262PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1263 well as for IRIX systems, when gcc is being used. See the host.c source
1264 file for comments.
1265
b6c6011d
PH
1266PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1267
cf39cf57
PH
1268PH/10 Named domain lists were not working if used in a queue_smtp_domains
1269 setting.
1270
f1513293
PH
1271PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1272 transport and to the smtp transport in LMTP mode.
1273
727549a4
PH
1274TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1275
af46795e
PH
1276PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1277 run a filter in a subprocess. This could lead to confusion in subsequent
1278 lookups in the parent process. There should also be a search_tidyup() at
1279 the end of the subprocess.
1280
d7b47fd0
PH
1281PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1282 only if the host matched helo_try_verify_hosts, which caused the
1283 verification to occur when the EHLO/HELO command was issued. The ACL just
1284 tested the remembered result. Now, if a previous verification attempt has
1285 not happened, "verify = helo" does it there and then.
1286
ee744174
JJ
1287JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1288
b582ab87
PH
1289TK/03 Fix log output including CR from clamd.
1290
41a13e0a
PH
1291PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1292 exist provoked a memory error which could cause a segfault.
1293
f625cc5a
PH
1294PH/15 Installed PCRE 6.2
1295
1296PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1297
21f7af35
PH
1298PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1299 of the problem. Specifically, suggested +O2 rather than +O1 for the
1300 HP-UX compiler.
1301
31480e42
PH
1302PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1303
2d280592
PH
1304PH/20 If a delivery was routed to a non-standard port by means of an SRV
1305 record, the port was not correctly logged when the outgoing_port log
1306 selector was set (it logged the transort's default port).
1307
7cd1141b
PH
1308PH/21 Added support for host-specific ports to manualroute, queryprogram,
1309 fallback_hosts, and "hosts" in the smtp transport.
1310
1311PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1312 host errors such as "Connection refused".
1313
750af86e
PH
1314PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1315 authentication with radiusclient 0.4.9:
1316
1317 - Error returned from rc_read_config was caught wrongly
1318 - Username/password not passed on to radius server due to wrong length.
1319
1320 The presumption is that some radiusclient API changes for 4.51/PH/17
1321 were not taken care of correctly. The code is still untested by me (my
1322 Linux distribution still has 0.3.2 of radiusclient), but it was
1323 contributed by a Radius user.
1324
1325PH/24 When doing a callout, the value of $domain wasn't set correctly when
1326 expanding the "port" option of the smtp transport.
1327
4304270b
TK
1328TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1329 while reading a MIME header. Thanks to Tom Hughes for a patch.
1330
750af86e
PH
1331PH/24 Include config.h inside local_scan.h so that configuration settings are
1332 available.
1333
64ffc24f
PH
1334PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1335 that in an ACL for RCPT (for example), you can examine exactly what was
1336 received.
1337
5dd9625b
PH
1338PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1339 commands, but it was not correctly comparing the address with the actual
1340 client host address. Thus, it would show the EHLO address in Received:
1341 header lines when this was not necessary.
1342
5591031b
PH
1343PH/27 Added the % operator to ${eval:}.
1344
ba18e66a
PH
1345PH/28 Exim tries to create and chdir to its spool directory when it starts;
1346 it should be ignoring failures (because with -C, for example, it has lost
1347 privilege). It wasn't ignoring creation failures other than "already
1348 exists".
1349
9cec981f
PH
1350PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1351 -bV or -d is used.
1352
aa2b5c79
PH
1353PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1354 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1355 too many continuations, the temporary file was not being removed, and the
1356 return code was incorrect.
aa2b5c79 1357
48a53b7f
PH
1358PH/31 Missing "BOOL" in function definition in filtertest.c.
1359
1c59d63b
PH
1360PH/32 Applied Sieve patches from the maintainer.
1361
671012da
TK
1362TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1363
1509d3a8
PH
1364PH/33 Added "verify = not_blind".
1365
1366PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1367 Local/Makefile (with some defaults set). These are used in built scripts
1368 such as exicyclog, but they have never been used in the exim_install
1369 script (though there are many overriding facilities there). I have
1370 arranged that the exim_install script now takes note of these two
1371 settings.
1372
1373PH/35 Installed configuration files for Dragonfly.
1374
2fe1a124
PH
1375PH/36 When a locally submitted message by a trusted user did not contain a
1376 From: header, and the sender address was obtained from -f or from an SMTP
1377 MAIL command, and the trusted user did not use -F to supply a sender
1378 name, $originator_name was incorrectly used when constructing a From:
1379 header. Furthermore, $originator_name was used for submission mode
1380 messages from external hosts without From: headers in a similar way,
1381 which is clearly wrong.
1382
8800895a
PH
1383PH/37 Added control=suppress_local_fixups.
1384
ccfdb010
PH
1385PH/38 When log_selector = +received_sender was set, and the addition of the
1386 sender made the log line's construction buffer exactly full, or one byte
1387 less than full, an overflow happened when the terminating "\n" was
1388 subsequently added.
1389
1130bfb0
PH
1390PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1391 when the result of a list match is failure because a DNS lookup failed.
1392
ebcb507f
PH
1393PH/40 RM_COMMAND is now used in the building process.
1394
c35e155c
PH
1395PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1396 the "build-* directories that it finds.
1397
95d1f782
PH
1398PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1399 address in a domain literal was a prefix of an interface address.
1400
fd6de02e
PH
1401PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1402 when verifying a sender address, unless rewrite_headers is false.
1403
58de37c5
PH
1404PH/44 Wrote a long comment about why errors_to addresses are verified as
1405 recipients, not senders.
1406
261cf466
TF
1407TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1408 the ratelimit ACL was added.
1409
3ee512ff
PH
1410PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1411
e08c430f
PH
1412PH/46 Added extra information about PostgreSQL errors to the error string.
1413
bef5a11f
PH
1414PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1415 avoiding the need to install special zones in a real server. This is
1416 backwards compatible; if it can't find the fake resolver, it drops back.
1417 Thus, both old and new test suites can be run.
1418
7546de58
TF
1419TF/02 Added util/ratelimit.pl
1420
e5d5a95f
TF
1421TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1422 clock is set back in time.
1423
2e88a017
TF
1424TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1425 Candler <B.Candler@pobox.com>.
1426
a5f65aa4
TF
1427TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1428 OK for addresses that are the result of redirections.
1429
e7726cbf
PH
1430PH/48 A number of further additions for the benefit of the new test suite,
1431 including a fake gethostbyname() that interfaces to the fake DNS resolver
1432 (see PH/47 above).
1433
a7fdad5b
TF
1434TF/06 The fix for widen_domains has also been applied to qualify_single and
1435 search_parents which are the other dnslookup options that can cause
1436 header rewrites.
1437
6af56900
PH
1438PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1439 type ("H").
1440
0925ede6
PH
1441PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1442
66afa403
TF
1443TF/07 Exim produced the error message "an SRV record indicated no SMTP
1444 service" if it encountered an MX record with an empty target hostname.
1445 The message is now "an MX or SRV record indicated no SMTP service".
1446
0154e85a
TF
1447TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1448 if the DNS of the sending site is misconfigured. This is quite a
1449 common situation. This change restores the behaviour of treating a
1450 helo verification defer as a failure.
1451
16f12c76
PH
1452PH/51 If self=fail was set on a router, the bounce message did not include the
1453 actual error message.
1454
bbe902f0 1455
e5a9dba6
PH
1456Exim version 4.52
1457-----------------
1458
1459TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1460
22c3b60b
PH
1461PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1462 command itself ended in error, the underlying message about the transport
1463 filter timeout was being overwritten with the pipe command error. Now the
1464 underlying error message should be appended to the second error message.
1465
06a9b4b5
PH
1466TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1467
c1ac6996
PH
1468PH/02 Reduce the amount of output that "make" produces by default. Full output
1469 can still be requested.
1470
9c7a242c
PH
1471PH/03 The warning log line about a condition test deferring for a "warn" verb
1472 was being output only once per connection, rather than after each
1473 occurrence (because it was using the same function as for successful
1474 "warn" verbs). This seems wrong, so I have changed it.
1475
87ba3f5f
PH
1476TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1477 it should not have, which might have caused a crash in the right
1478 circumstances, but probably never did.
1479
1480PH/04 Installed a modified version of Tony Finch's patch to make submission
1481 mode fix the return path as well as the Sender: header line, and to
1482 add a /name= option so that you can make the user's friendly name appear
1483 in the header line.
1484
29aba418
TF
1485TF/03 Added the control = fakedefer ACL modifier.
1486
fe0dab11
TF
1487TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1488 Mark Lowes for thorough testing.
870f6ba8 1489
11d337a4
TK
1490TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1491
1492TK/03 Merged latest SRS patch from Miles Wilton.
1493
415c8f3b
PH
1494PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1495 with the definition in sysexits.h (which is #included earlier).
1496 Fortunately, Exim does not actually use EX_OK. The code used to try to
1497 preserve the sysexits.h value, by assumimg that macro definitions were
1498 scanned for macro replacements. I have been disabused of this notion,
1499 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1500
958541e9
PH
1501PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1502 in the smtp transport. When a block could not be written in a single
1503 write() function, the timeout was being re-applied to each part-write.
1504 This seems wrong - if the receiver was accepting one byte at a time it
1505 would take for ever. The timeout is now adjusted when this happens. It
1506 doesn't have to be particularly precise.
1507
c206415f
TK
1508TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1509 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1510
2a4be8f9
PH
1511PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1512 without a domain if the check to <postmaster@domain> fails.
1513
1cba11c5
SC
1514SC/01 Eximstats: added -xls and the ability to specify output files
1515 (patch written by Frank Heydlauf).
1516
1517SC/02 Eximstats: use FileHandles for outputing results.
1518
1519SC/03 Eximstats: allow any combination of xls, txt, and html output.
1520
1521SC/04 Eximstats: fixed display of large numbers with -nvr option
1522
1523SC/05 Eximstats: fixed merging of reports with empty tables.
1524
1525SC/06 Eximstats: added the -include_original_destination flag
1526
1527SC/07 Eximstats: removed tabs and trailing whitespace.
1528
1005d00e
TK
1529TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1530
1531TK/06 MBOX spool code: Add real "From " MBOX separator line
1532 so the .eml file is really in mbox format (even though
1533 most programs do not really care). Patch from Alex Miller.
1534
1535TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1536 The latter is generated from $received_to and is only set if the
1537 message has one envelope recipient. SA can use these headers,
1538 obviously out-of-the-box. Patch from Alex Miller.
1539
9b4768fa
PH
1540PH/08 The ${def test on a variable was returning false if the variable's
1541 value was "0", contrary to what the specification has always said!
1542 The result should be true unless the variable is empty.
1543
1544PH/09 The syntax error of a character other than { following "${if
1545 def:variable_name" (after optional whitespace) was not being diagnosed.
1546 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1547 accidental colon was present, for example, could give incorrect results.
1548
0d7eb84a
PH
1549PH/10 Tidied the code in a number of places where the st_size field of a stat()
1550 result is used (not including appendfile, where other changes are about
1551 to be made).
1552
1553PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1554 This involved changing a lot of size variables from int to off_t. It
1555 should work with maildirs and everything.
1556
40727bee
TK
1557TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1558 spamd dying while we are connected to it.
1559
554d2369
TF
1560TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1561 <jgh@wizmail.org>
1562
1f922db1
PH
1563PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1564 function for BDB 4.3.
1565
ef213c3b
PH
1566PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1567
8ac170f3
PH
1568PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1569 the sources for PCRE have been re-arranged and more files are now
1570 involved.
1571
b1c749bb
PH
1572PH/15 The code I had for printing potentially long long variables in PH/11
1573 above was not the best (it lost precision). The length of off_t variables
1574 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1575 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1576 to be "long long int" or "long int". This is needed for the internal
1577 formatting function string_vformat().
b1c749bb 1578
4aac9b49
PH
1579PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1580 the configuration file to be ":syslog", then the script "guesses" where
1581 the logs files are, rather than using the compiled in default. In our
1582 case the guess is not the same as the compiled default, so the script
1583 suddenly stopped working when I started to use syslog. The patch checks
1584 to see if log_file_path is "". If so, it attempts to read it from exim
1585 with no configuration file to get the compiled in version, before it
1586 falls back to the previous guessing code."
1587
294520c8
TK
1588TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1589 implementing BATV in an Exim configuration. See NewStuff for the gory
1590 details.
1591
5bd022fe
PH
1592PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1593 Makefile that are specific to HP-UX.
1594
90e9ce59
PH
1595PH/18 If the "use_postmaster" option was set for a recipient callout together
1596 with the "random" option, the postmaster address was used as the MAIL
1597 FROM address for the random test, but not for the subsequent recipient
1598 test. It is now used for both.
1599
5ea81592
PH
1600PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1601 patch removes a few documentation additions to RFC 3028, because the
1602 latest draft now contains them. It adds the new en;ascii-case comparator
1603 and a new error check for 8bit text in MIME parts. Comparator and
1604 require names are now matched exactly. I enabled the subaddress
1605 extension, but it is not well tested yet (read: it works for me)."
1606
c6c2dc1d
PH
1607PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1608 rework some of the code of TK/09 above to avoid the hardwired use of
1609 "%lld" and "long long". Replaced the call to snprintf() with a call to
1610 string_vformat().
1611
fffffe4c
PH
1612PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1613 records point to non-existent hosts", "retry timeout exceeded", and
1614 "retry time not reached for any host after a long failure period".
ca02eafb 1615
9a26b6b2
PH
1616PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1617 experimental DomainKeys support:
1618
1619 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1620 (2) On an error such as an illegally used "control", the wrong name for
1621 the control was given.
1622
1623 These problems did NOT occur unless DomainKeys support was compiled.
1624
4aee0225
PH
1625PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1626
32d668a5
PH
1627PH/24 Added ${if match_ip condition.
1628
8187c3f3
PH
1629PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1630 databases so that it will be absolutely obvious if a crash occurs in the
1631 DB library. This is a regular occurrence (often caused by mis-matched
1632 db.h files).
1633
ff790e47 1634PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1635 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1636 picked up on a user's system that detects such things. There doesn't seem
1637 to be a gcc warning option for this - only an attribute that has to be
1638 put on the function's prototype. It seems that in Fedora Core 4 they have
1639 set this on a number of new functions. No doubt there will be more in due
1640 course.
ff790e47 1641
5417f6d1
PH
1642PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1643 specify a transport. However, if an address that was verified by such a
1644 router was the subject of a callout, Exim crashed because it tried to
1645 read the rcpt_include_affixes from the non-existent transport. Now it
1646 just assumes that the setting of that option is false. This bug was
1647 introduced by 4.51/PH/31.
1648
59cf8544
PH
1649PH/28 Changed -d+all to exclude +memory, because that information is very
1650 rarely of interest, but it makes the output a lot bigger. People tend to
1651 do -d+all out of habit.
1652
e7ad8a65
PH
1653PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1654 code in os-type was giving problems when libc.so lives in lib64, like on
1655 x86_64 Fedora Core.
1656
ade42478
PH
1657PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1658 aren't the modern standard, and it seems that some systems' include files
1659 don't always have them. Exim was already checking for some of the newer
1660 ones like T_AAAA, and defining it itself. I've added checks for all the
1661 record types that Exim uses.
1662
182ad5cf
PH
1663PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1664 not automatically generating a new one, as it is supposed to. This
1665 prevented TLS from working. If the file did exist, but contained invalid
1666 data, a new version was generated, as expected. It was only the case of a
1667 non-existent file that was broken.
1668
b0d9fc80
TK
1669TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1670 with a change in libdomainkeys > 0.64.
1671
1672TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1673 from DNS. If the selector record carries the flag, it now has
1674 precedence over the domain-wide flag.
1675
1676TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1677
47c7a64a
PH
1678PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1679 the use of a port name that isn't defined in /etc/services) occurred, the
1680 message was deferred as in a normal delivery, and thus remained on the
1681 spool, instead of being failed because of the mua_wrapper setting. This
1682 is now fixed, and I tidied up some of the mua_wrapper messages at the
1683 same time.
1684
a388bce4
SC
1685SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1686 the messages in a hash of arrays rather than using individual hashes.
1687 This is a bit cleaner and results in dramatic memory savings, albeit
1688 at a slight CPU cost.
1689
1690SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1691 as requested by Marc Sherman.
1692
1693SC/10 Eximstats: added histograms for user specified patterns as requested
1694 by Marc Sherman.
1695
0793e4ed
SC
1696SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1697
c58b88df
PH
1698PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1699 fopen() in the content-scanning modules that did not already have it.
1700
e7ad8a65 1701
7982096b
PH
1702Exim version 4.51
1703-----------------
1704
1a46a8c5
PH
1705TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1706 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1707
2f079f46 1708TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1709
1710TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1711
1712PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1713 to test Sieve filters that use "vacation".
1714
1715PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1716 that changes the way the GnuTLS parameters are stored in the cache file.
1717 The new format can be generated externally. For backward compatibility,
1718 if the data in the cache doesn't make sense, Exim assumes it has read an
1719 old-format file, and it generates new data and writes a new file. This
1720 means that you can't go back to an older release without removing the
1721 file.
1722
1723PH/03 A redirect router that has both "unseen" and "one_time" set does not
1724 work if there are any delivery delays because "one_time" forces the
1725 parent to be marked "delivered", so its unseen clone is never tried
1726 again. For this reason, Exim now forbids the simultaneous setting of
1727 these two options.
1728
1729PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1730 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1731 entry if you want to know the details. The fix, however, neglected to
1732 consider the case when local delivery batching is involved. The test for
1733 "previously delivered" was not happening when checking to see if an
1734 address could be batched with a previous (undelivered) one; under
1735 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1736 address.
1a46a8c5
PH
1737
1738PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1739 in its include files, and this causes problems building Exim.
1740
1741PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1742 header_syntax) but Exim was just ignoring anything given after a slash.
1743 In particular, this caused confusion with an attempt to use "verify =
1744 reverse_host_lookup/defer_ok". An error is now given when options are
1745 supplied for verify items that do not have them. (Maybe reverse_host_
1746 lookup should have a defer_ok option, but that's a different point.)
1747
1748PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1749 defined by RFC 821) to 2048, because there were problems with some AUTH
1750 commands, and RFC 1869 says the size should be increased for extended
1751 SMTP commands that take arguments.
1752
1753PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1754 Finch).
1755
1756PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1757 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1758
49c2d5ea
PH
1759PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1760 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1761 whatever). Otherwise the password may appear in the log. Following change
1762 PH/42 below, there is no longer a chance of it appearing in a bounce
1763 message.
49c2d5ea 1764
bf759a8b
PH
1765PH/11 Installed exipick version 20050225.0 from John Jetmore.
1766
83364d30
PH
1767PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1768 of its addresses was ever tried. (Bugzilla bug #2.)
1769
7999bbd7
PH
1770PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1771 the result incorrectly in the debug output. (It correctly added a newline
1772 to what was transported.)
1773
7dbf77c9
PH
1774TF/01 Added $received_time.
1775
74e0617f
PH
1776PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1777 commented out examples of how to interface to a virus scanner and to
1778 SpamAssassin. Also added commented examples of av_scanner and
1779 spamd_address settings.
1780
2f079f46
PH
1781PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1782 and controls are allowed in which ACLs. There were a couple of minor
1783 errors. Some of the entries in the conditions table (which is a table of
1784 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1785 negation of where the condition IS allowed.
1786
8c841523
PH
1787PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1788
7766a4f0
PH
1789PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1790 header file does not have a version number, so I've had to invent a new
1791 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1792 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1793 radiusclient), but it was contributed by a Radius user.
1794
8b417f2c
PH
1795PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1796 files or directories, for OpenSSL.
1797
901f42cb
PH
1798PH/19 When an Exim process that is running as root has to create an Exim log
1799 file, it does so in a subprocess that runs as exim:exim so as to get the
1800 ownership right at creation (otherwise, other Exim processes might see
1801 the file with the wrong ownership). There was no test for failure of this
1802 fork() call, which would lead to the process getting stuck as it waited
1803 for a non-existent subprocess. Forks do occasionally fail when resources
1804 run out. I reviewed all the other calls to fork(); they all seem to check
1805 for failure.
1806
f9b9210e
PH
1807PH/20 When checking for unexpected SMTP input at connect time (before writing
1808 the banner), Exim was not dealing correctly with a non-positive return
1809 from the read() function. If the client had disconnected by this time,
1810 the result was a log entry for a synchronization error with an empty
1811 string after "input=" when read() returned zero. If read() returned -1
1812 (an event I could not check), uninitialized data bytes were printed.
1813 There were reports of junk text (parts of files, etc) appearing after
1814 "input=".
1815
54cdb463
PH
1816PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1817
cf00dad6
PH
1818PH/22 Added support for macro redefinition, and (re)definition in between
1819 driver and ACL definitions.
1820
acb1b346
PH
1821PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1822 forgetting to use the resulting value; it was using the unexpanded value.
1823
c5ddb310
PH
1824PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1825 hadn't been configured. The fix is from Juergen Kreileder, who
1826 understands it better than I do:
1827
1828 "Here's what I see happening with three configured cyrus_sasl
1829 authenticators configured (plain, login, cram-md5):
1830
1831 On startup auth_cyrus_sasl_init() gets called for each of these.
1832 This means three calls to sasl_listmech() without a specified mech_list.
1833 => SASL tests which mechs of all available mechs actually work
1834 => three warnings about OTP not working
1835 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1836
1837 With the patch, sasl_listmech() also gets called three times. But now
1838 SASL's mech_list option is set to the server_mech specified in the the
1839 authenticator. Or in other words, the answer from sasl_listmech()
1840 gets limited to just the mech you're testing for (which is different
1841 for each call.)
1842 => the return list contains just 'plain' or 'login', 'cram-md5' or
1843 nothing depending on the value of ob->server_mech.
1844
1845 I've just tested the patch: Authentication still works fine,
1846 unavailable mechs specified in the exim configuration are still
1847 caught, and the auth.log warnings about OTP are gone."
1848
31619da6
PH
1849PH/25 When debugging is enabled, the contents of the command line are added
1850 to the debugging output, even when log_selector=+arguments is not
1851 specified.
1852
bebaf0fc
PH
1853PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1854 answer is "GNU", and only if the return is "GNU/something" is the answer
1855 "Linux".
1856
475fe28a
PH
1857PH/27 $acl_verify_message is now set immediately after the failure of a
1858 verification in an ACL, and so is available in subsequent modifiers. In
1859 particular, the message can be preserved by coding like this:
1860
1861 warn !verify = sender
1862 set acl_m0 = $acl_verify_message
1863
1864 Previously, $acl_verify_message was set only while expanding "message"
1865 and "log_message" when a very denied access.
1866
7e8bec7a
PH
1867PH/28 Modified OS/os.c-Linux with
1868
1869 -#ifndef OS_LOAD_AVERAGE
1870 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1871
1872 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1873 nomenclature these days.)
1874
e4a89c47
PH
1875PH/29 Installed patch from the Sieve maintainer that adds the options
1876 sieve_useraddress and sieve_subaddress to the redirect router.
1877
5ca2a9a1
PH
1878PH/30 In these circumstances:
1879 . Two addresses routed to the same list of hosts;
1880 . First host does not offer TLS;
1881 . First host accepts first address;
1882 . First host gives temporary error to second address;
1883 . Second host offers TLS and a TLS session is established;
1884 . Second host accepts second address.
1885 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1886 and peerdn, if requested) that were in fact used only for the second
1887 address.
7e8bec7a 1888
c688b954
PH
1889PH/31 When doing a callout as part of verifying an address, Exim was not paying
1890 attention to any local part prefix or suffix that was matched by the
1891 router that accepted the address. It now behaves in the same way as it
1892 does for delivery: the affixes are removed from the local part unless
1893 rcpt_include_affixes is set on the transport.
1894
fed77020
PH
1895PH/32 Add the sender address, as F=<...>, to the log line when logging a
1896 timeout during the DATA phase of an incoming message.
1897
7fe1560f
PH
1898PH/33 Sieve envelope tests were broken for match types other than :is. I have
1899 applied a patch sanctioned by the Sieve maintainer.
c688b954 1900
ebb6e6d5
PH
1901PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1902 the uid or gid is negative. A case of a negative gid caused this to be
1903 noticed. The fix allows for either to be negative.
1904
9c4e8f60
PH
1905PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1906 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1907 overlooked.
1908
1909PH/36 The change PH/12 above was broken. Fixed it.
1910
d7174846
PH
1911PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1912 the grounds that routing the same address twice would always produce the
1913 same answer. This might have been true once, but it is certainly no
1914 longer true now. Routing a child address may depend on the previous
1915 routing that produced that child. Some complicated redirection strategies
1916 went wrong when messages had multiple recipients, and made Exim's
1917 behaviour dependent on the order in which the addresses were given.
1918
1919 I have moved the duplicate checking until after the routing is complete.
1920 Exim scans the addresses that are assigned to local and remote
1921 transports, and removes any duplicates. This means that more work will be
1922 done, as duplicates will always all be routed, but duplicates are
1923 presumably rare, so I don't expect this is of any significance.
1924
1925 For deliveries to pipes, files, and autoreplies, the duplicate checking
1926 still happens during the routing process, since they are not going to be
1927 routed further.
1928
cfe75fc3
PH
1929PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1930 It corrects a timeout issue with spamd. This is Ian's comment: "The
1931 background is that sometimes spamd either never reads data from a
1932 connection it has accepted, or it never writes response data. The exiscan
1933 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1934 blindly assumes that writes won't block so it may never time out."
1935
be22d70e
PH
1936PH/39 Allow G after quota size as well as K and M.
1937
0612b098
PH
1938PH/40 The value set for $authenticated_id in an authenticator may not contain
1939 binary zeroes or newlines because the value is written to log lines and
1940 to spool files. There was no check on this. Now the value is run through
1941 the string_printing() function so that such characters are converted to
1942 printable escape sequences.
1943
2e0c1448
PH
1944PH/41 $message_linecount is a new variable that contains the total number of
1945 lines in the message. Compare $body_linecount, which is the count for the
1946 body only.
1947
447d236c
PH
1948PH/42 Exim no longer gives details of delivery errors for specific addresses in
1949 bounce and delay warning messages, except in certain special cases, which
1950 are as follows:
1951
1952 (a) An SMTP error message from a remote host;
1953 (b) A message specified in a :fail: redirection;
1954 (c) A message specified in a "fail" command in a system filter;
1955 (d) A message specified in a FAIL return from the queryprogram router;
1956 (e) A message specified by the cannot_route_message router option.
1957
1958 In these cases only, Exim does include the error details in bounce and
1959 warning messages. There are also a few cases where bland messages such
1960 as "unrouteable address" or "local delivery error" are given.
1961
d20976dc
PH
1962PH/43 $value is now also set for the "else" part of a ${run expansion.
1963
f656d135
PH
1964PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1965 being worked on, but at least Exim now implements the latest version to
1966 play with."
1967
2e2a30b4
PH
1968PH/45 In a pipe transport, although a timeout while waiting for the pipe
1969 process to complete was treated as a delivery failure, a timeout while
1970 writing the message to the pipe was logged, but erroneously treated as a
1971 successful delivery. Such timeouts include transport filter timeouts. For
1972 consistency with the overall process timeout, these timeouts are now
1973 treated as errors, giving rise to delivery failures by default. However,
1974 there is now a new Boolean option for the pipe transport called
1975 timeout_defer, which, if set TRUE, converts the failures into defers for
1976 both kinds of timeout. A transport filter timeout is now identified in
1977 the log output.
1978
9176e9f0
PH
1979PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1980 systems where "make" and "gmake" are different, calling "gmake" at top
1981 level broke things. I've arranged for the value of $(MAKE) to be passed
1982 from the Makefile to this script so that it can call the same version of
1983 "make".
1984
7982096b 1985
bbe902f0
PH
1986A note about Exim versions 4.44 and 4.50
1987----------------------------------------
1988
1989Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1990changes of various kinds. As a consequence, a big documentation update was
1991needed. This delayed the release for rather longer than seemed good, especially
1992in the light of a couple of (minor) security issues. Therefore, the changes
1993that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1994release. So 4.44 and 4.50 are in effect two different branches that both start
1995from 4.43.
1996
1997I have left the 4.50 change log unchanged; it contains all the changes since
19984.43. The change log for 4.44 is below; many of its items are identical to
1999those for 4.50. This seems to be the most sensible way to preserve the
2000historical information.
2001
2002
f7b63901 2003Exim version 4.50
495ae4b0
PH
2004-----------------
2005
5fe762f6
PH
2006 1. Minor wording change to the doc/README.SIEVE file.
2007
139059f6 2008 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2009 computation of the current number of files was incorrect.
495ae4b0 2010
7086e875
PH
2011 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2012 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2013 place.
2014
35af9f61
PH
2015 4. Give more explanation in the error message when the command for a transport
2016 filter fails to execute.
2017
b668c215
PH
2018 5. There are several places where Exim runs a non-Exim command in a
2019 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2020 was being done only for the command run by the queryprogram router. It is
2021 now done for all such subprocesses. The other cases are: ${run, transport
2022 filters, and the commands run by the lmtp and pipe transports.
2023
a494b1e1
PH
2024 6. Added CONFIGURE_GROUP build-time option.
2025
2026 7. Some older OS have a limit of 256 on the maximum number of file
2027 descriptors. Exim was using setrlimit() to set 1000 as a large value
2028 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2029 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2030
c5fcb476
PH
2031 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2032 was an oversight, and furthermore, ever since the addition of extra
2033 controls (e.g. 4.43/32), the checks on when to allow different forms of
2034 "control" were broken. There should now be diagnostics for all cases when a
2035 control that does not make sense is encountered.
2036
69358f02
PH
2037 9. Added the /retain_sender option to "control=submission".
2038
5be20824
PH
203910. $recipients is now available in the predata ACL (oversight).
2040
eb2c0248
PH
204111. Tidy the search cache before the fork to do a delivery from a message
2042 received from the command line. Otherwise the child will trigger a lookup
2043 failure and thereby defer the delivery if it tries to use (for example) a
2044 cached ldap connection that the parent has called unbind on.
2045
2a3eea10
PH
204612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2047 of $address_data from the recipient verification was clobbered by the
2048 sender verification.
2049
205013. The value of address_data from a sender verification is now available in
2051 $sender_address_data in subsequent conditions in the ACL statement.
2052
23c7ff99
PH
205314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2054
4deaf07d
PH
205515. Added a new option "connect=<time>" to callout options, to set a different
2056 connection timeout.
2057
926e1192
PH
205816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2059 was its contents. (It was OK if the option was not defined at all.)
2060
650edc6f
PH
206117. A "Completed" log line is now written for messages that are removed from
2062 the spool by the -Mrm option.
2063
2c7db3f5
PH
206418. New variables $sender_verify_failure and $recipient_verify_failure contain
2065 information about exactly what failed.
2066
3d235903
PH
206719. Added -dd to debug only the daemon process.
2068
7c7ad977
PH
206920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2070 handles timeouts, both on the server side and network timeouts. Renamed the
2071 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2072
981756db
PH
207321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2074 It is now set to "smtps".
2075
d4eb88df
PH
207622. $host_address is now set to the target address during the checking of
2077 ignore_target_hosts.
2078
207923. When checking ignore_target_hosts for an ipliteral router, no host name was
2080 being passed; this would have caused $sender_host_name to have been used if
2081 matching the list had actually called for a host name (not very likely,
2082 since this list is usually IP addresses). A host name is now passed as
2083 "[x.x.x.x]".
2084
7d468ab8
PH
208524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2086 code that specifies a non-restarting handler (typically sigaction() in
2087 modern systems) in an attempt to fix a rare and obscure crash bug.
2088
208925. Narrowed the window for a race in the daemon that could cause it to ignore
2090 SIGCHLD signals. This is not a major problem, because they are used only to
2091 wake it up if nothing else does.
2092
62c0818f
PH
209326. A malformed maildirsize file could cause Exim to calculate negative values
2094 for the mailbox size or file count. Odd effects could occur as a result.
2095 The maildirsize information is now recalculated if the size or filecount
2096 end up negative.
2097
26034054
PH
209827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2099 support for a long time. Removed HAVE_SYS_VFS_H.
2100
af66f652
PH
210128. Installed the latest version of exipick from John Jetmore.
2102
90af77f4
PH
210329. In an address list, if the pattern was not a regular expression, an empty
2104 subject address (from a bounce message) matched only if the pattern was an
2105 empty string. Non-empty patterns were not even tested. This was the wrong
2106 because it is perfectly reasonable to use an empty address as part of a
2107 database query. An empty address is now tested by patterns that are
2108 lookups. However, all the other forms of pattern expect the subject to
2109 contain a local part and a domain, and therefore, for them, an empty
2110 address still always fails if the pattern is not itself empty.
2111
d8ef3577
PH
211230. Exim went into a mad DNS loop when attempting to do a callout where the
2113 host was specified on an smtp transport, and looking it up yielded more
2114 than one IP address.
2115
5cb8cbc6
PH
211631. Re-factored the code for checking spool and log partition space into a
2117 function that finds that data and another that does the check. The former
2118 is then used to implement four new variables: $spool_space, $log_space,
2119 $spool_inodes, and $log_inodes.
2120
14702f5b
PH
212132. The RFC2047 encoding function was originally intended for short strings
2122 such as real names; it was not keeping to the 75-character limit for
2123 encoded words that the RFC imposes. It now respects the limit, and
2124 generates multiple encoded words if necessary. To be on the safe side, I
2125 have increased the buffer size for the ${rfc2047: expansion operator from
2126 1024 to 2048 bytes.
2127
063b1e99
PH
212833. It is now permitted to omit both strings after an "if" condition; if the
2129 condition is true, the result is "true". As before, when the second string
2130 is omitted, a false condition yields an empty string. This makes it less
2131 cumbersome to write custom ACL and router conditions.
2132
652e1b65
PH
213334. Failure to deliver a bounce message always caused it to be frozen, even if
2134 there was an errors_to setting on the router. The errors_to setting is now
2135 respected.
2136
6f0c9a4f
PH
213735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2138 canonical form (fully expanded) before being placed in
2139 $sender_host_address.
2140
33397d19
PH
214136. The table in the code that translates DNS record types into text (T_A to
2142 "A" for instance) was missing entries for NS and CNAME. It is just possible
2143 that this could have caused confusion if both these types were looked up
2144 for the same domain, because the text type is used as part of Exim's
2145 per-process caching. But the chance of anyone hitting this buglet seems
2146 very small.
2147
7bb56e1f
PH
214837. The dnsdb lookup has been extended in a number of ways.
2149
2150 (1) There is a new type, "zns", which walks up the domain tree until it
2151 finds some nameserver records. It should be used with care.
2152
ea3bc19b
PH
2153 (2) There is a new type, "mxh", which is like "mx" except that it returns
2154 just the host names, not the priorities.
2155
2156 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2157 looked up. The behaviour when one of the lookups defers can be
2158 controlled by a keyword.
7bb56e1f 2159
ea3bc19b 2160 (4) It is now possible to specify the separator character for use when
7bb56e1f 2161 multiple records are returned.
33397d19 2162
0bcb2a0e
PH
216338. The dnslists ACL condition has been extended: it is now possible to supply
2164 a list of IP addresses and/or domains to be looked up in a particular DNS
2165 domain.
2166
2ac0e484
PH
216739. Added log_selector=+queue_time_overall.
2168
4e1fde53
PH
216940. When running the queue in the test harness, wait just a tad after forking a
2170 delivery process, to get repeatability of debugging output.
2171
de365ded
PH
217241. Include certificate and key file names in error message when GnuTLS fails
2173 to set them up, because the GnuTLS error message doesn't include the name
2174 of the failing file when there is a problem reading it.
2175
f05da2e8
PH
217642. Allow both -bf and -bF in the same test run.
2177
d6453af2
PH
217843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2179
f7b63901
PH
218044. The "Exiscan patch" is now merged into the mainline Exim source.
2181
218245. Sometimes the final signoff response after QUIT could fail to get
2183 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2184 < 0 before doing a fflush(). This bug looks as though it goes back to the
2185 introduction of TLS in release 3.20, but "sometimes" must have been rare
2186 because the tests only now provoked it.
2187
a444213a
PH
218846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2189 (this can affect the format of dates).
2190
0ec020ea
PH
219147. exim_tidydb, when checking for the continued existence of a message for
2192 which it has found a message-specific retry record, was not finding
2193 messages that were in split spool directories. Consequently, it was
2194 deleting retry records that should have stayed in existence.
2195
b1206957
PH
219648. Steve fixed some bugs in eximstats.
2197
219849. The SPA authentication driver was not abandoning authentication and moving
2199 on to the next authenticator when an expansion was forced to fail,
2200 contradicting the general specification for all authenticators. Instead it
2201 was generating a temporary error. It now behaves as specified.
2202
26dd5a95
PH
220350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2204 (the order specifies the preference for clients). The order is now AES256,
2205 AES128, 3DES, ARCFOUR128.
2206
343b2385
PH
220751. Small patch to Sieve code - explicitly set From: when generating an
2208 autoreply.
2209
1c5466b9
PH
221052. Exim crashed if a remote delivery caused a very long error message to be
2211 recorded - for instance if somebody sent an entire SpamAssassin report back
2212 as a large number of 550 error lines. This bug was coincidentally fixed by
2213 increasing the size of one of Exim's internal buffers (big_buffer) that
2214 happened as part of the Exiscan merge. However, to be on the safe side, I
2215 have made the code more robust (and fixed the comments that describe what
2216 is going on).
2217
55ee9ee3
PH
221853. Now that there can be additional text after "Completed" in log lines (if
2219 the queue_time_overall log selector is set), a one-byte patch to exigrep
2220 was needed to allow it to recognize "Completed" as not the last thing in
2221 the line.
2222
d38f8232
PH
222354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2224 patch that reportedly fixes this has been added. I am not expert enough to
2225 create a test for it. This is what the patch creator wrote:
2226
2227 "I found a little strange behaviour of ldap code when working with
2228 Windows 2003 AD Domain, where users was placed in more than one
2229 Organization Units. When I tried to give exim partial DN, the exit code
2230 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2231 But simultaneously result of request was absolutely normal ldap result,
2232 so I produce this patch..."
2233
3295e65b
PH
2234 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2235 REFERENCE, so I have modified the code to exclude the patch when that macro
2236 is not defined.
2237
7102e136
PH
223855. Some experimental protocols are using DNS PTR records for new purposes. The
2239 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2240 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2241 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2242 CAN-2005-0021
7102e136 2243
3ca0ba97
PH
224456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2245
c2bcbe20
PH
224657. Double the size of the debug message buffer (to 2048) so that more of very
2247 long debug lines gets shown.
2248
18ce445d
PH
224958. The exicyclog utility now does better if the number of log files to keep
2250 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2251
1f5b4c3d
PH
225259. Two changes related to the smtp_active_hostname option:
2253
2254 (1) $smtp_active_hostname is now available as a variable.
2255 (2) The default for smtp_banner uses $smtp_active_hostname instead
2256 of $primary_hostname.
2257
b975ba52
PH
225860. The host_aton() function is supposed to be passed a string that is known
2259 to be a valid IP address. However, in the case of IPv6 addresses, it was
2260 not checking this. This is a hostage to fortune. Exim now panics and dies
2261 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2262 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2263 components; fortuitously, this particular loophole had already been fixed
2264 by change 4.50/55 above.
2265
2266 If there are any other similar loopholes, the new check in host_aton()
2267 itself should stop them being exploited. The report I received stated that
2268 data on the command line could provoke the exploit when Exim was running as
2269 exim, but did not say which command line option was involved. All I could
2270 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2271 running as the user.
ea3a6f44 2272 CAN-2005-0021
85b87bc2
PH
2273
227461. There was a buffer overflow vulnerability in the SPA authentication code
2275 (which came originally from the Samba project). I have added a test to the
2276 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2277 CAN-2005-0022
b975ba52 2278
17ffcae7
PH
227962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2280 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2281
d95f9fdb
PH
228263. The daemon start-up calls getloadavg() while still root for those OS that
2283 need the first call to be done as root, but it missed one case: when
2284 deliver_queue_load_max is set with deliver_drop_privilege. This is
2285 necessary for the benefit of the queue runner, because there is no re-exec
2286 when deliver_drop_privilege is set.
2287
86b8287f
PH
228864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2289 This has been fixed.
2290
60dc5e56
PH
229165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2292 was in use, was not putting the data itself into the right store pool;
2293 consequently, it could be overwritten for a subsequent message in the same
2294 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2295 the caching.)
2296
533244af
PH
229766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2298
a5a28604
PH
229967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2300 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2301 the function were treating the return as a boolean value, which happened to
2302 work because 0=false and not-0=true, but is not correct code.
2303
7e634d24
PH
230468. The host_aton() function was not handling scoped IPv6 addresses (those
2305 with, for example, "%eth0" on the end) correctly.
2306
3e11c26b
PH
230769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2308 negated items (that is, ~something) in unsigned ints. Some compilers
2309 apparently mutter when there is no cast.
2310
6729cf78
PH
231170. If an address verification called from an ACL failed, and did not produce a
2312 user-specific message (i.e. there was only a "system" message), nothing was
2313 put in $acl_verify_message. In this situation, it now puts the system
2314 message there.
2315
00f00ca5
PH
231671. Change 4.23/11 added synchronization checking at the start of an SMTP
2317 session; change 4.31/43 added the unwanted input to the log line - except
2318 that it did not do this in the start of session case. It now does.
2319
c9bdd01c
PH
232072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2321 This is wrong and can cause the other end to generate a synchronization
2322 error if it is another Exim or anything else that does the synchronization
2323 check. A QUIT command is no longer sent after a timeout.
2324
d43194df
PH
232573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2326 during host lookups.
2327
fe5b5d0b
PH
232874. The defer_ok option of callout verification was not working if it was used
2329 when verifying addresses in header lines, that is, for this case:
2330
2331 verify = header_sender/callout=defer_ok
2332
76a2d7ba
PH
233375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2334 those file descriptors could be used for SMTP connections. If anything
2335 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2336 could be sent to the SMTP client, causing chaos. The daemon now opens
2337 stdin, stdout, and stderr to /dev/null when it puts itself into the
2338 background.
2339
234076. Arrange for output from Perl's "warn" command to be written to Exim's main
2341 log by default. The user can override this with suitable Perl magic.
2342
04f7d5b9
PH
234377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2344 the log message when discard triggers, was not working for the DATA ACL or
2345 for the non-SMTP ACL.
2346
bc60667e
PH
234778. Error message wording change in sieve.c.
2348
bb6e88ff
PH
234979. If smtp_accept_max_per_host was set, the number of connections could be
2350 restricted to fewer than expected, because the daemon was trying to set up
2351 a new connection before checking whether the processes handling previous
2352 connections had finished. The check for completed processes is now done
2353 earlier. On busy systems, this bug wouldn't be noticed because something
2354 else would have woken the daemon, and it would have reaped the completed
2355 process earlier.
2356
1e70f85b
PH
235780. If a message was submitted locally by a user whose login name contained one
2358 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2359 It caused a spool format error. I have fixed the spool reading code. A
2360 related problem was that the "from" clause in the Received: line became
2361 illegal because of the space(s). It is now covered by ${quote_local_part.
2362
236381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2364 tables).
2365
4e01f9d6
PH
236682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2367
1ee1cef2
PH
236883. Patch from Sieve maintainer to fix unterminated string problem in
2369 "vacation" handling.
2370
6e2b4ccc
PH
237184. Some minor changes to the Linux configuration files to help with other
2372 OS variants using glibc.
2373
8e669ac1
PH
237485. One more patch for Sieve to update vacation handling to latest spec.
2375
495ae4b0 2376
bbe902f0
PH
2377----------------------------------------------------
2378See the note above about the 4.44 and 4.50 releases.
2379----------------------------------------------------
2380
2381
2382Exim version 4.44
2383-----------------
2384
2385 1. Change 4.43/35 introduced a bug that caused file counts to be
2386 incorrectly computed when quota_filecount was set in an appendfile
2387 transport
2388
2389 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2390 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2391 place.
2392
2393 3. Give more explanation in the error message when the command for a transport
2394 filter fails to execute.
2395
2396 4. There are several places where Exim runs a non-Exim command in a
2397 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2398 was being done only for the command run by the queryprogram router. It is
2399 now done for all such subprocesses. The other cases are: ${run, transport
2400 filters, and the commands run by the lmtp and pipe transports.
2401
2402 5. Some older OS have a limit of 256 on the maximum number of file
2403 descriptors. Exim was using setrlimit() to set 1000 as a large value
2404 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2405 systems. I've change it so that if it can't get 1000, it tries for 256.
2406
2407 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2408 was an oversight, and furthermore, ever since the addition of extra
2409 controls (e.g. 4.43/32), the checks on when to allow different forms of
2410 "control" were broken. There should now be diagnostics for all cases when a
2411 control that does not make sense is encountered.
2412
2413 7. $recipients is now available in the predata ACL (oversight).
2414
2415 8. Tidy the search cache before the fork to do a delivery from a message
2416 received from the command line. Otherwise the child will trigger a lookup
2417 failure and thereby defer the delivery if it tries to use (for example) a
2418 cached ldap connection that the parent has called unbind on.
2419
2420 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2421 of $address_data from the recipient verification was clobbered by the
2422 sender verification.
2423
242410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2425 was its contents. (It was OK if the option was not defined at all.)
2426
242711. A "Completed" log line is now written for messages that are removed from
2428 the spool by the -Mrm option.
2429
243012. $host_address is now set to the target address during the checking of
2431 ignore_target_hosts.
2432
243313. When checking ignore_target_hosts for an ipliteral router, no host name was
2434 being passed; this would have caused $sender_host_name to have been used if
2435 matching the list had actually called for a host name (not very likely,
2436 since this list is usually IP addresses). A host name is now passed as
2437 "[x.x.x.x]".
2438
243914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2440 code that specifies a non-restarting handler (typically sigaction() in
2441 modern systems) in an attempt to fix a rare and obscure crash bug.
2442
244315. Narrowed the window for a race in the daemon that could cause it to ignore
2444 SIGCHLD signals. This is not a major problem, because they are used only to
2445 wake it up if nothing else does.
2446
244716. A malformed maildirsize file could cause Exim to calculate negative values
2448 for the mailbox size or file count. Odd effects could occur as a result.
2449 The maildirsize information is now recalculated if the size or filecount
2450 end up negative.
2451
245217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2453 support for a long time. Removed HAVE_SYS_VFS_H.
2454
ea3a6f44 245518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2456
245719. Allow an empty sender to be matched against a lookup in an address list.
2458 Previously the only cases considered were a regular expression, or an
2459 empty pattern.
2460
246120. Exim went into a mad DNS lookup loop when doing a callout where the
2462 host was specified on the transport, if the DNS lookup yielded more than
2463 one IP address.
2464
ea3a6f44
NM
246521. The RFC2047 encoding function was originally intended for short strings
2466 such as real names; it was not keeping to the 75-character limit for
2467 encoded words that the RFC imposes. It now respects the limit, and
2468 generates multiple encoded words if necessary. To be on the safe side, I
2469 have increased the buffer size for the ${rfc2047: expansion operator from
2470 1024 to 2048 bytes.
bbe902f0 2471
ea3a6f44
NM
247222. Failure to deliver a bounce message always caused it to be frozen, even if
2473 there was an errors_to setting on the router. The errors_to setting is now
2474 respected.
bbe902f0
PH
2475
247623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2477 canonical form (fully expanded) before being placed in
2478 $sender_host_address.
2479
248024. Updated eximstats to version 1.33
2481
ea3a6f44
NM
248225. Include certificate and key file names in error message when GnuTLS fails
2483 to set them up, because the GnuTLS error message doesn't include the name
2484 of the failing file when there is a problem reading it.
bbe902f0
PH
2485
248626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2487 As per change 25.
bbe902f0 2488
ea3a6f44
NM
248927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2490 (this can affect the format of dates).
bbe902f0 2491
ea3a6f44
NM
249228. exim_tidydb, when checking for the continued existence of a message for
2493 which it has found a message-specific retry record, was not finding
2494 messages that were in split spool directories. Consequently, it was
2495 deleting retry records that should have stayed in existence.
bbe902f0
PH
2496
249729. eximstats updated to version 1.35
2498 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2499 1.35 - bugfix such that pie charts by volume are generated correctly
2500
ea3a6f44
NM
250130. The SPA authentication driver was not abandoning authentication and moving
2502 on to the next authenticator when an expansion was forced to fail,
2503 contradicting the general specification for all authenticators. Instead it
2504 was generating a temporary error. It now behaves as specified.
bbe902f0 2505
ea3a6f44
NM
250631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2507 (the order specifies the preference for clients). The order is now AES256,
2508 AES128, 3DES, ARCFOUR128.
bbe902f0 2509
ea3a6f44
NM
251031. Small patch to Sieve code - explicitly set From: when generating an
2511 autoreply.
bbe902f0 2512
ea3a6f44
NM
251332. Exim crashed if a remote delivery caused a very long error message to be
2514 recorded - for instance if somebody sent an entire SpamAssassin report back
2515 as a large number of 550 error lines. This bug was coincidentally fixed by
2516 increasing the size of one of Exim's internal buffers (big_buffer) that
2517 happened as part of the Exiscan merge. However, to be on the safe side, I
2518 have made the code more robust (and fixed the comments that describe what
2519 is going on).
bbe902f0 2520
ea3a6f44
NM
252133. Some experimental protocols are using DNS PTR records for new purposes. The
2522 keys for these records are domain names, not reversed IP addresses. The
2523 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2524 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2525 CAN-2005-0021
2526
ea3a6f44
NM
252734. The host_aton() function is supposed to be passed a string that is known
2528 to be a valid IP address. However, in the case of IPv6 addresses, it was
2529 not checking this. This is a hostage to fortune. Exim now panics and dies
2530 if the condition is not met. A case was found where this could be provoked
2531 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2532 components; fortuitously, this particular loophole had already been fixed
2533 by change 4.50/55 or 4.44/33 above.
2534
2535 If there are any other similar loopholes, the new check in host_aton()
2536 itself should stop them being exploited. The report I received stated that
2537 data on the command line could provoke the exploit when Exim was running as
2538 exim, but did not say which command line option was involved. All I could
2539 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2540 running as the user.
bbe902f0
PH
2541 CAN-2005-0021
2542
ea3a6f44
NM
254335. There was a buffer overflow vulnerability in the SPA authentication code
2544 (which came originally from the Samba project). I have added a test to the
2545 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2546 CAN-2005-0022
2547
ea3a6f44
NM
254836. The daemon start-up calls getloadavg() while still root for those OS that
2549 need the first call to be done as root, but it missed one case: when
2550 deliver_queue_load_max is set with deliver_drop_privilege. This is
2551 necessary for the benefit of the queue runner, because there is no re-exec
2552 when deliver_drop_privilege is set.
bbe902f0 2553
ea3a6f44
NM
255437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2555 was in use, was not putting the data itself into the right store pool;
2556 consequently, it could be overwritten for a subsequent message in the same
2557 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2558 the caching.)
bbe902f0 2559
ea3a6f44
NM
256038. Sometimes the final signoff response after QUIT could fail to get
2561 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2562 < 0 before doing a fflush(). This bug looks as though it goes back to the
2563 introduction of TLS in release 3.20, but "sometimes" must have been rare
2564 because the tests only now provoked it.
bbe902f0
PH
2565
2566
495ae4b0
PH
2567Exim version 4.43
2568-----------------
2569
2570 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2571 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2572 Now it returns an integer. A number of calls were still expecting a T/F
2573 return. Fortuitously, in all cases, the tests worked in OK situations,
2574 which is the norm. However, things would have gone wrong on any write
2575 failures on the smtp file descriptor. This function is used when sending
2576 messages over SMTP and also when doing verify callouts.
2577
2578 2. When Exim is called to do synchronous delivery of a locally submitted
2579 message (the -odf or -odi options), it no longer closes stderr before doing
2580 the delivery.
2581
2582 3. Implemented the mua_wrapper option.
2583
2584 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2585
2586 5. Implemented the functions header_remove(), header_testname(),
2587 header_add_at_position(), and receive_remove_recipient(), and exported them
2588 to local_scan().
2589
2590 6. If an ACL "warn" statement specified the addition of headers, Exim already
2591 inserted X-ACL-Warn: at the start if there was no header name. However, it
2592 was not making this test for the second and subsequent header lines if
2593 there were newlines in the string. This meant that an invalid header could
2594 be inserted if Exim was badly configured.
2595
2596 7. Allow an ACL "warn" statement to add header lines at the start or after all
2597 the Received: headers, as well as at the end.
2598
2599 8. Added the rcpt_4xx retry error code.
2600
2601 9. Added postmaster_mailfrom=xxx to callout verification option.
2602
260310. Added mailfrom=xxxx to the callout verification option, for verify=
2604 header_sender only.
2605
260611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2607 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2608
260912. Inserted some casts to stop certain compilers warning when using pointer
2610 differences as field lengths or precisions in printf-type calls (mostly
2611 affecting debugging statements).
2612
261313. Added optional readline() support for -be (dynamically loaded).
2614
261514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2616 same clock tick as a message's arrival, so that its received time was the
2617 same as the "first fail" time on the retry record, and that message
2618 remained on the queue past the ultimate address timeout, every queue runner
2619 would try a delivery (because it was past the ultimate address timeout) but
2620 after another failure, the ultimate address timeout, which should have then
2621 bounced the address, did not kick in. This was a "< instead of <=" error;
2622 in most cases the first failure would have been in the next clock tick
2623 after the received time, and all would be well.
2624
262515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2626 being recognized when the domain list was tested by the match_domain
2627 condition in an expansion string.
2628
262916. Added the ${str2b64: operator.
2630
263117. Exim was always calling setrlimit() to set a large limit for the number of
2632 processes, without checking whether the existing limit was already
2633 adequate. (It did check for the limit on file descriptors.) Furthermore,
2634 errors from getrlimit() and setrlimit() were being ignored. Now they are
2635 logged to the main and panic logs, but Exim does carry on, to try to do its
2636 job under whatever limits there are.
2637
263818. Imported PCRE 5.0.
2639
264019. Trivial typo in log message " temporarily refused connection" (the leading
2641 space).
2642
264320. If the log selector return_path_on_delivery was set and an address was
2644 redirected to /dev/null, the delivery process crashed because it assumed
2645 that a return path would always be set for a "successful" delivery. In this
2646 case, the whole delivery is bypassed as an optimization, and therefore no
2647 return path is set.
2648
264921. Internal re-arrangement: the function for sending a challenge and reading
2650 a response while authentication was assuming a zero-terminated challenge
2651 string. It's now changed to take a pointer and a length, to allow for
2652 binary data in such strings.
2653
265422. Added the cyrus_sasl authenticator (code supplied by MBM).
2655
265623. Exim was not respecting finduser_retries when seeking the login of the
2657 uid under which it was called; it was always trying 10 times. (The default
2658 setting of finduser_retries is zero.) Also, it was sleeping after the final
2659 failure, which is pointless.
2660
266124. Implemented tls_on_connect_ports.
2662
266325. Implemented acl_smtp_predata.
2664
266526. If the domain in control=submission is set empty, Exim assumes that the
2666 authenticated id is a complete email address when it generates From: or
2667 Sender: header lines.
2668
266927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2670 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2671 chown and chgrp in /bin and hostname in /usr/bin.
2672
267328. Exim was keeping the "process log" file open after each use, just as it
2674 does for the main log. This opens the possibility of it remaining open for
2675 long periods when the USR1 signal hits a daemon. Occasional processlog
2676 errors were reported, that could have been caused by this. Anyway, it seems
2677 much more sensible not to leave this file open at all, so that is what now
2678 happens.
2679
268029. The long-running daemon process does not normally write to the log once it
2681 has entered its main loop, and it closes the log before doing so. This is
2682 so that log files can straightforwardly be renamed and moved. However,
2683 there are a couple of unusual error situations where the daemon does write
2684 log entries, and I had neglected to close the log afterwards.
2685
268630. The text of an SMTP error response that was received during a remote
2687 delivery was being truncated at 512 bytes. This is too short for some of
2688 the long messages that one sometimes sees. I've increased the limit to
2689 1024.
2690
269131. It is now possible to make retry rules that apply only when a message has a
2692 specific sender, in particular, an empty sender.
2693
269432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2695 it possible to be selective about when SMTP synchronization is enforced.
2696
269733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2698
269932. Implemented hosts_connection_nolog.
2700
270133. Added an ACL for QUIT.
2702
270334. Setting "delay_warning=" to disable warnings was not working; it gave a
2704 syntax error.
2705
270635. Added mailbox_size and mailbox_filecount to appendfile.
2707
270836. Added control = no_multiline_responses to ACLs.
2709
271037. There was a bug in the logic of the code that waits for the clock to tick
2711 in the case where the clock went backwards by a substantial amount such
2712 that the microsecond fraction of "now" was more than the microsecond
2713 fraction of "then" (but the whole seconds number was less).
2714
271538. Added support for the libradius Radius client library this is found on
2716 FreeBSD (previously only the radiusclient library was supported).
2717
2718
2719Exim version 4.42
2720-----------------
2721
2722 1. When certain lookups returned multiple values in the form name=value, the
2723 quoting of the values was not always being done properly. Specifically:
2724 (a) If the value started with a double quote, but contained no whitespace,
2725 it was not quoted.
2726 (b) If the value contained whitespace other than a space character (i.e.
2727 tabs or newlines or carriage returns) it was not quoted.
2728 This fix has been applied to the mysql and pgsql lookups by writing a
2729 separate quoting function and calling it from the lookup code. The fix
2730 should probably also be applied to nisplus, ibase and oracle lookups, but
2731 since I cannot test any of those, I have not disturbed their existing code.
2732
2733 2. A hit in the callout cache for a specific address caused a log line with no
2734 reason for rejecting RCPT. Now it says "Previous (cached) callout
2735 verification failure".
2736
2737 3. There was an off-by-one bug in the queryprogram router. An over-long
2738 return line was truncated at 256 instead of 255 characters, thereby
2739 overflowing its buffer with the terminating zero. As well as fixing this, I
2740 have increased the buffer size to 1024 (and made a note to document this).
2741
2742 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2743 when Exim is waiting for an SMTP response from a remote server, Exim
2744 restarts its select() call on the socket, thereby resetting its timeout.
2745 This is not a problem when such interrupts are rare. Somebody set up a cron
2746 job to run exiwhat every 2 minutes, which is less than the normal select()
2747 timeout (5 or 10 minutes). This meant that the select() timeout never
2748 kicked in because it was always reset. I have fixed this by comparing the
2749 time when an interrupt arrives with the time at the start of the first call
2750 to select(). If more time than the timeout has elapsed, the interrupt is
2751 treated as a timeout.
2752
2753 5. Some internal re-factoring in preparation for the addition of Sieve
2754 extensions (by MH). In particular, the "personal" test is moved to a
2755 separate function, and given an option for scanning Cc: and Bcc: (which is
2756 not set for Exim filters).
2757
2758 6. When Exim created an email address using the login of the caller as the
2759 local part (e.g. when creating a From: or Sender: header line), it was not
2760 quoting the local part when it contained special characters such as @.
2761
2762 7. Installed new OpenBSD configuration files.
2763
2764 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2765 try to make them clearer.
2766
2767 9. Callout options, other than the timeout value, were being ignored when
2768 verifying sender addresses in header lines. For example, when using
2769
2770 verify = header_sender/callout=no_cache
2771
2772 the cache was (incorrectly) being used.
2773
277410. Added a missing instance of ${EXE} to the exim_install script; this affects
2775 only the Cygwin environment.
2776
277711. When return_path_on_delivery was set as a log selector, if different remote
2778 addresses in the same message used different return paths and parallel
2779 remote delivery occurred, the wrong values would sometimes be logged.
2780 (Whenever a remote delivery process finished, the return path value from
2781 the most recently started remote delivery process was logged.)
2782
278312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2784 lines when AUTH and/or TLS are in use. This is the "received protocol"
2785 field. Exim used to use "asmtp" for authenticated SMTP, without any
2786 indication (in the protocol name) for TLS use. Now it follows the RFC and
2787 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2788 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2789 names appear in log lines as well as in Received: header lines.
2790
279113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2792 extensions, and comparison tests, and to fix some bugs.
2793
279414. Changes to the "personal" filter test:
2795
2796 (1) The test was buggy in that it was just doing the equivalent of
2797 "contains" tests on header lines. For example, if a user's address was
2798 anne@some.where, the "personal" test would incorrectly be true for
2799
2800 To: susanne@some.where
2801
2802 This test is now done by extracting each address from the header in turn,
2803 and checking the entire address. Other tests that are part of "personal"
2804 are now done using regular expressions (for example, to check local parts
2805 of addresses in From: header lines).
2806
2807 (2) The list of non-personal local parts in From: addresses has been
2808 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2809 taken from the Sieve specification recommendations.
2810
2811 (3) If the message contains any header line starting with "List-" it is
2812 treated as non-personal.
2813
2814 (4) The test for "circular" in the Subject: header line has been removed
2815 because it now seems ill-conceived.
2816
281715. Minor typos in src/EDITME comments corrected.
2818
281916. Installed latest exipick from John Jetmore.
2820
282117. If headers_add on a router specified a text string that was too long for
2822 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2823 of string_sprintf() is now avoided.
2824
282518. $message_body_size was not set (it was always zero) when running the DATA
2826 ACL and the local_scan() function.
2827
282819. For the "mail" command in an Exim filter, no default was being set for
2829 the once_repeat time, causing a random time value to be used if "once" was
2830 specified. (If the value happened to be <= 0, no repeat happened.) The
2831 default is now 0s, meaning "never repeat". The "vacation" command was OK
2832 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2833 (I found it when inspecting the code).
2834
283520. There is now an overall timeout for performing a callout verification. It
2836 defaults to 4 times the callout timeout, which applies to individual SMTP
2837 commands during the callout. The overall timeout applies when there is more
2838 than one host that can be tried. The timeout is checked before trying the
2839 next host. This prevents very long delays if there are a large number of
2840 hosts and all are timing out (e.g. when the network connections are timing
2841 out). The value of the overall timeout can be changed by specifying an
2842 additional sub-option for "callout", called "maxwait". For example:
2843
2844 verify = sender/callout=5s,maxwait=20s
2845
284621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2847 to the end before writing, but this should make it even safer).
2848
284922. Exim was forgetting that it had advertised PIPELINING for the second and
2850 subsequent messages on an SMTP connection. It was also not resetting its
2851 memory on STARTTLS and an internal HELO.
2852
285323. When Exim logs an SMTP synchronization error within a session, it now
2854 records whether PIPELINING has been advertised or not.
2855
285624. Added 3 instances of "(long int)" casts to time_t variables that were being
2857 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2858 rather than long int.
2859
286025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2861
286226. Added the never_mail option to autoreply.
2863
2864
2865Exim version 4.41
2866-----------------
2867
2868 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2869 crash if the getsockname() call failed; this can happen if a connection is
2870 closed very soon after it is established. The problem was simply in the
2871 order in which certain operations were done, causing Exim to try to write
2872 to the SMTP stream before it had set up the file descriptor. The bug has
2873 been fixed by making things happen in the correct order.
2874
2875
2876Exim version 4.40
2877-----------------
2878
2879 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2880 before the connection was closed, thus losing the rejection response.
2881
2882 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2883 some early Solaris releases, but causes trouble in current releases where
2884 socklen_t is defined.
2885
2886 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2887 always exist.
2888
2889 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2890 configured.
2891
2892 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2893 that releasing the top of it at the end releases what was used for sub-
2894 expansions (unless the block got too big). However, discard this block if
2895 the first thing is a variable or header, so that we can use its block when
2896 it is dynamic (useful for very large $message_headers, for example).
2897
2898 6. Lookups now cache *every* query, not just the most recent. A new, separate
2899 store pool is used for this. It can be recovered when all lookup caches are
2900 flushed. Lookups now release memory at the end of their result strings.
2901 This has involved some general refactoring of the lookup sources.
2902
2903 7. Some code has been added to the store_xxx() functions to reduce the amount
2904 of flapping under certain conditions.
2905
2906 8. log_incoming_interface used to affect only the <= reception log lines. Now
2907 it causes the local interface and port to be added to several more SMTP log
2908 lines, for example "SMTP connection from", and rejection lines.
2909
2910 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2911
291210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2913
291411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2915 could be overwritten at the end of the current message (or the start of a
2916 new message if it was set in a HELO ACL). The value is now preserved for
2917 the duration of the SMTP connection.
2918
291912. If a transport had a headers_rewrite setting, and a matching header line
2920 contained an unqualified address, that address was qualified, even if it
2921 did not match any rewriting rules. The underlying bug was that the values
2922 of the flags that permit the existence of unqualified sender and recipient
2923 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2924 non-local messages, and by -bnq for local messages) were not being
2925 preserved with the message after it was received.
2926
292713. When Exim was logging an SMTP synchronization error, it could sometimes log
2928 "next input=" as part of the text comprising the host identity instead of
2929 the correct text. The code was using the same buffer for two different
2930 strings. However, depending on which order the printing function evaluated
2931 its arguments, the bug did not always show up. Under Linux, for example, my
2932 test suite worked just fine.
2933
293414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2935 doesn't work with some older versions of Perl. It has been changed to "my",
2936 which in any case is probably the better facility to use.
2937
293815. A really picky compiler found some instances of statements for creating
2939 error messages that either had too many or two few arguments for the format
2940 string.
2941
294216. The size of the buffer for calls to the DNS resolver has been increased
2943 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2944 for addresses that have a lot of PTR records. This alleviates a problem; it
2945 does not fully solve it.
2946
294717. A dnsdb lookup for PTR records that receives more data than will fit in the
2948 buffer now truncates the list and logs the incident, which is the same
2949 action as happens when Exim is looking up a host name and its aliases.
2950 Previously in this situation something unpredictable would happen;
2951 sometimes it was "internal error: store_reset failed".
2952
295318. If a server dropped the connection unexpectedly when an Exim client was
2954 using GnuTLS and trying to read a response, the client delivery process
2955 crashed while trying to generate an error log message.
2956
295719. If a "warn" verb in an ACL added multiple headers to a message in a single
2958 string, for example:
2959
2960 warn message = H1: something\nH2: something
2961
2962 the text was added as a single header line from Exim's point of view
2963 though it ended up OK in the delivered message. However, searching for the
2964 second and subsequent header lines using $h_h2: did not work. This has been
2965 fixed. Similarly, if a system filter added multiple headers in this way,
2966 the routers could not see them.
2967
296820. Expanded the error message when iplsearch is called with an invalid key to
2969 suggest using net-iplsearch in a host list.
2970
297121. When running tests using -bh, any delays imposed by "delay" modifiers in
2972 ACLs are no longer actually imposed (and a message to that effect is
2973 output).
2974
297522. If a "gecos" field in a passwd entry contained escaped characters, in
2976 particular, if it contained a \" sequence, Exim got it wrong when building
2977 a From: or a Sender: header from that name. A second bug also caused
2978 incorrect handling when an unquoted " was present following a character
2979 that needed quoting.
2980
298123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2982 was not being matched caselessly.
2983
298424. Arranged for all hyphens in the exim.8 source to be escaped with
2985 backslashes.
2986
298725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2988 properly. Recipient callout cache records were still being keyed to include
2989 the sender, even when use_sender was set false. This led to far more
2990 callouts that were necessary. The sender is no longer included in the key
2991 when use_sender is false.
2992
299326. Added "control = submission" modifier to ACLs.
2994
299527. Added the ${base62d: operator to decode base 62 numbers.
2996
299728. dnsdb lookups can now access SRV records.
2998
299929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3000 the configuration file.
3001
300230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3003 (-v) mode. This makes the output for a verbose queue run more intelligible.
3004
300531. Added a use_postmaster feature to recipient callouts.
3006
300732. Added the $body_zerocount variable, containing the number of binary zero
3008 bytes in the message body.
3009
301033. The time of last modification of the "new" subdirectory is now used as the
3011 "mailbox time last read" when there is a quota error for a maildir
3012 delivery.
3013
301434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3015
301635. Added +ignore_unknown as a special item in host lists.
3017
301836. Code for decoding IPv6 addresses in host lists is now included, even if
3019 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3020 address was recognized as an IP address, but was then not correctly decoded
3021 into binary, causing unexpected and incorrect effects when compared with
3022 another IP address.
3023
3024
3025Exim version 4.34
3026-----------------
3027
3028 1. Very minor rewording of debugging text in manualroute to say "list of
3029 hosts" instead of "hostlist".
3030
3031 2. If verify=header_syntax was set, and a header line with an unqualified
3032 address (no domain) and a large number of spaces between the end of the
3033 name and the colon was received, the reception process suffered a buffer
3034 overflow, and (when I tested it) crashed. This was caused by some obsolete
3035 code that should have been removed. The fix is to remove it!
3036
3037 3. When running in the test harness, delay a bit after writing a bounce
3038 message to get a bit more predictability in the log output.
3039
3040 4. Added a call to search_tidyup() just before forking a reception process. In
3041 theory, someone could use a lookup in the expansion of smtp_accept_max_
3042 per_host which, without the tidyup, could leave open a database connection.
3043
3044 5. Added the variables $recipient_data and $sender_data which get set from a
3045 lookup success in an ACL "recipients" or "senders" condition, or a router
3046 "senders" option, similar to $domain_data and $local_part_data.
3047
3048 6. Moved the writing of debug_print from before to after the "senders" test
3049 for routers.
3050
3051 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3052 problems for message scanning, either using a data ACL, or using
3053 local_scan() because the Received: header was not generated till after they
3054 were called (in order to set the time as the time of reception completion).
3055 I have revised the way this works. The header is now generated after the
3056 body is received, but before the ACL or local_scan() are called. After they
3057 are run, the timestamp in the header is updated.
3058
3059
3060Exim version 4.33
3061-----------------
3062
3063 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3064 before starting a queue runner without re-exec. This happened only when
3065 deliver_drop_privilege was set or when the Exim user was set to root. The
3066 effect of the bug was that timeouts during subsequent deliveries caused
3067 crashes instead of being properly handled. The handler is now left at its
3068 default (and expected) setting.
3069
3070 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3071 message, again when deliver_drop_privilege is set or Exim is run as root.
3072 The bug described in (1) was not present in this case, but the tidying up
3073 of the other signals was missing. I have made the two cases consistent.
3074
3075 3. The ignore_target_hosts setting on a manualroute router was being ignored
3076 for hosts that were looked up using the /MX notation.
3077
3078 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3079 in domain lists.
3080
3081 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3082 operated on the sender address. After changing the $sender_address to <>
3083 for the sender address verify, Exim was re-instated it as the original
3084 (before rewriting) address, but remembering that it had rewritten it, so it
3085 wasn't rewriting it again. This bug also had the effect of breaking the
3086 sender address verification caching when the sender address was rewritten.
3087
3088 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3089 This has been changed so that if the ip literal address matches
3090 ignore_target_hosts, the router declines.
3091
3092 7. Added expansion conditions match_domain, match_address, and match_local_
3093 part (NOT match_host).
3094
3095 8. The placeholder for the Received: header didn't have a length field set.
3096
3097 9. Added code to Exim itself and to exim_lock to test for a specific race
3098 condition that could lead to file corruption when using MBX delivery. The
3099 issue is with the lockfile that is created in /tmp. If this file is removed
3100 after a process has opened it but before that process has acquired a lock,
3101 there is the potential for a second process to recreate the file and also
3102 acquire a lock. This could lead to two Exim processes writing to the file
3103 at the same time. The added code performs the same test as UW imapd; it
3104 checks after acquiring the lock that its file descriptor still refers to
3105 the same named file.
3106
310710. The buffer for building added header lines was of fixed size, 8192 bytes.
3108 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3109 when Exim is built.
3110
311111. Added the smtp_active_hostname option. If used, this will typically be made
3112 to depend on the incoming interface address. Because $interface_address is
3113 not set up until the daemon has forked a reception process, error responses
3114 that can happen earlier (such as "too many connections") no longer contain
3115 a host name.
3116
311712. If an expansion in a condition on a "warn" statement fails because a lookup
3118 defers, the "warn" statement is abandoned, and the next ACL statement is
3119 processed. Previously this caused the whole ACL to be aborted.
3120
312113. Added the iplsearch lookup type.
3122
312314. Added ident_timeout as a log selector.
3124
312515. Added tls_certificate_verified as a log selector.
3126
312716. Added a global option tls_require_ciphers (compare the smtp transport
3128 option of the same name). This controls incoming TLS connections.
3129
313017. I finally figured out how to make tls_require_ciphers do a similar thing
3131 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3132 before starting the TLS session.
3133
313418. Tabs are now shown as \t in -bP output.
3135
313619. If the log selector return_path_on_delivery was set, Exim crashed when
3137 bouncing a message because it had too many Received: header lines.
3138
313920. If two routers both had headers_remove settings, and the first one included
3140 a superfluous trailing colon, the final name in the first list and the
3141 first name in the second list were incorrectly joined into one item (with a
3142 colon in the middle).
3143
3144
3145Exim version 4.32
3146-----------------
3147
3148 1. Added -C and -D options to the exinext utility, mainly to make it easier
3149 to include in the automated testing, but these could be helpful when
3150 multiple configurations are in use.
3151
3152 2. The exinext utility was not formatting the output nicely when there was
3153 an alternate port involved in the retry record key, nor when there was a
3154 message id as well (for retries that were specific to a specific message
3155 and a specific host). It was also confused by IPv6 addresses, because of
3156 the additional colons they contain. I have fixed the IPv4 problem, and
3157 patched it up to do a reasonable job for IPv6.
3158
3159 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3160 delivery, the log line now contains "pipelined" if PIPELINING was used.
3161
3162 4. An SMTP transport process used to panic and die if the bind() call to set
3163 an explicit outgoing interface failed. This has been changed; it is now
3164 treated in the same way as a connect() failure.
3165
3166 5. A reference to $sender_host_name in the part of a conditional expansion
3167 that was being skipped was still causing a DNS lookup. This no longer
3168 occurs.
3169
3170 6. The def: expansion condition was not recognizing references to header lines
3171 that used bh_ and bheader_.
3172
3173 7. Added the _cache feature to named lists.
3174
3175 8. The code for checking quota_filecount in the appendfile transport was
3176 allowing one more file than it should have been.
3177
3178 9. For compatibility with Sendmail, the command line option
3179
3180 -prval:sval
3181
3182 is equivalent to
3183
3184 -oMr rval -oMs sval
3185
3186 and sets the incoming protocol and host name (for trusted callers). The
3187 host name and its colon can be omitted when only the protocol is to be set.
3188 Note the Exim already has two private options, -pd and -ps, that refer to
3189 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3190 "s", but I don't think that's a major issue.
3191
319210. A number of refactoring changes to the code, none of which should affect
3193 Exim's behaviour:
3194
3195 (a) The number of logging options was getting close to filling up the
3196 32-bit word that was used as a bit map. I have split them into two classes:
3197 those that are passed in the argument to log_write(), and those that are
3198 only ever tested independently outside of that function. These are now in
3199 separate 32-bit words, so there is plenty of room for expansion again.
3200 There is no change in the user interface or the logging behaviour.
3201
3202 (b) When building, for example, log lines, the code previously used a
3203 macro that called string_cat() twice, in order to add two strings. This is
3204 not really sufficiently general. Furthermore, there was one instance where
3205 it was actually wrong because one of the argument was used twice, and in
3206 one call a function was used. (As it happened, calling the function twice
3207 did not affect the overall behaviour.) The macro has been replaced by a
3208 function that can join an arbitrary number of extra strings onto a growing
3209 string.
3210
3211 (c) The code for expansion conditions now uses a table and a binary chop
3212 instead of a serial search (which was left over from when there were very
3213 few conditions). Also, it now recognizes conditions like "pam" even when
3214 the relevant support is not compiled in: a suitably worded error message is
3215 given if an attempt is made to use such a condition.
3216
321711. Added ${time_interval:xxxxx}.
3218
321912. A bug was causing one of the ddress fields not to be passed back correctly
3220 from remote delivery subprocesses. The field in question was not being
3221 subsequently used, so this caused to problems in practice.
3222
322313. Added new log selectors queue_time and deliver_time.
3224
322514. Might have fixed a bug in maildirsizefile handling that threw up
3226 "unexpected character" debug warnings, and recalculated the data
3227 unnecessarily. In any case, I expanded the warning message to give more
3228 information.
3229
323015. Added the message "Restricted characters in address" to the statements in
3231 the default ACL that block characters like @ and % in local parts.
3232
323316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3234 Three changes have been made:
3235
3236 (a) There was a serious bug; a negative response to MAIL caused the whole
3237 recipient domain to be cached as invalid, thereby blocking all messages
3238 to all local parts at the same domain, from all senders. This bug has
3239 been fixed. The domain is no longer cached after a negative response to
3240 MAIL if the sender used is not empty.
3241
3242 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3243 been restored.
3244
3245 (c) A new callout option, "use_sender" has been added for people who want
3246 the modified behaviour.
3247
3248
3249Exim version 4.31
3250-----------------
3251
3252 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3253 Larry Rosenman.
3254
3255 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3256 indeed breaks things for older releases.
3257
3258 3. Added additional logging to the case where there is a problem reading data
3259 from a filter that is running in a subprocess using a pipe, in order to
3260 try to track down a specific problem.
3261
3262 4. Testing facility fudge: when running in the test harness and attempting
3263 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3264 getting "No route to host". Convert this to a timeout.
3265
3266 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3267 warning.
3268
3269 6. Some OS don't have socklen_t but use size_t instead. This affects the
3270 fifth argument of getsockopt() amongst other things. This is now
3271 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3272 can be set for individual OS. I have set it for SunOS5, OSF1, and
3273 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3274 some earlier ones do not.
3275
3276 7. Change 4.30/15 was not doing the test caselessly.
3277
3278 8. The standard form for an IPv6 address literal was being rejected by address
3279 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3280 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3281 this, as well as the form without the "IPv6" on the front (but only when
3282 address literals are enabled, of course).
3283
3284 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3285
328610. Exim crashed if a message with an empty sender address specified by -f
3287 encountered a router with an errors_to setting. This could be provoked only
3288 by a command such as
3289
3290 exim -f "" ...
3291
3292 where an empty string was supplied; "<>" did not hit this bug.
3293
329411. Installed PCRE release 4.5.
3295
329612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3297 remained set. It is now erased.
3298
329913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3300 times from message ids (which are base 36 rather than the normal 62).
3301
330214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3303 were being counted as actual protocol errors, and logged if the log
3304 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3305 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3306 and DATA following a set of rejected RCPTs do not count as protocol errors.
3307 In other words, Exim assumes they were pipelined, though this may not
3308 actually be the case. Of course, in all cases the client gets an
3309 appropriate error code.
3310
331115. If a lookup fails in an ACL condition, a message about the failure may
3312 be available; it is used if testing the ACL cannot continue, because most
3313 such messages specify what the cause of the deferral is. However, some
3314 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3315 that caused an old message to be retained and used if a later statement
3316 caused a defer, replacing the real cause of the deferral.
3317
331816. If an IP address had so many PTR records that the DNS lookup buffer
3319 was not large enough to hold them, Exim could crash while trying to process
3320 the truncated data. It now detects and logs this case.
3321
332217. Further to 4.21/58, another change has been made: if (and only if) the
3323 first line of a message (the first header line) ends with CRLF, a bare LF
3324 in a subsequent header line has a space inserted after it, so as not to
3325 terminate the header.
3326
332718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3328 unnecessarily, used atoi() instead of strtol(), and didn't check the
3329 termination when getting file sizes from file names by regex.
3330
333119. Completely re-implemented the support for maildirsize files, in the light
3332 of a number of problems with the previous contributed implementation
3333 (4.30/29). In particular:
3334
3335 . If the quota is zero, the maildirsize file is maintained, but no quota is
3336 imposed.
3337
3338 . If the maildir directory does not exist, it is created before any attempt
3339 to write a maildirsize file.
3340
3341 . The quota value in the file is just a cache; if the quota is changed in
3342 the transport, the new value overrides.
3343
3344 . A regular expression is available for excluding directories from the
3345 count.
3346
334720. The autoreply transport checks the characters in options that define the
3348 message's headers; it allows continued headers, but it was checking with
3349 isspace() after an embedded newline instead of explicitly looking for a
3350 space or a tab.
3351
335221. If all the "regular" hosts to which an address was routed had passed their
3353 expiry times, and had not reached their retry times, the address was
3354 bounced, even if fallback hosts were defined. Now Exim should go on to try
3355 the fallback hosts.
3356
335722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3358 equivalent code in the SMTP transport. Some hosts send humungous responses
3359 to HELO/EHLO, more than 1024 it seems.
3360
336123. Refactoring: code in filter.c used (void *) for "any old type" but this
3362 gives compiler warnings in some environments. I've now done it "properly",
3363 using a union.
3364
336524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3366 (because of problems with the built-in one) was declared to return uschar *
3367 instead of char *, causing compiler failure.
3368
336925. Fixed a file descriptor leak when processing alias/forward files.
3370
337126. Fixed a minor format string issue in dbfn.c.
3372
337327. Typo in exim.c: ("dmbnz" for "dbmnz").
3374
337528. If a filter file refered to $h_xxx or $message_headers, and the headers
3376 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3377 become corrupted.
3378
337929. When a sender address is verified, it is cached, to save repeating the test
3380 when there is more than one recipient in a message. However, when the
3381 verification involves a callout, it is possible for different callout
3382 options to be set for different recipients. It is too complicated to keep
3383 track of this in the cache, so now Exim always runs a verification when a
3384 callout is required, relying on the callout cache for the optimization.
3385 The overhead is duplication of the address routing, but this should not be
3386 too great.
3387
338830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3389 to be verified with callout=postmaster, and the main callout worked but the
3390 postmaster check failed, the verification correctly failed. However, if a
3391 subsequent RCPT command asked for sender verification *without* the
3392 postmaster check, incorrect caching caused this verification also to fail,
3393 incorrectly.
3394
339531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3396 it was not caching the DNS options (qualify_single, search_parents) that
3397 were used when the lookup failed. A subsequent lookup with different
3398 options therefore always gave the same answer, though there were cases
3399 where it should not have. (Example: a "domains = !$mx_any" option on a
3400 dnslookup router: the "domains" option is always processed without any
3401 widening, but the router might have qualify_single set.) Now Exim uses the
3402 cached value only when the same options are set.
3403
340432. Added John Jetmore's "exipick" utility to the distribution.
3405
340633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3407 than a timeout (e.g. a certificate is required, and is not provided), an
3408 Exim server now closes the connection immediately. Previously it waited for
3409 the client to close - but if the client is SSL, it seems that they each
3410 wait for each other, leading to a delay before one of them times out.
3411
341234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3413 maintained 0.8.x compatibility because I don't think many are using it, and
3414 it is clearly obsolete.
3415
341635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3417 transport.
3418
341936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3420 client certificate was expired. A simple patch fixes this, though I don't
3421 understand the full logic of why the verify callback is called multiple
3422 times.
3423
342437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3425 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3426 which causes problems with some clients (such as the Certicom SSL Plus
3427 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3428 disables the coutermeasure allowing Eudora to connect."
3429
343038. Exim was not checking that a write() to a log file succeeded. This could
3431 lead to Bad Things if a log got too big, in particular if it hit a file
3432 size limit. Exim now panics and dies if it cannot write to a log file, just
3433 as it does if it cannot open a log file.
3434
343539. Modified OS/Makefile-Linux so that it now contains
3436
3437 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3438
3439 The two -D definitions ensure that Exim is compiled with large file
3440 support, which makes it possible to handle log files that are bigger than
3441 2^31.
3442
344340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3444 instance) a domain was checked against a named list that involved a lookup,
3445 causing $domain_data to be set, then another domain was checked against the
3446 same list, then the first domain was re-checked, the value of $domain_data
3447 after the final check could be wrong. In particular, if the second check
3448 failed, it could be set empty. This bug probably also applied to
3449 $localpart_data.
3450
345141. The strip_trailing_dot option was not being applied to the address given
3452 with the -f command-line option.
3453
345442. The code for reading a message's header from the spool was incrementing
3455 $received_count, but never initializing it. This meant that the value was
3456 incorrect (doubled) while delivering a message in the same process in which
3457 it was received. In the most common configuration of Exim, this never
3458 happens - a fresh exec is done - but it can happen when
3459 deliver_drop_privilege is set.
3460
346143. When Exim logs an SMTP synchronization error - client data sent too soon -
3462 it now includes up to 150 characters of the unexpected data in the log
3463 line.
3464
346544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3466 and building data strings. The size of both of these buffers was 10 000
3467 bytes - far larger than anybody would *ever* want, thought I. Needless to
3468 say, somebody hit the limit. I have increased the maximum line length to
3469 20 000 and the maximum data length of concatenated lines to 100 000. I have
3470 also fixed two bugs, because there was no checking on these buffers. Tsk,
3471 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3472 buffer is too small.
3473
347445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3475 lsearch lookups. Now it does.
3476
347746. When parsing a route_list item in a manualroute router, a fixed-length
3478 buffer was used for the list of hosts. I made this 1024 bytes long,
3479 thinking that nobody would ever have a list of hosts that long. Wrong.
3480 Somebody had a whole pile of complicated expansion conditions, and the
3481 string was silently truncated, leading to an expansion error. It turns out
3482 that it is easier to change to an unlimited length (owing to other changes
3483 that have happened since this code was originally written) than to build
3484 structure for giving a limitation error. The length of the item that
3485 expands into the list of hosts is now unlimited.
3486
348747. The lsearch lookup could not handle data where the length of text line was
3488 more than 4095 characters. Such lines were truncated, leading to shortened
3489 data being returned. It should now handle lines of any length.
3490
349148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3492 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3493 ACL").
3494
349549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3496 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3497 no longer happens in comment lines. A list of replacements is now placed
3498 at the head of all of the source files, except those whose only change is
3499 to replace PERL_COMMAND in the very first #! line.
3500
350150. Replaced the slow insertion sort in queue.c, for sorting the list of
3502 messages on the queue, with a bottom-up merge sort, using code contributed
3503 by Michael Haardt. This should make operations like -bp somewhat faster on
3504 large queues. It won't affect queue runners, except when queue_run_in_order
3505 is set.
3506
350751. Installed eximstats 1.31 in the distribution.
3508
350952. Added support for SRV lookups to the dnslookup router.
3510
351153. If an ACL referred to $message_body or $message_body_end, the value was not
3512 reset for any messages that followed in the same SMTP session.
3513
351454. The store-handling optimization for building very long strings was not
3515 differentiating between the different store pools. I don't think this
3516 actually made any difference in practice, but I've tidied it.
3517
351855. While running the routers to verify a sender address, $sender_address
3519 was still set to the sender address. This is wrong, because when routing to
3520 send a bounce to the sender, it would be empty. Therefore, I have changed
3521 it so that, while verifying a sender address, $sender_address is set to <>.
3522 (There is no change to what happens when verifying a recipient address.)
3523
352456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3525 target A or AAAA records (if not already returned) without resetting the
3526 qualify_single or search_parents options of the DNS resolver. These are
3527 inappropriate in this case because the targets of MX and SRV records must
3528 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3529 target that, when qualified, matched something in the local domain. These
3530 two options are now turned off when doing these lookups.
3531
353257. It seems that at least some releases of Reiserfs (which does not have the
3533 concept of a fixed number of inodes) returns zero and not -1 for the
3534 number of available inodes. This interacted badly with check_spool_inodes,
3535 which assumed that -1 was the "no such thing" setting. What I have done is
3536 to check that the total number of inodes is greater than zero before doing
3537 the test of how many are available.
3538
353958. When a "warn" ACL statement has a log_message modifier, the message is
3540 remembered, and not repeated. This is to avoid a lot of repetition when a
3541 message has many recipients that cause the same warning to be written.
3542 Howewer, Exim was preserving the list of already written lines for an
3543 entire SMTP session, which doesn't seem right. The memory is now reset if a
3544 new message is started.
3545
354659. The "rewrite" debugging flag was not showing the result of rewriting in the
3547 debugging output unless log_rewrite was also set.
3548
354960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3550 of (int)(handle) when we know that handle contains (void *)(-1).
3551
355261. The Exim daemon panic-logs an error return when it closes the incoming
3553 connection. However "connection reset by peer" seems to be common, and
3554 isn't really an error worthy of noting specially, so that particular error
3555 is no long logged.
3556
355762. When Exim is trying to find all the local interfaces, it used to panic and
3558 die if the ioctl to get the interface flags failed. However, it seems that
3559 on at least one OS (Solaris 9) it is possible to have an interface that is
3560 included in the list of interfaces, but for which you get a failure error
3561 for this call. This happens when the interface is not "plumbed" into a
3562 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3563 failure of the "get flags" call assumes that the interface is down.
3564
356563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3566 makes life easier for people who are doing arithmetic on fields extracted
3567 from dates, where you often get leading zeros that should not be
3568 interpreted as octal.
3569
357064. Added qualify_domain to the redirect router, to override the global
3571 setting.
3572
357365. If a pathologically long header line contained very many addresses (the
3574 report of this problem mentioned 10 000) and each of them was rewritten,
3575 Exim could use up a very large amount of memory. (It kept on making new
3576 copies of the header line as it rewrote, and never released the old ones.)
3577 At the expense of a bit more processing, the header rewriting function has
3578 been changed so that it no longer eats memory in this way.
3579
358066. The generation of the Received: header has been moved from the time that a
3581 message starts to be received, to the time that it finishes. The timestamp
3582 in the Received: header should now be very close to that of the <= log
3583 line. There are two side-effects of this change:
3584
3585 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3586 logged header lines no longer include the local Received: line, because
3587 it has not yet been created. The same applies to a copy of the message