Heiko Schlitterman's patch for log_selector=+pid, plus appropriate
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
f3f065bb 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.467 2007/01/31 16:52:12 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
b4ed4da0 74
5dd1517f
PH
75Exim version 4.66
76-----------------
77
78PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
79 fixed by 4.65/MH/01 (is this a record?) are fixed:
80
81 (i) An empty string was always treated as zero by the numeric comparison
82 operators. This behaviour has been restored.
83
84 (ii) It is documented that the numeric comparison operators always treat
85 their arguments as decimal numbers. This was broken in that numbers
86 starting with 0 were being interpreted as octal.
87
88 While fixing these problems I realized that there was another issue that
89 hadn't been noticed. Values of message_size_limit (both the global option
90 and the transport option) were treated as octal if they started with 0.
91 The documentation was vague. These values are now always treated as
92 decimal, and I will make that clear in the documentation.
93
94
93cfa765
TK
95Exim version 4.65
96-----------------
97
98TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
99 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
100 versions. (#438)
101
d6066548
MH
102MH/01 Don't check that the operands of numeric comparison operators are
103 integers when their expansion is in "skipping" mode (fixes bug
104 introduced by 4.64-PH/07).
105
4362ff0d
PH
106PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
107 child addresses, Exim now panics and dies. Previously, because the count
108 is held in a short int, deliveries were likely to be lost. As such a
109 large number of recipients for a single message is ridiculous
110 (performance will be very, very poor), I have chosen to impose a limit
111 rather than extend the field.
112
93cfa765 113
944e9e9c
TF
114Exim version 4.64
115-----------------
aa41d2de 116
21d74bd9
TK
117TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
118 leftover -K file (the existence of which was triggered by #402).
119 While we were at it, introduced process PID as part of the -K
120 filename. This should rule out race conditions when creating
121 these files.
122
123TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
124 processing considerably. Previous code took too long for large mails,
125 triggering a timeout which in turn triggers #401.
126
127TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
128 in the DK code in transports.c. sendfile() is not really portable,
129 hence the _LINUX specificness.
944e9e9c
TF
130
131TF/01 In the add_headers option to the mail command in an Exim filter,
132 there was a bug that Exim would claim a syntax error in any
133 header after the first one which had an odd number of characters
134 in the field name.
135
2b1c6e3a
PH
136PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
137 callout verification, Exim cached a "reject" for the entire domain. This
138 is correct for most verifications, but it is not correct for a recipient
139 verification with use_sender or use_postmaster set, because in that case
140 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
141 case of MAIL FROM:<> rejection from other early rejections (e.g.
142 rejection of HELO). When verifying a recipient using a non-null MAIL
143 address, the cache is ignored if it shows MAIL FROM:<> rejection.
144 Whatever the result of the callout, the value of the domain cache is
145 left unchanged (for any other kind of callout, getting as far as trying
146 RCPT means that the domain itself is ok).
147
1f872c80
PH
148PH/02 Tidied a number of unused variable and signed/unsigned warnings that
149 gcc 4.1.1 threw up.
150
151PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
152 manifest itself as EPIPE rather than ECONNECT. When tidying away a
153 session, the daemon ignores ECONNECT errors and logs others; it now
154 ignores EPIPE as well.
155
d203e649
PH
156PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
157 (quoted-printable decoding).
158
cc2ed8f7 159PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 160 later the small subsequent patch to fix an introduced bug.
f951fd57 161
ddfcd446
PH
162PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
163
d45b1de8
PH
164PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
165
166PH/08 An error is now given if message_size_limit is specified negative.
167
38a0a95f 168PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 169 to be given (somewhat) arbitrary names.
38a0a95f 170
a2405d83
JJ
171JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
172 in 4.64-PH/09.
173
174JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
175 miscellaneous code fixes
176
6ea85e9a
PH
177PH/10 Added the log_reject_target ACL modifier to specify where to log
178 rejections.
179
26da7e20
PH
180PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
181 hostname. This is wrong, because it relates to the incoming message (and
182 probably the interface on which it is arriving) and not to the outgoing
183 callout (which could be using a different interface). This has been
184 changed to use the value of the helo_data option from the smtp transport
185 instead - this is what is used when a message is actually being sent. If
186 there is no remote transport (possible with a router that sets up host
187 addresses), $smtp_active_hostname is used.
6ea85e9a 188
14aa5a05 189PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 190 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
191 (a) The code assumed that strncpy() returns a negative number on buffer
192 overflow, which isn't the case. Replaced with Exim's string_format()
193 function.
194 (b) There were several signed/unsigned issues. I just did the minimum
195 hacking in of casts. There is scope for a larger refactoring.
196 (c) The code used strcasecmp() which is not a standard C function.
197 Replaced with Exim's strcmpic() function.
198 (d) The code set only $1; it now sets $auth1 as well.
199 (e) A simple test gave the error "authentication client didn't specify
200 service in request". It would seem that Dovecot has changed its
201 interface. Fortunately there's a specification; I followed it and
202 changed what the client sends and it appears to be working now.
203
ff75a1f7
PH
204PH/13 Added $message_headers_raw to provide the headers without RFC 2047
205 decoding.
206
e6f6568e
PH
207PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
208 address A is aliased to B and C, where B exists and C does not. Without
209 -v the output is "A verified" because verification stops after a
210 successful redirection if more than one address is generated. However,
211 with -v the child addresses are also verified. Exim was outputting "A
212 failed to verify" and then showing the successful verification for C,
213 with its parentage. It now outputs "B failed to verify", showing B's
214 parentage before showing the successful verification of C.
215
d6f6e0dc
PH
216PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
217 look up a TXT record in a specific list after matching in a combined
218 list.
219
322050c2
PH
220PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
221 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
222 they consult the DNS. I had assumed they would set it the way they
223 wanted; and indeed my experiments on Linux seem to show that in some
224 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
225 To be on the safe side, however, I have now made the interface to
226 host_find_byname() similar to host_find_bydns(), with an argument
227 containing the DNS resolver options. The host_find_byname() function now
228 sets these options at its start, just as host_find_bydns() does. The smtp
229 transport options dns_qualify_single and dns_search_parents are passed to
230 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
231 of host_find_byname() use the default settings of RES_DEFNAMES
232 (qualify_single) but not RES_DNSRCH (search_parents).
233
08955dd3
PH
234PH/17 Applied (a modified version of) Nico Erfurth's patch to make
235 spool_read_header() do less string testing, by means of a preliminary
236 switch on the second character of optional "-foo" lines. (This is
237 overdue, caused by the large number of possibilities that now exist.
238 Originally there were few.) While I was there, I also converted the
239 str(n)cmp tests so they don't re-test the leading "-" and the first
240 character, in the hope this might squeeze out yet more improvement.
241
1eccaa59
PH
242PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
243 flag allowing group syntax was set by the header_syntax check but not
244 turned off, possible causing trouble later; (2) The flag was not being
245 set at all for the header_verify test, causing "group"-style headers to
246 be rejected. I have now set it in this case, and also caused header_
247 verify to ignore an empty address taken from a group. While doing this, I
248 came across some other cases where the code for allowing group syntax
249 while scanning a header line wasn't quite right (mostly, not resetting
250 the flag correctly in the right place). These bugs could have caused
251 trouble for malformed header lines. I hope it is now all correct.
252
602e59e5
PH
253PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
254 with the "reply" argument non-NULL. The code, however (which originally
255 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
256 but it didn't always do it. This confused somebody who was copying the
257 code for some other use. I have removed all the tests.
258
411ef850
PH
259PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
260 feature that was used to support insecure browsers during the U.S. crypto
261 embargo. It requires special client support, and Exim is probably the
262 only MTA that supported it -- and would never use it because real RSA is
263 always available. This code has been removed, because it had the bad
264 effect of slowing Exim down by computing (never used) parameters for the
265 RSA_EXPORT functionality.
266
7befa435
PH
267PH/21 On the advice of Timo Sirainen, added a check to the dovecot
268 authenticator to fail if there's a tab character in the incoming data
269 (there should never be unless someone is messing about, as it's supposed
270 to be base64-encoded). Also added, on Timo's advice, the "secured" option
271 if the connection is using TLS or if the remote IP is the same as the
272 local IP, and the "valid-client-cert option" if a client certificate has
273 been verified.
274
48da4259 275PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
276 authenticators. This can be used for authorization after authentication
277 succeeds. (In the case of plaintext, it servers for both authentication
278 and authorization.)
279
48da4259
PH
280PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
281 if any retry times were supplied.
282
d1d5595c
PH
283PH/24 Exim crashed if verify=helo was activated during an incoming -bs
284 connection, where there is no client IP address to check. In this
285 situation, the verify now always succeeds.
286
0ef732d9
PH
287PH/25 Applied John Jetmore's -Mset patch.
288
328895cc
PH
289PH/26 Added -bem to be like -Mset, but loading a message from a file.
290
fd700877
PH
291PH/27 In a string expansion for a processed (not raw) header when multiple
292 headers of the same name were present, leading whitespace was being
293 removed from all of them, but trailing whitespace was being removed only
294 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
295 before concatenation. Completely empty headers in a concatenation (as
296 before) are ignored.
fd700877 297
8dce1a6f
PH
298PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
299 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
300
17af4a17
PH
301PH/29 [Removed. This was a change that I later backed out, and forgot to
302 correct the ChangeLog entry (that I had efficiently created) before
303 committing the later change.]
f6c332bd
PH
304
305PH/30 Exim was sometimes attempting to deliver messages that had suffered
306 address errors (4xx response to RCPT) over the same connection as other
307 messages routed to the same hosts. Such deliveries are always "forced",
308 so retry times are not inspected. This resulted in far too many retries
309 for the affected addresses. The effect occurred only when there were more
310 hosts than the hosts_max_try setting in the smtp transport when it had
311 the 4xx errors. Those hosts that it had tried were not added to the list
312 of hosts for which the message was waiting, so if all were tried, there
313 was no problem. Two fixes have been applied:
314
315 (i) If there are any address or message errors in an SMTP delivery, none
316 of the hosts (tried or untried) are now added to the list of hosts
317 for which the message is waiting, so the message should not be a
318 candidate for sending over the same connection that was used for a
319 successful delivery of some other message. This seems entirely
320 reasonable: after all the message is NOT "waiting for some host".
321 This is so "obvious" that I'm not sure why it wasn't done
322 previously. Hope I haven't missed anything, but it can't do any
323 harm, as the worst effect is to miss an optimization.
324
325 (ii) If, despite (i), such a delivery is accidentally attempted, the
326 routing retry time is respected, so at least it doesn't keep
327 hammering the server.
328
c1114884
PH
329PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
330 in ${readsocket because some servers need this prod.
331
7a0743eb
PH
332PH/32 Added some extra debug output when updating a wait-xxx database.
333
0d85fa3f
PH
334PH/33 The hint "could be header name not terminated by colon", which has been
335 given for certain expansion errors for a long time, was not being given
336 for the ${if def:h_colon_omitted{... case.
337
1bf43b78
PH
338PH/34 The spec says: "With one important exception, whenever a domain list is
339 being scanned, $domain contains the subject domain." There was at least
340 one case where this was not true.
341
520de300
PH
342PH/35 The error "getsockname() failed: connection reset by peer" was being
343 written to the panic log as well as the main log, but it isn't really
344 panic-worthy as it just means the connection died rather early on. I have
345 removed the panic log writing for the ECONNRESET error when getsockname()
346 fails.
347
48c7f9e2
PH
348PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
349 runs only) independently of the message's sender address. This meant
350 that, if the 4xx error was in fact related to the sender, a different
351 message to the same recipient with a different sender could confuse
352 things. In particualar, this can happen when sending to a greylisting
353 server, but other circumstances could also provoke similar problems.
354 I have changed the default so that the retry time for these errors is now
355 based a combination of the sender and recipient addresses. This change
356 can be overridden by setting address_retry_include_sender=false in the
357 smtp transport.
358
99ea1c86
PH
359PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
360 remote server are returned as part of bounce messages. This was not
361 happening for LMTP over a pipe (the lmtp transport), but now it is the
362 same for both kinds of LMTP.
363
a2042e78
PH
364PH/38 Despite being documented as not happening, Exim was rewriting addresses
365 in header lines that were in fact CNAMEs. This is no longer the case.
366
4fbcfc2e
PH
367PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
368 and queue runs started by the daemon processed all messages. This has
369 been fixed so that -R and -S can now usefully be given with -q<time>.
370
aa41d2de
PH
371PH/40 Import PCRE release 6.7 (fixes some bugs).
372
af561417
PH
373PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
374
3cc66b45
PH
375PH/42 Give an error if -q is specified more than once.
376
194cc0e4
PH
377PH/43 Renamed the variables $interface_address and $interface_port as
378 $received_ip_address and $received_port, to make it clear that these
379 values apply to message reception, and not to the outgoing interface when
380 a message is delivered. (The old names remain recognized, of course.)
381
a401ddaa
PH
382PH/44 There was no timeout on the connect() call when using a Unix domain
383 socket in the ${readsocket expansion. There now is.
384
4e88a19f
PH
385PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
386 be meaningful with "accept".
387
d7d7b289
SC
388SC/01 Eximstats V1.43
389 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
390
391SC/02 Eximstats V1.44
392 Use a glob alias rather than an array ref in the generated
393 parser. This improves both readability and performance.
394
395SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
396 Collect SpamAssassin and rejection statistics.
397 Don't display local sender or destination tables unless
398 there is data to show.
399 Added average volumes into the top table text output.
400
401SC/04 Eximstats V1.46
402 Collect data on the number of addresses (recipients)
403 as well as the number of messages.
404
405SC/05 Eximstats V1.47
406 Added 'Message too big' to the list of mail rejection
407 reasons (thanks to Marco Gaiarin).
408
409SC/06 Eximstats V1.48
410 Mainlog lines which have GMT offsets and are too short to
411 have a flag are now skipped.
412
413SC/07 Eximstats V1.49 (Alain Williams)
414 Added the -emptyok flag.
415
416SC/08 Eximstats V1.50
417 Fixes for obtaining the IP address from reject messages.
418
0ea2a468
JJ
419JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
420 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
421 whitesspace changes from 4.64-PH/27
422
423JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
424 match 4.64-PH/13
425
426JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
427 are found, allow negative numbers in numeric criteria)
428
429JJ/06 exipick.20061117.2, added new $message_body_missing variable
430
431JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
432 to match changes made in 4.64-PH/43
433
8a10f5a4
PH
434PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
435
30e18802
PH
436PH/47 Put in an explicit test for a DNS lookup of an address record where the
437 "domain" is actually an IP address, and force a failure. This locks out
438 those revolvers/nameservers that support "A-for-A" lookups, in
439 contravention of the specifications.
440
55728a4f
PH
441PH/48 When a host name was looked up from an IP address, and the subsequent
442 forward lookup of the name timed out, the host name was left in
443 $sender_host_name, contrary to the specification.
d7d7b289 444
d7837193
PH
445PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
446 restricted to single-key lookups, Exim was not diagnosing an error if
447 * or *@ was used with a query-style lookup.
448
87054a31
PH
449PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
450
ea2c01d2
MH
451MH/01 local_scan ABI version incremented to 1.1. It should have been updated
452 long ago, but noone interested enough thought of it. Let's just say that
453 the "1.1" means that there are some new functions that weren't there at
454 some point in the past.
455
e4fa6968
PH
456PH/51 Error processing for expansion failure of helo_data from an smtp
457 transport during callout processing was broken.
458
56f5d9bd
PH
459PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
460 tested/used via the -bh/-bhc/-bs options.
461
922e1c28
PH
462PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
463 bug, fixed in subsequent PCRE releases).
464
21eb6e72
PH
465PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
466 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
467
a0540757
PH
468PH/55 Check for a ridiculously long file name in exim_dbmbuild.
469
944e9e9c 470
478be7b0
SC
471Exim version 4.63
472-----------------
473
474SC/01 Use a glob alias rather than an array ref in eximstats generated
475 parser. This improves both readability and performance.
476
477SC/02 Collect SpamAssassin and rejection statistics in eximstats.
478 Don't display local sender or destination tables in eximstats unless
479 there is data to show.
480 Added average volumes into the eximstats top table text output.
481
482SC/03 Collect data on the number of addresses (recipients) as well
483 as the number of messages in eximstats.
484
2b965a65
TF
485TF/01 Correct an error in the documentation for the redirect router. Exim
486 does (usually) call initgroups() when daemonizing.
478be7b0 487
45b91596
PH
488TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
489 with consistent privilege compared to when running as a daemon.
478be7b0 490
c59f5781
TF
491TF/03 Note in the spec that $authenticated_id is not set for local
492 submissions from trusted users.
493
90fc3069
TF
494TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
495 Thanks to Dean Brooks <dean@iglou.com> for the patch.
496
6083aca0
TF
497TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
498 by adding some example configuration directives to the default
499 configuration file. A little bit of work is required to uncomment the
500 directives and define how usernames and passwords are checked, but
501 there is now a framework to start from.
502
765b530f
PH
503PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
504 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
505 without this. I don't know how relevant this is to other LDAP libraries.
506
4e167a8c
PH
507PH/02 Add the verb name to the "unknown ACL verb" error.
508
4608d683
PH
509PH/03 Magnus Holmgren's patch for filter_prepend_home.
510
b8dc3e4a
PH
511PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
512
5418e93b
PH
513PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
514 directory not expanded when it should be if an expanded home directory
515 was set for the address (which is overridden by the transport).
516
b4a9bda2
PH
517PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
518 libradius.
519
45b91596
PH
520PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
521 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
522 because it is too late at that time, and has no effect.
523
5547e2c5
PH
524PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
525 security issue with \' (bugzilla #107). I could not use the
526 PQescapeStringConn() function, because it needs a PGconn value as one of
527 its arguments.
528
dbcef0ea
PH
529PH/08 When testing addresses using -bt, indicate those final addresses that
530 are duplicates that would not cause an additional delivery. At least one
531 person was confused, thinking that -bt output corresponded to deliveries.
532 (Suppressing duplicates isn't a good idea as you lose the information
533 about possibly different redirections that led to the duplicates.)
534
25257489
PH
535PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
536 systems where poll() doesn't work, in particular OS X.
537
c816d124
PH
538PH/10 Added more information to debugging output for retry time not reached.
539
a9ccd69a
PH
540PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
541 operations in malware.c.
542
75fa1910
PH
543PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
544 signatures.
545
a7d7aa58
PH
546PH/13 If write_rejectlog was set false when logging was sent to syslog with
547 syslog_duplication set false, log lines that would normally be written
548 both the the main log and to the reject log were not written to syslog at
549 all.
550
42119b09
PH
551PH/14 In the default configuration, change the use of "message" in ACL warn
552 statements to "add_header".
553
41609df5
PH
554PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
555 not followed by a command (e.g. "seen endif").
556
a5bd321b
PH
557PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
558 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
559 latter.
560
e85a7ad5 561PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
562 so that it is now:
563
e85a7ad5
PH
564 ${if or { \
565 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
566 { match{$h_precedence:}{(?i)bulk|list|junk} } \
567 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
568 }{no}{yes}}
569
e85a7ad5
PH
570 The Auto-Submitted: and various List- headers are standardised, whereas I
571 don't think Precedence: ever was.
5dff5817 572
d8fe1c03
PH
573PH/18 Refactored debugging code in route_finduser() to show more information,
574 in particular, the error code if getpwnam() issues one.
575
16282d2b
PH
576PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
577 This is apparently needed in addition to the PH/07 change above to avoid
578 any possible encoding problems.
579
35d40a98
PH
580PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
581 but not after initializing Perl.
582
034d99ab
PH
583PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
584 output them only if debugging. By default they are written stderr,
585 apparently, which is not desirable.
586
6ec97b1b
PH
587PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
588 queries.
589
e22ca4ac
JJ
590JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
591 --not options
592
593JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
594
33d73e3b
PH
595PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
596 authenticated or an ident call has been made. Suppress the default
597 values for $authenticated_id and $authenticated_sender (but permit -oMai
598 and -oMas) when testing with -bh.
599
9ecb03f3
PH
600PH/24 Re-jigged the order of the tests in the default configuration so that the
601 tests for valid domains and recipients precede the DNS black list and CSA
602 tests, on the grounds that those ones are more expensive.
603
084efe8d
PH
604PH/25 Exim was not testing for a space following SMTP commands such as EHLO
605 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
606 This bug exists in every version of Exim that I still have, right back to
607 0.12.
608
366fc9f0
PH
609PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
610 However, an attempt to turn on case-sensitivity in a regex key by
611 including (?-i) didn't work because the subject string was already
612 lowercased, and the effects were non-intuitive. It turns out that a
613 one-line patch can be used to allow (?-i) to work as expected.
614
c59f5781 615
c887c79e
TF
616Exim version 4.62
617-----------------
618
619TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
620 other effects) broke the use of negated acl sub-conditions.
621
1cce3af8
PH
622PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
623 patch).
624
afb3eaaf
PH
625PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
626 "Deny" causes Exim to reject the incoming connection with a 554 error.
627 Unfortunately, if there is a major crisis, such as a disk failure,
628 tcp-wrappers gives "deny", whereas what one would like would be some
629 kind of temporary error. A kludge has been added to help with this.
630 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
631 554 error is used if errno is still zero or contains ENOENT (which occurs
632 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
633 451 error is used.
634
e173618b
PH
635PH/03 Add -lutil to the default FreeBSD LIBS setting.
636
dd16e114
PH
637PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
638 errors. Otherwise a message that provokes a temporary error (when other
639 messages do not) can cause a whole host to time out.
640
f7fd3850
PH
641PH/05 Batch deliveries by appendfile and pipe transports did not work when the
642 addresses were routed directly to files or pipes from a redirect router.
643 File deliveries just didn't batch; pipe deliveries might have suffered
644 odd errors.
645
d87df92c
PH
646PH/06 A failure to get a lock for a hints database would erroneously always say
647 "Failed to get write lock", even when it was really a read lock.
648
7e9f683d
PH
649PH/07 The appendfile transport was creating MBX lock files with a fixed mode
650 of 0600. This has been changed to use the value of the lockfile_mode
651 option (which defaults to 0600).
652
bfad5236
PH
653PH/08 Applied small patch from the Sieve maintainer.
654
01c490df
PH
655PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
656 folder from quota calculations, a direct delivery into this folder messed
657 up the contents of the maildirsize file. This was because the regex was
658 used only to exclude .Trash (or whatever) when the size of the mailbox
659 was calculated. There was no check that a delivery was happening into an
660 excluded directory. This bug has been fixed by ignoring all quota
661 processing for deliveries into excluded directories.
662
d6629cdc
PH
663PH/10 Added the maildirfolder_create_regex option to appendfile.
664
1cce3af8 665
214e2000
PH
666Exim version 4.61
667-----------------
668
669PH/01 The code for finding all the local interface addresses on a FreeBSD
670 system running IPv6 was broken. This may well have applied to all BSD
671 systems, as well as to others that have similar system calls. The broken
672 code found IPv4 interfaces correctly, but gave incorrect values for the
673 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
674 that it would not match correctly against @[] and not recognize the IPv6
675 addresses as local.
676
f9daeae0
PH
677PH/02 The ipliteral router was not recognizing addresses of the form user@
678 [ipv6:....] because it didn't know about the "ipv6:" prefix.
679
7e66e54d
PH
680PH/03 Added disable_ipv6.
681
c8ea1597
PH
682PH/04 Changed $reply_address to use the raw form of the headers instead of the
683 decoded form, because it is most often used to construct To: headers
684 lines in autoreplies, and the decoded form may well be syntactically
685 invalid. However, $reply_address has leading white space removed, and all
686 newlines turned into spaces so that the autoreply transport does not
687 grumble.
688
911f6fde
PH
689PH/05 If group was specified without a user on a router, and no group or user
690 was specified on a transport, the group from the router was ignored.
691
47ca6d6c
PH
692PH/06 Increased the number of ACL variables to 20 of each type, and arranged
693 for visible compile-time settings that can be used to change these
694 numbers, for those that want even more. Backwards compatibility with old
695 spool files has been maintained. However, going back to a previous Exim
696 release will lost any variables that are in spool files.
697
ed0e9820
PH
698PH/07 Two small changes when running in the test harness: increase delay when
699 passing a TCP/IP connection to a new process, in case the original
700 process has to generate a bounce, and remove special handling of
701 127.0.0.2 (sic), which is no longer necessary.
702
eff37e47
PH
703PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
704 be the same on different OS.
705
1921d2ea
PH
706PH/09 Moved a debug statement in filter processing to avoid a race problem when
707 testing.
708
b3f69ca8
JJ
709JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
710 whether --show-vars was specified or not
711
712JJ/02 exipick: Added support for new ACL variable spool format introduced
713 in 4.61-PH/06
714
424a1c63
PH
715PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
716 syntactically invalid From: or Reply-to: line, and a filter used this to
717 generate an autoreply, and therefore failed to obtain an address for the
718 autoreply, Exim could try to deliver to a non-existent relative file
719 name, causing unrelated and misleading errors. What now happens is that
720 it logs this as a hard delivery error, but does not attempt to create a
721 bounce message.
722
7a100415
PH
723PH/11 The exinext utility has a -C option for testing purposes, but although
724 the given file was scanned by exinext itself; it wasn't being passed on
725 when Exim was called.
726
19b9dc85
PH
727PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
728 an end-of-file indication when reading a command response.
729
309bd837
PH
730PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
731 compiled. In many other places in Exim, IPv6 addresses are always
732 recognized, so I have changed this. It also means that IPv4 domain
733 literals of the form [IPV4:n.n.n.n] are now always recognized.
734
59e82a2a
PH
735PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
736 used if the router is not running as root, for example, when verifying at
737 ACL time, or when using -bh. The debugging output from this situation was
738 non-existent - all you got was a failure to exec. I have made two
739 changes:
740
741 (a) Failures to set uid/gid, the current directory, or a process leader
742 in a subprocess such as that created by queryprogram now generate
743 suitable debugging ouput when -d is set.
744
745 (b) The queryprogram router detects when it is not running as root,
746 outputs suitable debugging information if -d is set, and then runs
747 the subprocess without attempting to change uid/gid.
748
9edc04ce
PH
749PH/15 Minor change to Makefile for building test_host (undocumented testing
750 feature).
751
1349e1e5
PH
752PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
753 additional section of a DNS packet that returns MX or SRV records.
754 Instead, it always explicitly searches for A/AAAA records. This avoids
755 major problems that occur when a DNS server includes only records of one
756 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
757 fixed another bug: if SRV records were looked up and the corresponding
758 address records were *not* found in the additional section, the port
759 values from the SRV records were lost.
760
ea49d0e1
PH
761PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
762 using the correct key (the original address) when searching the retry
763 rules in order to find which one to use for generating the retry hint.
764
064a94c9
PH
765PH/18 If quota_warn_message contains a From: header, Exim now refrains from
766 adding the default one. Similarly, if it contains a Reply-To: header, the
767 errors_reply_to option, if set, is not used.
768
727071f8
PH
769PH/19 When calculating a retry time, Exim used to measure the "time since
770 failure" by looking at the "first failed" field in the retry record. Now
771 it does not use this if it is later than than the arrival time of the
772 message. Instead it uses the arrival time. This makes for better
773 behaviour in cases where some deliveries succeed, thus re-setting the
774 "first failed" field. An example is a quota failure for a huge message
775 when small messages continue to be delivered. Without this change, the
776 "time since failure" will always be short, possible causing more frequent
777 delivery attempts for the huge message than are intended.
dd16e114 778 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 779
f78eb7c6
PH
780PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
781 $1, $2, $3) because the numerical variables can be reset during some
782 expansion items (e.g. "match"), thereby losing the authentication data.
783
21c28500
PH
784PH/21 Make -bV show the size of off_t variables so that the test suite can
785 decide whether to run tests for quotas > 2G.
786
787PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
788 mailbox_size, and mailbox_filecount in the appendfile transport. If a
789 filecount value is greater than 2G or if a quota value is greater than 2G
790 on a system where the size of off_t is not greater than 4, a panic error
791 is given.
792
1688f43b
PH
793PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
794 never match. The debug and -bh output now contains an explicit error
795 message indicating a malformed IPv4 address or mask.
796
797PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
798 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
799 PH/23 above applies.
800
9675b384
PH
801PH/25 Do not write to syslog when running in the test harness. The only
802 occasion when this arises is a failure to open the main or panic logs
803 (for which there is an explicit test).
804
6a3f1455
PH
805PH/26 Added the /no_tell option to "control=freeze".
806
dac79d3e
PH
807PH/27 If a host name lookup failed very early in a connection, for example, if
808 the IP address matched host_lookup and the reverse lookup yielded a name
809 that did not have a forward lookup, an error message of the form "no IP
810 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
811 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 812
5977a0b3
PH
813PH/28 An enabling patch from MH: add new function child_open_exim2() which
814 allows the sender and the authenticated sender to be set when
815 submitting a message from within Exim. Since child_open_exim() is
816 documented for local_scan(), the new function should be too.
817
c91535f3
PH
818PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
819 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
820 results in an empty string is now treated as unset.
821
0d46a8c8
PH
822PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
823
278c6e6c
PH
824PH/31 Added sender_verify_fail logging option.
825
2cbb4081
PH
826PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
827 needed by RFC 822 but not by RFC 2822 was commented out. I have now
828 tidied the source and removed it altogether.
829
3eef829e
PH
830PH/33 When a queue run was abandoned because the load average was too high, a
831 log line was always written; now it is written only if the queue_run log
832 selector is set. In addition, the log line for abandonment now contains
833 information about the queue run such as the pid. This is always present
834 in "start" and "stop" lines but was omitted from the "abandon" line.
835
1ab95fa6
PH
836PH/34 Omit spaces between a header name and the colon in the error message that
837 is given when verify = headers_syntax fails (if there are lots of them,
838 the message gets confusing).
839
230205fc
PH
840PH/35 Change the default for dns_check_names_pattern to allow slashes within
841 names, as there are now some PTR records that contain slashes. This check
842 is only to protect against broken name servers that fall over on strange
843 characters, so the fact that it applies to all lookups doesn't matter.
844
75e0e026
PH
845PH/36 Now that the new test suite is complete, we can remove some of the
846 special code in Exim that was needed for the old test suite. For example,
847 sorting DNS records because real resolvers return them in an arbitrary
848 order. The new test suite's fake resolver always returns records in the
849 same order.
850
851PH/37 When running in the test harness, use -odi for submitted messages (e.g.
852 bounces) except when queue_only is set, to avoid logging races between
853 the different processes.
854
145396a6
PH
855PH/38 Panic-die if .include specifies a non-absolute path.
856
3cd34f13
PH
857PH/39 A tweak to the "H" retry rule from its user.
858
11121d3d
JJ
859JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
860 a label. They prevented compilation on older perls.
861
862JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
863 a warning to be raised on newish perls.
864
865JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
866 on queue. Changes to match documented behaviour of showing count of
867 messages matching specified criteria.
868
8def5aaf
PH
869PH/40 Changed the default ident timeout from 30s to 5s.
870
929ba01c
PH
871PH/41 Added support for the use of login_cap features, on those BSD systems
872 that have them, for controlling the resources used by pipe deliveries.
873
2632889e
PH
874PH/42 The content-scanning code uses fopen() to create files in which to put
875 message data. Previously it was not paying any attention to the mode of
876 the files. Exim runs with umask(0) because the rest of the code creates
877 files with open(), and sets the required mode explicitly. Thus, these
878 files were ending up world-writeable. This was not a big issue, because,
879 being within the spool directory, they were not world-accessible. I have
880 created a function called modefopen, which takes an additional mode
881 argument. It sets umask(777), creates the file, chmods it to the required
882 mode, then resets the umask. All the relevant calls to fopen() in the
883 content scanning code have been changed to use this function.
884
944a9c55
PH
885PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
886 to 24 hours. This avoids potential overflow problems when processing G
887 and H retry rules. I suspect nobody ever tinkers with this value.
888
4a23603b
PH
889PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
890
4730f942
PH
891PH/45 When the plaintext authenticator is running as a client, the server's
892 challenges are checked to ensure they are valid base64 strings. By
893 default, the authentication attempt is cancelled if an invalid string is
894 received. Setting client_ignore_invalid_base64 true ignores these errors.
895 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
896 they are received. Thus, the responses can be made to depend on the
897 challenges. If an invalid string is ignored, an empty string is placed in
898 the variable.
899
30dba1e6
PH
900PH/46 Messages that are created by the autoreply transport now contains a
901 References: header, in accordance with RFCs 2822 and 3834.
902
382afc6b
PH
903PH/47 Added authenticated_sender_force to the smtp transport.
904
a86229cf
PH
905PH/48 The ${prvs expansion was broken on systems where time_t was long long.
906
50c99ba6
PH
907PH/49 Installed latest patch from the Sieve maintainer.
908
d35e429d
PH
909PH/50 When an Exim quota was set without a file count quota, and mailbox_size
910 was also set, the appendfile transport was unnecessarily scanning a
911 directory of message files (e.g. for maildir delivery) to find the count
912 of files (along with the size), even though it did not need this
913 information. It now does the scan only if it needs to find either the
914 size of the count of files.
915
f90d018c
PH
916PH/51 Added ${time_eval: to convert Exim time strings into seconds.
917
75def545
PH
918PH/52 Two bugs concerned with error handling when the smtp transport is
919 used in LMTP mode:
920
921 (i) Exim was not creating retry information for temporary errors given
922 for individual recipients after the DATA command when the smtp transport
923 was used in LMTP mode. This meant that they could be retried too
924 frequently, and not timed out correctly.
925
926 (ii) Exim was setting the flag that allows error details to be returned
927 for LMTP errors on RCPT commands, but not for LMTP errors for individual
928 recipients that were returned after the DATA command.
929
930PH/53 This is related to PH/52, but is more general: for any failing address,
931 when detailed error information was permitted to be returned to the
932 sender, but the error was temporary, then after the final timeout, only
933 "retry timeout exceeded" was returned. Now it returns the full error as
934 well as "retry timeout exceeded".
935
c46782ef
PH
936PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
937 do this, and (what is worse) MTAs that accept it.
938
71fafd95
PH
939PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
940 will now be deprecated.
941
2c5db4fd
PH
942PH/56 New os.c-cygwin from the Cygwin maintainer.
943
9cf6b11a
JJ
944JJ/06 exipick: added --unsorted option to allow unsorted output in all output
945 formats (previously only available in exim formats via -bpr, -bpru,
946 and -bpra. Now also available in native and exiqgrep formats)
947
948JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
949 with very large, slow to parse queues
950
951JJ/08 exipick: added ! as generic prefix to negate any criteria format
952
953JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
954
898d150f
PH
955PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
956 responses to authentication challenges, though it was showing the
957 challenges; (ii) I've removed the CR characters from the debug output for
958 SMTP output lines.
959
46218253
PH
960PH/58 Allow for the insertion of a newline as well as a space when a string
961 is turned into more than one encoded-word during RFC 2047 encoding. The
962 Sieve code now uses this.
963
e97957bc
PH
964PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
965 data_4xx, lost_connection, tls_required.
966
81e509d7
PH
967PH/60 When a VRFY deferred or FAILED, the log message rather than the user
968 message was being sent as an SMTP response.
969
3d240ff7
PH
970PH/61 Add -l and -k options to exicyclog.
971
b37c4101
PH
972PH/62 When verifying, if an address was redirected to one new address, so that
973 verification continued, and the new address failed or deferred after
974 having set something in $address_data, the value of $address_data was not
975 passed back to the ACL. This was different to the case when no
976 redirection occurred. The value is now passed back in both cases.
977
79378e0f
PH
978PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
979 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
980 use login_cap.h, so on its own it isn't the distinguishing feature. The
981 new name refers directly to the setclassresources() function.
982
e49c7bb4
PH
983PH/65 Added configuration files for NetBSD3.
984
d114ec46
PH
985PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
986
f3d7df6c
PH
987PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
988 is preferred over IPv4.
989
715ab376
PH
990PH/68 The bounce_return_message and bounce_return_body options were not being
991 honoured for bounces generated during the reception of non-SMTP messages.
992 In particular, this applied to messages rejected by the ACL. This bug has
993 been fixed. However, if bounce_return_message is true and bounce_return_
994 body is false, the headers that are returned for a non-SMTP message
995 include only those that have been read before the error was detected.
996 (In the case of an ACL rejection, they have all been read.)
997
6b31b150
PH
998PH/69 The HTML version of the specification is now built in a directory called
999 spec_html instead of spec.html, because the latter looks like a path with
1000 a MIME-type, and this confuses some software.
1001
1002PH/70 Catch two compiler warnings in sieve.c.
1003
d515a917
PH
1004PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1005 function verify_get_ident() calls ip_connect() to connect a socket, but
1006 if the "connect()" function timed out, ip_connect() used to close the
1007 socket. However, verify_get_ident() also closes the socket later, and in
1008 between Exim writes to the log, which may get opened at this point. When
1009 the socket was closed in ip_connect(), the log could get the same file
1010 descriptor number as the socket. This naturally causes chaos. The fix is
1011 not to close the socket in ip_connect(); the socket should be closed by
1012 the function that creates it. There was only one place in the code where
1013 this was missing, in the iplookup router, which I don't think anybody now
1014 uses, but I've fixed it anyway.
1015
9b8fadde
PH
1016PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1017 well as to direct DNS lookups. Otherwise the handling of names in host
1018 lists is inconsistent and therefore confusing.
1019
214e2000 1020
5de37277
PH
1021Exim version 4.60
1022-----------------
1023
cc38ddbf
PH
1024PH/01 Two changes to the default runtime configuration:
1025
1026 (1) Move the checks for relay_from_hosts and authenticated clients from
1027 after to before the (commented out) DNS black list checks.
1028
1029 (2) Add control=submission to the relay_from_hosts and authenticated
1030 clients checks, on the grounds that messages accepted by these
1031 statements are most likely to be submissions.
5de37277 1032
72fdd6ae
PH
1033PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1034
1035 (1) Generate an error if the third argument for the ${prvs expansion is
1036 not a single digit.
1037
1038 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1039 string.
1040
1041 (3) Reset the variables that are obtained from the first argument of
1042 ${prvscheck and used in the second argument before leaving the code,
1043 because their memory is reclaimed, so using them afterwards may do
1044 silly things.
1045
1046 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1047 one (it's much easier than Tom thought :-).
1048
1049 (5) Because of (4), we can now allow for the use of $prvscheck_result
1050 inside the third argument.
cb9328de 1051
cb741023
PH
1052PH/03 For some reason, the default setting of PATH when running a command from
1053 a pipe transport was just "/usr/bin". I have changed it to
1054 "/bin:/usr/bin".
1055
f174f16e
PH
1056PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1057 anything to be listed in the output from -bV.
b2f5a032 1058
c25242d7
PH
1059PH/05 When a filter generated an autoreply, the entire To: header line was
1060 quoted in the delivery log line, like this:
1061
1062 => >A.N.Other <ano@some.domain> <original@ddress> ...
1063
1064 This has been changed so that it extracts the operative address. There
1065 may be more than one such address. If so, they are comma-separated, like
1066 this:
1067
1068 => >ano@some.domain,ona@other.domain <original@ddress> ...
1069
82c19f95
PH
1070PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1071 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1072 not being looked up in the rDNS to get a host name, Exim was showing the
1073 IP address twice in Received: lines, even though the IP addresses were
1074 identical. For example:
1075
1076 Received: from [1.2.3.4] (helo=[1.2.3.4])
1077
1078 However, if the real host name was known, it was omitting the HELO data
1079 if it matched the actual IP address. This has been tidied up so that it
1080 doesn't show the same IP address twice.
1081
d7ffbc12
PH
1082PH/07 When both +timestamp and +memory debugging was on, the value given by
1083 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1084 called by the debug printing, thereby overwriting the timestamp buffer.
1085 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1086
9f526266
PH
1087PH/08 When the original message was included in an autoreply transport, it
1088 always said "this is a copy of the message, including all the headers",
1089 even if body_only or headers_only was set. It now gives an appropriate
1090 message.
1091
87fcc8b9
PH
1092PH/09 Applied a patch from the Sieve maintainer which:
1093
1094 o fixes some comments
1095 o adds the (disabled) notify extension core
1096 o adds some debug output for the result of if/elsif tests
1097 o points to the current vacation draft in the documentation
1098 and documents the missing references header update
1099
1100 and most important:
1101
1102 o fixes a bug in processing the envelope test (when testing
1103 multiple envelope elements, the last element determinted the
1104 result)
1105
456682f5
PH
1106PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1107 Electronic Mail") by including:
1108
1109 Auto-submitted: auto-generated
1110
1111 in the messages that it generates (bounce messages and others, such as
1112 warnings). In the case of bounce messages for non-SMTP mesages, there was
1113 also a typo: it was using "Auto_submitted" (underscore instead of
1114 hyphen). Since every message generated by Exim is necessarily in response
1115 to another message, thes have all been changed to:
1116
1117 Auto-Submitted: auto-replied
1118
1119 in accordance with these statements in the RFC:
1120
1121 The auto-replied keyword:
1122
1123 - SHOULD be used on messages sent in direct response to another
1124 message by an automatic process,
1125
1126 - MUST NOT be used on manually-generated messages,
1127
1128 - MAY be used on Delivery Status Notifications (DSNs) and Message
1129 Disposition Notifications (MDNs),
1130
1131 - MUST NOT be used on messages generated by automatic or periodic
1132 processes, except for messages which are automatic responses to
1133 other messages.
1134
3e46c1aa
PH
1135PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1136 to the default Received: header definition.
456682f5 1137
49826d12
PH
1138PH/12 Added log selector acl_warn_skipped (default on).
1139
eba0c039
PH
1140PH/13 After a successful wildlsearch lookup, discard the values of numeric
1141 variables because (a) they are in the wrong storage pool and (b) even if
1142 they were copied, it wouldn't work properly because of the caching.
1143
a0d6ba8a
PH
1144PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1145 checking when decoding. Apparently there are clients that generate
1146 overlong encoded strings. Why am I not surprised?
1147
f0917727
PH
1148PH/15 If the first argument of "${if match_address" was not empty, but did not
1149 contain an "@" character, Exim crashed. Now it writes a panic log message
1150 and treats the condition as false.
1151
096fee00
PH
1152PH/16 In autoreply, treat an empty string for "once" the same as unset.
1153
024bd3c2
PH
1154PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1155 extension "envelope-auth". The code is finished and in agreement with
1156 other implementations, but there is no documentation so far and in fact,
1157 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1158 not changing the active code.
1159
1160 Print executed "if" and "elsif" statements when debugging is used. This
1161 helps a great deal to understand what a filter does.
1162
1163 Document more things not specified clearly in RFC3028. I had all this
1164 sorted out, when out of a sudden new issues came to my mind. Oops."
1165
df199fec
PH
1166PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1167 (Bugzilla #53).
1168
d27f1df3
PH
1169PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1170 canonical form (as documented). However, after a host name lookup from
1171 the IP address, check_host() was doing a simple string comparison with
1172 addresses acquired from the DNS when checking that the found name did
1173 have the original IP as one of its addresses. Since any found IPv6
1174 addresses are likely to be in abbreviated form, the comparison could
1175 fail. Luckily, there already exists a function for doing the comparison
1176 by converting both addresses to binary, so now that is used instead of
1177 the text comparison.
1178
96776534
PH
1179PH/20 There was another similar case to PH/19, when a complete host name was
1180 given in a host list; looking up its IP address could give an abbreviated
1181 form, whereas the current host's name might or might not be abbreviated.
1182 The same fix has been applied.
1183
5de37277 1184
9a799bc0
PH
1185Exim version 4.54
1186-----------------
1187
1188PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1189 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1190 It now does.
1191
99a4b039
PH
1192PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1193 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1194
1195PH/03 Typo: missing ".o" in src/pcre/Makefile.
1196
4b233853
PH
1197PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1198 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1199 Also, for "Auto-Submitted", treat anything other than "no" as
1200 non-personal, in accordance with RFC 3834. (Previously it treated
1201 anything starting "auto-" as non-personal.)
1202
8857ccfd
PH
1203TF/01 The control=submission/name=... option had a problem with syntax
1204 errors if the name included a slash character. The /name= option
1205 now slurps the rest of the string, so it can include any characters
1206 but it must come last in the list of options (after /sender_retain
1207 or /domain=).
1208
433a2980
PH
1209PH/05 Some modifications to the interface to the fake nameserver for the new
1210 testing suite.
1211
3e46c1aa 1212
9a799bc0 1213
e3a311ba
TK
1214Exim version 4.53
1215-----------------
1216
1217TK/01 Added the "success_on_redirect" address verification option. See
1218 NewStuff for rationale and an example.
1219
13b685f9
PH
1220PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1221
395ff96d
PH
1222PH/02 Patch to exigrep to allow it to work on syslog lines.
1223
5b68f6e4
PH
1224PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1225 fread() to skip over the body file's header line, because in Cygwin the
1226 header line is locked and is inaccessible.
1227
1ab52c69
PH
1228PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1229 co-exist for some time) to make it clear that it is the Exim ID that is
1230 referenced, not the Message-ID: header line.
1231
b07e6aa3
PH
1232PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1233 string_format() function, because snprintf() does not exist on all
1234 operating systems.
1235
254e032f
PH
1236PH/06 The use of forbid_filter_existstest now also locks out the use of the
1237 ${stat: expansion item.
1238
3af76a81
PH
1239PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1240 protocol synchronization error", to keep the pedants happy.
1241
2548ba04
PH
1242PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1243 well as for IRIX systems, when gcc is being used. See the host.c source
1244 file for comments.
1245
b6c6011d
PH
1246PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1247
cf39cf57
PH
1248PH/10 Named domain lists were not working if used in a queue_smtp_domains
1249 setting.
1250
f1513293
PH
1251PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1252 transport and to the smtp transport in LMTP mode.
1253
727549a4
PH
1254TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1255
af46795e
PH
1256PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1257 run a filter in a subprocess. This could lead to confusion in subsequent
1258 lookups in the parent process. There should also be a search_tidyup() at
1259 the end of the subprocess.
1260
d7b47fd0
PH
1261PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1262 only if the host matched helo_try_verify_hosts, which caused the
1263 verification to occur when the EHLO/HELO command was issued. The ACL just
1264 tested the remembered result. Now, if a previous verification attempt has
1265 not happened, "verify = helo" does it there and then.
1266
ee744174
JJ
1267JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1268
b582ab87
PH
1269TK/03 Fix log output including CR from clamd.
1270
41a13e0a
PH
1271PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1272 exist provoked a memory error which could cause a segfault.
1273
f625cc5a
PH
1274PH/15 Installed PCRE 6.2
1275
1276PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1277
21f7af35
PH
1278PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1279 of the problem. Specifically, suggested +O2 rather than +O1 for the
1280 HP-UX compiler.
1281
31480e42
PH
1282PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1283
2d280592
PH
1284PH/20 If a delivery was routed to a non-standard port by means of an SRV
1285 record, the port was not correctly logged when the outgoing_port log
1286 selector was set (it logged the transort's default port).
1287
7cd1141b
PH
1288PH/21 Added support for host-specific ports to manualroute, queryprogram,
1289 fallback_hosts, and "hosts" in the smtp transport.
1290
1291PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1292 host errors such as "Connection refused".
1293
750af86e
PH
1294PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1295 authentication with radiusclient 0.4.9:
1296
1297 - Error returned from rc_read_config was caught wrongly
1298 - Username/password not passed on to radius server due to wrong length.
1299
1300 The presumption is that some radiusclient API changes for 4.51/PH/17
1301 were not taken care of correctly. The code is still untested by me (my
1302 Linux distribution still has 0.3.2 of radiusclient), but it was
1303 contributed by a Radius user.
1304
1305PH/24 When doing a callout, the value of $domain wasn't set correctly when
1306 expanding the "port" option of the smtp transport.
1307
4304270b
TK
1308TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1309 while reading a MIME header. Thanks to Tom Hughes for a patch.
1310
750af86e
PH
1311PH/24 Include config.h inside local_scan.h so that configuration settings are
1312 available.
1313
64ffc24f
PH
1314PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1315 that in an ACL for RCPT (for example), you can examine exactly what was
1316 received.
1317
5dd9625b
PH
1318PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1319 commands, but it was not correctly comparing the address with the actual
1320 client host address. Thus, it would show the EHLO address in Received:
1321 header lines when this was not necessary.
1322
5591031b
PH
1323PH/27 Added the % operator to ${eval:}.
1324
ba18e66a
PH
1325PH/28 Exim tries to create and chdir to its spool directory when it starts;
1326 it should be ignoring failures (because with -C, for example, it has lost
1327 privilege). It wasn't ignoring creation failures other than "already
1328 exists".
1329
9cec981f
PH
1330PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1331 -bV or -d is used.
1332
aa2b5c79
PH
1333PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1334 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1335 too many continuations, the temporary file was not being removed, and the
1336 return code was incorrect.
aa2b5c79 1337
48a53b7f
PH
1338PH/31 Missing "BOOL" in function definition in filtertest.c.
1339
1c59d63b
PH
1340PH/32 Applied Sieve patches from the maintainer.
1341
671012da
TK
1342TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1343
1509d3a8
PH
1344PH/33 Added "verify = not_blind".
1345
1346PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1347 Local/Makefile (with some defaults set). These are used in built scripts
1348 such as exicyclog, but they have never been used in the exim_install
1349 script (though there are many overriding facilities there). I have
1350 arranged that the exim_install script now takes note of these two
1351 settings.
1352
1353PH/35 Installed configuration files for Dragonfly.
1354
2fe1a124
PH
1355PH/36 When a locally submitted message by a trusted user did not contain a
1356 From: header, and the sender address was obtained from -f or from an SMTP
1357 MAIL command, and the trusted user did not use -F to supply a sender
1358 name, $originator_name was incorrectly used when constructing a From:
1359 header. Furthermore, $originator_name was used for submission mode
1360 messages from external hosts without From: headers in a similar way,
1361 which is clearly wrong.
1362
8800895a
PH
1363PH/37 Added control=suppress_local_fixups.
1364
ccfdb010
PH
1365PH/38 When log_selector = +received_sender was set, and the addition of the
1366 sender made the log line's construction buffer exactly full, or one byte
1367 less than full, an overflow happened when the terminating "\n" was
1368 subsequently added.
1369
1130bfb0
PH
1370PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1371 when the result of a list match is failure because a DNS lookup failed.
1372
ebcb507f
PH
1373PH/40 RM_COMMAND is now used in the building process.
1374
c35e155c
PH
1375PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1376 the "build-* directories that it finds.
1377
95d1f782
PH
1378PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1379 address in a domain literal was a prefix of an interface address.
1380
fd6de02e
PH
1381PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1382 when verifying a sender address, unless rewrite_headers is false.
1383
58de37c5
PH
1384PH/44 Wrote a long comment about why errors_to addresses are verified as
1385 recipients, not senders.
1386
261cf466
TF
1387TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1388 the ratelimit ACL was added.
1389
3ee512ff
PH
1390PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1391
e08c430f
PH
1392PH/46 Added extra information about PostgreSQL errors to the error string.
1393
bef5a11f
PH
1394PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1395 avoiding the need to install special zones in a real server. This is
1396 backwards compatible; if it can't find the fake resolver, it drops back.
1397 Thus, both old and new test suites can be run.
1398
7546de58
TF
1399TF/02 Added util/ratelimit.pl
1400
e5d5a95f
TF
1401TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1402 clock is set back in time.
1403
2e88a017
TF
1404TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1405 Candler <B.Candler@pobox.com>.
1406
a5f65aa4
TF
1407TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1408 OK for addresses that are the result of redirections.
1409
e7726cbf
PH
1410PH/48 A number of further additions for the benefit of the new test suite,
1411 including a fake gethostbyname() that interfaces to the fake DNS resolver
1412 (see PH/47 above).
1413
a7fdad5b
TF
1414TF/06 The fix for widen_domains has also been applied to qualify_single and
1415 search_parents which are the other dnslookup options that can cause
1416 header rewrites.
1417
6af56900
PH
1418PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1419 type ("H").
1420
0925ede6
PH
1421PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1422
66afa403
TF
1423TF/07 Exim produced the error message "an SRV record indicated no SMTP
1424 service" if it encountered an MX record with an empty target hostname.
1425 The message is now "an MX or SRV record indicated no SMTP service".
1426
0154e85a
TF
1427TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1428 if the DNS of the sending site is misconfigured. This is quite a
1429 common situation. This change restores the behaviour of treating a
1430 helo verification defer as a failure.
1431
16f12c76
PH
1432PH/51 If self=fail was set on a router, the bounce message did not include the
1433 actual error message.
1434
bbe902f0 1435
e5a9dba6
PH
1436Exim version 4.52
1437-----------------
1438
1439TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1440
22c3b60b
PH
1441PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1442 command itself ended in error, the underlying message about the transport
1443 filter timeout was being overwritten with the pipe command error. Now the
1444 underlying error message should be appended to the second error message.
1445
06a9b4b5
PH
1446TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1447
c1ac6996
PH
1448PH/02 Reduce the amount of output that "make" produces by default. Full output
1449 can still be requested.
1450
9c7a242c
PH
1451PH/03 The warning log line about a condition test deferring for a "warn" verb
1452 was being output only once per connection, rather than after each
1453 occurrence (because it was using the same function as for successful
1454 "warn" verbs). This seems wrong, so I have changed it.
1455
87ba3f5f
PH
1456TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1457 it should not have, which might have caused a crash in the right
1458 circumstances, but probably never did.
1459
1460PH/04 Installed a modified version of Tony Finch's patch to make submission
1461 mode fix the return path as well as the Sender: header line, and to
1462 add a /name= option so that you can make the user's friendly name appear
1463 in the header line.
1464
29aba418
TF
1465TF/03 Added the control = fakedefer ACL modifier.
1466
fe0dab11
TF
1467TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1468 Mark Lowes for thorough testing.
870f6ba8 1469
11d337a4
TK
1470TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1471
1472TK/03 Merged latest SRS patch from Miles Wilton.
1473
415c8f3b
PH
1474PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1475 with the definition in sysexits.h (which is #included earlier).
1476 Fortunately, Exim does not actually use EX_OK. The code used to try to
1477 preserve the sysexits.h value, by assumimg that macro definitions were
1478 scanned for macro replacements. I have been disabused of this notion,
1479 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1480
958541e9
PH
1481PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1482 in the smtp transport. When a block could not be written in a single
1483 write() function, the timeout was being re-applied to each part-write.
1484 This seems wrong - if the receiver was accepting one byte at a time it
1485 would take for ever. The timeout is now adjusted when this happens. It
1486 doesn't have to be particularly precise.
1487
c206415f
TK
1488TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1489 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1490
2a4be8f9
PH
1491PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1492 without a domain if the check to <postmaster@domain> fails.
1493
1cba11c5
SC
1494SC/01 Eximstats: added -xls and the ability to specify output files
1495 (patch written by Frank Heydlauf).
1496
1497SC/02 Eximstats: use FileHandles for outputing results.
1498
1499SC/03 Eximstats: allow any combination of xls, txt, and html output.
1500
1501SC/04 Eximstats: fixed display of large numbers with -nvr option
1502
1503SC/05 Eximstats: fixed merging of reports with empty tables.
1504
1505SC/06 Eximstats: added the -include_original_destination flag
1506
1507SC/07 Eximstats: removed tabs and trailing whitespace.
1508
1005d00e
TK
1509TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1510
1511TK/06 MBOX spool code: Add real "From " MBOX separator line
1512 so the .eml file is really in mbox format (even though
1513 most programs do not really care). Patch from Alex Miller.
1514
1515TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1516 The latter is generated from $received_to and is only set if the
1517 message has one envelope recipient. SA can use these headers,
1518 obviously out-of-the-box. Patch from Alex Miller.
1519
9b4768fa
PH
1520PH/08 The ${def test on a variable was returning false if the variable's
1521 value was "0", contrary to what the specification has always said!
1522 The result should be true unless the variable is empty.
1523
1524PH/09 The syntax error of a character other than { following "${if
1525 def:variable_name" (after optional whitespace) was not being diagnosed.
1526 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1527 accidental colon was present, for example, could give incorrect results.
1528
0d7eb84a
PH
1529PH/10 Tidied the code in a number of places where the st_size field of a stat()
1530 result is used (not including appendfile, where other changes are about
1531 to be made).
1532
1533PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1534 This involved changing a lot of size variables from int to off_t. It
1535 should work with maildirs and everything.
1536
40727bee
TK
1537TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1538 spamd dying while we are connected to it.
1539
554d2369
TF
1540TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1541 <jgh@wizmail.org>
1542
1f922db1
PH
1543PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1544 function for BDB 4.3.
1545
ef213c3b
PH
1546PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1547
8ac170f3
PH
1548PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1549 the sources for PCRE have been re-arranged and more files are now
1550 involved.
1551
b1c749bb
PH
1552PH/15 The code I had for printing potentially long long variables in PH/11
1553 above was not the best (it lost precision). The length of off_t variables
1554 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1555 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1556 to be "long long int" or "long int". This is needed for the internal
1557 formatting function string_vformat().
b1c749bb 1558
4aac9b49
PH
1559PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1560 the configuration file to be ":syslog", then the script "guesses" where
1561 the logs files are, rather than using the compiled in default. In our
1562 case the guess is not the same as the compiled default, so the script
1563 suddenly stopped working when I started to use syslog. The patch checks
1564 to see if log_file_path is "". If so, it attempts to read it from exim
1565 with no configuration file to get the compiled in version, before it
1566 falls back to the previous guessing code."
1567
294520c8
TK
1568TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1569 implementing BATV in an Exim configuration. See NewStuff for the gory
1570 details.
1571
5bd022fe
PH
1572PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1573 Makefile that are specific to HP-UX.
1574
90e9ce59
PH
1575PH/18 If the "use_postmaster" option was set for a recipient callout together
1576 with the "random" option, the postmaster address was used as the MAIL
1577 FROM address for the random test, but not for the subsequent recipient
1578 test. It is now used for both.
1579
5ea81592
PH
1580PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1581 patch removes a few documentation additions to RFC 3028, because the
1582 latest draft now contains them. It adds the new en;ascii-case comparator
1583 and a new error check for 8bit text in MIME parts. Comparator and
1584 require names are now matched exactly. I enabled the subaddress
1585 extension, but it is not well tested yet (read: it works for me)."
1586
c6c2dc1d
PH
1587PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1588 rework some of the code of TK/09 above to avoid the hardwired use of
1589 "%lld" and "long long". Replaced the call to snprintf() with a call to
1590 string_vformat().
1591
fffffe4c
PH
1592PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1593 records point to non-existent hosts", "retry timeout exceeded", and
1594 "retry time not reached for any host after a long failure period".
ca02eafb 1595
9a26b6b2
PH
1596PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1597 experimental DomainKeys support:
1598
1599 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1600 (2) On an error such as an illegally used "control", the wrong name for
1601 the control was given.
1602
1603 These problems did NOT occur unless DomainKeys support was compiled.
1604
4aee0225
PH
1605PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1606
32d668a5
PH
1607PH/24 Added ${if match_ip condition.
1608
8187c3f3
PH
1609PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1610 databases so that it will be absolutely obvious if a crash occurs in the
1611 DB library. This is a regular occurrence (often caused by mis-matched
1612 db.h files).
1613
ff790e47 1614PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1615 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1616 picked up on a user's system that detects such things. There doesn't seem
1617 to be a gcc warning option for this - only an attribute that has to be
1618 put on the function's prototype. It seems that in Fedora Core 4 they have
1619 set this on a number of new functions. No doubt there will be more in due
1620 course.
ff790e47 1621
5417f6d1
PH
1622PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1623 specify a transport. However, if an address that was verified by such a
1624 router was the subject of a callout, Exim crashed because it tried to
1625 read the rcpt_include_affixes from the non-existent transport. Now it
1626 just assumes that the setting of that option is false. This bug was
1627 introduced by 4.51/PH/31.
1628
59cf8544
PH
1629PH/28 Changed -d+all to exclude +memory, because that information is very
1630 rarely of interest, but it makes the output a lot bigger. People tend to
1631 do -d+all out of habit.
1632
e7ad8a65
PH
1633PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1634 code in os-type was giving problems when libc.so lives in lib64, like on
1635 x86_64 Fedora Core.
1636
ade42478
PH
1637PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1638 aren't the modern standard, and it seems that some systems' include files
1639 don't always have them. Exim was already checking for some of the newer
1640 ones like T_AAAA, and defining it itself. I've added checks for all the
1641 record types that Exim uses.
1642
182ad5cf
PH
1643PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1644 not automatically generating a new one, as it is supposed to. This
1645 prevented TLS from working. If the file did exist, but contained invalid
1646 data, a new version was generated, as expected. It was only the case of a
1647 non-existent file that was broken.
1648
b0d9fc80
TK
1649TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1650 with a change in libdomainkeys > 0.64.
1651
1652TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1653 from DNS. If the selector record carries the flag, it now has
1654 precedence over the domain-wide flag.
1655
1656TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1657
47c7a64a
PH
1658PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1659 the use of a port name that isn't defined in /etc/services) occurred, the
1660 message was deferred as in a normal delivery, and thus remained on the
1661 spool, instead of being failed because of the mua_wrapper setting. This
1662 is now fixed, and I tidied up some of the mua_wrapper messages at the
1663 same time.
1664
a388bce4
SC
1665SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1666 the messages in a hash of arrays rather than using individual hashes.
1667 This is a bit cleaner and results in dramatic memory savings, albeit
1668 at a slight CPU cost.
1669
1670SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1671 as requested by Marc Sherman.
1672
1673SC/10 Eximstats: added histograms for user specified patterns as requested
1674 by Marc Sherman.
1675
0793e4ed
SC
1676SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1677
c58b88df
PH
1678PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1679 fopen() in the content-scanning modules that did not already have it.
1680
e7ad8a65 1681
7982096b
PH
1682Exim version 4.51
1683-----------------
1684
1a46a8c5
PH
1685TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1686 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1687
2f079f46 1688TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1689
1690TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1691
1692PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1693 to test Sieve filters that use "vacation".
1694
1695PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1696 that changes the way the GnuTLS parameters are stored in the cache file.
1697 The new format can be generated externally. For backward compatibility,
1698 if the data in the cache doesn't make sense, Exim assumes it has read an
1699 old-format file, and it generates new data and writes a new file. This
1700 means that you can't go back to an older release without removing the
1701 file.
1702
1703PH/03 A redirect router that has both "unseen" and "one_time" set does not
1704 work if there are any delivery delays because "one_time" forces the
1705 parent to be marked "delivered", so its unseen clone is never tried
1706 again. For this reason, Exim now forbids the simultaneous setting of
1707 these two options.
1708
1709PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1710 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1711 entry if you want to know the details. The fix, however, neglected to
1712 consider the case when local delivery batching is involved. The test for
1713 "previously delivered" was not happening when checking to see if an
1714 address could be batched with a previous (undelivered) one; under
1715 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1716 address.
1a46a8c5
PH
1717
1718PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1719 in its include files, and this causes problems building Exim.
1720
1721PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1722 header_syntax) but Exim was just ignoring anything given after a slash.
1723 In particular, this caused confusion with an attempt to use "verify =
1724 reverse_host_lookup/defer_ok". An error is now given when options are
1725 supplied for verify items that do not have them. (Maybe reverse_host_
1726 lookup should have a defer_ok option, but that's a different point.)
1727
1728PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1729 defined by RFC 821) to 2048, because there were problems with some AUTH
1730 commands, and RFC 1869 says the size should be increased for extended
1731 SMTP commands that take arguments.
1732
1733PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1734 Finch).
1735
1736PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1737 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1738
49c2d5ea
PH
1739PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1740 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1741 whatever). Otherwise the password may appear in the log. Following change
1742 PH/42 below, there is no longer a chance of it appearing in a bounce
1743 message.
49c2d5ea 1744
bf759a8b
PH
1745PH/11 Installed exipick version 20050225.0 from John Jetmore.
1746
83364d30
PH
1747PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1748 of its addresses was ever tried. (Bugzilla bug #2.)
1749
7999bbd7
PH
1750PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1751 the result incorrectly in the debug output. (It correctly added a newline
1752 to what was transported.)
1753
7dbf77c9
PH
1754TF/01 Added $received_time.
1755
74e0617f
PH
1756PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1757 commented out examples of how to interface to a virus scanner and to
1758 SpamAssassin. Also added commented examples of av_scanner and
1759 spamd_address settings.
1760
2f079f46
PH
1761PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1762 and controls are allowed in which ACLs. There were a couple of minor
1763 errors. Some of the entries in the conditions table (which is a table of
1764 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1765 negation of where the condition IS allowed.
1766
8c841523
PH
1767PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1768
7766a4f0
PH
1769PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1770 header file does not have a version number, so I've had to invent a new
1771 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1772 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1773 radiusclient), but it was contributed by a Radius user.
1774
8b417f2c
PH
1775PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1776 files or directories, for OpenSSL.
1777
901f42cb
PH
1778PH/19 When an Exim process that is running as root has to create an Exim log
1779 file, it does so in a subprocess that runs as exim:exim so as to get the
1780 ownership right at creation (otherwise, other Exim processes might see
1781 the file with the wrong ownership). There was no test for failure of this
1782 fork() call, which would lead to the process getting stuck as it waited
1783 for a non-existent subprocess. Forks do occasionally fail when resources
1784 run out. I reviewed all the other calls to fork(); they all seem to check
1785 for failure.
1786
f9b9210e
PH
1787PH/20 When checking for unexpected SMTP input at connect time (before writing
1788 the banner), Exim was not dealing correctly with a non-positive return
1789 from the read() function. If the client had disconnected by this time,
1790 the result was a log entry for a synchronization error with an empty
1791 string after "input=" when read() returned zero. If read() returned -1
1792 (an event I could not check), uninitialized data bytes were printed.
1793 There were reports of junk text (parts of files, etc) appearing after
1794 "input=".
1795
54cdb463
PH
1796PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1797
cf00dad6
PH
1798PH/22 Added support for macro redefinition, and (re)definition in between
1799 driver and ACL definitions.
1800
acb1b346
PH
1801PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1802 forgetting to use the resulting value; it was using the unexpanded value.
1803
c5ddb310
PH
1804PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1805 hadn't been configured. The fix is from Juergen Kreileder, who
1806 understands it better than I do:
1807
1808 "Here's what I see happening with three configured cyrus_sasl
1809 authenticators configured (plain, login, cram-md5):
1810
1811 On startup auth_cyrus_sasl_init() gets called for each of these.
1812 This means three calls to sasl_listmech() without a specified mech_list.
1813 => SASL tests which mechs of all available mechs actually work
1814 => three warnings about OTP not working
1815 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1816
1817 With the patch, sasl_listmech() also gets called three times. But now
1818 SASL's mech_list option is set to the server_mech specified in the the
1819 authenticator. Or in other words, the answer from sasl_listmech()
1820 gets limited to just the mech you're testing for (which is different
1821 for each call.)
1822 => the return list contains just 'plain' or 'login', 'cram-md5' or
1823 nothing depending on the value of ob->server_mech.
1824
1825 I've just tested the patch: Authentication still works fine,
1826 unavailable mechs specified in the exim configuration are still
1827 caught, and the auth.log warnings about OTP are gone."
1828
31619da6
PH
1829PH/25 When debugging is enabled, the contents of the command line are added
1830 to the debugging output, even when log_selector=+arguments is not
1831 specified.
1832
bebaf0fc
PH
1833PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1834 answer is "GNU", and only if the return is "GNU/something" is the answer
1835 "Linux".
1836
475fe28a
PH
1837PH/27 $acl_verify_message is now set immediately after the failure of a
1838 verification in an ACL, and so is available in subsequent modifiers. In
1839 particular, the message can be preserved by coding like this:
1840
1841 warn !verify = sender
1842 set acl_m0 = $acl_verify_message
1843
1844 Previously, $acl_verify_message was set only while expanding "message"
1845 and "log_message" when a very denied access.
1846
7e8bec7a
PH
1847PH/28 Modified OS/os.c-Linux with
1848
1849 -#ifndef OS_LOAD_AVERAGE
1850 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1851
1852 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1853 nomenclature these days.)
1854
e4a89c47
PH
1855PH/29 Installed patch from the Sieve maintainer that adds the options
1856 sieve_useraddress and sieve_subaddress to the redirect router.
1857
5ca2a9a1
PH
1858PH/30 In these circumstances:
1859 . Two addresses routed to the same list of hosts;
1860 . First host does not offer TLS;
1861 . First host accepts first address;
1862 . First host gives temporary error to second address;
1863 . Second host offers TLS and a TLS session is established;
1864 . Second host accepts second address.
1865 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1866 and peerdn, if requested) that were in fact used only for the second
1867 address.
7e8bec7a 1868
c688b954
PH
1869PH/31 When doing a callout as part of verifying an address, Exim was not paying
1870 attention to any local part prefix or suffix that was matched by the
1871 router that accepted the address. It now behaves in the same way as it
1872 does for delivery: the affixes are removed from the local part unless
1873 rcpt_include_affixes is set on the transport.
1874
fed77020
PH
1875PH/32 Add the sender address, as F=<...>, to the log line when logging a
1876 timeout during the DATA phase of an incoming message.
1877
7fe1560f
PH
1878PH/33 Sieve envelope tests were broken for match types other than :is. I have
1879 applied a patch sanctioned by the Sieve maintainer.
c688b954 1880
ebb6e6d5
PH
1881PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1882 the uid or gid is negative. A case of a negative gid caused this to be
1883 noticed. The fix allows for either to be negative.
1884
9c4e8f60
PH
1885PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1886 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1887 overlooked.
1888
1889PH/36 The change PH/12 above was broken. Fixed it.
1890
d7174846
PH
1891PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1892 the grounds that routing the same address twice would always produce the
1893 same answer. This might have been true once, but it is certainly no
1894 longer true now. Routing a child address may depend on the previous
1895 routing that produced that child. Some complicated redirection strategies
1896 went wrong when messages had multiple recipients, and made Exim's
1897 behaviour dependent on the order in which the addresses were given.
1898
1899 I have moved the duplicate checking until after the routing is complete.
1900 Exim scans the addresses that are assigned to local and remote
1901 transports, and removes any duplicates. This means that more work will be
1902 done, as duplicates will always all be routed, but duplicates are
1903 presumably rare, so I don't expect this is of any significance.
1904
1905 For deliveries to pipes, files, and autoreplies, the duplicate checking
1906 still happens during the routing process, since they are not going to be
1907 routed further.
1908
cfe75fc3
PH
1909PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1910 It corrects a timeout issue with spamd. This is Ian's comment: "The
1911 background is that sometimes spamd either never reads data from a
1912 connection it has accepted, or it never writes response data. The exiscan
1913 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1914 blindly assumes that writes won't block so it may never time out."
1915
be22d70e
PH
1916PH/39 Allow G after quota size as well as K and M.
1917
0612b098
PH
1918PH/40 The value set for $authenticated_id in an authenticator may not contain
1919 binary zeroes or newlines because the value is written to log lines and
1920 to spool files. There was no check on this. Now the value is run through
1921 the string_printing() function so that such characters are converted to
1922 printable escape sequences.
1923
2e0c1448
PH
1924PH/41 $message_linecount is a new variable that contains the total number of
1925 lines in the message. Compare $body_linecount, which is the count for the
1926 body only.
1927
447d236c
PH
1928PH/42 Exim no longer gives details of delivery errors for specific addresses in
1929 bounce and delay warning messages, except in certain special cases, which
1930 are as follows:
1931
1932 (a) An SMTP error message from a remote host;
1933 (b) A message specified in a :fail: redirection;
1934 (c) A message specified in a "fail" command in a system filter;
1935 (d) A message specified in a FAIL return from the queryprogram router;
1936 (e) A message specified by the cannot_route_message router option.
1937
1938 In these cases only, Exim does include the error details in bounce and
1939 warning messages. There are also a few cases where bland messages such
1940 as "unrouteable address" or "local delivery error" are given.
1941
d20976dc
PH
1942PH/43 $value is now also set for the "else" part of a ${run expansion.
1943
f656d135
PH
1944PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1945 being worked on, but at least Exim now implements the latest version to
1946 play with."
1947
2e2a30b4
PH
1948PH/45 In a pipe transport, although a timeout while waiting for the pipe
1949 process to complete was treated as a delivery failure, a timeout while
1950 writing the message to the pipe was logged, but erroneously treated as a
1951 successful delivery. Such timeouts include transport filter timeouts. For
1952 consistency with the overall process timeout, these timeouts are now
1953 treated as errors, giving rise to delivery failures by default. However,
1954 there is now a new Boolean option for the pipe transport called
1955 timeout_defer, which, if set TRUE, converts the failures into defers for
1956 both kinds of timeout. A transport filter timeout is now identified in
1957 the log output.
1958
9176e9f0
PH
1959PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1960 systems where "make" and "gmake" are different, calling "gmake" at top
1961 level broke things. I've arranged for the value of $(MAKE) to be passed
1962 from the Makefile to this script so that it can call the same version of
1963 "make".
1964
7982096b 1965
bbe902f0
PH
1966A note about Exim versions 4.44 and 4.50
1967----------------------------------------
1968
1969Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1970changes of various kinds. As a consequence, a big documentation update was
1971needed. This delayed the release for rather longer than seemed good, especially
1972in the light of a couple of (minor) security issues. Therefore, the changes
1973that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1974release. So 4.44 and 4.50 are in effect two different branches that both start
1975from 4.43.
1976
1977I have left the 4.50 change log unchanged; it contains all the changes since
19784.43. The change log for 4.44 is below; many of its items are identical to
1979those for 4.50. This seems to be the most sensible way to preserve the
1980historical information.
1981
1982
f7b63901 1983Exim version 4.50
495ae4b0
PH
1984-----------------
1985
5fe762f6
PH
1986 1. Minor wording change to the doc/README.SIEVE file.
1987
139059f6 1988 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1989 computation of the current number of files was incorrect.
495ae4b0 1990
7086e875
PH
1991 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1992 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1993 place.
1994
35af9f61
PH
1995 4. Give more explanation in the error message when the command for a transport
1996 filter fails to execute.
1997
b668c215
PH
1998 5. There are several places where Exim runs a non-Exim command in a
1999 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2000 was being done only for the command run by the queryprogram router. It is
2001 now done for all such subprocesses. The other cases are: ${run, transport
2002 filters, and the commands run by the lmtp and pipe transports.
2003
a494b1e1
PH
2004 6. Added CONFIGURE_GROUP build-time option.
2005
2006 7. Some older OS have a limit of 256 on the maximum number of file
2007 descriptors. Exim was using setrlimit() to set 1000 as a large value
2008 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2009 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2010
c5fcb476
PH
2011 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2012 was an oversight, and furthermore, ever since the addition of extra
2013 controls (e.g. 4.43/32), the checks on when to allow different forms of
2014 "control" were broken. There should now be diagnostics for all cases when a
2015 control that does not make sense is encountered.
2016
69358f02
PH
2017 9. Added the /retain_sender option to "control=submission".
2018
5be20824
PH
201910. $recipients is now available in the predata ACL (oversight).
2020
eb2c0248
PH
202111. Tidy the search cache before the fork to do a delivery from a message
2022 received from the command line. Otherwise the child will trigger a lookup
2023 failure and thereby defer the delivery if it tries to use (for example) a
2024 cached ldap connection that the parent has called unbind on.
2025
2a3eea10
PH
202612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2027 of $address_data from the recipient verification was clobbered by the
2028 sender verification.
2029
203013. The value of address_data from a sender verification is now available in
2031 $sender_address_data in subsequent conditions in the ACL statement.
2032
23c7ff99
PH
203314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2034
4deaf07d
PH
203515. Added a new option "connect=<time>" to callout options, to set a different
2036 connection timeout.
2037
926e1192
PH
203816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2039 was its contents. (It was OK if the option was not defined at all.)
2040
650edc6f
PH
204117. A "Completed" log line is now written for messages that are removed from
2042 the spool by the -Mrm option.
2043
2c7db3f5
PH
204418. New variables $sender_verify_failure and $recipient_verify_failure contain
2045 information about exactly what failed.
2046
3d235903
PH
204719. Added -dd to debug only the daemon process.
2048
7c7ad977
PH
204920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2050 handles timeouts, both on the server side and network timeouts. Renamed the
2051 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2052
981756db
PH
205321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2054 It is now set to "smtps".
2055
d4eb88df
PH
205622. $host_address is now set to the target address during the checking of
2057 ignore_target_hosts.
2058
205923. When checking ignore_target_hosts for an ipliteral router, no host name was
2060 being passed; this would have caused $sender_host_name to have been used if
2061 matching the list had actually called for a host name (not very likely,
2062 since this list is usually IP addresses). A host name is now passed as
2063 "[x.x.x.x]".
2064
7d468ab8
PH
206524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2066 code that specifies a non-restarting handler (typically sigaction() in
2067 modern systems) in an attempt to fix a rare and obscure crash bug.
2068
206925. Narrowed the window for a race in the daemon that could cause it to ignore
2070 SIGCHLD signals. This is not a major problem, because they are used only to
2071 wake it up if nothing else does.
2072
62c0818f
PH
207326. A malformed maildirsize file could cause Exim to calculate negative values
2074 for the mailbox size or file count. Odd effects could occur as a result.
2075 The maildirsize information is now recalculated if the size or filecount
2076 end up negative.
2077
26034054
PH
207827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2079 support for a long time. Removed HAVE_SYS_VFS_H.
2080
af66f652
PH
208128. Installed the latest version of exipick from John Jetmore.
2082
90af77f4
PH
208329. In an address list, if the pattern was not a regular expression, an empty
2084 subject address (from a bounce message) matched only if the pattern was an
2085 empty string. Non-empty patterns were not even tested. This was the wrong
2086 because it is perfectly reasonable to use an empty address as part of a
2087 database query. An empty address is now tested by patterns that are
2088 lookups. However, all the other forms of pattern expect the subject to
2089 contain a local part and a domain, and therefore, for them, an empty
2090 address still always fails if the pattern is not itself empty.
2091
d8ef3577
PH
209230. Exim went into a mad DNS loop when attempting to do a callout where the
2093 host was specified on an smtp transport, and looking it up yielded more
2094 than one IP address.
2095
5cb8cbc6
PH
209631. Re-factored the code for checking spool and log partition space into a
2097 function that finds that data and another that does the check. The former
2098 is then used to implement four new variables: $spool_space, $log_space,
2099 $spool_inodes, and $log_inodes.
2100
14702f5b
PH
210132. The RFC2047 encoding function was originally intended for short strings
2102 such as real names; it was not keeping to the 75-character limit for
2103 encoded words that the RFC imposes. It now respects the limit, and
2104 generates multiple encoded words if necessary. To be on the safe side, I
2105 have increased the buffer size for the ${rfc2047: expansion operator from
2106 1024 to 2048 bytes.
2107
063b1e99
PH
210833. It is now permitted to omit both strings after an "if" condition; if the
2109 condition is true, the result is "true". As before, when the second string
2110 is omitted, a false condition yields an empty string. This makes it less
2111 cumbersome to write custom ACL and router conditions.
2112
652e1b65
PH
211334. Failure to deliver a bounce message always caused it to be frozen, even if
2114 there was an errors_to setting on the router. The errors_to setting is now
2115 respected.
2116
6f0c9a4f
PH
211735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2118 canonical form (fully expanded) before being placed in
2119 $sender_host_address.
2120
33397d19
PH
212136. The table in the code that translates DNS record types into text (T_A to
2122 "A" for instance) was missing entries for NS and CNAME. It is just possible
2123 that this could have caused confusion if both these types were looked up
2124 for the same domain, because the text type is used as part of Exim's
2125 per-process caching. But the chance of anyone hitting this buglet seems
2126 very small.
2127
7bb56e1f
PH
212837. The dnsdb lookup has been extended in a number of ways.
2129
2130 (1) There is a new type, "zns", which walks up the domain tree until it
2131 finds some nameserver records. It should be used with care.
2132
ea3bc19b
PH
2133 (2) There is a new type, "mxh", which is like "mx" except that it returns
2134 just the host names, not the priorities.
2135
2136 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2137 looked up. The behaviour when one of the lookups defers can be
2138 controlled by a keyword.
7bb56e1f 2139
ea3bc19b 2140 (4) It is now possible to specify the separator character for use when
7bb56e1f 2141 multiple records are returned.
33397d19 2142
0bcb2a0e
PH
214338. The dnslists ACL condition has been extended: it is now possible to supply
2144 a list of IP addresses and/or domains to be looked up in a particular DNS
2145 domain.
2146
2ac0e484
PH
214739. Added log_selector=+queue_time_overall.
2148
4e1fde53
PH
214940. When running the queue in the test harness, wait just a tad after forking a
2150 delivery process, to get repeatability of debugging output.
2151
de365ded
PH
215241. Include certificate and key file names in error message when GnuTLS fails
2153 to set them up, because the GnuTLS error message doesn't include the name
2154 of the failing file when there is a problem reading it.
2155
f05da2e8
PH
215642. Allow both -bf and -bF in the same test run.
2157
d6453af2
PH
215843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2159
f7b63901
PH
216044. The "Exiscan patch" is now merged into the mainline Exim source.
2161
216245. Sometimes the final signoff response after QUIT could fail to get
2163 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2164 < 0 before doing a fflush(). This bug looks as though it goes back to the
2165 introduction of TLS in release 3.20, but "sometimes" must have been rare
2166 because the tests only now provoked it.
2167
a444213a
PH
216846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2169 (this can affect the format of dates).
2170
0ec020ea
PH
217147. exim_tidydb, when checking for the continued existence of a message for
2172 which it has found a message-specific retry record, was not finding
2173 messages that were in split spool directories. Consequently, it was
2174 deleting retry records that should have stayed in existence.
2175
b1206957
PH
217648. Steve fixed some bugs in eximstats.
2177
217849. The SPA authentication driver was not abandoning authentication and moving
2179 on to the next authenticator when an expansion was forced to fail,
2180 contradicting the general specification for all authenticators. Instead it
2181 was generating a temporary error. It now behaves as specified.
2182
26dd5a95
PH
218350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2184 (the order specifies the preference for clients). The order is now AES256,
2185 AES128, 3DES, ARCFOUR128.
2186
343b2385
PH
218751. Small patch to Sieve code - explicitly set From: when generating an
2188 autoreply.
2189
1c5466b9
PH
219052. Exim crashed if a remote delivery caused a very long error message to be
2191 recorded - for instance if somebody sent an entire SpamAssassin report back
2192 as a large number of 550 error lines. This bug was coincidentally fixed by
2193 increasing the size of one of Exim's internal buffers (big_buffer) that
2194 happened as part of the Exiscan merge. However, to be on the safe side, I
2195 have made the code more robust (and fixed the comments that describe what
2196 is going on).
2197
55ee9ee3
PH
219853. Now that there can be additional text after "Completed" in log lines (if
2199 the queue_time_overall log selector is set), a one-byte patch to exigrep
2200 was needed to allow it to recognize "Completed" as not the last thing in
2201 the line.
2202
d38f8232
PH
220354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2204 patch that reportedly fixes this has been added. I am not expert enough to
2205 create a test for it. This is what the patch creator wrote:
2206
2207 "I found a little strange behaviour of ldap code when working with
2208 Windows 2003 AD Domain, where users was placed in more than one
2209 Organization Units. When I tried to give exim partial DN, the exit code
2210 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2211 But simultaneously result of request was absolutely normal ldap result,
2212 so I produce this patch..."
2213
3295e65b
PH
2214 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2215 REFERENCE, so I have modified the code to exclude the patch when that macro
2216 is not defined.
2217
7102e136
PH
221855. Some experimental protocols are using DNS PTR records for new purposes. The
2219 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2220 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2221 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2222 CAN-2005-0021
7102e136 2223
3ca0ba97
PH
222456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2225
c2bcbe20
PH
222657. Double the size of the debug message buffer (to 2048) so that more of very
2227 long debug lines gets shown.
2228
18ce445d
PH
222958. The exicyclog utility now does better if the number of log files to keep
2230 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2231
1f5b4c3d
PH
223259. Two changes related to the smtp_active_hostname option:
2233
2234 (1) $smtp_active_hostname is now available as a variable.
2235 (2) The default for smtp_banner uses $smtp_active_hostname instead
2236 of $primary_hostname.
2237
b975ba52
PH
223860. The host_aton() function is supposed to be passed a string that is known
2239 to be a valid IP address. However, in the case of IPv6 addresses, it was
2240 not checking this. This is a hostage to fortune. Exim now panics and dies
2241 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2242 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2243 components; fortuitously, this particular loophole had already been fixed
2244 by change 4.50/55 above.
2245
2246 If there are any other similar loopholes, the new check in host_aton()
2247 itself should stop them being exploited. The report I received stated that
2248 data on the command line could provoke the exploit when Exim was running as
2249 exim, but did not say which command line option was involved. All I could
2250 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2251 running as the user.
ea3a6f44 2252 CAN-2005-0021
85b87bc2
PH
2253
225461. There was a buffer overflow vulnerability in the SPA authentication code
2255 (which came originally from the Samba project). I have added a test to the
2256 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2257 CAN-2005-0022
b975ba52 2258
17ffcae7
PH
225962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2260 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2261
d95f9fdb
PH
226263. The daemon start-up calls getloadavg() while still root for those OS that
2263 need the first call to be done as root, but it missed one case: when
2264 deliver_queue_load_max is set with deliver_drop_privilege. This is
2265 necessary for the benefit of the queue runner, because there is no re-exec
2266 when deliver_drop_privilege is set.
2267
86b8287f
PH
226864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2269 This has been fixed.
2270
60dc5e56
PH
227165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2272 was in use, was not putting the data itself into the right store pool;
2273 consequently, it could be overwritten for a subsequent message in the same
2274 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2275 the caching.)
2276
533244af
PH
227766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2278
a5a28604
PH
227967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2280 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2281 the function were treating the return as a boolean value, which happened to
2282 work because 0=false and not-0=true, but is not correct code.
2283
7e634d24
PH
228468. The host_aton() function was not handling scoped IPv6 addresses (those
2285 with, for example, "%eth0" on the end) correctly.
2286
3e11c26b
PH
228769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2288 negated items (that is, ~something) in unsigned ints. Some compilers
2289 apparently mutter when there is no cast.
2290
6729cf78
PH
229170. If an address verification called from an ACL failed, and did not produce a
2292 user-specific message (i.e. there was only a "system" message), nothing was
2293 put in $acl_verify_message. In this situation, it now puts the system
2294 message there.
2295
00f00ca5
PH
229671. Change 4.23/11 added synchronization checking at the start of an SMTP
2297 session; change 4.31/43 added the unwanted input to the log line - except
2298 that it did not do this in the start of session case. It now does.
2299
c9bdd01c
PH
230072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2301 This is wrong and can cause the other end to generate a synchronization
2302 error if it is another Exim or anything else that does the synchronization
2303 check. A QUIT command is no longer sent after a timeout.
2304
d43194df
PH
230573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2306 during host lookups.
2307
fe5b5d0b
PH
230874. The defer_ok option of callout verification was not working if it was used
2309 when verifying addresses in header lines, that is, for this case:
2310
2311 verify = header_sender/callout=defer_ok
2312
76a2d7ba
PH
231375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2314 those file descriptors could be used for SMTP connections. If anything
2315 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2316 could be sent to the SMTP client, causing chaos. The daemon now opens
2317 stdin, stdout, and stderr to /dev/null when it puts itself into the
2318 background.
2319
232076. Arrange for output from Perl's "warn" command to be written to Exim's main
2321 log by default. The user can override this with suitable Perl magic.
2322
04f7d5b9
PH
232377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2324 the log message when discard triggers, was not working for the DATA ACL or
2325 for the non-SMTP ACL.
2326
bc60667e
PH
232778. Error message wording change in sieve.c.
2328
bb6e88ff
PH
232979. If smtp_accept_max_per_host was set, the number of connections could be
2330 restricted to fewer than expected, because the daemon was trying to set up
2331 a new connection before checking whether the processes handling previous
2332 connections had finished. The check for completed processes is now done
2333 earlier. On busy systems, this bug wouldn't be noticed because something
2334 else would have woken the daemon, and it would have reaped the completed
2335 process earlier.
2336
1e70f85b
PH
233780. If a message was submitted locally by a user whose login name contained one
2338 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2339 It caused a spool format error. I have fixed the spool reading code. A
2340 related problem was that the "from" clause in the Received: line became
2341 illegal because of the space(s). It is now covered by ${quote_local_part.
2342
234381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2344 tables).
2345
4e01f9d6
PH
234682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2347
1ee1cef2
PH
234883. Patch from Sieve maintainer to fix unterminated string problem in
2349 "vacation" handling.
2350
6e2b4ccc
PH
235184. Some minor changes to the Linux configuration files to help with other
2352 OS variants using glibc.
2353
8e669ac1
PH
235485. One more patch for Sieve to update vacation handling to latest spec.
2355
495ae4b0 2356
bbe902f0
PH
2357----------------------------------------------------
2358See the note above about the 4.44 and 4.50 releases.
2359----------------------------------------------------
2360
2361
2362Exim version 4.44
2363-----------------
2364
2365 1. Change 4.43/35 introduced a bug that caused file counts to be
2366 incorrectly computed when quota_filecount was set in an appendfile
2367 transport
2368
2369 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2370 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2371 place.
2372
2373 3. Give more explanation in the error message when the command for a transport
2374 filter fails to execute.
2375
2376 4. There are several places where Exim runs a non-Exim command in a
2377 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2378 was being done only for the command run by the queryprogram router. It is
2379 now done for all such subprocesses. The other cases are: ${run, transport
2380 filters, and the commands run by the lmtp and pipe transports.
2381
2382 5. Some older OS have a limit of 256 on the maximum number of file
2383 descriptors. Exim was using setrlimit() to set 1000 as a large value
2384 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2385 systems. I've change it so that if it can't get 1000, it tries for 256.
2386
2387 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2388 was an oversight, and furthermore, ever since the addition of extra
2389 controls (e.g. 4.43/32), the checks on when to allow different forms of
2390 "control" were broken. There should now be diagnostics for all cases when a
2391 control that does not make sense is encountered.
2392
2393 7. $recipients is now available in the predata ACL (oversight).
2394
2395 8. Tidy the search cache before the fork to do a delivery from a message
2396 received from the command line. Otherwise the child will trigger a lookup
2397 failure and thereby defer the delivery if it tries to use (for example) a
2398 cached ldap connection that the parent has called unbind on.
2399
2400 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2401 of $address_data from the recipient verification was clobbered by the
2402 sender verification.
2403
240410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2405 was its contents. (It was OK if the option was not defined at all.)
2406
240711. A "Completed" log line is now written for messages that are removed from
2408 the spool by the -Mrm option.
2409
241012. $host_address is now set to the target address during the checking of
2411 ignore_target_hosts.
2412
241313. When checking ignore_target_hosts for an ipliteral router, no host name was
2414 being passed; this would have caused $sender_host_name to have been used if
2415 matching the list had actually called for a host name (not very likely,
2416 since this list is usually IP addresses). A host name is now passed as
2417 "[x.x.x.x]".
2418
241914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2420 code that specifies a non-restarting handler (typically sigaction() in
2421 modern systems) in an attempt to fix a rare and obscure crash bug.
2422
242315. Narrowed the window for a race in the daemon that could cause it to ignore
2424 SIGCHLD signals. This is not a major problem, because they are used only to
2425 wake it up if nothing else does.
2426
242716. A malformed maildirsize file could cause Exim to calculate negative values
2428 for the mailbox size or file count. Odd effects could occur as a result.
2429 The maildirsize information is now recalculated if the size or filecount
2430 end up negative.
2431
243217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2433 support for a long time. Removed HAVE_SYS_VFS_H.
2434
ea3a6f44 243518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2436
243719. Allow an empty sender to be matched against a lookup in an address list.
2438 Previously the only cases considered were a regular expression, or an
2439 empty pattern.
2440
244120. Exim went into a mad DNS lookup loop when doing a callout where the
2442 host was specified on the transport, if the DNS lookup yielded more than
2443 one IP address.
2444
ea3a6f44
NM
244521. The RFC2047 encoding function was originally intended for short strings
2446 such as real names; it was not keeping to the 75-character limit for
2447 encoded words that the RFC imposes. It now respects the limit, and
2448 generates multiple encoded words if necessary. To be on the safe side, I
2449 have increased the buffer size for the ${rfc2047: expansion operator from
2450 1024 to 2048 bytes.
bbe902f0 2451
ea3a6f44
NM
245222. Failure to deliver a bounce message always caused it to be frozen, even if
2453 there was an errors_to setting on the router. The errors_to setting is now
2454 respected.
bbe902f0
PH
2455
245623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2457 canonical form (fully expanded) before being placed in
2458 $sender_host_address.
2459
246024. Updated eximstats to version 1.33
2461
ea3a6f44
NM
246225. Include certificate and key file names in error message when GnuTLS fails
2463 to set them up, because the GnuTLS error message doesn't include the name
2464 of the failing file when there is a problem reading it.
bbe902f0
PH
2465
246626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2467 As per change 25.
bbe902f0 2468
ea3a6f44
NM
246927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2470 (this can affect the format of dates).
bbe902f0 2471
ea3a6f44
NM
247228. exim_tidydb, when checking for the continued existence of a message for
2473 which it has found a message-specific retry record, was not finding
2474 messages that were in split spool directories. Consequently, it was
2475 deleting retry records that should have stayed in existence.
bbe902f0
PH
2476
247729. eximstats updated to version 1.35
2478 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2479 1.35 - bugfix such that pie charts by volume are generated correctly
2480
ea3a6f44
NM
248130. The SPA authentication driver was not abandoning authentication and moving
2482 on to the next authenticator when an expansion was forced to fail,
2483 contradicting the general specification for all authenticators. Instead it
2484 was generating a temporary error. It now behaves as specified.
bbe902f0 2485
ea3a6f44
NM
248631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2487 (the order specifies the preference for clients). The order is now AES256,
2488 AES128, 3DES, ARCFOUR128.
bbe902f0 2489
ea3a6f44
NM
249031. Small patch to Sieve code - explicitly set From: when generating an
2491 autoreply.
bbe902f0 2492
ea3a6f44
NM
249332. Exim crashed if a remote delivery caused a very long error message to be
2494 recorded - for instance if somebody sent an entire SpamAssassin report back
2495 as a large number of 550 error lines. This bug was coincidentally fixed by
2496 increasing the size of one of Exim's internal buffers (big_buffer) that
2497 happened as part of the Exiscan merge. However, to be on the safe side, I
2498 have made the code more robust (and fixed the comments that describe what
2499 is going on).
bbe902f0 2500
ea3a6f44
NM
250133. Some experimental protocols are using DNS PTR records for new purposes. The
2502 keys for these records are domain names, not reversed IP addresses. The
2503 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2504 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2505 CAN-2005-0021
2506
ea3a6f44
NM
250734. The host_aton() function is supposed to be passed a string that is known
2508 to be a valid IP address. However, in the case of IPv6 addresses, it was
2509 not checking this. This is a hostage to fortune. Exim now panics and dies
2510 if the condition is not met. A case was found where this could be provoked
2511 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2512 components; fortuitously, this particular loophole had already been fixed
2513 by change 4.50/55 or 4.44/33 above.
2514
2515 If there are any other similar loopholes, the new check in host_aton()
2516 itself should stop them being exploited. The report I received stated that
2517 data on the command line could provoke the exploit when Exim was running as
2518 exim, but did not say which command line option was involved. All I could
2519 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2520 running as the user.
bbe902f0
PH
2521 CAN-2005-0021
2522
ea3a6f44
NM
252335. There was a buffer overflow vulnerability in the SPA authentication code
2524 (which came originally from the Samba project). I have added a test to the
2525 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2526 CAN-2005-0022
2527
ea3a6f44
NM
252836. The daemon start-up calls getloadavg() while still root for those OS that
2529 need the first call to be done as root, but it missed one case: when
2530 deliver_queue_load_max is set with deliver_drop_privilege. This is
2531 necessary for the benefit of the queue runner, because there is no re-exec
2532 when deliver_drop_privilege is set.
bbe902f0 2533
ea3a6f44
NM
253437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2535 was in use, was not putting the data itself into the right store pool;
2536 consequently, it could be overwritten for a subsequent message in the same
2537 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2538 the caching.)
bbe902f0 2539
ea3a6f44
NM
254038. Sometimes the final signoff response after QUIT could fail to get
2541 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2542 < 0 before doing a fflush(). This bug looks as though it goes back to the
2543 introduction of TLS in release 3.20, but "sometimes" must have been rare
2544 because the tests only now provoked it.
bbe902f0
PH
2545
2546
495ae4b0
PH
2547Exim version 4.43
2548-----------------
2549
2550 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2551 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2552 Now it returns an integer. A number of calls were still expecting a T/F
2553 return. Fortuitously, in all cases, the tests worked in OK situations,
2554 which is the norm. However, things would have gone wrong on any write
2555 failures on the smtp file descriptor. This function is used when sending
2556 messages over SMTP and also when doing verify callouts.
2557
2558 2. When Exim is called to do synchronous delivery of a locally submitted
2559 message (the -odf or -odi options), it no longer closes stderr before doing
2560 the delivery.
2561
2562 3. Implemented the mua_wrapper option.
2563
2564 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2565
2566 5. Implemented the functions header_remove(), header_testname(),
2567 header_add_at_position(), and receive_remove_recipient(), and exported them
2568 to local_scan().
2569
2570 6. If an ACL "warn" statement specified the addition of headers, Exim already
2571 inserted X-ACL-Warn: at the start if there was no header name. However, it
2572 was not making this test for the second and subsequent header lines if
2573 there were newlines in the string. This meant that an invalid header could
2574 be inserted if Exim was badly configured.
2575
2576 7. Allow an ACL "warn" statement to add header lines at the start or after all
2577 the Received: headers, as well as at the end.
2578
2579 8. Added the rcpt_4xx retry error code.
2580
2581 9. Added postmaster_mailfrom=xxx to callout verification option.
2582
258310. Added mailfrom=xxxx to the callout verification option, for verify=
2584 header_sender only.
2585
258611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2587 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2588
258912. Inserted some casts to stop certain compilers warning when using pointer
2590 differences as field lengths or precisions in printf-type calls (mostly
2591 affecting debugging statements).
2592
259313. Added optional readline() support for -be (dynamically loaded).
2594
259514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2596 same clock tick as a message's arrival, so that its received time was the
2597 same as the "first fail" time on the retry record, and that message
2598 remained on the queue past the ultimate address timeout, every queue runner
2599 would try a delivery (because it was past the ultimate address timeout) but
2600 after another failure, the ultimate address timeout, which should have then
2601 bounced the address, did not kick in. This was a "< instead of <=" error;
2602 in most cases the first failure would have been in the next clock tick
2603 after the received time, and all would be well.
2604
260515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2606 being recognized when the domain list was tested by the match_domain
2607 condition in an expansion string.
2608
260916. Added the ${str2b64: operator.
2610
261117. Exim was always calling setrlimit() to set a large limit for the number of
2612 processes, without checking whether the existing limit was already
2613 adequate. (It did check for the limit on file descriptors.) Furthermore,
2614 errors from getrlimit() and setrlimit() were being ignored. Now they are
2615 logged to the main and panic logs, but Exim does carry on, to try to do its
2616 job under whatever limits there are.
2617
261818. Imported PCRE 5.0.
2619
262019. Trivial typo in log message " temporarily refused connection" (the leading
2621 space).
2622
262320. If the log selector return_path_on_delivery was set and an address was
2624 redirected to /dev/null, the delivery process crashed because it assumed
2625 that a return path would always be set for a "successful" delivery. In this
2626 case, the whole delivery is bypassed as an optimization, and therefore no
2627 return path is set.
2628
262921. Internal re-arrangement: the function for sending a challenge and reading
2630 a response while authentication was assuming a zero-terminated challenge
2631 string. It's now changed to take a pointer and a length, to allow for
2632 binary data in such strings.
2633
263422. Added the cyrus_sasl authenticator (code supplied by MBM).
2635
263623. Exim was not respecting finduser_retries when seeking the login of the
2637 uid under which it was called; it was always trying 10 times. (The default
2638 setting of finduser_retries is zero.) Also, it was sleeping after the final
2639 failure, which is pointless.
2640
264124. Implemented tls_on_connect_ports.
2642
264325. Implemented acl_smtp_predata.
2644
264526. If the domain in control=submission is set empty, Exim assumes that the
2646 authenticated id is a complete email address when it generates From: or
2647 Sender: header lines.
2648
264927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2650 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2651 chown and chgrp in /bin and hostname in /usr/bin.
2652
265328. Exim was keeping the "process log" file open after each use, just as it
2654 does for the main log. This opens the possibility of it remaining open for
2655 long periods when the USR1 signal hits a daemon. Occasional processlog
2656 errors were reported, that could have been caused by this. Anyway, it seems
2657 much more sensible not to leave this file open at all, so that is what now
2658 happens.
2659
266029. The long-running daemon process does not normally write to the log once it
2661 has entered its main loop, and it closes the log before doing so. This is
2662 so that log files can straightforwardly be renamed and moved. However,
2663 there are a couple of unusual error situations where the daemon does write
2664 log entries, and I had neglected to close the log afterwards.
2665
266630. The text of an SMTP error response that was received during a remote
2667 delivery was being truncated at 512 bytes. This is too short for some of
2668 the long messages that one sometimes sees. I've increased the limit to
2669 1024.
2670
267131. It is now possible to make retry rules that apply only when a message has a
2672 specific sender, in particular, an empty sender.
2673
267432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2675 it possible to be selective about when SMTP synchronization is enforced.
2676
267733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2678
267932. Implemented hosts_connection_nolog.
2680
268133. Added an ACL for QUIT.
2682
268334. Setting "delay_warning=" to disable warnings was not working; it gave a
2684 syntax error.
2685
268635. Added mailbox_size and mailbox_filecount to appendfile.
2687
268836. Added control = no_multiline_responses to ACLs.
2689
269037. There was a bug in the logic of the code that waits for the clock to tick
2691 in the case where the clock went backwards by a substantial amount such
2692 that the microsecond fraction of "now" was more than the microsecond
2693 fraction of "then" (but the whole seconds number was less).
2694
269538. Added support for the libradius Radius client library this is found on
2696 FreeBSD (previously only the radiusclient library was supported).
2697
2698
2699Exim version 4.42
2700-----------------
2701
2702 1. When certain lookups returned multiple values in the form name=value, the
2703 quoting of the values was not always being done properly. Specifically:
2704 (a) If the value started with a double quote, but contained no whitespace,
2705 it was not quoted.
2706 (b) If the value contained whitespace other than a space character (i.e.
2707 tabs or newlines or carriage returns) it was not quoted.
2708 This fix has been applied to the mysql and pgsql lookups by writing a
2709 separate quoting function and calling it from the lookup code. The fix
2710 should probably also be applied to nisplus, ibase and oracle lookups, but
2711 since I cannot test any of those, I have not disturbed their existing code.
2712
2713 2. A hit in the callout cache for a specific address caused a log line with no
2714 reason for rejecting RCPT. Now it says "Previous (cached) callout
2715 verification failure".
2716
2717 3. There was an off-by-one bug in the queryprogram router. An over-long
2718 return line was truncated at 256 instead of 255 characters, thereby
2719 overflowing its buffer with the terminating zero. As well as fixing this, I
2720 have increased the buffer size to 1024 (and made a note to document this).
2721
2722 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2723 when Exim is waiting for an SMTP response from a remote server, Exim
2724 restarts its select() call on the socket, thereby resetting its timeout.
2725 This is not a problem when such interrupts are rare. Somebody set up a cron
2726 job to run exiwhat every 2 minutes, which is less than the normal select()
2727 timeout (5 or 10 minutes). This meant that the select() timeout never
2728 kicked in because it was always reset. I have fixed this by comparing the
2729 time when an interrupt arrives with the time at the start of the first call
2730 to select(). If more time than the timeout has elapsed, the interrupt is
2731 treated as a timeout.
2732
2733 5. Some internal re-factoring in preparation for the addition of Sieve
2734 extensions (by MH). In particular, the "personal" test is moved to a
2735 separate function, and given an option for scanning Cc: and Bcc: (which is
2736 not set for Exim filters).
2737
2738 6. When Exim created an email address using the login of the caller as the
2739 local part (e.g. when creating a From: or Sender: header line), it was not
2740 quoting the local part when it contained special characters such as @.
2741
2742 7. Installed new OpenBSD configuration files.
2743
2744 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2745 try to make them clearer.
2746
2747 9. Callout options, other than the timeout value, were being ignored when
2748 verifying sender addresses in header lines. For example, when using
2749
2750 verify = header_sender/callout=no_cache
2751
2752 the cache was (incorrectly) being used.
2753
275410. Added a missing instance of ${EXE} to the exim_install script; this affects
2755 only the Cygwin environment.
2756
275711. When return_path_on_delivery was set as a log selector, if different remote
2758 addresses in the same message used different return paths and parallel
2759 remote delivery occurred, the wrong values would sometimes be logged.
2760 (Whenever a remote delivery process finished, the return path value from
2761 the most recently started remote delivery process was logged.)
2762
276312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2764 lines when AUTH and/or TLS are in use. This is the "received protocol"
2765 field. Exim used to use "asmtp" for authenticated SMTP, without any
2766 indication (in the protocol name) for TLS use. Now it follows the RFC and
2767 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2768 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2769 names appear in log lines as well as in Received: header lines.
2770
277113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2772 extensions, and comparison tests, and to fix some bugs.
2773
277414. Changes to the "personal" filter test:
2775
2776 (1) The test was buggy in that it was just doing the equivalent of
2777 "contains" tests on header lines. For example, if a user's address was
2778 anne@some.where, the "personal" test would incorrectly be true for
2779
2780 To: susanne@some.where
2781
2782 This test is now done by extracting each address from the header in turn,
2783 and checking the entire address. Other tests that are part of "personal"
2784 are now done using regular expressions (for example, to check local parts
2785 of addresses in From: header lines).
2786
2787 (2) The list of non-personal local parts in From: addresses has been
2788 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2789 taken from the Sieve specification recommendations.
2790
2791 (3) If the message contains any header line starting with "List-" it is
2792 treated as non-personal.
2793
2794 (4) The test for "circular" in the Subject: header line has been removed
2795 because it now seems ill-conceived.
2796
279715. Minor typos in src/EDITME comments corrected.
2798
279916. Installed latest exipick from John Jetmore.
2800
280117. If headers_add on a router specified a text string that was too long for
2802 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2803 of string_sprintf() is now avoided.
2804
280518. $message_body_size was not set (it was always zero) when running the DATA
2806 ACL and the local_scan() function.
2807
280819. For the "mail" command in an Exim filter, no default was being set for
2809 the once_repeat time, causing a random time value to be used if "once" was
2810 specified. (If the value happened to be <= 0, no repeat happened.) The
2811 default is now 0s, meaning "never repeat". The "vacation" command was OK
2812 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2813 (I found it when inspecting the code).
2814
281520. There is now an overall timeout for performing a callout verification. It
2816 defaults to 4 times the callout timeout, which applies to individual SMTP
2817 commands during the callout. The overall timeout applies when there is more
2818 than one host that can be tried. The timeout is checked before trying the
2819 next host. This prevents very long delays if there are a large number of
2820 hosts and all are timing out (e.g. when the network connections are timing
2821 out). The value of the overall timeout can be changed by specifying an
2822 additional sub-option for "callout", called "maxwait". For example:
2823
2824 verify = sender/callout=5s,maxwait=20s
2825
282621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2827 to the end before writing, but this should make it even safer).
2828
282922. Exim was forgetting that it had advertised PIPELINING for the second and
2830 subsequent messages on an SMTP connection. It was also not resetting its
2831 memory on STARTTLS and an internal HELO.
2832
283323. When Exim logs an SMTP synchronization error within a session, it now
2834 records whether PIPELINING has been advertised or not.
2835
283624. Added 3 instances of "(long int)" casts to time_t variables that were being
2837 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2838 rather than long int.
2839
284025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2841
284226. Added the never_mail option to autoreply.
2843
2844
2845Exim version 4.41
2846-----------------
2847
2848 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2849 crash if the getsockname() call failed; this can happen if a connection is
2850 closed very soon after it is established. The problem was simply in the
2851 order in which certain operations were done, causing Exim to try to write
2852 to the SMTP stream before it had set up the file descriptor. The bug has
2853 been fixed by making things happen in the correct order.
2854
2855
2856Exim version 4.40
2857-----------------
2858
2859 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2860 before the connection was closed, thus losing the rejection response.
2861
2862 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2863 some early Solaris releases, but causes trouble in current releases where
2864 socklen_t is defined.
2865
2866 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2867 always exist.
2868
2869 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2870 configured.
2871
2872 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2873 that releasing the top of it at the end releases what was used for sub-
2874 expansions (unless the block got too big). However, discard this block if
2875 the first thing is a variable or header, so that we can use its block when
2876 it is dynamic (useful for very large $message_headers, for example).
2877
2878 6. Lookups now cache *every* query, not just the most recent. A new, separate
2879 store pool is used for this. It can be recovered when all lookup caches are
2880 flushed. Lookups now release memory at the end of their result strings.
2881 This has involved some general refactoring of the lookup sources.
2882
2883 7. Some code has been added to the store_xxx() functions to reduce the amount
2884 of flapping under certain conditions.
2885
2886 8. log_incoming_interface used to affect only the <= reception log lines. Now
2887 it causes the local interface and port to be added to several more SMTP log
2888 lines, for example "SMTP connection from", and rejection lines.
2889
2890 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2891
289210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2893
289411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2895 could be overwritten at the end of the current message (or the start of a
2896 new message if it was set in a HELO ACL). The value is now preserved for
2897 the duration of the SMTP connection.
2898
289912. If a transport had a headers_rewrite setting, and a matching header line
2900 contained an unqualified address, that address was qualified, even if it
2901 did not match any rewriting rules. The underlying bug was that the values
2902 of the flags that permit the existence of unqualified sender and recipient
2903 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2904 non-local messages, and by -bnq for local messages) were not being
2905 preserved with the message after it was received.
2906
290713. When Exim was logging an SMTP synchronization error, it could sometimes log
2908 "next input=" as part of the text comprising the host identity instead of
2909 the correct text. The code was using the same buffer for two different
2910 strings. However, depending on which order the printing function evaluated
2911 its arguments, the bug did not always show up. Under Linux, for example, my
2912 test suite worked just fine.
2913
291414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2915 doesn't work with some older versions of Perl. It has been changed to "my",
2916 which in any case is probably the better facility to use.
2917
291815. A really picky compiler found some instances of statements for creating
2919 error messages that either had too many or two few arguments for the format
2920 string.
2921
292216. The size of the buffer for calls to the DNS resolver has been increased
2923 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2924 for addresses that have a lot of PTR records. This alleviates a problem; it
2925 does not fully solve it.
2926
292717. A dnsdb lookup for PTR records that receives more data than will fit in the
2928 buffer now truncates the list and logs the incident, which is the same
2929 action as happens when Exim is looking up a host name and its aliases.
2930 Previously in this situation something unpredictable would happen;
2931 sometimes it was "internal error: store_reset failed".
2932
293318. If a server dropped the connection unexpectedly when an Exim client was
2934 using GnuTLS and trying to read a response, the client delivery process
2935 crashed while trying to generate an error log message.
2936
293719. If a "warn" verb in an ACL added multiple headers to a message in a single
2938 string, for example:
2939
2940 warn message = H1: something\nH2: something
2941
2942 the text was added as a single header line from Exim's point of view
2943 though it ended up OK in the delivered message. However, searching for the
2944 second and subsequent header lines using $h_h2: did not work. This has been
2945 fixed. Similarly, if a system filter added multiple headers in this way,
2946 the routers could not see them.
2947
294820. Expanded the error message when iplsearch is called with an invalid key to
2949 suggest using net-iplsearch in a host list.
2950
295121. When running tests using -bh, any delays imposed by "delay" modifiers in
2952 ACLs are no longer actually imposed (and a message to that effect is
2953 output).
2954
295522. If a "gecos" field in a passwd entry contained escaped characters, in
2956 particular, if it contained a \" sequence, Exim got it wrong when building
2957 a From: or a Sender: header from that name. A second bug also caused
2958 incorrect handling when an unquoted " was present following a character
2959 that needed quoting.
2960
296123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2962 was not being matched caselessly.
2963
296424. Arranged for all hyphens in the exim.8 source to be escaped with
2965 backslashes.
2966
296725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2968 properly. Recipient callout cache records were still being keyed to include
2969 the sender, even when use_sender was set false. This led to far more
2970 callouts that were necessary. The sender is no longer included in the key
2971 when use_sender is false.
2972
297326. Added "control = submission" modifier to ACLs.
2974
297527. Added the ${base62d: operator to decode base 62 numbers.
2976
297728. dnsdb lookups can now access SRV records.
2978
297929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2980 the configuration file.
2981
298230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2983 (-v) mode. This makes the output for a verbose queue run more intelligible.
2984
298531. Added a use_postmaster feature to recipient callouts.
2986
298732. Added the $body_zerocount variable, containing the number of binary zero
2988 bytes in the message body.
2989
299033. The time of last modification of the "new" subdirectory is now used as the
2991 "mailbox time last read" when there is a quota error for a maildir
2992 delivery.
2993
299434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2995
299635. Added +ignore_unknown as a special item in host lists.
2997
299836. Code for decoding IPv6 addresses in host lists is now included, even if
2999 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3000 address was recognized as an IP address, but was then not correctly decoded
3001 into binary, causing unexpected and incorrect effects when compared with
3002 another IP address.
3003
3004
3005Exim version 4.34
3006-----------------
3007
3008 1. Very minor rewording of debugging text in manualroute to say "list of
3009 hosts" instead of "hostlist".
3010
3011 2. If verify=header_syntax was set, and a header line with an unqualified
3012 address (no domain) and a large number of spaces between the end of the
3013 name and the colon was received, the reception process suffered a buffer
3014 overflow, and (when I tested it) crashed. This was caused by some obsolete
3015 code that should have been removed. The fix is to remove it!
3016
3017 3. When running in the test harness, delay a bit after writing a bounce
3018 message to get a bit more predictability in the log output.
3019
3020 4. Added a call to search_tidyup() just before forking a reception process. In
3021 theory, someone could use a lookup in the expansion of smtp_accept_max_
3022 per_host which, without the tidyup, could leave open a database connection.
3023
3024 5. Added the variables $recipient_data and $sender_data which get set from a
3025 lookup success in an ACL "recipients" or "senders" condition, or a router
3026 "senders" option, similar to $domain_data and $local_part_data.
3027
3028 6. Moved the writing of debug_print from before to after the "senders" test
3029 for routers.
3030
3031 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3032 problems for message scanning, either using a data ACL, or using
3033 local_scan() because the Received: header was not generated till after they
3034 were called (in order to set the time as the time of reception completion).
3035 I have revised the way this works. The header is now generated after the
3036 body is received, but before the ACL or local_scan() are called. After they
3037 are run, the timestamp in the header is updated.
3038
3039
3040Exim version 4.33
3041-----------------
3042
3043 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3044 before starting a queue runner without re-exec. This happened only when
3045 deliver_drop_privilege was set or when the Exim user was set to root. The
3046 effect of the bug was that timeouts during subsequent deliveries caused
3047 crashes instead of being properly handled. The handler is now left at its
3048 default (and expected) setting.
3049
3050 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3051 message, again when deliver_drop_privilege is set or Exim is run as root.
3052 The bug described in (1) was not present in this case, but the tidying up
3053 of the other signals was missing. I have made the two cases consistent.
3054
3055 3. The ignore_target_hosts setting on a manualroute router was being ignored
3056 for hosts that were looked up using the /MX notation.
3057
3058 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3059 in domain lists.
3060
3061 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3062 operated on the sender address. After changing the $sender_address to <>
3063 for the sender address verify, Exim was re-instated it as the original
3064 (before rewriting) address, but remembering that it had rewritten it, so it
3065 wasn't rewriting it again. This bug also had the effect of breaking the
3066 sender address verification caching when the sender address was rewritten.
3067
3068 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3069 This has been changed so that if the ip literal address matches
3070 ignore_target_hosts, the router declines.
3071
3072 7. Added expansion conditions match_domain, match_address, and match_local_
3073 part (NOT match_host).
3074
3075 8. The placeholder for the Received: header didn't have a length field set.
3076
3077 9. Added code to Exim itself and to exim_lock to test for a specific race
3078 condition that could lead to file corruption when using MBX delivery. The
3079 issue is with the lockfile that is created in /tmp. If this file is removed
3080 after a process has opened it but before that process has acquired a lock,
3081 there is the potential for a second process to recreate the file and also
3082 acquire a lock. This could lead to two Exim processes writing to the file
3083 at the same time. The added code performs the same test as UW imapd; it
3084 checks after acquiring the lock that its file descriptor still refers to
3085 the same named file.
3086
308710. The buffer for building added header lines was of fixed size, 8192 bytes.
3088 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3089 when Exim is built.
3090
309111. Added the smtp_active_hostname option. If used, this will typically be made
3092 to depend on the incoming interface address. Because $interface_address is
3093 not set up until the daemon has forked a reception process, error responses
3094 that can happen earlier (such as "too many connections") no longer contain
3095 a host name.
3096
309712. If an expansion in a condition on a "warn" statement fails because a lookup
3098 defers, the "warn" statement is abandoned, and the next ACL statement is
3099 processed. Previously this caused the whole ACL to be aborted.
3100
310113. Added the iplsearch lookup type.
3102
310314. Added ident_timeout as a log selector.
3104
310515. Added tls_certificate_verified as a log selector.
3106
310716. Added a global option tls_require_ciphers (compare the smtp transport
3108 option of the same name). This controls incoming TLS connections.
3109
311017. I finally figured out how to make tls_require_ciphers do a similar thing
3111 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3112 before starting the TLS session.
3113
311418. Tabs are now shown as \t in -bP output.
3115
311619. If the log selector return_path_on_delivery was set, Exim crashed when
3117 bouncing a message because it had too many Received: header lines.
3118
311920. If two routers both had headers_remove settings, and the first one included
3120 a superfluous trailing colon, the final name in the first list and the
3121 first name in the second list were incorrectly joined into one item (with a
3122 colon in the middle).
3123
3124
3125Exim version 4.32
3126-----------------
3127
3128 1. Added -C and -D options to the exinext utility, mainly to make it easier
3129 to include in the automated testing, but these could be helpful when
3130 multiple configurations are in use.
3131
3132 2. The exinext utility was not formatting the output nicely when there was
3133 an alternate port involved in the retry record key, nor when there was a
3134 message id as well (for retries that were specific to a specific message
3135 and a specific host). It was also confused by IPv6 addresses, because of
3136 the additional colons they contain. I have fixed the IPv4 problem, and
3137 patched it up to do a reasonable job for IPv6.
3138
3139 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3140 delivery, the log line now contains "pipelined" if PIPELINING was used.
3141
3142 4. An SMTP transport process used to panic and die if the bind() call to set
3143 an explicit outgoing interface failed. This has been changed; it is now
3144 treated in the same way as a connect() failure.
3145
3146 5. A reference to $sender_host_name in the part of a conditional expansion
3147 that was being skipped was still causing a DNS lookup. This no longer
3148 occurs.
3149
3150 6. The def: expansion condition was not recognizing references to header lines
3151 that used bh_ and bheader_.
3152
3153 7. Added the _cache feature to named lists.
3154
3155 8. The code for checking quota_filecount in the appendfile transport was
3156 allowing one more file than it should have been.
3157
3158 9. For compatibility with Sendmail, the command line option
3159
3160 -prval:sval
3161
3162 is equivalent to
3163
3164 -oMr rval -oMs sval
3165
3166 and sets the incoming protocol and host name (for trusted callers). The
3167 host name and its colon can be omitted when only the protocol is to be set.
3168 Note the Exim already has two private options, -pd and -ps, that refer to
3169 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3170 "s", but I don't think that's a major issue.
3171
317210. A number of refactoring changes to the code, none of which should affect
3173 Exim's behaviour:
3174
3175 (a) The number of logging options was getting close to filling up the
3176 32-bit word that was used as a bit map. I have split them into two classes:
3177 those that are passed in the argument to log_write(), and those that are
3178 only ever tested independently outside of that function. These are now in
3179 separate 32-bit words, so there is plenty of room for expansion again.
3180 There is no change in the user interface or the logging behaviour.
3181
3182 (b) When building, for example, log lines, the code previously used a
3183 macro that called string_cat() twice, in order to add two strings. This is
3184 not really sufficiently general. Furthermore, there was one instance where
3185 it was actually wrong because one of the argument was used twice, and in
3186 one call a function was used. (As it happened, calling the function twice
3187 did not affect the overall behaviour.) The macro has been replaced by a
3188 function that can join an arbitrary number of extra strings onto a growing
3189 string.
3190
3191 (c) The code for expansion conditions now uses a table and a binary chop
3192 instead of a serial search (which was left over from when there were very
3193 few conditions). Also, it now recognizes conditions like "pam" even when
3194 the relevant support is not compiled in: a suitably worded error message is
3195 given if an attempt is made to use such a condition.
3196
319711. Added ${time_interval:xxxxx}.
3198
319912. A bug was causing one of the ddress fields not to be passed back correctly
3200 from remote delivery subprocesses. The field in question was not being
3201 subsequently used, so this caused to problems in practice.
3202
320313. Added new log selectors queue_time and deliver_time.
3204
320514. Might have fixed a bug in maildirsizefile handling that threw up
3206 "unexpected character" debug warnings, and recalculated the data
3207 unnecessarily. In any case, I expanded the warning message to give more
3208 information.
3209
321015. Added the message "Restricted characters in address" to the statements in
3211 the default ACL that block characters like @ and % in local parts.
3212
321316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3214 Three changes have been made:
3215
3216 (a) There was a serious bug; a negative response to MAIL caused the whole
3217 recipient domain to be cached as invalid, thereby blocking all messages
3218 to all local parts at the same domain, from all senders. This bug has
3219 been fixed. The domain is no longer cached after a negative response to
3220 MAIL if the sender used is not empty.
3221
3222 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3223 been restored.
3224
3225 (c) A new callout option, "use_sender" has been added for people who want
3226 the modified behaviour.
3227
3228
3229Exim version 4.31
3230-----------------
3231
3232 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3233 Larry Rosenman.
3234
3235 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3236 indeed breaks things for older releases.
3237
3238 3. Added additional logging to the case where there is a problem reading data
3239 from a filter that is running in a subprocess using a pipe, in order to
3240 try to track down a specific problem.
3241
3242 4. Testing facility fudge: when running in the test harness and attempting
3243 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3244 getting "No route to host". Convert this to a timeout.
3245
3246 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3247 warning.
3248
3249 6. Some OS don't have socklen_t but use size_t instead. This affects the
3250 fifth argument of getsockopt() amongst other things. This is now
3251 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3252 can be set for individual OS. I have set it for SunOS5, OSF1, and
3253 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3254 some earlier ones do not.
3255
3256 7. Change 4.30/15 was not doing the test caselessly.
3257
3258 8. The standard form for an IPv6 address literal was being rejected by address
3259 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3260 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3261 this, as well as the form without the "IPv6" on the front (but only when
3262 address literals are enabled, of course).
3263
3264 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3265
326610. Exim crashed if a message with an empty sender address specified by -f
3267 encountered a router with an errors_to setting. This could be provoked only
3268 by a command such as
3269
3270 exim -f "" ...
3271
3272 where an empty string was supplied; "<>" did not hit this bug.
3273
327411. Installed PCRE release 4.5.
3275
327612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3277 remained set. It is now erased.
3278
327913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3280 times from message ids (which are base 36 rather than the normal 62).
3281
328214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3283 were being counted as actual protocol errors, and logged if the log
3284 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3285 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3286 and DATA following a set of rejected RCPTs do not count as protocol errors.
3287 In other words, Exim assumes they were pipelined, though this may not
3288 actually be the case. Of course, in all cases the client gets an
3289 appropriate error code.
3290
329115. If a lookup fails in an ACL condition, a message about the failure may
3292 be available; it is used if testing the ACL cannot continue, because most
3293 such messages specify what the cause of the deferral is. However, some
3294 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3295 that caused an old message to be retained and used if a later statement
3296 caused a defer, replacing the real cause of the deferral.
3297
329816. If an IP address had so many PTR records that the DNS lookup buffer
3299 was not large enough to hold them, Exim could crash while trying to process
3300 the truncated data. It now detects and logs this case.
3301
330217. Further to 4.21/58, another change has been made: if (and only if) the
3303 first line of a message (the first header line) ends with CRLF, a bare LF
3304 in a subsequent header line has a space inserted after it, so as not to
3305 terminate the header.
3306
330718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3308 unnecessarily, used atoi() instead of strtol(), and didn't check the
3309 termination when getting file sizes from file names by regex.
3310
331119. Completely re-implemented the support for maildirsize files, in the light
3312 of a number of problems with the previous contributed implementation
3313 (4.30/29). In particular:
3314
3315 . If the quota is zero, the maildirsize file is maintained, but no quota is
3316 imposed.
3317
3318 . If the maildir directory does not exist, it is created before any attempt
3319 to write a maildirsize file.
3320
3321 . The quota value in the file is just a cache; if the quota is changed in
3322 the transport, the new value overrides.
3323
3324 . A regular expression is available for excluding directories from the
3325 count.
3326
332720. The autoreply transport checks the characters in options that define the
3328 message's headers; it allows continued headers, but it was checking with
3329 isspace() after an embedded newline instead of explicitly looking for a
3330 space or a tab.
3331
333221. If all the "regular" hosts to which an address was routed had passed their
3333 expiry times, and had not reached their retry times, the address was
3334 bounced, even if fallback hosts were defined. Now Exim should go on to try
3335 the fallback hosts.
3336
333722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3338 equivalent code in the SMTP transport. Some hosts send humungous responses
3339 to HELO/EHLO, more than 1024 it seems.
3340
334123. Refactoring: code in filter.c used (void *) for "any old type" but this
3342 gives compiler warnings in some environments. I've now done it "properly",
3343 using a union.
3344
334524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3346 (because of problems with the built-in one) was declared to return uschar *
3347 instead of char *, causing compiler failure.
3348
334925. Fixed a file descriptor leak when processing alias/forward files.
3350
335126. Fixed a minor format string issue in dbfn.c.
3352
335327. Typo in exim.c: ("dmbnz" for "dbmnz").
3354
335528. If a filter file refered to $h_xxx or $message_headers, and the headers
3356 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3357 become corrupted.
3358
335929. When a sender address is verified, it is cached, to save repeating the test
3360 when there is more than one recipient in a message. However, when the
3361 verification involves a callout, it is possible for different callout
3362 options to be set for different recipients. It is too complicated to keep
3363 track of this in the cache, so now Exim always runs a verification when a
3364 callout is required, relying on the callout cache for the optimization.
3365 The overhead is duplication of the address routing, but this should not be
3366 too great.
3367
336830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3369 to be verified with callout=postmaster, and the main callout worked but the
3370 postmaster check failed, the verification correctly failed. However, if a
3371 subsequent RCPT command asked for sender verification *without* the
3372 postmaster check, incorrect caching caused this verification also to fail,
3373 incorrectly.
3374
337531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3376 it was not caching the DNS options (qualify_single, search_parents) that
3377 were used when the lookup failed. A subsequent lookup with different
3378 options therefore always gave the same answer, though there were cases
3379 where it should not have. (Example: a "domains = !$mx_any" option on a
3380 dnslookup router: the "domains" option is always processed without any
3381 widening, but the router might have qualify_single set.) Now Exim uses the
3382 cached value only when the same options are set.
3383
338432. Added John Jetmore's "exipick" utility to the distribution.
3385
338633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3387 than a timeout (e.g. a certificate is required, and is not provided), an
3388 Exim server now closes the connection immediately. Previously it waited for
3389 the client to close - but if the client is SSL, it seems that they each
3390 wait for each other, leading to a delay before one of them times out.
3391
339234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3393 maintained 0.8.x compatibility because I don't think many are using it, and
3394 it is clearly obsolete.
3395
339635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3397 transport.
3398
339936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3400 client certificate was expired. A simple patch fixes this, though I don't
3401 understand the full logic of why the verify callback is called multiple
3402 times.
3403
340437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3405 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3406 which causes problems with some clients (such as the Certicom SSL Plus
3407 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3408 disables the coutermeasure allowing Eudora to connect."
3409
341038. Exim was not checking that a write() to a log file succeeded. This could
3411 lead to Bad Things if a log got too big, in particular if it hit a file
3412 size limit. Exim now panics and dies if it cannot write to a log file, just
3413 as it does if it cannot open a log file.
3414
341539. Modified OS/Makefile-Linux so that it now contains
3416
3417 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3418
3419 The two -D definitions ensure that Exim is compiled with large file
3420 support, which makes it possible to handle log files that are bigger than
3421 2^31.
3422
342340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3424 instance) a domain was checked against a named list that involved a lookup,
3425 causing $domain_data to be set, then another domain was checked against the
3426 same list, then the first domain was re-checked, the value of $domain_data
3427 after the final check could be wrong. In particular, if the second check
3428 failed, it could be set empty. This bug probably also applied to
3429 $localpart_data.
3430
343141. The strip_trailing_dot option was not being applied to the address given
3432 with the -f command-line option.
3433
343442. The code for reading a message's header from the spool was incrementing
3435 $received_count, but never initializing it. This meant that the value was
3436 incorrect (doubled) while delivering a message in the same process in which
3437 it was received. In the most common configuration of Exim, this never
3438 happens - a fresh exec is done - but it can happen when
3439 deliver_drop_privilege is set.
3440
344143. When Exim logs an SMTP synchronization error - client data sent too soon -
3442 it now includes up to 150 characters of the unexpected data in the log
3443 line.
3444
344544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3446 and building data strings. The size of both of these buffers was 10 000
3447 bytes - far larger than anybody would *ever* want, thought I. Needless to
3448 say, somebody hit the limit. I have increased the maximum line length to
3449 20 000 and the maximum data length of concatenated lines to 100 000. I have
3450 also fixed two bugs, because there was no checking on these buffers. Tsk,
3451 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3452 buffer is too small.
3453
345445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3455 lsearch lookups. Now it does.
3456
345746. When parsing a route_list item in a manualroute router, a fixed-length
3458 buffer was used for the list of hosts. I made this 1024 bytes long,
3459 thinking that nobody would ever have a list of hosts that long. Wrong.
3460 Somebody had a whole pile of complicated expansion conditions, and the
3461 string was silently truncated, leading to an expansion error. It turns out
3462 that it is easier to change to an unlimited length (owing to other changes
3463 that have happened since this code was originally written) than to build
3464 structure for giving a limitation error. The length of the item that
3465 expands into the list of hosts is now unlimited.
3466
346747. The lsearch lookup could not handle data where the length of text line was
3468 more than 4095 characters. Such lines were truncated, leading to shortened
3469 data being returned. It should now handle lines of any length.
3470
347148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3472 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3473 ACL").
3474
347549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3476 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3477 no longer happens in comment lines. A list of replacements is now placed
3478 at the head of all of the source files, except those whose only change is
3479 to replace PERL_COMMAND in the very first #! line.
3480
348150. Replaced the slow insertion sort in queue.c, for sorting the list of
3482 messages on the queue, with a bottom-up merge sort, using code contributed
3483 by Michael Haardt. This should make operations like -bp somewhat faster on
3484 large queues. It won't affect queue runners, except when queue_run_in_order
3485 is set.
3486
348751. Installed eximstats 1.31 in the distribution.
3488
348952. Added support for SRV lookups to the dnslookup router.
3490
349153. If an ACL referred to $message_body or $message_body_end, the value was not
3492 reset for any messages that followed in the same SMTP session.
3493
349454. The store-handling optimization for building very long strings was not
3495 differentiating between the different store pools. I don't think this
3496 actually made any difference in practice, but I've tidied it.
3497
349855. While running the routers to verify a sender address, $sender_address
3499 was still set to the sender address. This is wrong, because when routing to
3500 send a bounce to the sender, it would be empty. Therefore, I have changed
3501 it so that, while verifying a sender address, $sender_address is set to <>.
3502 (There is no change to what happens when verifying a recipient address.)
3503
350456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3505 target A or AAAA records (if not already returned) without resetting the
3506 qualify_single or search_parents options of the DNS resolver. These are
3507 inappropriate in this case because the targets of MX and SRV records must
3508 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3509 target that, when qualified, matched something in the local domain. These
3510 two options are now turned off when doing these lookups.
3511
351257. It seems that at least some releases of Reiserfs (which does not have the
3513 concept of a fixed number of inodes) returns zero and not -1 for the
3514 number of available inodes. This interacted badly with check_spool_inodes,
3515 which assumed that -1 was the "no such thing" setting. What I have done is
3516 to check that the total number of inodes is greater than zero before doing
3517 the test of how many are available.
3518
351958. When a "warn" ACL statement has a log_message modifier, the message is
3520 remembered, and not repeated. This is to avoid a lot of repetition when a
3521 message has many recipients that cause the same warning to be written.
3522 Howewer, Exim was preserving the list of already written lines for an
3523 entire SMTP session, which doesn't seem right. The memory is now reset if a
3524 new message is started.
3525
352659. The "rewrite" debugging flag was not showing the result of rewriting in the
3527 debugging output unless log_rewrite was also set.
3528
352960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3530 of (int)(handle) when we know that handle contains (void *)(-1).
3531
353261. The Exim daemon panic-logs an error return when it closes the incoming
3533 connection. However "connection reset by peer" seems to be common, and
3534 isn't really an error worthy of noting specially, so that particular error
3535 is no long logged.
3536
353762. When Exim is trying to find all the local interfaces, it used to panic and
3538 die if the ioctl to get the interface flags failed. However, it seems that
3539 on at least one OS (Solaris 9) it is possible to have an interface that is
3540 included in the list of interfaces, but for which you get a failure error
3541 for this call. This happens when the interface is not "plumbed" into a
3542 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3543 failure of the "get flags" call assumes that the interface is down.
3544
354563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3546 makes life easier for people who are doing arithmetic on fields extracted
3547 from dates, where you often get leading zeros that should not be
3548 interpreted as octal.
3549
355064. Added qualify_domain to the redirect router, to override the global
3551 setting.
3552
355365. If a pathologically long header line contained very many addresses (the
3554 report of this problem mentioned 10 000) and each of them was rewritten,
3555 Exim could use up a very large amount of memory. (It kept on making new
3556 copies of the header line as it rewrote, and never released the old ones.)
3557 At the expense of a bit more processing, the header rewriting function has
3558 been changed so that it no longer eats memory in this way.
3559
356066. The generation of the Received: header has been moved from the time that a
3561 message starts to be received, to the time that it finishes. The timestamp
3562 in the Received: header should now be very close to that of the <= log
3563 line. There are two side-effects of this change:
3564
3565 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3566 logged header lines no longer include the local Received: line, because
3567 it has not yet been created. The same applies to a copy of the message
3568 that is returned to a non-SMTP sender when a message is rejected.
3569
3570 (b) When a filter file is tested using -bf, no additional Received: header
3571 is added to the test message. After some thought, I decided that this
3572 is a bug fix.
3573
3574 This change does not affect the value of $received_for. It is still set
3575 after address rewriting, but before local_scan() is called.
3576
357767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3578
357968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3580 gave an unhelpful panic error message, and a defer error. I have managed to
3581 change this behaviour so that it now rejects any supplied certificate,
3582 which seems right, as the list of acceptable certificates is empty.
3583
358469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3585 gave an unhelpful defer error. I have not managed to make this reject any
3586 supplied certificates, but the error message it gives is "no certificate
3587 supplied", which is not helpful.
3588
358970. exigrep's output now also includes lines that are not associated with any
3590 message, but which match the given pattern. Implemented by a patch from
3591 Martin Sluka, which also tidied up the Perl a bit.