Flush SMTP output buffer before "delay" in an ACL; add control =
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
047bdd8c 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.468 2007/02/05 12:35:46 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
PH
29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
PH
32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b01dd148
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
9c57cbc0
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
b4ed4da0 76
5dd1517f
PH
77Exim version 4.66
78-----------------
79
80PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
81 fixed by 4.65/MH/01 (is this a record?) are fixed:
82
83 (i) An empty string was always treated as zero by the numeric comparison
84 operators. This behaviour has been restored.
85
86 (ii) It is documented that the numeric comparison operators always treat
87 their arguments as decimal numbers. This was broken in that numbers
88 starting with 0 were being interpreted as octal.
89
90 While fixing these problems I realized that there was another issue that
91 hadn't been noticed. Values of message_size_limit (both the global option
92 and the transport option) were treated as octal if they started with 0.
93 The documentation was vague. These values are now always treated as
94 decimal, and I will make that clear in the documentation.
95
96
93cfa765
TK
97Exim version 4.65
98-----------------
99
100TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
101 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
102 versions. (#438)
103
d6066548
MH
104MH/01 Don't check that the operands of numeric comparison operators are
105 integers when their expansion is in "skipping" mode (fixes bug
106 introduced by 4.64-PH/07).
107
4362ff0d
PH
108PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
109 child addresses, Exim now panics and dies. Previously, because the count
110 is held in a short int, deliveries were likely to be lost. As such a
111 large number of recipients for a single message is ridiculous
112 (performance will be very, very poor), I have chosen to impose a limit
113 rather than extend the field.
114
93cfa765 115
944e9e9c
TF
116Exim version 4.64
117-----------------
aa41d2de 118
21d74bd9
TK
119TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
120 leftover -K file (the existence of which was triggered by #402).
121 While we were at it, introduced process PID as part of the -K
122 filename. This should rule out race conditions when creating
123 these files.
124
125TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
126 processing considerably. Previous code took too long for large mails,
127 triggering a timeout which in turn triggers #401.
128
129TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
130 in the DK code in transports.c. sendfile() is not really portable,
131 hence the _LINUX specificness.
944e9e9c
TF
132
133TF/01 In the add_headers option to the mail command in an Exim filter,
134 there was a bug that Exim would claim a syntax error in any
135 header after the first one which had an odd number of characters
136 in the field name.
137
2b1c6e3a
PH
138PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
139 callout verification, Exim cached a "reject" for the entire domain. This
140 is correct for most verifications, but it is not correct for a recipient
141 verification with use_sender or use_postmaster set, because in that case
142 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
143 case of MAIL FROM:<> rejection from other early rejections (e.g.
144 rejection of HELO). When verifying a recipient using a non-null MAIL
145 address, the cache is ignored if it shows MAIL FROM:<> rejection.
146 Whatever the result of the callout, the value of the domain cache is
147 left unchanged (for any other kind of callout, getting as far as trying
148 RCPT means that the domain itself is ok).
149
1f872c80
PH
150PH/02 Tidied a number of unused variable and signed/unsigned warnings that
151 gcc 4.1.1 threw up.
152
153PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
154 manifest itself as EPIPE rather than ECONNECT. When tidying away a
155 session, the daemon ignores ECONNECT errors and logs others; it now
156 ignores EPIPE as well.
157
d203e649
PH
158PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
159 (quoted-printable decoding).
160
cc2ed8f7 161PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 162 later the small subsequent patch to fix an introduced bug.
f951fd57 163
ddfcd446
PH
164PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
165
d45b1de8
PH
166PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
167
168PH/08 An error is now given if message_size_limit is specified negative.
169
38a0a95f 170PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 171 to be given (somewhat) arbitrary names.
38a0a95f 172
a2405d83
JJ
173JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
174 in 4.64-PH/09.
175
176JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
177 miscellaneous code fixes
178
6ea85e9a
PH
179PH/10 Added the log_reject_target ACL modifier to specify where to log
180 rejections.
181
26da7e20
PH
182PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
183 hostname. This is wrong, because it relates to the incoming message (and
184 probably the interface on which it is arriving) and not to the outgoing
185 callout (which could be using a different interface). This has been
186 changed to use the value of the helo_data option from the smtp transport
187 instead - this is what is used when a message is actually being sent. If
188 there is no remote transport (possible with a router that sets up host
189 addresses), $smtp_active_hostname is used.
6ea85e9a 190
14aa5a05 191PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 192 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
193 (a) The code assumed that strncpy() returns a negative number on buffer
194 overflow, which isn't the case. Replaced with Exim's string_format()
195 function.
196 (b) There were several signed/unsigned issues. I just did the minimum
197 hacking in of casts. There is scope for a larger refactoring.
198 (c) The code used strcasecmp() which is not a standard C function.
199 Replaced with Exim's strcmpic() function.
200 (d) The code set only $1; it now sets $auth1 as well.
201 (e) A simple test gave the error "authentication client didn't specify
202 service in request". It would seem that Dovecot has changed its
203 interface. Fortunately there's a specification; I followed it and
204 changed what the client sends and it appears to be working now.
205
ff75a1f7
PH
206PH/13 Added $message_headers_raw to provide the headers without RFC 2047
207 decoding.
208
e6f6568e
PH
209PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
210 address A is aliased to B and C, where B exists and C does not. Without
211 -v the output is "A verified" because verification stops after a
212 successful redirection if more than one address is generated. However,
213 with -v the child addresses are also verified. Exim was outputting "A
214 failed to verify" and then showing the successful verification for C,
215 with its parentage. It now outputs "B failed to verify", showing B's
216 parentage before showing the successful verification of C.
217
d6f6e0dc
PH
218PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
219 look up a TXT record in a specific list after matching in a combined
220 list.
221
322050c2
PH
222PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
223 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
224 they consult the DNS. I had assumed they would set it the way they
225 wanted; and indeed my experiments on Linux seem to show that in some
226 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
227 To be on the safe side, however, I have now made the interface to
228 host_find_byname() similar to host_find_bydns(), with an argument
229 containing the DNS resolver options. The host_find_byname() function now
230 sets these options at its start, just as host_find_bydns() does. The smtp
231 transport options dns_qualify_single and dns_search_parents are passed to
232 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
233 of host_find_byname() use the default settings of RES_DEFNAMES
234 (qualify_single) but not RES_DNSRCH (search_parents).
235
08955dd3
PH
236PH/17 Applied (a modified version of) Nico Erfurth's patch to make
237 spool_read_header() do less string testing, by means of a preliminary
238 switch on the second character of optional "-foo" lines. (This is
239 overdue, caused by the large number of possibilities that now exist.
240 Originally there were few.) While I was there, I also converted the
241 str(n)cmp tests so they don't re-test the leading "-" and the first
242 character, in the hope this might squeeze out yet more improvement.
243
1eccaa59
PH
244PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
245 flag allowing group syntax was set by the header_syntax check but not
246 turned off, possible causing trouble later; (2) The flag was not being
247 set at all for the header_verify test, causing "group"-style headers to
248 be rejected. I have now set it in this case, and also caused header_
249 verify to ignore an empty address taken from a group. While doing this, I
250 came across some other cases where the code for allowing group syntax
251 while scanning a header line wasn't quite right (mostly, not resetting
252 the flag correctly in the right place). These bugs could have caused
253 trouble for malformed header lines. I hope it is now all correct.
254
602e59e5
PH
255PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
256 with the "reply" argument non-NULL. The code, however (which originally
257 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
258 but it didn't always do it. This confused somebody who was copying the
259 code for some other use. I have removed all the tests.
260
411ef850
PH
261PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
262 feature that was used to support insecure browsers during the U.S. crypto
263 embargo. It requires special client support, and Exim is probably the
264 only MTA that supported it -- and would never use it because real RSA is
265 always available. This code has been removed, because it had the bad
266 effect of slowing Exim down by computing (never used) parameters for the
267 RSA_EXPORT functionality.
268
7befa435
PH
269PH/21 On the advice of Timo Sirainen, added a check to the dovecot
270 authenticator to fail if there's a tab character in the incoming data
271 (there should never be unless someone is messing about, as it's supposed
272 to be base64-encoded). Also added, on Timo's advice, the "secured" option
273 if the connection is using TLS or if the remote IP is the same as the
274 local IP, and the "valid-client-cert option" if a client certificate has
275 been verified.
276
48da4259 277PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
278 authenticators. This can be used for authorization after authentication
279 succeeds. (In the case of plaintext, it servers for both authentication
280 and authorization.)
281
48da4259
PH
282PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
283 if any retry times were supplied.
284
d1d5595c
PH
285PH/24 Exim crashed if verify=helo was activated during an incoming -bs
286 connection, where there is no client IP address to check. In this
287 situation, the verify now always succeeds.
288
0ef732d9
PH
289PH/25 Applied John Jetmore's -Mset patch.
290
328895cc
PH
291PH/26 Added -bem to be like -Mset, but loading a message from a file.
292
fd700877
PH
293PH/27 In a string expansion for a processed (not raw) header when multiple
294 headers of the same name were present, leading whitespace was being
295 removed from all of them, but trailing whitespace was being removed only
296 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
297 before concatenation. Completely empty headers in a concatenation (as
298 before) are ignored.
fd700877 299
8dce1a6f
PH
300PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
301 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
302
17af4a17
PH
303PH/29 [Removed. This was a change that I later backed out, and forgot to
304 correct the ChangeLog entry (that I had efficiently created) before
305 committing the later change.]
f6c332bd
PH
306
307PH/30 Exim was sometimes attempting to deliver messages that had suffered
308 address errors (4xx response to RCPT) over the same connection as other
309 messages routed to the same hosts. Such deliveries are always "forced",
310 so retry times are not inspected. This resulted in far too many retries
311 for the affected addresses. The effect occurred only when there were more
312 hosts than the hosts_max_try setting in the smtp transport when it had
313 the 4xx errors. Those hosts that it had tried were not added to the list
314 of hosts for which the message was waiting, so if all were tried, there
315 was no problem. Two fixes have been applied:
316
317 (i) If there are any address or message errors in an SMTP delivery, none
318 of the hosts (tried or untried) are now added to the list of hosts
319 for which the message is waiting, so the message should not be a
320 candidate for sending over the same connection that was used for a
321 successful delivery of some other message. This seems entirely
322 reasonable: after all the message is NOT "waiting for some host".
323 This is so "obvious" that I'm not sure why it wasn't done
324 previously. Hope I haven't missed anything, but it can't do any
325 harm, as the worst effect is to miss an optimization.
326
327 (ii) If, despite (i), such a delivery is accidentally attempted, the
328 routing retry time is respected, so at least it doesn't keep
329 hammering the server.
330
c1114884
PH
331PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
332 in ${readsocket because some servers need this prod.
333
7a0743eb
PH
334PH/32 Added some extra debug output when updating a wait-xxx database.
335
0d85fa3f
PH
336PH/33 The hint "could be header name not terminated by colon", which has been
337 given for certain expansion errors for a long time, was not being given
338 for the ${if def:h_colon_omitted{... case.
339
1bf43b78
PH
340PH/34 The spec says: "With one important exception, whenever a domain list is
341 being scanned, $domain contains the subject domain." There was at least
342 one case where this was not true.
343
520de300
PH
344PH/35 The error "getsockname() failed: connection reset by peer" was being
345 written to the panic log as well as the main log, but it isn't really
346 panic-worthy as it just means the connection died rather early on. I have
347 removed the panic log writing for the ECONNRESET error when getsockname()
348 fails.
349
48c7f9e2
PH
350PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
351 runs only) independently of the message's sender address. This meant
352 that, if the 4xx error was in fact related to the sender, a different
353 message to the same recipient with a different sender could confuse
354 things. In particualar, this can happen when sending to a greylisting
355 server, but other circumstances could also provoke similar problems.
356 I have changed the default so that the retry time for these errors is now
357 based a combination of the sender and recipient addresses. This change
358 can be overridden by setting address_retry_include_sender=false in the
359 smtp transport.
360
99ea1c86
PH
361PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
362 remote server are returned as part of bounce messages. This was not
363 happening for LMTP over a pipe (the lmtp transport), but now it is the
364 same for both kinds of LMTP.
365
a2042e78
PH
366PH/38 Despite being documented as not happening, Exim was rewriting addresses
367 in header lines that were in fact CNAMEs. This is no longer the case.
368
4fbcfc2e
PH
369PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
370 and queue runs started by the daemon processed all messages. This has
371 been fixed so that -R and -S can now usefully be given with -q<time>.
372
aa41d2de
PH
373PH/40 Import PCRE release 6.7 (fixes some bugs).
374
af561417
PH
375PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
376
3cc66b45
PH
377PH/42 Give an error if -q is specified more than once.
378
194cc0e4
PH
379PH/43 Renamed the variables $interface_address and $interface_port as
380 $received_ip_address and $received_port, to make it clear that these
381 values apply to message reception, and not to the outgoing interface when
382 a message is delivered. (The old names remain recognized, of course.)
383
a401ddaa
PH
384PH/44 There was no timeout on the connect() call when using a Unix domain
385 socket in the ${readsocket expansion. There now is.
386
4e88a19f
PH
387PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
388 be meaningful with "accept".
389
d7d7b289
SC
390SC/01 Eximstats V1.43
391 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
392
393SC/02 Eximstats V1.44
394 Use a glob alias rather than an array ref in the generated
395 parser. This improves both readability and performance.
396
397SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
398 Collect SpamAssassin and rejection statistics.
399 Don't display local sender or destination tables unless
400 there is data to show.
401 Added average volumes into the top table text output.
402
403SC/04 Eximstats V1.46
404 Collect data on the number of addresses (recipients)
405 as well as the number of messages.
406
407SC/05 Eximstats V1.47
408 Added 'Message too big' to the list of mail rejection
409 reasons (thanks to Marco Gaiarin).
410
411SC/06 Eximstats V1.48
412 Mainlog lines which have GMT offsets and are too short to
413 have a flag are now skipped.
414
415SC/07 Eximstats V1.49 (Alain Williams)
416 Added the -emptyok flag.
417
418SC/08 Eximstats V1.50
419 Fixes for obtaining the IP address from reject messages.
420
0ea2a468
JJ
421JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
422 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
423 whitesspace changes from 4.64-PH/27
424
425JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
426 match 4.64-PH/13
427
428JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
429 are found, allow negative numbers in numeric criteria)
430
431JJ/06 exipick.20061117.2, added new $message_body_missing variable
432
433JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
434 to match changes made in 4.64-PH/43
435
8a10f5a4
PH
436PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
437
30e18802
PH
438PH/47 Put in an explicit test for a DNS lookup of an address record where the
439 "domain" is actually an IP address, and force a failure. This locks out
440 those revolvers/nameservers that support "A-for-A" lookups, in
441 contravention of the specifications.
442
55728a4f
PH
443PH/48 When a host name was looked up from an IP address, and the subsequent
444 forward lookup of the name timed out, the host name was left in
445 $sender_host_name, contrary to the specification.
d7d7b289 446
d7837193
PH
447PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
448 restricted to single-key lookups, Exim was not diagnosing an error if
449 * or *@ was used with a query-style lookup.
450
87054a31
PH
451PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
452
ea2c01d2
MH
453MH/01 local_scan ABI version incremented to 1.1. It should have been updated
454 long ago, but noone interested enough thought of it. Let's just say that
455 the "1.1" means that there are some new functions that weren't there at
456 some point in the past.
457
e4fa6968
PH
458PH/51 Error processing for expansion failure of helo_data from an smtp
459 transport during callout processing was broken.
460
56f5d9bd
PH
461PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
462 tested/used via the -bh/-bhc/-bs options.
463
922e1c28
PH
464PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
465 bug, fixed in subsequent PCRE releases).
466
21eb6e72
PH
467PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
468 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
469
a0540757
PH
470PH/55 Check for a ridiculously long file name in exim_dbmbuild.
471
944e9e9c 472
478be7b0
SC
473Exim version 4.63
474-----------------
475
476SC/01 Use a glob alias rather than an array ref in eximstats generated
477 parser. This improves both readability and performance.
478
479SC/02 Collect SpamAssassin and rejection statistics in eximstats.
480 Don't display local sender or destination tables in eximstats unless
481 there is data to show.
482 Added average volumes into the eximstats top table text output.
483
484SC/03 Collect data on the number of addresses (recipients) as well
485 as the number of messages in eximstats.
486
2b965a65
TF
487TF/01 Correct an error in the documentation for the redirect router. Exim
488 does (usually) call initgroups() when daemonizing.
478be7b0 489
45b91596
PH
490TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
491 with consistent privilege compared to when running as a daemon.
478be7b0 492
c59f5781
TF
493TF/03 Note in the spec that $authenticated_id is not set for local
494 submissions from trusted users.
495
90fc3069
TF
496TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
497 Thanks to Dean Brooks <dean@iglou.com> for the patch.
498
6083aca0
TF
499TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
500 by adding some example configuration directives to the default
501 configuration file. A little bit of work is required to uncomment the
502 directives and define how usernames and passwords are checked, but
503 there is now a framework to start from.
504
765b530f
PH
505PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
506 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
507 without this. I don't know how relevant this is to other LDAP libraries.
508
4e167a8c
PH
509PH/02 Add the verb name to the "unknown ACL verb" error.
510
4608d683
PH
511PH/03 Magnus Holmgren's patch for filter_prepend_home.
512
b8dc3e4a
PH
513PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
514
5418e93b
PH
515PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
516 directory not expanded when it should be if an expanded home directory
517 was set for the address (which is overridden by the transport).
518
b4a9bda2
PH
519PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
520 libradius.
521
45b91596
PH
522PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
523 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
524 because it is too late at that time, and has no effect.
525
5547e2c5
PH
526PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
527 security issue with \' (bugzilla #107). I could not use the
528 PQescapeStringConn() function, because it needs a PGconn value as one of
529 its arguments.
530
dbcef0ea
PH
531PH/08 When testing addresses using -bt, indicate those final addresses that
532 are duplicates that would not cause an additional delivery. At least one
533 person was confused, thinking that -bt output corresponded to deliveries.
534 (Suppressing duplicates isn't a good idea as you lose the information
535 about possibly different redirections that led to the duplicates.)
536
25257489
PH
537PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
538 systems where poll() doesn't work, in particular OS X.
539
c816d124
PH
540PH/10 Added more information to debugging output for retry time not reached.
541
a9ccd69a
PH
542PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
543 operations in malware.c.
544
75fa1910
PH
545PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
546 signatures.
547
a7d7aa58
PH
548PH/13 If write_rejectlog was set false when logging was sent to syslog with
549 syslog_duplication set false, log lines that would normally be written
550 both the the main log and to the reject log were not written to syslog at
551 all.
552
42119b09
PH
553PH/14 In the default configuration, change the use of "message" in ACL warn
554 statements to "add_header".
555
41609df5
PH
556PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
557 not followed by a command (e.g. "seen endif").
558
a5bd321b
PH
559PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
560 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
561 latter.
562
e85a7ad5 563PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
564 so that it is now:
565
e85a7ad5
PH
566 ${if or { \
567 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
568 { match{$h_precedence:}{(?i)bulk|list|junk} } \
569 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
570 }{no}{yes}}
571
e85a7ad5
PH
572 The Auto-Submitted: and various List- headers are standardised, whereas I
573 don't think Precedence: ever was.
5dff5817 574
d8fe1c03
PH
575PH/18 Refactored debugging code in route_finduser() to show more information,
576 in particular, the error code if getpwnam() issues one.
577
16282d2b
PH
578PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
579 This is apparently needed in addition to the PH/07 change above to avoid
580 any possible encoding problems.
581
35d40a98
PH
582PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
583 but not after initializing Perl.
584
034d99ab
PH
585PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
586 output them only if debugging. By default they are written stderr,
587 apparently, which is not desirable.
588
6ec97b1b
PH
589PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
590 queries.
591
e22ca4ac
JJ
592JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
593 --not options
594
595JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
596
33d73e3b
PH
597PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
598 authenticated or an ident call has been made. Suppress the default
599 values for $authenticated_id and $authenticated_sender (but permit -oMai
600 and -oMas) when testing with -bh.
601
9ecb03f3
PH
602PH/24 Re-jigged the order of the tests in the default configuration so that the
603 tests for valid domains and recipients precede the DNS black list and CSA
604 tests, on the grounds that those ones are more expensive.
605
084efe8d
PH
606PH/25 Exim was not testing for a space following SMTP commands such as EHLO
607 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
608 This bug exists in every version of Exim that I still have, right back to
609 0.12.
610
366fc9f0
PH
611PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
612 However, an attempt to turn on case-sensitivity in a regex key by
613 including (?-i) didn't work because the subject string was already
614 lowercased, and the effects were non-intuitive. It turns out that a
615 one-line patch can be used to allow (?-i) to work as expected.
616
c59f5781 617
c887c79e
TF
618Exim version 4.62
619-----------------
620
621TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
622 other effects) broke the use of negated acl sub-conditions.
623
1cce3af8
PH
624PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
625 patch).
626
afb3eaaf
PH
627PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
628 "Deny" causes Exim to reject the incoming connection with a 554 error.
629 Unfortunately, if there is a major crisis, such as a disk failure,
630 tcp-wrappers gives "deny", whereas what one would like would be some
631 kind of temporary error. A kludge has been added to help with this.
632 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
633 554 error is used if errno is still zero or contains ENOENT (which occurs
634 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
635 451 error is used.
636
e173618b
PH
637PH/03 Add -lutil to the default FreeBSD LIBS setting.
638
dd16e114
PH
639PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
640 errors. Otherwise a message that provokes a temporary error (when other
641 messages do not) can cause a whole host to time out.
642
f7fd3850
PH
643PH/05 Batch deliveries by appendfile and pipe transports did not work when the
644 addresses were routed directly to files or pipes from a redirect router.
645 File deliveries just didn't batch; pipe deliveries might have suffered
646 odd errors.
647
d87df92c
PH
648PH/06 A failure to get a lock for a hints database would erroneously always say
649 "Failed to get write lock", even when it was really a read lock.
650
7e9f683d
PH
651PH/07 The appendfile transport was creating MBX lock files with a fixed mode
652 of 0600. This has been changed to use the value of the lockfile_mode
653 option (which defaults to 0600).
654
bfad5236
PH
655PH/08 Applied small patch from the Sieve maintainer.
656
01c490df
PH
657PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
658 folder from quota calculations, a direct delivery into this folder messed
659 up the contents of the maildirsize file. This was because the regex was
660 used only to exclude .Trash (or whatever) when the size of the mailbox
661 was calculated. There was no check that a delivery was happening into an
662 excluded directory. This bug has been fixed by ignoring all quota
663 processing for deliveries into excluded directories.
664
d6629cdc
PH
665PH/10 Added the maildirfolder_create_regex option to appendfile.
666
1cce3af8 667
214e2000
PH
668Exim version 4.61
669-----------------
670
671PH/01 The code for finding all the local interface addresses on a FreeBSD
672 system running IPv6 was broken. This may well have applied to all BSD
673 systems, as well as to others that have similar system calls. The broken
674 code found IPv4 interfaces correctly, but gave incorrect values for the
675 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
676 that it would not match correctly against @[] and not recognize the IPv6
677 addresses as local.
678
f9daeae0
PH
679PH/02 The ipliteral router was not recognizing addresses of the form user@
680 [ipv6:....] because it didn't know about the "ipv6:" prefix.
681
7e66e54d
PH
682PH/03 Added disable_ipv6.
683
c8ea1597
PH
684PH/04 Changed $reply_address to use the raw form of the headers instead of the
685 decoded form, because it is most often used to construct To: headers
686 lines in autoreplies, and the decoded form may well be syntactically
687 invalid. However, $reply_address has leading white space removed, and all
688 newlines turned into spaces so that the autoreply transport does not
689 grumble.
690
911f6fde
PH
691PH/05 If group was specified without a user on a router, and no group or user
692 was specified on a transport, the group from the router was ignored.
693
47ca6d6c
PH
694PH/06 Increased the number of ACL variables to 20 of each type, and arranged
695 for visible compile-time settings that can be used to change these
696 numbers, for those that want even more. Backwards compatibility with old
697 spool files has been maintained. However, going back to a previous Exim
698 release will lost any variables that are in spool files.
699
ed0e9820
PH
700PH/07 Two small changes when running in the test harness: increase delay when
701 passing a TCP/IP connection to a new process, in case the original
702 process has to generate a bounce, and remove special handling of
703 127.0.0.2 (sic), which is no longer necessary.
704
eff37e47
PH
705PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
706 be the same on different OS.
707
1921d2ea
PH
708PH/09 Moved a debug statement in filter processing to avoid a race problem when
709 testing.
710
b3f69ca8
JJ
711JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
712 whether --show-vars was specified or not
713
714JJ/02 exipick: Added support for new ACL variable spool format introduced
715 in 4.61-PH/06
716
424a1c63
PH
717PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
718 syntactically invalid From: or Reply-to: line, and a filter used this to
719 generate an autoreply, and therefore failed to obtain an address for the
720 autoreply, Exim could try to deliver to a non-existent relative file
721 name, causing unrelated and misleading errors. What now happens is that
722 it logs this as a hard delivery error, but does not attempt to create a
723 bounce message.
724
7a100415
PH
725PH/11 The exinext utility has a -C option for testing purposes, but although
726 the given file was scanned by exinext itself; it wasn't being passed on
727 when Exim was called.
728
19b9dc85
PH
729PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
730 an end-of-file indication when reading a command response.
731
309bd837
PH
732PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
733 compiled. In many other places in Exim, IPv6 addresses are always
734 recognized, so I have changed this. It also means that IPv4 domain
735 literals of the form [IPV4:n.n.n.n] are now always recognized.
736
59e82a2a
PH
737PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
738 used if the router is not running as root, for example, when verifying at
739 ACL time, or when using -bh. The debugging output from this situation was
740 non-existent - all you got was a failure to exec. I have made two
741 changes:
742
743 (a) Failures to set uid/gid, the current directory, or a process leader
744 in a subprocess such as that created by queryprogram now generate
745 suitable debugging ouput when -d is set.
746
747 (b) The queryprogram router detects when it is not running as root,
748 outputs suitable debugging information if -d is set, and then runs
749 the subprocess without attempting to change uid/gid.
750
9edc04ce
PH
751PH/15 Minor change to Makefile for building test_host (undocumented testing
752 feature).
753
1349e1e5
PH
754PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
755 additional section of a DNS packet that returns MX or SRV records.
756 Instead, it always explicitly searches for A/AAAA records. This avoids
757 major problems that occur when a DNS server includes only records of one
758 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
759 fixed another bug: if SRV records were looked up and the corresponding
760 address records were *not* found in the additional section, the port
761 values from the SRV records were lost.
762
ea49d0e1
PH
763PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
764 using the correct key (the original address) when searching the retry
765 rules in order to find which one to use for generating the retry hint.
766
064a94c9
PH
767PH/18 If quota_warn_message contains a From: header, Exim now refrains from
768 adding the default one. Similarly, if it contains a Reply-To: header, the
769 errors_reply_to option, if set, is not used.
770
727071f8
PH
771PH/19 When calculating a retry time, Exim used to measure the "time since
772 failure" by looking at the "first failed" field in the retry record. Now
773 it does not use this if it is later than than the arrival time of the
774 message. Instead it uses the arrival time. This makes for better
775 behaviour in cases where some deliveries succeed, thus re-setting the
776 "first failed" field. An example is a quota failure for a huge message
777 when small messages continue to be delivered. Without this change, the
778 "time since failure" will always be short, possible causing more frequent
779 delivery attempts for the huge message than are intended.
dd16e114 780 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 781
f78eb7c6
PH
782PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
783 $1, $2, $3) because the numerical variables can be reset during some
784 expansion items (e.g. "match"), thereby losing the authentication data.
785
21c28500
PH
786PH/21 Make -bV show the size of off_t variables so that the test suite can
787 decide whether to run tests for quotas > 2G.
788
789PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
790 mailbox_size, and mailbox_filecount in the appendfile transport. If a
791 filecount value is greater than 2G or if a quota value is greater than 2G
792 on a system where the size of off_t is not greater than 4, a panic error
793 is given.
794
1688f43b
PH
795PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
796 never match. The debug and -bh output now contains an explicit error
797 message indicating a malformed IPv4 address or mask.
798
799PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
800 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
801 PH/23 above applies.
802
9675b384
PH
803PH/25 Do not write to syslog when running in the test harness. The only
804 occasion when this arises is a failure to open the main or panic logs
805 (for which there is an explicit test).
806
6a3f1455
PH
807PH/26 Added the /no_tell option to "control=freeze".
808
dac79d3e
PH
809PH/27 If a host name lookup failed very early in a connection, for example, if
810 the IP address matched host_lookup and the reverse lookup yielded a name
811 that did not have a forward lookup, an error message of the form "no IP
812 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
813 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 814
5977a0b3
PH
815PH/28 An enabling patch from MH: add new function child_open_exim2() which
816 allows the sender and the authenticated sender to be set when
817 submitting a message from within Exim. Since child_open_exim() is
818 documented for local_scan(), the new function should be too.
819
c91535f3
PH
820PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
821 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
822 results in an empty string is now treated as unset.
823
0d46a8c8
PH
824PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
825
278c6e6c
PH
826PH/31 Added sender_verify_fail logging option.
827
2cbb4081
PH
828PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
829 needed by RFC 822 but not by RFC 2822 was commented out. I have now
830 tidied the source and removed it altogether.
831
3eef829e
PH
832PH/33 When a queue run was abandoned because the load average was too high, a
833 log line was always written; now it is written only if the queue_run log
834 selector is set. In addition, the log line for abandonment now contains
835 information about the queue run such as the pid. This is always present
836 in "start" and "stop" lines but was omitted from the "abandon" line.
837
1ab95fa6
PH
838PH/34 Omit spaces between a header name and the colon in the error message that
839 is given when verify = headers_syntax fails (if there are lots of them,
840 the message gets confusing).
841
230205fc
PH
842PH/35 Change the default for dns_check_names_pattern to allow slashes within
843 names, as there are now some PTR records that contain slashes. This check
844 is only to protect against broken name servers that fall over on strange
845 characters, so the fact that it applies to all lookups doesn't matter.
846
75e0e026
PH
847PH/36 Now that the new test suite is complete, we can remove some of the
848 special code in Exim that was needed for the old test suite. For example,
849 sorting DNS records because real resolvers return them in an arbitrary
850 order. The new test suite's fake resolver always returns records in the
851 same order.
852
853PH/37 When running in the test harness, use -odi for submitted messages (e.g.
854 bounces) except when queue_only is set, to avoid logging races between
855 the different processes.
856
145396a6
PH
857PH/38 Panic-die if .include specifies a non-absolute path.
858
3cd34f13
PH
859PH/39 A tweak to the "H" retry rule from its user.
860
11121d3d
JJ
861JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
862 a label. They prevented compilation on older perls.
863
864JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
865 a warning to be raised on newish perls.
866
867JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
868 on queue. Changes to match documented behaviour of showing count of
869 messages matching specified criteria.
870
8def5aaf
PH
871PH/40 Changed the default ident timeout from 30s to 5s.
872
929ba01c
PH
873PH/41 Added support for the use of login_cap features, on those BSD systems
874 that have them, for controlling the resources used by pipe deliveries.
875
2632889e
PH
876PH/42 The content-scanning code uses fopen() to create files in which to put
877 message data. Previously it was not paying any attention to the mode of
878 the files. Exim runs with umask(0) because the rest of the code creates
879 files with open(), and sets the required mode explicitly. Thus, these
880 files were ending up world-writeable. This was not a big issue, because,
881 being within the spool directory, they were not world-accessible. I have
882 created a function called modefopen, which takes an additional mode
883 argument. It sets umask(777), creates the file, chmods it to the required
884 mode, then resets the umask. All the relevant calls to fopen() in the
885 content scanning code have been changed to use this function.
886
944a9c55
PH
887PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
888 to 24 hours. This avoids potential overflow problems when processing G
889 and H retry rules. I suspect nobody ever tinkers with this value.
890
4a23603b
PH
891PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
892
4730f942
PH
893PH/45 When the plaintext authenticator is running as a client, the server's
894 challenges are checked to ensure they are valid base64 strings. By
895 default, the authentication attempt is cancelled if an invalid string is
896 received. Setting client_ignore_invalid_base64 true ignores these errors.
897 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
898 they are received. Thus, the responses can be made to depend on the
899 challenges. If an invalid string is ignored, an empty string is placed in
900 the variable.
901
30dba1e6
PH
902PH/46 Messages that are created by the autoreply transport now contains a
903 References: header, in accordance with RFCs 2822 and 3834.
904
382afc6b
PH
905PH/47 Added authenticated_sender_force to the smtp transport.
906
a86229cf
PH
907PH/48 The ${prvs expansion was broken on systems where time_t was long long.
908
50c99ba6
PH
909PH/49 Installed latest patch from the Sieve maintainer.
910
d35e429d
PH
911PH/50 When an Exim quota was set without a file count quota, and mailbox_size
912 was also set, the appendfile transport was unnecessarily scanning a
913 directory of message files (e.g. for maildir delivery) to find the count
914 of files (along with the size), even though it did not need this
915 information. It now does the scan only if it needs to find either the
916 size of the count of files.
917
f90d018c
PH
918PH/51 Added ${time_eval: to convert Exim time strings into seconds.
919
75def545
PH
920PH/52 Two bugs concerned with error handling when the smtp transport is
921 used in LMTP mode:
922
923 (i) Exim was not creating retry information for temporary errors given
924 for individual recipients after the DATA command when the smtp transport
925 was used in LMTP mode. This meant that they could be retried too
926 frequently, and not timed out correctly.
927
928 (ii) Exim was setting the flag that allows error details to be returned
929 for LMTP errors on RCPT commands, but not for LMTP errors for individual
930 recipients that were returned after the DATA command.
931
932PH/53 This is related to PH/52, but is more general: for any failing address,
933 when detailed error information was permitted to be returned to the
934 sender, but the error was temporary, then after the final timeout, only
935 "retry timeout exceeded" was returned. Now it returns the full error as
936 well as "retry timeout exceeded".
937
c46782ef
PH
938PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
939 do this, and (what is worse) MTAs that accept it.
940
71fafd95
PH
941PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
942 will now be deprecated.
943
2c5db4fd
PH
944PH/56 New os.c-cygwin from the Cygwin maintainer.
945
9cf6b11a
JJ
946JJ/06 exipick: added --unsorted option to allow unsorted output in all output
947 formats (previously only available in exim formats via -bpr, -bpru,
948 and -bpra. Now also available in native and exiqgrep formats)
949
950JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
951 with very large, slow to parse queues
952
953JJ/08 exipick: added ! as generic prefix to negate any criteria format
954
955JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
956
898d150f
PH
957PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
958 responses to authentication challenges, though it was showing the
959 challenges; (ii) I've removed the CR characters from the debug output for
960 SMTP output lines.
961
46218253
PH
962PH/58 Allow for the insertion of a newline as well as a space when a string
963 is turned into more than one encoded-word during RFC 2047 encoding. The
964 Sieve code now uses this.
965
e97957bc
PH
966PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
967 data_4xx, lost_connection, tls_required.
968
81e509d7
PH
969PH/60 When a VRFY deferred or FAILED, the log message rather than the user
970 message was being sent as an SMTP response.
971
3d240ff7
PH
972PH/61 Add -l and -k options to exicyclog.
973
b37c4101
PH
974PH/62 When verifying, if an address was redirected to one new address, so that
975 verification continued, and the new address failed or deferred after
976 having set something in $address_data, the value of $address_data was not
977 passed back to the ACL. This was different to the case when no
978 redirection occurred. The value is now passed back in both cases.
979
79378e0f
PH
980PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
981 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
982 use login_cap.h, so on its own it isn't the distinguishing feature. The
983 new name refers directly to the setclassresources() function.
984
e49c7bb4
PH
985PH/65 Added configuration files for NetBSD3.
986
d114ec46
PH
987PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
988
f3d7df6c
PH
989PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
990 is preferred over IPv4.
991
715ab376
PH
992PH/68 The bounce_return_message and bounce_return_body options were not being
993 honoured for bounces generated during the reception of non-SMTP messages.
994 In particular, this applied to messages rejected by the ACL. This bug has
995 been fixed. However, if bounce_return_message is true and bounce_return_
996 body is false, the headers that are returned for a non-SMTP message
997 include only those that have been read before the error was detected.
998 (In the case of an ACL rejection, they have all been read.)
999
6b31b150
PH
1000PH/69 The HTML version of the specification is now built in a directory called
1001 spec_html instead of spec.html, because the latter looks like a path with
1002 a MIME-type, and this confuses some software.
1003
1004PH/70 Catch two compiler warnings in sieve.c.
1005
d515a917
PH
1006PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1007 function verify_get_ident() calls ip_connect() to connect a socket, but
1008 if the "connect()" function timed out, ip_connect() used to close the
1009 socket. However, verify_get_ident() also closes the socket later, and in
1010 between Exim writes to the log, which may get opened at this point. When
1011 the socket was closed in ip_connect(), the log could get the same file
1012 descriptor number as the socket. This naturally causes chaos. The fix is
1013 not to close the socket in ip_connect(); the socket should be closed by
1014 the function that creates it. There was only one place in the code where
1015 this was missing, in the iplookup router, which I don't think anybody now
1016 uses, but I've fixed it anyway.
1017
9b8fadde
PH
1018PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1019 well as to direct DNS lookups. Otherwise the handling of names in host
1020 lists is inconsistent and therefore confusing.
1021
214e2000 1022
5de37277
PH
1023Exim version 4.60
1024-----------------
1025
cc38ddbf
PH
1026PH/01 Two changes to the default runtime configuration:
1027
1028 (1) Move the checks for relay_from_hosts and authenticated clients from
1029 after to before the (commented out) DNS black list checks.
1030
1031 (2) Add control=submission to the relay_from_hosts and authenticated
1032 clients checks, on the grounds that messages accepted by these
1033 statements are most likely to be submissions.
5de37277 1034
72fdd6ae
PH
1035PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1036
1037 (1) Generate an error if the third argument for the ${prvs expansion is
1038 not a single digit.
1039
1040 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1041 string.
1042
1043 (3) Reset the variables that are obtained from the first argument of
1044 ${prvscheck and used in the second argument before leaving the code,
1045 because their memory is reclaimed, so using them afterwards may do
1046 silly things.
1047
1048 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1049 one (it's much easier than Tom thought :-).
1050
1051 (5) Because of (4), we can now allow for the use of $prvscheck_result
1052 inside the third argument.
cb9328de 1053
cb741023
PH
1054PH/03 For some reason, the default setting of PATH when running a command from
1055 a pipe transport was just "/usr/bin". I have changed it to
1056 "/bin:/usr/bin".
1057
f174f16e
PH
1058PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1059 anything to be listed in the output from -bV.
b2f5a032 1060
c25242d7
PH
1061PH/05 When a filter generated an autoreply, the entire To: header line was
1062 quoted in the delivery log line, like this:
1063
1064 => >A.N.Other <ano@some.domain> <original@ddress> ...
1065
1066 This has been changed so that it extracts the operative address. There
1067 may be more than one such address. If so, they are comma-separated, like
1068 this:
1069
1070 => >ano@some.domain,ona@other.domain <original@ddress> ...
1071
82c19f95
PH
1072PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1073 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1074 not being looked up in the rDNS to get a host name, Exim was showing the
1075 IP address twice in Received: lines, even though the IP addresses were
1076 identical. For example:
1077
1078 Received: from [1.2.3.4] (helo=[1.2.3.4])
1079
1080 However, if the real host name was known, it was omitting the HELO data
1081 if it matched the actual IP address. This has been tidied up so that it
1082 doesn't show the same IP address twice.
1083
d7ffbc12
PH
1084PH/07 When both +timestamp and +memory debugging was on, the value given by
1085 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1086 called by the debug printing, thereby overwriting the timestamp buffer.
1087 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1088
9f526266
PH
1089PH/08 When the original message was included in an autoreply transport, it
1090 always said "this is a copy of the message, including all the headers",
1091 even if body_only or headers_only was set. It now gives an appropriate
1092 message.
1093
87fcc8b9
PH
1094PH/09 Applied a patch from the Sieve maintainer which:
1095
1096 o fixes some comments
1097 o adds the (disabled) notify extension core
1098 o adds some debug output for the result of if/elsif tests
1099 o points to the current vacation draft in the documentation
1100 and documents the missing references header update
1101
1102 and most important:
1103
1104 o fixes a bug in processing the envelope test (when testing
1105 multiple envelope elements, the last element determinted the
1106 result)
1107
456682f5
PH
1108PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1109 Electronic Mail") by including:
1110
1111 Auto-submitted: auto-generated
1112
1113 in the messages that it generates (bounce messages and others, such as
1114 warnings). In the case of bounce messages for non-SMTP mesages, there was
1115 also a typo: it was using "Auto_submitted" (underscore instead of
1116 hyphen). Since every message generated by Exim is necessarily in response
1117 to another message, thes have all been changed to:
1118
1119 Auto-Submitted: auto-replied
1120
1121 in accordance with these statements in the RFC:
1122
1123 The auto-replied keyword:
1124
1125 - SHOULD be used on messages sent in direct response to another
1126 message by an automatic process,
1127
1128 - MUST NOT be used on manually-generated messages,
1129
1130 - MAY be used on Delivery Status Notifications (DSNs) and Message
1131 Disposition Notifications (MDNs),
1132
1133 - MUST NOT be used on messages generated by automatic or periodic
1134 processes, except for messages which are automatic responses to
1135 other messages.
1136
3e46c1aa
PH
1137PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1138 to the default Received: header definition.
456682f5 1139
49826d12
PH
1140PH/12 Added log selector acl_warn_skipped (default on).
1141
eba0c039
PH
1142PH/13 After a successful wildlsearch lookup, discard the values of numeric
1143 variables because (a) they are in the wrong storage pool and (b) even if
1144 they were copied, it wouldn't work properly because of the caching.
1145
a0d6ba8a
PH
1146PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1147 checking when decoding. Apparently there are clients that generate
1148 overlong encoded strings. Why am I not surprised?
1149
f0917727
PH
1150PH/15 If the first argument of "${if match_address" was not empty, but did not
1151 contain an "@" character, Exim crashed. Now it writes a panic log message
1152 and treats the condition as false.
1153
096fee00
PH
1154PH/16 In autoreply, treat an empty string for "once" the same as unset.
1155
024bd3c2
PH
1156PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1157 extension "envelope-auth". The code is finished and in agreement with
1158 other implementations, but there is no documentation so far and in fact,
1159 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1160 not changing the active code.
1161
1162 Print executed "if" and "elsif" statements when debugging is used. This
1163 helps a great deal to understand what a filter does.
1164
1165 Document more things not specified clearly in RFC3028. I had all this
1166 sorted out, when out of a sudden new issues came to my mind. Oops."
1167
df199fec
PH
1168PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1169 (Bugzilla #53).
1170
d27f1df3
PH
1171PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1172 canonical form (as documented). However, after a host name lookup from
1173 the IP address, check_host() was doing a simple string comparison with
1174 addresses acquired from the DNS when checking that the found name did
1175 have the original IP as one of its addresses. Since any found IPv6
1176 addresses are likely to be in abbreviated form, the comparison could
1177 fail. Luckily, there already exists a function for doing the comparison
1178 by converting both addresses to binary, so now that is used instead of
1179 the text comparison.
1180
96776534
PH
1181PH/20 There was another similar case to PH/19, when a complete host name was
1182 given in a host list; looking up its IP address could give an abbreviated
1183 form, whereas the current host's name might or might not be abbreviated.
1184 The same fix has been applied.
1185
5de37277 1186
9a799bc0
PH
1187Exim version 4.54
1188-----------------
1189
1190PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1191 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1192 It now does.
1193
99a4b039
PH
1194PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1195 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1196
1197PH/03 Typo: missing ".o" in src/pcre/Makefile.
1198
4b233853
PH
1199PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1200 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1201 Also, for "Auto-Submitted", treat anything other than "no" as
1202 non-personal, in accordance with RFC 3834. (Previously it treated
1203 anything starting "auto-" as non-personal.)
1204
8857ccfd
PH
1205TF/01 The control=submission/name=... option had a problem with syntax
1206 errors if the name included a slash character. The /name= option
1207 now slurps the rest of the string, so it can include any characters
1208 but it must come last in the list of options (after /sender_retain
1209 or /domain=).
1210
433a2980
PH
1211PH/05 Some modifications to the interface to the fake nameserver for the new
1212 testing suite.
1213
3e46c1aa 1214
9a799bc0 1215
e3a311ba
TK
1216Exim version 4.53
1217-----------------
1218
1219TK/01 Added the "success_on_redirect" address verification option. See
1220 NewStuff for rationale and an example.
1221
13b685f9
PH
1222PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1223
395ff96d
PH
1224PH/02 Patch to exigrep to allow it to work on syslog lines.
1225
5b68f6e4
PH
1226PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1227 fread() to skip over the body file's header line, because in Cygwin the
1228 header line is locked and is inaccessible.
1229
1ab52c69
PH
1230PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1231 co-exist for some time) to make it clear that it is the Exim ID that is
1232 referenced, not the Message-ID: header line.
1233
b07e6aa3
PH
1234PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1235 string_format() function, because snprintf() does not exist on all
1236 operating systems.
1237
254e032f
PH
1238PH/06 The use of forbid_filter_existstest now also locks out the use of the
1239 ${stat: expansion item.
1240
3af76a81
PH
1241PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1242 protocol synchronization error", to keep the pedants happy.
1243
2548ba04
PH
1244PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1245 well as for IRIX systems, when gcc is being used. See the host.c source
1246 file for comments.
1247
b6c6011d
PH
1248PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1249
cf39cf57
PH
1250PH/10 Named domain lists were not working if used in a queue_smtp_domains
1251 setting.
1252
f1513293
PH
1253PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1254 transport and to the smtp transport in LMTP mode.
1255
727549a4
PH
1256TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1257
af46795e
PH
1258PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1259 run a filter in a subprocess. This could lead to confusion in subsequent
1260 lookups in the parent process. There should also be a search_tidyup() at
1261 the end of the subprocess.
1262
d7b47fd0
PH
1263PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1264 only if the host matched helo_try_verify_hosts, which caused the
1265 verification to occur when the EHLO/HELO command was issued. The ACL just
1266 tested the remembered result. Now, if a previous verification attempt has
1267 not happened, "verify = helo" does it there and then.
1268
ee744174
JJ
1269JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1270
b582ab87
PH
1271TK/03 Fix log output including CR from clamd.
1272
41a13e0a
PH
1273PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1274 exist provoked a memory error which could cause a segfault.
1275
f625cc5a
PH
1276PH/15 Installed PCRE 6.2
1277
1278PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1279
21f7af35
PH
1280PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1281 of the problem. Specifically, suggested +O2 rather than +O1 for the
1282 HP-UX compiler.
1283
31480e42
PH
1284PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1285
2d280592
PH
1286PH/20 If a delivery was routed to a non-standard port by means of an SRV
1287 record, the port was not correctly logged when the outgoing_port log
1288 selector was set (it logged the transort's default port).
1289
7cd1141b
PH
1290PH/21 Added support for host-specific ports to manualroute, queryprogram,
1291 fallback_hosts, and "hosts" in the smtp transport.
1292
1293PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1294 host errors such as "Connection refused".
1295
750af86e
PH
1296PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1297 authentication with radiusclient 0.4.9:
1298
1299 - Error returned from rc_read_config was caught wrongly
1300 - Username/password not passed on to radius server due to wrong length.
1301
1302 The presumption is that some radiusclient API changes for 4.51/PH/17
1303 were not taken care of correctly. The code is still untested by me (my
1304 Linux distribution still has 0.3.2 of radiusclient), but it was
1305 contributed by a Radius user.
1306
1307PH/24 When doing a callout, the value of $domain wasn't set correctly when
1308 expanding the "port" option of the smtp transport.
1309
4304270b
TK
1310TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1311 while reading a MIME header. Thanks to Tom Hughes for a patch.
1312
750af86e
PH
1313PH/24 Include config.h inside local_scan.h so that configuration settings are
1314 available.
1315
64ffc24f
PH
1316PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1317 that in an ACL for RCPT (for example), you can examine exactly what was
1318 received.
1319
5dd9625b
PH
1320PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1321 commands, but it was not correctly comparing the address with the actual
1322 client host address. Thus, it would show the EHLO address in Received:
1323 header lines when this was not necessary.
1324
5591031b
PH
1325PH/27 Added the % operator to ${eval:}.
1326
ba18e66a
PH
1327PH/28 Exim tries to create and chdir to its spool directory when it starts;
1328 it should be ignoring failures (because with -C, for example, it has lost
1329 privilege). It wasn't ignoring creation failures other than "already
1330 exists".
1331
9cec981f
PH
1332PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1333 -bV or -d is used.
1334
aa2b5c79
PH
1335PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1336 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1337 too many continuations, the temporary file was not being removed, and the
1338 return code was incorrect.
aa2b5c79 1339
48a53b7f
PH
1340PH/31 Missing "BOOL" in function definition in filtertest.c.
1341
1c59d63b
PH
1342PH/32 Applied Sieve patches from the maintainer.
1343
671012da
TK
1344TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1345
1509d3a8
PH
1346PH/33 Added "verify = not_blind".
1347
1348PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1349 Local/Makefile (with some defaults set). These are used in built scripts
1350 such as exicyclog, but they have never been used in the exim_install
1351 script (though there are many overriding facilities there). I have
1352 arranged that the exim_install script now takes note of these two
1353 settings.
1354
1355PH/35 Installed configuration files for Dragonfly.
1356
2fe1a124
PH
1357PH/36 When a locally submitted message by a trusted user did not contain a
1358 From: header, and the sender address was obtained from -f or from an SMTP
1359 MAIL command, and the trusted user did not use -F to supply a sender
1360 name, $originator_name was incorrectly used when constructing a From:
1361 header. Furthermore, $originator_name was used for submission mode
1362 messages from external hosts without From: headers in a similar way,
1363 which is clearly wrong.
1364
8800895a
PH
1365PH/37 Added control=suppress_local_fixups.
1366
ccfdb010
PH
1367PH/38 When log_selector = +received_sender was set, and the addition of the
1368 sender made the log line's construction buffer exactly full, or one byte
1369 less than full, an overflow happened when the terminating "\n" was
1370 subsequently added.
1371
1130bfb0
PH
1372PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1373 when the result of a list match is failure because a DNS lookup failed.
1374
ebcb507f
PH
1375PH/40 RM_COMMAND is now used in the building process.
1376
c35e155c
PH
1377PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1378 the "build-* directories that it finds.
1379
95d1f782
PH
1380PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1381 address in a domain literal was a prefix of an interface address.
1382
fd6de02e
PH
1383PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1384 when verifying a sender address, unless rewrite_headers is false.
1385
58de37c5
PH
1386PH/44 Wrote a long comment about why errors_to addresses are verified as
1387 recipients, not senders.
1388
261cf466
TF
1389TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1390 the ratelimit ACL was added.
1391
3ee512ff
PH
1392PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1393
e08c430f
PH
1394PH/46 Added extra information about PostgreSQL errors to the error string.
1395
bef5a11f
PH
1396PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1397 avoiding the need to install special zones in a real server. This is
1398 backwards compatible; if it can't find the fake resolver, it drops back.
1399 Thus, both old and new test suites can be run.
1400
7546de58
TF
1401TF/02 Added util/ratelimit.pl
1402
e5d5a95f
TF
1403TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1404 clock is set back in time.
1405
2e88a017
TF
1406TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1407 Candler <B.Candler@pobox.com>.
1408
a5f65aa4
TF
1409TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1410 OK for addresses that are the result of redirections.
1411
e7726cbf
PH
1412PH/48 A number of further additions for the benefit of the new test suite,
1413 including a fake gethostbyname() that interfaces to the fake DNS resolver
1414 (see PH/47 above).
1415
a7fdad5b
TF
1416TF/06 The fix for widen_domains has also been applied to qualify_single and
1417 search_parents which are the other dnslookup options that can cause
1418 header rewrites.
1419
6af56900
PH
1420PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1421 type ("H").
1422
0925ede6
PH
1423PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1424
66afa403
TF
1425TF/07 Exim produced the error message "an SRV record indicated no SMTP
1426 service" if it encountered an MX record with an empty target hostname.
1427 The message is now "an MX or SRV record indicated no SMTP service".
1428
0154e85a
TF
1429TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1430 if the DNS of the sending site is misconfigured. This is quite a
1431 common situation. This change restores the behaviour of treating a
1432 helo verification defer as a failure.
1433
16f12c76
PH
1434PH/51 If self=fail was set on a router, the bounce message did not include the
1435 actual error message.
1436
bbe902f0 1437
e5a9dba6
PH
1438Exim version 4.52
1439-----------------
1440
1441TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1442
22c3b60b
PH
1443PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1444 command itself ended in error, the underlying message about the transport
1445 filter timeout was being overwritten with the pipe command error. Now the
1446 underlying error message should be appended to the second error message.
1447
06a9b4b5
PH
1448TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1449
c1ac6996
PH
1450PH/02 Reduce the amount of output that "make" produces by default. Full output
1451 can still be requested.
1452
9c7a242c
PH
1453PH/03 The warning log line about a condition test deferring for a "warn" verb
1454 was being output only once per connection, rather than after each
1455 occurrence (because it was using the same function as for successful
1456 "warn" verbs). This seems wrong, so I have changed it.
1457
87ba3f5f
PH
1458TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1459 it should not have, which might have caused a crash in the right
1460 circumstances, but probably never did.
1461
1462PH/04 Installed a modified version of Tony Finch's patch to make submission
1463 mode fix the return path as well as the Sender: header line, and to
1464 add a /name= option so that you can make the user's friendly name appear
1465 in the header line.
1466
29aba418
TF
1467TF/03 Added the control = fakedefer ACL modifier.
1468
fe0dab11
TF
1469TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1470 Mark Lowes for thorough testing.
870f6ba8 1471
11d337a4
TK
1472TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1473
1474TK/03 Merged latest SRS patch from Miles Wilton.
1475
415c8f3b
PH
1476PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1477 with the definition in sysexits.h (which is #included earlier).
1478 Fortunately, Exim does not actually use EX_OK. The code used to try to
1479 preserve the sysexits.h value, by assumimg that macro definitions were
1480 scanned for macro replacements. I have been disabused of this notion,
1481 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1482
958541e9
PH
1483PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1484 in the smtp transport. When a block could not be written in a single
1485 write() function, the timeout was being re-applied to each part-write.
1486 This seems wrong - if the receiver was accepting one byte at a time it
1487 would take for ever. The timeout is now adjusted when this happens. It
1488 doesn't have to be particularly precise.
1489
c206415f
TK
1490TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1491 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1492
2a4be8f9
PH
1493PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1494 without a domain if the check to <postmaster@domain> fails.
1495
1cba11c5
SC
1496SC/01 Eximstats: added -xls and the ability to specify output files
1497 (patch written by Frank Heydlauf).
1498
1499SC/02 Eximstats: use FileHandles for outputing results.
1500
1501SC/03 Eximstats: allow any combination of xls, txt, and html output.
1502
1503SC/04 Eximstats: fixed display of large numbers with -nvr option
1504
1505SC/05 Eximstats: fixed merging of reports with empty tables.
1506
1507SC/06 Eximstats: added the -include_original_destination flag
1508
1509SC/07 Eximstats: removed tabs and trailing whitespace.
1510
1005d00e
TK
1511TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1512
1513TK/06 MBOX spool code: Add real "From " MBOX separator line
1514 so the .eml file is really in mbox format (even though
1515 most programs do not really care). Patch from Alex Miller.
1516
1517TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1518 The latter is generated from $received_to and is only set if the
1519 message has one envelope recipient. SA can use these headers,
1520 obviously out-of-the-box. Patch from Alex Miller.
1521
9b4768fa
PH
1522PH/08 The ${def test on a variable was returning false if the variable's
1523 value was "0", contrary to what the specification has always said!
1524 The result should be true unless the variable is empty.
1525
1526PH/09 The syntax error of a character other than { following "${if
1527 def:variable_name" (after optional whitespace) was not being diagnosed.
1528 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1529 accidental colon was present, for example, could give incorrect results.
1530
0d7eb84a
PH
1531PH/10 Tidied the code in a number of places where the st_size field of a stat()
1532 result is used (not including appendfile, where other changes are about
1533 to be made).
1534
1535PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1536 This involved changing a lot of size variables from int to off_t. It
1537 should work with maildirs and everything.
1538
40727bee
TK
1539TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1540 spamd dying while we are connected to it.
1541
554d2369
TF
1542TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1543 <jgh@wizmail.org>
1544
1f922db1
PH
1545PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1546 function for BDB 4.3.
1547
ef213c3b
PH
1548PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1549
8ac170f3
PH
1550PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1551 the sources for PCRE have been re-arranged and more files are now
1552 involved.
1553
b1c749bb
PH
1554PH/15 The code I had for printing potentially long long variables in PH/11
1555 above was not the best (it lost precision). The length of off_t variables
1556 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1557 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1558 to be "long long int" or "long int". This is needed for the internal
1559 formatting function string_vformat().
b1c749bb 1560
4aac9b49
PH
1561PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1562 the configuration file to be ":syslog", then the script "guesses" where
1563 the logs files are, rather than using the compiled in default. In our
1564 case the guess is not the same as the compiled default, so the script
1565 suddenly stopped working when I started to use syslog. The patch checks
1566 to see if log_file_path is "". If so, it attempts to read it from exim
1567 with no configuration file to get the compiled in version, before it
1568 falls back to the previous guessing code."
1569
294520c8
TK
1570TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1571 implementing BATV in an Exim configuration. See NewStuff for the gory
1572 details.
1573
5bd022fe
PH
1574PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1575 Makefile that are specific to HP-UX.
1576
90e9ce59
PH
1577PH/18 If the "use_postmaster" option was set for a recipient callout together
1578 with the "random" option, the postmaster address was used as the MAIL
1579 FROM address for the random test, but not for the subsequent recipient
1580 test. It is now used for both.
1581
5ea81592
PH
1582PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1583 patch removes a few documentation additions to RFC 3028, because the
1584 latest draft now contains them. It adds the new en;ascii-case comparator
1585 and a new error check for 8bit text in MIME parts. Comparator and
1586 require names are now matched exactly. I enabled the subaddress
1587 extension, but it is not well tested yet (read: it works for me)."
1588
c6c2dc1d
PH
1589PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1590 rework some of the code of TK/09 above to avoid the hardwired use of
1591 "%lld" and "long long". Replaced the call to snprintf() with a call to
1592 string_vformat().
1593
fffffe4c
PH
1594PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1595 records point to non-existent hosts", "retry timeout exceeded", and
1596 "retry time not reached for any host after a long failure period".
ca02eafb 1597
9a26b6b2
PH
1598PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1599 experimental DomainKeys support:
1600
1601 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1602 (2) On an error such as an illegally used "control", the wrong name for
1603 the control was given.
1604
1605 These problems did NOT occur unless DomainKeys support was compiled.
1606
4aee0225
PH
1607PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1608
32d668a5
PH
1609PH/24 Added ${if match_ip condition.
1610
8187c3f3
PH
1611PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1612 databases so that it will be absolutely obvious if a crash occurs in the
1613 DB library. This is a regular occurrence (often caused by mis-matched
1614 db.h files).
1615
ff790e47 1616PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1617 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1618 picked up on a user's system that detects such things. There doesn't seem
1619 to be a gcc warning option for this - only an attribute that has to be
1620 put on the function's prototype. It seems that in Fedora Core 4 they have
1621 set this on a number of new functions. No doubt there will be more in due
1622 course.
ff790e47 1623
5417f6d1
PH
1624PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1625 specify a transport. However, if an address that was verified by such a
1626 router was the subject of a callout, Exim crashed because it tried to
1627 read the rcpt_include_affixes from the non-existent transport. Now it
1628 just assumes that the setting of that option is false. This bug was
1629 introduced by 4.51/PH/31.
1630
59cf8544
PH
1631PH/28 Changed -d+all to exclude +memory, because that information is very
1632 rarely of interest, but it makes the output a lot bigger. People tend to
1633 do -d+all out of habit.
1634
e7ad8a65
PH
1635PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1636 code in os-type was giving problems when libc.so lives in lib64, like on
1637 x86_64 Fedora Core.
1638
ade42478
PH
1639PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1640 aren't the modern standard, and it seems that some systems' include files
1641 don't always have them. Exim was already checking for some of the newer
1642 ones like T_AAAA, and defining it itself. I've added checks for all the
1643 record types that Exim uses.
1644
182ad5cf
PH
1645PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1646 not automatically generating a new one, as it is supposed to. This
1647 prevented TLS from working. If the file did exist, but contained invalid
1648 data, a new version was generated, as expected. It was only the case of a
1649 non-existent file that was broken.
1650
b0d9fc80
TK
1651TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1652 with a change in libdomainkeys > 0.64.
1653
1654TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1655 from DNS. If the selector record carries the flag, it now has
1656 precedence over the domain-wide flag.
1657
1658TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1659
47c7a64a
PH
1660PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1661 the use of a port name that isn't defined in /etc/services) occurred, the
1662 message was deferred as in a normal delivery, and thus remained on the
1663 spool, instead of being failed because of the mua_wrapper setting. This
1664 is now fixed, and I tidied up some of the mua_wrapper messages at the
1665 same time.
1666
a388bce4
SC
1667SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1668 the messages in a hash of arrays rather than using individual hashes.
1669 This is a bit cleaner and results in dramatic memory savings, albeit
1670 at a slight CPU cost.
1671
1672SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1673 as requested by Marc Sherman.
1674
1675SC/10 Eximstats: added histograms for user specified patterns as requested
1676 by Marc Sherman.
1677
0793e4ed
SC
1678SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1679
c58b88df
PH
1680PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1681 fopen() in the content-scanning modules that did not already have it.
1682
e7ad8a65 1683
7982096b
PH
1684Exim version 4.51
1685-----------------
1686
1a46a8c5
PH
1687TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1688 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1689
2f079f46 1690TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1691
1692TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1693
1694PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1695 to test Sieve filters that use "vacation".
1696
1697PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1698 that changes the way the GnuTLS parameters are stored in the cache file.
1699 The new format can be generated externally. For backward compatibility,
1700 if the data in the cache doesn't make sense, Exim assumes it has read an
1701 old-format file, and it generates new data and writes a new file. This
1702 means that you can't go back to an older release without removing the
1703 file.
1704
1705PH/03 A redirect router that has both "unseen" and "one_time" set does not
1706 work if there are any delivery delays because "one_time" forces the
1707 parent to be marked "delivered", so its unseen clone is never tried
1708 again. For this reason, Exim now forbids the simultaneous setting of
1709 these two options.
1710
1711PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1712 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1713 entry if you want to know the details. The fix, however, neglected to
1714 consider the case when local delivery batching is involved. The test for
1715 "previously delivered" was not happening when checking to see if an
1716 address could be batched with a previous (undelivered) one; under
1717 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1718 address.
1a46a8c5
PH
1719
1720PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1721 in its include files, and this causes problems building Exim.
1722
1723PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1724 header_syntax) but Exim was just ignoring anything given after a slash.
1725 In particular, this caused confusion with an attempt to use "verify =
1726 reverse_host_lookup/defer_ok". An error is now given when options are
1727 supplied for verify items that do not have them. (Maybe reverse_host_
1728 lookup should have a defer_ok option, but that's a different point.)
1729
1730PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1731 defined by RFC 821) to 2048, because there were problems with some AUTH
1732 commands, and RFC 1869 says the size should be increased for extended
1733 SMTP commands that take arguments.
1734
1735PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1736 Finch).
1737
1738PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1739 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1740
49c2d5ea
PH
1741PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1742 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1743 whatever). Otherwise the password may appear in the log. Following change
1744 PH/42 below, there is no longer a chance of it appearing in a bounce
1745 message.
49c2d5ea 1746
bf759a8b
PH
1747PH/11 Installed exipick version 20050225.0 from John Jetmore.
1748
83364d30
PH
1749PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1750 of its addresses was ever tried. (Bugzilla bug #2.)
1751
7999bbd7
PH
1752PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1753 the result incorrectly in the debug output. (It correctly added a newline
1754 to what was transported.)
1755
7dbf77c9
PH
1756TF/01 Added $received_time.
1757
74e0617f
PH
1758PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1759 commented out examples of how to interface to a virus scanner and to
1760 SpamAssassin. Also added commented examples of av_scanner and
1761 spamd_address settings.
1762
2f079f46
PH
1763PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1764 and controls are allowed in which ACLs. There were a couple of minor
1765 errors. Some of the entries in the conditions table (which is a table of
1766 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1767 negation of where the condition IS allowed.
1768
8c841523
PH
1769PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1770
7766a4f0
PH
1771PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1772 header file does not have a version number, so I've had to invent a new
1773 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1774 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1775 radiusclient), but it was contributed by a Radius user.
1776
8b417f2c
PH
1777PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1778 files or directories, for OpenSSL.
1779
901f42cb
PH
1780PH/19 When an Exim process that is running as root has to create an Exim log
1781 file, it does so in a subprocess that runs as exim:exim so as to get the
1782 ownership right at creation (otherwise, other Exim processes might see
1783 the file with the wrong ownership). There was no test for failure of this
1784 fork() call, which would lead to the process getting stuck as it waited
1785 for a non-existent subprocess. Forks do occasionally fail when resources
1786 run out. I reviewed all the other calls to fork(); they all seem to check
1787 for failure.
1788
f9b9210e
PH
1789PH/20 When checking for unexpected SMTP input at connect time (before writing
1790 the banner), Exim was not dealing correctly with a non-positive return
1791 from the read() function. If the client had disconnected by this time,
1792 the result was a log entry for a synchronization error with an empty
1793 string after "input=" when read() returned zero. If read() returned -1
1794 (an event I could not check), uninitialized data bytes were printed.
1795 There were reports of junk text (parts of files, etc) appearing after
1796 "input=".
1797
54cdb463
PH
1798PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1799
cf00dad6
PH
1800PH/22 Added support for macro redefinition, and (re)definition in between
1801 driver and ACL definitions.
1802
acb1b346
PH
1803PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1804 forgetting to use the resulting value; it was using the unexpanded value.
1805
c5ddb310
PH
1806PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1807 hadn't been configured. The fix is from Juergen Kreileder, who
1808 understands it better than I do:
1809
1810 "Here's what I see happening with three configured cyrus_sasl
1811 authenticators configured (plain, login, cram-md5):
1812
1813 On startup auth_cyrus_sasl_init() gets called for each of these.
1814 This means three calls to sasl_listmech() without a specified mech_list.
1815 => SASL tests which mechs of all available mechs actually work
1816 => three warnings about OTP not working
1817 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1818
1819 With the patch, sasl_listmech() also gets called three times. But now
1820 SASL's mech_list option is set to the server_mech specified in the the
1821 authenticator. Or in other words, the answer from sasl_listmech()
1822 gets limited to just the mech you're testing for (which is different
1823 for each call.)
1824 => the return list contains just 'plain' or 'login', 'cram-md5' or
1825 nothing depending on the value of ob->server_mech.
1826
1827 I've just tested the patch: Authentication still works fine,
1828 unavailable mechs specified in the exim configuration are still
1829 caught, and the auth.log warnings about OTP are gone."
1830
31619da6
PH
1831PH/25 When debugging is enabled, the contents of the command line are added
1832 to the debugging output, even when log_selector=+arguments is not
1833 specified.
1834
bebaf0fc
PH
1835PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1836 answer is "GNU", and only if the return is "GNU/something" is the answer
1837 "Linux".
1838
475fe28a
PH
1839PH/27 $acl_verify_message is now set immediately after the failure of a
1840 verification in an ACL, and so is available in subsequent modifiers. In
1841 particular, the message can be preserved by coding like this:
1842
1843 warn !verify = sender
1844 set acl_m0 = $acl_verify_message
1845
1846 Previously, $acl_verify_message was set only while expanding "message"
1847 and "log_message" when a very denied access.
1848
7e8bec7a
PH
1849PH/28 Modified OS/os.c-Linux with
1850
1851 -#ifndef OS_LOAD_AVERAGE
1852 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1853
1854 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1855 nomenclature these days.)
1856
e4a89c47
PH
1857PH/29 Installed patch from the Sieve maintainer that adds the options
1858 sieve_useraddress and sieve_subaddress to the redirect router.
1859
5ca2a9a1
PH
1860PH/30 In these circumstances:
1861 . Two addresses routed to the same list of hosts;
1862 . First host does not offer TLS;
1863 . First host accepts first address;
1864 . First host gives temporary error to second address;
1865 . Second host offers TLS and a TLS session is established;
1866 . Second host accepts second address.
1867 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1868 and peerdn, if requested) that were in fact used only for the second
1869 address.
7e8bec7a 1870
c688b954
PH
1871PH/31 When doing a callout as part of verifying an address, Exim was not paying
1872 attention to any local part prefix or suffix that was matched by the
1873 router that accepted the address. It now behaves in the same way as it
1874 does for delivery: the affixes are removed from the local part unless
1875 rcpt_include_affixes is set on the transport.
1876
fed77020
PH
1877PH/32 Add the sender address, as F=<...>, to the log line when logging a
1878 timeout during the DATA phase of an incoming message.
1879
7fe1560f
PH
1880PH/33 Sieve envelope tests were broken for match types other than :is. I have
1881 applied a patch sanctioned by the Sieve maintainer.
c688b954 1882
ebb6e6d5
PH
1883PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1884 the uid or gid is negative. A case of a negative gid caused this to be
1885 noticed. The fix allows for either to be negative.
1886
9c4e8f60
PH
1887PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1888 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1889 overlooked.
1890
1891PH/36 The change PH/12 above was broken. Fixed it.
1892
d7174846
PH
1893PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1894 the grounds that routing the same address twice would always produce the
1895 same answer. This might have been true once, but it is certainly no
1896 longer true now. Routing a child address may depend on the previous
1897 routing that produced that child. Some complicated redirection strategies
1898 went wrong when messages had multiple recipients, and made Exim's
1899 behaviour dependent on the order in which the addresses were given.
1900
1901 I have moved the duplicate checking until after the routing is complete.
1902 Exim scans the addresses that are assigned to local and remote
1903 transports, and removes any duplicates. This means that more work will be
1904 done, as duplicates will always all be routed, but duplicates are
1905 presumably rare, so I don't expect this is of any significance.
1906
1907 For deliveries to pipes, files, and autoreplies, the duplicate checking
1908 still happens during the routing process, since they are not going to be
1909 routed further.
1910
cfe75fc3
PH
1911PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1912 It corrects a timeout issue with spamd. This is Ian's comment: "The
1913 background is that sometimes spamd either never reads data from a
1914 connection it has accepted, or it never writes response data. The exiscan
1915 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1916 blindly assumes that writes won't block so it may never time out."
1917
be22d70e
PH
1918PH/39 Allow G after quota size as well as K and M.
1919
0612b098
PH
1920PH/40 The value set for $authenticated_id in an authenticator may not contain
1921 binary zeroes or newlines because the value is written to log lines and
1922 to spool files. There was no check on this. Now the value is run through
1923 the string_printing() function so that such characters are converted to
1924 printable escape sequences.
1925
2e0c1448
PH
1926PH/41 $message_linecount is a new variable that contains the total number of
1927 lines in the message. Compare $body_linecount, which is the count for the
1928 body only.
1929
447d236c
PH
1930PH/42 Exim no longer gives details of delivery errors for specific addresses in
1931 bounce and delay warning messages, except in certain special cases, which
1932 are as follows:
1933
1934 (a) An SMTP error message from a remote host;
1935 (b) A message specified in a :fail: redirection;
1936 (c) A message specified in a "fail" command in a system filter;
1937 (d) A message specified in a FAIL return from the queryprogram router;
1938 (e) A message specified by the cannot_route_message router option.
1939
1940 In these cases only, Exim does include the error details in bounce and
1941 warning messages. There are also a few cases where bland messages such
1942 as "unrouteable address" or "local delivery error" are given.
1943
d20976dc
PH
1944PH/43 $value is now also set for the "else" part of a ${run expansion.
1945
f656d135
PH
1946PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1947 being worked on, but at least Exim now implements the latest version to
1948 play with."
1949
2e2a30b4
PH
1950PH/45 In a pipe transport, although a timeout while waiting for the pipe
1951 process to complete was treated as a delivery failure, a timeout while
1952 writing the message to the pipe was logged, but erroneously treated as a
1953 successful delivery. Such timeouts include transport filter timeouts. For
1954 consistency with the overall process timeout, these timeouts are now
1955 treated as errors, giving rise to delivery failures by default. However,
1956 there is now a new Boolean option for the pipe transport called
1957 timeout_defer, which, if set TRUE, converts the failures into defers for
1958 both kinds of timeout. A transport filter timeout is now identified in
1959 the log output.
1960
9176e9f0
PH
1961PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1962 systems where "make" and "gmake" are different, calling "gmake" at top
1963 level broke things. I've arranged for the value of $(MAKE) to be passed
1964 from the Makefile to this script so that it can call the same version of
1965 "make".
1966
7982096b 1967
bbe902f0
PH
1968A note about Exim versions 4.44 and 4.50
1969----------------------------------------
1970
1971Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1972changes of various kinds. As a consequence, a big documentation update was
1973needed. This delayed the release for rather longer than seemed good, especially
1974in the light of a couple of (minor) security issues. Therefore, the changes
1975that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1976release. So 4.44 and 4.50 are in effect two different branches that both start
1977from 4.43.
1978
1979I have left the 4.50 change log unchanged; it contains all the changes since
19804.43. The change log for 4.44 is below; many of its items are identical to
1981those for 4.50. This seems to be the most sensible way to preserve the
1982historical information.
1983
1984
f7b63901 1985Exim version 4.50
495ae4b0
PH
1986-----------------
1987
5fe762f6
PH
1988 1. Minor wording change to the doc/README.SIEVE file.
1989
139059f6 1990 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1991 computation of the current number of files was incorrect.
495ae4b0 1992
7086e875
PH
1993 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1994 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1995 place.
1996
35af9f61
PH
1997 4. Give more explanation in the error message when the command for a transport
1998 filter fails to execute.
1999
b668c215
PH
2000 5. There are several places where Exim runs a non-Exim command in a
2001 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2002 was being done only for the command run by the queryprogram router. It is
2003 now done for all such subprocesses. The other cases are: ${run, transport
2004 filters, and the commands run by the lmtp and pipe transports.
2005
a494b1e1
PH
2006 6. Added CONFIGURE_GROUP build-time option.
2007
2008 7. Some older OS have a limit of 256 on the maximum number of file
2009 descriptors. Exim was using setrlimit() to set 1000 as a large value
2010 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2011 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2012
c5fcb476
PH
2013 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2014 was an oversight, and furthermore, ever since the addition of extra
2015 controls (e.g. 4.43/32), the checks on when to allow different forms of
2016 "control" were broken. There should now be diagnostics for all cases when a
2017 control that does not make sense is encountered.
2018
69358f02
PH
2019 9. Added the /retain_sender option to "control=submission".
2020
5be20824
PH
202110. $recipients is now available in the predata ACL (oversight).
2022
eb2c0248
PH
202311. Tidy the search cache before the fork to do a delivery from a message
2024 received from the command line. Otherwise the child will trigger a lookup
2025 failure and thereby defer the delivery if it tries to use (for example) a
2026 cached ldap connection that the parent has called unbind on.
2027
2a3eea10
PH
202812. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2029 of $address_data from the recipient verification was clobbered by the
2030 sender verification.
2031
203213. The value of address_data from a sender verification is now available in
2033 $sender_address_data in subsequent conditions in the ACL statement.
2034
23c7ff99
PH
203514. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2036
4deaf07d
PH
203715. Added a new option "connect=<time>" to callout options, to set a different
2038 connection timeout.
2039
926e1192
PH
204016. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2041 was its contents. (It was OK if the option was not defined at all.)
2042
650edc6f
PH
204317. A "Completed" log line is now written for messages that are removed from
2044 the spool by the -Mrm option.
2045
2c7db3f5
PH
204618. New variables $sender_verify_failure and $recipient_verify_failure contain
2047 information about exactly what failed.
2048
3d235903
PH
204919. Added -dd to debug only the daemon process.
2050
7c7ad977
PH
205120. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2052 handles timeouts, both on the server side and network timeouts. Renamed the
2053 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2054
981756db
PH
205521. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2056 It is now set to "smtps".
2057
d4eb88df
PH
205822. $host_address is now set to the target address during the checking of
2059 ignore_target_hosts.
2060
206123. When checking ignore_target_hosts for an ipliteral router, no host name was
2062 being passed; this would have caused $sender_host_name to have been used if
2063 matching the list had actually called for a host name (not very likely,
2064 since this list is usually IP addresses). A host name is now passed as
2065 "[x.x.x.x]".
2066
7d468ab8
PH
206724. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2068 code that specifies a non-restarting handler (typically sigaction() in
2069 modern systems) in an attempt to fix a rare and obscure crash bug.
2070
207125. Narrowed the window for a race in the daemon that could cause it to ignore
2072 SIGCHLD signals. This is not a major problem, because they are used only to
2073 wake it up if nothing else does.
2074
62c0818f
PH
207526. A malformed maildirsize file could cause Exim to calculate negative values
2076 for the mailbox size or file count. Odd effects could occur as a result.
2077 The maildirsize information is now recalculated if the size or filecount
2078 end up negative.
2079
26034054
PH
208027. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2081 support for a long time. Removed HAVE_SYS_VFS_H.
2082
af66f652
PH
208328. Installed the latest version of exipick from John Jetmore.
2084
90af77f4
PH
208529. In an address list, if the pattern was not a regular expression, an empty
2086 subject address (from a bounce message) matched only if the pattern was an
2087 empty string. Non-empty patterns were not even tested. This was the wrong
2088 because it is perfectly reasonable to use an empty address as part of a
2089 database query. An empty address is now tested by patterns that are
2090 lookups. However, all the other forms of pattern expect the subject to
2091 contain a local part and a domain, and therefore, for them, an empty
2092 address still always fails if the pattern is not itself empty.
2093
d8ef3577
PH
209430. Exim went into a mad DNS loop when attempting to do a callout where the
2095 host was specified on an smtp transport, and looking it up yielded more
2096 than one IP address.
2097
5cb8cbc6
PH
209831. Re-factored the code for checking spool and log partition space into a
2099 function that finds that data and another that does the check. The former
2100 is then used to implement four new variables: $spool_space, $log_space,
2101 $spool_inodes, and $log_inodes.
2102
14702f5b
PH
210332. The RFC2047 encoding function was originally intended for short strings
2104 such as real names; it was not keeping to the 75-character limit for
2105 encoded words that the RFC imposes. It now respects the limit, and
2106 generates multiple encoded words if necessary. To be on the safe side, I
2107 have increased the buffer size for the ${rfc2047: expansion operator from
2108 1024 to 2048 bytes.
2109
063b1e99
PH
211033. It is now permitted to omit both strings after an "if" condition; if the
2111 condition is true, the result is "true". As before, when the second string
2112 is omitted, a false condition yields an empty string. This makes it less
2113 cumbersome to write custom ACL and router conditions.
2114
652e1b65
PH
211534. Failure to deliver a bounce message always caused it to be frozen, even if
2116 there was an errors_to setting on the router. The errors_to setting is now
2117 respected.
2118
6f0c9a4f
PH
211935. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2120 canonical form (fully expanded) before being placed in
2121 $sender_host_address.
2122
33397d19
PH
212336. The table in the code that translates DNS record types into text (T_A to
2124 "A" for instance) was missing entries for NS and CNAME. It is just possible
2125 that this could have caused confusion if both these types were looked up
2126 for the same domain, because the text type is used as part of Exim's
2127 per-process caching. But the chance of anyone hitting this buglet seems
2128 very small.
2129
7bb56e1f
PH
213037. The dnsdb lookup has been extended in a number of ways.
2131
2132 (1) There is a new type, "zns", which walks up the domain tree until it
2133 finds some nameserver records. It should be used with care.
2134
ea3bc19b
PH
2135 (2) There is a new type, "mxh", which is like "mx" except that it returns
2136 just the host names, not the priorities.
2137
2138 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2139 looked up. The behaviour when one of the lookups defers can be
2140 controlled by a keyword.
7bb56e1f 2141
ea3bc19b 2142 (4) It is now possible to specify the separator character for use when
7bb56e1f 2143 multiple records are returned.
33397d19 2144
0bcb2a0e
PH
214538. The dnslists ACL condition has been extended: it is now possible to supply
2146 a list of IP addresses and/or domains to be looked up in a particular DNS
2147 domain.
2148
2ac0e484
PH
214939. Added log_selector=+queue_time_overall.
2150
4e1fde53
PH
215140. When running the queue in the test harness, wait just a tad after forking a
2152 delivery process, to get repeatability of debugging output.
2153
de365ded
PH
215441. Include certificate and key file names in error message when GnuTLS fails
2155 to set them up, because the GnuTLS error message doesn't include the name
2156 of the failing file when there is a problem reading it.
2157
f05da2e8
PH
215842. Allow both -bf and -bF in the same test run.
2159
d6453af2
PH
216043. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2161
f7b63901
PH
216244. The "Exiscan patch" is now merged into the mainline Exim source.
2163
216445. Sometimes the final signoff response after QUIT could fail to get
2165 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2166 < 0 before doing a fflush(). This bug looks as though it goes back to the
2167 introduction of TLS in release 3.20, but "sometimes" must have been rare
2168 because the tests only now provoked it.
2169
a444213a
PH
217046. Reset the locale to "C" after calling embedded Perl, in case it was changed
2171 (this can affect the format of dates).
2172
0ec020ea
PH
217347. exim_tidydb, when checking for the continued existence of a message for
2174 which it has found a message-specific retry record, was not finding
2175 messages that were in split spool directories. Consequently, it was
2176 deleting retry records that should have stayed in existence.
2177
b1206957
PH
217848. Steve fixed some bugs in eximstats.
2179
218049. The SPA authentication driver was not abandoning authentication and moving
2181 on to the next authenticator when an expansion was forced to fail,
2182 contradicting the general specification for all authenticators. Instead it
2183 was generating a temporary error. It now behaves as specified.
2184
26dd5a95
PH
218550. The default ordering of permitted cipher suites for GnuTLS was pessimal
2186 (the order specifies the preference for clients). The order is now AES256,
2187 AES128, 3DES, ARCFOUR128.
2188
343b2385
PH
218951. Small patch to Sieve code - explicitly set From: when generating an
2190 autoreply.
2191
1c5466b9
PH
219252. Exim crashed if a remote delivery caused a very long error message to be
2193 recorded - for instance if somebody sent an entire SpamAssassin report back
2194 as a large number of 550 error lines. This bug was coincidentally fixed by
2195 increasing the size of one of Exim's internal buffers (big_buffer) that
2196 happened as part of the Exiscan merge. However, to be on the safe side, I
2197 have made the code more robust (and fixed the comments that describe what
2198 is going on).
2199
55ee9ee3
PH
220053. Now that there can be additional text after "Completed" in log lines (if
2201 the queue_time_overall log selector is set), a one-byte patch to exigrep
2202 was needed to allow it to recognize "Completed" as not the last thing in
2203 the line.
2204
d38f8232
PH
220554. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2206 patch that reportedly fixes this has been added. I am not expert enough to
2207 create a test for it. This is what the patch creator wrote:
2208
2209 "I found a little strange behaviour of ldap code when working with
2210 Windows 2003 AD Domain, where users was placed in more than one
2211 Organization Units. When I tried to give exim partial DN, the exit code
2212 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2213 But simultaneously result of request was absolutely normal ldap result,
2214 so I produce this patch..."
2215
3295e65b
PH
2216 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2217 REFERENCE, so I have modified the code to exclude the patch when that macro
2218 is not defined.
2219
7102e136
PH
222055. Some experimental protocols are using DNS PTR records for new purposes. The
2221 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2222 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2223 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2224 CAN-2005-0021
7102e136 2225
3ca0ba97
PH
222656. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2227
c2bcbe20
PH
222857. Double the size of the debug message buffer (to 2048) so that more of very
2229 long debug lines gets shown.
2230
18ce445d
PH
223158. The exicyclog utility now does better if the number of log files to keep
2232 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2233
1f5b4c3d
PH
223459. Two changes related to the smtp_active_hostname option:
2235
2236 (1) $smtp_active_hostname is now available as a variable.
2237 (2) The default for smtp_banner uses $smtp_active_hostname instead
2238 of $primary_hostname.
2239
b975ba52
PH
224060. The host_aton() function is supposed to be passed a string that is known
2241 to be a valid IP address. However, in the case of IPv6 addresses, it was
2242 not checking this. This is a hostage to fortune. Exim now panics and dies
2243 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2244 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2245 components; fortuitously, this particular loophole had already been fixed
2246 by change 4.50/55 above.
2247
2248 If there are any other similar loopholes, the new check in host_aton()
2249 itself should stop them being exploited. The report I received stated that
2250 data on the command line could provoke the exploit when Exim was running as
2251 exim, but did not say which command line option was involved. All I could
2252 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2253 running as the user.
ea3a6f44 2254 CAN-2005-0021
85b87bc2
PH
2255
225661. There was a buffer overflow vulnerability in the SPA authentication code
2257 (which came originally from the Samba project). I have added a test to the
2258 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2259 CAN-2005-0022
b975ba52 2260
17ffcae7
PH
226162. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2262 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2263
d95f9fdb
PH
226463. The daemon start-up calls getloadavg() while still root for those OS that
2265 need the first call to be done as root, but it missed one case: when
2266 deliver_queue_load_max is set with deliver_drop_privilege. This is
2267 necessary for the benefit of the queue runner, because there is no re-exec
2268 when deliver_drop_privilege is set.
2269
86b8287f
PH
227064. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2271 This has been fixed.
2272
60dc5e56
PH
227365. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2274 was in use, was not putting the data itself into the right store pool;
2275 consequently, it could be overwritten for a subsequent message in the same
2276 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2277 the caching.)
2278
533244af
PH
227966. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2280
a5a28604
PH
228167. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2282 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2283 the function were treating the return as a boolean value, which happened to
2284 work because 0=false and not-0=true, but is not correct code.
2285
7e634d24
PH
228668. The host_aton() function was not handling scoped IPv6 addresses (those
2287 with, for example, "%eth0" on the end) correctly.
2288
3e11c26b
PH
228969. Fixed some compiler warnings in acl.c for the bitmaps specified with
2290 negated items (that is, ~something) in unsigned ints. Some compilers
2291 apparently mutter when there is no cast.
2292
6729cf78
PH
229370. If an address verification called from an ACL failed, and did not produce a
2294 user-specific message (i.e. there was only a "system" message), nothing was
2295 put in $acl_verify_message. In this situation, it now puts the system
2296 message there.
2297
00f00ca5
PH
229871. Change 4.23/11 added synchronization checking at the start of an SMTP
2299 session; change 4.31/43 added the unwanted input to the log line - except
2300 that it did not do this in the start of session case. It now does.
2301
c9bdd01c
PH
230272. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2303 This is wrong and can cause the other end to generate a synchronization
2304 error if it is another Exim or anything else that does the synchronization
2305 check. A QUIT command is no longer sent after a timeout.
2306
d43194df
PH
230773. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2308 during host lookups.
2309
fe5b5d0b
PH
231074. The defer_ok option of callout verification was not working if it was used
2311 when verifying addresses in header lines, that is, for this case:
2312
2313 verify = header_sender/callout=defer_ok
2314
76a2d7ba
PH
231575. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2316 those file descriptors could be used for SMTP connections. If anything
2317 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2318 could be sent to the SMTP client, causing chaos. The daemon now opens
2319 stdin, stdout, and stderr to /dev/null when it puts itself into the
2320 background.
2321
232276. Arrange for output from Perl's "warn" command to be written to Exim's main
2323 log by default. The user can override this with suitable Perl magic.
2324
04f7d5b9
PH
232577. The use of log_message on a "discard" ACL verb, which is supposed to add to
2326 the log message when discard triggers, was not working for the DATA ACL or
2327 for the non-SMTP ACL.
2328
bc60667e
PH
232978. Error message wording change in sieve.c.
2330
bb6e88ff
PH
233179. If smtp_accept_max_per_host was set, the number of connections could be
2332 restricted to fewer than expected, because the daemon was trying to set up
2333 a new connection before checking whether the processes handling previous
2334 connections had finished. The check for completed processes is now done
2335 earlier. On busy systems, this bug wouldn't be noticed because something
2336 else would have woken the daemon, and it would have reaped the completed
2337 process earlier.
2338
1e70f85b
PH
233980. If a message was submitted locally by a user whose login name contained one
2340 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2341 It caused a spool format error. I have fixed the spool reading code. A
2342 related problem was that the "from" clause in the Received: line became
2343 illegal because of the space(s). It is now covered by ${quote_local_part.
2344
234581. Included the latest eximstats from Steve (adds average sizes to HTML Top
2346 tables).
2347
4e01f9d6
PH
234882. Updated OS/Makefile-AIX as per message from Mike Meredith.
2349
1ee1cef2
PH
235083. Patch from Sieve maintainer to fix unterminated string problem in
2351 "vacation" handling.
2352
6e2b4ccc
PH
235384. Some minor changes to the Linux configuration files to help with other
2354 OS variants using glibc.
2355
8e669ac1
PH
235685. One more patch for Sieve to update vacation handling to latest spec.
2357
495ae4b0 2358
bbe902f0
PH
2359----------------------------------------------------
2360See the note above about the 4.44 and 4.50 releases.
2361----------------------------------------------------
2362
2363
2364Exim version 4.44
2365-----------------
2366
2367 1. Change 4.43/35 introduced a bug that caused file counts to be
2368 incorrectly computed when quota_filecount was set in an appendfile
2369 transport
2370
2371 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2372 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2373 place.
2374
2375 3. Give more explanation in the error message when the command for a transport
2376 filter fails to execute.
2377
2378 4. There are several places where Exim runs a non-Exim command in a
2379 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2380 was being done only for the command run by the queryprogram router. It is
2381 now done for all such subprocesses. The other cases are: ${run, transport
2382 filters, and the commands run by the lmtp and pipe transports.
2383
2384 5. Some older OS have a limit of 256 on the maximum number of file
2385 descriptors. Exim was using setrlimit() to set 1000 as a large value
2386 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2387 systems. I've change it so that if it can't get 1000, it tries for 256.
2388
2389 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2390 was an oversight, and furthermore, ever since the addition of extra
2391 controls (e.g. 4.43/32), the checks on when to allow different forms of
2392 "control" were broken. There should now be diagnostics for all cases when a
2393 control that does not make sense is encountered.
2394
2395 7. $recipients is now available in the predata ACL (oversight).
2396
2397 8. Tidy the search cache before the fork to do a delivery from a message
2398 received from the command line. Otherwise the child will trigger a lookup
2399 failure and thereby defer the delivery if it tries to use (for example) a
2400 cached ldap connection that the parent has called unbind on.
2401
2402 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2403 of $address_data from the recipient verification was clobbered by the
2404 sender verification.
2405
240610. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2407 was its contents. (It was OK if the option was not defined at all.)
2408
240911. A "Completed" log line is now written for messages that are removed from
2410 the spool by the -Mrm option.
2411
241212. $host_address is now set to the target address during the checking of
2413 ignore_target_hosts.
2414
241513. When checking ignore_target_hosts for an ipliteral router, no host name was
2416 being passed; this would have caused $sender_host_name to have been used if
2417 matching the list had actually called for a host name (not very likely,
2418 since this list is usually IP addresses). A host name is now passed as
2419 "[x.x.x.x]".
2420
242114. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2422 code that specifies a non-restarting handler (typically sigaction() in
2423 modern systems) in an attempt to fix a rare and obscure crash bug.
2424
242515. Narrowed the window for a race in the daemon that could cause it to ignore
2426 SIGCHLD signals. This is not a major problem, because they are used only to
2427 wake it up if nothing else does.
2428
242916. A malformed maildirsize file could cause Exim to calculate negative values
2430 for the mailbox size or file count. Odd effects could occur as a result.
2431 The maildirsize information is now recalculated if the size or filecount
2432 end up negative.
2433
243417. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2435 support for a long time. Removed HAVE_SYS_VFS_H.
2436
ea3a6f44 243718. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2438
243919. Allow an empty sender to be matched against a lookup in an address list.
2440 Previously the only cases considered were a regular expression, or an
2441 empty pattern.
2442
244320. Exim went into a mad DNS lookup loop when doing a callout where the
2444 host was specified on the transport, if the DNS lookup yielded more than
2445 one IP address.
2446
ea3a6f44
NM
244721. The RFC2047 encoding function was originally intended for short strings
2448 such as real names; it was not keeping to the 75-character limit for
2449 encoded words that the RFC imposes. It now respects the limit, and
2450 generates multiple encoded words if necessary. To be on the safe side, I
2451 have increased the buffer size for the ${rfc2047: expansion operator from
2452 1024 to 2048 bytes.
bbe902f0 2453
ea3a6f44
NM
245422. Failure to deliver a bounce message always caused it to be frozen, even if
2455 there was an errors_to setting on the router. The errors_to setting is now
2456 respected.
bbe902f0
PH
2457
245823. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2459 canonical form (fully expanded) before being placed in
2460 $sender_host_address.
2461
246224. Updated eximstats to version 1.33
2463
ea3a6f44
NM
246425. Include certificate and key file names in error message when GnuTLS fails
2465 to set them up, because the GnuTLS error message doesn't include the name
2466 of the failing file when there is a problem reading it.
bbe902f0
PH
2467
246826. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2469 As per change 25.
bbe902f0 2470
ea3a6f44
NM
247127. Reset the locale to "C" after calling embedded Perl, in case it was changed
2472 (this can affect the format of dates).
bbe902f0 2473
ea3a6f44
NM
247428. exim_tidydb, when checking for the continued existence of a message for
2475 which it has found a message-specific retry record, was not finding
2476 messages that were in split spool directories. Consequently, it was
2477 deleting retry records that should have stayed in existence.
bbe902f0
PH
2478
247929. eximstats updated to version 1.35
2480 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2481 1.35 - bugfix such that pie charts by volume are generated correctly
2482
ea3a6f44
NM
248330. The SPA authentication driver was not abandoning authentication and moving
2484 on to the next authenticator when an expansion was forced to fail,
2485 contradicting the general specification for all authenticators. Instead it
2486 was generating a temporary error. It now behaves as specified.
bbe902f0 2487
ea3a6f44
NM
248831. The default ordering of permitted cipher suites for GnuTLS was pessimal
2489 (the order specifies the preference for clients). The order is now AES256,
2490 AES128, 3DES, ARCFOUR128.
bbe902f0 2491
ea3a6f44
NM
249231. Small patch to Sieve code - explicitly set From: when generating an
2493 autoreply.
bbe902f0 2494
ea3a6f44
NM
249532. Exim crashed if a remote delivery caused a very long error message to be
2496 recorded - for instance if somebody sent an entire SpamAssassin report back
2497 as a large number of 550 error lines. This bug was coincidentally fixed by
2498 increasing the size of one of Exim's internal buffers (big_buffer) that
2499 happened as part of the Exiscan merge. However, to be on the safe side, I
2500 have made the code more robust (and fixed the comments that describe what
2501 is going on).
bbe902f0 2502
ea3a6f44
NM
250333. Some experimental protocols are using DNS PTR records for new purposes. The
2504 keys for these records are domain names, not reversed IP addresses. The
2505 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2506 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2507 CAN-2005-0021
2508
ea3a6f44
NM
250934. The host_aton() function is supposed to be passed a string that is known
2510 to be a valid IP address. However, in the case of IPv6 addresses, it was
2511 not checking this. This is a hostage to fortune. Exim now panics and dies
2512 if the condition is not met. A case was found where this could be provoked
2513 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2514 components; fortuitously, this particular loophole had already been fixed
2515 by change 4.50/55 or 4.44/33 above.
2516
2517 If there are any other similar loopholes, the new check in host_aton()
2518 itself should stop them being exploited. The report I received stated that
2519 data on the command line could provoke the exploit when Exim was running as
2520 exim, but did not say which command line option was involved. All I could
2521 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2522 running as the user.
bbe902f0
PH
2523 CAN-2005-0021
2524
ea3a6f44
NM
252535. There was a buffer overflow vulnerability in the SPA authentication code
2526 (which came originally from the Samba project). I have added a test to the
2527 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2528 CAN-2005-0022
2529
ea3a6f44
NM
253036. The daemon start-up calls getloadavg() while still root for those OS that
2531 need the first call to be done as root, but it missed one case: when
2532 deliver_queue_load_max is set with deliver_drop_privilege. This is
2533 necessary for the benefit of the queue runner, because there is no re-exec
2534 when deliver_drop_privilege is set.
bbe902f0 2535
ea3a6f44
NM
253637. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2537 was in use, was not putting the data itself into the right store pool;
2538 consequently, it could be overwritten for a subsequent message in the same
2539 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2540 the caching.)
bbe902f0 2541
ea3a6f44
NM
254238. Sometimes the final signoff response after QUIT could fail to get
2543 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2544 < 0 before doing a fflush(). This bug looks as though it goes back to the
2545 introduction of TLS in release 3.20, but "sometimes" must have been rare
2546 because the tests only now provoked it.
bbe902f0
PH
2547
2548
495ae4b0
PH
2549Exim version 4.43
2550-----------------
2551
2552 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2553 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2554 Now it returns an integer. A number of calls were still expecting a T/F
2555 return. Fortuitously, in all cases, the tests worked in OK situations,
2556 which is the norm. However, things would have gone wrong on any write
2557 failures on the smtp file descriptor. This function is used when sending
2558 messages over SMTP and also when doing verify callouts.
2559
2560 2. When Exim is called to do synchronous delivery of a locally submitted
2561 message (the -odf or -odi options), it no longer closes stderr before doing
2562 the delivery.
2563
2564 3. Implemented the mua_wrapper option.
2565
2566 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2567
2568 5. Implemented the functions header_remove(), header_testname(),
2569 header_add_at_position(), and receive_remove_recipient(), and exported them
2570 to local_scan().
2571
2572 6. If an ACL "warn" statement specified the addition of headers, Exim already
2573 inserted X-ACL-Warn: at the start if there was no header name. However, it
2574 was not making this test for the second and subsequent header lines if
2575 there were newlines in the string. This meant that an invalid header could
2576 be inserted if Exim was badly configured.
2577
2578 7. Allow an ACL "warn" statement to add header lines at the start or after all
2579 the Received: headers, as well as at the end.
2580
2581 8. Added the rcpt_4xx retry error code.
2582
2583 9. Added postmaster_mailfrom=xxx to callout verification option.
2584
258510. Added mailfrom=xxxx to the callout verification option, for verify=
2586 header_sender only.
2587
258811. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2589 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2590
259112. Inserted some casts to stop certain compilers warning when using pointer
2592 differences as field lengths or precisions in printf-type calls (mostly
2593 affecting debugging statements).
2594
259513. Added optional readline() support for -be (dynamically loaded).
2596
259714. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2598 same clock tick as a message's arrival, so that its received time was the
2599 same as the "first fail" time on the retry record, and that message
2600 remained on the queue past the ultimate address timeout, every queue runner
2601 would try a delivery (because it was past the ultimate address timeout) but
2602 after another failure, the ultimate address timeout, which should have then
2603 bounced the address, did not kick in. This was a "< instead of <=" error;
2604 in most cases the first failure would have been in the next clock tick
2605 after the received time, and all would be well.
2606
260715. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2608 being recognized when the domain list was tested by the match_domain
2609 condition in an expansion string.
2610
261116. Added the ${str2b64: operator.
2612
261317. Exim was always calling setrlimit() to set a large limit for the number of
2614 processes, without checking whether the existing limit was already
2615 adequate. (It did check for the limit on file descriptors.) Furthermore,
2616 errors from getrlimit() and setrlimit() were being ignored. Now they are
2617 logged to the main and panic logs, but Exim does carry on, to try to do its
2618 job under whatever limits there are.
2619
262018. Imported PCRE 5.0.
2621
262219. Trivial typo in log message " temporarily refused connection" (the leading
2623 space).
2624
262520. If the log selector return_path_on_delivery was set and an address was
2626 redirected to /dev/null, the delivery process crashed because it assumed
2627 that a return path would always be set for a "successful" delivery. In this
2628 case, the whole delivery is bypassed as an optimization, and therefore no
2629 return path is set.
2630
263121. Internal re-arrangement: the function for sending a challenge and reading
2632 a response while authentication was assuming a zero-terminated challenge
2633 string. It's now changed to take a pointer and a length, to allow for
2634 binary data in such strings.
2635
263622. Added the cyrus_sasl authenticator (code supplied by MBM).
2637
263823. Exim was not respecting finduser_retries when seeking the login of the
2639 uid under which it was called; it was always trying 10 times. (The default
2640 setting of finduser_retries is zero.) Also, it was sleeping after the final
2641 failure, which is pointless.
2642
264324. Implemented tls_on_connect_ports.
2644
264525. Implemented acl_smtp_predata.
2646
264726. If the domain in control=submission is set empty, Exim assumes that the
2648 authenticated id is a complete email address when it generates From: or
2649 Sender: header lines.
2650
265127. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2652 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2653 chown and chgrp in /bin and hostname in /usr/bin.
2654
265528. Exim was keeping the "process log" file open after each use, just as it
2656 does for the main log. This opens the possibility of it remaining open for
2657 long periods when the USR1 signal hits a daemon. Occasional processlog
2658 errors were reported, that could have been caused by this. Anyway, it seems
2659 much more sensible not to leave this file open at all, so that is what now
2660 happens.
2661
266229. The long-running daemon process does not normally write to the log once it
2663 has entered its main loop, and it closes the log before doing so. This is
2664 so that log files can straightforwardly be renamed and moved. However,
2665 there are a couple of unusual error situations where the daemon does write
2666 log entries, and I had neglected to close the log afterwards.
2667
266830. The text of an SMTP error response that was received during a remote
2669 delivery was being truncated at 512 bytes. This is too short for some of
2670 the long messages that one sometimes sees. I've increased the limit to
2671 1024.
2672
267331. It is now possible to make retry rules that apply only when a message has a
2674 specific sender, in particular, an empty sender.
2675
267632. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2677 it possible to be selective about when SMTP synchronization is enforced.
2678
267933. Added "control = caseful_local_part" and "control = "caselower_local_part".
2680
268132. Implemented hosts_connection_nolog.
2682
268333. Added an ACL for QUIT.
2684
268534. Setting "delay_warning=" to disable warnings was not working; it gave a
2686 syntax error.
2687
268835. Added mailbox_size and mailbox_filecount to appendfile.
2689
269036. Added control = no_multiline_responses to ACLs.
2691
269237. There was a bug in the logic of the code that waits for the clock to tick
2693 in the case where the clock went backwards by a substantial amount such
2694 that the microsecond fraction of "now" was more than the microsecond
2695 fraction of "then" (but the whole seconds number was less).
2696
269738. Added support for the libradius Radius client library this is found on
2698 FreeBSD (previously only the radiusclient library was supported).
2699
2700
2701Exim version 4.42
2702-----------------
2703
2704 1. When certain lookups returned multiple values in the form name=value, the
2705 quoting of the values was not always being done properly. Specifically:
2706 (a) If the value started with a double quote, but contained no whitespace,
2707 it was not quoted.
2708 (b) If the value contained whitespace other than a space character (i.e.
2709 tabs or newlines or carriage returns) it was not quoted.
2710 This fix has been applied to the mysql and pgsql lookups by writing a
2711 separate quoting function and calling it from the lookup code. The fix
2712 should probably also be applied to nisplus, ibase and oracle lookups, but
2713 since I cannot test any of those, I have not disturbed their existing code.
2714
2715 2. A hit in the callout cache for a specific address caused a log line with no
2716 reason for rejecting RCPT. Now it says "Previous (cached) callout
2717 verification failure".
2718
2719 3. There was an off-by-one bug in the queryprogram router. An over-long
2720 return line was truncated at 256 instead of 255 characters, thereby
2721 overflowing its buffer with the terminating zero. As well as fixing this, I
2722 have increased the buffer size to 1024 (and made a note to document this).
2723
2724 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2725 when Exim is waiting for an SMTP response from a remote server, Exim
2726 restarts its select() call on the socket, thereby resetting its timeout.
2727 This is not a problem when such interrupts are rare. Somebody set up a cron
2728 job to run exiwhat every 2 minutes, which is less than the normal select()
2729 timeout (5 or 10 minutes). This meant that the select() timeout never
2730 kicked in because it was always reset. I have fixed this by comparing the
2731 time when an interrupt arrives with the time at the start of the first call
2732 to select(). If more time than the timeout has elapsed, the interrupt is
2733 treated as a timeout.
2734
2735 5. Some internal re-factoring in preparation for the addition of Sieve
2736 extensions (by MH). In particular, the "personal" test is moved to a
2737 separate function, and given an option for scanning Cc: and Bcc: (which is
2738 not set for Exim filters).
2739
2740 6. When Exim created an email address using the login of the caller as the
2741 local part (e.g. when creating a From: or Sender: header line), it was not
2742 quoting the local part when it contained special characters such as @.
2743
2744 7. Installed new OpenBSD configuration files.
2745
2746 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2747 try to make them clearer.
2748
2749 9. Callout options, other than the timeout value, were being ignored when
2750 verifying sender addresses in header lines. For example, when using
2751
2752 verify = header_sender/callout=no_cache
2753
2754 the cache was (incorrectly) being used.
2755
275610. Added a missing instance of ${EXE} to the exim_install script; this affects
2757 only the Cygwin environment.
2758
275911. When return_path_on_delivery was set as a log selector, if different remote
2760 addresses in the same message used different return paths and parallel
2761 remote delivery occurred, the wrong values would sometimes be logged.
2762 (Whenever a remote delivery process finished, the return path value from
2763 the most recently started remote delivery process was logged.)
2764
276512. RFC 3848 specifies standard names for the "with" phrase in Received: header
2766 lines when AUTH and/or TLS are in use. This is the "received protocol"
2767 field. Exim used to use "asmtp" for authenticated SMTP, without any
2768 indication (in the protocol name) for TLS use. Now it follows the RFC and
2769 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2770 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2771 names appear in log lines as well as in Received: header lines.
2772
277313. Installed MH's patches for Sieve to add the "copy" and "vacation"
2774 extensions, and comparison tests, and to fix some bugs.
2775
277614. Changes to the "personal" filter test:
2777
2778 (1) The test was buggy in that it was just doing the equivalent of
2779 "contains" tests on header lines. For example, if a user's address was
2780 anne@some.where, the "personal" test would incorrectly be true for
2781
2782 To: susanne@some.where
2783
2784 This test is now done by extracting each address from the header in turn,
2785 and checking the entire address. Other tests that are part of "personal"
2786 are now done using regular expressions (for example, to check local parts
2787 of addresses in From: header lines).
2788
2789 (2) The list of non-personal local parts in From: addresses has been
2790 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2791 taken from the Sieve specification recommendations.
2792
2793 (3) If the message contains any header line starting with "List-" it is
2794 treated as non-personal.
2795
2796 (4) The test for "circular" in the Subject: header line has been removed
2797 because it now seems ill-conceived.
2798
279915. Minor typos in src/EDITME comments corrected.
2800
280116. Installed latest exipick from John Jetmore.
2802
280317. If headers_add on a router specified a text string that was too long for
2804 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2805 of string_sprintf() is now avoided.
2806
280718. $message_body_size was not set (it was always zero) when running the DATA
2808 ACL and the local_scan() function.
2809
281019. For the "mail" command in an Exim filter, no default was being set for
2811 the once_repeat time, causing a random time value to be used if "once" was
2812 specified. (If the value happened to be <= 0, no repeat happened.) The
2813 default is now 0s, meaning "never repeat". The "vacation" command was OK
2814 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2815 (I found it when inspecting the code).
2816
281720. There is now an overall timeout for performing a callout verification. It
2818 defaults to 4 times the callout timeout, which applies to individual SMTP
2819 commands during the callout. The overall timeout applies when there is more
2820 than one host that can be tried. The timeout is checked before trying the
2821 next host. This prevents very long delays if there are a large number of
2822 hosts and all are timing out (e.g. when the network connections are timing
2823 out). The value of the overall timeout can be changed by specifying an
2824 additional sub-option for "callout", called "maxwait". For example:
2825
2826 verify = sender/callout=5s,maxwait=20s
2827
282821. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2829 to the end before writing, but this should make it even safer).
2830
283122. Exim was forgetting that it had advertised PIPELINING for the second and
2832 subsequent messages on an SMTP connection. It was also not resetting its
2833 memory on STARTTLS and an internal HELO.
2834
283523. When Exim logs an SMTP synchronization error within a session, it now
2836 records whether PIPELINING has been advertised or not.
2837
283824. Added 3 instances of "(long int)" casts to time_t variables that were being
2839 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2840 rather than long int.
2841
284225. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2843
284426. Added the never_mail option to autoreply.
2845
2846
2847Exim version 4.41
2848-----------------
2849
2850 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2851 crash if the getsockname() call failed; this can happen if a connection is
2852 closed very soon after it is established. The problem was simply in the
2853 order in which certain operations were done, causing Exim to try to write
2854 to the SMTP stream before it had set up the file descriptor. The bug has
2855 been fixed by making things happen in the correct order.
2856
2857
2858Exim version 4.40
2859-----------------
2860
2861 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2862 before the connection was closed, thus losing the rejection response.
2863
2864 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2865 some early Solaris releases, but causes trouble in current releases where
2866 socklen_t is defined.
2867
2868 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2869 always exist.
2870
2871 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2872 configured.
2873
2874 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2875 that releasing the top of it at the end releases what was used for sub-
2876 expansions (unless the block got too big). However, discard this block if
2877 the first thing is a variable or header, so that we can use its block when
2878 it is dynamic (useful for very large $message_headers, for example).
2879
2880 6. Lookups now cache *every* query, not just the most recent. A new, separate
2881 store pool is used for this. It can be recovered when all lookup caches are
2882 flushed. Lookups now release memory at the end of their result strings.
2883 This has involved some general refactoring of the lookup sources.
2884
2885 7. Some code has been added to the store_xxx() functions to reduce the amount
2886 of flapping under certain conditions.
2887
2888 8. log_incoming_interface used to affect only the <= reception log lines. Now
2889 it causes the local interface and port to be added to several more SMTP log
2890 lines, for example "SMTP connection from", and rejection lines.
2891
2892 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2893
289410. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2895
289611. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2897 could be overwritten at the end of the current message (or the start of a
2898 new message if it was set in a HELO ACL). The value is now preserved for
2899 the duration of the SMTP connection.
2900
290112. If a transport had a headers_rewrite setting, and a matching header line
2902 contained an unqualified address, that address was qualified, even if it
2903 did not match any rewriting rules. The underlying bug was that the values
2904 of the flags that permit the existence of unqualified sender and recipient
2905 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2906 non-local messages, and by -bnq for local messages) were not being
2907 preserved with the message after it was received.
2908
290913. When Exim was logging an SMTP synchronization error, it could sometimes log
2910 "next input=" as part of the text comprising the host identity instead of
2911 the correct text. The code was using the same buffer for two different
2912 strings. However, depending on which order the printing function evaluated
2913 its arguments, the bug did not always show up. Under Linux, for example, my
2914 test suite worked just fine.
2915
291614. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2917 doesn't work with some older versions of Perl. It has been changed to "my",
2918 which in any case is probably the better facility to use.
2919
292015. A really picky compiler found some instances of statements for creating
2921 error messages that either had too many or two few arguments for the format
2922 string.
2923
292416. The size of the buffer for calls to the DNS resolver has been increased
2925 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2926 for addresses that have a lot of PTR records. This alleviates a problem; it
2927 does not fully solve it.
2928
292917. A dnsdb lookup for PTR records that receives more data than will fit in the
2930 buffer now truncates the list and logs the incident, which is the same
2931 action as happens when Exim is looking up a host name and its aliases.
2932 Previously in this situation something unpredictable would happen;
2933 sometimes it was "internal error: store_reset failed".
2934
293518. If a server dropped the connection unexpectedly when an Exim client was
2936 using GnuTLS and trying to read a response, the client delivery process
2937 crashed while trying to generate an error log message.
2938
293919. If a "warn" verb in an ACL added multiple headers to a message in a single
2940 string, for example:
2941
2942 warn message = H1: something\nH2: something
2943
2944 the text was added as a single header line from Exim's point of view
2945 though it ended up OK in the delivered message. However, searching for the
2946 second and subsequent header lines using $h_h2: did not work. This has been
2947 fixed. Similarly, if a system filter added multiple headers in this way,
2948 the routers could not see them.
2949
295020. Expanded the error message when iplsearch is called with an invalid key to
2951 suggest using net-iplsearch in a host list.
2952
295321. When running tests using -bh, any delays imposed by "delay" modifiers in
2954 ACLs are no longer actually imposed (and a message to that effect is
2955 output).
2956
295722. If a "gecos" field in a passwd entry contained escaped characters, in
2958 particular, if it contained a \" sequence, Exim got it wrong when building
2959 a From: or a Sender: header from that name. A second bug also caused
2960 incorrect handling when an unquoted " was present following a character
2961 that needed quoting.
2962
296323. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2964 was not being matched caselessly.
2965
296624. Arranged for all hyphens in the exim.8 source to be escaped with
2967 backslashes.
2968
296925. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2970 properly. Recipient callout cache records were still being keyed to include
2971 the sender, even when use_sender was set false. This led to far more
2972 callouts that were necessary. The sender is no longer included in the key
2973 when use_sender is false.
2974
297526. Added "control = submission" modifier to ACLs.
2976
297727. Added the ${base62d: operator to decode base 62 numbers.
2978
297928. dnsdb lookups can now access SRV records.
2980
298129. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2982 the configuration file.
2983
298430. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2985 (-v) mode. This makes the output for a verbose queue run more intelligible.
2986
298731. Added a use_postmaster feature to recipient callouts.
2988
298932. Added the $body_zerocount variable, containing the number of binary zero
2990 bytes in the message body.
2991
299233. The time of last modification of the "new" subdirectory is now used as the
2993 "mailbox time last read" when there is a quota error for a maildir
2994 delivery.
2995
299634. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2997
299835. Added +ignore_unknown as a special item in host lists.
2999
300036. Code for decoding IPv6 addresses in host lists is now included, even if
3001 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3002 address was recognized as an IP address, but was then not correctly decoded
3003 into binary, causing unexpected and incorrect effects when compared with
3004 another IP address.
3005
3006
3007Exim version 4.34
3008-----------------
3009
3010 1. Very minor rewording of debugging text in manualroute to say "list of
3011 hosts" instead of "hostlist".
3012
3013 2. If verify=header_syntax was set, and a header line with an unqualified
3014 address (no domain) and a large number of spaces between the end of the
3015 name and the colon was received, the reception process suffered a buffer
3016 overflow, and (when I tested it) crashed. This was caused by some obsolete
3017 code that should have been removed. The fix is to remove it!
3018
3019 3. When running in the test harness, delay a bit after writing a bounce
3020 message to get a bit more predictability in the log output.
3021
3022 4. Added a call to search_tidyup() just before forking a reception process. In
3023 theory, someone could use a lookup in the expansion of smtp_accept_max_
3024 per_host which, without the tidyup, could leave open a database connection.
3025
3026 5. Added the variables $recipient_data and $sender_data which get set from a
3027 lookup success in an ACL "recipients" or "senders" condition, or a router
3028 "senders" option, similar to $domain_data and $local_part_data.
3029
3030 6. Moved the writing of debug_print from before to after the "senders" test
3031 for routers.
3032
3033 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3034 problems for message scanning, either using a data ACL, or using
3035 local_scan() because the Received: header was not generated till after they
3036 were called (in order to set the time as the time of reception completion).
3037 I have revised the way this works. The header is now generated after the
3038 body is received, but before the ACL or local_scan() are called. After they
3039 are run, the timestamp in the header is updated.
3040
3041
3042Exim version 4.33
3043-----------------
3044
3045 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3046 before starting a queue runner without re-exec. This happened only when
3047 deliver_drop_privilege was set or when the Exim user was set to root. The
3048 effect of the bug was that timeouts during subsequent deliveries caused
3049 crashes instead of being properly handled. The handler is now left at its
3050 default (and expected) setting.
3051
3052 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3053 message, again when deliver_drop_privilege is set or Exim is run as root.
3054 The bug described in (1) was not present in this case, but the tidying up
3055 of the other signals was missing. I have made the two cases consistent.
3056
3057 3. The ignore_target_hosts setting on a manualroute router was being ignored
3058 for hosts that were looked up using the /MX notation.
3059
3060 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3061 in domain lists.
3062
3063 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3064 operated on the sender address. After changing the $sender_address to <>
3065 for the sender address verify, Exim was re-instated it as the original
3066 (before rewriting) address, but remembering that it had rewritten it, so it
3067 wasn't rewriting it again. This bug also had the effect of breaking the
3068 sender address verification caching when the sender address was rewritten.
3069
3070 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3071 This has been changed so that if the ip literal address matches
3072 ignore_target_hosts, the router declines.
3073
3074 7. Added expansion conditions match_domain, match_address, and match_local_
3075 part (NOT match_host).
3076
3077 8. The placeholder for the Received: header didn't have a length field set.
3078
3079 9. Added code to Exim itself and to exim_lock to test for a specific race
3080 condition that could lead to file corruption when using MBX delivery. The
3081 issue is with the lockfile that is created in /tmp. If this file is removed
3082 after a process has opened it but before that process has acquired a lock,
3083 there is the potential for a second process to recreate the file and also
3084 acquire a lock. This could lead to two Exim processes writing to the file
3085 at the same time. The added code performs the same test as UW imapd; it
3086 checks after acquiring the lock that its file descriptor still refers to
3087 the same named file.
3088
308910. The buffer for building added header lines was of fixed size, 8192 bytes.
3090 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3091 when Exim is built.
3092
309311. Added the smtp_active_hostname option. If used, this will typically be made
3094 to depend on the incoming interface address. Because $interface_address is
3095 not set up until the daemon has forked a reception process, error responses
3096 that can happen earlier (such as "too many connections") no longer contain
3097 a host name.
3098
309912. If an expansion in a condition on a "warn" statement fails because a lookup
3100 defers, the "warn" statement is abandoned, and the next ACL statement is
3101 processed. Previously this caused the whole ACL to be aborted.
3102
310313. Added the iplsearch lookup type.
3104
310514. Added ident_timeout as a log selector.
3106
310715. Added tls_certificate_verified as a log selector.
3108
310916. Added a global option tls_require_ciphers (compare the smtp transport
3110 option of the same name). This controls incoming TLS connections.
3111
311217. I finally figured out how to make tls_require_ciphers do a similar thing
3113 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3114 before starting the TLS session.
3115
311618. Tabs are now shown as \t in -bP output.
3117
311819. If the log selector return_path_on_delivery was set, Exim crashed when
3119 bouncing a message because it had too many Received: header lines.
3120
312120. If two routers both had headers_remove settings, and the first one included
3122 a superfluous trailing colon, the final name in the first list and the
3123 first name in the second list were incorrectly joined into one item (with a
3124 colon in the middle).
3125
3126
3127Exim version 4.32
3128-----------------
3129
3130 1. Added -C and -D options to the exinext utility, mainly to make it easier
3131 to include in the automated testing, but these could be helpful when
3132 multiple configurations are in use.
3133
3134 2. The exinext utility was not formatting the output nicely when there was
3135 an alternate port involved in the retry record key, nor when there was a
3136 message id as well (for retries that were specific to a specific message
3137 and a specific host). It was also confused by IPv6 addresses, because of
3138 the additional colons they contain. I have fixed the IPv4 problem, and
3139 patched it up to do a reasonable job for IPv6.
3140
3141 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3142 delivery, the log line now contains "pipelined" if PIPELINING was used.
3143
3144 4. An SMTP transport process used to panic and die if the bind() call to set
3145 an explicit outgoing interface failed. This has been changed; it is now
3146 treated in the same way as a connect() failure.
3147
3148 5. A reference to $sender_host_name in the part of a conditional expansion
3149 that was being skipped was still causing a DNS lookup. This no longer
3150 occurs.
3151
3152 6. The def: expansion condition was not recognizing references to header lines
3153 that used bh_ and bheader_.
3154
3155 7. Added the _cache feature to named lists.
3156
3157 8. The code for checking quota_filecount in the appendfile transport was
3158 allowing one more file than it should have been.
3159
3160 9. For compatibility with Sendmail, the command line option
3161
3162 -prval:sval
3163
3164 is equivalent to
3165
3166 -oMr rval -oMs sval
3167
3168 and sets the incoming protocol and host name (for trusted callers). The
3169 host name and its colon can be omitted when only the protocol is to be set.
3170 Note the Exim already has two private options, -pd and -ps, that refer to
3171 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3172 "s", but I don't think that's a major issue.
3173
317410. A number of refactoring changes to the code, none of which should affect
3175 Exim's behaviour:
3176
3177 (a) The number of logging options was getting close to filling up the
3178 32-bit word that was used as a bit map. I have split them into two classes:
3179 those that are passed in the argument to log_write(), and those that are
3180 only ever tested independently outside of that function. These are now in
3181 separate 32-bit words, so there is plenty of room for expansion again.
3182 There is no change in the user interface or the logging behaviour.
3183
3184 (b) When building, for example, log lines, the code previously used a
3185 macro that called string_cat() twice, in order to add two strings. This is
3186 not really sufficiently general. Furthermore, there was one instance where
3187 it was actually wrong because one of the argument was used twice, and in
3188 one call a function was used. (As it happened, calling the function twice
3189 did not affect the overall behaviour.) The macro has been replaced by a
3190 function that can join an arbitrary number of extra strings onto a growing
3191 string.
3192
3193 (c) The code for expansion conditions now uses a table and a binary chop
3194 instead of a serial search (which was left over from when there were very
3195 few conditions). Also, it now recognizes conditions like "pam" even when
3196 the relevant support is not compiled in: a suitably worded error message is
3197 given if an attempt is made to use such a condition.
3198
319911. Added ${time_interval:xxxxx}.
3200
320112. A bug was causing one of the ddress fields not to be passed back correctly
3202 from remote delivery subprocesses. The field in question was not being
3203 subsequently used, so this caused to problems in practice.
3204
320513. Added new log selectors queue_time and deliver_time.
3206
320714. Might have fixed a bug in maildirsizefile handling that threw up
3208 "unexpected character" debug warnings, and recalculated the data
3209 unnecessarily. In any case, I expanded the warning message to give more
3210 information.
3211
321215. Added the message "Restricted characters in address" to the statements in
3213 the default ACL that block characters like @ and % in local parts.
3214
321516. Change 71 for release 4.31 proved to be much less benign that I imagined.
3216 Three changes have been made:
3217
3218 (a) There was a serious bug; a negative response to MAIL caused the whole
3219 recipient domain to be cached as invalid, thereby blocking all messages
3220 to all local parts at the same domain, from all senders. This bug has
3221 been fixed. The domain is no longer cached after a negative response to
3222 MAIL if the sender used is not empty.
3223
3224 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3225 been restored.
3226
3227 (c) A new callout option, "use_sender" has been added for people who want
3228 the modified behaviour.
3229
3230
3231Exim version 4.31
3232-----------------
3233
3234 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3235 Larry Rosenman.
3236
3237 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3238 indeed breaks things for older releases.
3239
3240 3. Added additional logging to the case where there is a problem reading data
3241 from a filter that is running in a subprocess using a pipe, in order to
3242 try to track down a specific problem.
3243
3244 4. Testing facility fudge: when running in the test harness and attempting
3245 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3246 getting "No route to host". Convert this to a timeout.
3247
3248 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3249 warning.
3250
3251 6. Some OS don't have socklen_t but use size_t instead. This affects the
3252 fifth argument of getsockopt() amongst other things. This is now
3253 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3254 can be set for individual OS. I have set it for SunOS5, OSF1, and
3255 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3256 some earlier ones do not.
3257
3258 7. Change 4.30/15 was not doing the test caselessly.
3259
3260 8. The standard form for an IPv6 address literal was being rejected by address
3261 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3262 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3263 this, as well as the form without the "IPv6" on the front (but only when
3264 address literals are enabled, of course).
3265
3266 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3267
326810. Exim crashed if a message with an empty sender address specified by -f
3269 encountered a router with an errors_to setting. This could be provoked only
3270 by a command such as
3271
3272 exim -f "" ...
3273
3274 where an empty string was supplied; "<>" did not hit this bug.
3275
327611. Installed PCRE release 4.5.
3277
327812. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3279 remained set. It is now erased.
3280
328113. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3282 times from message ids (which are base 36 rather than the normal 62).
3283
328414. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3285 were being counted as actual protocol errors, and logged if the log
3286 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3287 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3288 and DATA following a set of rejected RCPTs do not count as protocol errors.
3289 In other words, Exim assumes they were pipelined, though this may not
3290 actually be the case. Of course, in all cases the client gets an
3291 appropriate error code.
3292
329315. If a lookup fails in an ACL condition, a message about the failure may
3294 be available; it is used if testing the ACL cannot continue, because most
3295 such messages specify what the cause of the deferral is. However, some
3296 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3297 that caused an old message to be retained and used if a later statement
3298 caused a defer, replacing the real cause of the deferral.
3299
330016. If an IP address had so many PTR records that the DNS lookup buffer
3301 was not large enough to hold them, Exim could crash while trying to process
3302 the truncated data. It now detects and logs this case.
3303
330417. Further to 4.21/58, another change has been made: if (and only if) the
3305 first line of a message (the first header line) ends with CRLF, a bare LF
3306 in a subsequent header line has a space inserted after it, so as not to
3307 terminate the header.
3308
330918. Refactoring: tidied an ugly bit of code in appendfile that copied data
3310 unnecessarily, used atoi() instead of strtol(), and didn't check the
3311 termination when getting file sizes from file names by regex.
3312
331319. Completely re-implemented the support for maildirsize files, in the light
3314 of a number of problems with the previous contributed implementation
3315 (4.30/29). In particular:
3316
3317 . If the quota is zero, the maildirsize file is maintained, but no quota is
3318 imposed.
3319
3320 . If the maildir directory does not exist, it is created before any attempt
3321 to write a maildirsize file.
3322
3323 . The quota value in the file is just a cache; if the quota is changed in
3324 the transport, the new value overrides.
3325
3326 . A regular expression is available for excluding directories from the
3327 count.
3328
332920. The autoreply transport checks the characters in options that define the
3330 message's headers; it allows continued headers, but it was checking with
3331 isspace() after an embedded newline instead of explicitly looking for a
3332 space or a tab.
3333
333421. If all the "regular" hosts to which an address was routed had passed their
3335 expiry times, and had not reached their retry times, the address was
3336 bounced, even if fallback hosts were defined. Now Exim should go on to try
3337 the fallback hosts.
3338
333922. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3340 equivalent code in the SMTP transport. Some hosts send humungous responses
3341 to HELO/EHLO, more than 1024 it seems.
3342
334323. Refactoring: code in filter.c used (void *) for "any old type" but this
3344 gives compiler warnings in some environments. I've now done it "properly",
3345 using a union.
3346
334724. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3348 (because of problems with the built-in one) was declared to return uschar *
3349 instead of char *, causing compiler failure.
3350
335125. Fixed a file descriptor leak when processing alias/forward files.
3352
335326. Fixed a minor format string issue in dbfn.c.
3354
335527. Typo in exim.c: ("dmbnz" for "dbmnz").
3356
335728. If a filter file refered to $h_xxx or $message_headers, and the headers
3358 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3359 become corrupted.
3360
336129. When a sender address is verified, it is cached, to save repeating the test
3362 when there is more than one recipient in a message. However, when the
3363 verification involves a callout, it is possible for different callout
3364 options to be set for different recipients. It is too complicated to keep
3365 track of this in the cache, so now Exim always runs a verification when a
3366 callout is required, relying on the callout cache for the optimization.
3367 The overhead is duplication of the address routing, but this should not be
3368 too great.
3369
337030. Fixed a bug in callout caching. If a RCPT command caused the sender address
3371 to be verified with callout=postmaster, and the main callout worked but the
3372 postmaster check failed, the verification correctly failed. However, if a
3373 subsequent RCPT command asked for sender verification *without* the
3374 postmaster check, incorrect caching caused this verification also to fail,
3375 incorrectly.
3376
337731. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3378 it was not caching the DNS options (qualify_single, search_parents) that
3379 were used when the lookup failed. A subsequent lookup with different
3380 options therefore always gave the same answer, though there were cases
3381 where it should not have. (Example: a "domains = !$mx_any" option on a
3382 dnslookup router: the "domains" option is always processed without any
3383 widening, but the router might have qualify_single set.) Now Exim uses the
3384 cached value only when the same options are set.
3385
338632. Added John Jetmore's "exipick" utility to the distribution.
3387
338833. GnuTLS: When an attempt to start a TLS session fails for any reason other
3389 than a timeout (e.g. a certificate is required, and is not provided), an
3390 Exim server now closes the connection immediately. Previously it waited for
3391 the client to close - but if the client is SSL, it seems that they each
3392 wait for each other, leading to a delay before one of them times out.
3393
339434: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3395 maintained 0.8.x compatibility because I don't think many are using it, and
3396 it is clearly obsolete.
3397
339835. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3399 transport.
3400
340136. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3402 client certificate was expired. A simple patch fixes this, though I don't
3403 understand the full logic of why the verify callback is called multiple
3404 times.
3405
340637. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3407 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3408 which causes problems with some clients (such as the Certicom SSL Plus
3409 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3410 disables the coutermeasure allowing Eudora to connect."
3411
341238. Exim was not checking that a write() to a log file succeeded. This could
3413 lead to Bad Things if a log got too big, in particular if it hit a file
3414 size limit. Exim now panics and dies if it cannot write to a log file, just
3415 as it does if it cannot open a log file.
3416
341739. Modified OS/Makefile-Linux so that it now contains
3418
3419 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3420
3421 The two -D definitions ensure that Exim is compiled with large file
3422 support, which makes it possible to handle log files that are bigger than
3423 2^31.
3424
342540. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3426 instance) a domain was checked against a named list that involved a lookup,
3427 causing $domain_data to be set, then another domain was checked against the
3428 same list, then the first domain was re-checked, the value of $domain_data
3429 after the final check could be wrong. In particular, if the second check
3430 failed, it could be set empty. This bug probably also applied to
3431 $localpart_data.
3432
343341. The strip_trailing_dot option was not being applied to the address given
3434 with the -f command-line option.
3435
343642. The code for reading a message's header from the spool was incrementing
3437 $received_count, but never initializing it. This meant that the value was
3438 incorrect (doubled) while delivering a message in the same process in which
3439 it was received. In the most common configuration of Exim, this never
3440 happens - a fresh exec is done - but it can happen when
3441 deliver_drop_privilege is set.
3442
344343. When Exim logs an SMTP synchronization error - client data sent too soon -
3444 it now includes up to 150 characters of the unexpected data in the log
3445 line.
3446
344744. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3448 and building data strings. The size of both of these buffers was 10 000
3449 bytes - far larger than anybody would *ever* want, thought I. Needless to
3450 say, somebody hit the limit. I have increased the maximum line length to
3451 20 000 and the maximum data length of concatenated lines to 100 000. I have
3452 also fixed two bugs, because there was no checking on these buffers. Tsk,
3453 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3454 buffer is too small.
3455
345645. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3457 lsearch lookups. Now it does.
3458
345946. When parsing a route_list item in a manualroute router, a fixed-length
3460 buffer was used for the list of hosts. I made this 1024 bytes long,
3461 thinking that nobody would ever have a list of hosts that long. Wrong.
3462 Somebody had a whole pile of complicated expansion conditions, and the
3463 string was silently truncated, leading to an expansion error. It turns out
3464 that it is easier to change to an unlimited length (owing to other changes
3465 that have happened since this code was originally written) than to build
3466 structure for giving a limitation error. The length of the item that
3467 expands into the list of hosts is now unlimited.
3468
346947. The lsearch lookup could not handle data where the length of text line was
3470 more than 4095 characters. Such lines were truncated, leading to shortened
3471 data being returned. It should now handle lines of any length.
3472
347348. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3474 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3475 ACL").
3476
347749. Cosmetic tidy to scripts like exicyclog that are generated by globally
3478 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3479 no longer happens in comment lines. A list of replacements is now placed
3480 at the head of all of the source files, except those whose only change is
3481 to replace PERL_COMMAND in the very first #! line.
3482
348350. Replaced the slow insertion sort in queue.c, for sorting the list of
3484 messages on the queue, with a bottom-up merge sort, using code contributed
3485 by Michael Haardt. This should make operations like -bp somewhat faster on
3486 large queues. It won't affect queue runners, except when queue_run_in_order
3487 is set.
3488
348951. Installed eximstats 1.31 in the distribution.
3490
349152. Added support for SRV lookups to the dnslookup router.
3492
349353. If an ACL referred to $message_body or $message_body_end, the value was not
3494 reset for any messages that followed in the same SMTP session.
3495
349654. The store-handling optimization for building very long strings was not
3497 differentiating between the different store pools. I don't think this
3498 actually made any difference in practice, but I've tidied it.
3499
350055. While running the routers to verify a sender address, $sender_address
3501 was still set to the sender address. This is wrong, because when routing to
3502 send a bounce to the sender, it would be empty. Therefore, I have changed
3503 it so that, while verifying a sender address, $sender_address is set to <>.
3504 (There is no change to what happens when verifying a recipient address.)
3505
350656. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3507 target A or AAAA records (if not already returned) without resetting the
3508 qualify_single or search_parents options of the DNS resolver. These are
3509 inappropriate in this case because the targets of MX and SRV records must
3510 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3511 target that, when qualified, matched something in the local domain. These
3512 two options are now turned off when doing these lookups.
3513
351457. It seems that at least some releases of Reiserfs (which does not have the
3515 concept of a fixed number of inodes) returns zero and not -1 for the
3516 number of available inodes. This interacted badly with check_spool_inodes,
3517 which assumed that -1 was the "no such thing" setting. What I have done is
3518 to check that the total number of inodes is greater than zero before doing
3519 the test of how many are available.
3520
352158. When a "warn" ACL statement has a log_message modifier, the message is
3522 remembered, and not repeated. This is to avoid a lot of repetition when a
3523 message has many recipients that cause the same warning to be written.
3524 Howewer, Exim was preserving the list of already written lines for an
3525 entire SMTP session, which doesn't seem right. The memory is now reset if a
3526 new message is started.
3527
352859. The "rewrite" debugging flag was not showing the result of rewriting in the
3529 debugging output unless log_rewrite was also set.
3530
353160. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3532 of (int)(handle) when we know that handle contains (void *)(-1).
3533
353461. The Exim daemon panic-logs an error return when it closes the incoming
3535 connection. However "connection reset by peer" seems to be common, and
3536 isn't really an error worthy of noting specially, so that particular error
3537 is no long logged.
3538
353962. When Exim is trying to find all the local interfaces, it used to panic and
3540 die if the ioctl to get the interface flags failed. However, it seems that
3541 on at least one OS (Solaris 9) it is possible to have an interface that is
3542 included in the list of interfaces, but for which you get a failure error
3543 for this call. This happens when the interface is not "plumbed" into a
3544 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3545 failure of the "get flags" call assumes that the interface is down.
3546
354763. Added a ${eval10: operator, which assumes all numbers are decimal. This
3548 makes life easier for people who are doing arithmetic on fields extracted
3549 from dates, where you often get leading zeros that should not be
3550 interpreted as octal.
3551
355264. Added qualify_domain to the redirect router, to override the global
3553 setting.
3554
355565. If a pathologically long header line contained very many addresses (the
3556 report of this problem mentioned 10 000) and each of them was rewritten,
3557 Exim could use up a very large amount of memory. (It kept on making new
3558 copies of the header line as it rewrote, and never released the old ones.)
3559 At the expense of a bit more processing, the header rewriting function has
3560 been changed so that it no longer eats memory in this way.
3561
356266. The generation of the Received: header has been moved from the time that a
3563 message starts to be received, to the time that it finishes. The timestamp
3564 in the Received: header should now be very close to that of the <= log
3565 line. There are two side-effects of this change:
3566
3567 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3568 logged header lines no longer include the local Received: line, because
3569 it has not yet been created. The same applies to a copy of the message
3570 that is returned to a non-SMTP sender when a message is rejected.
3571
3572 (b) When a filter file is tested using -bf, no additional Received: header
3573 is added to the test message. After some thought, I decided that this
3574 is a bug fix.
3575
3576 This change does not affect the value of $received_for. It is still set
3577 after address rewriting, but before local_scan() is called.
3578
357967. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3580
358168. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3582 gave an unhelpful panic error message, and a defer error. I have managed to
3583 change this behaviour so that it now rejects any supplied certificate,
3584 which seems right, as the list of acceptable certificates is empty.
3585
358669. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3587 gave an unhelpful defer error. I have not managed to make this reject any