Flush SMTP before callout (unless control=no_callout_flush).
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
4c590bd1 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.471 2007/02/06 12:19:27 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
PH
29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
PH
32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b01dd148
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
9c57cbc0
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
PH
76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
PH
78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
4c590bd1
PH
80PH/18 Flush SMTP output before performing a callout, unless control =
81 no_callout_flush is set.
82
b4ed4da0 83
5dd1517f
PH
84Exim version 4.66
85-----------------
86
87PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
88 fixed by 4.65/MH/01 (is this a record?) are fixed:
89
90 (i) An empty string was always treated as zero by the numeric comparison
91 operators. This behaviour has been restored.
92
93 (ii) It is documented that the numeric comparison operators always treat
94 their arguments as decimal numbers. This was broken in that numbers
95 starting with 0 were being interpreted as octal.
96
97 While fixing these problems I realized that there was another issue that
98 hadn't been noticed. Values of message_size_limit (both the global option
99 and the transport option) were treated as octal if they started with 0.
100 The documentation was vague. These values are now always treated as
101 decimal, and I will make that clear in the documentation.
102
103
93cfa765
TK
104Exim version 4.65
105-----------------
106
107TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
108 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
109 versions. (#438)
110
d6066548
MH
111MH/01 Don't check that the operands of numeric comparison operators are
112 integers when their expansion is in "skipping" mode (fixes bug
113 introduced by 4.64-PH/07).
114
4362ff0d
PH
115PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
116 child addresses, Exim now panics and dies. Previously, because the count
117 is held in a short int, deliveries were likely to be lost. As such a
118 large number of recipients for a single message is ridiculous
119 (performance will be very, very poor), I have chosen to impose a limit
120 rather than extend the field.
121
93cfa765 122
944e9e9c
TF
123Exim version 4.64
124-----------------
aa41d2de 125
21d74bd9
TK
126TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
127 leftover -K file (the existence of which was triggered by #402).
128 While we were at it, introduced process PID as part of the -K
129 filename. This should rule out race conditions when creating
130 these files.
131
132TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
133 processing considerably. Previous code took too long for large mails,
134 triggering a timeout which in turn triggers #401.
135
136TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
137 in the DK code in transports.c. sendfile() is not really portable,
138 hence the _LINUX specificness.
944e9e9c
TF
139
140TF/01 In the add_headers option to the mail command in an Exim filter,
141 there was a bug that Exim would claim a syntax error in any
142 header after the first one which had an odd number of characters
143 in the field name.
144
2b1c6e3a
PH
145PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
146 callout verification, Exim cached a "reject" for the entire domain. This
147 is correct for most verifications, but it is not correct for a recipient
148 verification with use_sender or use_postmaster set, because in that case
149 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
150 case of MAIL FROM:<> rejection from other early rejections (e.g.
151 rejection of HELO). When verifying a recipient using a non-null MAIL
152 address, the cache is ignored if it shows MAIL FROM:<> rejection.
153 Whatever the result of the callout, the value of the domain cache is
154 left unchanged (for any other kind of callout, getting as far as trying
155 RCPT means that the domain itself is ok).
156
1f872c80
PH
157PH/02 Tidied a number of unused variable and signed/unsigned warnings that
158 gcc 4.1.1 threw up.
159
160PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
161 manifest itself as EPIPE rather than ECONNECT. When tidying away a
162 session, the daemon ignores ECONNECT errors and logs others; it now
163 ignores EPIPE as well.
164
d203e649
PH
165PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
166 (quoted-printable decoding).
167
cc2ed8f7 168PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 169 later the small subsequent patch to fix an introduced bug.
f951fd57 170
ddfcd446
PH
171PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
172
d45b1de8
PH
173PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
174
175PH/08 An error is now given if message_size_limit is specified negative.
176
38a0a95f 177PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 178 to be given (somewhat) arbitrary names.
38a0a95f 179
a2405d83
JJ
180JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
181 in 4.64-PH/09.
182
183JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
184 miscellaneous code fixes
185
6ea85e9a
PH
186PH/10 Added the log_reject_target ACL modifier to specify where to log
187 rejections.
188
26da7e20
PH
189PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
190 hostname. This is wrong, because it relates to the incoming message (and
191 probably the interface on which it is arriving) and not to the outgoing
192 callout (which could be using a different interface). This has been
193 changed to use the value of the helo_data option from the smtp transport
194 instead - this is what is used when a message is actually being sent. If
195 there is no remote transport (possible with a router that sets up host
196 addresses), $smtp_active_hostname is used.
6ea85e9a 197
14aa5a05 198PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 199 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
200 (a) The code assumed that strncpy() returns a negative number on buffer
201 overflow, which isn't the case. Replaced with Exim's string_format()
202 function.
203 (b) There were several signed/unsigned issues. I just did the minimum
204 hacking in of casts. There is scope for a larger refactoring.
205 (c) The code used strcasecmp() which is not a standard C function.
206 Replaced with Exim's strcmpic() function.
207 (d) The code set only $1; it now sets $auth1 as well.
208 (e) A simple test gave the error "authentication client didn't specify
209 service in request". It would seem that Dovecot has changed its
210 interface. Fortunately there's a specification; I followed it and
211 changed what the client sends and it appears to be working now.
212
ff75a1f7
PH
213PH/13 Added $message_headers_raw to provide the headers without RFC 2047
214 decoding.
215
e6f6568e
PH
216PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
217 address A is aliased to B and C, where B exists and C does not. Without
218 -v the output is "A verified" because verification stops after a
219 successful redirection if more than one address is generated. However,
220 with -v the child addresses are also verified. Exim was outputting "A
221 failed to verify" and then showing the successful verification for C,
222 with its parentage. It now outputs "B failed to verify", showing B's
223 parentage before showing the successful verification of C.
224
d6f6e0dc
PH
225PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
226 look up a TXT record in a specific list after matching in a combined
227 list.
228
322050c2
PH
229PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
230 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
231 they consult the DNS. I had assumed they would set it the way they
232 wanted; and indeed my experiments on Linux seem to show that in some
233 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
234 To be on the safe side, however, I have now made the interface to
235 host_find_byname() similar to host_find_bydns(), with an argument
236 containing the DNS resolver options. The host_find_byname() function now
237 sets these options at its start, just as host_find_bydns() does. The smtp
238 transport options dns_qualify_single and dns_search_parents are passed to
239 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
240 of host_find_byname() use the default settings of RES_DEFNAMES
241 (qualify_single) but not RES_DNSRCH (search_parents).
242
08955dd3
PH
243PH/17 Applied (a modified version of) Nico Erfurth's patch to make
244 spool_read_header() do less string testing, by means of a preliminary
245 switch on the second character of optional "-foo" lines. (This is
246 overdue, caused by the large number of possibilities that now exist.
247 Originally there were few.) While I was there, I also converted the
248 str(n)cmp tests so they don't re-test the leading "-" and the first
249 character, in the hope this might squeeze out yet more improvement.
250
1eccaa59
PH
251PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
252 flag allowing group syntax was set by the header_syntax check but not
253 turned off, possible causing trouble later; (2) The flag was not being
254 set at all for the header_verify test, causing "group"-style headers to
255 be rejected. I have now set it in this case, and also caused header_
256 verify to ignore an empty address taken from a group. While doing this, I
257 came across some other cases where the code for allowing group syntax
258 while scanning a header line wasn't quite right (mostly, not resetting
259 the flag correctly in the right place). These bugs could have caused
260 trouble for malformed header lines. I hope it is now all correct.
261
602e59e5
PH
262PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
263 with the "reply" argument non-NULL. The code, however (which originally
264 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
265 but it didn't always do it. This confused somebody who was copying the
266 code for some other use. I have removed all the tests.
267
411ef850
PH
268PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
269 feature that was used to support insecure browsers during the U.S. crypto
270 embargo. It requires special client support, and Exim is probably the
271 only MTA that supported it -- and would never use it because real RSA is
272 always available. This code has been removed, because it had the bad
273 effect of slowing Exim down by computing (never used) parameters for the
274 RSA_EXPORT functionality.
275
7befa435
PH
276PH/21 On the advice of Timo Sirainen, added a check to the dovecot
277 authenticator to fail if there's a tab character in the incoming data
278 (there should never be unless someone is messing about, as it's supposed
279 to be base64-encoded). Also added, on Timo's advice, the "secured" option
280 if the connection is using TLS or if the remote IP is the same as the
281 local IP, and the "valid-client-cert option" if a client certificate has
282 been verified.
283
48da4259 284PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
285 authenticators. This can be used for authorization after authentication
286 succeeds. (In the case of plaintext, it servers for both authentication
287 and authorization.)
288
48da4259
PH
289PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
290 if any retry times were supplied.
291
d1d5595c
PH
292PH/24 Exim crashed if verify=helo was activated during an incoming -bs
293 connection, where there is no client IP address to check. In this
294 situation, the verify now always succeeds.
295
0ef732d9
PH
296PH/25 Applied John Jetmore's -Mset patch.
297
328895cc
PH
298PH/26 Added -bem to be like -Mset, but loading a message from a file.
299
fd700877
PH
300PH/27 In a string expansion for a processed (not raw) header when multiple
301 headers of the same name were present, leading whitespace was being
302 removed from all of them, but trailing whitespace was being removed only
303 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
304 before concatenation. Completely empty headers in a concatenation (as
305 before) are ignored.
fd700877 306
8dce1a6f
PH
307PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
308 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
309
17af4a17
PH
310PH/29 [Removed. This was a change that I later backed out, and forgot to
311 correct the ChangeLog entry (that I had efficiently created) before
312 committing the later change.]
f6c332bd
PH
313
314PH/30 Exim was sometimes attempting to deliver messages that had suffered
315 address errors (4xx response to RCPT) over the same connection as other
316 messages routed to the same hosts. Such deliveries are always "forced",
317 so retry times are not inspected. This resulted in far too many retries
318 for the affected addresses. The effect occurred only when there were more
319 hosts than the hosts_max_try setting in the smtp transport when it had
320 the 4xx errors. Those hosts that it had tried were not added to the list
321 of hosts for which the message was waiting, so if all were tried, there
322 was no problem. Two fixes have been applied:
323
324 (i) If there are any address or message errors in an SMTP delivery, none
325 of the hosts (tried or untried) are now added to the list of hosts
326 for which the message is waiting, so the message should not be a
327 candidate for sending over the same connection that was used for a
328 successful delivery of some other message. This seems entirely
329 reasonable: after all the message is NOT "waiting for some host".
330 This is so "obvious" that I'm not sure why it wasn't done
331 previously. Hope I haven't missed anything, but it can't do any
332 harm, as the worst effect is to miss an optimization.
333
334 (ii) If, despite (i), such a delivery is accidentally attempted, the
335 routing retry time is respected, so at least it doesn't keep
336 hammering the server.
337
c1114884
PH
338PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
339 in ${readsocket because some servers need this prod.
340
7a0743eb
PH
341PH/32 Added some extra debug output when updating a wait-xxx database.
342
0d85fa3f
PH
343PH/33 The hint "could be header name not terminated by colon", which has been
344 given for certain expansion errors for a long time, was not being given
345 for the ${if def:h_colon_omitted{... case.
346
1bf43b78
PH
347PH/34 The spec says: "With one important exception, whenever a domain list is
348 being scanned, $domain contains the subject domain." There was at least
349 one case where this was not true.
350
520de300
PH
351PH/35 The error "getsockname() failed: connection reset by peer" was being
352 written to the panic log as well as the main log, but it isn't really
353 panic-worthy as it just means the connection died rather early on. I have
354 removed the panic log writing for the ECONNRESET error when getsockname()
355 fails.
356
48c7f9e2
PH
357PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
358 runs only) independently of the message's sender address. This meant
359 that, if the 4xx error was in fact related to the sender, a different
360 message to the same recipient with a different sender could confuse
361 things. In particualar, this can happen when sending to a greylisting
362 server, but other circumstances could also provoke similar problems.
363 I have changed the default so that the retry time for these errors is now
364 based a combination of the sender and recipient addresses. This change
365 can be overridden by setting address_retry_include_sender=false in the
366 smtp transport.
367
99ea1c86
PH
368PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
369 remote server are returned as part of bounce messages. This was not
370 happening for LMTP over a pipe (the lmtp transport), but now it is the
371 same for both kinds of LMTP.
372
a2042e78
PH
373PH/38 Despite being documented as not happening, Exim was rewriting addresses
374 in header lines that were in fact CNAMEs. This is no longer the case.
375
4fbcfc2e
PH
376PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
377 and queue runs started by the daemon processed all messages. This has
378 been fixed so that -R and -S can now usefully be given with -q<time>.
379
aa41d2de
PH
380PH/40 Import PCRE release 6.7 (fixes some bugs).
381
af561417
PH
382PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
383
3cc66b45
PH
384PH/42 Give an error if -q is specified more than once.
385
194cc0e4
PH
386PH/43 Renamed the variables $interface_address and $interface_port as
387 $received_ip_address and $received_port, to make it clear that these
388 values apply to message reception, and not to the outgoing interface when
389 a message is delivered. (The old names remain recognized, of course.)
390
a401ddaa
PH
391PH/44 There was no timeout on the connect() call when using a Unix domain
392 socket in the ${readsocket expansion. There now is.
393
4e88a19f
PH
394PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
395 be meaningful with "accept".
396
d7d7b289
SC
397SC/01 Eximstats V1.43
398 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
399
400SC/02 Eximstats V1.44
401 Use a glob alias rather than an array ref in the generated
402 parser. This improves both readability and performance.
403
404SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
405 Collect SpamAssassin and rejection statistics.
406 Don't display local sender or destination tables unless
407 there is data to show.
408 Added average volumes into the top table text output.
409
410SC/04 Eximstats V1.46
411 Collect data on the number of addresses (recipients)
412 as well as the number of messages.
413
414SC/05 Eximstats V1.47
415 Added 'Message too big' to the list of mail rejection
416 reasons (thanks to Marco Gaiarin).
417
418SC/06 Eximstats V1.48
419 Mainlog lines which have GMT offsets and are too short to
420 have a flag are now skipped.
421
422SC/07 Eximstats V1.49 (Alain Williams)
423 Added the -emptyok flag.
424
425SC/08 Eximstats V1.50
426 Fixes for obtaining the IP address from reject messages.
427
0ea2a468
JJ
428JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
429 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
430 whitesspace changes from 4.64-PH/27
431
432JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
433 match 4.64-PH/13
434
435JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
436 are found, allow negative numbers in numeric criteria)
437
438JJ/06 exipick.20061117.2, added new $message_body_missing variable
439
440JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
441 to match changes made in 4.64-PH/43
442
8a10f5a4
PH
443PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
444
30e18802
PH
445PH/47 Put in an explicit test for a DNS lookup of an address record where the
446 "domain" is actually an IP address, and force a failure. This locks out
447 those revolvers/nameservers that support "A-for-A" lookups, in
448 contravention of the specifications.
449
55728a4f
PH
450PH/48 When a host name was looked up from an IP address, and the subsequent
451 forward lookup of the name timed out, the host name was left in
452 $sender_host_name, contrary to the specification.
d7d7b289 453
d7837193
PH
454PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
455 restricted to single-key lookups, Exim was not diagnosing an error if
456 * or *@ was used with a query-style lookup.
457
87054a31
PH
458PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
459
ea2c01d2
MH
460MH/01 local_scan ABI version incremented to 1.1. It should have been updated
461 long ago, but noone interested enough thought of it. Let's just say that
462 the "1.1" means that there are some new functions that weren't there at
463 some point in the past.
464
e4fa6968
PH
465PH/51 Error processing for expansion failure of helo_data from an smtp
466 transport during callout processing was broken.
467
56f5d9bd
PH
468PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
469 tested/used via the -bh/-bhc/-bs options.
470
922e1c28
PH
471PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
472 bug, fixed in subsequent PCRE releases).
473
21eb6e72
PH
474PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
475 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
476
a0540757
PH
477PH/55 Check for a ridiculously long file name in exim_dbmbuild.
478
944e9e9c 479
478be7b0
SC
480Exim version 4.63
481-----------------
482
483SC/01 Use a glob alias rather than an array ref in eximstats generated
484 parser. This improves both readability and performance.
485
486SC/02 Collect SpamAssassin and rejection statistics in eximstats.
487 Don't display local sender or destination tables in eximstats unless
488 there is data to show.
489 Added average volumes into the eximstats top table text output.
490
491SC/03 Collect data on the number of addresses (recipients) as well
492 as the number of messages in eximstats.
493
2b965a65
TF
494TF/01 Correct an error in the documentation for the redirect router. Exim
495 does (usually) call initgroups() when daemonizing.
478be7b0 496
45b91596
PH
497TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
498 with consistent privilege compared to when running as a daemon.
478be7b0 499
c59f5781
TF
500TF/03 Note in the spec that $authenticated_id is not set for local
501 submissions from trusted users.
502
90fc3069
TF
503TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
504 Thanks to Dean Brooks <dean@iglou.com> for the patch.
505
6083aca0
TF
506TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
507 by adding some example configuration directives to the default
508 configuration file. A little bit of work is required to uncomment the
509 directives and define how usernames and passwords are checked, but
510 there is now a framework to start from.
511
765b530f
PH
512PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
513 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
514 without this. I don't know how relevant this is to other LDAP libraries.
515
4e167a8c
PH
516PH/02 Add the verb name to the "unknown ACL verb" error.
517
4608d683
PH
518PH/03 Magnus Holmgren's patch for filter_prepend_home.
519
b8dc3e4a
PH
520PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
521
5418e93b
PH
522PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
523 directory not expanded when it should be if an expanded home directory
524 was set for the address (which is overridden by the transport).
525
b4a9bda2
PH
526PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
527 libradius.
528
45b91596
PH
529PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
530 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
531 because it is too late at that time, and has no effect.
532
5547e2c5
PH
533PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
534 security issue with \' (bugzilla #107). I could not use the
535 PQescapeStringConn() function, because it needs a PGconn value as one of
536 its arguments.
537
dbcef0ea
PH
538PH/08 When testing addresses using -bt, indicate those final addresses that
539 are duplicates that would not cause an additional delivery. At least one
540 person was confused, thinking that -bt output corresponded to deliveries.
541 (Suppressing duplicates isn't a good idea as you lose the information
542 about possibly different redirections that led to the duplicates.)
543
25257489
PH
544PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
545 systems where poll() doesn't work, in particular OS X.
546
c816d124
PH
547PH/10 Added more information to debugging output for retry time not reached.
548
a9ccd69a
PH
549PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
550 operations in malware.c.
551
75fa1910
PH
552PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
553 signatures.
554
a7d7aa58
PH
555PH/13 If write_rejectlog was set false when logging was sent to syslog with
556 syslog_duplication set false, log lines that would normally be written
557 both the the main log and to the reject log were not written to syslog at
558 all.
559
42119b09
PH
560PH/14 In the default configuration, change the use of "message" in ACL warn
561 statements to "add_header".
562
41609df5
PH
563PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
564 not followed by a command (e.g. "seen endif").
565
a5bd321b
PH
566PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
567 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
568 latter.
569
e85a7ad5 570PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
571 so that it is now:
572
e85a7ad5
PH
573 ${if or { \
574 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
575 { match{$h_precedence:}{(?i)bulk|list|junk} } \
576 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
577 }{no}{yes}}
578
e85a7ad5
PH
579 The Auto-Submitted: and various List- headers are standardised, whereas I
580 don't think Precedence: ever was.
5dff5817 581
d8fe1c03
PH
582PH/18 Refactored debugging code in route_finduser() to show more information,
583 in particular, the error code if getpwnam() issues one.
584
16282d2b
PH
585PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
586 This is apparently needed in addition to the PH/07 change above to avoid
587 any possible encoding problems.
588
35d40a98
PH
589PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
590 but not after initializing Perl.
591
034d99ab
PH
592PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
593 output them only if debugging. By default they are written stderr,
594 apparently, which is not desirable.
595
6ec97b1b
PH
596PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
597 queries.
598
e22ca4ac
JJ
599JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
600 --not options
601
602JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
603
33d73e3b
PH
604PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
605 authenticated or an ident call has been made. Suppress the default
606 values for $authenticated_id and $authenticated_sender (but permit -oMai
607 and -oMas) when testing with -bh.
608
9ecb03f3
PH
609PH/24 Re-jigged the order of the tests in the default configuration so that the
610 tests for valid domains and recipients precede the DNS black list and CSA
611 tests, on the grounds that those ones are more expensive.
612
084efe8d
PH
613PH/25 Exim was not testing for a space following SMTP commands such as EHLO
614 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
615 This bug exists in every version of Exim that I still have, right back to
616 0.12.
617
366fc9f0
PH
618PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
619 However, an attempt to turn on case-sensitivity in a regex key by
620 including (?-i) didn't work because the subject string was already
621 lowercased, and the effects were non-intuitive. It turns out that a
622 one-line patch can be used to allow (?-i) to work as expected.
623
c59f5781 624
c887c79e
TF
625Exim version 4.62
626-----------------
627
628TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
629 other effects) broke the use of negated acl sub-conditions.
630
1cce3af8
PH
631PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
632 patch).
633
afb3eaaf
PH
634PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
635 "Deny" causes Exim to reject the incoming connection with a 554 error.
636 Unfortunately, if there is a major crisis, such as a disk failure,
637 tcp-wrappers gives "deny", whereas what one would like would be some
638 kind of temporary error. A kludge has been added to help with this.
639 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
640 554 error is used if errno is still zero or contains ENOENT (which occurs
641 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
642 451 error is used.
643
e173618b
PH
644PH/03 Add -lutil to the default FreeBSD LIBS setting.
645
dd16e114
PH
646PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
647 errors. Otherwise a message that provokes a temporary error (when other
648 messages do not) can cause a whole host to time out.
649
f7fd3850
PH
650PH/05 Batch deliveries by appendfile and pipe transports did not work when the
651 addresses were routed directly to files or pipes from a redirect router.
652 File deliveries just didn't batch; pipe deliveries might have suffered
653 odd errors.
654
d87df92c
PH
655PH/06 A failure to get a lock for a hints database would erroneously always say
656 "Failed to get write lock", even when it was really a read lock.
657
7e9f683d
PH
658PH/07 The appendfile transport was creating MBX lock files with a fixed mode
659 of 0600. This has been changed to use the value of the lockfile_mode
660 option (which defaults to 0600).
661
bfad5236
PH
662PH/08 Applied small patch from the Sieve maintainer.
663
01c490df
PH
664PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
665 folder from quota calculations, a direct delivery into this folder messed
666 up the contents of the maildirsize file. This was because the regex was
667 used only to exclude .Trash (or whatever) when the size of the mailbox
668 was calculated. There was no check that a delivery was happening into an
669 excluded directory. This bug has been fixed by ignoring all quota
670 processing for deliveries into excluded directories.
671
d6629cdc
PH
672PH/10 Added the maildirfolder_create_regex option to appendfile.
673
1cce3af8 674
214e2000
PH
675Exim version 4.61
676-----------------
677
678PH/01 The code for finding all the local interface addresses on a FreeBSD
679 system running IPv6 was broken. This may well have applied to all BSD
680 systems, as well as to others that have similar system calls. The broken
681 code found IPv4 interfaces correctly, but gave incorrect values for the
682 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
683 that it would not match correctly against @[] and not recognize the IPv6
684 addresses as local.
685
f9daeae0
PH
686PH/02 The ipliteral router was not recognizing addresses of the form user@
687 [ipv6:....] because it didn't know about the "ipv6:" prefix.
688
7e66e54d
PH
689PH/03 Added disable_ipv6.
690
c8ea1597
PH
691PH/04 Changed $reply_address to use the raw form of the headers instead of the
692 decoded form, because it is most often used to construct To: headers
693 lines in autoreplies, and the decoded form may well be syntactically
694 invalid. However, $reply_address has leading white space removed, and all
695 newlines turned into spaces so that the autoreply transport does not
696 grumble.
697
911f6fde
PH
698PH/05 If group was specified without a user on a router, and no group or user
699 was specified on a transport, the group from the router was ignored.
700
47ca6d6c
PH
701PH/06 Increased the number of ACL variables to 20 of each type, and arranged
702 for visible compile-time settings that can be used to change these
703 numbers, for those that want even more. Backwards compatibility with old
704 spool files has been maintained. However, going back to a previous Exim
705 release will lost any variables that are in spool files.
706
ed0e9820
PH
707PH/07 Two small changes when running in the test harness: increase delay when
708 passing a TCP/IP connection to a new process, in case the original
709 process has to generate a bounce, and remove special handling of
710 127.0.0.2 (sic), which is no longer necessary.
711
eff37e47
PH
712PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
713 be the same on different OS.
714
1921d2ea
PH
715PH/09 Moved a debug statement in filter processing to avoid a race problem when
716 testing.
717
b3f69ca8
JJ
718JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
719 whether --show-vars was specified or not
720
721JJ/02 exipick: Added support for new ACL variable spool format introduced
722 in 4.61-PH/06
723
424a1c63
PH
724PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
725 syntactically invalid From: or Reply-to: line, and a filter used this to
726 generate an autoreply, and therefore failed to obtain an address for the
727 autoreply, Exim could try to deliver to a non-existent relative file
728 name, causing unrelated and misleading errors. What now happens is that
729 it logs this as a hard delivery error, but does not attempt to create a
730 bounce message.
731
7a100415
PH
732PH/11 The exinext utility has a -C option for testing purposes, but although
733 the given file was scanned by exinext itself; it wasn't being passed on
734 when Exim was called.
735
19b9dc85
PH
736PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
737 an end-of-file indication when reading a command response.
738
309bd837
PH
739PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
740 compiled. In many other places in Exim, IPv6 addresses are always
741 recognized, so I have changed this. It also means that IPv4 domain
742 literals of the form [IPV4:n.n.n.n] are now always recognized.
743
59e82a2a
PH
744PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
745 used if the router is not running as root, for example, when verifying at
746 ACL time, or when using -bh. The debugging output from this situation was
747 non-existent - all you got was a failure to exec. I have made two
748 changes:
749
750 (a) Failures to set uid/gid, the current directory, or a process leader
751 in a subprocess such as that created by queryprogram now generate
752 suitable debugging ouput when -d is set.
753
754 (b) The queryprogram router detects when it is not running as root,
755 outputs suitable debugging information if -d is set, and then runs
756 the subprocess without attempting to change uid/gid.
757
9edc04ce
PH
758PH/15 Minor change to Makefile for building test_host (undocumented testing
759 feature).
760
1349e1e5
PH
761PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
762 additional section of a DNS packet that returns MX or SRV records.
763 Instead, it always explicitly searches for A/AAAA records. This avoids
764 major problems that occur when a DNS server includes only records of one
765 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
766 fixed another bug: if SRV records were looked up and the corresponding
767 address records were *not* found in the additional section, the port
768 values from the SRV records were lost.
769
ea49d0e1
PH
770PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
771 using the correct key (the original address) when searching the retry
772 rules in order to find which one to use for generating the retry hint.
773
064a94c9
PH
774PH/18 If quota_warn_message contains a From: header, Exim now refrains from
775 adding the default one. Similarly, if it contains a Reply-To: header, the
776 errors_reply_to option, if set, is not used.
777
727071f8
PH
778PH/19 When calculating a retry time, Exim used to measure the "time since
779 failure" by looking at the "first failed" field in the retry record. Now
780 it does not use this if it is later than than the arrival time of the
781 message. Instead it uses the arrival time. This makes for better
782 behaviour in cases where some deliveries succeed, thus re-setting the
783 "first failed" field. An example is a quota failure for a huge message
784 when small messages continue to be delivered. Without this change, the
785 "time since failure" will always be short, possible causing more frequent
786 delivery attempts for the huge message than are intended.
dd16e114 787 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 788
f78eb7c6
PH
789PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
790 $1, $2, $3) because the numerical variables can be reset during some
791 expansion items (e.g. "match"), thereby losing the authentication data.
792
21c28500
PH
793PH/21 Make -bV show the size of off_t variables so that the test suite can
794 decide whether to run tests for quotas > 2G.
795
796PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
797 mailbox_size, and mailbox_filecount in the appendfile transport. If a
798 filecount value is greater than 2G or if a quota value is greater than 2G
799 on a system where the size of off_t is not greater than 4, a panic error
800 is given.
801
1688f43b
PH
802PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
803 never match. The debug and -bh output now contains an explicit error
804 message indicating a malformed IPv4 address or mask.
805
806PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
807 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
808 PH/23 above applies.
809
9675b384
PH
810PH/25 Do not write to syslog when running in the test harness. The only
811 occasion when this arises is a failure to open the main or panic logs
812 (for which there is an explicit test).
813
6a3f1455
PH
814PH/26 Added the /no_tell option to "control=freeze".
815
dac79d3e
PH
816PH/27 If a host name lookup failed very early in a connection, for example, if
817 the IP address matched host_lookup and the reverse lookup yielded a name
818 that did not have a forward lookup, an error message of the form "no IP
819 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
820 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 821
5977a0b3
PH
822PH/28 An enabling patch from MH: add new function child_open_exim2() which
823 allows the sender and the authenticated sender to be set when
824 submitting a message from within Exim. Since child_open_exim() is
825 documented for local_scan(), the new function should be too.
826
c91535f3
PH
827PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
828 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
829 results in an empty string is now treated as unset.
830
0d46a8c8
PH
831PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
832
278c6e6c
PH
833PH/31 Added sender_verify_fail logging option.
834
2cbb4081
PH
835PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
836 needed by RFC 822 but not by RFC 2822 was commented out. I have now
837 tidied the source and removed it altogether.
838
3eef829e
PH
839PH/33 When a queue run was abandoned because the load average was too high, a
840 log line was always written; now it is written only if the queue_run log
841 selector is set. In addition, the log line for abandonment now contains
842 information about the queue run such as the pid. This is always present
843 in "start" and "stop" lines but was omitted from the "abandon" line.
844
1ab95fa6
PH
845PH/34 Omit spaces between a header name and the colon in the error message that
846 is given when verify = headers_syntax fails (if there are lots of them,
847 the message gets confusing).
848
230205fc
PH
849PH/35 Change the default for dns_check_names_pattern to allow slashes within
850 names, as there are now some PTR records that contain slashes. This check
851 is only to protect against broken name servers that fall over on strange
852 characters, so the fact that it applies to all lookups doesn't matter.
853
75e0e026
PH
854PH/36 Now that the new test suite is complete, we can remove some of the
855 special code in Exim that was needed for the old test suite. For example,
856 sorting DNS records because real resolvers return them in an arbitrary
857 order. The new test suite's fake resolver always returns records in the
858 same order.
859
860PH/37 When running in the test harness, use -odi for submitted messages (e.g.
861 bounces) except when queue_only is set, to avoid logging races between
862 the different processes.
863
145396a6
PH
864PH/38 Panic-die if .include specifies a non-absolute path.
865
3cd34f13
PH
866PH/39 A tweak to the "H" retry rule from its user.
867
11121d3d
JJ
868JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
869 a label. They prevented compilation on older perls.
870
871JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
872 a warning to be raised on newish perls.
873
874JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
875 on queue. Changes to match documented behaviour of showing count of
876 messages matching specified criteria.
877
8def5aaf
PH
878PH/40 Changed the default ident timeout from 30s to 5s.
879
929ba01c
PH
880PH/41 Added support for the use of login_cap features, on those BSD systems
881 that have them, for controlling the resources used by pipe deliveries.
882
2632889e
PH
883PH/42 The content-scanning code uses fopen() to create files in which to put
884 message data. Previously it was not paying any attention to the mode of
885 the files. Exim runs with umask(0) because the rest of the code creates
886 files with open(), and sets the required mode explicitly. Thus, these
887 files were ending up world-writeable. This was not a big issue, because,
888 being within the spool directory, they were not world-accessible. I have
889 created a function called modefopen, which takes an additional mode
890 argument. It sets umask(777), creates the file, chmods it to the required
891 mode, then resets the umask. All the relevant calls to fopen() in the
892 content scanning code have been changed to use this function.
893
944a9c55
PH
894PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
895 to 24 hours. This avoids potential overflow problems when processing G
896 and H retry rules. I suspect nobody ever tinkers with this value.
897
4a23603b
PH
898PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
899
4730f942
PH
900PH/45 When the plaintext authenticator is running as a client, the server's
901 challenges are checked to ensure they are valid base64 strings. By
902 default, the authentication attempt is cancelled if an invalid string is
903 received. Setting client_ignore_invalid_base64 true ignores these errors.
904 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
905 they are received. Thus, the responses can be made to depend on the
906 challenges. If an invalid string is ignored, an empty string is placed in
907 the variable.
908
30dba1e6
PH
909PH/46 Messages that are created by the autoreply transport now contains a
910 References: header, in accordance with RFCs 2822 and 3834.
911
382afc6b
PH
912PH/47 Added authenticated_sender_force to the smtp transport.
913
a86229cf
PH
914PH/48 The ${prvs expansion was broken on systems where time_t was long long.
915
50c99ba6
PH
916PH/49 Installed latest patch from the Sieve maintainer.
917
d35e429d
PH
918PH/50 When an Exim quota was set without a file count quota, and mailbox_size
919 was also set, the appendfile transport was unnecessarily scanning a
920 directory of message files (e.g. for maildir delivery) to find the count
921 of files (along with the size), even though it did not need this
922 information. It now does the scan only if it needs to find either the
923 size of the count of files.
924
f90d018c
PH
925PH/51 Added ${time_eval: to convert Exim time strings into seconds.
926
75def545
PH
927PH/52 Two bugs concerned with error handling when the smtp transport is
928 used in LMTP mode:
929
930 (i) Exim was not creating retry information for temporary errors given
931 for individual recipients after the DATA command when the smtp transport
932 was used in LMTP mode. This meant that they could be retried too
933 frequently, and not timed out correctly.
934
935 (ii) Exim was setting the flag that allows error details to be returned
936 for LMTP errors on RCPT commands, but not for LMTP errors for individual
937 recipients that were returned after the DATA command.
938
939PH/53 This is related to PH/52, but is more general: for any failing address,
940 when detailed error information was permitted to be returned to the
941 sender, but the error was temporary, then after the final timeout, only
942 "retry timeout exceeded" was returned. Now it returns the full error as
943 well as "retry timeout exceeded".
944
c46782ef
PH
945PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
946 do this, and (what is worse) MTAs that accept it.
947
71fafd95
PH
948PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
949 will now be deprecated.
950
2c5db4fd
PH
951PH/56 New os.c-cygwin from the Cygwin maintainer.
952
9cf6b11a
JJ
953JJ/06 exipick: added --unsorted option to allow unsorted output in all output
954 formats (previously only available in exim formats via -bpr, -bpru,
955 and -bpra. Now also available in native and exiqgrep formats)
956
957JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
958 with very large, slow to parse queues
959
960JJ/08 exipick: added ! as generic prefix to negate any criteria format
961
962JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
963
898d150f
PH
964PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
965 responses to authentication challenges, though it was showing the
966 challenges; (ii) I've removed the CR characters from the debug output for
967 SMTP output lines.
968
46218253
PH
969PH/58 Allow for the insertion of a newline as well as a space when a string
970 is turned into more than one encoded-word during RFC 2047 encoding. The
971 Sieve code now uses this.
972
e97957bc
PH
973PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
974 data_4xx, lost_connection, tls_required.
975
81e509d7
PH
976PH/60 When a VRFY deferred or FAILED, the log message rather than the user
977 message was being sent as an SMTP response.
978
3d240ff7
PH
979PH/61 Add -l and -k options to exicyclog.
980
b37c4101
PH
981PH/62 When verifying, if an address was redirected to one new address, so that
982 verification continued, and the new address failed or deferred after
983 having set something in $address_data, the value of $address_data was not
984 passed back to the ACL. This was different to the case when no
985 redirection occurred. The value is now passed back in both cases.
986
79378e0f
PH
987PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
988 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
989 use login_cap.h, so on its own it isn't the distinguishing feature. The
990 new name refers directly to the setclassresources() function.
991
e49c7bb4
PH
992PH/65 Added configuration files for NetBSD3.
993
d114ec46
PH
994PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
995
f3d7df6c
PH
996PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
997 is preferred over IPv4.
998
715ab376
PH
999PH/68 The bounce_return_message and bounce_return_body options were not being
1000 honoured for bounces generated during the reception of non-SMTP messages.
1001 In particular, this applied to messages rejected by the ACL. This bug has
1002 been fixed. However, if bounce_return_message is true and bounce_return_
1003 body is false, the headers that are returned for a non-SMTP message
1004 include only those that have been read before the error was detected.
1005 (In the case of an ACL rejection, they have all been read.)
1006
6b31b150
PH
1007PH/69 The HTML version of the specification is now built in a directory called
1008 spec_html instead of spec.html, because the latter looks like a path with
1009 a MIME-type, and this confuses some software.
1010
1011PH/70 Catch two compiler warnings in sieve.c.
1012
d515a917
PH
1013PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1014 function verify_get_ident() calls ip_connect() to connect a socket, but
1015 if the "connect()" function timed out, ip_connect() used to close the
1016 socket. However, verify_get_ident() also closes the socket later, and in
1017 between Exim writes to the log, which may get opened at this point. When
1018 the socket was closed in ip_connect(), the log could get the same file
1019 descriptor number as the socket. This naturally causes chaos. The fix is
1020 not to close the socket in ip_connect(); the socket should be closed by
1021 the function that creates it. There was only one place in the code where
1022 this was missing, in the iplookup router, which I don't think anybody now
1023 uses, but I've fixed it anyway.
1024
9b8fadde
PH
1025PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1026 well as to direct DNS lookups. Otherwise the handling of names in host
1027 lists is inconsistent and therefore confusing.
1028
214e2000 1029
5de37277
PH
1030Exim version 4.60
1031-----------------
1032
cc38ddbf
PH
1033PH/01 Two changes to the default runtime configuration:
1034
1035 (1) Move the checks for relay_from_hosts and authenticated clients from
1036 after to before the (commented out) DNS black list checks.
1037
1038 (2) Add control=submission to the relay_from_hosts and authenticated
1039 clients checks, on the grounds that messages accepted by these
1040 statements are most likely to be submissions.
5de37277 1041
72fdd6ae
PH
1042PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1043
1044 (1) Generate an error if the third argument for the ${prvs expansion is
1045 not a single digit.
1046
1047 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1048 string.
1049
1050 (3) Reset the variables that are obtained from the first argument of
1051 ${prvscheck and used in the second argument before leaving the code,
1052 because their memory is reclaimed, so using them afterwards may do
1053 silly things.
1054
1055 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1056 one (it's much easier than Tom thought :-).
1057
1058 (5) Because of (4), we can now allow for the use of $prvscheck_result
1059 inside the third argument.
cb9328de 1060
cb741023
PH
1061PH/03 For some reason, the default setting of PATH when running a command from
1062 a pipe transport was just "/usr/bin". I have changed it to
1063 "/bin:/usr/bin".
1064
f174f16e
PH
1065PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1066 anything to be listed in the output from -bV.
b2f5a032 1067
c25242d7
PH
1068PH/05 When a filter generated an autoreply, the entire To: header line was
1069 quoted in the delivery log line, like this:
1070
1071 => >A.N.Other <ano@some.domain> <original@ddress> ...
1072
1073 This has been changed so that it extracts the operative address. There
1074 may be more than one such address. If so, they are comma-separated, like
1075 this:
1076
1077 => >ano@some.domain,ona@other.domain <original@ddress> ...
1078
82c19f95
PH
1079PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1080 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1081 not being looked up in the rDNS to get a host name, Exim was showing the
1082 IP address twice in Received: lines, even though the IP addresses were
1083 identical. For example:
1084
1085 Received: from [1.2.3.4] (helo=[1.2.3.4])
1086
1087 However, if the real host name was known, it was omitting the HELO data
1088 if it matched the actual IP address. This has been tidied up so that it
1089 doesn't show the same IP address twice.
1090
d7ffbc12
PH
1091PH/07 When both +timestamp and +memory debugging was on, the value given by
1092 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1093 called by the debug printing, thereby overwriting the timestamp buffer.
1094 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1095
9f526266
PH
1096PH/08 When the original message was included in an autoreply transport, it
1097 always said "this is a copy of the message, including all the headers",
1098 even if body_only or headers_only was set. It now gives an appropriate
1099 message.
1100
87fcc8b9
PH
1101PH/09 Applied a patch from the Sieve maintainer which:
1102
1103 o fixes some comments
1104 o adds the (disabled) notify extension core
1105 o adds some debug output for the result of if/elsif tests
1106 o points to the current vacation draft in the documentation
1107 and documents the missing references header update
1108
1109 and most important:
1110
1111 o fixes a bug in processing the envelope test (when testing
1112 multiple envelope elements, the last element determinted the
1113 result)
1114
456682f5
PH
1115PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1116 Electronic Mail") by including:
1117
1118 Auto-submitted: auto-generated
1119
1120 in the messages that it generates (bounce messages and others, such as
1121 warnings). In the case of bounce messages for non-SMTP mesages, there was
1122 also a typo: it was using "Auto_submitted" (underscore instead of
1123 hyphen). Since every message generated by Exim is necessarily in response
1124 to another message, thes have all been changed to:
1125
1126 Auto-Submitted: auto-replied
1127
1128 in accordance with these statements in the RFC:
1129
1130 The auto-replied keyword:
1131
1132 - SHOULD be used on messages sent in direct response to another
1133 message by an automatic process,
1134
1135 - MUST NOT be used on manually-generated messages,
1136
1137 - MAY be used on Delivery Status Notifications (DSNs) and Message
1138 Disposition Notifications (MDNs),
1139
1140 - MUST NOT be used on messages generated by automatic or periodic
1141 processes, except for messages which are automatic responses to
1142 other messages.
1143
3e46c1aa
PH
1144PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1145 to the default Received: header definition.
456682f5 1146
49826d12
PH
1147PH/12 Added log selector acl_warn_skipped (default on).
1148
eba0c039
PH
1149PH/13 After a successful wildlsearch lookup, discard the values of numeric
1150 variables because (a) they are in the wrong storage pool and (b) even if
1151 they were copied, it wouldn't work properly because of the caching.
1152
a0d6ba8a
PH
1153PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1154 checking when decoding. Apparently there are clients that generate
1155 overlong encoded strings. Why am I not surprised?
1156
f0917727
PH
1157PH/15 If the first argument of "${if match_address" was not empty, but did not
1158 contain an "@" character, Exim crashed. Now it writes a panic log message
1159 and treats the condition as false.
1160
096fee00
PH
1161PH/16 In autoreply, treat an empty string for "once" the same as unset.
1162
024bd3c2
PH
1163PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1164 extension "envelope-auth". The code is finished and in agreement with
1165 other implementations, but there is no documentation so far and in fact,
1166 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1167 not changing the active code.
1168
1169 Print executed "if" and "elsif" statements when debugging is used. This
1170 helps a great deal to understand what a filter does.
1171
1172 Document more things not specified clearly in RFC3028. I had all this
1173 sorted out, when out of a sudden new issues came to my mind. Oops."
1174
df199fec
PH
1175PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1176 (Bugzilla #53).
1177
d27f1df3
PH
1178PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1179 canonical form (as documented). However, after a host name lookup from
1180 the IP address, check_host() was doing a simple string comparison with
1181 addresses acquired from the DNS when checking that the found name did
1182 have the original IP as one of its addresses. Since any found IPv6
1183 addresses are likely to be in abbreviated form, the comparison could
1184 fail. Luckily, there already exists a function for doing the comparison
1185 by converting both addresses to binary, so now that is used instead of
1186 the text comparison.
1187
96776534
PH
1188PH/20 There was another similar case to PH/19, when a complete host name was
1189 given in a host list; looking up its IP address could give an abbreviated
1190 form, whereas the current host's name might or might not be abbreviated.
1191 The same fix has been applied.
1192
5de37277 1193
9a799bc0
PH
1194Exim version 4.54
1195-----------------
1196
1197PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1198 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1199 It now does.
1200
99a4b039
PH
1201PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1202 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1203
1204PH/03 Typo: missing ".o" in src/pcre/Makefile.
1205
4b233853
PH
1206PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1207 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1208 Also, for "Auto-Submitted", treat anything other than "no" as
1209 non-personal, in accordance with RFC 3834. (Previously it treated
1210 anything starting "auto-" as non-personal.)
1211
8857ccfd
PH
1212TF/01 The control=submission/name=... option had a problem with syntax
1213 errors if the name included a slash character. The /name= option
1214 now slurps the rest of the string, so it can include any characters
1215 but it must come last in the list of options (after /sender_retain
1216 or /domain=).
1217
433a2980
PH
1218PH/05 Some modifications to the interface to the fake nameserver for the new
1219 testing suite.
1220
3e46c1aa 1221
9a799bc0 1222
e3a311ba
TK
1223Exim version 4.53
1224-----------------
1225
1226TK/01 Added the "success_on_redirect" address verification option. See
1227 NewStuff for rationale and an example.
1228
13b685f9
PH
1229PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1230
395ff96d
PH
1231PH/02 Patch to exigrep to allow it to work on syslog lines.
1232
5b68f6e4
PH
1233PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1234 fread() to skip over the body file's header line, because in Cygwin the
1235 header line is locked and is inaccessible.
1236
1ab52c69
PH
1237PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1238 co-exist for some time) to make it clear that it is the Exim ID that is
1239 referenced, not the Message-ID: header line.
1240
b07e6aa3
PH
1241PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1242 string_format() function, because snprintf() does not exist on all
1243 operating systems.
1244
254e032f
PH
1245PH/06 The use of forbid_filter_existstest now also locks out the use of the
1246 ${stat: expansion item.
1247
3af76a81
PH
1248PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1249 protocol synchronization error", to keep the pedants happy.
1250
2548ba04
PH
1251PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1252 well as for IRIX systems, when gcc is being used. See the host.c source
1253 file for comments.
1254
b6c6011d
PH
1255PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1256
cf39cf57
PH
1257PH/10 Named domain lists were not working if used in a queue_smtp_domains
1258 setting.
1259
f1513293
PH
1260PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1261 transport and to the smtp transport in LMTP mode.
1262
727549a4
PH
1263TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1264
af46795e
PH
1265PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1266 run a filter in a subprocess. This could lead to confusion in subsequent
1267 lookups in the parent process. There should also be a search_tidyup() at
1268 the end of the subprocess.
1269
d7b47fd0
PH
1270PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1271 only if the host matched helo_try_verify_hosts, which caused the
1272 verification to occur when the EHLO/HELO command was issued. The ACL just
1273 tested the remembered result. Now, if a previous verification attempt has
1274 not happened, "verify = helo" does it there and then.
1275
ee744174
JJ
1276JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1277
b582ab87
PH
1278TK/03 Fix log output including CR from clamd.
1279
41a13e0a
PH
1280PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1281 exist provoked a memory error which could cause a segfault.
1282
f625cc5a
PH
1283PH/15 Installed PCRE 6.2
1284
1285PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1286
21f7af35
PH
1287PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1288 of the problem. Specifically, suggested +O2 rather than +O1 for the
1289 HP-UX compiler.
1290
31480e42
PH
1291PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1292
2d280592
PH
1293PH/20 If a delivery was routed to a non-standard port by means of an SRV
1294 record, the port was not correctly logged when the outgoing_port log
1295 selector was set (it logged the transort's default port).
1296
7cd1141b
PH
1297PH/21 Added support for host-specific ports to manualroute, queryprogram,
1298 fallback_hosts, and "hosts" in the smtp transport.
1299
1300PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1301 host errors such as "Connection refused".
1302
750af86e
PH
1303PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1304 authentication with radiusclient 0.4.9:
1305
1306 - Error returned from rc_read_config was caught wrongly
1307 - Username/password not passed on to radius server due to wrong length.
1308
1309 The presumption is that some radiusclient API changes for 4.51/PH/17
1310 were not taken care of correctly. The code is still untested by me (my
1311 Linux distribution still has 0.3.2 of radiusclient), but it was
1312 contributed by a Radius user.
1313
1314PH/24 When doing a callout, the value of $domain wasn't set correctly when
1315 expanding the "port" option of the smtp transport.
1316
4304270b
TK
1317TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1318 while reading a MIME header. Thanks to Tom Hughes for a patch.
1319
750af86e
PH
1320PH/24 Include config.h inside local_scan.h so that configuration settings are
1321 available.
1322
64ffc24f
PH
1323PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1324 that in an ACL for RCPT (for example), you can examine exactly what was
1325 received.
1326
5dd9625b
PH
1327PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1328 commands, but it was not correctly comparing the address with the actual
1329 client host address. Thus, it would show the EHLO address in Received:
1330 header lines when this was not necessary.
1331
5591031b
PH
1332PH/27 Added the % operator to ${eval:}.
1333
ba18e66a
PH
1334PH/28 Exim tries to create and chdir to its spool directory when it starts;
1335 it should be ignoring failures (because with -C, for example, it has lost
1336 privilege). It wasn't ignoring creation failures other than "already
1337 exists".
1338
9cec981f
PH
1339PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1340 -bV or -d is used.
1341
aa2b5c79
PH
1342PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1343 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1344 too many continuations, the temporary file was not being removed, and the
1345 return code was incorrect.
aa2b5c79 1346
48a53b7f
PH
1347PH/31 Missing "BOOL" in function definition in filtertest.c.
1348
1c59d63b
PH
1349PH/32 Applied Sieve patches from the maintainer.
1350
671012da
TK
1351TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1352
1509d3a8
PH
1353PH/33 Added "verify = not_blind".
1354
1355PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1356 Local/Makefile (with some defaults set). These are used in built scripts
1357 such as exicyclog, but they have never been used in the exim_install
1358 script (though there are many overriding facilities there). I have
1359 arranged that the exim_install script now takes note of these two
1360 settings.
1361
1362PH/35 Installed configuration files for Dragonfly.
1363
2fe1a124
PH
1364PH/36 When a locally submitted message by a trusted user did not contain a
1365 From: header, and the sender address was obtained from -f or from an SMTP
1366 MAIL command, and the trusted user did not use -F to supply a sender
1367 name, $originator_name was incorrectly used when constructing a From:
1368 header. Furthermore, $originator_name was used for submission mode
1369 messages from external hosts without From: headers in a similar way,
1370 which is clearly wrong.
1371
8800895a
PH
1372PH/37 Added control=suppress_local_fixups.
1373
ccfdb010
PH
1374PH/38 When log_selector = +received_sender was set, and the addition of the
1375 sender made the log line's construction buffer exactly full, or one byte
1376 less than full, an overflow happened when the terminating "\n" was
1377 subsequently added.
1378
1130bfb0
PH
1379PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1380 when the result of a list match is failure because a DNS lookup failed.
1381
ebcb507f
PH
1382PH/40 RM_COMMAND is now used in the building process.
1383
c35e155c
PH
1384PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1385 the "build-* directories that it finds.
1386
95d1f782
PH
1387PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1388 address in a domain literal was a prefix of an interface address.
1389
fd6de02e
PH
1390PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1391 when verifying a sender address, unless rewrite_headers is false.
1392
58de37c5
PH
1393PH/44 Wrote a long comment about why errors_to addresses are verified as
1394 recipients, not senders.
1395
261cf466
TF
1396TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1397 the ratelimit ACL was added.
1398
3ee512ff
PH
1399PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1400
e08c430f
PH
1401PH/46 Added extra information about PostgreSQL errors to the error string.
1402
bef5a11f
PH
1403PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1404 avoiding the need to install special zones in a real server. This is
1405 backwards compatible; if it can't find the fake resolver, it drops back.
1406 Thus, both old and new test suites can be run.
1407
7546de58
TF
1408TF/02 Added util/ratelimit.pl
1409
e5d5a95f
TF
1410TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1411 clock is set back in time.
1412
2e88a017
TF
1413TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1414 Candler <B.Candler@pobox.com>.
1415
a5f65aa4
TF
1416TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1417 OK for addresses that are the result of redirections.
1418
e7726cbf
PH
1419PH/48 A number of further additions for the benefit of the new test suite,
1420 including a fake gethostbyname() that interfaces to the fake DNS resolver
1421 (see PH/47 above).
1422
a7fdad5b
TF
1423TF/06 The fix for widen_domains has also been applied to qualify_single and
1424 search_parents which are the other dnslookup options that can cause
1425 header rewrites.
1426
6af56900
PH
1427PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1428 type ("H").
1429
0925ede6
PH
1430PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1431
66afa403
TF
1432TF/07 Exim produced the error message "an SRV record indicated no SMTP
1433 service" if it encountered an MX record with an empty target hostname.
1434 The message is now "an MX or SRV record indicated no SMTP service".
1435
0154e85a
TF
1436TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1437 if the DNS of the sending site is misconfigured. This is quite a
1438 common situation. This change restores the behaviour of treating a
1439 helo verification defer as a failure.
1440
16f12c76
PH
1441PH/51 If self=fail was set on a router, the bounce message did not include the
1442 actual error message.
1443
bbe902f0 1444
e5a9dba6
PH
1445Exim version 4.52
1446-----------------
1447
1448TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1449
22c3b60b
PH
1450PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1451 command itself ended in error, the underlying message about the transport
1452 filter timeout was being overwritten with the pipe command error. Now the
1453 underlying error message should be appended to the second error message.
1454
06a9b4b5
PH
1455TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1456
c1ac6996
PH
1457PH/02 Reduce the amount of output that "make" produces by default. Full output
1458 can still be requested.
1459
9c7a242c
PH
1460PH/03 The warning log line about a condition test deferring for a "warn" verb
1461 was being output only once per connection, rather than after each
1462 occurrence (because it was using the same function as for successful
1463 "warn" verbs). This seems wrong, so I have changed it.
1464
87ba3f5f
PH
1465TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1466 it should not have, which might have caused a crash in the right
1467 circumstances, but probably never did.
1468
1469PH/04 Installed a modified version of Tony Finch's patch to make submission
1470 mode fix the return path as well as the Sender: header line, and to
1471 add a /name= option so that you can make the user's friendly name appear
1472 in the header line.
1473
29aba418
TF
1474TF/03 Added the control = fakedefer ACL modifier.
1475
fe0dab11
TF
1476TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1477 Mark Lowes for thorough testing.
870f6ba8 1478
11d337a4
TK
1479TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1480
1481TK/03 Merged latest SRS patch from Miles Wilton.
1482
415c8f3b
PH
1483PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1484 with the definition in sysexits.h (which is #included earlier).
1485 Fortunately, Exim does not actually use EX_OK. The code used to try to
1486 preserve the sysexits.h value, by assumimg that macro definitions were
1487 scanned for macro replacements. I have been disabused of this notion,
1488 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1489
958541e9
PH
1490PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1491 in the smtp transport. When a block could not be written in a single
1492 write() function, the timeout was being re-applied to each part-write.
1493 This seems wrong - if the receiver was accepting one byte at a time it
1494 would take for ever. The timeout is now adjusted when this happens. It
1495 doesn't have to be particularly precise.
1496
c206415f
TK
1497TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1498 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1499
2a4be8f9
PH
1500PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1501 without a domain if the check to <postmaster@domain> fails.
1502
1cba11c5
SC
1503SC/01 Eximstats: added -xls and the ability to specify output files
1504 (patch written by Frank Heydlauf).
1505
1506SC/02 Eximstats: use FileHandles for outputing results.
1507
1508SC/03 Eximstats: allow any combination of xls, txt, and html output.
1509
1510SC/04 Eximstats: fixed display of large numbers with -nvr option
1511
1512SC/05 Eximstats: fixed merging of reports with empty tables.
1513
1514SC/06 Eximstats: added the -include_original_destination flag
1515
1516SC/07 Eximstats: removed tabs and trailing whitespace.
1517
1005d00e
TK
1518TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1519
1520TK/06 MBOX spool code: Add real "From " MBOX separator line
1521 so the .eml file is really in mbox format (even though
1522 most programs do not really care). Patch from Alex Miller.
1523
1524TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1525 The latter is generated from $received_to and is only set if the
1526 message has one envelope recipient. SA can use these headers,
1527 obviously out-of-the-box. Patch from Alex Miller.
1528
9b4768fa
PH
1529PH/08 The ${def test on a variable was returning false if the variable's
1530 value was "0", contrary to what the specification has always said!
1531 The result should be true unless the variable is empty.
1532
1533PH/09 The syntax error of a character other than { following "${if
1534 def:variable_name" (after optional whitespace) was not being diagnosed.
1535 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1536 accidental colon was present, for example, could give incorrect results.
1537
0d7eb84a
PH
1538PH/10 Tidied the code in a number of places where the st_size field of a stat()
1539 result is used (not including appendfile, where other changes are about
1540 to be made).
1541
1542PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1543 This involved changing a lot of size variables from int to off_t. It
1544 should work with maildirs and everything.
1545
40727bee
TK
1546TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1547 spamd dying while we are connected to it.
1548
554d2369
TF
1549TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1550 <jgh@wizmail.org>
1551
1f922db1
PH
1552PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1553 function for BDB 4.3.
1554
ef213c3b
PH
1555PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1556
8ac170f3
PH
1557PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1558 the sources for PCRE have been re-arranged and more files are now
1559 involved.
1560
b1c749bb
PH
1561PH/15 The code I had for printing potentially long long variables in PH/11
1562 above was not the best (it lost precision). The length of off_t variables
1563 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1564 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1565 to be "long long int" or "long int". This is needed for the internal
1566 formatting function string_vformat().
b1c749bb 1567
4aac9b49
PH
1568PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1569 the configuration file to be ":syslog", then the script "guesses" where
1570 the logs files are, rather than using the compiled in default. In our
1571 case the guess is not the same as the compiled default, so the script
1572 suddenly stopped working when I started to use syslog. The patch checks
1573 to see if log_file_path is "". If so, it attempts to read it from exim
1574 with no configuration file to get the compiled in version, before it
1575 falls back to the previous guessing code."
1576
294520c8
TK
1577TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1578 implementing BATV in an Exim configuration. See NewStuff for the gory
1579 details.
1580
5bd022fe
PH
1581PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1582 Makefile that are specific to HP-UX.
1583
90e9ce59
PH
1584PH/18 If the "use_postmaster" option was set for a recipient callout together
1585 with the "random" option, the postmaster address was used as the MAIL
1586 FROM address for the random test, but not for the subsequent recipient
1587 test. It is now used for both.
1588
5ea81592
PH
1589PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1590 patch removes a few documentation additions to RFC 3028, because the
1591 latest draft now contains them. It adds the new en;ascii-case comparator
1592 and a new error check for 8bit text in MIME parts. Comparator and
1593 require names are now matched exactly. I enabled the subaddress
1594 extension, but it is not well tested yet (read: it works for me)."
1595
c6c2dc1d
PH
1596PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1597 rework some of the code of TK/09 above to avoid the hardwired use of
1598 "%lld" and "long long". Replaced the call to snprintf() with a call to
1599 string_vformat().
1600
fffffe4c
PH
1601PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1602 records point to non-existent hosts", "retry timeout exceeded", and
1603 "retry time not reached for any host after a long failure period".
ca02eafb 1604
9a26b6b2
PH
1605PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1606 experimental DomainKeys support:
1607
1608 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1609 (2) On an error such as an illegally used "control", the wrong name for
1610 the control was given.
1611
1612 These problems did NOT occur unless DomainKeys support was compiled.
1613
4aee0225
PH
1614PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1615
32d668a5
PH
1616PH/24 Added ${if match_ip condition.
1617
8187c3f3
PH
1618PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1619 databases so that it will be absolutely obvious if a crash occurs in the
1620 DB library. This is a regular occurrence (often caused by mis-matched
1621 db.h files).
1622
ff790e47 1623PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1624 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1625 picked up on a user's system that detects such things. There doesn't seem
1626 to be a gcc warning option for this - only an attribute that has to be
1627 put on the function's prototype. It seems that in Fedora Core 4 they have
1628 set this on a number of new functions. No doubt there will be more in due
1629 course.
ff790e47 1630
5417f6d1
PH
1631PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1632 specify a transport. However, if an address that was verified by such a
1633 router was the subject of a callout, Exim crashed because it tried to
1634 read the rcpt_include_affixes from the non-existent transport. Now it
1635 just assumes that the setting of that option is false. This bug was
1636 introduced by 4.51/PH/31.
1637
59cf8544
PH
1638PH/28 Changed -d+all to exclude +memory, because that information is very
1639 rarely of interest, but it makes the output a lot bigger. People tend to
1640 do -d+all out of habit.
1641
e7ad8a65
PH
1642PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1643 code in os-type was giving problems when libc.so lives in lib64, like on
1644 x86_64 Fedora Core.
1645
ade42478
PH
1646PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1647 aren't the modern standard, and it seems that some systems' include files
1648 don't always have them. Exim was already checking for some of the newer
1649 ones like T_AAAA, and defining it itself. I've added checks for all the
1650 record types that Exim uses.
1651
182ad5cf
PH
1652PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1653 not automatically generating a new one, as it is supposed to. This
1654 prevented TLS from working. If the file did exist, but contained invalid
1655 data, a new version was generated, as expected. It was only the case of a
1656 non-existent file that was broken.
1657
b0d9fc80
TK
1658TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1659 with a change in libdomainkeys > 0.64.
1660
1661TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1662 from DNS. If the selector record carries the flag, it now has
1663 precedence over the domain-wide flag.
1664
1665TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1666
47c7a64a
PH
1667PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1668 the use of a port name that isn't defined in /etc/services) occurred, the
1669 message was deferred as in a normal delivery, and thus remained on the
1670 spool, instead of being failed because of the mua_wrapper setting. This
1671 is now fixed, and I tidied up some of the mua_wrapper messages at the
1672 same time.
1673
a388bce4
SC
1674SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1675 the messages in a hash of arrays rather than using individual hashes.
1676 This is a bit cleaner and results in dramatic memory savings, albeit
1677 at a slight CPU cost.
1678
1679SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1680 as requested by Marc Sherman.
1681
1682SC/10 Eximstats: added histograms for user specified patterns as requested
1683 by Marc Sherman.
1684
0793e4ed
SC
1685SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1686
c58b88df
PH
1687PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1688 fopen() in the content-scanning modules that did not already have it.
1689
e7ad8a65 1690
7982096b
PH
1691Exim version 4.51
1692-----------------
1693
1a46a8c5
PH
1694TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1695 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1696
2f079f46 1697TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1698
1699TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1700
1701PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1702 to test Sieve filters that use "vacation".
1703
1704PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1705 that changes the way the GnuTLS parameters are stored in the cache file.
1706 The new format can be generated externally. For backward compatibility,
1707 if the data in the cache doesn't make sense, Exim assumes it has read an
1708 old-format file, and it generates new data and writes a new file. This
1709 means that you can't go back to an older release without removing the
1710 file.
1711
1712PH/03 A redirect router that has both "unseen" and "one_time" set does not
1713 work if there are any delivery delays because "one_time" forces the
1714 parent to be marked "delivered", so its unseen clone is never tried
1715 again. For this reason, Exim now forbids the simultaneous setting of
1716 these two options.
1717
1718PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1719 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1720 entry if you want to know the details. The fix, however, neglected to
1721 consider the case when local delivery batching is involved. The test for
1722 "previously delivered" was not happening when checking to see if an
1723 address could be batched with a previous (undelivered) one; under
1724 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1725 address.
1a46a8c5
PH
1726
1727PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1728 in its include files, and this causes problems building Exim.
1729
1730PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1731 header_syntax) but Exim was just ignoring anything given after a slash.
1732 In particular, this caused confusion with an attempt to use "verify =
1733 reverse_host_lookup/defer_ok". An error is now given when options are
1734 supplied for verify items that do not have them. (Maybe reverse_host_
1735 lookup should have a defer_ok option, but that's a different point.)
1736
1737PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1738 defined by RFC 821) to 2048, because there were problems with some AUTH
1739 commands, and RFC 1869 says the size should be increased for extended
1740 SMTP commands that take arguments.
1741
1742PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1743 Finch).
1744
1745PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1746 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1747
49c2d5ea
PH
1748PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1749 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1750 whatever). Otherwise the password may appear in the log. Following change
1751 PH/42 below, there is no longer a chance of it appearing in a bounce
1752 message.
49c2d5ea 1753
bf759a8b
PH
1754PH/11 Installed exipick version 20050225.0 from John Jetmore.
1755
83364d30
PH
1756PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1757 of its addresses was ever tried. (Bugzilla bug #2.)
1758
7999bbd7
PH
1759PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1760 the result incorrectly in the debug output. (It correctly added a newline
1761 to what was transported.)
1762
7dbf77c9
PH
1763TF/01 Added $received_time.
1764
74e0617f
PH
1765PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1766 commented out examples of how to interface to a virus scanner and to
1767 SpamAssassin. Also added commented examples of av_scanner and
1768 spamd_address settings.
1769
2f079f46
PH
1770PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1771 and controls are allowed in which ACLs. There were a couple of minor
1772 errors. Some of the entries in the conditions table (which is a table of
1773 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1774 negation of where the condition IS allowed.
1775
8c841523
PH
1776PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1777
7766a4f0
PH
1778PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1779 header file does not have a version number, so I've had to invent a new
1780 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1781 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1782 radiusclient), but it was contributed by a Radius user.
1783
8b417f2c
PH
1784PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1785 files or directories, for OpenSSL.
1786
901f42cb
PH
1787PH/19 When an Exim process that is running as root has to create an Exim log
1788 file, it does so in a subprocess that runs as exim:exim so as to get the
1789 ownership right at creation (otherwise, other Exim processes might see
1790 the file with the wrong ownership). There was no test for failure of this
1791 fork() call, which would lead to the process getting stuck as it waited
1792 for a non-existent subprocess. Forks do occasionally fail when resources
1793 run out. I reviewed all the other calls to fork(); they all seem to check
1794 for failure.
1795
f9b9210e
PH
1796PH/20 When checking for unexpected SMTP input at connect time (before writing
1797 the banner), Exim was not dealing correctly with a non-positive return
1798 from the read() function. If the client had disconnected by this time,
1799 the result was a log entry for a synchronization error with an empty
1800 string after "input=" when read() returned zero. If read() returned -1
1801 (an event I could not check), uninitialized data bytes were printed.
1802 There were reports of junk text (parts of files, etc) appearing after
1803 "input=".
1804
54cdb463
PH
1805PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1806
cf00dad6
PH
1807PH/22 Added support for macro redefinition, and (re)definition in between
1808 driver and ACL definitions.
1809
acb1b346
PH
1810PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1811 forgetting to use the resulting value; it was using the unexpanded value.
1812
c5ddb310
PH
1813PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1814 hadn't been configured. The fix is from Juergen Kreileder, who
1815 understands it better than I do:
1816
1817 "Here's what I see happening with three configured cyrus_sasl
1818 authenticators configured (plain, login, cram-md5):
1819
1820 On startup auth_cyrus_sasl_init() gets called for each of these.
1821 This means three calls to sasl_listmech() without a specified mech_list.
1822 => SASL tests which mechs of all available mechs actually work
1823 => three warnings about OTP not working
1824 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1825
1826 With the patch, sasl_listmech() also gets called three times. But now
1827 SASL's mech_list option is set to the server_mech specified in the the
1828 authenticator. Or in other words, the answer from sasl_listmech()
1829 gets limited to just the mech you're testing for (which is different
1830 for each call.)
1831 => the return list contains just 'plain' or 'login', 'cram-md5' or
1832 nothing depending on the value of ob->server_mech.
1833
1834 I've just tested the patch: Authentication still works fine,
1835 unavailable mechs specified in the exim configuration are still
1836 caught, and the auth.log warnings about OTP are gone."
1837
31619da6
PH
1838PH/25 When debugging is enabled, the contents of the command line are added
1839 to the debugging output, even when log_selector=+arguments is not
1840 specified.
1841
bebaf0fc
PH
1842PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1843 answer is "GNU", and only if the return is "GNU/something" is the answer
1844 "Linux".
1845
475fe28a
PH
1846PH/27 $acl_verify_message is now set immediately after the failure of a
1847 verification in an ACL, and so is available in subsequent modifiers. In
1848 particular, the message can be preserved by coding like this:
1849
1850 warn !verify = sender
1851 set acl_m0 = $acl_verify_message
1852
1853 Previously, $acl_verify_message was set only while expanding "message"
1854 and "log_message" when a very denied access.
1855
7e8bec7a
PH
1856PH/28 Modified OS/os.c-Linux with
1857
1858 -#ifndef OS_LOAD_AVERAGE
1859 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1860
1861 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1862 nomenclature these days.)
1863
e4a89c47
PH
1864PH/29 Installed patch from the Sieve maintainer that adds the options
1865 sieve_useraddress and sieve_subaddress to the redirect router.
1866
5ca2a9a1
PH
1867PH/30 In these circumstances:
1868 . Two addresses routed to the same list of hosts;
1869 . First host does not offer TLS;
1870 . First host accepts first address;
1871 . First host gives temporary error to second address;
1872 . Second host offers TLS and a TLS session is established;
1873 . Second host accepts second address.
1874 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1875 and peerdn, if requested) that were in fact used only for the second
1876 address.
7e8bec7a 1877
c688b954
PH
1878PH/31 When doing a callout as part of verifying an address, Exim was not paying
1879 attention to any local part prefix or suffix that was matched by the
1880 router that accepted the address. It now behaves in the same way as it
1881 does for delivery: the affixes are removed from the local part unless
1882 rcpt_include_affixes is set on the transport.
1883
fed77020
PH
1884PH/32 Add the sender address, as F=<...>, to the log line when logging a
1885 timeout during the DATA phase of an incoming message.
1886
7fe1560f
PH
1887PH/33 Sieve envelope tests were broken for match types other than :is. I have
1888 applied a patch sanctioned by the Sieve maintainer.
c688b954 1889
ebb6e6d5
PH
1890PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1891 the uid or gid is negative. A case of a negative gid caused this to be
1892 noticed. The fix allows for either to be negative.
1893
9c4e8f60
PH
1894PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1895 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1896 overlooked.
1897
1898PH/36 The change PH/12 above was broken. Fixed it.
1899
d7174846
PH
1900PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1901 the grounds that routing the same address twice would always produce the
1902 same answer. This might have been true once, but it is certainly no
1903 longer true now. Routing a child address may depend on the previous
1904 routing that produced that child. Some complicated redirection strategies
1905 went wrong when messages had multiple recipients, and made Exim's
1906 behaviour dependent on the order in which the addresses were given.
1907
1908 I have moved the duplicate checking until after the routing is complete.
1909 Exim scans the addresses that are assigned to local and remote
1910 transports, and removes any duplicates. This means that more work will be
1911 done, as duplicates will always all be routed, but duplicates are
1912 presumably rare, so I don't expect this is of any significance.
1913
1914 For deliveries to pipes, files, and autoreplies, the duplicate checking
1915 still happens during the routing process, since they are not going to be
1916 routed further.
1917
cfe75fc3
PH
1918PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1919 It corrects a timeout issue with spamd. This is Ian's comment: "The
1920 background is that sometimes spamd either never reads data from a
1921 connection it has accepted, or it never writes response data. The exiscan
1922 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1923 blindly assumes that writes won't block so it may never time out."
1924
be22d70e
PH
1925PH/39 Allow G after quota size as well as K and M.
1926
0612b098
PH
1927PH/40 The value set for $authenticated_id in an authenticator may not contain
1928 binary zeroes or newlines because the value is written to log lines and
1929 to spool files. There was no check on this. Now the value is run through
1930 the string_printing() function so that such characters are converted to
1931 printable escape sequences.
1932
2e0c1448
PH
1933PH/41 $message_linecount is a new variable that contains the total number of
1934 lines in the message. Compare $body_linecount, which is the count for the
1935 body only.
1936
447d236c
PH
1937PH/42 Exim no longer gives details of delivery errors for specific addresses in
1938 bounce and delay warning messages, except in certain special cases, which
1939 are as follows:
1940
1941 (a) An SMTP error message from a remote host;
1942 (b) A message specified in a :fail: redirection;
1943 (c) A message specified in a "fail" command in a system filter;
1944 (d) A message specified in a FAIL return from the queryprogram router;
1945 (e) A message specified by the cannot_route_message router option.
1946
1947 In these cases only, Exim does include the error details in bounce and
1948 warning messages. There are also a few cases where bland messages such
1949 as "unrouteable address" or "local delivery error" are given.
1950
d20976dc
PH
1951PH/43 $value is now also set for the "else" part of a ${run expansion.
1952
f656d135
PH
1953PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1954 being worked on, but at least Exim now implements the latest version to
1955 play with."
1956
2e2a30b4
PH
1957PH/45 In a pipe transport, although a timeout while waiting for the pipe
1958 process to complete was treated as a delivery failure, a timeout while
1959 writing the message to the pipe was logged, but erroneously treated as a
1960 successful delivery. Such timeouts include transport filter timeouts. For
1961 consistency with the overall process timeout, these timeouts are now
1962 treated as errors, giving rise to delivery failures by default. However,
1963 there is now a new Boolean option for the pipe transport called
1964 timeout_defer, which, if set TRUE, converts the failures into defers for
1965 both kinds of timeout. A transport filter timeout is now identified in
1966 the log output.
1967
9176e9f0
PH
1968PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1969 systems where "make" and "gmake" are different, calling "gmake" at top
1970 level broke things. I've arranged for the value of $(MAKE) to be passed
1971 from the Makefile to this script so that it can call the same version of
1972 "make".
1973
7982096b 1974
bbe902f0
PH
1975A note about Exim versions 4.44 and 4.50
1976----------------------------------------
1977
1978Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1979changes of various kinds. As a consequence, a big documentation update was
1980needed. This delayed the release for rather longer than seemed good, especially
1981in the light of a couple of (minor) security issues. Therefore, the changes
1982that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1983release. So 4.44 and 4.50 are in effect two different branches that both start
1984from 4.43.
1985
1986I have left the 4.50 change log unchanged; it contains all the changes since
19874.43. The change log for 4.44 is below; many of its items are identical to
1988those for 4.50. This seems to be the most sensible way to preserve the
1989historical information.
1990
1991
f7b63901 1992Exim version 4.50
495ae4b0
PH
1993-----------------
1994
5fe762f6
PH
1995 1. Minor wording change to the doc/README.SIEVE file.
1996
139059f6 1997 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1998 computation of the current number of files was incorrect.
495ae4b0 1999
7086e875
PH
2000 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2001 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2002 place.
2003
35af9f61
PH
2004 4. Give more explanation in the error message when the command for a transport
2005 filter fails to execute.
2006
b668c215
PH
2007 5. There are several places where Exim runs a non-Exim command in a
2008 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2009 was being done only for the command run by the queryprogram router. It is
2010 now done for all such subprocesses. The other cases are: ${run, transport
2011 filters, and the commands run by the lmtp and pipe transports.
2012
a494b1e1
PH
2013 6. Added CONFIGURE_GROUP build-time option.
2014
2015 7. Some older OS have a limit of 256 on the maximum number of file
2016 descriptors. Exim was using setrlimit() to set 1000 as a large value
2017 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2018 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2019
c5fcb476
PH
2020 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2021 was an oversight, and furthermore, ever since the addition of extra
2022 controls (e.g. 4.43/32), the checks on when to allow different forms of
2023 "control" were broken. There should now be diagnostics for all cases when a
2024 control that does not make sense is encountered.
2025
69358f02
PH
2026 9. Added the /retain_sender option to "control=submission".
2027
5be20824
PH
202810. $recipients is now available in the predata ACL (oversight).
2029
eb2c0248
PH
203011. Tidy the search cache before the fork to do a delivery from a message
2031 received from the command line. Otherwise the child will trigger a lookup
2032 failure and thereby defer the delivery if it tries to use (for example) a
2033 cached ldap connection that the parent has called unbind on.
2034
2a3eea10
PH
203512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2036 of $address_data from the recipient verification was clobbered by the
2037 sender verification.
2038
203913. The value of address_data from a sender verification is now available in
2040 $sender_address_data in subsequent conditions in the ACL statement.
2041
23c7ff99
PH
204214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2043
4deaf07d
PH
204415. Added a new option "connect=<time>" to callout options, to set a different
2045 connection timeout.
2046
926e1192
PH
204716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2048 was its contents. (It was OK if the option was not defined at all.)
2049
650edc6f
PH
205017. A "Completed" log line is now written for messages that are removed from
2051 the spool by the -Mrm option.
2052
2c7db3f5
PH
205318. New variables $sender_verify_failure and $recipient_verify_failure contain
2054 information about exactly what failed.
2055
3d235903
PH
205619. Added -dd to debug only the daemon process.
2057
7c7ad977
PH
205820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2059 handles timeouts, both on the server side and network timeouts. Renamed the
2060 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2061
981756db
PH
206221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2063 It is now set to "smtps".
2064
d4eb88df
PH
206522. $host_address is now set to the target address during the checking of
2066 ignore_target_hosts.
2067
206823. When checking ignore_target_hosts for an ipliteral router, no host name was
2069 being passed; this would have caused $sender_host_name to have been used if
2070 matching the list had actually called for a host name (not very likely,
2071 since this list is usually IP addresses). A host name is now passed as
2072 "[x.x.x.x]".
2073
7d468ab8
PH
207424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2075 code that specifies a non-restarting handler (typically sigaction() in
2076 modern systems) in an attempt to fix a rare and obscure crash bug.
2077
207825. Narrowed the window for a race in the daemon that could cause it to ignore
2079 SIGCHLD signals. This is not a major problem, because they are used only to
2080 wake it up if nothing else does.
2081
62c0818f
PH
208226. A malformed maildirsize file could cause Exim to calculate negative values
2083 for the mailbox size or file count. Odd effects could occur as a result.
2084 The maildirsize information is now recalculated if the size or filecount
2085 end up negative.
2086
26034054
PH
208727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2088 support for a long time. Removed HAVE_SYS_VFS_H.
2089
af66f652
PH
209028. Installed the latest version of exipick from John Jetmore.
2091
90af77f4
PH
209229. In an address list, if the pattern was not a regular expression, an empty
2093 subject address (from a bounce message) matched only if the pattern was an
2094 empty string. Non-empty patterns were not even tested. This was the wrong
2095 because it is perfectly reasonable to use an empty address as part of a
2096 database query. An empty address is now tested by patterns that are
2097 lookups. However, all the other forms of pattern expect the subject to
2098 contain a local part and a domain, and therefore, for them, an empty
2099 address still always fails if the pattern is not itself empty.
2100
d8ef3577
PH
210130. Exim went into a mad DNS loop when attempting to do a callout where the
2102 host was specified on an smtp transport, and looking it up yielded more
2103 than one IP address.
2104
5cb8cbc6
PH
210531. Re-factored the code for checking spool and log partition space into a
2106 function that finds that data and another that does the check. The former
2107 is then used to implement four new variables: $spool_space, $log_space,
2108 $spool_inodes, and $log_inodes.
2109
14702f5b
PH
211032. The RFC2047 encoding function was originally intended for short strings
2111 such as real names; it was not keeping to the 75-character limit for
2112 encoded words that the RFC imposes. It now respects the limit, and
2113 generates multiple encoded words if necessary. To be on the safe side, I
2114 have increased the buffer size for the ${rfc2047: expansion operator from
2115 1024 to 2048 bytes.
2116
063b1e99
PH
211733. It is now permitted to omit both strings after an "if" condition; if the
2118 condition is true, the result is "true". As before, when the second string
2119 is omitted, a false condition yields an empty string. This makes it less
2120 cumbersome to write custom ACL and router conditions.
2121
652e1b65
PH
212234. Failure to deliver a bounce message always caused it to be frozen, even if
2123 there was an errors_to setting on the router. The errors_to setting is now
2124 respected.
2125
6f0c9a4f
PH
212635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2127 canonical form (fully expanded) before being placed in
2128 $sender_host_address.
2129
33397d19
PH
213036. The table in the code that translates DNS record types into text (T_A to
2131 "A" for instance) was missing entries for NS and CNAME. It is just possible
2132 that this could have caused confusion if both these types were looked up
2133 for the same domain, because the text type is used as part of Exim's
2134 per-process caching. But the chance of anyone hitting this buglet seems
2135 very small.
2136
7bb56e1f
PH
213737. The dnsdb lookup has been extended in a number of ways.
2138
2139 (1) There is a new type, "zns", which walks up the domain tree until it
2140 finds some nameserver records. It should be used with care.
2141
ea3bc19b
PH
2142 (2) There is a new type, "mxh", which is like "mx" except that it returns
2143 just the host names, not the priorities.
2144
2145 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2146 looked up. The behaviour when one of the lookups defers can be
2147 controlled by a keyword.
7bb56e1f 2148
ea3bc19b 2149 (4) It is now possible to specify the separator character for use when
7bb56e1f 2150 multiple records are returned.
33397d19 2151
0bcb2a0e
PH
215238. The dnslists ACL condition has been extended: it is now possible to supply
2153 a list of IP addresses and/or domains to be looked up in a particular DNS
2154 domain.
2155
2ac0e484
PH
215639. Added log_selector=+queue_time_overall.
2157
4e1fde53
PH
215840. When running the queue in the test harness, wait just a tad after forking a
2159 delivery process, to get repeatability of debugging output.
2160
de365ded
PH
216141. Include certificate and key file names in error message when GnuTLS fails
2162 to set them up, because the GnuTLS error message doesn't include the name
2163 of the failing file when there is a problem reading it.
2164
f05da2e8
PH
216542. Allow both -bf and -bF in the same test run.
2166
d6453af2
PH
216743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2168
f7b63901
PH
216944. The "Exiscan patch" is now merged into the mainline Exim source.
2170
217145. Sometimes the final signoff response after QUIT could fail to get
2172 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2173 < 0 before doing a fflush(). This bug looks as though it goes back to the
2174 introduction of TLS in release 3.20, but "sometimes" must have been rare
2175 because the tests only now provoked it.
2176
a444213a
PH
217746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2178 (this can affect the format of dates).
2179
0ec020ea
PH
218047. exim_tidydb, when checking for the continued existence of a message for
2181 which it has found a message-specific retry record, was not finding
2182 messages that were in split spool directories. Consequently, it was
2183 deleting retry records that should have stayed in existence.
2184
b1206957
PH
218548. Steve fixed some bugs in eximstats.
2186
218749. The SPA authentication driver was not abandoning authentication and moving
2188 on to the next authenticator when an expansion was forced to fail,
2189 contradicting the general specification for all authenticators. Instead it
2190 was generating a temporary error. It now behaves as specified.
2191
26dd5a95
PH
219250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2193 (the order specifies the preference for clients). The order is now AES256,
2194 AES128, 3DES, ARCFOUR128.
2195
343b2385
PH
219651. Small patch to Sieve code - explicitly set From: when generating an
2197 autoreply.
2198
1c5466b9
PH
219952. Exim crashed if a remote delivery caused a very long error message to be
2200 recorded - for instance if somebody sent an entire SpamAssassin report back
2201 as a large number of 550 error lines. This bug was coincidentally fixed by
2202 increasing the size of one of Exim's internal buffers (big_buffer) that
2203 happened as part of the Exiscan merge. However, to be on the safe side, I
2204 have made the code more robust (and fixed the comments that describe what
2205 is going on).
2206
55ee9ee3
PH
220753. Now that there can be additional text after "Completed" in log lines (if
2208 the queue_time_overall log selector is set), a one-byte patch to exigrep
2209 was needed to allow it to recognize "Completed" as not the last thing in
2210 the line.
2211
d38f8232
PH
221254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2213 patch that reportedly fixes this has been added. I am not expert enough to
2214 create a test for it. This is what the patch creator wrote:
2215
2216 "I found a little strange behaviour of ldap code when working with
2217 Windows 2003 AD Domain, where users was placed in more than one
2218 Organization Units. When I tried to give exim partial DN, the exit code
2219 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2220 But simultaneously result of request was absolutely normal ldap result,
2221 so I produce this patch..."
2222
3295e65b
PH
2223 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2224 REFERENCE, so I have modified the code to exclude the patch when that macro
2225 is not defined.
2226
7102e136
PH
222755. Some experimental protocols are using DNS PTR records for new purposes. The
2228 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2229 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2230 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2231 CAN-2005-0021
7102e136 2232
3ca0ba97
PH
223356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2234
c2bcbe20
PH
223557. Double the size of the debug message buffer (to 2048) so that more of very
2236 long debug lines gets shown.
2237
18ce445d
PH
223858. The exicyclog utility now does better if the number of log files to keep
2239 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2240
1f5b4c3d
PH
224159. Two changes related to the smtp_active_hostname option:
2242
2243 (1) $smtp_active_hostname is now available as a variable.
2244 (2) The default for smtp_banner uses $smtp_active_hostname instead
2245 of $primary_hostname.
2246
b975ba52
PH
224760. The host_aton() function is supposed to be passed a string that is known
2248 to be a valid IP address. However, in the case of IPv6 addresses, it was
2249 not checking this. This is a hostage to fortune. Exim now panics and dies
2250 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2251 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2252 components; fortuitously, this particular loophole had already been fixed
2253 by change 4.50/55 above.
2254
2255 If there are any other similar loopholes, the new check in host_aton()
2256 itself should stop them being exploited. The report I received stated that
2257 data on the command line could provoke the exploit when Exim was running as
2258 exim, but did not say which command line option was involved. All I could
2259 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2260 running as the user.
ea3a6f44 2261 CAN-2005-0021
85b87bc2
PH
2262
226361. There was a buffer overflow vulnerability in the SPA authentication code
2264 (which came originally from the Samba project). I have added a test to the
2265 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2266 CAN-2005-0022
b975ba52 2267
17ffcae7
PH
226862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2269 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2270
d95f9fdb
PH
227163. The daemon start-up calls getloadavg() while still root for those OS that
2272 need the first call to be done as root, but it missed one case: when
2273 deliver_queue_load_max is set with deliver_drop_privilege. This is
2274 necessary for the benefit of the queue runner, because there is no re-exec
2275 when deliver_drop_privilege is set.
2276
86b8287f
PH
227764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2278 This has been fixed.
2279
60dc5e56
PH
228065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2281 was in use, was not putting the data itself into the right store pool;
2282 consequently, it could be overwritten for a subsequent message in the same
2283 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2284 the caching.)
2285
533244af
PH
228666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2287
a5a28604
PH
228867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2289 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2290 the function were treating the return as a boolean value, which happened to
2291 work because 0=false and not-0=true, but is not correct code.
2292
7e634d24
PH
229368. The host_aton() function was not handling scoped IPv6 addresses (those
2294 with, for example, "%eth0" on the end) correctly.
2295
3e11c26b
PH
229669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2297 negated items (that is, ~something) in unsigned ints. Some compilers
2298 apparently mutter when there is no cast.
2299
6729cf78
PH
230070. If an address verification called from an ACL failed, and did not produce a
2301 user-specific message (i.e. there was only a "system" message), nothing was
2302 put in $acl_verify_message. In this situation, it now puts the system
2303 message there.
2304
00f00ca5
PH
230571. Change 4.23/11 added synchronization checking at the start of an SMTP
2306 session; change 4.31/43 added the unwanted input to the log line - except
2307 that it did not do this in the start of session case. It now does.
2308
c9bdd01c
PH
230972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2310 This is wrong and can cause the other end to generate a synchronization
2311 error if it is another Exim or anything else that does the synchronization
2312 check. A QUIT command is no longer sent after a timeout.
2313
d43194df
PH
231473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2315 during host lookups.
2316
fe5b5d0b
PH
231774. The defer_ok option of callout verification was not working if it was used
2318 when verifying addresses in header lines, that is, for this case:
2319
2320 verify = header_sender/callout=defer_ok
2321
76a2d7ba
PH
232275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2323 those file descriptors could be used for SMTP connections. If anything
2324 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2325 could be sent to the SMTP client, causing chaos. The daemon now opens
2326 stdin, stdout, and stderr to /dev/null when it puts itself into the
2327 background.
2328
232976. Arrange for output from Perl's "warn" command to be written to Exim's main
2330 log by default. The user can override this with suitable Perl magic.
2331
04f7d5b9
PH
233277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2333 the log message when discard triggers, was not working for the DATA ACL or
2334 for the non-SMTP ACL.
2335
bc60667e
PH
233678. Error message wording change in sieve.c.
2337
bb6e88ff
PH
233879. If smtp_accept_max_per_host was set, the number of connections could be
2339 restricted to fewer than expected, because the daemon was trying to set up
2340 a new connection before checking whether the processes handling previous
2341 connections had finished. The check for completed processes is now done
2342 earlier. On busy systems, this bug wouldn't be noticed because something
2343 else would have woken the daemon, and it would have reaped the completed
2344 process earlier.
2345
1e70f85b
PH
234680. If a message was submitted locally by a user whose login name contained one
2347 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2348 It caused a spool format error. I have fixed the spool reading code. A
2349 related problem was that the "from" clause in the Received: line became
2350 illegal because of the space(s). It is now covered by ${quote_local_part.
2351
235281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2353 tables).
2354
4e01f9d6
PH
235582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2356
1ee1cef2
PH
235783. Patch from Sieve maintainer to fix unterminated string problem in
2358 "vacation" handling.
2359
6e2b4ccc
PH
236084. Some minor changes to the Linux configuration files to help with other
2361 OS variants using glibc.
2362
8e669ac1
PH
236385. One more patch for Sieve to update vacation handling to latest spec.
2364
495ae4b0 2365
bbe902f0
PH
2366----------------------------------------------------
2367See the note above about the 4.44 and 4.50 releases.
2368----------------------------------------------------
2369
2370
2371Exim version 4.44
2372-----------------
2373
2374 1. Change 4.43/35 introduced a bug that caused file counts to be
2375 incorrectly computed when quota_filecount was set in an appendfile
2376 transport
2377
2378 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2379 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2380 place.
2381
2382 3. Give more explanation in the error message when the command for a transport
2383 filter fails to execute.
2384
2385 4. There are several places where Exim runs a non-Exim command in a
2386 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2387 was being done only for the command run by the queryprogram router. It is
2388 now done for all such subprocesses. The other cases are: ${run, transport
2389 filters, and the commands run by the lmtp and pipe transports.
2390
2391 5. Some older OS have a limit of 256 on the maximum number of file
2392 descriptors. Exim was using setrlimit() to set 1000 as a large value
2393 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2394 systems. I've change it so that if it can't get 1000, it tries for 256.
2395
2396 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2397 was an oversight, and furthermore, ever since the addition of extra
2398 controls (e.g. 4.43/32), the checks on when to allow different forms of
2399 "control" were broken. There should now be diagnostics for all cases when a
2400 control that does not make sense is encountered.
2401
2402 7. $recipients is now available in the predata ACL (oversight).
2403
2404 8. Tidy the search cache before the fork to do a delivery from a message
2405 received from the command line. Otherwise the child will trigger a lookup
2406 failure and thereby defer the delivery if it tries to use (for example) a
2407 cached ldap connection that the parent has called unbind on.
2408
2409 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2410 of $address_data from the recipient verification was clobbered by the
2411 sender verification.
2412
241310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2414 was its contents. (It was OK if the option was not defined at all.)
2415
241611. A "Completed" log line is now written for messages that are removed from
2417 the spool by the -Mrm option.
2418
241912. $host_address is now set to the target address during the checking of
2420 ignore_target_hosts.
2421
242213. When checking ignore_target_hosts for an ipliteral router, no host name was
2423 being passed; this would have caused $sender_host_name to have been used if
2424 matching the list had actually called for a host name (not very likely,
2425 since this list is usually IP addresses). A host name is now passed as
2426 "[x.x.x.x]".
2427
242814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2429 code that specifies a non-restarting handler (typically sigaction() in
2430 modern systems) in an attempt to fix a rare and obscure crash bug.
2431
243215. Narrowed the window for a race in the daemon that could cause it to ignore
2433 SIGCHLD signals. This is not a major problem, because they are used only to
2434 wake it up if nothing else does.
2435
243616. A malformed maildirsize file could cause Exim to calculate negative values
2437 for the mailbox size or file count. Odd effects could occur as a result.
2438 The maildirsize information is now recalculated if the size or filecount
2439 end up negative.
2440
244117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2442 support for a long time. Removed HAVE_SYS_VFS_H.
2443
ea3a6f44 244418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2445
244619. Allow an empty sender to be matched against a lookup in an address list.
2447 Previously the only cases considered were a regular expression, or an
2448 empty pattern.
2449
245020. Exim went into a mad DNS lookup loop when doing a callout where the
2451 host was specified on the transport, if the DNS lookup yielded more than
2452 one IP address.
2453
ea3a6f44
NM
245421. The RFC2047 encoding function was originally intended for short strings
2455 such as real names; it was not keeping to the 75-character limit for
2456 encoded words that the RFC imposes. It now respects the limit, and
2457 generates multiple encoded words if necessary. To be on the safe side, I
2458 have increased the buffer size for the ${rfc2047: expansion operator from
2459 1024 to 2048 bytes.
bbe902f0 2460
ea3a6f44
NM
246122. Failure to deliver a bounce message always caused it to be frozen, even if
2462 there was an errors_to setting on the router. The errors_to setting is now
2463 respected.
bbe902f0
PH
2464
246523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2466 canonical form (fully expanded) before being placed in
2467 $sender_host_address.
2468
246924. Updated eximstats to version 1.33
2470
ea3a6f44
NM
247125. Include certificate and key file names in error message when GnuTLS fails
2472 to set them up, because the GnuTLS error message doesn't include the name
2473 of the failing file when there is a problem reading it.
bbe902f0
PH
2474
247526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2476 As per change 25.
bbe902f0 2477
ea3a6f44
NM
247827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2479 (this can affect the format of dates).
bbe902f0 2480
ea3a6f44
NM
248128. exim_tidydb, when checking for the continued existence of a message for
2482 which it has found a message-specific retry record, was not finding
2483 messages that were in split spool directories. Consequently, it was
2484 deleting retry records that should have stayed in existence.
bbe902f0
PH
2485
248629. eximstats updated to version 1.35
2487 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2488 1.35 - bugfix such that pie charts by volume are generated correctly
2489
ea3a6f44
NM
249030. The SPA authentication driver was not abandoning authentication and moving
2491 on to the next authenticator when an expansion was forced to fail,
2492 contradicting the general specification for all authenticators. Instead it
2493 was generating a temporary error. It now behaves as specified.
bbe902f0 2494
ea3a6f44
NM
249531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2496 (the order specifies the preference for clients). The order is now AES256,
2497 AES128, 3DES, ARCFOUR128.
bbe902f0 2498
ea3a6f44
NM
249931. Small patch to Sieve code - explicitly set From: when generating an
2500 autoreply.
bbe902f0 2501
ea3a6f44
NM
250232. Exim crashed if a remote delivery caused a very long error message to be
2503 recorded - for instance if somebody sent an entire SpamAssassin report back
2504 as a large number of 550 error lines. This bug was coincidentally fixed by
2505 increasing the size of one of Exim's internal buffers (big_buffer) that
2506 happened as part of the Exiscan merge. However, to be on the safe side, I
2507 have made the code more robust (and fixed the comments that describe what
2508 is going on).
bbe902f0 2509
ea3a6f44
NM
251033. Some experimental protocols are using DNS PTR records for new purposes. The
2511 keys for these records are domain names, not reversed IP addresses. The
2512 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2513 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2514 CAN-2005-0021
2515
ea3a6f44
NM
251634. The host_aton() function is supposed to be passed a string that is known
2517 to be a valid IP address. However, in the case of IPv6 addresses, it was
2518 not checking this. This is a hostage to fortune. Exim now panics and dies
2519 if the condition is not met. A case was found where this could be provoked
2520 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2521 components; fortuitously, this particular loophole had already been fixed
2522 by change 4.50/55 or 4.44/33 above.
2523
2524 If there are any other similar loopholes, the new check in host_aton()
2525 itself should stop them being exploited. The report I received stated that
2526 data on the command line could provoke the exploit when Exim was running as
2527 exim, but did not say which command line option was involved. All I could
2528 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2529 running as the user.
bbe902f0
PH
2530 CAN-2005-0021
2531
ea3a6f44
NM
253235. There was a buffer overflow vulnerability in the SPA authentication code
2533 (which came originally from the Samba project). I have added a test to the
2534 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2535 CAN-2005-0022
2536
ea3a6f44
NM
253736. The daemon start-up calls getloadavg() while still root for those OS that
2538 need the first call to be done as root, but it missed one case: when
2539 deliver_queue_load_max is set with deliver_drop_privilege. This is
2540 necessary for the benefit of the queue runner, because there is no re-exec
2541 when deliver_drop_privilege is set.
bbe902f0 2542
ea3a6f44
NM
254337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2544 was in use, was not putting the data itself into the right store pool;
2545 consequently, it could be overwritten for a subsequent message in the same
2546 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2547 the caching.)
bbe902f0 2548
ea3a6f44
NM
254938. Sometimes the final signoff response after QUIT could fail to get
2550 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2551 < 0 before doing a fflush(). This bug looks as though it goes back to the
2552 introduction of TLS in release 3.20, but "sometimes" must have been rare
2553 because the tests only now provoked it.
bbe902f0
PH
2554
2555
495ae4b0
PH
2556Exim version 4.43
2557-----------------
2558
2559 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2560 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2561 Now it returns an integer. A number of calls were still expecting a T/F
2562 return. Fortuitously, in all cases, the tests worked in OK situations,
2563 which is the norm. However, things would have gone wrong on any write
2564 failures on the smtp file descriptor. This function is used when sending
2565 messages over SMTP and also when doing verify callouts.
2566
2567 2. When Exim is called to do synchronous delivery of a locally submitted
2568 message (the -odf or -odi options), it no longer closes stderr before doing
2569 the delivery.
2570
2571 3. Implemented the mua_wrapper option.
2572
2573 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2574
2575 5. Implemented the functions header_remove(), header_testname(),
2576 header_add_at_position(), and receive_remove_recipient(), and exported them
2577 to local_scan().
2578
2579 6. If an ACL "warn" statement specified the addition of headers, Exim already
2580 inserted X-ACL-Warn: at the start if there was no header name. However, it
2581 was not making this test for the second and subsequent header lines if
2582 there were newlines in the string. This meant that an invalid header could
2583 be inserted if Exim was badly configured.
2584
2585 7. Allow an ACL "warn" statement to add header lines at the start or after all
2586 the Received: headers, as well as at the end.
2587
2588 8. Added the rcpt_4xx retry error code.
2589
2590 9. Added postmaster_mailfrom=xxx to callout verification option.
2591
259210. Added mailfrom=xxxx to the callout verification option, for verify=
2593 header_sender only.
2594
259511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2596 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2597
259812. Inserted some casts to stop certain compilers warning when using pointer
2599 differences as field lengths or precisions in printf-type calls (mostly
2600 affecting debugging statements).
2601
260213. Added optional readline() support for -be (dynamically loaded).
2603
260414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2605 same clock tick as a message's arrival, so that its received time was the
2606 same as the "first fail" time on the retry record, and that message
2607 remained on the queue past the ultimate address timeout, every queue runner
2608 would try a delivery (because it was past the ultimate address timeout) but
2609 after another failure, the ultimate address timeout, which should have then
2610 bounced the address, did not kick in. This was a "< instead of <=" error;
2611 in most cases the first failure would have been in the next clock tick
2612 after the received time, and all would be well.
2613
261415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2615 being recognized when the domain list was tested by the match_domain
2616 condition in an expansion string.
2617
261816. Added the ${str2b64: operator.
2619
262017. Exim was always calling setrlimit() to set a large limit for the number of
2621 processes, without checking whether the existing limit was already
2622 adequate. (It did check for the limit on file descriptors.) Furthermore,
2623 errors from getrlimit() and setrlimit() were being ignored. Now they are
2624 logged to the main and panic logs, but Exim does carry on, to try to do its
2625 job under whatever limits there are.
2626
262718. Imported PCRE 5.0.
2628
262919. Trivial typo in log message " temporarily refused connection" (the leading
2630 space).
2631
263220. If the log selector return_path_on_delivery was set and an address was
2633 redirected to /dev/null, the delivery process crashed because it assumed
2634 that a return path would always be set for a "successful" delivery. In this
2635 case, the whole delivery is bypassed as an optimization, and therefore no
2636 return path is set.
2637
263821. Internal re-arrangement: the function for sending a challenge and reading
2639 a response while authentication was assuming a zero-terminated challenge
2640 string. It's now changed to take a pointer and a length, to allow for
2641 binary data in such strings.
2642
264322. Added the cyrus_sasl authenticator (code supplied by MBM).
2644
264523. Exim was not respecting finduser_retries when seeking the login of the
2646 uid under which it was called; it was always trying 10 times. (The default
2647 setting of finduser_retries is zero.) Also, it was sleeping after the final
2648 failure, which is pointless.
2649
265024. Implemented tls_on_connect_ports.
2651
265225. Implemented acl_smtp_predata.
2653
265426. If the domain in control=submission is set empty, Exim assumes that the
2655 authenticated id is a complete email address when it generates From: or
2656 Sender: header lines.
2657
265827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2659 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2660 chown and chgrp in /bin and hostname in /usr/bin.
2661
266228. Exim was keeping the "process log" file open after each use, just as it
2663 does for the main log. This opens the possibility of it remaining open for
2664 long periods when the USR1 signal hits a daemon. Occasional processlog
2665 errors were reported, that could have been caused by this. Anyway, it seems
2666 much more sensible not to leave this file open at all, so that is what now
2667 happens.
2668
266929. The long-running daemon process does not normally write to the log once it
2670 has entered its main loop, and it closes the log before doing so. This is
2671 so that log files can straightforwardly be renamed and moved. However,
2672 there are a couple of unusual error situations where the daemon does write
2673 log entries, and I had neglected to close the log afterwards.
2674
267530. The text of an SMTP error response that was received during a remote
2676 delivery was being truncated at 512 bytes. This is too short for some of
2677 the long messages that one sometimes sees. I've increased the limit to
2678 1024.
2679
268031. It is now possible to make retry rules that apply only when a message has a
2681 specific sender, in particular, an empty sender.
2682
268332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2684 it possible to be selective about when SMTP synchronization is enforced.
2685
268633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2687
268832. Implemented hosts_connection_nolog.
2689
269033. Added an ACL for QUIT.
2691
269234. Setting "delay_warning=" to disable warnings was not working; it gave a
2693 syntax error.
2694
269535. Added mailbox_size and mailbox_filecount to appendfile.
2696
269736. Added control = no_multiline_responses to ACLs.
2698
269937. There was a bug in the logic of the code that waits for the clock to tick
2700 in the case where the clock went backwards by a substantial amount such
2701 that the microsecond fraction of "now" was more than the microsecond
2702 fraction of "then" (but the whole seconds number was less).
2703
270438. Added support for the libradius Radius client library this is found on
2705 FreeBSD (previously only the radiusclient library was supported).
2706
2707
2708Exim version 4.42
2709-----------------
2710
2711 1. When certain lookups returned multiple values in the form name=value, the
2712 quoting of the values was not always being done properly. Specifically:
2713 (a) If the value started with a double quote, but contained no whitespace,
2714 it was not quoted.
2715 (b) If the value contained whitespace other than a space character (i.e.
2716 tabs or newlines or carriage returns) it was not quoted.
2717 This fix has been applied to the mysql and pgsql lookups by writing a
2718 separate quoting function and calling it from the lookup code. The fix
2719 should probably also be applied to nisplus, ibase and oracle lookups, but
2720 since I cannot test any of those, I have not disturbed their existing code.
2721
2722 2. A hit in the callout cache for a specific address caused a log line with no
2723 reason for rejecting RCPT. Now it says "Previous (cached) callout
2724 verification failure".
2725
2726 3. There was an off-by-one bug in the queryprogram router. An over-long
2727 return line was truncated at 256 instead of 255 characters, thereby
2728 overflowing its buffer with the terminating zero. As well as fixing this, I
2729 have increased the buffer size to 1024 (and made a note to document this).
2730
2731 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2732 when Exim is waiting for an SMTP response from a remote server, Exim
2733 restarts its select() call on the socket, thereby resetting its timeout.
2734 This is not a problem when such interrupts are rare. Somebody set up a cron
2735 job to run exiwhat every 2 minutes, which is less than the normal select()
2736 timeout (5 or 10 minutes). This meant that the select() timeout never
2737 kicked in because it was always reset. I have fixed this by comparing the
2738 time when an interrupt arrives with the time at the start of the first call
2739 to select(). If more time than the timeout has elapsed, the interrupt is
2740 treated as a timeout.
2741
2742 5. Some internal re-factoring in preparation for the addition of Sieve
2743 extensions (by MH). In particular, the "personal" test is moved to a
2744 separate function, and given an option for scanning Cc: and Bcc: (which is
2745 not set for Exim filters).
2746
2747 6. When Exim created an email address using the login of the caller as the
2748 local part (e.g. when creating a From: or Sender: header line), it was not
2749 quoting the local part when it contained special characters such as @.
2750
2751 7. Installed new OpenBSD configuration files.
2752
2753 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2754 try to make them clearer.
2755
2756 9. Callout options, other than the timeout value, were being ignored when
2757 verifying sender addresses in header lines. For example, when using
2758
2759 verify = header_sender/callout=no_cache
2760
2761 the cache was (incorrectly) being used.
2762
276310. Added a missing instance of ${EXE} to the exim_install script; this affects
2764 only the Cygwin environment.
2765
276611. When return_path_on_delivery was set as a log selector, if different remote
2767 addresses in the same message used different return paths and parallel
2768 remote delivery occurred, the wrong values would sometimes be logged.
2769 (Whenever a remote delivery process finished, the return path value from
2770 the most recently started remote delivery process was logged.)
2771
277212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2773 lines when AUTH and/or TLS are in use. This is the "received protocol"
2774 field. Exim used to use "asmtp" for authenticated SMTP, without any
2775 indication (in the protocol name) for TLS use. Now it follows the RFC and
2776 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2777 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2778 names appear in log lines as well as in Received: header lines.
2779
278013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2781 extensions, and comparison tests, and to fix some bugs.
2782
278314. Changes to the "personal" filter test:
2784
2785 (1) The test was buggy in that it was just doing the equivalent of
2786 "contains" tests on header lines. For example, if a user's address was
2787 anne@some.where, the "personal" test would incorrectly be true for
2788
2789 To: susanne@some.where
2790
2791 This test is now done by extracting each address from the header in turn,
2792 and checking the entire address. Other tests that are part of "personal"
2793 are now done using regular expressions (for example, to check local parts
2794 of addresses in From: header lines).
2795
2796 (2) The list of non-personal local parts in From: addresses has been
2797 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2798 taken from the Sieve specification recommendations.
2799
2800 (3) If the message contains any header line starting with "List-" it is
2801 treated as non-personal.
2802
2803 (4) The test for "circular" in the Subject: header line has been removed
2804 because it now seems ill-conceived.
2805
280615. Minor typos in src/EDITME comments corrected.
2807
280816. Installed latest exipick from John Jetmore.
2809
281017. If headers_add on a router specified a text string that was too long for
2811 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2812 of string_sprintf() is now avoided.
2813
281418. $message_body_size was not set (it was always zero) when running the DATA
2815 ACL and the local_scan() function.
2816
281719. For the "mail" command in an Exim filter, no default was being set for
2818 the once_repeat time, causing a random time value to be used if "once" was
2819 specified. (If the value happened to be <= 0, no repeat happened.) The
2820 default is now 0s, meaning "never repeat". The "vacation" command was OK
2821 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2822 (I found it when inspecting the code).
2823
282420. There is now an overall timeout for performing a callout verification. It
2825 defaults to 4 times the callout timeout, which applies to individual SMTP
2826 commands during the callout. The overall timeout applies when there is more
2827 than one host that can be tried. The timeout is checked before trying the
2828 next host. This prevents very long delays if there are a large number of
2829 hosts and all are timing out (e.g. when the network connections are timing
2830 out). The value of the overall timeout can be changed by specifying an
2831 additional sub-option for "callout", called "maxwait". For example:
2832
2833 verify = sender/callout=5s,maxwait=20s
2834
283521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2836 to the end before writing, but this should make it even safer).
2837
283822. Exim was forgetting that it had advertised PIPELINING for the second and
2839 subsequent messages on an SMTP connection. It was also not resetting its
2840 memory on STARTTLS and an internal HELO.
2841
284223. When Exim logs an SMTP synchronization error within a session, it now
2843 records whether PIPELINING has been advertised or not.
2844
284524. Added 3 instances of "(long int)" casts to time_t variables that were being
2846 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2847 rather than long int.
2848
284925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2850
285126. Added the never_mail option to autoreply.
2852
2853
2854Exim version 4.41
2855-----------------
2856
2857 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2858 crash if the getsockname() call failed; this can happen if a connection is
2859 closed very soon after it is established. The problem was simply in the
2860 order in which certain operations were done, causing Exim to try to write
2861 to the SMTP stream before it had set up the file descriptor. The bug has
2862 been fixed by making things happen in the correct order.
2863
2864
2865Exim version 4.40
2866-----------------
2867
2868 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2869 before the connection was closed, thus losing the rejection response.
2870
2871 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2872 some early Solaris releases, but causes trouble in current releases where
2873 socklen_t is defined.
2874
2875 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2876 always exist.
2877
2878 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2879 configured.
2880
2881 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2882 that releasing the top of it at the end releases what was used for sub-
2883 expansions (unless the block got too big). However, discard this block if
2884 the first thing is a variable or header, so that we can use its block when
2885 it is dynamic (useful for very large $message_headers, for example).
2886
2887 6. Lookups now cache *every* query, not just the most recent. A new, separate
2888 store pool is used for this. It can be recovered when all lookup caches are
2889 flushed. Lookups now release memory at the end of their result strings.
2890 This has involved some general refactoring of the lookup sources.
2891
2892 7. Some code has been added to the store_xxx() functions to reduce the amount
2893 of flapping under certain conditions.
2894
2895 8. log_incoming_interface used to affect only the <= reception log lines. Now
2896 it causes the local interface and port to be added to several more SMTP log
2897 lines, for example "SMTP connection from", and rejection lines.
2898
2899 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2900
290110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2902
290311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2904 could be overwritten at the end of the current message (or the start of a
2905 new message if it was set in a HELO ACL). The value is now preserved for
2906 the duration of the SMTP connection.
2907
290812. If a transport had a headers_rewrite setting, and a matching header line
2909 contained an unqualified address, that address was qualified, even if it
2910 did not match any rewriting rules. The underlying bug was that the values
2911 of the flags that permit the existence of unqualified sender and recipient
2912 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2913 non-local messages, and by -bnq for local messages) were not being
2914 preserved with the message after it was received.
2915
291613. When Exim was logging an SMTP synchronization error, it could sometimes log
2917 "next input=" as part of the text comprising the host identity instead of
2918 the correct text. The code was using the same buffer for two different
2919 strings. However, depending on which order the printing function evaluated
2920 its arguments, the bug did not always show up. Under Linux, for example, my
2921 test suite worked just fine.
2922
292314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2924 doesn't work with some older versions of Perl. It has been changed to "my",
2925 which in any case is probably the better facility to use.
2926
292715. A really picky compiler found some instances of statements for creating
2928 error messages that either had too many or two few arguments for the format
2929 string.
2930
293116. The size of the buffer for calls to the DNS resolver has been increased
2932 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2933 for addresses that have a lot of PTR records. This alleviates a problem; it
2934 does not fully solve it.
2935
293617. A dnsdb lookup for PTR records that receives more data than will fit in the
2937 buffer now truncates the list and logs the incident, which is the same
2938 action as happens when Exim is looking up a host name and its aliases.
2939 Previously in this situation something unpredictable would happen;
2940 sometimes it was "internal error: store_reset failed".
2941
294218. If a server dropped the connection unexpectedly when an Exim client was
2943 using GnuTLS and trying to read a response, the client delivery process
2944 crashed while trying to generate an error log message.
2945
294619. If a "warn" verb in an ACL added multiple headers to a message in a single
2947 string, for example:
2948
2949 warn message = H1: something\nH2: something
2950
2951 the text was added as a single header line from Exim's point of view
2952 though it ended up OK in the delivered message. However, searching for the
2953 second and subsequent header lines using $h_h2: did not work. This has been
2954 fixed. Similarly, if a system filter added multiple headers in this way,
2955 the routers could not see them.
2956
295720. Expanded the error message when iplsearch is called with an invalid key to
2958 suggest using net-iplsearch in a host list.
2959
296021. When running tests using -bh, any delays imposed by "delay" modifiers in
2961 ACLs are no longer actually imposed (and a message to that effect is
2962 output).
2963
296422. If a "gecos" field in a passwd entry contained escaped characters, in
2965 particular, if it contained a \" sequence, Exim got it wrong when building
2966 a From: or a Sender: header from that name. A second bug also caused
2967 incorrect handling when an unquoted " was present following a character
2968 that needed quoting.
2969
297023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2971 was not being matched caselessly.
2972
297324. Arranged for all hyphens in the exim.8 source to be escaped with
2974 backslashes.
2975
297625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2977 properly. Recipient callout cache records were still being keyed to include
2978 the sender, even when use_sender was set false. This led to far more
2979 callouts that were necessary. The sender is no longer included in the key
2980 when use_sender is false.
2981
298226. Added "control = submission" modifier to ACLs.
2983
298427. Added the ${base62d: operator to decode base 62 numbers.
2985
298628. dnsdb lookups can now access SRV records.
2987
298829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2989 the configuration file.
2990
299130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2992 (-v) mode. This makes the output for a verbose queue run more intelligible.
2993
299431. Added a use_postmaster feature to recipient callouts.
2995
299632. Added the $body_zerocount variable, containing the number of binary zero
2997 bytes in the message body.
2998
299933. The time of last modification of the "new" subdirectory is now used as the
3000 "mailbox time last read" when there is a quota error for a maildir
3001 delivery.
3002
300334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3004
300535. Added +ignore_unknown as a special item in host lists.
3006
300736. Code for decoding IPv6 addresses in host lists is now included, even if
3008 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3009 address was recognized as an IP address, but was then not correctly decoded
3010 into binary, causing unexpected and incorrect effects when compared with
3011 another IP address.
3012
3013
3014Exim version 4.34
3015-----------------
3016
3017 1. Very minor rewording of debugging text in manualroute to say "list of
3018 hosts" instead of "hostlist".
3019
3020 2. If verify=header_syntax was set, and a header line with an unqualified
3021 address (no domain) and a large number of spaces between the end of the
3022 name and the colon was received, the reception process suffered a buffer
3023 overflow, and (when I tested it) crashed. This was caused by some obsolete
3024 code that should have been removed. The fix is to remove it!
3025
3026 3. When running in the test harness, delay a bit after writing a bounce
3027 message to get a bit more predictability in the log output.
3028
3029 4. Added a call to search_tidyup() just before forking a reception process. In
3030 theory, someone could use a lookup in the expansion of smtp_accept_max_
3031 per_host which, without the tidyup, could leave open a database connection.
3032
3033 5. Added the variables $recipient_data and $sender_data which get set from a
3034 lookup success in an ACL "recipients" or "senders" condition, or a router
3035 "senders" option, similar to $domain_data and $local_part_data.
3036
3037 6. Moved the writing of debug_print from before to after the "senders" test
3038 for routers.
3039
3040 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3041 problems for message scanning, either using a data ACL, or using
3042 local_scan() because the Received: header was not generated till after they
3043 were called (in order to set the time as the time of reception completion).
3044 I have revised the way this works. The header is now generated after the
3045 body is received, but before the ACL or local_scan() are called. After they
3046 are run, the timestamp in the header is updated.
3047
3048
3049Exim version 4.33
3050-----------------
3051
3052 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3053 before starting a queue runner without re-exec. This happened only when
3054 deliver_drop_privilege was set or when the Exim user was set to root. The
3055 effect of the bug was that timeouts during subsequent deliveries caused
3056 crashes instead of being properly handled. The handler is now left at its
3057 default (and expected) setting.
3058
3059 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3060 message, again when deliver_drop_privilege is set or Exim is run as root.
3061 The bug described in (1) was not present in this case, but the tidying up
3062 of the other signals was missing. I have made the two cases consistent.
3063
3064 3. The ignore_target_hosts setting on a manualroute router was being ignored
3065 for hosts that were looked up using the /MX notation.
3066
3067 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3068 in domain lists.
3069
3070 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3071 operated on the sender address. After changing the $sender_address to <>
3072 for the sender address verify, Exim was re-instated it as the original
3073 (before rewriting) address, but remembering that it had rewritten it, so it
3074 wasn't rewriting it again. This bug also had the effect of breaking the
3075 sender address verification caching when the sender address was rewritten.
3076
3077 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3078 This has been changed so that if the ip literal address matches
3079 ignore_target_hosts, the router declines.
3080
3081 7. Added expansion conditions match_domain, match_address, and match_local_
3082 part (NOT match_host).
3083
3084 8. The placeholder for the Received: header didn't have a length field set.
3085
3086 9. Added code to Exim itself and to exim_lock to test for a specific race
3087 condition that could lead to file corruption when using MBX delivery. The
3088 issue is with the lockfile that is created in /tmp. If this file is removed
3089 after a process has opened it but before that process has acquired a lock,
3090 there is the potential for a second process to recreate the file and also
3091 acquire a lock. This could lead to two Exim processes writing to the file
3092 at the same time. The added code performs the same test as UW imapd; it
3093 checks after acquiring the lock that its file descriptor still refers to
3094 the same named file.
3095
309610. The buffer for building added header lines was of fixed size, 8192 bytes.
3097 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3098 when Exim is built.
3099
310011. Added the smtp_active_hostname option. If used, this will typically be made
3101 to depend on the incoming interface address. Because $interface_address is
3102 not set up until the daemon has forked a reception process, error responses
3103 that can happen earlier (such as "too many connections") no longer contain
3104 a host name.
3105
310612. If an expansion in a condition on a "warn" statement fails because a lookup
3107 defers, the "warn" statement is abandoned, and the next ACL statement is
3108 processed. Previously this caused the whole ACL to be aborted.
3109
311013. Added the iplsearch lookup type.
3111
311214. Added ident_timeout as a log selector.
3113
311415. Added tls_certificate_verified as a log selector.
3115
311616. Added a global option tls_require_ciphers (compare the smtp transport
3117 option of the same name). This controls incoming TLS connections.
3118
311917. I finally figured out how to make tls_require_ciphers do a similar thing
3120 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3121 before starting the TLS session.
3122
312318. Tabs are now shown as \t in -bP output.
3124
312519. If the log selector return_path_on_delivery was set, Exim crashed when
3126 bouncing a message because it had too many Received: header lines.
3127
312820. If two routers both had headers_remove settings, and the first one included
3129 a superfluous trailing colon, the final name in the first list and the
3130 first name in the second list were incorrectly joined into one item (with a
3131 colon in the middle).
3132
3133
3134Exim version 4.32
3135-----------------
3136
3137 1. Added -C and -D options to the exinext utility, mainly to make it easier
3138 to include in the automated testing, but these could be helpful when
3139 multiple configurations are in use.
3140
3141 2. The exinext utility was not formatting the output nicely when there was
3142 an alternate port involved in the retry record key, nor when there was a
3143 message id as well (for retries that were specific to a specific message
3144 and a specific host). It was also confused by IPv6 addresses, because of
3145 the additional colons they contain. I have fixed the IPv4 problem, and
3146 patched it up to do a reasonable job for IPv6.
3147
3148 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3149 delivery, the log line now contains "pipelined" if PIPELINING was used.
3150
3151 4. An SMTP transport process used to panic and die if the bind() call to set
3152 an explicit outgoing interface failed. This has been changed; it is now
3153 treated in the same way as a connect() failure.
3154
3155 5. A reference to $sender_host_name in the part of a conditional expansion
3156 that was being skipped was still causing a DNS lookup. This no longer
3157 occurs.
3158
3159 6. The def: expansion condition was not recognizing references to header lines
3160 that used bh_ and bheader_.
3161
3162 7. Added the _cache feature to named lists.
3163
3164 8. The code for checking quota_filecount in the appendfile transport was
3165 allowing one more file than it should have been.
3166
3167 9. For compatibility with Sendmail, the command line option
3168
3169 -prval:sval
3170
3171 is equivalent to
3172
3173 -oMr rval -oMs sval
3174
3175 and sets the incoming protocol and host name (for trusted callers). The
3176 host name and its colon can be omitted when only the protocol is to be set.
3177 Note the Exim already has two private options, -pd and -ps, that refer to
3178 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3179 "s", but I don't think that's a major issue.
3180
318110. A number of refactoring changes to the code, none of which should affect
3182 Exim's behaviour:
3183
3184 (a) The number of logging options was getting close to filling up the
3185 32-bit word that was used as a bit map. I have split them into two classes:
3186 those that are passed in the argument to log_write(), and those that are
3187 only ever tested independently outside of that function. These are now in
3188 separate 32-bit words, so there is plenty of room for expansion again.
3189 There is no change in the user interface or the logging behaviour.
3190
3191 (b) When building, for example, log lines, the code previously used a
3192 macro that called string_cat() twice, in order to add two strings. This is
3193 not really sufficiently general. Furthermore, there was one instance where
3194 it was actually wrong because one of the argument was used twice, and in
3195 one call a function was used. (As it happened, calling the function twice
3196 did not affect the overall behaviour.) The macro has been replaced by a
3197 function that can join an arbitrary number of extra strings onto a growing
3198 string.
3199
3200 (c) The code for expansion conditions now uses a table and a binary chop
3201 instead of a serial search (which was left over from when there were very
3202 few conditions). Also, it now recognizes conditions like "pam" even when
3203 the relevant support is not compiled in: a suitably worded error message is
3204 given if an attempt is made to use such a condition.
3205
320611. Added ${time_interval:xxxxx}.
3207
320812. A bug was causing one of the ddress fields not to be passed back correctly
3209 from remote delivery subprocesses. The field in question was not being
3210 subsequently used, so this caused to problems in practice.
3211
321213. Added new log selectors queue_time and deliver_time.
3213
321414. Might have fixed a bug in maildirsizefile handling that threw up
3215 "unexpected character" debug warnings, and recalculated the data
3216 unnecessarily. In any case, I expanded the warning message to give more
3217 information.
3218
321915. Added the message "Restricted characters in address" to the statements in
3220 the default ACL that block characters like @ and % in local parts.
3221
322216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3223 Three changes have been made:
3224
3225 (a) There was a serious bug; a negative response to MAIL caused the whole
3226 recipient domain to be cached as invalid, thereby blocking all messages
3227 to all local parts at the same domain, from all senders. This bug has
3228 been fixed. The domain is no longer cached after a negative response to
3229 MAIL if the sender used is not empty.
3230
3231 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3232 been restored.
3233
3234 (c) A new callout option, "use_sender" has been added for people who want
3235 the modified behaviour.
3236
3237
3238Exim version 4.31
3239-----------------
3240
3241 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3242 Larry Rosenman.
3243
3244 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3245 indeed breaks things for older releases.
3246
3247 3. Added additional logging to the case where there is a problem reading data
3248 from a filter that is running in a subprocess using a pipe, in order to
3249 try to track down a specific problem.
3250
3251 4. Testing facility fudge: when running in the test harness and attempting
3252 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3253 getting "No route to host". Convert this to a timeout.
3254
3255 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3256 warning.
3257
3258 6. Some OS don't have socklen_t but use size_t instead. This affects the
3259 fifth argument of getsockopt() amongst other things. This is now
3260 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3261 can be set for individual OS. I have set it for SunOS5, OSF1, and
3262 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3263 some earlier ones do not.
3264
3265 7. Change 4.30/15 was not doing the test caselessly.
3266
3267 8. The standard form for an IPv6 address literal was being rejected by address
3268 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3269 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3270 this, as well as the form without the "IPv6" on the front (but only when
3271 address literals are enabled, of course).
3272
3273 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3274
327510. Exim crashed if a message with an empty sender address specified by -f
3276 encountered a router with an errors_to setting. This could be provoked only
3277 by a command such as
3278
3279 exim -f "" ...
3280
3281 where an empty string was supplied; "<>" did not hit this bug.
3282
328311. Installed PCRE release 4.5.
3284
328512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3286 remained set. It is now erased.
3287
328813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3289 times from message ids (which are base 36 rather than the normal 62).
3290
329114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3292 were being counted as actual protocol errors, and logged if the log
3293 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3294 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3295 and DATA following a set of rejected RCPTs do not count as protocol errors.
3296 In other words, Exim assumes they were pipelined, though this may not
3297 actually be the case. Of course, in all cases the client gets an
3298 appropriate error code.
3299
330015. If a lookup fails in an ACL condition, a message about the failure may
3301 be available; it is used if testing the ACL cannot continue, because most
3302 such messages specify what the cause of the deferral is. However, some
3303 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3304 that caused an old message to be retained and used if a later statement
3305 caused a defer, replacing the real cause of the deferral.
3306
330716. If an IP address had so many PTR records that the DNS lookup buffer
3308 was not large enough to hold them, Exim could crash while trying to process
3309 the truncated data. It now detects and logs this case.
3310
331117. Further to 4.21/58, another change has been made: if (and only if) the
3312 first line of a message (the first header line) ends with CRLF, a bare LF
3313 in a subsequent header line has a space inserted after it, so as not to
3314 terminate the header.
3315
331618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3317 unnecessarily, used atoi() instead of strtol(), and didn't check the
3318 termination when getting file sizes from file names by regex.
3319
332019. Completely re-implemented the support for maildirsize files, in the light
3321 of a number of problems with the previous contributed implementation
3322 (4.30/29). In particular:
3323
3324 . If the quota is zero, the maildirsize file is maintained, but no quota is
3325 imposed.
3326
3327 . If the maildir directory does not exist, it is created before any attempt
3328 to write a maildirsize file.
3329
3330 . The quota value in the file is just a cache; if the quota is changed in
3331 the transport, the new value overrides.
3332
3333 . A regular expression is available for excluding directories from the
3334 count.
3335
333620. The autoreply transport checks the characters in options that define the
3337 message's headers; it allows continued headers, but it was checking with
3338 isspace() after an embedded newline instead of explicitly looking for a
3339 space or a tab.
3340
334121. If all the "regular" hosts to which an address was routed had passed their
3342 expiry times, and had not reached their retry times, the address was
3343 bounced, even if fallback hosts were defined. Now Exim should go on to try
3344 the fallback hosts.
3345
334622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3347 equivalent code in the SMTP transport. Some hosts send humungous responses
3348 to HELO/EHLO, more than 1024 it seems.
3349
335023. Refactoring: code in filter.c used (void *) for "any old type" but this
3351 gives compiler warnings in some environments. I've now done it "properly",
3352 using a union.
3353
335424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3355 (because of problems with the built-in one) was declared to return uschar *
3356 instead of char *, causing compiler failure.
3357
335825. Fixed a file descriptor leak when processing alias/forward files.
3359
336026. Fixed a minor format string issue in dbfn.c.
3361
336227. Typo in exim.c: ("dmbnz" for "dbmnz").
3363
336428. If a filter file refered to $h_xxx or $message_headers, and the headers
3365 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3366 become corrupted.
3367
336829. When a sender address is verified, it is cached, to save repeating the test
3369 when there is more than one recipient in a message. However, when the
3370 verification involves a callout, it is possible for different callout
3371 options to be set for different recipients. It is too complicated to keep
3372 track of this in the cache, so now Exim always runs a verification when a
3373 callout is required, relying on the callout cache for the optimization.
3374 The overhead is duplication of the address routing, but this should not be
3375 too great.
3376
337730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3378 to be verified with callout=postmaster, and the main callout worked but the
3379 postmaster check failed, the verification correctly failed. However, if a
3380 subsequent RCPT command asked for sender verification *without* the
3381 postmaster check, incorrect caching caused this verification also to fail,
3382 incorrectly.
3383
338431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3385 it was not caching the DNS options (qualify_single, search_parents) that
3386 were used when the lookup failed. A subsequent lookup with different
3387 options therefore always gave the same answer, though there were cases
3388 where it should not have. (Example: a "domains = !$mx_any" option on a
3389 dnslookup router: the "domains" option is always processed without any
3390 widening, but the router might have qualify_single set.) Now Exim uses the
3391 cached value only when the same options are set.
3392
339332. Added John Jetmore's "exipick" utility to the distribution.
3394
339533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3396 than a timeout (e.g. a certificate is required, and is not provided), an
3397 Exim server now closes the connection immediately. Previously it waited for
3398 the client to close - but if the client is SSL, it seems that they each
3399 wait for each other, leading to a delay before one of them times out.
3400
340134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3402 maintained 0.8.x compatibility because I don't think many are using it, and
3403 it is clearly obsolete.
3404
340535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3406 transport.
3407
340836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3409 client certificate was expired. A simple patch fixes this, though I don't
3410 understand the full logic of why the verify callback is called multiple
3411 times.
3412
341337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3414 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3415 which causes problems with some clients (such as the Certicom SSL Plus
3416 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3417 disables the coutermeasure allowing Eudora to connect."
3418
341938. Exim was not checking that a write() to a log file succeeded. This could
3420 lead to Bad Things if a log got too big, in particular if it hit a file
3421 size limit. Exim now panics and dies if it cannot write to a log file, just
3422 as it does if it cannot open a log file.
3423
342439. Modified OS/Makefile-Linux so that it now contains
3425
3426 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3427
3428 The two -D definitions ensure that Exim is compiled with large file
3429 support, which makes it possible to handle log files that are bigger than
3430 2^31.
3431
343240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3433 instance) a domain was checked against a named list that involved a lookup,
3434 causing $domain_data to be set, then another domain was checked against the
3435 same list, then the first domain was re-checked, the value of $domain_data
3436 after the final check could be wrong. In particular, if the second check
3437 failed, it could be set empty. This bug probably also applied to
3438 $localpart_data.
3439
344041. The strip_trailing_dot option was not being applied to the address given
3441 with the -f command-line option.
3442
344342. The code for reading a message's header from the spool was incrementing
3444 $received_count, but never initializing it. This meant that the value was
3445 incorrect (doubled) while delivering a message in the same process in which
3446 it was received. In the most common configuration of Exim, this never
3447 happens - a fresh exec is done - but it can happen when
3448 deliver_drop_privilege is set.
3449
345043. When Exim logs an SMTP synchronization error - client data sent too soon -
3451 it now includes up to 150 characters of the unexpected data in the log
3452 line.
3453
345444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3455 and building data strings. The size of both of these buffers was 10 000
3456 bytes - far larger than anybody would *ever* want, thought I. Needless to
3457 say, somebody hit the limit. I have increased the maximum line length to
3458 20 000 and the maximum data length of concatenated lines to 100 000. I have
3459 also fixed two bugs, because there was no checking on these buffers. Tsk,
3460 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3461 buffer is too small.
3462
346345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3464 lsearch lookups. Now it does.
3465
346646. When parsing a route_list item in a manualroute router, a fixed-length
3467 buffer was used for the list of hosts. I made this 1024 bytes long,
3468 thinking that nobody would ever have a list of hosts that long. Wrong.
3469 Somebody had a whole pile of complicated expansion conditions, and the
3470 string was silently truncated, leading to an expansion error. It turns out
3471 that it is easier to change to an unlimited length (owing to other changes
3472 that have happened since this code was originally written) than to build
3473 structure for giving a limitation error. The length of the item that
3474 expands into the list of hosts is now unlimited.
3475
347647. The lsearch lookup could not handle data where the length of text line was
3477 more than 4095 characters. Such lines were truncated, leading to shortened
3478 data being returned. It should now handle lines of any length.
3479
348048. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3481 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3482 ACL").
3483
348449. Cosmetic tidy to scripts like exicyclog that are generated by globally
3485 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3486 no longer happens in comment lines. A list of replacements is now placed
3487 at the head of all of the source files, except those whose only change is
3488 to replace PERL_COMMAND in the very first #! line.
3489
349050. Replaced the slow insertion sort in queue.c, for sorting the list of
3491 messages on the queue, with a bottom-up merge sort, using code contributed
3492 by Michael Haardt. This should make operations like -bp somewhat faster on
3493 large queues. It won't affect queue runners, except when queue_run_in_order
3494 is set.
3495
349651. Installed eximstats 1.31 in the distribution.
3497
349852. Added support for SRV lookups to the dnslookup router.
3499
350053. If an ACL referred to $message_body or $message_body_end, the value was not
3501 reset for any messages that followed in the same SMTP session.
3502
350354. The store-handling optimization for building very long strings was not
3504 differentiating between the different store pools. I don't think this
3505 actually made any difference in practice, but I've tidied it.
3506
350755. While running the routers to verify a sender address, $sender_address
3508 was still set to the sender address. This is wrong, because when routing to
3509 send a bounce to the sender, it would be empty. Therefore, I have changed
3510 it so that, while verifying a sender address, $sender_address is set to <>.
3511 (There is no change to what happens when verifying a recipient address.)
3512
351356. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3514 target A or AAAA records (if not already returned) without resetting the
3515 qualify_single or search_parents options of the DNS resolver. These are
3516 inappropriate in this case because the targets of MX and SRV records must
3517 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3518 target that, when qualified, matched something in the local domain. These
3519 two options are now turned off when doing these lookups.
3520
352157. It seems that at least some releases of Reiserfs (which does not have the
3522 concept of a fixed number of inodes) returns zero and not -1 for the
3523 number of available inodes. This interacted badly with check_spool_inodes,
3524 which assumed that -1 was the "no such thing" setting. What I have done is
3525 to check that the total number of inodes is greater than zero before doing
3526 the test of how many are available.
3527
352858. When a "warn" ACL statement has a log_message modifier, the message is
3529 remembered, and not repeated. This is to avoid a lot of repetition when a
3530 message has many recipients that cause the same warning to be written.
3531 Howewer, Exim was preserving the list of already written lines for an
3532 entire SMTP session, which doesn't seem right. The memory is now reset if a
3533 new message is started.
3534
353559. The "rewrite" debugging flag was not showing the result of rewriting in the
3536 debugging output unless log_rewrite was also set.
3537
353860. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3539 of (int)(handle) when we know that handle contains (void *)(-1).
3540
354161. The Exim daemon panic-logs an error return when it closes the incoming
3542 connection. However "connection reset by peer" seems to be common, and
3543 isn't really an error worthy of noting specially, so that particular error
3544 is no long logged.
3545
354662. When Exim is trying to find all the local interfaces, it used to panic and
3547 die if the ioctl to get the interface flags failed. However, it seems that
3548 on at least one OS (Solaris 9) it is possible to have an interface that is
3549 included in the list of interfaces, but for which you get a failure error
3550 for this call. This happens when the interface is not "plumbed" into a
3551 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3552 failure of the "get flags" call assumes that the interface is down.
3553
355463. Added a ${eval10: operator, which assumes all numbers are decimal. This
3555 makes life easier for people who are doing arithmetic on fields extracted
3556 from dates, where you often get leading zeros that should not be
3557 interpreted as octal.
3558
355964. Added qualify_domain to the redirect router, to override the global
3560 setting.
3561
356265. If a pathologically long header line contained very many addresses (the
3563 report of this problem mentioned 10 000) and each of them was rewritten,
3564 Exim could use up a very large amount of memory. (It kept on making new
3565 copies of the header line as it rewrote, and never released the old ones.)
3566 At the expense of a bit more processing, the header rewriting function has
3567 been changed so that it no longer eats memory in this way.
3568
356966. The generation of the Received: header has been moved from the time that a
3570 message starts to be received, to the time that it finishes. The timestamp
3571 in the Received: header should now be very close to that of the <= log
3572 line. There are two side-effects of this change:
3573
3574 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3575 logged header lines no longer include the local Received: line, because
3576 it has not yet been created. The same applies to a copy of the message
3577 that is returned to a non-SMTP sender when a message is rejected.
3578
3579 (b) When a filter file is tested using -bf, no additional Received: header
3580 is added to the test message. After some thought, I decided that this
3581 is a bug fix.
3582
3583 This change does not affect the value of $received_for. It is still set
3584 after address rewriting, but before local_scan() is called.
3585
358667. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3587
358868. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3589 gave an unhelpful panic error message, and a defer error. I have managed to
3590 change this behaviour so that it now rejects any supplied certificate,
3591 which seems right, as the list of acceptable certificates is empty.
3592
3593