Add some tolerance for QT= value in tests.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
b01dd148 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.461 2007/01/23 14:34:02 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
b4ed4da0 55
5dd1517f
PH
56Exim version 4.66
57-----------------
58
59PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
60 fixed by 4.65/MH/01 (is this a record?) are fixed:
61
62 (i) An empty string was always treated as zero by the numeric comparison
63 operators. This behaviour has been restored.
64
65 (ii) It is documented that the numeric comparison operators always treat
66 their arguments as decimal numbers. This was broken in that numbers
67 starting with 0 were being interpreted as octal.
68
69 While fixing these problems I realized that there was another issue that
70 hadn't been noticed. Values of message_size_limit (both the global option
71 and the transport option) were treated as octal if they started with 0.
72 The documentation was vague. These values are now always treated as
73 decimal, and I will make that clear in the documentation.
74
75
93cfa765
TK
76Exim version 4.65
77-----------------
78
79TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
80 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
81 versions. (#438)
82
d6066548
MH
83MH/01 Don't check that the operands of numeric comparison operators are
84 integers when their expansion is in "skipping" mode (fixes bug
85 introduced by 4.64-PH/07).
86
4362ff0d
PH
87PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
88 child addresses, Exim now panics and dies. Previously, because the count
89 is held in a short int, deliveries were likely to be lost. As such a
90 large number of recipients for a single message is ridiculous
91 (performance will be very, very poor), I have chosen to impose a limit
92 rather than extend the field.
93
93cfa765 94
944e9e9c
TF
95Exim version 4.64
96-----------------
aa41d2de 97
21d74bd9
TK
98TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
99 leftover -K file (the existence of which was triggered by #402).
100 While we were at it, introduced process PID as part of the -K
101 filename. This should rule out race conditions when creating
102 these files.
103
104TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
105 processing considerably. Previous code took too long for large mails,
106 triggering a timeout which in turn triggers #401.
107
108TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
109 in the DK code in transports.c. sendfile() is not really portable,
110 hence the _LINUX specificness.
944e9e9c
TF
111
112TF/01 In the add_headers option to the mail command in an Exim filter,
113 there was a bug that Exim would claim a syntax error in any
114 header after the first one which had an odd number of characters
115 in the field name.
116
2b1c6e3a
PH
117PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
118 callout verification, Exim cached a "reject" for the entire domain. This
119 is correct for most verifications, but it is not correct for a recipient
120 verification with use_sender or use_postmaster set, because in that case
121 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
122 case of MAIL FROM:<> rejection from other early rejections (e.g.
123 rejection of HELO). When verifying a recipient using a non-null MAIL
124 address, the cache is ignored if it shows MAIL FROM:<> rejection.
125 Whatever the result of the callout, the value of the domain cache is
126 left unchanged (for any other kind of callout, getting as far as trying
127 RCPT means that the domain itself is ok).
128
1f872c80
PH
129PH/02 Tidied a number of unused variable and signed/unsigned warnings that
130 gcc 4.1.1 threw up.
131
132PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
133 manifest itself as EPIPE rather than ECONNECT. When tidying away a
134 session, the daemon ignores ECONNECT errors and logs others; it now
135 ignores EPIPE as well.
136
d203e649
PH
137PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
138 (quoted-printable decoding).
139
cc2ed8f7 140PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 141 later the small subsequent patch to fix an introduced bug.
f951fd57 142
ddfcd446
PH
143PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
144
d45b1de8
PH
145PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
146
147PH/08 An error is now given if message_size_limit is specified negative.
148
38a0a95f 149PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 150 to be given (somewhat) arbitrary names.
38a0a95f 151
a2405d83
JJ
152JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
153 in 4.64-PH/09.
154
155JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
156 miscellaneous code fixes
157
6ea85e9a
PH
158PH/10 Added the log_reject_target ACL modifier to specify where to log
159 rejections.
160
26da7e20
PH
161PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
162 hostname. This is wrong, because it relates to the incoming message (and
163 probably the interface on which it is arriving) and not to the outgoing
164 callout (which could be using a different interface). This has been
165 changed to use the value of the helo_data option from the smtp transport
166 instead - this is what is used when a message is actually being sent. If
167 there is no remote transport (possible with a router that sets up host
168 addresses), $smtp_active_hostname is used.
6ea85e9a 169
14aa5a05 170PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 171 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
172 (a) The code assumed that strncpy() returns a negative number on buffer
173 overflow, which isn't the case. Replaced with Exim's string_format()
174 function.
175 (b) There were several signed/unsigned issues. I just did the minimum
176 hacking in of casts. There is scope for a larger refactoring.
177 (c) The code used strcasecmp() which is not a standard C function.
178 Replaced with Exim's strcmpic() function.
179 (d) The code set only $1; it now sets $auth1 as well.
180 (e) A simple test gave the error "authentication client didn't specify
181 service in request". It would seem that Dovecot has changed its
182 interface. Fortunately there's a specification; I followed it and
183 changed what the client sends and it appears to be working now.
184
ff75a1f7
PH
185PH/13 Added $message_headers_raw to provide the headers without RFC 2047
186 decoding.
187
e6f6568e
PH
188PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
189 address A is aliased to B and C, where B exists and C does not. Without
190 -v the output is "A verified" because verification stops after a
191 successful redirection if more than one address is generated. However,
192 with -v the child addresses are also verified. Exim was outputting "A
193 failed to verify" and then showing the successful verification for C,
194 with its parentage. It now outputs "B failed to verify", showing B's
195 parentage before showing the successful verification of C.
196
d6f6e0dc
PH
197PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
198 look up a TXT record in a specific list after matching in a combined
199 list.
200
322050c2
PH
201PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
202 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
203 they consult the DNS. I had assumed they would set it the way they
204 wanted; and indeed my experiments on Linux seem to show that in some
205 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
206 To be on the safe side, however, I have now made the interface to
207 host_find_byname() similar to host_find_bydns(), with an argument
208 containing the DNS resolver options. The host_find_byname() function now
209 sets these options at its start, just as host_find_bydns() does. The smtp
210 transport options dns_qualify_single and dns_search_parents are passed to
211 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
212 of host_find_byname() use the default settings of RES_DEFNAMES
213 (qualify_single) but not RES_DNSRCH (search_parents).
214
08955dd3
PH
215PH/17 Applied (a modified version of) Nico Erfurth's patch to make
216 spool_read_header() do less string testing, by means of a preliminary
217 switch on the second character of optional "-foo" lines. (This is
218 overdue, caused by the large number of possibilities that now exist.
219 Originally there were few.) While I was there, I also converted the
220 str(n)cmp tests so they don't re-test the leading "-" and the first
221 character, in the hope this might squeeze out yet more improvement.
222
1eccaa59
PH
223PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
224 flag allowing group syntax was set by the header_syntax check but not
225 turned off, possible causing trouble later; (2) The flag was not being
226 set at all for the header_verify test, causing "group"-style headers to
227 be rejected. I have now set it in this case, and also caused header_
228 verify to ignore an empty address taken from a group. While doing this, I
229 came across some other cases where the code for allowing group syntax
230 while scanning a header line wasn't quite right (mostly, not resetting
231 the flag correctly in the right place). These bugs could have caused
232 trouble for malformed header lines. I hope it is now all correct.
233
602e59e5
PH
234PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
235 with the "reply" argument non-NULL. The code, however (which originally
236 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
237 but it didn't always do it. This confused somebody who was copying the
238 code for some other use. I have removed all the tests.
239
411ef850
PH
240PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
241 feature that was used to support insecure browsers during the U.S. crypto
242 embargo. It requires special client support, and Exim is probably the
243 only MTA that supported it -- and would never use it because real RSA is
244 always available. This code has been removed, because it had the bad
245 effect of slowing Exim down by computing (never used) parameters for the
246 RSA_EXPORT functionality.
247
7befa435
PH
248PH/21 On the advice of Timo Sirainen, added a check to the dovecot
249 authenticator to fail if there's a tab character in the incoming data
250 (there should never be unless someone is messing about, as it's supposed
251 to be base64-encoded). Also added, on Timo's advice, the "secured" option
252 if the connection is using TLS or if the remote IP is the same as the
253 local IP, and the "valid-client-cert option" if a client certificate has
254 been verified.
255
48da4259 256PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
257 authenticators. This can be used for authorization after authentication
258 succeeds. (In the case of plaintext, it servers for both authentication
259 and authorization.)
260
48da4259
PH
261PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
262 if any retry times were supplied.
263
d1d5595c
PH
264PH/24 Exim crashed if verify=helo was activated during an incoming -bs
265 connection, where there is no client IP address to check. In this
266 situation, the verify now always succeeds.
267
0ef732d9
PH
268PH/25 Applied John Jetmore's -Mset patch.
269
328895cc
PH
270PH/26 Added -bem to be like -Mset, but loading a message from a file.
271
fd700877
PH
272PH/27 In a string expansion for a processed (not raw) header when multiple
273 headers of the same name were present, leading whitespace was being
274 removed from all of them, but trailing whitespace was being removed only
275 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
276 before concatenation. Completely empty headers in a concatenation (as
277 before) are ignored.
fd700877 278
8dce1a6f
PH
279PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
280 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
281
17af4a17
PH
282PH/29 [Removed. This was a change that I later backed out, and forgot to
283 correct the ChangeLog entry (that I had efficiently created) before
284 committing the later change.]
f6c332bd
PH
285
286PH/30 Exim was sometimes attempting to deliver messages that had suffered
287 address errors (4xx response to RCPT) over the same connection as other
288 messages routed to the same hosts. Such deliveries are always "forced",
289 so retry times are not inspected. This resulted in far too many retries
290 for the affected addresses. The effect occurred only when there were more
291 hosts than the hosts_max_try setting in the smtp transport when it had
292 the 4xx errors. Those hosts that it had tried were not added to the list
293 of hosts for which the message was waiting, so if all were tried, there
294 was no problem. Two fixes have been applied:
295
296 (i) If there are any address or message errors in an SMTP delivery, none
297 of the hosts (tried or untried) are now added to the list of hosts
298 for which the message is waiting, so the message should not be a
299 candidate for sending over the same connection that was used for a
300 successful delivery of some other message. This seems entirely
301 reasonable: after all the message is NOT "waiting for some host".
302 This is so "obvious" that I'm not sure why it wasn't done
303 previously. Hope I haven't missed anything, but it can't do any
304 harm, as the worst effect is to miss an optimization.
305
306 (ii) If, despite (i), such a delivery is accidentally attempted, the
307 routing retry time is respected, so at least it doesn't keep
308 hammering the server.
309
c1114884
PH
310PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
311 in ${readsocket because some servers need this prod.
312
7a0743eb
PH
313PH/32 Added some extra debug output when updating a wait-xxx database.
314
0d85fa3f
PH
315PH/33 The hint "could be header name not terminated by colon", which has been
316 given for certain expansion errors for a long time, was not being given
317 for the ${if def:h_colon_omitted{... case.
318
1bf43b78
PH
319PH/34 The spec says: "With one important exception, whenever a domain list is
320 being scanned, $domain contains the subject domain." There was at least
321 one case where this was not true.
322
520de300
PH
323PH/35 The error "getsockname() failed: connection reset by peer" was being
324 written to the panic log as well as the main log, but it isn't really
325 panic-worthy as it just means the connection died rather early on. I have
326 removed the panic log writing for the ECONNRESET error when getsockname()
327 fails.
328
48c7f9e2
PH
329PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
330 runs only) independently of the message's sender address. This meant
331 that, if the 4xx error was in fact related to the sender, a different
332 message to the same recipient with a different sender could confuse
333 things. In particualar, this can happen when sending to a greylisting
334 server, but other circumstances could also provoke similar problems.
335 I have changed the default so that the retry time for these errors is now
336 based a combination of the sender and recipient addresses. This change
337 can be overridden by setting address_retry_include_sender=false in the
338 smtp transport.
339
99ea1c86
PH
340PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
341 remote server are returned as part of bounce messages. This was not
342 happening for LMTP over a pipe (the lmtp transport), but now it is the
343 same for both kinds of LMTP.
344
a2042e78
PH
345PH/38 Despite being documented as not happening, Exim was rewriting addresses
346 in header lines that were in fact CNAMEs. This is no longer the case.
347
4fbcfc2e
PH
348PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
349 and queue runs started by the daemon processed all messages. This has
350 been fixed so that -R and -S can now usefully be given with -q<time>.
351
aa41d2de
PH
352PH/40 Import PCRE release 6.7 (fixes some bugs).
353
af561417
PH
354PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
355
3cc66b45
PH
356PH/42 Give an error if -q is specified more than once.
357
194cc0e4
PH
358PH/43 Renamed the variables $interface_address and $interface_port as
359 $received_ip_address and $received_port, to make it clear that these
360 values apply to message reception, and not to the outgoing interface when
361 a message is delivered. (The old names remain recognized, of course.)
362
a401ddaa
PH
363PH/44 There was no timeout on the connect() call when using a Unix domain
364 socket in the ${readsocket expansion. There now is.
365
4e88a19f
PH
366PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
367 be meaningful with "accept".
368
d7d7b289
SC
369SC/01 Eximstats V1.43
370 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
371
372SC/02 Eximstats V1.44
373 Use a glob alias rather than an array ref in the generated
374 parser. This improves both readability and performance.
375
376SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
377 Collect SpamAssassin and rejection statistics.
378 Don't display local sender or destination tables unless
379 there is data to show.
380 Added average volumes into the top table text output.
381
382SC/04 Eximstats V1.46
383 Collect data on the number of addresses (recipients)
384 as well as the number of messages.
385
386SC/05 Eximstats V1.47
387 Added 'Message too big' to the list of mail rejection
388 reasons (thanks to Marco Gaiarin).
389
390SC/06 Eximstats V1.48
391 Mainlog lines which have GMT offsets and are too short to
392 have a flag are now skipped.
393
394SC/07 Eximstats V1.49 (Alain Williams)
395 Added the -emptyok flag.
396
397SC/08 Eximstats V1.50
398 Fixes for obtaining the IP address from reject messages.
399
0ea2a468
JJ
400JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
401 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
402 whitesspace changes from 4.64-PH/27
403
404JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
405 match 4.64-PH/13
406
407JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
408 are found, allow negative numbers in numeric criteria)
409
410JJ/06 exipick.20061117.2, added new $message_body_missing variable
411
412JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
413 to match changes made in 4.64-PH/43
414
8a10f5a4
PH
415PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
416
30e18802
PH
417PH/47 Put in an explicit test for a DNS lookup of an address record where the
418 "domain" is actually an IP address, and force a failure. This locks out
419 those revolvers/nameservers that support "A-for-A" lookups, in
420 contravention of the specifications.
421
55728a4f
PH
422PH/48 When a host name was looked up from an IP address, and the subsequent
423 forward lookup of the name timed out, the host name was left in
424 $sender_host_name, contrary to the specification.
d7d7b289 425
d7837193
PH
426PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
427 restricted to single-key lookups, Exim was not diagnosing an error if
428 * or *@ was used with a query-style lookup.
429
87054a31
PH
430PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
431
ea2c01d2
MH
432MH/01 local_scan ABI version incremented to 1.1. It should have been updated
433 long ago, but noone interested enough thought of it. Let's just say that
434 the "1.1" means that there are some new functions that weren't there at
435 some point in the past.
436
e4fa6968
PH
437PH/51 Error processing for expansion failure of helo_data from an smtp
438 transport during callout processing was broken.
439
56f5d9bd
PH
440PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
441 tested/used via the -bh/-bhc/-bs options.
442
922e1c28
PH
443PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
444 bug, fixed in subsequent PCRE releases).
445
21eb6e72
PH
446PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
447 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
448
a0540757
PH
449PH/55 Check for a ridiculously long file name in exim_dbmbuild.
450
944e9e9c 451
478be7b0
SC
452Exim version 4.63
453-----------------
454
455SC/01 Use a glob alias rather than an array ref in eximstats generated
456 parser. This improves both readability and performance.
457
458SC/02 Collect SpamAssassin and rejection statistics in eximstats.
459 Don't display local sender or destination tables in eximstats unless
460 there is data to show.
461 Added average volumes into the eximstats top table text output.
462
463SC/03 Collect data on the number of addresses (recipients) as well
464 as the number of messages in eximstats.
465
2b965a65
TF
466TF/01 Correct an error in the documentation for the redirect router. Exim
467 does (usually) call initgroups() when daemonizing.
478be7b0 468
45b91596
PH
469TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
470 with consistent privilege compared to when running as a daemon.
478be7b0 471
c59f5781
TF
472TF/03 Note in the spec that $authenticated_id is not set for local
473 submissions from trusted users.
474
90fc3069
TF
475TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
476 Thanks to Dean Brooks <dean@iglou.com> for the patch.
477
6083aca0
TF
478TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
479 by adding some example configuration directives to the default
480 configuration file. A little bit of work is required to uncomment the
481 directives and define how usernames and passwords are checked, but
482 there is now a framework to start from.
483
765b530f
PH
484PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
485 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
486 without this. I don't know how relevant this is to other LDAP libraries.
487
4e167a8c
PH
488PH/02 Add the verb name to the "unknown ACL verb" error.
489
4608d683
PH
490PH/03 Magnus Holmgren's patch for filter_prepend_home.
491
b8dc3e4a
PH
492PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
493
5418e93b
PH
494PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
495 directory not expanded when it should be if an expanded home directory
496 was set for the address (which is overridden by the transport).
497
b4a9bda2
PH
498PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
499 libradius.
500
45b91596
PH
501PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
502 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
503 because it is too late at that time, and has no effect.
504
5547e2c5
PH
505PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
506 security issue with \' (bugzilla #107). I could not use the
507 PQescapeStringConn() function, because it needs a PGconn value as one of
508 its arguments.
509
dbcef0ea
PH
510PH/08 When testing addresses using -bt, indicate those final addresses that
511 are duplicates that would not cause an additional delivery. At least one
512 person was confused, thinking that -bt output corresponded to deliveries.
513 (Suppressing duplicates isn't a good idea as you lose the information
514 about possibly different redirections that led to the duplicates.)
515
25257489
PH
516PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
517 systems where poll() doesn't work, in particular OS X.
518
c816d124
PH
519PH/10 Added more information to debugging output for retry time not reached.
520
a9ccd69a
PH
521PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
522 operations in malware.c.
523
75fa1910
PH
524PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
525 signatures.
526
a7d7aa58
PH
527PH/13 If write_rejectlog was set false when logging was sent to syslog with
528 syslog_duplication set false, log lines that would normally be written
529 both the the main log and to the reject log were not written to syslog at
530 all.
531
42119b09
PH
532PH/14 In the default configuration, change the use of "message" in ACL warn
533 statements to "add_header".
534
41609df5
PH
535PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
536 not followed by a command (e.g. "seen endif").
537
a5bd321b
PH
538PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
539 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
540 latter.
541
e85a7ad5 542PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
543 so that it is now:
544
e85a7ad5
PH
545 ${if or { \
546 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
547 { match{$h_precedence:}{(?i)bulk|list|junk} } \
548 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
549 }{no}{yes}}
550
e85a7ad5
PH
551 The Auto-Submitted: and various List- headers are standardised, whereas I
552 don't think Precedence: ever was.
5dff5817 553
d8fe1c03
PH
554PH/18 Refactored debugging code in route_finduser() to show more information,
555 in particular, the error code if getpwnam() issues one.
556
16282d2b
PH
557PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
558 This is apparently needed in addition to the PH/07 change above to avoid
559 any possible encoding problems.
560
35d40a98
PH
561PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
562 but not after initializing Perl.
563
034d99ab
PH
564PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
565 output them only if debugging. By default they are written stderr,
566 apparently, which is not desirable.
567
6ec97b1b
PH
568PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
569 queries.
570
e22ca4ac
JJ
571JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
572 --not options
573
574JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
575
33d73e3b
PH
576PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
577 authenticated or an ident call has been made. Suppress the default
578 values for $authenticated_id and $authenticated_sender (but permit -oMai
579 and -oMas) when testing with -bh.
580
9ecb03f3
PH
581PH/24 Re-jigged the order of the tests in the default configuration so that the
582 tests for valid domains and recipients precede the DNS black list and CSA
583 tests, on the grounds that those ones are more expensive.
584
084efe8d
PH
585PH/25 Exim was not testing for a space following SMTP commands such as EHLO
586 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
587 This bug exists in every version of Exim that I still have, right back to
588 0.12.
589
366fc9f0
PH
590PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
591 However, an attempt to turn on case-sensitivity in a regex key by
592 including (?-i) didn't work because the subject string was already
593 lowercased, and the effects were non-intuitive. It turns out that a
594 one-line patch can be used to allow (?-i) to work as expected.
595
c59f5781 596
c887c79e
TF
597Exim version 4.62
598-----------------
599
600TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
601 other effects) broke the use of negated acl sub-conditions.
602
1cce3af8
PH
603PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
604 patch).
605
afb3eaaf
PH
606PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
607 "Deny" causes Exim to reject the incoming connection with a 554 error.
608 Unfortunately, if there is a major crisis, such as a disk failure,
609 tcp-wrappers gives "deny", whereas what one would like would be some
610 kind of temporary error. A kludge has been added to help with this.
611 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
612 554 error is used if errno is still zero or contains ENOENT (which occurs
613 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
614 451 error is used.
615
e173618b
PH
616PH/03 Add -lutil to the default FreeBSD LIBS setting.
617
dd16e114
PH
618PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
619 errors. Otherwise a message that provokes a temporary error (when other
620 messages do not) can cause a whole host to time out.
621
f7fd3850
PH
622PH/05 Batch deliveries by appendfile and pipe transports did not work when the
623 addresses were routed directly to files or pipes from a redirect router.
624 File deliveries just didn't batch; pipe deliveries might have suffered
625 odd errors.
626
d87df92c
PH
627PH/06 A failure to get a lock for a hints database would erroneously always say
628 "Failed to get write lock", even when it was really a read lock.
629
7e9f683d
PH
630PH/07 The appendfile transport was creating MBX lock files with a fixed mode
631 of 0600. This has been changed to use the value of the lockfile_mode
632 option (which defaults to 0600).
633
bfad5236
PH
634PH/08 Applied small patch from the Sieve maintainer.
635
01c490df
PH
636PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
637 folder from quota calculations, a direct delivery into this folder messed
638 up the contents of the maildirsize file. This was because the regex was
639 used only to exclude .Trash (or whatever) when the size of the mailbox
640 was calculated. There was no check that a delivery was happening into an
641 excluded directory. This bug has been fixed by ignoring all quota
642 processing for deliveries into excluded directories.
643
d6629cdc
PH
644PH/10 Added the maildirfolder_create_regex option to appendfile.
645
1cce3af8 646
214e2000
PH
647Exim version 4.61
648-----------------
649
650PH/01 The code for finding all the local interface addresses on a FreeBSD
651 system running IPv6 was broken. This may well have applied to all BSD
652 systems, as well as to others that have similar system calls. The broken
653 code found IPv4 interfaces correctly, but gave incorrect values for the
654 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
655 that it would not match correctly against @[] and not recognize the IPv6
656 addresses as local.
657
f9daeae0
PH
658PH/02 The ipliteral router was not recognizing addresses of the form user@
659 [ipv6:....] because it didn't know about the "ipv6:" prefix.
660
7e66e54d
PH
661PH/03 Added disable_ipv6.
662
c8ea1597
PH
663PH/04 Changed $reply_address to use the raw form of the headers instead of the
664 decoded form, because it is most often used to construct To: headers
665 lines in autoreplies, and the decoded form may well be syntactically
666 invalid. However, $reply_address has leading white space removed, and all
667 newlines turned into spaces so that the autoreply transport does not
668 grumble.
669
911f6fde
PH
670PH/05 If group was specified without a user on a router, and no group or user
671 was specified on a transport, the group from the router was ignored.
672
47ca6d6c
PH
673PH/06 Increased the number of ACL variables to 20 of each type, and arranged
674 for visible compile-time settings that can be used to change these
675 numbers, for those that want even more. Backwards compatibility with old
676 spool files has been maintained. However, going back to a previous Exim
677 release will lost any variables that are in spool files.
678
ed0e9820
PH
679PH/07 Two small changes when running in the test harness: increase delay when
680 passing a TCP/IP connection to a new process, in case the original
681 process has to generate a bounce, and remove special handling of
682 127.0.0.2 (sic), which is no longer necessary.
683
eff37e47
PH
684PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
685 be the same on different OS.
686
1921d2ea
PH
687PH/09 Moved a debug statement in filter processing to avoid a race problem when
688 testing.
689
b3f69ca8
JJ
690JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
691 whether --show-vars was specified or not
692
693JJ/02 exipick: Added support for new ACL variable spool format introduced
694 in 4.61-PH/06
695
424a1c63
PH
696PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
697 syntactically invalid From: or Reply-to: line, and a filter used this to
698 generate an autoreply, and therefore failed to obtain an address for the
699 autoreply, Exim could try to deliver to a non-existent relative file
700 name, causing unrelated and misleading errors. What now happens is that
701 it logs this as a hard delivery error, but does not attempt to create a
702 bounce message.
703
7a100415
PH
704PH/11 The exinext utility has a -C option for testing purposes, but although
705 the given file was scanned by exinext itself; it wasn't being passed on
706 when Exim was called.
707
19b9dc85
PH
708PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
709 an end-of-file indication when reading a command response.
710
309bd837
PH
711PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
712 compiled. In many other places in Exim, IPv6 addresses are always
713 recognized, so I have changed this. It also means that IPv4 domain
714 literals of the form [IPV4:n.n.n.n] are now always recognized.
715
59e82a2a
PH
716PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
717 used if the router is not running as root, for example, when verifying at
718 ACL time, or when using -bh. The debugging output from this situation was
719 non-existent - all you got was a failure to exec. I have made two
720 changes:
721
722 (a) Failures to set uid/gid, the current directory, or a process leader
723 in a subprocess such as that created by queryprogram now generate
724 suitable debugging ouput when -d is set.
725
726 (b) The queryprogram router detects when it is not running as root,
727 outputs suitable debugging information if -d is set, and then runs
728 the subprocess without attempting to change uid/gid.
729
9edc04ce
PH
730PH/15 Minor change to Makefile for building test_host (undocumented testing
731 feature).
732
1349e1e5
PH
733PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
734 additional section of a DNS packet that returns MX or SRV records.
735 Instead, it always explicitly searches for A/AAAA records. This avoids
736 major problems that occur when a DNS server includes only records of one
737 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
738 fixed another bug: if SRV records were looked up and the corresponding
739 address records were *not* found in the additional section, the port
740 values from the SRV records were lost.
741
ea49d0e1
PH
742PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
743 using the correct key (the original address) when searching the retry
744 rules in order to find which one to use for generating the retry hint.
745
064a94c9
PH
746PH/18 If quota_warn_message contains a From: header, Exim now refrains from
747 adding the default one. Similarly, if it contains a Reply-To: header, the
748 errors_reply_to option, if set, is not used.
749
727071f8
PH
750PH/19 When calculating a retry time, Exim used to measure the "time since
751 failure" by looking at the "first failed" field in the retry record. Now
752 it does not use this if it is later than than the arrival time of the
753 message. Instead it uses the arrival time. This makes for better
754 behaviour in cases where some deliveries succeed, thus re-setting the
755 "first failed" field. An example is a quota failure for a huge message
756 when small messages continue to be delivered. Without this change, the
757 "time since failure" will always be short, possible causing more frequent
758 delivery attempts for the huge message than are intended.
dd16e114 759 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 760
f78eb7c6
PH
761PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
762 $1, $2, $3) because the numerical variables can be reset during some
763 expansion items (e.g. "match"), thereby losing the authentication data.
764
21c28500
PH
765PH/21 Make -bV show the size of off_t variables so that the test suite can
766 decide whether to run tests for quotas > 2G.
767
768PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
769 mailbox_size, and mailbox_filecount in the appendfile transport. If a
770 filecount value is greater than 2G or if a quota value is greater than 2G
771 on a system where the size of off_t is not greater than 4, a panic error
772 is given.
773
1688f43b
PH
774PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
775 never match. The debug and -bh output now contains an explicit error
776 message indicating a malformed IPv4 address or mask.
777
778PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
779 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
780 PH/23 above applies.
781
9675b384
PH
782PH/25 Do not write to syslog when running in the test harness. The only
783 occasion when this arises is a failure to open the main or panic logs
784 (for which there is an explicit test).
785
6a3f1455
PH
786PH/26 Added the /no_tell option to "control=freeze".
787
dac79d3e
PH
788PH/27 If a host name lookup failed very early in a connection, for example, if
789 the IP address matched host_lookup and the reverse lookup yielded a name
790 that did not have a forward lookup, an error message of the form "no IP
791 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
792 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 793
5977a0b3
PH
794PH/28 An enabling patch from MH: add new function child_open_exim2() which
795 allows the sender and the authenticated sender to be set when
796 submitting a message from within Exim. Since child_open_exim() is
797 documented for local_scan(), the new function should be too.
798
c91535f3
PH
799PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
800 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
801 results in an empty string is now treated as unset.
802
0d46a8c8
PH
803PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
804
278c6e6c
PH
805PH/31 Added sender_verify_fail logging option.
806
2cbb4081
PH
807PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
808 needed by RFC 822 but not by RFC 2822 was commented out. I have now
809 tidied the source and removed it altogether.
810
3eef829e
PH
811PH/33 When a queue run was abandoned because the load average was too high, a
812 log line was always written; now it is written only if the queue_run log
813 selector is set. In addition, the log line for abandonment now contains
814 information about the queue run such as the pid. This is always present
815 in "start" and "stop" lines but was omitted from the "abandon" line.
816
1ab95fa6
PH
817PH/34 Omit spaces between a header name and the colon in the error message that
818 is given when verify = headers_syntax fails (if there are lots of them,
819 the message gets confusing).
820
230205fc
PH
821PH/35 Change the default for dns_check_names_pattern to allow slashes within
822 names, as there are now some PTR records that contain slashes. This check
823 is only to protect against broken name servers that fall over on strange
824 characters, so the fact that it applies to all lookups doesn't matter.
825
75e0e026
PH
826PH/36 Now that the new test suite is complete, we can remove some of the
827 special code in Exim that was needed for the old test suite. For example,
828 sorting DNS records because real resolvers return them in an arbitrary
829 order. The new test suite's fake resolver always returns records in the
830 same order.
831
832PH/37 When running in the test harness, use -odi for submitted messages (e.g.
833 bounces) except when queue_only is set, to avoid logging races between
834 the different processes.
835
145396a6
PH
836PH/38 Panic-die if .include specifies a non-absolute path.
837
3cd34f13
PH
838PH/39 A tweak to the "H" retry rule from its user.
839
11121d3d
JJ
840JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
841 a label. They prevented compilation on older perls.
842
843JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
844 a warning to be raised on newish perls.
845
846JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
847 on queue. Changes to match documented behaviour of showing count of
848 messages matching specified criteria.
849
8def5aaf
PH
850PH/40 Changed the default ident timeout from 30s to 5s.
851
929ba01c
PH
852PH/41 Added support for the use of login_cap features, on those BSD systems
853 that have them, for controlling the resources used by pipe deliveries.
854
2632889e
PH
855PH/42 The content-scanning code uses fopen() to create files in which to put
856 message data. Previously it was not paying any attention to the mode of
857 the files. Exim runs with umask(0) because the rest of the code creates
858 files with open(), and sets the required mode explicitly. Thus, these
859 files were ending up world-writeable. This was not a big issue, because,
860 being within the spool directory, they were not world-accessible. I have
861 created a function called modefopen, which takes an additional mode
862 argument. It sets umask(777), creates the file, chmods it to the required
863 mode, then resets the umask. All the relevant calls to fopen() in the
864 content scanning code have been changed to use this function.
865
944a9c55
PH
866PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
867 to 24 hours. This avoids potential overflow problems when processing G
868 and H retry rules. I suspect nobody ever tinkers with this value.
869
4a23603b
PH
870PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
871
4730f942
PH
872PH/45 When the plaintext authenticator is running as a client, the server's
873 challenges are checked to ensure they are valid base64 strings. By
874 default, the authentication attempt is cancelled if an invalid string is
875 received. Setting client_ignore_invalid_base64 true ignores these errors.
876 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
877 they are received. Thus, the responses can be made to depend on the
878 challenges. If an invalid string is ignored, an empty string is placed in
879 the variable.
880
30dba1e6
PH
881PH/46 Messages that are created by the autoreply transport now contains a
882 References: header, in accordance with RFCs 2822 and 3834.
883
382afc6b
PH
884PH/47 Added authenticated_sender_force to the smtp transport.
885
a86229cf
PH
886PH/48 The ${prvs expansion was broken on systems where time_t was long long.
887
50c99ba6
PH
888PH/49 Installed latest patch from the Sieve maintainer.
889
d35e429d
PH
890PH/50 When an Exim quota was set without a file count quota, and mailbox_size
891 was also set, the appendfile transport was unnecessarily scanning a
892 directory of message files (e.g. for maildir delivery) to find the count
893 of files (along with the size), even though it did not need this
894 information. It now does the scan only if it needs to find either the
895 size of the count of files.
896
f90d018c
PH
897PH/51 Added ${time_eval: to convert Exim time strings into seconds.
898
75def545
PH
899PH/52 Two bugs concerned with error handling when the smtp transport is
900 used in LMTP mode:
901
902 (i) Exim was not creating retry information for temporary errors given
903 for individual recipients after the DATA command when the smtp transport
904 was used in LMTP mode. This meant that they could be retried too
905 frequently, and not timed out correctly.
906
907 (ii) Exim was setting the flag that allows error details to be returned
908 for LMTP errors on RCPT commands, but not for LMTP errors for individual
909 recipients that were returned after the DATA command.
910
911PH/53 This is related to PH/52, but is more general: for any failing address,
912 when detailed error information was permitted to be returned to the
913 sender, but the error was temporary, then after the final timeout, only
914 "retry timeout exceeded" was returned. Now it returns the full error as
915 well as "retry timeout exceeded".
916
c46782ef
PH
917PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
918 do this, and (what is worse) MTAs that accept it.
919
71fafd95
PH
920PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
921 will now be deprecated.
922
2c5db4fd
PH
923PH/56 New os.c-cygwin from the Cygwin maintainer.
924
9cf6b11a
JJ
925JJ/06 exipick: added --unsorted option to allow unsorted output in all output
926 formats (previously only available in exim formats via -bpr, -bpru,
927 and -bpra. Now also available in native and exiqgrep formats)
928
929JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
930 with very large, slow to parse queues
931
932JJ/08 exipick: added ! as generic prefix to negate any criteria format
933
934JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
935
898d150f
PH
936PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
937 responses to authentication challenges, though it was showing the
938 challenges; (ii) I've removed the CR characters from the debug output for
939 SMTP output lines.
940
46218253
PH
941PH/58 Allow for the insertion of a newline as well as a space when a string
942 is turned into more than one encoded-word during RFC 2047 encoding. The
943 Sieve code now uses this.
944
e97957bc
PH
945PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
946 data_4xx, lost_connection, tls_required.
947
81e509d7
PH
948PH/60 When a VRFY deferred or FAILED, the log message rather than the user
949 message was being sent as an SMTP response.
950
3d240ff7
PH
951PH/61 Add -l and -k options to exicyclog.
952
b37c4101
PH
953PH/62 When verifying, if an address was redirected to one new address, so that
954 verification continued, and the new address failed or deferred after
955 having set something in $address_data, the value of $address_data was not
956 passed back to the ACL. This was different to the case when no
957 redirection occurred. The value is now passed back in both cases.
958
79378e0f
PH
959PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
960 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
961 use login_cap.h, so on its own it isn't the distinguishing feature. The
962 new name refers directly to the setclassresources() function.
963
e49c7bb4
PH
964PH/65 Added configuration files for NetBSD3.
965
d114ec46
PH
966PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
967
f3d7df6c
PH
968PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
969 is preferred over IPv4.
970
715ab376
PH
971PH/68 The bounce_return_message and bounce_return_body options were not being
972 honoured for bounces generated during the reception of non-SMTP messages.
973 In particular, this applied to messages rejected by the ACL. This bug has
974 been fixed. However, if bounce_return_message is true and bounce_return_
975 body is false, the headers that are returned for a non-SMTP message
976 include only those that have been read before the error was detected.
977 (In the case of an ACL rejection, they have all been read.)
978
6b31b150
PH
979PH/69 The HTML version of the specification is now built in a directory called
980 spec_html instead of spec.html, because the latter looks like a path with
981 a MIME-type, and this confuses some software.
982
983PH/70 Catch two compiler warnings in sieve.c.
984
d515a917
PH
985PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
986 function verify_get_ident() calls ip_connect() to connect a socket, but
987 if the "connect()" function timed out, ip_connect() used to close the
988 socket. However, verify_get_ident() also closes the socket later, and in
989 between Exim writes to the log, which may get opened at this point. When
990 the socket was closed in ip_connect(), the log could get the same file
991 descriptor number as the socket. This naturally causes chaos. The fix is
992 not to close the socket in ip_connect(); the socket should be closed by
993 the function that creates it. There was only one place in the code where
994 this was missing, in the iplookup router, which I don't think anybody now
995 uses, but I've fixed it anyway.
996
9b8fadde
PH
997PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
998 well as to direct DNS lookups. Otherwise the handling of names in host
999 lists is inconsistent and therefore confusing.
1000
214e2000 1001
5de37277
PH
1002Exim version 4.60
1003-----------------
1004
cc38ddbf
PH
1005PH/01 Two changes to the default runtime configuration:
1006
1007 (1) Move the checks for relay_from_hosts and authenticated clients from
1008 after to before the (commented out) DNS black list checks.
1009
1010 (2) Add control=submission to the relay_from_hosts and authenticated
1011 clients checks, on the grounds that messages accepted by these
1012 statements are most likely to be submissions.
5de37277 1013
72fdd6ae
PH
1014PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1015
1016 (1) Generate an error if the third argument for the ${prvs expansion is
1017 not a single digit.
1018
1019 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1020 string.
1021
1022 (3) Reset the variables that are obtained from the first argument of
1023 ${prvscheck and used in the second argument before leaving the code,
1024 because their memory is reclaimed, so using them afterwards may do
1025 silly things.
1026
1027 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1028 one (it's much easier than Tom thought :-).
1029
1030 (5) Because of (4), we can now allow for the use of $prvscheck_result
1031 inside the third argument.
cb9328de 1032
cb741023
PH
1033PH/03 For some reason, the default setting of PATH when running a command from
1034 a pipe transport was just "/usr/bin". I have changed it to
1035 "/bin:/usr/bin".
1036
f174f16e
PH
1037PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1038 anything to be listed in the output from -bV.
b2f5a032 1039
c25242d7
PH
1040PH/05 When a filter generated an autoreply, the entire To: header line was
1041 quoted in the delivery log line, like this:
1042
1043 => >A.N.Other <ano@some.domain> <original@ddress> ...
1044
1045 This has been changed so that it extracts the operative address. There
1046 may be more than one such address. If so, they are comma-separated, like
1047 this:
1048
1049 => >ano@some.domain,ona@other.domain <original@ddress> ...
1050
82c19f95
PH
1051PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1052 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1053 not being looked up in the rDNS to get a host name, Exim was showing the
1054 IP address twice in Received: lines, even though the IP addresses were
1055 identical. For example:
1056
1057 Received: from [1.2.3.4] (helo=[1.2.3.4])
1058
1059 However, if the real host name was known, it was omitting the HELO data
1060 if it matched the actual IP address. This has been tidied up so that it
1061 doesn't show the same IP address twice.
1062
d7ffbc12
PH
1063PH/07 When both +timestamp and +memory debugging was on, the value given by
1064 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1065 called by the debug printing, thereby overwriting the timestamp buffer.
1066 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1067
9f526266
PH
1068PH/08 When the original message was included in an autoreply transport, it
1069 always said "this is a copy of the message, including all the headers",
1070 even if body_only or headers_only was set. It now gives an appropriate
1071 message.
1072
87fcc8b9
PH
1073PH/09 Applied a patch from the Sieve maintainer which:
1074
1075 o fixes some comments
1076 o adds the (disabled) notify extension core
1077 o adds some debug output for the result of if/elsif tests
1078 o points to the current vacation draft in the documentation
1079 and documents the missing references header update
1080
1081 and most important:
1082
1083 o fixes a bug in processing the envelope test (when testing
1084 multiple envelope elements, the last element determinted the
1085 result)
1086
456682f5
PH
1087PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1088 Electronic Mail") by including:
1089
1090 Auto-submitted: auto-generated
1091
1092 in the messages that it generates (bounce messages and others, such as
1093 warnings). In the case of bounce messages for non-SMTP mesages, there was
1094 also a typo: it was using "Auto_submitted" (underscore instead of
1095 hyphen). Since every message generated by Exim is necessarily in response
1096 to another message, thes have all been changed to:
1097
1098 Auto-Submitted: auto-replied
1099
1100 in accordance with these statements in the RFC:
1101
1102 The auto-replied keyword:
1103
1104 - SHOULD be used on messages sent in direct response to another
1105 message by an automatic process,
1106
1107 - MUST NOT be used on manually-generated messages,
1108
1109 - MAY be used on Delivery Status Notifications (DSNs) and Message
1110 Disposition Notifications (MDNs),
1111
1112 - MUST NOT be used on messages generated by automatic or periodic
1113 processes, except for messages which are automatic responses to
1114 other messages.
1115
3e46c1aa
PH
1116PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1117 to the default Received: header definition.
456682f5 1118
49826d12
PH
1119PH/12 Added log selector acl_warn_skipped (default on).
1120
eba0c039
PH
1121PH/13 After a successful wildlsearch lookup, discard the values of numeric
1122 variables because (a) they are in the wrong storage pool and (b) even if
1123 they were copied, it wouldn't work properly because of the caching.
1124
a0d6ba8a
PH
1125PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1126 checking when decoding. Apparently there are clients that generate
1127 overlong encoded strings. Why am I not surprised?
1128
f0917727
PH
1129PH/15 If the first argument of "${if match_address" was not empty, but did not
1130 contain an "@" character, Exim crashed. Now it writes a panic log message
1131 and treats the condition as false.
1132
096fee00
PH
1133PH/16 In autoreply, treat an empty string for "once" the same as unset.
1134
024bd3c2
PH
1135PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1136 extension "envelope-auth". The code is finished and in agreement with
1137 other implementations, but there is no documentation so far and in fact,
1138 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1139 not changing the active code.
1140
1141 Print executed "if" and "elsif" statements when debugging is used. This
1142 helps a great deal to understand what a filter does.
1143
1144 Document more things not specified clearly in RFC3028. I had all this
1145 sorted out, when out of a sudden new issues came to my mind. Oops."
1146
df199fec
PH
1147PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1148 (Bugzilla #53).
1149
d27f1df3
PH
1150PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1151 canonical form (as documented). However, after a host name lookup from
1152 the IP address, check_host() was doing a simple string comparison with
1153 addresses acquired from the DNS when checking that the found name did
1154 have the original IP as one of its addresses. Since any found IPv6
1155 addresses are likely to be in abbreviated form, the comparison could
1156 fail. Luckily, there already exists a function for doing the comparison
1157 by converting both addresses to binary, so now that is used instead of
1158 the text comparison.
1159
96776534
PH
1160PH/20 There was another similar case to PH/19, when a complete host name was
1161 given in a host list; looking up its IP address could give an abbreviated
1162 form, whereas the current host's name might or might not be abbreviated.
1163 The same fix has been applied.
1164
5de37277 1165
9a799bc0
PH
1166Exim version 4.54
1167-----------------
1168
1169PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1170 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1171 It now does.
1172
99a4b039
PH
1173PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1174 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1175
1176PH/03 Typo: missing ".o" in src/pcre/Makefile.
1177
4b233853
PH
1178PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1179 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1180 Also, for "Auto-Submitted", treat anything other than "no" as
1181 non-personal, in accordance with RFC 3834. (Previously it treated
1182 anything starting "auto-" as non-personal.)
1183
8857ccfd
PH
1184TF/01 The control=submission/name=... option had a problem with syntax
1185 errors if the name included a slash character. The /name= option
1186 now slurps the rest of the string, so it can include any characters
1187 but it must come last in the list of options (after /sender_retain
1188 or /domain=).
1189
433a2980
PH
1190PH/05 Some modifications to the interface to the fake nameserver for the new
1191 testing suite.
1192
3e46c1aa 1193
9a799bc0 1194
e3a311ba
TK
1195Exim version 4.53
1196-----------------
1197
1198TK/01 Added the "success_on_redirect" address verification option. See
1199 NewStuff for rationale and an example.
1200
13b685f9
PH
1201PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1202
395ff96d
PH
1203PH/02 Patch to exigrep to allow it to work on syslog lines.
1204
5b68f6e4
PH
1205PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1206 fread() to skip over the body file's header line, because in Cygwin the
1207 header line is locked and is inaccessible.
1208
1ab52c69
PH
1209PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1210 co-exist for some time) to make it clear that it is the Exim ID that is
1211 referenced, not the Message-ID: header line.
1212
b07e6aa3
PH
1213PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1214 string_format() function, because snprintf() does not exist on all
1215 operating systems.
1216
254e032f
PH
1217PH/06 The use of forbid_filter_existstest now also locks out the use of the
1218 ${stat: expansion item.
1219
3af76a81
PH
1220PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1221 protocol synchronization error", to keep the pedants happy.
1222
2548ba04
PH
1223PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1224 well as for IRIX systems, when gcc is being used. See the host.c source
1225 file for comments.
1226
b6c6011d
PH
1227PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1228
cf39cf57
PH
1229PH/10 Named domain lists were not working if used in a queue_smtp_domains
1230 setting.
1231
f1513293
PH
1232PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1233 transport and to the smtp transport in LMTP mode.
1234
727549a4
PH
1235TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1236
af46795e
PH
1237PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1238 run a filter in a subprocess. This could lead to confusion in subsequent
1239 lookups in the parent process. There should also be a search_tidyup() at
1240 the end of the subprocess.
1241
d7b47fd0
PH
1242PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1243 only if the host matched helo_try_verify_hosts, which caused the
1244 verification to occur when the EHLO/HELO command was issued. The ACL just
1245 tested the remembered result. Now, if a previous verification attempt has
1246 not happened, "verify = helo" does it there and then.
1247
ee744174
JJ
1248JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1249
b582ab87
PH
1250TK/03 Fix log output including CR from clamd.
1251
41a13e0a
PH
1252PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1253 exist provoked a memory error which could cause a segfault.
1254
f625cc5a
PH
1255PH/15 Installed PCRE 6.2
1256
1257PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1258
21f7af35
PH
1259PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1260 of the problem. Specifically, suggested +O2 rather than +O1 for the
1261 HP-UX compiler.
1262
31480e42
PH
1263PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1264
2d280592
PH
1265PH/20 If a delivery was routed to a non-standard port by means of an SRV
1266 record, the port was not correctly logged when the outgoing_port log
1267 selector was set (it logged the transort's default port).
1268
7cd1141b
PH
1269PH/21 Added support for host-specific ports to manualroute, queryprogram,
1270 fallback_hosts, and "hosts" in the smtp transport.
1271
1272PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1273 host errors such as "Connection refused".
1274
750af86e
PH
1275PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1276 authentication with radiusclient 0.4.9:
1277
1278 - Error returned from rc_read_config was caught wrongly
1279 - Username/password not passed on to radius server due to wrong length.
1280
1281 The presumption is that some radiusclient API changes for 4.51/PH/17
1282 were not taken care of correctly. The code is still untested by me (my
1283 Linux distribution still has 0.3.2 of radiusclient), but it was
1284 contributed by a Radius user.
1285
1286PH/24 When doing a callout, the value of $domain wasn't set correctly when
1287 expanding the "port" option of the smtp transport.
1288
4304270b
TK
1289TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1290 while reading a MIME header. Thanks to Tom Hughes for a patch.
1291
750af86e
PH
1292PH/24 Include config.h inside local_scan.h so that configuration settings are
1293 available.
1294
64ffc24f
PH
1295PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1296 that in an ACL for RCPT (for example), you can examine exactly what was
1297 received.
1298
5dd9625b
PH
1299PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1300 commands, but it was not correctly comparing the address with the actual
1301 client host address. Thus, it would show the EHLO address in Received:
1302 header lines when this was not necessary.
1303
5591031b
PH
1304PH/27 Added the % operator to ${eval:}.
1305
ba18e66a
PH
1306PH/28 Exim tries to create and chdir to its spool directory when it starts;
1307 it should be ignoring failures (because with -C, for example, it has lost
1308 privilege). It wasn't ignoring creation failures other than "already
1309 exists".
1310
9cec981f
PH
1311PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1312 -bV or -d is used.
1313
aa2b5c79
PH
1314PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1315 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1316 too many continuations, the temporary file was not being removed, and the
1317 return code was incorrect.
aa2b5c79 1318
48a53b7f
PH
1319PH/31 Missing "BOOL" in function definition in filtertest.c.
1320
1c59d63b
PH
1321PH/32 Applied Sieve patches from the maintainer.
1322
671012da
TK
1323TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1324
1509d3a8
PH
1325PH/33 Added "verify = not_blind".
1326
1327PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1328 Local/Makefile (with some defaults set). These are used in built scripts
1329 such as exicyclog, but they have never been used in the exim_install
1330 script (though there are many overriding facilities there). I have
1331 arranged that the exim_install script now takes note of these two
1332 settings.
1333
1334PH/35 Installed configuration files for Dragonfly.
1335
2fe1a124
PH
1336PH/36 When a locally submitted message by a trusted user did not contain a
1337 From: header, and the sender address was obtained from -f or from an SMTP
1338 MAIL command, and the trusted user did not use -F to supply a sender
1339 name, $originator_name was incorrectly used when constructing a From:
1340 header. Furthermore, $originator_name was used for submission mode
1341 messages from external hosts without From: headers in a similar way,
1342 which is clearly wrong.
1343
8800895a
PH
1344PH/37 Added control=suppress_local_fixups.
1345
ccfdb010
PH
1346PH/38 When log_selector = +received_sender was set, and the addition of the
1347 sender made the log line's construction buffer exactly full, or one byte
1348 less than full, an overflow happened when the terminating "\n" was
1349 subsequently added.
1350
1130bfb0
PH
1351PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1352 when the result of a list match is failure because a DNS lookup failed.
1353
ebcb507f
PH
1354PH/40 RM_COMMAND is now used in the building process.
1355
c35e155c
PH
1356PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1357 the "build-* directories that it finds.
1358
95d1f782
PH
1359PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1360 address in a domain literal was a prefix of an interface address.
1361
fd6de02e
PH
1362PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1363 when verifying a sender address, unless rewrite_headers is false.
1364
58de37c5
PH
1365PH/44 Wrote a long comment about why errors_to addresses are verified as
1366 recipients, not senders.
1367
261cf466
TF
1368TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1369 the ratelimit ACL was added.
1370
3ee512ff
PH
1371PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1372
e08c430f
PH
1373PH/46 Added extra information about PostgreSQL errors to the error string.
1374
bef5a11f
PH
1375PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1376 avoiding the need to install special zones in a real server. This is
1377 backwards compatible; if it can't find the fake resolver, it drops back.
1378 Thus, both old and new test suites can be run.
1379
7546de58
TF
1380TF/02 Added util/ratelimit.pl
1381
e5d5a95f
TF
1382TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1383 clock is set back in time.
1384
2e88a017
TF
1385TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1386 Candler <B.Candler@pobox.com>.
1387
a5f65aa4
TF
1388TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1389 OK for addresses that are the result of redirections.
1390
e7726cbf
PH
1391PH/48 A number of further additions for the benefit of the new test suite,
1392 including a fake gethostbyname() that interfaces to the fake DNS resolver
1393 (see PH/47 above).
1394
a7fdad5b
TF
1395TF/06 The fix for widen_domains has also been applied to qualify_single and
1396 search_parents which are the other dnslookup options that can cause
1397 header rewrites.
1398
6af56900
PH
1399PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1400 type ("H").
1401
0925ede6
PH
1402PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1403
66afa403
TF
1404TF/07 Exim produced the error message "an SRV record indicated no SMTP
1405 service" if it encountered an MX record with an empty target hostname.
1406 The message is now "an MX or SRV record indicated no SMTP service".
1407
0154e85a
TF
1408TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1409 if the DNS of the sending site is misconfigured. This is quite a
1410 common situation. This change restores the behaviour of treating a
1411 helo verification defer as a failure.
1412
16f12c76
PH
1413PH/51 If self=fail was set on a router, the bounce message did not include the
1414 actual error message.
1415
bbe902f0 1416
e5a9dba6
PH
1417Exim version 4.52
1418-----------------
1419
1420TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1421
22c3b60b
PH
1422PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1423 command itself ended in error, the underlying message about the transport
1424 filter timeout was being overwritten with the pipe command error. Now the
1425 underlying error message should be appended to the second error message.
1426
06a9b4b5
PH
1427TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1428
c1ac6996
PH
1429PH/02 Reduce the amount of output that "make" produces by default. Full output
1430 can still be requested.
1431
9c7a242c
PH
1432PH/03 The warning log line about a condition test deferring for a "warn" verb
1433 was being output only once per connection, rather than after each
1434 occurrence (because it was using the same function as for successful
1435 "warn" verbs). This seems wrong, so I have changed it.
1436
87ba3f5f
PH
1437TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1438 it should not have, which might have caused a crash in the right
1439 circumstances, but probably never did.
1440
1441PH/04 Installed a modified version of Tony Finch's patch to make submission
1442 mode fix the return path as well as the Sender: header line, and to
1443 add a /name= option so that you can make the user's friendly name appear
1444 in the header line.
1445
29aba418
TF
1446TF/03 Added the control = fakedefer ACL modifier.
1447
fe0dab11
TF
1448TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1449 Mark Lowes for thorough testing.
870f6ba8 1450
11d337a4
TK
1451TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1452
1453TK/03 Merged latest SRS patch from Miles Wilton.
1454
415c8f3b
PH
1455PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1456 with the definition in sysexits.h (which is #included earlier).
1457 Fortunately, Exim does not actually use EX_OK. The code used to try to
1458 preserve the sysexits.h value, by assumimg that macro definitions were
1459 scanned for macro replacements. I have been disabused of this notion,
1460 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1461
958541e9
PH
1462PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1463 in the smtp transport. When a block could not be written in a single
1464 write() function, the timeout was being re-applied to each part-write.
1465 This seems wrong - if the receiver was accepting one byte at a time it
1466 would take for ever. The timeout is now adjusted when this happens. It
1467 doesn't have to be particularly precise.
1468
c206415f
TK
1469TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1470 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1471
2a4be8f9
PH
1472PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1473 without a domain if the check to <postmaster@domain> fails.
1474
1cba11c5
SC
1475SC/01 Eximstats: added -xls and the ability to specify output files
1476 (patch written by Frank Heydlauf).
1477
1478SC/02 Eximstats: use FileHandles for outputing results.
1479
1480SC/03 Eximstats: allow any combination of xls, txt, and html output.
1481
1482SC/04 Eximstats: fixed display of large numbers with -nvr option
1483
1484SC/05 Eximstats: fixed merging of reports with empty tables.
1485
1486SC/06 Eximstats: added the -include_original_destination flag
1487
1488SC/07 Eximstats: removed tabs and trailing whitespace.
1489
1005d00e
TK
1490TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1491
1492TK/06 MBOX spool code: Add real "From " MBOX separator line
1493 so the .eml file is really in mbox format (even though
1494 most programs do not really care). Patch from Alex Miller.
1495
1496TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1497 The latter is generated from $received_to and is only set if the
1498 message has one envelope recipient. SA can use these headers,
1499 obviously out-of-the-box. Patch from Alex Miller.
1500
9b4768fa
PH
1501PH/08 The ${def test on a variable was returning false if the variable's
1502 value was "0", contrary to what the specification has always said!
1503 The result should be true unless the variable is empty.
1504
1505PH/09 The syntax error of a character other than { following "${if
1506 def:variable_name" (after optional whitespace) was not being diagnosed.
1507 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1508 accidental colon was present, for example, could give incorrect results.
1509
0d7eb84a
PH
1510PH/10 Tidied the code in a number of places where the st_size field of a stat()
1511 result is used (not including appendfile, where other changes are about
1512 to be made).
1513
1514PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1515 This involved changing a lot of size variables from int to off_t. It
1516 should work with maildirs and everything.
1517
40727bee
TK
1518TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1519 spamd dying while we are connected to it.
1520
554d2369
TF
1521TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1522 <jgh@wizmail.org>
1523
1f922db1
PH
1524PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1525 function for BDB 4.3.
1526
ef213c3b
PH
1527PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1528
8ac170f3
PH
1529PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1530 the sources for PCRE have been re-arranged and more files are now
1531 involved.
1532
b1c749bb
PH
1533PH/15 The code I had for printing potentially long long variables in PH/11
1534 above was not the best (it lost precision). The length of off_t variables
1535 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1536 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1537 to be "long long int" or "long int". This is needed for the internal
1538 formatting function string_vformat().
b1c749bb 1539
4aac9b49
PH
1540PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1541 the configuration file to be ":syslog", then the script "guesses" where
1542 the logs files are, rather than using the compiled in default. In our
1543 case the guess is not the same as the compiled default, so the script
1544 suddenly stopped working when I started to use syslog. The patch checks
1545 to see if log_file_path is "". If so, it attempts to read it from exim
1546 with no configuration file to get the compiled in version, before it
1547 falls back to the previous guessing code."
1548
294520c8
TK
1549TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1550 implementing BATV in an Exim configuration. See NewStuff for the gory
1551 details.
1552
5bd022fe
PH
1553PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1554 Makefile that are specific to HP-UX.
1555
90e9ce59
PH
1556PH/18 If the "use_postmaster" option was set for a recipient callout together
1557 with the "random" option, the postmaster address was used as the MAIL
1558 FROM address for the random test, but not for the subsequent recipient
1559 test. It is now used for both.
1560
5ea81592
PH
1561PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1562 patch removes a few documentation additions to RFC 3028, because the
1563 latest draft now contains them. It adds the new en;ascii-case comparator
1564 and a new error check for 8bit text in MIME parts. Comparator and
1565 require names are now matched exactly. I enabled the subaddress
1566 extension, but it is not well tested yet (read: it works for me)."
1567
c6c2dc1d
PH
1568PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1569 rework some of the code of TK/09 above to avoid the hardwired use of
1570 "%lld" and "long long". Replaced the call to snprintf() with a call to
1571 string_vformat().
1572
fffffe4c
PH
1573PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1574 records point to non-existent hosts", "retry timeout exceeded", and
1575 "retry time not reached for any host after a long failure period".
ca02eafb 1576
9a26b6b2
PH
1577PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1578 experimental DomainKeys support:
1579
1580 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1581 (2) On an error such as an illegally used "control", the wrong name for
1582 the control was given.
1583
1584 These problems did NOT occur unless DomainKeys support was compiled.
1585
4aee0225
PH
1586PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1587
32d668a5
PH
1588PH/24 Added ${if match_ip condition.
1589
8187c3f3
PH
1590PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1591 databases so that it will be absolutely obvious if a crash occurs in the
1592 DB library. This is a regular occurrence (often caused by mis-matched
1593 db.h files).
1594
ff790e47 1595PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1596 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1597 picked up on a user's system that detects such things. There doesn't seem
1598 to be a gcc warning option for this - only an attribute that has to be
1599 put on the function's prototype. It seems that in Fedora Core 4 they have
1600 set this on a number of new functions. No doubt there will be more in due
1601 course.
ff790e47 1602
5417f6d1
PH
1603PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1604 specify a transport. However, if an address that was verified by such a
1605 router was the subject of a callout, Exim crashed because it tried to
1606 read the rcpt_include_affixes from the non-existent transport. Now it
1607 just assumes that the setting of that option is false. This bug was
1608 introduced by 4.51/PH/31.
1609
59cf8544
PH
1610PH/28 Changed -d+all to exclude +memory, because that information is very
1611 rarely of interest, but it makes the output a lot bigger. People tend to
1612 do -d+all out of habit.
1613
e7ad8a65
PH
1614PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1615 code in os-type was giving problems when libc.so lives in lib64, like on
1616 x86_64 Fedora Core.
1617
ade42478
PH
1618PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1619 aren't the modern standard, and it seems that some systems' include files
1620 don't always have them. Exim was already checking for some of the newer
1621 ones like T_AAAA, and defining it itself. I've added checks for all the
1622 record types that Exim uses.
1623
182ad5cf
PH
1624PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1625 not automatically generating a new one, as it is supposed to. This
1626 prevented TLS from working. If the file did exist, but contained invalid
1627 data, a new version was generated, as expected. It was only the case of a
1628 non-existent file that was broken.
1629
b0d9fc80
TK
1630TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1631 with a change in libdomainkeys > 0.64.
1632
1633TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1634 from DNS. If the selector record carries the flag, it now has
1635 precedence over the domain-wide flag.
1636
1637TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1638
47c7a64a
PH
1639PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1640 the use of a port name that isn't defined in /etc/services) occurred, the
1641 message was deferred as in a normal delivery, and thus remained on the
1642 spool, instead of being failed because of the mua_wrapper setting. This
1643 is now fixed, and I tidied up some of the mua_wrapper messages at the
1644 same time.
1645
a388bce4
SC
1646SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1647 the messages in a hash of arrays rather than using individual hashes.
1648 This is a bit cleaner and results in dramatic memory savings, albeit
1649 at a slight CPU cost.
1650
1651SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1652 as requested by Marc Sherman.
1653
1654SC/10 Eximstats: added histograms for user specified patterns as requested
1655 by Marc Sherman.
1656
0793e4ed
SC
1657SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1658
c58b88df
PH
1659PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1660 fopen() in the content-scanning modules that did not already have it.
1661
e7ad8a65 1662
7982096b
PH
1663Exim version 4.51
1664-----------------
1665
1a46a8c5
PH
1666TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1667 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1668
2f079f46 1669TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1670
1671TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1672
1673PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1674 to test Sieve filters that use "vacation".
1675
1676PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1677 that changes the way the GnuTLS parameters are stored in the cache file.
1678 The new format can be generated externally. For backward compatibility,
1679 if the data in the cache doesn't make sense, Exim assumes it has read an
1680 old-format file, and it generates new data and writes a new file. This
1681 means that you can't go back to an older release without removing the
1682 file.
1683
1684PH/03 A redirect router that has both "unseen" and "one_time" set does not
1685 work if there are any delivery delays because "one_time" forces the
1686 parent to be marked "delivered", so its unseen clone is never tried
1687 again. For this reason, Exim now forbids the simultaneous setting of
1688 these two options.
1689
1690PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1691 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1692 entry if you want to know the details. The fix, however, neglected to
1693 consider the case when local delivery batching is involved. The test for
1694 "previously delivered" was not happening when checking to see if an
1695 address could be batched with a previous (undelivered) one; under
1696 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1697 address.
1a46a8c5
PH
1698
1699PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1700 in its include files, and this causes problems building Exim.
1701
1702PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1703 header_syntax) but Exim was just ignoring anything given after a slash.
1704 In particular, this caused confusion with an attempt to use "verify =
1705 reverse_host_lookup/defer_ok". An error is now given when options are
1706 supplied for verify items that do not have them. (Maybe reverse_host_
1707 lookup should have a defer_ok option, but that's a different point.)
1708
1709PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1710 defined by RFC 821) to 2048, because there were problems with some AUTH
1711 commands, and RFC 1869 says the size should be increased for extended
1712 SMTP commands that take arguments.
1713
1714PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1715 Finch).
1716
1717PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1718 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1719
49c2d5ea
PH
1720PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1721 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1722 whatever). Otherwise the password may appear in the log. Following change
1723 PH/42 below, there is no longer a chance of it appearing in a bounce
1724 message.
49c2d5ea 1725
bf759a8b
PH
1726PH/11 Installed exipick version 20050225.0 from John Jetmore.
1727
83364d30
PH
1728PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1729 of its addresses was ever tried. (Bugzilla bug #2.)
1730
7999bbd7
PH
1731PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1732 the result incorrectly in the debug output. (It correctly added a newline
1733 to what was transported.)
1734
7dbf77c9
PH
1735TF/01 Added $received_time.
1736
74e0617f
PH
1737PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1738 commented out examples of how to interface to a virus scanner and to
1739 SpamAssassin. Also added commented examples of av_scanner and
1740 spamd_address settings.
1741
2f079f46
PH
1742PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1743 and controls are allowed in which ACLs. There were a couple of minor
1744 errors. Some of the entries in the conditions table (which is a table of
1745 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1746 negation of where the condition IS allowed.
1747
8c841523
PH
1748PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1749
7766a4f0
PH
1750PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1751 header file does not have a version number, so I've had to invent a new
1752 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1753 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1754 radiusclient), but it was contributed by a Radius user.
1755
8b417f2c
PH
1756PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1757 files or directories, for OpenSSL.
1758
901f42cb
PH
1759PH/19 When an Exim process that is running as root has to create an Exim log
1760 file, it does so in a subprocess that runs as exim:exim so as to get the
1761 ownership right at creation (otherwise, other Exim processes might see
1762 the file with the wrong ownership). There was no test for failure of this
1763 fork() call, which would lead to the process getting stuck as it waited
1764 for a non-existent subprocess. Forks do occasionally fail when resources
1765 run out. I reviewed all the other calls to fork(); they all seem to check
1766 for failure.
1767
f9b9210e
PH
1768PH/20 When checking for unexpected SMTP input at connect time (before writing
1769 the banner), Exim was not dealing correctly with a non-positive return
1770 from the read() function. If the client had disconnected by this time,
1771 the result was a log entry for a synchronization error with an empty
1772 string after "input=" when read() returned zero. If read() returned -1
1773 (an event I could not check), uninitialized data bytes were printed.
1774 There were reports of junk text (parts of files, etc) appearing after
1775 "input=".
1776
54cdb463
PH
1777PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1778
cf00dad6
PH
1779PH/22 Added support for macro redefinition, and (re)definition in between
1780 driver and ACL definitions.
1781
acb1b346
PH
1782PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1783 forgetting to use the resulting value; it was using the unexpanded value.
1784
c5ddb310
PH
1785PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1786 hadn't been configured. The fix is from Juergen Kreileder, who
1787 understands it better than I do:
1788
1789 "Here's what I see happening with three configured cyrus_sasl
1790 authenticators configured (plain, login, cram-md5):
1791
1792 On startup auth_cyrus_sasl_init() gets called for each of these.
1793 This means three calls to sasl_listmech() without a specified mech_list.
1794 => SASL tests which mechs of all available mechs actually work
1795 => three warnings about OTP not working
1796 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1797
1798 With the patch, sasl_listmech() also gets called three times. But now
1799 SASL's mech_list option is set to the server_mech specified in the the
1800 authenticator. Or in other words, the answer from sasl_listmech()
1801 gets limited to just the mech you're testing for (which is different
1802 for each call.)
1803 => the return list contains just 'plain' or 'login', 'cram-md5' or
1804 nothing depending on the value of ob->server_mech.
1805
1806 I've just tested the patch: Authentication still works fine,
1807 unavailable mechs specified in the exim configuration are still
1808 caught, and the auth.log warnings about OTP are gone."
1809
31619da6
PH
1810PH/25 When debugging is enabled, the contents of the command line are added
1811 to the debugging output, even when log_selector=+arguments is not
1812 specified.
1813
bebaf0fc
PH
1814PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1815 answer is "GNU", and only if the return is "GNU/something" is the answer
1816 "Linux".
1817
475fe28a
PH
1818PH/27 $acl_verify_message is now set immediately after the failure of a
1819 verification in an ACL, and so is available in subsequent modifiers. In
1820 particular, the message can be preserved by coding like this:
1821
1822 warn !verify = sender
1823 set acl_m0 = $acl_verify_message
1824
1825 Previously, $acl_verify_message was set only while expanding "message"
1826 and "log_message" when a very denied access.
1827
7e8bec7a
PH
1828PH/28 Modified OS/os.c-Linux with
1829
1830 -#ifndef OS_LOAD_AVERAGE
1831 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1832
1833 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1834 nomenclature these days.)
1835
e4a89c47
PH
1836PH/29 Installed patch from the Sieve maintainer that adds the options
1837 sieve_useraddress and sieve_subaddress to the redirect router.
1838
5ca2a9a1
PH
1839PH/30 In these circumstances:
1840 . Two addresses routed to the same list of hosts;
1841 . First host does not offer TLS;
1842 . First host accepts first address;
1843 . First host gives temporary error to second address;
1844 . Second host offers TLS and a TLS session is established;
1845 . Second host accepts second address.
1846 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1847 and peerdn, if requested) that were in fact used only for the second
1848 address.
7e8bec7a 1849
c688b954
PH
1850PH/31 When doing a callout as part of verifying an address, Exim was not paying
1851 attention to any local part prefix or suffix that was matched by the
1852 router that accepted the address. It now behaves in the same way as it
1853 does for delivery: the affixes are removed from the local part unless
1854 rcpt_include_affixes is set on the transport.
1855
fed77020
PH
1856PH/32 Add the sender address, as F=<...>, to the log line when logging a
1857 timeout during the DATA phase of an incoming message.
1858
7fe1560f
PH
1859PH/33 Sieve envelope tests were broken for match types other than :is. I have
1860 applied a patch sanctioned by the Sieve maintainer.
c688b954 1861
ebb6e6d5
PH
1862PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1863 the uid or gid is negative. A case of a negative gid caused this to be
1864 noticed. The fix allows for either to be negative.
1865
9c4e8f60
PH
1866PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1867 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1868 overlooked.
1869
1870PH/36 The change PH/12 above was broken. Fixed it.
1871
d7174846
PH
1872PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1873 the grounds that routing the same address twice would always produce the
1874 same answer. This might have been true once, but it is certainly no
1875 longer true now. Routing a child address may depend on the previous
1876 routing that produced that child. Some complicated redirection strategies
1877 went wrong when messages had multiple recipients, and made Exim's
1878 behaviour dependent on the order in which the addresses were given.
1879
1880 I have moved the duplicate checking until after the routing is complete.
1881 Exim scans the addresses that are assigned to local and remote
1882 transports, and removes any duplicates. This means that more work will be
1883 done, as duplicates will always all be routed, but duplicates are
1884 presumably rare, so I don't expect this is of any significance.
1885
1886 For deliveries to pipes, files, and autoreplies, the duplicate checking
1887 still happens during the routing process, since they are not going to be
1888 routed further.
1889
cfe75fc3
PH
1890PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1891 It corrects a timeout issue with spamd. This is Ian's comment: "The
1892 background is that sometimes spamd either never reads data from a
1893 connection it has accepted, or it never writes response data. The exiscan
1894 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1895 blindly assumes that writes won't block so it may never time out."
1896
be22d70e
PH
1897PH/39 Allow G after quota size as well as K and M.
1898
0612b098
PH
1899PH/40 The value set for $authenticated_id in an authenticator may not contain
1900 binary zeroes or newlines because the value is written to log lines and
1901 to spool files. There was no check on this. Now the value is run through
1902 the string_printing() function so that such characters are converted to
1903 printable escape sequences.
1904
2e0c1448
PH
1905PH/41 $message_linecount is a new variable that contains the total number of
1906 lines in the message. Compare $body_linecount, which is the count for the
1907 body only.
1908
447d236c
PH
1909PH/42 Exim no longer gives details of delivery errors for specific addresses in
1910 bounce and delay warning messages, except in certain special cases, which
1911 are as follows:
1912
1913 (a) An SMTP error message from a remote host;
1914 (b) A message specified in a :fail: redirection;
1915 (c) A message specified in a "fail" command in a system filter;
1916 (d) A message specified in a FAIL return from the queryprogram router;
1917 (e) A message specified by the cannot_route_message router option.
1918
1919 In these cases only, Exim does include the error details in bounce and
1920 warning messages. There are also a few cases where bland messages such
1921 as "unrouteable address" or "local delivery error" are given.
1922
d20976dc
PH
1923PH/43 $value is now also set for the "else" part of a ${run expansion.
1924
f656d135
PH
1925PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1926 being worked on, but at least Exim now implements the latest version to
1927 play with."
1928
2e2a30b4
PH
1929PH/45 In a pipe transport, although a timeout while waiting for the pipe
1930 process to complete was treated as a delivery failure, a timeout while
1931 writing the message to the pipe was logged, but erroneously treated as a
1932 successful delivery. Such timeouts include transport filter timeouts. For
1933 consistency with the overall process timeout, these timeouts are now
1934 treated as errors, giving rise to delivery failures by default. However,
1935 there is now a new Boolean option for the pipe transport called
1936 timeout_defer, which, if set TRUE, converts the failures into defers for
1937 both kinds of timeout. A transport filter timeout is now identified in
1938 the log output.
1939
9176e9f0
PH
1940PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1941 systems where "make" and "gmake" are different, calling "gmake" at top
1942 level broke things. I've arranged for the value of $(MAKE) to be passed
1943 from the Makefile to this script so that it can call the same version of
1944 "make".
1945
7982096b 1946
bbe902f0
PH
1947A note about Exim versions 4.44 and 4.50
1948----------------------------------------
1949
1950Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1951changes of various kinds. As a consequence, a big documentation update was
1952needed. This delayed the release for rather longer than seemed good, especially
1953in the light of a couple of (minor) security issues. Therefore, the changes
1954that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1955release. So 4.44 and 4.50 are in effect two different branches that both start
1956from 4.43.
1957
1958I have left the 4.50 change log unchanged; it contains all the changes since
19594.43. The change log for 4.44 is below; many of its items are identical to
1960those for 4.50. This seems to be the most sensible way to preserve the
1961historical information.
1962
1963
f7b63901 1964Exim version 4.50
495ae4b0
PH
1965-----------------
1966
5fe762f6
PH
1967 1. Minor wording change to the doc/README.SIEVE file.
1968
139059f6 1969 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1970 computation of the current number of files was incorrect.
495ae4b0 1971
7086e875
PH
1972 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1973 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1974 place.
1975
35af9f61
PH
1976 4. Give more explanation in the error message when the command for a transport
1977 filter fails to execute.
1978
b668c215
PH
1979 5. There are several places where Exim runs a non-Exim command in a
1980 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1981 was being done only for the command run by the queryprogram router. It is
1982 now done for all such subprocesses. The other cases are: ${run, transport
1983 filters, and the commands run by the lmtp and pipe transports.
1984
a494b1e1
PH
1985 6. Added CONFIGURE_GROUP build-time option.
1986
1987 7. Some older OS have a limit of 256 on the maximum number of file
1988 descriptors. Exim was using setrlimit() to set 1000 as a large value
1989 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1990 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1991
c5fcb476
PH
1992 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1993 was an oversight, and furthermore, ever since the addition of extra
1994 controls (e.g. 4.43/32), the checks on when to allow different forms of
1995 "control" were broken. There should now be diagnostics for all cases when a
1996 control that does not make sense is encountered.
1997
69358f02
PH
1998 9. Added the /retain_sender option to "control=submission".
1999
5be20824
PH
200010. $recipients is now available in the predata ACL (oversight).
2001
eb2c0248
PH
200211. Tidy the search cache before the fork to do a delivery from a message
2003 received from the command line. Otherwise the child will trigger a lookup
2004 failure and thereby defer the delivery if it tries to use (for example) a
2005 cached ldap connection that the parent has called unbind on.
2006
2a3eea10
PH
200712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2008 of $address_data from the recipient verification was clobbered by the
2009 sender verification.
2010
201113. The value of address_data from a sender verification is now available in
2012 $sender_address_data in subsequent conditions in the ACL statement.
2013
23c7ff99
PH
201414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2015
4deaf07d
PH
201615. Added a new option "connect=<time>" to callout options, to set a different
2017 connection timeout.
2018
926e1192
PH
201916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2020 was its contents. (It was OK if the option was not defined at all.)
2021
650edc6f
PH
202217. A "Completed" log line is now written for messages that are removed from
2023 the spool by the -Mrm option.
2024
2c7db3f5
PH
202518. New variables $sender_verify_failure and $recipient_verify_failure contain
2026 information about exactly what failed.
2027
3d235903
PH
202819. Added -dd to debug only the daemon process.
2029
7c7ad977
PH
203020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2031 handles timeouts, both on the server side and network timeouts. Renamed the
2032 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2033
981756db
PH
203421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2035 It is now set to "smtps".
2036
d4eb88df
PH
203722. $host_address is now set to the target address during the checking of
2038 ignore_target_hosts.
2039
204023. When checking ignore_target_hosts for an ipliteral router, no host name was
2041 being passed; this would have caused $sender_host_name to have been used if
2042 matching the list had actually called for a host name (not very likely,
2043 since this list is usually IP addresses). A host name is now passed as
2044 "[x.x.x.x]".
2045
7d468ab8
PH
204624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2047 code that specifies a non-restarting handler (typically sigaction() in
2048 modern systems) in an attempt to fix a rare and obscure crash bug.
2049
205025. Narrowed the window for a race in the daemon that could cause it to ignore
2051 SIGCHLD signals. This is not a major problem, because they are used only to
2052 wake it up if nothing else does.
2053
62c0818f
PH
205426. A malformed maildirsize file could cause Exim to calculate negative values
2055 for the mailbox size or file count. Odd effects could occur as a result.
2056 The maildirsize information is now recalculated if the size or filecount
2057 end up negative.
2058
26034054
PH
205927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2060 support for a long time. Removed HAVE_SYS_VFS_H.
2061
af66f652
PH
206228. Installed the latest version of exipick from John Jetmore.
2063
90af77f4
PH
206429. In an address list, if the pattern was not a regular expression, an empty
2065 subject address (from a bounce message) matched only if the pattern was an
2066 empty string. Non-empty patterns were not even tested. This was the wrong
2067 because it is perfectly reasonable to use an empty address as part of a
2068 database query. An empty address is now tested by patterns that are
2069 lookups. However, all the other forms of pattern expect the subject to
2070 contain a local part and a domain, and therefore, for them, an empty
2071 address still always fails if the pattern is not itself empty.
2072
d8ef3577
PH
207330. Exim went into a mad DNS loop when attempting to do a callout where the
2074 host was specified on an smtp transport, and looking it up yielded more
2075 than one IP address.
2076
5cb8cbc6
PH
207731. Re-factored the code for checking spool and log partition space into a
2078 function that finds that data and another that does the check. The former
2079 is then used to implement four new variables: $spool_space, $log_space,
2080 $spool_inodes, and $log_inodes.
2081
14702f5b
PH
208232. The RFC2047 encoding function was originally intended for short strings
2083 such as real names; it was not keeping to the 75-character limit for
2084 encoded words that the RFC imposes. It now respects the limit, and
2085 generates multiple encoded words if necessary. To be on the safe side, I
2086 have increased the buffer size for the ${rfc2047: expansion operator from
2087 1024 to 2048 bytes.
2088
063b1e99
PH
208933. It is now permitted to omit both strings after an "if" condition; if the
2090 condition is true, the result is "true". As before, when the second string
2091 is omitted, a false condition yields an empty string. This makes it less
2092 cumbersome to write custom ACL and router conditions.
2093
652e1b65
PH
209434. Failure to deliver a bounce message always caused it to be frozen, even if
2095 there was an errors_to setting on the router. The errors_to setting is now
2096 respected.
2097
6f0c9a4f
PH
209835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2099 canonical form (fully expanded) before being placed in
2100 $sender_host_address.
2101
33397d19
PH
210236. The table in the code that translates DNS record types into text (T_A to
2103 "A" for instance) was missing entries for NS and CNAME. It is just possible
2104 that this could have caused confusion if both these types were looked up
2105 for the same domain, because the text type is used as part of Exim's
2106 per-process caching. But the chance of anyone hitting this buglet seems
2107 very small.
2108
7bb56e1f
PH
210937. The dnsdb lookup has been extended in a number of ways.
2110
2111 (1) There is a new type, "zns", which walks up the domain tree until it
2112 finds some nameserver records. It should be used with care.
2113
ea3bc19b
PH
2114 (2) There is a new type, "mxh", which is like "mx" except that it returns
2115 just the host names, not the priorities.
2116
2117 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2118 looked up. The behaviour when one of the lookups defers can be
2119 controlled by a keyword.
7bb56e1f 2120
ea3bc19b 2121 (4) It is now possible to specify the separator character for use when
7bb56e1f 2122 multiple records are returned.
33397d19 2123
0bcb2a0e
PH
212438. The dnslists ACL condition has been extended: it is now possible to supply
2125 a list of IP addresses and/or domains to be looked up in a particular DNS
2126 domain.
2127
2ac0e484
PH
212839. Added log_selector=+queue_time_overall.
2129
4e1fde53
PH
213040. When running the queue in the test harness, wait just a tad after forking a
2131 delivery process, to get repeatability of debugging output.
2132
de365ded
PH
213341. Include certificate and key file names in error message when GnuTLS fails
2134 to set them up, because the GnuTLS error message doesn't include the name
2135 of the failing file when there is a problem reading it.
2136
f05da2e8
PH
213742. Allow both -bf and -bF in the same test run.
2138
d6453af2
PH
213943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2140
f7b63901
PH
214144. The "Exiscan patch" is now merged into the mainline Exim source.
2142
214345. Sometimes the final signoff response after QUIT could fail to get
2144 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2145 < 0 before doing a fflush(). This bug looks as though it goes back to the
2146 introduction of TLS in release 3.20, but "sometimes" must have been rare
2147 because the tests only now provoked it.
2148
a444213a
PH
214946. Reset the locale to "C" after calling embedded Perl, in case it was changed
2150 (this can affect the format of dates).
2151
0ec020ea
PH
215247. exim_tidydb, when checking for the continued existence of a message for
2153 which it has found a message-specific retry record, was not finding
2154 messages that were in split spool directories. Consequently, it was
2155 deleting retry records that should have stayed in existence.
2156
b1206957
PH
215748. Steve fixed some bugs in eximstats.
2158
215949. The SPA authentication driver was not abandoning authentication and moving
2160 on to the next authenticator when an expansion was forced to fail,
2161 contradicting the general specification for all authenticators. Instead it
2162 was generating a temporary error. It now behaves as specified.
2163
26dd5a95
PH
216450. The default ordering of permitted cipher suites for GnuTLS was pessimal
2165 (the order specifies the preference for clients). The order is now AES256,
2166 AES128, 3DES, ARCFOUR128.
2167
343b2385
PH
216851. Small patch to Sieve code - explicitly set From: when generating an
2169 autoreply.
2170
1c5466b9
PH
217152. Exim crashed if a remote delivery caused a very long error message to be
2172 recorded - for instance if somebody sent an entire SpamAssassin report back
2173 as a large number of 550 error lines. This bug was coincidentally fixed by
2174 increasing the size of one of Exim's internal buffers (big_buffer) that
2175 happened as part of the Exiscan merge. However, to be on the safe side, I
2176 have made the code more robust (and fixed the comments that describe what
2177 is going on).
2178
55ee9ee3
PH
217953. Now that there can be additional text after "Completed" in log lines (if
2180 the queue_time_overall log selector is set), a one-byte patch to exigrep
2181 was needed to allow it to recognize "Completed" as not the last thing in
2182 the line.
2183
d38f8232
PH
218454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2185 patch that reportedly fixes this has been added. I am not expert enough to
2186 create a test for it. This is what the patch creator wrote:
2187
2188 "I found a little strange behaviour of ldap code when working with
2189 Windows 2003 AD Domain, where users was placed in more than one
2190 Organization Units. When I tried to give exim partial DN, the exit code
2191 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2192 But simultaneously result of request was absolutely normal ldap result,
2193 so I produce this patch..."
2194
3295e65b
PH
2195 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2196 REFERENCE, so I have modified the code to exclude the patch when that macro
2197 is not defined.
2198
7102e136
PH
219955. Some experimental protocols are using DNS PTR records for new purposes. The
2200 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2201 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2202 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2203 CAN-2005-0021
7102e136 2204
3ca0ba97
PH
220556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2206
c2bcbe20
PH
220757. Double the size of the debug message buffer (to 2048) so that more of very
2208 long debug lines gets shown.
2209
18ce445d
PH
221058. The exicyclog utility now does better if the number of log files to keep
2211 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2212
1f5b4c3d
PH
221359. Two changes related to the smtp_active_hostname option:
2214
2215 (1) $smtp_active_hostname is now available as a variable.
2216 (2) The default for smtp_banner uses $smtp_active_hostname instead
2217 of $primary_hostname.
2218
b975ba52
PH
221960. The host_aton() function is supposed to be passed a string that is known
2220 to be a valid IP address. However, in the case of IPv6 addresses, it was
2221 not checking this. This is a hostage to fortune. Exim now panics and dies
2222 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2223 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2224 components; fortuitously, this particular loophole had already been fixed
2225 by change 4.50/55 above.
2226
2227 If there are any other similar loopholes, the new check in host_aton()
2228 itself should stop them being exploited. The report I received stated that
2229 data on the command line could provoke the exploit when Exim was running as
2230 exim, but did not say which command line option was involved. All I could
2231 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2232 running as the user.
ea3a6f44 2233 CAN-2005-0021
85b87bc2
PH
2234
223561. There was a buffer overflow vulnerability in the SPA authentication code
2236 (which came originally from the Samba project). I have added a test to the
2237 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2238 CAN-2005-0022
b975ba52 2239
17ffcae7
PH
224062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2241 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2242
d95f9fdb
PH
224363. The daemon start-up calls getloadavg() while still root for those OS that
2244 need the first call to be done as root, but it missed one case: when
2245 deliver_queue_load_max is set with deliver_drop_privilege. This is
2246 necessary for the benefit of the queue runner, because there is no re-exec
2247 when deliver_drop_privilege is set.
2248
86b8287f
PH
224964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2250 This has been fixed.
2251
60dc5e56
PH
225265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2253 was in use, was not putting the data itself into the right store pool;
2254 consequently, it could be overwritten for a subsequent message in the same
2255 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2256 the caching.)
2257
533244af
PH
225866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2259
a5a28604
PH
226067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2261 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2262 the function were treating the return as a boolean value, which happened to
2263 work because 0=false and not-0=true, but is not correct code.
2264
7e634d24
PH
226568. The host_aton() function was not handling scoped IPv6 addresses (those
2266 with, for example, "%eth0" on the end) correctly.
2267
3e11c26b
PH
226869. Fixed some compiler warnings in acl.c for the bitmaps specified with
2269 negated items (that is, ~something) in unsigned ints. Some compilers
2270 apparently mutter when there is no cast.
2271
6729cf78
PH
227270. If an address verification called from an ACL failed, and did not produce a
2273 user-specific message (i.e. there was only a "system" message), nothing was
2274 put in $acl_verify_message. In this situation, it now puts the system
2275 message there.
2276
00f00ca5
PH
227771. Change 4.23/11 added synchronization checking at the start of an SMTP
2278 session; change 4.31/43 added the unwanted input to the log line - except
2279 that it did not do this in the start of session case. It now does.
2280
c9bdd01c
PH
228172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2282 This is wrong and can cause the other end to generate a synchronization
2283 error if it is another Exim or anything else that does the synchronization
2284 check. A QUIT command is no longer sent after a timeout.
2285
d43194df
PH
228673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2287 during host lookups.
2288
fe5b5d0b
PH
228974. The defer_ok option of callout verification was not working if it was used
2290 when verifying addresses in header lines, that is, for this case:
2291
2292 verify = header_sender/callout=defer_ok
2293
76a2d7ba
PH
229475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2295 those file descriptors could be used for SMTP connections. If anything
2296 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2297 could be sent to the SMTP client, causing chaos. The daemon now opens
2298 stdin, stdout, and stderr to /dev/null when it puts itself into the
2299 background.
2300
230176. Arrange for output from Perl's "warn" command to be written to Exim's main
2302 log by default. The user can override this with suitable Perl magic.
2303
04f7d5b9
PH
230477. The use of log_message on a "discard" ACL verb, which is supposed to add to
2305 the log message when discard triggers, was not working for the DATA ACL or
2306 for the non-SMTP ACL.
2307
bc60667e
PH
230878. Error message wording change in sieve.c.
2309
bb6e88ff
PH
231079. If smtp_accept_max_per_host was set, the number of connections could be
2311 restricted to fewer than expected, because the daemon was trying to set up
2312 a new connection before checking whether the processes handling previous
2313 connections had finished. The check for completed processes is now done
2314 earlier. On busy systems, this bug wouldn't be noticed because something
2315 else would have woken the daemon, and it would have reaped the completed
2316 process earlier.
2317
1e70f85b
PH
231880. If a message was submitted locally by a user whose login name contained one
2319 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2320 It caused a spool format error. I have fixed the spool reading code. A
2321 related problem was that the "from" clause in the Received: line became
2322 illegal because of the space(s). It is now covered by ${quote_local_part.
2323
232481. Included the latest eximstats from Steve (adds average sizes to HTML Top
2325 tables).
2326
4e01f9d6
PH
232782. Updated OS/Makefile-AIX as per message from Mike Meredith.
2328
1ee1cef2
PH
232983. Patch from Sieve maintainer to fix unterminated string problem in
2330 "vacation" handling.
2331
6e2b4ccc
PH
233284. Some minor changes to the Linux configuration files to help with other
2333 OS variants using glibc.
2334
8e669ac1
PH
233585. One more patch for Sieve to update vacation handling to latest spec.
2336
495ae4b0 2337
bbe902f0
PH
2338----------------------------------------------------
2339See the note above about the 4.44 and 4.50 releases.
2340----------------------------------------------------
2341
2342
2343Exim version 4.44
2344-----------------
2345
2346 1. Change 4.43/35 introduced a bug that caused file counts to be
2347 incorrectly computed when quota_filecount was set in an appendfile
2348 transport
2349
2350 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2351 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2352 place.
2353
2354 3. Give more explanation in the error message when the command for a transport
2355 filter fails to execute.
2356
2357 4. There are several places where Exim runs a non-Exim command in a
2358 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2359 was being done only for the command run by the queryprogram router. It is
2360 now done for all such subprocesses. The other cases are: ${run, transport
2361 filters, and the commands run by the lmtp and pipe transports.
2362
2363 5. Some older OS have a limit of 256 on the maximum number of file
2364 descriptors. Exim was using setrlimit() to set 1000 as a large value
2365 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2366 systems. I've change it so that if it can't get 1000, it tries for 256.
2367
2368 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2369 was an oversight, and furthermore, ever since the addition of extra
2370 controls (e.g. 4.43/32), the checks on when to allow different forms of
2371 "control" were broken. There should now be diagnostics for all cases when a
2372 control that does not make sense is encountered.
2373
2374 7. $recipients is now available in the predata ACL (oversight).
2375
2376 8. Tidy the search cache before the fork to do a delivery from a message
2377 received from the command line. Otherwise the child will trigger a lookup
2378 failure and thereby defer the delivery if it tries to use (for example) a
2379 cached ldap connection that the parent has called unbind on.
2380
2381 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2382 of $address_data from the recipient verification was clobbered by the
2383 sender verification.
2384
238510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2386 was its contents. (It was OK if the option was not defined at all.)
2387
238811. A "Completed" log line is now written for messages that are removed from
2389 the spool by the -Mrm option.
2390
239112. $host_address is now set to the target address during the checking of
2392 ignore_target_hosts.
2393
239413. When checking ignore_target_hosts for an ipliteral router, no host name was
2395 being passed; this would have caused $sender_host_name to have been used if
2396 matching the list had actually called for a host name (not very likely,
2397 since this list is usually IP addresses). A host name is now passed as
2398 "[x.x.x.x]".
2399
240014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2401 code that specifies a non-restarting handler (typically sigaction() in
2402 modern systems) in an attempt to fix a rare and obscure crash bug.
2403
240415. Narrowed the window for a race in the daemon that could cause it to ignore
2405 SIGCHLD signals. This is not a major problem, because they are used only to
2406 wake it up if nothing else does.
2407
240816. A malformed maildirsize file could cause Exim to calculate negative values
2409 for the mailbox size or file count. Odd effects could occur as a result.
2410 The maildirsize information is now recalculated if the size or filecount
2411 end up negative.
2412
241317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2414 support for a long time. Removed HAVE_SYS_VFS_H.
2415
ea3a6f44 241618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2417
241819. Allow an empty sender to be matched against a lookup in an address list.
2419 Previously the only cases considered were a regular expression, or an
2420 empty pattern.
2421
242220. Exim went into a mad DNS lookup loop when doing a callout where the
2423 host was specified on the transport, if the DNS lookup yielded more than
2424 one IP address.
2425
ea3a6f44
NM
242621. The RFC2047 encoding function was originally intended for short strings
2427 such as real names; it was not keeping to the 75-character limit for
2428 encoded words that the RFC imposes. It now respects the limit, and
2429 generates multiple encoded words if necessary. To be on the safe side, I
2430 have increased the buffer size for the ${rfc2047: expansion operator from
2431 1024 to 2048 bytes.
bbe902f0 2432
ea3a6f44
NM
243322. Failure to deliver a bounce message always caused it to be frozen, even if
2434 there was an errors_to setting on the router. The errors_to setting is now
2435 respected.
bbe902f0
PH
2436
243723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2438 canonical form (fully expanded) before being placed in
2439 $sender_host_address.
2440
244124. Updated eximstats to version 1.33
2442
ea3a6f44
NM
244325. Include certificate and key file names in error message when GnuTLS fails
2444 to set them up, because the GnuTLS error message doesn't include the name
2445 of the failing file when there is a problem reading it.
bbe902f0
PH
2446
244726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2448 As per change 25.
bbe902f0 2449
ea3a6f44
NM
245027. Reset the locale to "C" after calling embedded Perl, in case it was changed
2451 (this can affect the format of dates).
bbe902f0 2452
ea3a6f44
NM
245328. exim_tidydb, when checking for the continued existence of a message for
2454 which it has found a message-specific retry record, was not finding
2455 messages that were in split spool directories. Consequently, it was
2456 deleting retry records that should have stayed in existence.
bbe902f0
PH
2457
245829. eximstats updated to version 1.35
2459 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2460 1.35 - bugfix such that pie charts by volume are generated correctly
2461
ea3a6f44
NM
246230. The SPA authentication driver was not abandoning authentication and moving
2463 on to the next authenticator when an expansion was forced to fail,
2464 contradicting the general specification for all authenticators. Instead it
2465 was generating a temporary error. It now behaves as specified.
bbe902f0 2466
ea3a6f44
NM
246731. The default ordering of permitted cipher suites for GnuTLS was pessimal
2468 (the order specifies the preference for clients). The order is now AES256,
2469 AES128, 3DES, ARCFOUR128.
bbe902f0 2470
ea3a6f44
NM
247131. Small patch to Sieve code - explicitly set From: when generating an
2472 autoreply.
bbe902f0 2473
ea3a6f44
NM
247432. Exim crashed if a remote delivery caused a very long error message to be
2475 recorded - for instance if somebody sent an entire SpamAssassin report back
2476 as a large number of 550 error lines. This bug was coincidentally fixed by
2477 increasing the size of one of Exim's internal buffers (big_buffer) that
2478 happened as part of the Exiscan merge. However, to be on the safe side, I
2479 have made the code more robust (and fixed the comments that describe what
2480 is going on).
bbe902f0 2481
ea3a6f44
NM
248233. Some experimental protocols are using DNS PTR records for new purposes. The
2483 keys for these records are domain names, not reversed IP addresses. The
2484 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2485 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2486 CAN-2005-0021
2487
ea3a6f44
NM
248834. The host_aton() function is supposed to be passed a string that is known
2489 to be a valid IP address. However, in the case of IPv6 addresses, it was
2490 not checking this. This is a hostage to fortune. Exim now panics and dies
2491 if the condition is not met. A case was found where this could be provoked
2492 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2493 components; fortuitously, this particular loophole had already been fixed
2494 by change 4.50/55 or 4.44/33 above.
2495
2496 If there are any other similar loopholes, the new check in host_aton()
2497 itself should stop them being exploited. The report I received stated that
2498 data on the command line could provoke the exploit when Exim was running as
2499 exim, but did not say which command line option was involved. All I could
2500 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2501 running as the user.
bbe902f0
PH
2502 CAN-2005-0021
2503
ea3a6f44
NM
250435. There was a buffer overflow vulnerability in the SPA authentication code
2505 (which came originally from the Samba project). I have added a test to the
2506 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2507 CAN-2005-0022
2508
ea3a6f44
NM
250936. The daemon start-up calls getloadavg() while still root for those OS that
2510 need the first call to be done as root, but it missed one case: when
2511 deliver_queue_load_max is set with deliver_drop_privilege. This is
2512 necessary for the benefit of the queue runner, because there is no re-exec
2513 when deliver_drop_privilege is set.
bbe902f0 2514
ea3a6f44
NM
251537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2516 was in use, was not putting the data itself into the right store pool;
2517 consequently, it could be overwritten for a subsequent message in the same
2518 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2519 the caching.)
bbe902f0 2520
ea3a6f44
NM
252138. Sometimes the final signoff response after QUIT could fail to get
2522 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2523 < 0 before doing a fflush(). This bug looks as though it goes back to the
2524 introduction of TLS in release 3.20, but "sometimes" must have been rare
2525 because the tests only now provoked it.
bbe902f0
PH
2526
2527
495ae4b0
PH
2528Exim version 4.43
2529-----------------
2530
2531 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2532 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2533 Now it returns an integer. A number of calls were still expecting a T/F
2534 return. Fortuitously, in all cases, the tests worked in OK situations,
2535 which is the norm. However, things would have gone wrong on any write
2536 failures on the smtp file descriptor. This function is used when sending
2537 messages over SMTP and also when doing verify callouts.
2538
2539 2. When Exim is called to do synchronous delivery of a locally submitted
2540 message (the -odf or -odi options), it no longer closes stderr before doing
2541 the delivery.
2542
2543 3. Implemented the mua_wrapper option.
2544
2545 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2546
2547 5. Implemented the functions header_remove(), header_testname(),
2548 header_add_at_position(), and receive_remove_recipient(), and exported them
2549 to local_scan().
2550
2551 6. If an ACL "warn" statement specified the addition of headers, Exim already
2552 inserted X-ACL-Warn: at the start if there was no header name. However, it
2553 was not making this test for the second and subsequent header lines if
2554 there were newlines in the string. This meant that an invalid header could
2555 be inserted if Exim was badly configured.
2556
2557 7. Allow an ACL "warn" statement to add header lines at the start or after all
2558 the Received: headers, as well as at the end.
2559
2560 8. Added the rcpt_4xx retry error code.
2561
2562 9. Added postmaster_mailfrom=xxx to callout verification option.
2563
256410. Added mailfrom=xxxx to the callout verification option, for verify=
2565 header_sender only.
2566
256711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2568 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2569
257012. Inserted some casts to stop certain compilers warning when using pointer
2571 differences as field lengths or precisions in printf-type calls (mostly
2572 affecting debugging statements).
2573
257413. Added optional readline() support for -be (dynamically loaded).
2575
257614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2577 same clock tick as a message's arrival, so that its received time was the
2578 same as the "first fail" time on the retry record, and that message
2579 remained on the queue past the ultimate address timeout, every queue runner
2580 would try a delivery (because it was past the ultimate address timeout) but
2581 after another failure, the ultimate address timeout, which should have then
2582 bounced the address, did not kick in. This was a "< instead of <=" error;
2583 in most cases the first failure would have been in the next clock tick
2584 after the received time, and all would be well.
2585
258615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2587 being recognized when the domain list was tested by the match_domain
2588 condition in an expansion string.
2589
259016. Added the ${str2b64: operator.
2591
259217. Exim was always calling setrlimit() to set a large limit for the number of
2593 processes, without checking whether the existing limit was already
2594 adequate. (It did check for the limit on file descriptors.) Furthermore,
2595 errors from getrlimit() and setrlimit() were being ignored. Now they are
2596 logged to the main and panic logs, but Exim does carry on, to try to do its
2597 job under whatever limits there are.
2598
259918. Imported PCRE 5.0.
2600
260119. Trivial typo in log message " temporarily refused connection" (the leading
2602 space).
2603
260420. If the log selector return_path_on_delivery was set and an address was
2605 redirected to /dev/null, the delivery process crashed because it assumed
2606 that a return path would always be set for a "successful" delivery. In this
2607 case, the whole delivery is bypassed as an optimization, and therefore no
2608 return path is set.
2609
261021. Internal re-arrangement: the function for sending a challenge and reading
2611 a response while authentication was assuming a zero-terminated challenge
2612 string. It's now changed to take a pointer and a length, to allow for
2613 binary data in such strings.
2614
261522. Added the cyrus_sasl authenticator (code supplied by MBM).
2616
261723. Exim was not respecting finduser_retries when seeking the login of the
2618 uid under which it was called; it was always trying 10 times. (The default
2619 setting of finduser_retries is zero.) Also, it was sleeping after the final
2620 failure, which is pointless.
2621
262224. Implemented tls_on_connect_ports.
2623
262425. Implemented acl_smtp_predata.
2625
262626. If the domain in control=submission is set empty, Exim assumes that the
2627 authenticated id is a complete email address when it generates From: or
2628 Sender: header lines.
2629
263027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2631 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2632 chown and chgrp in /bin and hostname in /usr/bin.
2633
263428. Exim was keeping the "process log" file open after each use, just as it
2635 does for the main log. This opens the possibility of it remaining open for
2636 long periods when the USR1 signal hits a daemon. Occasional processlog
2637 errors were reported, that could have been caused by this. Anyway, it seems
2638 much more sensible not to leave this file open at all, so that is what now
2639 happens.
2640
264129. The long-running daemon process does not normally write to the log once it
2642 has entered its main loop, and it closes the log before doing so. This is
2643 so that log files can straightforwardly be renamed and moved. However,
2644 there are a couple of unusual error situations where the daemon does write
2645 log entries, and I had neglected to close the log afterwards.
2646
264730. The text of an SMTP error response that was received during a remote
2648 delivery was being truncated at 512 bytes. This is too short for some of
2649 the long messages that one sometimes sees. I've increased the limit to
2650 1024.
2651
265231. It is now possible to make retry rules that apply only when a message has a
2653 specific sender, in particular, an empty sender.
2654
265532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2656 it possible to be selective about when SMTP synchronization is enforced.
2657
265833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2659
266032. Implemented hosts_connection_nolog.
2661
266233. Added an ACL for QUIT.
2663
266434. Setting "delay_warning=" to disable warnings was not working; it gave a
2665 syntax error.
2666
266735. Added mailbox_size and mailbox_filecount to appendfile.
2668
266936. Added control = no_multiline_responses to ACLs.
2670
267137. There was a bug in the logic of the code that waits for the clock to tick
2672 in the case where the clock went backwards by a substantial amount such
2673 that the microsecond fraction of "now" was more than the microsecond
2674 fraction of "then" (but the whole seconds number was less).
2675
267638. Added support for the libradius Radius client library this is found on
2677 FreeBSD (previously only the radiusclient library was supported).
2678
2679
2680Exim version 4.42
2681-----------------
2682
2683 1. When certain lookups returned multiple values in the form name=value, the
2684 quoting of the values was not always being done properly. Specifically:
2685 (a) If the value started with a double quote, but contained no whitespace,
2686 it was not quoted.
2687 (b) If the value contained whitespace other than a space character (i.e.
2688 tabs or newlines or carriage returns) it was not quoted.
2689 This fix has been applied to the mysql and pgsql lookups by writing a
2690 separate quoting function and calling it from the lookup code. The fix
2691 should probably also be applied to nisplus, ibase and oracle lookups, but
2692 since I cannot test any of those, I have not disturbed their existing code.
2693
2694 2. A hit in the callout cache for a specific address caused a log line with no
2695 reason for rejecting RCPT. Now it says "Previous (cached) callout
2696 verification failure".
2697
2698 3. There was an off-by-one bug in the queryprogram router. An over-long
2699 return line was truncated at 256 instead of 255 characters, thereby
2700 overflowing its buffer with the terminating zero. As well as fixing this, I
2701 have increased the buffer size to 1024 (and made a note to document this).
2702
2703 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2704 when Exim is waiting for an SMTP response from a remote server, Exim
2705 restarts its select() call on the socket, thereby resetting its timeout.
2706 This is not a problem when such interrupts are rare. Somebody set up a cron
2707 job to run exiwhat every 2 minutes, which is less than the normal select()
2708 timeout (5 or 10 minutes). This meant that the select() timeout never
2709 kicked in because it was always reset. I have fixed this by comparing the
2710 time when an interrupt arrives with the time at the start of the first call
2711 to select(). If more time than the timeout has elapsed, the interrupt is
2712 treated as a timeout.
2713
2714 5. Some internal re-factoring in preparation for the addition of Sieve
2715 extensions (by MH). In particular, the "personal" test is moved to a
2716 separate function, and given an option for scanning Cc: and Bcc: (which is
2717 not set for Exim filters).
2718
2719 6. When Exim created an email address using the login of the caller as the
2720 local part (e.g. when creating a From: or Sender: header line), it was not
2721 quoting the local part when it contained special characters such as @.
2722
2723 7. Installed new OpenBSD configuration files.
2724
2725 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2726 try to make them clearer.
2727
2728 9. Callout options, other than the timeout value, were being ignored when
2729 verifying sender addresses in header lines. For example, when using
2730
2731 verify = header_sender/callout=no_cache
2732
2733 the cache was (incorrectly) being used.
2734
273510. Added a missing instance of ${EXE} to the exim_install script; this affects
2736 only the Cygwin environment.
2737
273811. When return_path_on_delivery was set as a log selector, if different remote
2739 addresses in the same message used different return paths and parallel
2740 remote delivery occurred, the wrong values would sometimes be logged.
2741 (Whenever a remote delivery process finished, the return path value from
2742 the most recently started remote delivery process was logged.)
2743
274412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2745 lines when AUTH and/or TLS are in use. This is the "received protocol"
2746 field. Exim used to use "asmtp" for authenticated SMTP, without any
2747 indication (in the protocol name) for TLS use. Now it follows the RFC and
2748 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2749 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2750 names appear in log lines as well as in Received: header lines.
2751
275213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2753 extensions, and comparison tests, and to fix some bugs.
2754
275514. Changes to the "personal" filter test:
2756
2757 (1) The test was buggy in that it was just doing the equivalent of
2758 "contains" tests on header lines. For example, if a user's address was
2759 anne@some.where, the "personal" test would incorrectly be true for
2760
2761 To: susanne@some.where
2762
2763 This test is now done by extracting each address from the header in turn,
2764 and checking the entire address. Other tests that are part of "personal"
2765 are now done using regular expressions (for example, to check local parts
2766 of addresses in From: header lines).
2767
2768 (2) The list of non-personal local parts in From: addresses has been
2769 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2770 taken from the Sieve specification recommendations.
2771
2772 (3) If the message contains any header line starting with "List-" it is
2773 treated as non-personal.
2774
2775 (4) The test for "circular" in the Subject: header line has been removed
2776 because it now seems ill-conceived.
2777
277815. Minor typos in src/EDITME comments corrected.
2779
278016. Installed latest exipick from John Jetmore.
2781
278217. If headers_add on a router specified a text string that was too long for
2783 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2784 of string_sprintf() is now avoided.
2785
278618. $message_body_size was not set (it was always zero) when running the DATA
2787 ACL and the local_scan() function.
2788
278919. For the "mail" command in an Exim filter, no default was being set for
2790 the once_repeat time, causing a random time value to be used if "once" was
2791 specified. (If the value happened to be <= 0, no repeat happened.) The
2792 default is now 0s, meaning "never repeat". The "vacation" command was OK
2793 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2794 (I found it when inspecting the code).
2795
279620. There is now an overall timeout for performing a callout verification. It
2797 defaults to 4 times the callout timeout, which applies to individual SMTP
2798 commands during the callout. The overall timeout applies when there is more
2799 than one host that can be tried. The timeout is checked before trying the
2800 next host. This prevents very long delays if there are a large number of
2801 hosts and all are timing out (e.g. when the network connections are timing
2802 out). The value of the overall timeout can be changed by specifying an
2803 additional sub-option for "callout", called "maxwait". For example:
2804
2805 verify = sender/callout=5s,maxwait=20s
2806
280721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2808 to the end before writing, but this should make it even safer).
2809
281022. Exim was forgetting that it had advertised PIPELINING for the second and
2811 subsequent messages on an SMTP connection. It was also not resetting its
2812 memory on STARTTLS and an internal HELO.
2813
281423. When Exim logs an SMTP synchronization error within a session, it now
2815 records whether PIPELINING has been advertised or not.
2816
281724. Added 3 instances of "(long int)" casts to time_t variables that were being
2818 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2819 rather than long int.
2820
282125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2822
282326. Added the never_mail option to autoreply.
2824
2825
2826Exim version 4.41
2827-----------------
2828
2829 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2830 crash if the getsockname() call failed; this can happen if a connection is
2831 closed very soon after it is established. The problem was simply in the
2832 order in which certain operations were done, causing Exim to try to write
2833 to the SMTP stream before it had set up the file descriptor. The bug has
2834 been fixed by making things happen in the correct order.
2835
2836
2837Exim version 4.40
2838-----------------
2839
2840 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2841 before the connection was closed, thus losing the rejection response.
2842
2843 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2844 some early Solaris releases, but causes trouble in current releases where
2845 socklen_t is defined.
2846
2847 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2848 always exist.
2849
2850 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2851 configured.
2852
2853 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2854 that releasing the top of it at the end releases what was used for sub-
2855 expansions (unless the block got too big). However, discard this block if
2856 the first thing is a variable or header, so that we can use its block when
2857 it is dynamic (useful for very large $message_headers, for example).
2858
2859 6. Lookups now cache *every* query, not just the most recent. A new, separate
2860 store pool is used for this. It can be recovered when all lookup caches are
2861 flushed. Lookups now release memory at the end of their result strings.
2862 This has involved some general refactoring of the lookup sources.
2863
2864 7. Some code has been added to the store_xxx() functions to reduce the amount
2865 of flapping under certain conditions.
2866
2867 8. log_incoming_interface used to affect only the <= reception log lines. Now
2868 it causes the local interface and port to be added to several more SMTP log
2869 lines, for example "SMTP connection from", and rejection lines.
2870
2871 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2872
287310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2874
287511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2876 could be overwritten at the end of the current message (or the start of a
2877 new message if it was set in a HELO ACL). The value is now preserved for
2878 the duration of the SMTP connection.
2879
288012. If a transport had a headers_rewrite setting, and a matching header line
2881 contained an unqualified address, that address was qualified, even if it
2882 did not match any rewriting rules. The underlying bug was that the values
2883 of the flags that permit the existence of unqualified sender and recipient
2884 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2885 non-local messages, and by -bnq for local messages) were not being
2886 preserved with the message after it was received.
2887
288813. When Exim was logging an SMTP synchronization error, it could sometimes log
2889 "next input=" as part of the text comprising the host identity instead of
2890 the correct text. The code was using the same buffer for two different
2891 strings. However, depending on which order the printing function evaluated
2892 its arguments, the bug did not always show up. Under Linux, for example, my
2893 test suite worked just fine.
2894
289514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2896 doesn't work with some older versions of Perl. It has been changed to "my",
2897 which in any case is probably the better facility to use.
2898
289915. A really picky compiler found some instances of statements for creating
2900 error messages that either had too many or two few arguments for the format
2901 string.
2902
290316. The size of the buffer for calls to the DNS resolver has been increased
2904 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2905 for addresses that have a lot of PTR records. This alleviates a problem; it
2906 does not fully solve it.
2907
290817. A dnsdb lookup for PTR records that receives more data than will fit in the
2909 buffer now truncates the list and logs the incident, which is the same
2910 action as happens when Exim is looking up a host name and its aliases.
2911 Previously in this situation something unpredictable would happen;
2912 sometimes it was "internal error: store_reset failed".
2913
291418. If a server dropped the connection unexpectedly when an Exim client was
2915 using GnuTLS and trying to read a response, the client delivery process
2916 crashed while trying to generate an error log message.
2917
291819. If a "warn" verb in an ACL added multiple headers to a message in a single
2919 string, for example:
2920
2921 warn message = H1: something\nH2: something
2922
2923 the text was added as a single header line from Exim's point of view
2924 though it ended up OK in the delivered message. However, searching for the
2925 second and subsequent header lines using $h_h2: did not work. This has been
2926 fixed. Similarly, if a system filter added multiple headers in this way,
2927 the routers could not see them.
2928
292920. Expanded the error message when iplsearch is called with an invalid key to
2930 suggest using net-iplsearch in a host list.
2931
293221. When running tests using -bh, any delays imposed by "delay" modifiers in
2933 ACLs are no longer actually imposed (and a message to that effect is
2934 output).
2935
293622. If a "gecos" field in a passwd entry contained escaped characters, in
2937 particular, if it contained a \" sequence, Exim got it wrong when building
2938 a From: or a Sender: header from that name. A second bug also caused
2939 incorrect handling when an unquoted " was present following a character
2940 that needed quoting.
2941
294223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2943 was not being matched caselessly.
2944
294524. Arranged for all hyphens in the exim.8 source to be escaped with
2946 backslashes.
2947
294825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2949 properly. Recipient callout cache records were still being keyed to include
2950 the sender, even when use_sender was set false. This led to far more
2951 callouts that were necessary. The sender is no longer included in the key
2952 when use_sender is false.
2953
295426. Added "control = submission" modifier to ACLs.
2955
295627. Added the ${base62d: operator to decode base 62 numbers.
2957
295828. dnsdb lookups can now access SRV records.
2959
296029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2961 the configuration file.
2962
296330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2964 (-v) mode. This makes the output for a verbose queue run more intelligible.
2965
296631. Added a use_postmaster feature to recipient callouts.
2967
296832. Added the $body_zerocount variable, containing the number of binary zero
2969 bytes in the message body.
2970
297133. The time of last modification of the "new" subdirectory is now used as the
2972 "mailbox time last read" when there is a quota error for a maildir
2973 delivery.
2974
297534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2976
297735. Added +ignore_unknown as a special item in host lists.
2978
297936. Code for decoding IPv6 addresses in host lists is now included, even if
2980 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2981 address was recognized as an IP address, but was then not correctly decoded
2982 into binary, causing unexpected and incorrect effects when compared with
2983 another IP address.
2984
2985
2986Exim version 4.34
2987-----------------
2988
2989 1. Very minor rewording of debugging text in manualroute to say "list of
2990 hosts" instead of "hostlist".
2991
2992 2. If verify=header_syntax was set, and a header line with an unqualified
2993 address (no domain) and a large number of spaces between the end of the
2994 name and the colon was received, the reception process suffered a buffer
2995 overflow, and (when I tested it) crashed. This was caused by some obsolete
2996 code that should have been removed. The fix is to remove it!
2997
2998 3. When running in the test harness, delay a bit after writing a bounce
2999 message to get a bit more predictability in the log output.
3000
3001 4. Added a call to search_tidyup() just before forking a reception process. In
3002 theory, someone could use a lookup in the expansion of smtp_accept_max_
3003 per_host which, without the tidyup, could leave open a database connection.
3004
3005 5. Added the variables $recipient_data and $sender_data which get set from a
3006 lookup success in an ACL "recipients" or "senders" condition, or a router
3007 "senders" option, similar to $domain_data and $local_part_data.
3008
3009 6. Moved the writing of debug_print from before to after the "senders" test
3010 for routers.
3011
3012 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3013 problems for message scanning, either using a data ACL, or using
3014 local_scan() because the Received: header was not generated till after they
3015 were called (in order to set the time as the time of reception completion).
3016 I have revised the way this works. The header is now generated after the
3017 body is received, but before the ACL or local_scan() are called. After they
3018 are run, the timestamp in the header is updated.
3019
3020
3021Exim version 4.33
3022-----------------
3023
3024 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3025 before starting a queue runner without re-exec. This happened only when
3026 deliver_drop_privilege was set or when the Exim user was set to root. The
3027 effect of the bug was that timeouts during subsequent deliveries caused
3028 crashes instead of being properly handled. The handler is now left at its
3029 default (and expected) setting.
3030
3031 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3032 message, again when deliver_drop_privilege is set or Exim is run as root.
3033 The bug described in (1) was not present in this case, but the tidying up
3034 of the other signals was missing. I have made the two cases consistent.
3035
3036 3. The ignore_target_hosts setting on a manualroute router was being ignored
3037 for hosts that were looked up using the /MX notation.
3038
3039 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3040 in domain lists.
3041
3042 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3043 operated on the sender address. After changing the $sender_address to <>
3044 for the sender address verify, Exim was re-instated it as the original
3045 (before rewriting) address, but remembering that it had rewritten it, so it
3046 wasn't rewriting it again. This bug also had the effect of breaking the
3047 sender address verification caching when the sender address was rewritten.
3048
3049 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3050 This has been changed so that if the ip literal address matches
3051 ignore_target_hosts, the router declines.
3052
3053 7. Added expansion conditions match_domain, match_address, and match_local_
3054 part (NOT match_host).
3055
3056 8. The placeholder for the Received: header didn't have a length field set.
3057
3058 9. Added code to Exim itself and to exim_lock to test for a specific race
3059 condition that could lead to file corruption when using MBX delivery. The
3060 issue is with the lockfile that is created in /tmp. If this file is removed
3061 after a process has opened it but before that process has acquired a lock,
3062 there is the potential for a second process to recreate the file and also
3063 acquire a lock. This could lead to two Exim processes writing to the file
3064 at the same time. The added code performs the same test as UW imapd; it
3065 checks after acquiring the lock that its file descriptor still refers to
3066 the same named file.
3067
306810. The buffer for building added header lines was of fixed size, 8192 bytes.
3069 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3070 when Exim is built.
3071
307211. Added the smtp_active_hostname option. If used, this will typically be made
3073 to depend on the incoming interface address. Because $interface_address is
3074 not set up until the daemon has forked a reception process, error responses
3075 that can happen earlier (such as "too many connections") no longer contain
3076 a host name.
3077
307812. If an expansion in a condition on a "warn" statement fails because a lookup
3079 defers, the "warn" statement is abandoned, and the next ACL statement is
3080 processed. Previously this caused the whole ACL to be aborted.
3081
308213. Added the iplsearch lookup type.
3083
308414. Added ident_timeout as a log selector.
3085
308615. Added tls_certificate_verified as a log selector.
3087
308816. Added a global option tls_require_ciphers (compare the smtp transport
3089 option of the same name). This controls incoming TLS connections.
3090
309117. I finally figured out how to make tls_require_ciphers do a similar thing
3092 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3093 before starting the TLS session.
3094
309518. Tabs are now shown as \t in -bP output.
3096
309719. If the log selector return_path_on_delivery was set, Exim crashed when
3098 bouncing a message because it had too many Received: header lines.
3099
310020. If two routers both had headers_remove settings, and the first one included
3101 a superfluous trailing colon, the final name in the first list and the
3102 first name in the second list were incorrectly joined into one item (with a
3103 colon in the middle).
3104
3105
3106Exim version 4.32
3107-----------------
3108
3109 1. Added -C and -D options to the exinext utility, mainly to make it easier
3110 to include in the automated testing, but these could be helpful when
3111 multiple configurations are in use.
3112
3113 2. The exinext utility was not formatting the output nicely when there was
3114 an alternate port involved in the retry record key, nor when there was a
3115 message id as well (for retries that were specific to a specific message
3116 and a specific host). It was also confused by IPv6 addresses, because of
3117 the additional colons they contain. I have fixed the IPv4 problem, and
3118 patched it up to do a reasonable job for IPv6.
3119
3120 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3121 delivery, the log line now contains "pipelined" if PIPELINING was used.
3122
3123 4. An SMTP transport process used to panic and die if the bind() call to set
3124 an explicit outgoing interface failed. This has been changed; it is now
3125 treated in the same way as a connect() failure.
3126
3127 5. A reference to $sender_host_name in the part of a conditional expansion
3128 that was being skipped was still causing a DNS lookup. This no longer
3129 occurs.
3130
3131 6. The def: expansion condition was not recognizing references to header lines
3132 that used bh_ and bheader_.
3133
3134 7. Added the _cache feature to named lists.
3135
3136 8. The code for checking quota_filecount in the appendfile transport was
3137 allowing one more file than it should have been.
3138
3139 9. For compatibility with Sendmail, the command line option
3140
3141 -prval:sval
3142
3143 is equivalent to
3144
3145 -oMr rval -oMs sval
3146
3147 and sets the incoming protocol and host name (for trusted callers). The
3148 host name and its colon can be omitted when only the protocol is to be set.
3149 Note the Exim already has two private options, -pd and -ps, that refer to
3150 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3151 "s", but I don't think that's a major issue.
3152
315310. A number of refactoring changes to the code, none of which should affect
3154 Exim's behaviour:
3155
3156 (a) The number of logging options was getting close to filling up the
3157 32-bit word that was used as a bit map. I have split them into two classes:
3158 those that are passed in the argument to log_write(), and those that are
3159 only ever tested independently outside of that function. These are now in
3160 separate 32-bit words, so there is plenty of room for expansion again.
3161 There is no change in the user interface or the logging behaviour.
3162
3163 (b) When building, for example, log lines, the code previously used a
3164 macro that called string_cat() twice, in order to add two strings. This is
3165 not really sufficiently general. Furthermore, there was one instance where
3166 it was actually wrong because one of the argument was used twice, and in
3167 one call a function was used. (As it happened, calling the function twice
3168 did not affect the overall behaviour.) The macro has been replaced by a
3169 function that can join an arbitrary number of extra strings onto a growing
3170 string.
3171
3172 (c) The code for expansion conditions now uses a table and a binary chop
3173 instead of a serial search (which was left over from when there were very
3174 few conditions). Also, it now recognizes conditions like "pam" even when
3175 the relevant support is not compiled in: a suitably worded error message is
3176 given if an attempt is made to use such a condition.
3177
317811. Added ${time_interval:xxxxx}.
3179
318012. A bug was causing one of the ddress fields not to be passed back correctly
3181 from remote delivery subprocesses. The field in question was not being
3182 subsequently used, so this caused to problems in practice.
3183
318413. Added new log selectors queue_time and deliver_time.
3185
318614. Might have fixed a bug in maildirsizefile handling that threw up
3187 "unexpected character" debug warnings, and recalculated the data
3188 unnecessarily. In any case, I expanded the warning message to give more
3189 information.
3190
319115. Added the message "Restricted characters in address" to the statements in
3192 the default ACL that block characters like @ and % in local parts.
3193
319416. Change 71 for release 4.31 proved to be much less benign that I imagined.
3195 Three changes have been made:
3196
3197 (a) There was a serious bug; a negative response to MAIL caused the whole
3198 recipient domain to be cached as invalid, thereby blocking all messages
3199 to all local parts at the same domain, from all senders. This bug has
3200 been fixed. The domain is no longer cached after a negative response to
3201 MAIL if the sender used is not empty.
3202
3203 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3204 been restored.
3205
3206 (c) A new callout option, "use_sender" has been added for people who want
3207 the modified behaviour.
3208
3209
3210Exim version 4.31
3211-----------------
3212
3213 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3214 Larry Rosenman.
3215
3216 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3217 indeed breaks things for older releases.
3218
3219 3. Added additional logging to the case where there is a problem reading data
3220 from a filter that is running in a subprocess using a pipe, in order to
3221 try to track down a specific problem.
3222
3223 4. Testing facility fudge: when running in the test harness and attempting
3224 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3225 getting "No route to host". Convert this to a timeout.
3226
3227 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3228 warning.
3229
3230 6. Some OS don't have socklen_t but use size_t instead. This affects the
3231 fifth argument of getsockopt() amongst other things. This is now
3232 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3233 can be set for individual OS. I have set it for SunOS5, OSF1, and
3234 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3235 some earlier ones do not.
3236
3237 7. Change 4.30/15 was not doing the test caselessly.
3238
3239 8. The standard form for an IPv6 address literal was being rejected by address
3240 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3241 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3242 this, as well as the form without the "IPv6" on the front (but only when
3243 address literals are enabled, of course).
3244
3245 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3246
324710. Exim crashed if a message with an empty sender address specified by -f
3248 encountered a router with an errors_to setting. This could be provoked only
3249 by a command such as
3250
3251 exim -f "" ...
3252
3253 where an empty string was supplied; "<>" did not hit this bug.
3254
325511. Installed PCRE release 4.5.
3256
325712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3258 remained set. It is now erased.
3259
326013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3261 times from message ids (which are base 36 rather than the normal 62).
3262
326314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3264 were being counted as actual protocol errors, and logged if the log
3265 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3266 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3267 and DATA following a set of rejected RCPTs do not count as protocol errors.
3268 In other words, Exim assumes they were pipelined, though this may not
3269 actually be the case. Of course, in all cases the client gets an
3270 appropriate error code.
3271
327215. If a lookup fails in an ACL condition, a message about the failure may
3273 be available; it is used if testing the ACL cannot continue, because most
3274 such messages specify what the cause of the deferral is. However, some
3275 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3276 that caused an old message to be retained and used if a later statement
3277 caused a defer, replacing the real cause of the deferral.
3278
327916. If an IP address had so many PTR records that the DNS lookup buffer
3280 was not large enough to hold them, Exim could crash while trying to process
3281 the truncated data. It now detects and logs this case.
3282
328317. Further to 4.21/58, another change has been made: if (and only if) the
3284 first line of a message (the first header line) ends with CRLF, a bare LF
3285 in a subsequent header line has a space inserted after it, so as not to
3286 terminate the header.
3287
328818. Refactoring: tidied an ugly bit of code in appendfile that copied data
3289 unnecessarily, used atoi() instead of strtol(), and didn't check the
3290 termination when getting file sizes from file names by regex.
3291
329219. Completely re-implemented the support for maildirsize files, in the light
3293 of a number of problems with the previous contributed implementation
3294 (4.30/29). In particular:
3295
3296 . If the quota is zero, the maildirsize file is maintained, but no quota is
3297 imposed.
3298
3299 . If the maildir directory does not exist, it is created before any attempt
3300 to write a maildirsize file.
3301
3302 . The quota value in the file is just a cache; if the quota is changed in
3303 the transport, the new value overrides.
3304
3305 . A regular expression is available for excluding directories from the
3306 count.
3307
330820. The autoreply transport checks the characters in options that define the
3309 message's headers; it allows continued headers, but it was checking with
3310 isspace() after an embedded newline instead of explicitly looking for a
3311 space or a tab.
3312
331321. If all the "regular" hosts to which an address was routed had passed their
3314 expiry times, and had not reached their retry times, the address was
3315 bounced, even if fallback hosts were defined. Now Exim should go on to try
3316 the fallback hosts.
3317
331822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3319 equivalent code in the SMTP transport. Some hosts send humungous responses
3320 to HELO/EHLO, more than 1024 it seems.
3321
332223. Refactoring: code in filter.c used (void *) for "any old type" but this
3323 gives compiler warnings in some environments. I've now done it "properly",
3324 using a union.
3325
332624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3327 (because of problems with the built-in one) was declared to return uschar *
3328 instead of char *, causing compiler failure.
3329
333025. Fixed a file descriptor leak when processing alias/forward files.
3331
333226. Fixed a minor format string issue in dbfn.c.
3333
333427. Typo in exim.c: ("dmbnz" for "dbmnz").
3335
333628. If a filter file refered to $h_xxx or $message_headers, and the headers
3337 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3338 become corrupted.
3339
334029. When a sender address is verified, it is cached, to save repeating the test
3341 when there is more than one recipient in a message. However, when the
3342 verification involves a callout, it is possible for different callout
3343 options to be set for different recipients. It is too complicated to keep
3344 track of this in the cache, so now Exim always runs a verification when a
3345 callout is required, relying on the callout cache for the optimization.
3346 The overhead is duplication of the address routing, but this should not be
3347 too great.
3348
334930. Fixed a bug in callout caching. If a RCPT command caused the sender address
3350 to be verified with callout=postmaster, and the main callout worked but the
3351 postmaster check failed, the verification correctly failed. However, if a
3352 subsequent RCPT command asked for sender verification *without* the
3353 postmaster check, incorrect caching caused this verification also to fail,
3354 incorrectly.
3355
335631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3357 it was not caching the DNS options (qualify_single, search_parents) that
3358 were used when the lookup failed. A subsequent lookup with different
3359 options therefore always gave the same answer, though there were cases
3360 where it should not have. (Example: a "domains = !$mx_any" option on a
3361 dnslookup router: the "domains" option is always processed without any
3362 widening, but the router might have qualify_single set.) Now Exim uses the
3363 cached value only when the same options are set.
3364
336532. Added John Jetmore's "exipick" utility to the distribution.
3366
336733. GnuTLS: When an attempt to start a TLS session fails for any reason other
3368 than a timeout (e.g. a certificate is required, and is not provided), an
3369 Exim server now closes the connection immediately. Previously it waited for
3370 the client to close - but if the client is SSL, it seems that they each
3371 wait for each other, leading to a delay before one of them times out.
3372
337334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3374 maintained 0.8.x compatibility because I don't think many are using it, and
3375 it is clearly obsolete.
3376
337735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3378 transport.
3379
338036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3381 client certificate was expired. A simple patch fixes this, though I don't
3382 understand the full logic of why the verify callback is called multiple
3383 times.
3384
338537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3386 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3387 which causes problems with some clients (such as the Certicom SSL Plus
3388 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3389 disables the coutermeasure allowing Eudora to connect."
3390
339138. Exim was not checking that a write() to a log file succeeded. This could
3392 lead to Bad Things if a log got too big, in particular if it hit a file
3393 size limit. Exim now panics and dies if it cannot write to a log file, just
3394 as it does if it cannot open a log file.
3395
339639. Modified OS/Makefile-Linux so that it now contains
3397
3398 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3399
3400 The two -D definitions ensure that Exim is compiled with large file
3401 support, which makes it possible to handle log files that are bigger than
3402 2^31.
3403
340440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3405 instance) a domain was checked against a named list that involved a lookup,
3406 causing $domain_data to be set, then another domain was checked against the
3407 same list, then the first domain was re-checked, the value of $domain_data
3408 after the final check could be wrong. In particular, if the second check
3409 failed, it could be set empty. This bug probably also applied to
3410 $localpart_data.
3411
341241. The strip_trailing_dot option was not being applied to the address given
3413 with the -f command-line option.
3414
341542. The code for reading a message's header from the spool was incrementing
3416 $received_count, but never initializing it. This meant that the value was
3417 incorrect (doubled) while delivering a message in the same process in which
3418 it was received. In the most common configuration of Exim, this never
3419 happens - a fresh exec is done - but it can happen when
3420 deliver_drop_privilege is set.
3421
342243. When Exim logs an SMTP synchronization error - client data sent too soon -
3423 it now includes up to 150 characters of the unexpected data in the log
3424 line.
3425
342644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3427 and building data strings. The size of both of these buffers was 10 000
3428 bytes - far larger than anybody would *ever* want, thought I. Needless to
3429 say, somebody hit the limit. I have increased the maximum line length to
3430 20 000 and the maximum data length of concatenated lines to 100 000. I have
3431 also fixed two bugs, because there was no checking on these buffers. Tsk,
3432 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3433 buffer is too small.
3434
343545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3436 lsearch lookups. Now it does.
3437
343846. When parsing a route_list item in a manualroute router, a fixed-length
3439 buffer was used for the list of hosts. I made this 1024 bytes long,
3440 thinking that nobody would ever have a list of hosts that long. Wrong.
3441 Somebody had a whole pile of complicated expansion conditions, and the
3442 string was silently truncated, leading to an expansion error. It turns out
3443 that it is easier to change to an unlimited length (owing to other changes
3444 that have happened since this code was originally written) than to build
3445 structure for giving a limitation error. The length of the item that
3446 expands into the list of hosts is now unlimited.
3447
344847. The lsearch lookup could not handle data where the length of text line was
3449 more than 4095 characters. Such lines were truncated, leading to shortened
3450 data being returned. It should now handle lines of any length.
3451
345248. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3453 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3454 ACL").
3455
345649. Cosmetic tidy to scripts like exicyclog that are generated by globally
3457 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3458 no longer happens in comment lines. A list of replacements is now placed
3459 at the head of all of the source files, except those whose only change is
3460 to replace PERL_COMMAND in the very first #! line.
3461
346250. Replaced the slow insertion sort in queue.c, for sorting the list of
3463 messages on the queue, with a bottom-up merge sort, using code contributed
3464 by Michael Haardt. This should make operations like -bp somewhat faster on
3465 large queues. It won't affect queue runners, except when queue_run_in_order
3466 is set.
3467
346851. Installed eximstats 1.31 in the distribution.
3469
347052. Added support for SRV lookups to the dnslookup router.
3471
347253. If an ACL referred to $message_body or $message_body_end, the value was not
3473 reset for any messages that followed in the same SMTP session.
3474
347554. The store-handling optimization for building very long strings was not
3476 differentiating between the different store pools. I don't think this
3477 actually made any difference in practice, but I've tidied it.
3478
347955. While running the routers to verify a sender address, $sender_address
3480 was still set to the sender address. This is wrong, because when routing to
3481 send a bounce to the sender, it would be empty. Therefore, I have changed
3482 it so that, while verifying a sender address, $sender_address is set to <>.
3483 (There is no change to what happens when verifying a recipient address.)
3484
348556. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3486 target A or AAAA records (if not already returned) without resetting the
3487 qualify_single or search_parents options of the DNS resolver. These are
3488 inappropriate in this case because the targets of MX and SRV records must
3489 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3490 target that, when qualified, matched something in the local domain. These
3491 two options are now turned off when doing these lookups.
3492
349357. It seems that at least some releases of Reiserfs (which does not have the
3494 concept of a fixed number of inodes) returns zero and not -1 for the
3495 number of available inodes. This interacted badly with check_spool_inodes,
3496 which assumed that -1 was the "no such thing" setting. What I have done is
3497 to check that the total number of inodes is greater than zero before doing
3498 the test of how many are available.
3499
350058. When a "warn" ACL statement has a log_message modifier, the message is
3501 remembered, and not repeated. This is to avoid a lot of repetition when a
3502 message has many recipients that cause the same warning to be written.
3503 Howewer, Exim was preserving the list of already written lines for an
3504 entire SMTP session, which doesn't seem right. The memory is now reset if a
3505 new message is started.
3506
350759. The "rewrite" debugging flag was not showing the result of rewriting in the
3508 debugging output unless log_rewrite was also set.
3509
351060. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3511 of (int)(handle) when we know that handle contains (void *)(-1).
3512
351361. The Exim daemon panic-logs an error return when it closes the incoming
3514 connection. However "connection reset by peer" seems to be common, and
3515 isn't really an error worthy of noting specially, so that particular error
3516 is no long logged.
3517
351862. When Exim is trying to find all the local interfaces, it used to panic and
3519 die if the ioctl to get the interface flags failed. However, it seems that
3520 on at least one OS (Solaris 9) it is possible to have an interface that is
3521 included in the list of interfaces, but for which you get a failure error
3522 for this call. This happens when the interface is not "plumbed" into a
3523 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3524 failure of the "get flags" call assumes that the interface is down.
3525
352663. Added a ${eval10: operator, which assumes all numbers are decimal. This
3527 makes life easier for people who are doing arithmetic on fields extracted
3528 from dates, where you often get leading zeros that should not be
3529 interpreted as octal.
3530
353164. Added qualify_domain to the redirect router, to override the global
3532 setting.
3533
353465. If a pathologically long header line contained very many addresses (the
3535 report of this problem mentioned 10 000) and each of them was rewritten,
3536 Exim could use up a very large amount of memory. (It kept on making new
3537 copies of the header line as it rewrote, and never released the old ones.)
3538 At the expense of a bit more processing, the header rewriting function has
3539 been changed so that it no longer eats memory in this way.
3540
354166. The generation of the Received: header has been moved from the time that a
3542 message starts to be received, to the time that it finishes. The timestamp
3543 in the Received: header should now be very close to that of the <= log
3544 line. There are two side-effects of this change:
3545
3546 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3547 logged header lines no longer include the local Received: line, because
3548 it has not yet been created. The same applies to a copy of the message
3549 that is returned to a non-SMTP sender when a message is rejected.
3550
3551 (b) When a filter file is tested using -bf, no additional Received: header
3552 is added to the test message. After some thought, I decided that this
3553 is a bug fix.
3554
3555 This change does not affect the value of $received_for. It is still set
3556 after address rewriting, but before local_scan() is called.
3557
355867. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3559
356068. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3561 gave an unhelpful panic error message, and a defer error. I have managed to
3562 change this behaviour so that it now rejects any supplied certificate,
3563 which seems right, as the list of acceptable certificates is empty.
3564
356569. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3566 gave an unhelpful defer error. I have not managed to make this reject any
3567 supplied certificates, but the error message it gives is "no certificate
3568 supplied", which is not helpful.
3569
357070. exigrep's output now also includes lines that are not associated with any
3571 message, but which match the given pattern. Implemented by a patch from
3572 Martin Sluka, which also tidied up the Perl a bit.
3573
357471. Recipient callout verification, like sender verification, was using <> in
3575 the MAIL FROM command. This isn't really the right thing, since the actual
3576 sender may affect whether the remote host accepts the recipient or not. I
3577 have changed it to use the actual sender in the callout; this means that
3578 the cache record is now keyed on a recipient/sender pair, not just the
3579 recipient address. There doesn't seem to be a real danger of callout loops,
3580 since a callout by the remote host to check the sender would use <>.
3581 [SEE ABOVE: changed after hitting problems.]
3582
358372. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3584 temporary errors. However, in the case of such a code being given after
3585 the end of a data transmission (i.e. after ".") Exim was failing to write
3586 a retry record for the message. (Yes, there was some broken host that was
3587 actually sending 8xx at this point.)
3588
358973. An unknown lookup type in a host list could cause Exim to panic-die when
3590 the list was checked. (An example that provoked this was putting <; in the
3591 middle of a list instead of at the start.) If this happened during a DATA
3592 ACL check, a -D file could be left lying around. This kind of configuration
3593 error no longer causes Exim to die; instead it causes a defer errror. The
3594 incident is still logged to the main and panic logs.
3595
359674. Buglet left over from Exim 3 conversion. The message "too many messages