Tidies to the test-suite infrastructure for compiling auxiliary
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
bbe15da8 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.458 2007/01/23 11:01:09 ph10 Exp $
495ae4b0
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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
b4ed4da0 44
5dd1517f
PH
45Exim version 4.66
46-----------------
47
48PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
49 fixed by 4.65/MH/01 (is this a record?) are fixed:
50
51 (i) An empty string was always treated as zero by the numeric comparison
52 operators. This behaviour has been restored.
53
54 (ii) It is documented that the numeric comparison operators always treat
55 their arguments as decimal numbers. This was broken in that numbers
56 starting with 0 were being interpreted as octal.
57
58 While fixing these problems I realized that there was another issue that
59 hadn't been noticed. Values of message_size_limit (both the global option
60 and the transport option) were treated as octal if they started with 0.
61 The documentation was vague. These values are now always treated as
62 decimal, and I will make that clear in the documentation.
63
64
93cfa765
TK
65Exim version 4.65
66-----------------
67
68TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
69 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
70 versions. (#438)
71
d6066548
MH
72MH/01 Don't check that the operands of numeric comparison operators are
73 integers when their expansion is in "skipping" mode (fixes bug
74 introduced by 4.64-PH/07).
75
4362ff0d
PH
76PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
77 child addresses, Exim now panics and dies. Previously, because the count
78 is held in a short int, deliveries were likely to be lost. As such a
79 large number of recipients for a single message is ridiculous
80 (performance will be very, very poor), I have chosen to impose a limit
81 rather than extend the field.
82
93cfa765 83
944e9e9c
TF
84Exim version 4.64
85-----------------
aa41d2de 86
21d74bd9
TK
87TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
88 leftover -K file (the existence of which was triggered by #402).
89 While we were at it, introduced process PID as part of the -K
90 filename. This should rule out race conditions when creating
91 these files.
92
93TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
94 processing considerably. Previous code took too long for large mails,
95 triggering a timeout which in turn triggers #401.
96
97TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
98 in the DK code in transports.c. sendfile() is not really portable,
99 hence the _LINUX specificness.
944e9e9c
TF
100
101TF/01 In the add_headers option to the mail command in an Exim filter,
102 there was a bug that Exim would claim a syntax error in any
103 header after the first one which had an odd number of characters
104 in the field name.
105
2b1c6e3a
PH
106PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
107 callout verification, Exim cached a "reject" for the entire domain. This
108 is correct for most verifications, but it is not correct for a recipient
109 verification with use_sender or use_postmaster set, because in that case
110 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
111 case of MAIL FROM:<> rejection from other early rejections (e.g.
112 rejection of HELO). When verifying a recipient using a non-null MAIL
113 address, the cache is ignored if it shows MAIL FROM:<> rejection.
114 Whatever the result of the callout, the value of the domain cache is
115 left unchanged (for any other kind of callout, getting as far as trying
116 RCPT means that the domain itself is ok).
117
1f872c80
PH
118PH/02 Tidied a number of unused variable and signed/unsigned warnings that
119 gcc 4.1.1 threw up.
120
121PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
122 manifest itself as EPIPE rather than ECONNECT. When tidying away a
123 session, the daemon ignores ECONNECT errors and logs others; it now
124 ignores EPIPE as well.
125
d203e649
PH
126PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
127 (quoted-printable decoding).
128
cc2ed8f7 129PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 130 later the small subsequent patch to fix an introduced bug.
f951fd57 131
ddfcd446
PH
132PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
133
d45b1de8
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134PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
135
136PH/08 An error is now given if message_size_limit is specified negative.
137
38a0a95f 138PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 139 to be given (somewhat) arbitrary names.
38a0a95f 140
a2405d83
JJ
141JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
142 in 4.64-PH/09.
143
144JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
145 miscellaneous code fixes
146
6ea85e9a
PH
147PH/10 Added the log_reject_target ACL modifier to specify where to log
148 rejections.
149
26da7e20
PH
150PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
151 hostname. This is wrong, because it relates to the incoming message (and
152 probably the interface on which it is arriving) and not to the outgoing
153 callout (which could be using a different interface). This has been
154 changed to use the value of the helo_data option from the smtp transport
155 instead - this is what is used when a message is actually being sent. If
156 there is no remote transport (possible with a router that sets up host
157 addresses), $smtp_active_hostname is used.
6ea85e9a 158
14aa5a05 159PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 160 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
161 (a) The code assumed that strncpy() returns a negative number on buffer
162 overflow, which isn't the case. Replaced with Exim's string_format()
163 function.
164 (b) There were several signed/unsigned issues. I just did the minimum
165 hacking in of casts. There is scope for a larger refactoring.
166 (c) The code used strcasecmp() which is not a standard C function.
167 Replaced with Exim's strcmpic() function.
168 (d) The code set only $1; it now sets $auth1 as well.
169 (e) A simple test gave the error "authentication client didn't specify
170 service in request". It would seem that Dovecot has changed its
171 interface. Fortunately there's a specification; I followed it and
172 changed what the client sends and it appears to be working now.
173
ff75a1f7
PH
174PH/13 Added $message_headers_raw to provide the headers without RFC 2047
175 decoding.
176
e6f6568e
PH
177PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
178 address A is aliased to B and C, where B exists and C does not. Without
179 -v the output is "A verified" because verification stops after a
180 successful redirection if more than one address is generated. However,
181 with -v the child addresses are also verified. Exim was outputting "A
182 failed to verify" and then showing the successful verification for C,
183 with its parentage. It now outputs "B failed to verify", showing B's
184 parentage before showing the successful verification of C.
185
d6f6e0dc
PH
186PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
187 look up a TXT record in a specific list after matching in a combined
188 list.
189
322050c2
PH
190PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
191 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
192 they consult the DNS. I had assumed they would set it the way they
193 wanted; and indeed my experiments on Linux seem to show that in some
194 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
195 To be on the safe side, however, I have now made the interface to
196 host_find_byname() similar to host_find_bydns(), with an argument
197 containing the DNS resolver options. The host_find_byname() function now
198 sets these options at its start, just as host_find_bydns() does. The smtp
199 transport options dns_qualify_single and dns_search_parents are passed to
200 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
201 of host_find_byname() use the default settings of RES_DEFNAMES
202 (qualify_single) but not RES_DNSRCH (search_parents).
203
08955dd3
PH
204PH/17 Applied (a modified version of) Nico Erfurth's patch to make
205 spool_read_header() do less string testing, by means of a preliminary
206 switch on the second character of optional "-foo" lines. (This is
207 overdue, caused by the large number of possibilities that now exist.
208 Originally there were few.) While I was there, I also converted the
209 str(n)cmp tests so they don't re-test the leading "-" and the first
210 character, in the hope this might squeeze out yet more improvement.
211
1eccaa59
PH
212PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
213 flag allowing group syntax was set by the header_syntax check but not
214 turned off, possible causing trouble later; (2) The flag was not being
215 set at all for the header_verify test, causing "group"-style headers to
216 be rejected. I have now set it in this case, and also caused header_
217 verify to ignore an empty address taken from a group. While doing this, I
218 came across some other cases where the code for allowing group syntax
219 while scanning a header line wasn't quite right (mostly, not resetting
220 the flag correctly in the right place). These bugs could have caused
221 trouble for malformed header lines. I hope it is now all correct.
222
602e59e5
PH
223PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
224 with the "reply" argument non-NULL. The code, however (which originally
225 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
226 but it didn't always do it. This confused somebody who was copying the
227 code for some other use. I have removed all the tests.
228
411ef850
PH
229PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
230 feature that was used to support insecure browsers during the U.S. crypto
231 embargo. It requires special client support, and Exim is probably the
232 only MTA that supported it -- and would never use it because real RSA is
233 always available. This code has been removed, because it had the bad
234 effect of slowing Exim down by computing (never used) parameters for the
235 RSA_EXPORT functionality.
236
7befa435
PH
237PH/21 On the advice of Timo Sirainen, added a check to the dovecot
238 authenticator to fail if there's a tab character in the incoming data
239 (there should never be unless someone is messing about, as it's supposed
240 to be base64-encoded). Also added, on Timo's advice, the "secured" option
241 if the connection is using TLS or if the remote IP is the same as the
242 local IP, and the "valid-client-cert option" if a client certificate has
243 been verified.
244
48da4259 245PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
246 authenticators. This can be used for authorization after authentication
247 succeeds. (In the case of plaintext, it servers for both authentication
248 and authorization.)
249
48da4259
PH
250PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
251 if any retry times were supplied.
252
d1d5595c
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253PH/24 Exim crashed if verify=helo was activated during an incoming -bs
254 connection, where there is no client IP address to check. In this
255 situation, the verify now always succeeds.
256
0ef732d9
PH
257PH/25 Applied John Jetmore's -Mset patch.
258
328895cc
PH
259PH/26 Added -bem to be like -Mset, but loading a message from a file.
260
fd700877
PH
261PH/27 In a string expansion for a processed (not raw) header when multiple
262 headers of the same name were present, leading whitespace was being
263 removed from all of them, but trailing whitespace was being removed only
264 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
265 before concatenation. Completely empty headers in a concatenation (as
266 before) are ignored.
fd700877 267
8dce1a6f
PH
268PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
269 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
270
17af4a17
PH
271PH/29 [Removed. This was a change that I later backed out, and forgot to
272 correct the ChangeLog entry (that I had efficiently created) before
273 committing the later change.]
f6c332bd
PH
274
275PH/30 Exim was sometimes attempting to deliver messages that had suffered
276 address errors (4xx response to RCPT) over the same connection as other
277 messages routed to the same hosts. Such deliveries are always "forced",
278 so retry times are not inspected. This resulted in far too many retries
279 for the affected addresses. The effect occurred only when there were more
280 hosts than the hosts_max_try setting in the smtp transport when it had
281 the 4xx errors. Those hosts that it had tried were not added to the list
282 of hosts for which the message was waiting, so if all were tried, there
283 was no problem. Two fixes have been applied:
284
285 (i) If there are any address or message errors in an SMTP delivery, none
286 of the hosts (tried or untried) are now added to the list of hosts
287 for which the message is waiting, so the message should not be a
288 candidate for sending over the same connection that was used for a
289 successful delivery of some other message. This seems entirely
290 reasonable: after all the message is NOT "waiting for some host".
291 This is so "obvious" that I'm not sure why it wasn't done
292 previously. Hope I haven't missed anything, but it can't do any
293 harm, as the worst effect is to miss an optimization.
294
295 (ii) If, despite (i), such a delivery is accidentally attempted, the
296 routing retry time is respected, so at least it doesn't keep
297 hammering the server.
298
c1114884
PH
299PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
300 in ${readsocket because some servers need this prod.
301
7a0743eb
PH
302PH/32 Added some extra debug output when updating a wait-xxx database.
303
0d85fa3f
PH
304PH/33 The hint "could be header name not terminated by colon", which has been
305 given for certain expansion errors for a long time, was not being given
306 for the ${if def:h_colon_omitted{... case.
307
1bf43b78
PH
308PH/34 The spec says: "With one important exception, whenever a domain list is
309 being scanned, $domain contains the subject domain." There was at least
310 one case where this was not true.
311
520de300
PH
312PH/35 The error "getsockname() failed: connection reset by peer" was being
313 written to the panic log as well as the main log, but it isn't really
314 panic-worthy as it just means the connection died rather early on. I have
315 removed the panic log writing for the ECONNRESET error when getsockname()
316 fails.
317
48c7f9e2
PH
318PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
319 runs only) independently of the message's sender address. This meant
320 that, if the 4xx error was in fact related to the sender, a different
321 message to the same recipient with a different sender could confuse
322 things. In particualar, this can happen when sending to a greylisting
323 server, but other circumstances could also provoke similar problems.
324 I have changed the default so that the retry time for these errors is now
325 based a combination of the sender and recipient addresses. This change
326 can be overridden by setting address_retry_include_sender=false in the
327 smtp transport.
328
99ea1c86
PH
329PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
330 remote server are returned as part of bounce messages. This was not
331 happening for LMTP over a pipe (the lmtp transport), but now it is the
332 same for both kinds of LMTP.
333
a2042e78
PH
334PH/38 Despite being documented as not happening, Exim was rewriting addresses
335 in header lines that were in fact CNAMEs. This is no longer the case.
336
4fbcfc2e
PH
337PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
338 and queue runs started by the daemon processed all messages. This has
339 been fixed so that -R and -S can now usefully be given with -q<time>.
340
aa41d2de
PH
341PH/40 Import PCRE release 6.7 (fixes some bugs).
342
af561417
PH
343PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
344
3cc66b45
PH
345PH/42 Give an error if -q is specified more than once.
346
194cc0e4
PH
347PH/43 Renamed the variables $interface_address and $interface_port as
348 $received_ip_address and $received_port, to make it clear that these
349 values apply to message reception, and not to the outgoing interface when
350 a message is delivered. (The old names remain recognized, of course.)
351
a401ddaa
PH
352PH/44 There was no timeout on the connect() call when using a Unix domain
353 socket in the ${readsocket expansion. There now is.
354
4e88a19f
PH
355PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
356 be meaningful with "accept".
357
d7d7b289
SC
358SC/01 Eximstats V1.43
359 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
360
361SC/02 Eximstats V1.44
362 Use a glob alias rather than an array ref in the generated
363 parser. This improves both readability and performance.
364
365SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
366 Collect SpamAssassin and rejection statistics.
367 Don't display local sender or destination tables unless
368 there is data to show.
369 Added average volumes into the top table text output.
370
371SC/04 Eximstats V1.46
372 Collect data on the number of addresses (recipients)
373 as well as the number of messages.
374
375SC/05 Eximstats V1.47
376 Added 'Message too big' to the list of mail rejection
377 reasons (thanks to Marco Gaiarin).
378
379SC/06 Eximstats V1.48
380 Mainlog lines which have GMT offsets and are too short to
381 have a flag are now skipped.
382
383SC/07 Eximstats V1.49 (Alain Williams)
384 Added the -emptyok flag.
385
386SC/08 Eximstats V1.50
387 Fixes for obtaining the IP address from reject messages.
388
0ea2a468
JJ
389JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
390 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
391 whitesspace changes from 4.64-PH/27
392
393JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
394 match 4.64-PH/13
395
396JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
397 are found, allow negative numbers in numeric criteria)
398
399JJ/06 exipick.20061117.2, added new $message_body_missing variable
400
401JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
402 to match changes made in 4.64-PH/43
403
8a10f5a4
PH
404PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
405
30e18802
PH
406PH/47 Put in an explicit test for a DNS lookup of an address record where the
407 "domain" is actually an IP address, and force a failure. This locks out
408 those revolvers/nameservers that support "A-for-A" lookups, in
409 contravention of the specifications.
410
55728a4f
PH
411PH/48 When a host name was looked up from an IP address, and the subsequent
412 forward lookup of the name timed out, the host name was left in
413 $sender_host_name, contrary to the specification.
d7d7b289 414
d7837193
PH
415PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
416 restricted to single-key lookups, Exim was not diagnosing an error if
417 * or *@ was used with a query-style lookup.
418
87054a31
PH
419PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
420
ea2c01d2
MH
421MH/01 local_scan ABI version incremented to 1.1. It should have been updated
422 long ago, but noone interested enough thought of it. Let's just say that
423 the "1.1" means that there are some new functions that weren't there at
424 some point in the past.
425
e4fa6968
PH
426PH/51 Error processing for expansion failure of helo_data from an smtp
427 transport during callout processing was broken.
428
56f5d9bd
PH
429PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
430 tested/used via the -bh/-bhc/-bs options.
431
922e1c28
PH
432PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
433 bug, fixed in subsequent PCRE releases).
434
21eb6e72
PH
435PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
436 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
437
a0540757
PH
438PH/55 Check for a ridiculously long file name in exim_dbmbuild.
439
944e9e9c 440
478be7b0
SC
441Exim version 4.63
442-----------------
443
444SC/01 Use a glob alias rather than an array ref in eximstats generated
445 parser. This improves both readability and performance.
446
447SC/02 Collect SpamAssassin and rejection statistics in eximstats.
448 Don't display local sender or destination tables in eximstats unless
449 there is data to show.
450 Added average volumes into the eximstats top table text output.
451
452SC/03 Collect data on the number of addresses (recipients) as well
453 as the number of messages in eximstats.
454
2b965a65
TF
455TF/01 Correct an error in the documentation for the redirect router. Exim
456 does (usually) call initgroups() when daemonizing.
478be7b0 457
45b91596
PH
458TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
459 with consistent privilege compared to when running as a daemon.
478be7b0 460
c59f5781
TF
461TF/03 Note in the spec that $authenticated_id is not set for local
462 submissions from trusted users.
463
90fc3069
TF
464TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
465 Thanks to Dean Brooks <dean@iglou.com> for the patch.
466
6083aca0
TF
467TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
468 by adding some example configuration directives to the default
469 configuration file. A little bit of work is required to uncomment the
470 directives and define how usernames and passwords are checked, but
471 there is now a framework to start from.
472
765b530f
PH
473PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
474 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
475 without this. I don't know how relevant this is to other LDAP libraries.
476
4e167a8c
PH
477PH/02 Add the verb name to the "unknown ACL verb" error.
478
4608d683
PH
479PH/03 Magnus Holmgren's patch for filter_prepend_home.
480
b8dc3e4a
PH
481PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
482
5418e93b
PH
483PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
484 directory not expanded when it should be if an expanded home directory
485 was set for the address (which is overridden by the transport).
486
b4a9bda2
PH
487PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
488 libradius.
489
45b91596
PH
490PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
491 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
492 because it is too late at that time, and has no effect.
493
5547e2c5
PH
494PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
495 security issue with \' (bugzilla #107). I could not use the
496 PQescapeStringConn() function, because it needs a PGconn value as one of
497 its arguments.
498
dbcef0ea
PH
499PH/08 When testing addresses using -bt, indicate those final addresses that
500 are duplicates that would not cause an additional delivery. At least one
501 person was confused, thinking that -bt output corresponded to deliveries.
502 (Suppressing duplicates isn't a good idea as you lose the information
503 about possibly different redirections that led to the duplicates.)
504
25257489
PH
505PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
506 systems where poll() doesn't work, in particular OS X.
507
c816d124
PH
508PH/10 Added more information to debugging output for retry time not reached.
509
a9ccd69a
PH
510PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
511 operations in malware.c.
512
75fa1910
PH
513PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
514 signatures.
515
a7d7aa58
PH
516PH/13 If write_rejectlog was set false when logging was sent to syslog with
517 syslog_duplication set false, log lines that would normally be written
518 both the the main log and to the reject log were not written to syslog at
519 all.
520
42119b09
PH
521PH/14 In the default configuration, change the use of "message" in ACL warn
522 statements to "add_header".
523
41609df5
PH
524PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
525 not followed by a command (e.g. "seen endif").
526
a5bd321b
PH
527PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
528 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
529 latter.
530
e85a7ad5 531PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
532 so that it is now:
533
e85a7ad5
PH
534 ${if or { \
535 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
536 { match{$h_precedence:}{(?i)bulk|list|junk} } \
537 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
538 }{no}{yes}}
539
e85a7ad5
PH
540 The Auto-Submitted: and various List- headers are standardised, whereas I
541 don't think Precedence: ever was.
5dff5817 542
d8fe1c03
PH
543PH/18 Refactored debugging code in route_finduser() to show more information,
544 in particular, the error code if getpwnam() issues one.
545
16282d2b
PH
546PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
547 This is apparently needed in addition to the PH/07 change above to avoid
548 any possible encoding problems.
549
35d40a98
PH
550PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
551 but not after initializing Perl.
552
034d99ab
PH
553PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
554 output them only if debugging. By default they are written stderr,
555 apparently, which is not desirable.
556
6ec97b1b
PH
557PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
558 queries.
559
e22ca4ac
JJ
560JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
561 --not options
562
563JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
564
33d73e3b
PH
565PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
566 authenticated or an ident call has been made. Suppress the default
567 values for $authenticated_id and $authenticated_sender (but permit -oMai
568 and -oMas) when testing with -bh.
569
9ecb03f3
PH
570PH/24 Re-jigged the order of the tests in the default configuration so that the
571 tests for valid domains and recipients precede the DNS black list and CSA
572 tests, on the grounds that those ones are more expensive.
573
084efe8d
PH
574PH/25 Exim was not testing for a space following SMTP commands such as EHLO
575 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
576 This bug exists in every version of Exim that I still have, right back to
577 0.12.
578
366fc9f0
PH
579PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
580 However, an attempt to turn on case-sensitivity in a regex key by
581 including (?-i) didn't work because the subject string was already
582 lowercased, and the effects were non-intuitive. It turns out that a
583 one-line patch can be used to allow (?-i) to work as expected.
584
c59f5781 585
c887c79e
TF
586Exim version 4.62
587-----------------
588
589TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
590 other effects) broke the use of negated acl sub-conditions.
591
1cce3af8
PH
592PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
593 patch).
594
afb3eaaf
PH
595PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
596 "Deny" causes Exim to reject the incoming connection with a 554 error.
597 Unfortunately, if there is a major crisis, such as a disk failure,
598 tcp-wrappers gives "deny", whereas what one would like would be some
599 kind of temporary error. A kludge has been added to help with this.
600 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
601 554 error is used if errno is still zero or contains ENOENT (which occurs
602 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
603 451 error is used.
604
e173618b
PH
605PH/03 Add -lutil to the default FreeBSD LIBS setting.
606
dd16e114
PH
607PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
608 errors. Otherwise a message that provokes a temporary error (when other
609 messages do not) can cause a whole host to time out.
610
f7fd3850
PH
611PH/05 Batch deliveries by appendfile and pipe transports did not work when the
612 addresses were routed directly to files or pipes from a redirect router.
613 File deliveries just didn't batch; pipe deliveries might have suffered
614 odd errors.
615
d87df92c
PH
616PH/06 A failure to get a lock for a hints database would erroneously always say
617 "Failed to get write lock", even when it was really a read lock.
618
7e9f683d
PH
619PH/07 The appendfile transport was creating MBX lock files with a fixed mode
620 of 0600. This has been changed to use the value of the lockfile_mode
621 option (which defaults to 0600).
622
bfad5236
PH
623PH/08 Applied small patch from the Sieve maintainer.
624
01c490df
PH
625PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
626 folder from quota calculations, a direct delivery into this folder messed
627 up the contents of the maildirsize file. This was because the regex was
628 used only to exclude .Trash (or whatever) when the size of the mailbox
629 was calculated. There was no check that a delivery was happening into an
630 excluded directory. This bug has been fixed by ignoring all quota
631 processing for deliveries into excluded directories.
632
d6629cdc
PH
633PH/10 Added the maildirfolder_create_regex option to appendfile.
634
1cce3af8 635
214e2000
PH
636Exim version 4.61
637-----------------
638
639PH/01 The code for finding all the local interface addresses on a FreeBSD
640 system running IPv6 was broken. This may well have applied to all BSD
641 systems, as well as to others that have similar system calls. The broken
642 code found IPv4 interfaces correctly, but gave incorrect values for the
643 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
644 that it would not match correctly against @[] and not recognize the IPv6
645 addresses as local.
646
f9daeae0
PH
647PH/02 The ipliteral router was not recognizing addresses of the form user@
648 [ipv6:....] because it didn't know about the "ipv6:" prefix.
649
7e66e54d
PH
650PH/03 Added disable_ipv6.
651
c8ea1597
PH
652PH/04 Changed $reply_address to use the raw form of the headers instead of the
653 decoded form, because it is most often used to construct To: headers
654 lines in autoreplies, and the decoded form may well be syntactically
655 invalid. However, $reply_address has leading white space removed, and all
656 newlines turned into spaces so that the autoreply transport does not
657 grumble.
658
911f6fde
PH
659PH/05 If group was specified without a user on a router, and no group or user
660 was specified on a transport, the group from the router was ignored.
661
47ca6d6c
PH
662PH/06 Increased the number of ACL variables to 20 of each type, and arranged
663 for visible compile-time settings that can be used to change these
664 numbers, for those that want even more. Backwards compatibility with old
665 spool files has been maintained. However, going back to a previous Exim
666 release will lost any variables that are in spool files.
667
ed0e9820
PH
668PH/07 Two small changes when running in the test harness: increase delay when
669 passing a TCP/IP connection to a new process, in case the original
670 process has to generate a bounce, and remove special handling of
671 127.0.0.2 (sic), which is no longer necessary.
672
eff37e47
PH
673PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
674 be the same on different OS.
675
1921d2ea
PH
676PH/09 Moved a debug statement in filter processing to avoid a race problem when
677 testing.
678
b3f69ca8
JJ
679JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
680 whether --show-vars was specified or not
681
682JJ/02 exipick: Added support for new ACL variable spool format introduced
683 in 4.61-PH/06
684
424a1c63
PH
685PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
686 syntactically invalid From: or Reply-to: line, and a filter used this to
687 generate an autoreply, and therefore failed to obtain an address for the
688 autoreply, Exim could try to deliver to a non-existent relative file
689 name, causing unrelated and misleading errors. What now happens is that
690 it logs this as a hard delivery error, but does not attempt to create a
691 bounce message.
692
7a100415
PH
693PH/11 The exinext utility has a -C option for testing purposes, but although
694 the given file was scanned by exinext itself; it wasn't being passed on
695 when Exim was called.
696
19b9dc85
PH
697PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
698 an end-of-file indication when reading a command response.
699
309bd837
PH
700PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
701 compiled. In many other places in Exim, IPv6 addresses are always
702 recognized, so I have changed this. It also means that IPv4 domain
703 literals of the form [IPV4:n.n.n.n] are now always recognized.
704
59e82a2a
PH
705PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
706 used if the router is not running as root, for example, when verifying at
707 ACL time, or when using -bh. The debugging output from this situation was
708 non-existent - all you got was a failure to exec. I have made two
709 changes:
710
711 (a) Failures to set uid/gid, the current directory, or a process leader
712 in a subprocess such as that created by queryprogram now generate
713 suitable debugging ouput when -d is set.
714
715 (b) The queryprogram router detects when it is not running as root,
716 outputs suitable debugging information if -d is set, and then runs
717 the subprocess without attempting to change uid/gid.
718
9edc04ce
PH
719PH/15 Minor change to Makefile for building test_host (undocumented testing
720 feature).
721
1349e1e5
PH
722PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
723 additional section of a DNS packet that returns MX or SRV records.
724 Instead, it always explicitly searches for A/AAAA records. This avoids
725 major problems that occur when a DNS server includes only records of one
726 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
727 fixed another bug: if SRV records were looked up and the corresponding
728 address records were *not* found in the additional section, the port
729 values from the SRV records were lost.
730
ea49d0e1
PH
731PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
732 using the correct key (the original address) when searching the retry
733 rules in order to find which one to use for generating the retry hint.
734
064a94c9
PH
735PH/18 If quota_warn_message contains a From: header, Exim now refrains from
736 adding the default one. Similarly, if it contains a Reply-To: header, the
737 errors_reply_to option, if set, is not used.
738
727071f8
PH
739PH/19 When calculating a retry time, Exim used to measure the "time since
740 failure" by looking at the "first failed" field in the retry record. Now
741 it does not use this if it is later than than the arrival time of the
742 message. Instead it uses the arrival time. This makes for better
743 behaviour in cases where some deliveries succeed, thus re-setting the
744 "first failed" field. An example is a quota failure for a huge message
745 when small messages continue to be delivered. Without this change, the
746 "time since failure" will always be short, possible causing more frequent
747 delivery attempts for the huge message than are intended.
dd16e114 748 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 749
f78eb7c6
PH
750PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
751 $1, $2, $3) because the numerical variables can be reset during some
752 expansion items (e.g. "match"), thereby losing the authentication data.
753
21c28500
PH
754PH/21 Make -bV show the size of off_t variables so that the test suite can
755 decide whether to run tests for quotas > 2G.
756
757PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
758 mailbox_size, and mailbox_filecount in the appendfile transport. If a
759 filecount value is greater than 2G or if a quota value is greater than 2G
760 on a system where the size of off_t is not greater than 4, a panic error
761 is given.
762
1688f43b
PH
763PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
764 never match. The debug and -bh output now contains an explicit error
765 message indicating a malformed IPv4 address or mask.
766
767PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
768 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
769 PH/23 above applies.
770
9675b384
PH
771PH/25 Do not write to syslog when running in the test harness. The only
772 occasion when this arises is a failure to open the main or panic logs
773 (for which there is an explicit test).
774
6a3f1455
PH
775PH/26 Added the /no_tell option to "control=freeze".
776
dac79d3e
PH
777PH/27 If a host name lookup failed very early in a connection, for example, if
778 the IP address matched host_lookup and the reverse lookup yielded a name
779 that did not have a forward lookup, an error message of the form "no IP
780 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
781 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 782
5977a0b3
PH
783PH/28 An enabling patch from MH: add new function child_open_exim2() which
784 allows the sender and the authenticated sender to be set when
785 submitting a message from within Exim. Since child_open_exim() is
786 documented for local_scan(), the new function should be too.
787
c91535f3
PH
788PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
789 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
790 results in an empty string is now treated as unset.
791
0d46a8c8
PH
792PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
793
278c6e6c
PH
794PH/31 Added sender_verify_fail logging option.
795
2cbb4081
PH
796PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
797 needed by RFC 822 but not by RFC 2822 was commented out. I have now
798 tidied the source and removed it altogether.
799
3eef829e
PH
800PH/33 When a queue run was abandoned because the load average was too high, a
801 log line was always written; now it is written only if the queue_run log
802 selector is set. In addition, the log line for abandonment now contains
803 information about the queue run such as the pid. This is always present
804 in "start" and "stop" lines but was omitted from the "abandon" line.
805
1ab95fa6
PH
806PH/34 Omit spaces between a header name and the colon in the error message that
807 is given when verify = headers_syntax fails (if there are lots of them,
808 the message gets confusing).
809
230205fc
PH
810PH/35 Change the default for dns_check_names_pattern to allow slashes within
811 names, as there are now some PTR records that contain slashes. This check
812 is only to protect against broken name servers that fall over on strange
813 characters, so the fact that it applies to all lookups doesn't matter.
814
75e0e026
PH
815PH/36 Now that the new test suite is complete, we can remove some of the
816 special code in Exim that was needed for the old test suite. For example,
817 sorting DNS records because real resolvers return them in an arbitrary
818 order. The new test suite's fake resolver always returns records in the
819 same order.
820
821PH/37 When running in the test harness, use -odi for submitted messages (e.g.
822 bounces) except when queue_only is set, to avoid logging races between
823 the different processes.
824
145396a6
PH
825PH/38 Panic-die if .include specifies a non-absolute path.
826
3cd34f13
PH
827PH/39 A tweak to the "H" retry rule from its user.
828
11121d3d
JJ
829JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
830 a label. They prevented compilation on older perls.
831
832JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
833 a warning to be raised on newish perls.
834
835JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
836 on queue. Changes to match documented behaviour of showing count of
837 messages matching specified criteria.
838
8def5aaf
PH
839PH/40 Changed the default ident timeout from 30s to 5s.
840
929ba01c
PH
841PH/41 Added support for the use of login_cap features, on those BSD systems
842 that have them, for controlling the resources used by pipe deliveries.
843
2632889e
PH
844PH/42 The content-scanning code uses fopen() to create files in which to put
845 message data. Previously it was not paying any attention to the mode of
846 the files. Exim runs with umask(0) because the rest of the code creates
847 files with open(), and sets the required mode explicitly. Thus, these
848 files were ending up world-writeable. This was not a big issue, because,
849 being within the spool directory, they were not world-accessible. I have
850 created a function called modefopen, which takes an additional mode
851 argument. It sets umask(777), creates the file, chmods it to the required
852 mode, then resets the umask. All the relevant calls to fopen() in the
853 content scanning code have been changed to use this function.
854
944a9c55
PH
855PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
856 to 24 hours. This avoids potential overflow problems when processing G
857 and H retry rules. I suspect nobody ever tinkers with this value.
858
4a23603b
PH
859PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
860
4730f942
PH
861PH/45 When the plaintext authenticator is running as a client, the server's
862 challenges are checked to ensure they are valid base64 strings. By
863 default, the authentication attempt is cancelled if an invalid string is
864 received. Setting client_ignore_invalid_base64 true ignores these errors.
865 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
866 they are received. Thus, the responses can be made to depend on the
867 challenges. If an invalid string is ignored, an empty string is placed in
868 the variable.
869
30dba1e6
PH
870PH/46 Messages that are created by the autoreply transport now contains a
871 References: header, in accordance with RFCs 2822 and 3834.
872
382afc6b
PH
873PH/47 Added authenticated_sender_force to the smtp transport.
874
a86229cf
PH
875PH/48 The ${prvs expansion was broken on systems where time_t was long long.
876
50c99ba6
PH
877PH/49 Installed latest patch from the Sieve maintainer.
878
d35e429d
PH
879PH/50 When an Exim quota was set without a file count quota, and mailbox_size
880 was also set, the appendfile transport was unnecessarily scanning a
881 directory of message files (e.g. for maildir delivery) to find the count
882 of files (along with the size), even though it did not need this
883 information. It now does the scan only if it needs to find either the
884 size of the count of files.
885
f90d018c
PH
886PH/51 Added ${time_eval: to convert Exim time strings into seconds.
887
75def545
PH
888PH/52 Two bugs concerned with error handling when the smtp transport is
889 used in LMTP mode:
890
891 (i) Exim was not creating retry information for temporary errors given
892 for individual recipients after the DATA command when the smtp transport
893 was used in LMTP mode. This meant that they could be retried too
894 frequently, and not timed out correctly.
895
896 (ii) Exim was setting the flag that allows error details to be returned
897 for LMTP errors on RCPT commands, but not for LMTP errors for individual
898 recipients that were returned after the DATA command.
899
900PH/53 This is related to PH/52, but is more general: for any failing address,
901 when detailed error information was permitted to be returned to the
902 sender, but the error was temporary, then after the final timeout, only
903 "retry timeout exceeded" was returned. Now it returns the full error as
904 well as "retry timeout exceeded".
905
c46782ef
PH
906PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
907 do this, and (what is worse) MTAs that accept it.
908
71fafd95
PH
909PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
910 will now be deprecated.
911
2c5db4fd
PH
912PH/56 New os.c-cygwin from the Cygwin maintainer.
913
9cf6b11a
JJ
914JJ/06 exipick: added --unsorted option to allow unsorted output in all output
915 formats (previously only available in exim formats via -bpr, -bpru,
916 and -bpra. Now also available in native and exiqgrep formats)
917
918JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
919 with very large, slow to parse queues
920
921JJ/08 exipick: added ! as generic prefix to negate any criteria format
922
923JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
924
898d150f
PH
925PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
926 responses to authentication challenges, though it was showing the
927 challenges; (ii) I've removed the CR characters from the debug output for
928 SMTP output lines.
929
46218253
PH
930PH/58 Allow for the insertion of a newline as well as a space when a string
931 is turned into more than one encoded-word during RFC 2047 encoding. The
932 Sieve code now uses this.
933
e97957bc
PH
934PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
935 data_4xx, lost_connection, tls_required.
936
81e509d7
PH
937PH/60 When a VRFY deferred or FAILED, the log message rather than the user
938 message was being sent as an SMTP response.
939
3d240ff7
PH
940PH/61 Add -l and -k options to exicyclog.
941
b37c4101
PH
942PH/62 When verifying, if an address was redirected to one new address, so that
943 verification continued, and the new address failed or deferred after
944 having set something in $address_data, the value of $address_data was not
945 passed back to the ACL. This was different to the case when no
946 redirection occurred. The value is now passed back in both cases.
947
79378e0f
PH
948PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
949 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
950 use login_cap.h, so on its own it isn't the distinguishing feature. The
951 new name refers directly to the setclassresources() function.
952
e49c7bb4
PH
953PH/65 Added configuration files for NetBSD3.
954
d114ec46
PH
955PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
956
f3d7df6c
PH
957PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
958 is preferred over IPv4.
959
715ab376
PH
960PH/68 The bounce_return_message and bounce_return_body options were not being
961 honoured for bounces generated during the reception of non-SMTP messages.
962 In particular, this applied to messages rejected by the ACL. This bug has
963 been fixed. However, if bounce_return_message is true and bounce_return_
964 body is false, the headers that are returned for a non-SMTP message
965 include only those that have been read before the error was detected.
966 (In the case of an ACL rejection, they have all been read.)
967
6b31b150
PH
968PH/69 The HTML version of the specification is now built in a directory called
969 spec_html instead of spec.html, because the latter looks like a path with
970 a MIME-type, and this confuses some software.
971
972PH/70 Catch two compiler warnings in sieve.c.
973
d515a917
PH
974PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
975 function verify_get_ident() calls ip_connect() to connect a socket, but
976 if the "connect()" function timed out, ip_connect() used to close the
977 socket. However, verify_get_ident() also closes the socket later, and in
978 between Exim writes to the log, which may get opened at this point. When
979 the socket was closed in ip_connect(), the log could get the same file
980 descriptor number as the socket. This naturally causes chaos. The fix is
981 not to close the socket in ip_connect(); the socket should be closed by
982 the function that creates it. There was only one place in the code where
983 this was missing, in the iplookup router, which I don't think anybody now
984 uses, but I've fixed it anyway.
985
9b8fadde
PH
986PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
987 well as to direct DNS lookups. Otherwise the handling of names in host
988 lists is inconsistent and therefore confusing.
989
214e2000 990
5de37277
PH
991Exim version 4.60
992-----------------
993
cc38ddbf
PH
994PH/01 Two changes to the default runtime configuration:
995
996 (1) Move the checks for relay_from_hosts and authenticated clients from
997 after to before the (commented out) DNS black list checks.
998
999 (2) Add control=submission to the relay_from_hosts and authenticated
1000 clients checks, on the grounds that messages accepted by these
1001 statements are most likely to be submissions.
5de37277 1002
72fdd6ae
PH
1003PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1004
1005 (1) Generate an error if the third argument for the ${prvs expansion is
1006 not a single digit.
1007
1008 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1009 string.
1010
1011 (3) Reset the variables that are obtained from the first argument of
1012 ${prvscheck and used in the second argument before leaving the code,
1013 because their memory is reclaimed, so using them afterwards may do
1014 silly things.
1015
1016 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1017 one (it's much easier than Tom thought :-).
1018
1019 (5) Because of (4), we can now allow for the use of $prvscheck_result
1020 inside the third argument.
cb9328de 1021
cb741023
PH
1022PH/03 For some reason, the default setting of PATH when running a command from
1023 a pipe transport was just "/usr/bin". I have changed it to
1024 "/bin:/usr/bin".
1025
f174f16e
PH
1026PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1027 anything to be listed in the output from -bV.
b2f5a032 1028
c25242d7
PH
1029PH/05 When a filter generated an autoreply, the entire To: header line was
1030 quoted in the delivery log line, like this:
1031
1032 => >A.N.Other <ano@some.domain> <original@ddress> ...
1033
1034 This has been changed so that it extracts the operative address. There
1035 may be more than one such address. If so, they are comma-separated, like
1036 this:
1037
1038 => >ano@some.domain,ona@other.domain <original@ddress> ...
1039
82c19f95
PH
1040PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1041 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1042 not being looked up in the rDNS to get a host name, Exim was showing the
1043 IP address twice in Received: lines, even though the IP addresses were
1044 identical. For example:
1045
1046 Received: from [1.2.3.4] (helo=[1.2.3.4])
1047
1048 However, if the real host name was known, it was omitting the HELO data
1049 if it matched the actual IP address. This has been tidied up so that it
1050 doesn't show the same IP address twice.
1051
d7ffbc12
PH
1052PH/07 When both +timestamp and +memory debugging was on, the value given by
1053 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1054 called by the debug printing, thereby overwriting the timestamp buffer.
1055 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1056
9f526266
PH
1057PH/08 When the original message was included in an autoreply transport, it
1058 always said "this is a copy of the message, including all the headers",
1059 even if body_only or headers_only was set. It now gives an appropriate
1060 message.
1061
87fcc8b9
PH
1062PH/09 Applied a patch from the Sieve maintainer which:
1063
1064 o fixes some comments
1065 o adds the (disabled) notify extension core
1066 o adds some debug output for the result of if/elsif tests
1067 o points to the current vacation draft in the documentation
1068 and documents the missing references header update
1069
1070 and most important:
1071
1072 o fixes a bug in processing the envelope test (when testing
1073 multiple envelope elements, the last element determinted the
1074 result)
1075
456682f5
PH
1076PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1077 Electronic Mail") by including:
1078
1079 Auto-submitted: auto-generated
1080
1081 in the messages that it generates (bounce messages and others, such as
1082 warnings). In the case of bounce messages for non-SMTP mesages, there was
1083 also a typo: it was using "Auto_submitted" (underscore instead of
1084 hyphen). Since every message generated by Exim is necessarily in response
1085 to another message, thes have all been changed to:
1086
1087 Auto-Submitted: auto-replied
1088
1089 in accordance with these statements in the RFC:
1090
1091 The auto-replied keyword:
1092
1093 - SHOULD be used on messages sent in direct response to another
1094 message by an automatic process,
1095
1096 - MUST NOT be used on manually-generated messages,
1097
1098 - MAY be used on Delivery Status Notifications (DSNs) and Message
1099 Disposition Notifications (MDNs),
1100
1101 - MUST NOT be used on messages generated by automatic or periodic
1102 processes, except for messages which are automatic responses to
1103 other messages.
1104
3e46c1aa
PH
1105PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1106 to the default Received: header definition.
456682f5 1107
49826d12
PH
1108PH/12 Added log selector acl_warn_skipped (default on).
1109
eba0c039
PH
1110PH/13 After a successful wildlsearch lookup, discard the values of numeric
1111 variables because (a) they are in the wrong storage pool and (b) even if
1112 they were copied, it wouldn't work properly because of the caching.
1113
a0d6ba8a
PH
1114PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1115 checking when decoding. Apparently there are clients that generate
1116 overlong encoded strings. Why am I not surprised?
1117
f0917727
PH
1118PH/15 If the first argument of "${if match_address" was not empty, but did not
1119 contain an "@" character, Exim crashed. Now it writes a panic log message
1120 and treats the condition as false.
1121
096fee00
PH
1122PH/16 In autoreply, treat an empty string for "once" the same as unset.
1123
024bd3c2
PH
1124PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1125 extension "envelope-auth". The code is finished and in agreement with
1126 other implementations, but there is no documentation so far and in fact,
1127 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1128 not changing the active code.
1129
1130 Print executed "if" and "elsif" statements when debugging is used. This
1131 helps a great deal to understand what a filter does.
1132
1133 Document more things not specified clearly in RFC3028. I had all this
1134 sorted out, when out of a sudden new issues came to my mind. Oops."
1135
df199fec
PH
1136PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1137 (Bugzilla #53).
1138
d27f1df3
PH
1139PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1140 canonical form (as documented). However, after a host name lookup from
1141 the IP address, check_host() was doing a simple string comparison with
1142 addresses acquired from the DNS when checking that the found name did
1143 have the original IP as one of its addresses. Since any found IPv6
1144 addresses are likely to be in abbreviated form, the comparison could
1145 fail. Luckily, there already exists a function for doing the comparison
1146 by converting both addresses to binary, so now that is used instead of
1147 the text comparison.
1148
96776534
PH
1149PH/20 There was another similar case to PH/19, when a complete host name was
1150 given in a host list; looking up its IP address could give an abbreviated
1151 form, whereas the current host's name might or might not be abbreviated.
1152 The same fix has been applied.
1153
5de37277 1154
9a799bc0
PH
1155Exim version 4.54
1156-----------------
1157
1158PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1159 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1160 It now does.
1161
99a4b039
PH
1162PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1163 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1164
1165PH/03 Typo: missing ".o" in src/pcre/Makefile.
1166
4b233853
PH
1167PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1168 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1169 Also, for "Auto-Submitted", treat anything other than "no" as
1170 non-personal, in accordance with RFC 3834. (Previously it treated
1171 anything starting "auto-" as non-personal.)
1172
8857ccfd
PH
1173TF/01 The control=submission/name=... option had a problem with syntax
1174 errors if the name included a slash character. The /name= option
1175 now slurps the rest of the string, so it can include any characters
1176 but it must come last in the list of options (after /sender_retain
1177 or /domain=).
1178
433a2980
PH
1179PH/05 Some modifications to the interface to the fake nameserver for the new
1180 testing suite.
1181
3e46c1aa 1182
9a799bc0 1183
e3a311ba
TK
1184Exim version 4.53
1185-----------------
1186
1187TK/01 Added the "success_on_redirect" address verification option. See
1188 NewStuff for rationale and an example.
1189
13b685f9
PH
1190PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1191
395ff96d
PH
1192PH/02 Patch to exigrep to allow it to work on syslog lines.
1193
5b68f6e4
PH
1194PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1195 fread() to skip over the body file's header line, because in Cygwin the
1196 header line is locked and is inaccessible.
1197
1ab52c69
PH
1198PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1199 co-exist for some time) to make it clear that it is the Exim ID that is
1200 referenced, not the Message-ID: header line.
1201
b07e6aa3
PH
1202PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1203 string_format() function, because snprintf() does not exist on all
1204 operating systems.
1205
254e032f
PH
1206PH/06 The use of forbid_filter_existstest now also locks out the use of the
1207 ${stat: expansion item.
1208
3af76a81
PH
1209PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1210 protocol synchronization error", to keep the pedants happy.
1211
2548ba04
PH
1212PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1213 well as for IRIX systems, when gcc is being used. See the host.c source
1214 file for comments.
1215
b6c6011d
PH
1216PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1217
cf39cf57
PH
1218PH/10 Named domain lists were not working if used in a queue_smtp_domains
1219 setting.
1220
f1513293
PH
1221PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1222 transport and to the smtp transport in LMTP mode.
1223
727549a4
PH
1224TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1225
af46795e
PH
1226PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1227 run a filter in a subprocess. This could lead to confusion in subsequent
1228 lookups in the parent process. There should also be a search_tidyup() at
1229 the end of the subprocess.
1230
d7b47fd0
PH
1231PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1232 only if the host matched helo_try_verify_hosts, which caused the
1233 verification to occur when the EHLO/HELO command was issued. The ACL just
1234 tested the remembered result. Now, if a previous verification attempt has
1235 not happened, "verify = helo" does it there and then.
1236
ee744174
JJ
1237JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1238
b582ab87
PH
1239TK/03 Fix log output including CR from clamd.
1240
41a13e0a
PH
1241PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1242 exist provoked a memory error which could cause a segfault.
1243
f625cc5a
PH
1244PH/15 Installed PCRE 6.2
1245
1246PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1247
21f7af35
PH
1248PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1249 of the problem. Specifically, suggested +O2 rather than +O1 for the
1250 HP-UX compiler.
1251
31480e42
PH
1252PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1253
2d280592
PH
1254PH/20 If a delivery was routed to a non-standard port by means of an SRV
1255 record, the port was not correctly logged when the outgoing_port log
1256 selector was set (it logged the transort's default port).
1257
7cd1141b
PH
1258PH/21 Added support for host-specific ports to manualroute, queryprogram,
1259 fallback_hosts, and "hosts" in the smtp transport.
1260
1261PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1262 host errors such as "Connection refused".
1263
750af86e
PH
1264PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1265 authentication with radiusclient 0.4.9:
1266
1267 - Error returned from rc_read_config was caught wrongly
1268 - Username/password not passed on to radius server due to wrong length.
1269
1270 The presumption is that some radiusclient API changes for 4.51/PH/17
1271 were not taken care of correctly. The code is still untested by me (my
1272 Linux distribution still has 0.3.2 of radiusclient), but it was
1273 contributed by a Radius user.
1274
1275PH/24 When doing a callout, the value of $domain wasn't set correctly when
1276 expanding the "port" option of the smtp transport.
1277
4304270b
TK
1278TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1279 while reading a MIME header. Thanks to Tom Hughes for a patch.
1280
750af86e
PH
1281PH/24 Include config.h inside local_scan.h so that configuration settings are
1282 available.
1283
64ffc24f
PH
1284PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1285 that in an ACL for RCPT (for example), you can examine exactly what was
1286 received.
1287
5dd9625b
PH
1288PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1289 commands, but it was not correctly comparing the address with the actual
1290 client host address. Thus, it would show the EHLO address in Received:
1291 header lines when this was not necessary.
1292
5591031b
PH
1293PH/27 Added the % operator to ${eval:}.
1294
ba18e66a
PH
1295PH/28 Exim tries to create and chdir to its spool directory when it starts;
1296 it should be ignoring failures (because with -C, for example, it has lost
1297 privilege). It wasn't ignoring creation failures other than "already
1298 exists".
1299
9cec981f
PH
1300PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1301 -bV or -d is used.
1302
aa2b5c79
PH
1303PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1304 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1305 too many continuations, the temporary file was not being removed, and the
1306 return code was incorrect.
aa2b5c79 1307
48a53b7f
PH
1308PH/31 Missing "BOOL" in function definition in filtertest.c.
1309
1c59d63b
PH
1310PH/32 Applied Sieve patches from the maintainer.
1311
671012da
TK
1312TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1313
1509d3a8
PH
1314PH/33 Added "verify = not_blind".
1315
1316PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1317 Local/Makefile (with some defaults set). These are used in built scripts
1318 such as exicyclog, but they have never been used in the exim_install
1319 script (though there are many overriding facilities there). I have
1320 arranged that the exim_install script now takes note of these two
1321 settings.
1322
1323PH/35 Installed configuration files for Dragonfly.
1324
2fe1a124
PH
1325PH/36 When a locally submitted message by a trusted user did not contain a
1326 From: header, and the sender address was obtained from -f or from an SMTP
1327 MAIL command, and the trusted user did not use -F to supply a sender
1328 name, $originator_name was incorrectly used when constructing a From:
1329 header. Furthermore, $originator_name was used for submission mode
1330 messages from external hosts without From: headers in a similar way,
1331 which is clearly wrong.
1332
8800895a
PH
1333PH/37 Added control=suppress_local_fixups.
1334
ccfdb010
PH
1335PH/38 When log_selector = +received_sender was set, and the addition of the
1336 sender made the log line's construction buffer exactly full, or one byte
1337 less than full, an overflow happened when the terminating "\n" was
1338 subsequently added.
1339
1130bfb0
PH
1340PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1341 when the result of a list match is failure because a DNS lookup failed.
1342
ebcb507f
PH
1343PH/40 RM_COMMAND is now used in the building process.
1344
c35e155c
PH
1345PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1346 the "build-* directories that it finds.
1347
95d1f782
PH
1348PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1349 address in a domain literal was a prefix of an interface address.
1350
fd6de02e
PH
1351PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1352 when verifying a sender address, unless rewrite_headers is false.
1353
58de37c5
PH
1354PH/44 Wrote a long comment about why errors_to addresses are verified as
1355 recipients, not senders.
1356
261cf466
TF
1357TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1358 the ratelimit ACL was added.
1359
3ee512ff
PH
1360PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1361
e08c430f
PH
1362PH/46 Added extra information about PostgreSQL errors to the error string.
1363
bef5a11f
PH
1364PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1365 avoiding the need to install special zones in a real server. This is
1366 backwards compatible; if it can't find the fake resolver, it drops back.
1367 Thus, both old and new test suites can be run.
1368
7546de58
TF
1369TF/02 Added util/ratelimit.pl
1370
e5d5a95f
TF
1371TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1372 clock is set back in time.
1373
2e88a017
TF
1374TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1375 Candler <B.Candler@pobox.com>.
1376
a5f65aa4
TF
1377TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1378 OK for addresses that are the result of redirections.
1379
e7726cbf
PH
1380PH/48 A number of further additions for the benefit of the new test suite,
1381 including a fake gethostbyname() that interfaces to the fake DNS resolver
1382 (see PH/47 above).
1383
a7fdad5b
TF
1384TF/06 The fix for widen_domains has also been applied to qualify_single and
1385 search_parents which are the other dnslookup options that can cause
1386 header rewrites.
1387
6af56900
PH
1388PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1389 type ("H").
1390
0925ede6
PH
1391PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1392
66afa403
TF
1393TF/07 Exim produced the error message "an SRV record indicated no SMTP
1394 service" if it encountered an MX record with an empty target hostname.
1395 The message is now "an MX or SRV record indicated no SMTP service".
1396
0154e85a
TF
1397TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1398 if the DNS of the sending site is misconfigured. This is quite a
1399 common situation. This change restores the behaviour of treating a
1400 helo verification defer as a failure.
1401
16f12c76
PH
1402PH/51 If self=fail was set on a router, the bounce message did not include the
1403 actual error message.
1404
bbe902f0 1405
e5a9dba6
PH
1406Exim version 4.52
1407-----------------
1408
1409TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1410
22c3b60b
PH
1411PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1412 command itself ended in error, the underlying message about the transport
1413 filter timeout was being overwritten with the pipe command error. Now the
1414 underlying error message should be appended to the second error message.
1415
06a9b4b5
PH
1416TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1417
c1ac6996
PH
1418PH/02 Reduce the amount of output that "make" produces by default. Full output
1419 can still be requested.
1420
9c7a242c
PH
1421PH/03 The warning log line about a condition test deferring for a "warn" verb
1422 was being output only once per connection, rather than after each
1423 occurrence (because it was using the same function as for successful
1424 "warn" verbs). This seems wrong, so I have changed it.
1425
87ba3f5f
PH
1426TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1427 it should not have, which might have caused a crash in the right
1428 circumstances, but probably never did.
1429
1430PH/04 Installed a modified version of Tony Finch's patch to make submission
1431 mode fix the return path as well as the Sender: header line, and to
1432 add a /name= option so that you can make the user's friendly name appear
1433 in the header line.
1434
29aba418
TF
1435TF/03 Added the control = fakedefer ACL modifier.
1436
fe0dab11
TF
1437TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1438 Mark Lowes for thorough testing.
870f6ba8 1439
11d337a4
TK
1440TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1441
1442TK/03 Merged latest SRS patch from Miles Wilton.
1443
415c8f3b
PH
1444PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1445 with the definition in sysexits.h (which is #included earlier).
1446 Fortunately, Exim does not actually use EX_OK. The code used to try to
1447 preserve the sysexits.h value, by assumimg that macro definitions were
1448 scanned for macro replacements. I have been disabused of this notion,
1449 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1450
958541e9
PH
1451PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1452 in the smtp transport. When a block could not be written in a single
1453 write() function, the timeout was being re-applied to each part-write.
1454 This seems wrong - if the receiver was accepting one byte at a time it
1455 would take for ever. The timeout is now adjusted when this happens. It
1456 doesn't have to be particularly precise.
1457
c206415f
TK
1458TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1459 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1460
2a4be8f9
PH
1461PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1462 without a domain if the check to <postmaster@domain> fails.
1463
1cba11c5
SC
1464SC/01 Eximstats: added -xls and the ability to specify output files
1465 (patch written by Frank Heydlauf).
1466
1467SC/02 Eximstats: use FileHandles for outputing results.
1468
1469SC/03 Eximstats: allow any combination of xls, txt, and html output.
1470
1471SC/04 Eximstats: fixed display of large numbers with -nvr option
1472
1473SC/05 Eximstats: fixed merging of reports with empty tables.
1474
1475SC/06 Eximstats: added the -include_original_destination flag
1476
1477SC/07 Eximstats: removed tabs and trailing whitespace.
1478
1005d00e
TK
1479TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1480
1481TK/06 MBOX spool code: Add real "From " MBOX separator line
1482 so the .eml file is really in mbox format (even though
1483 most programs do not really care). Patch from Alex Miller.
1484
1485TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1486 The latter is generated from $received_to and is only set if the
1487 message has one envelope recipient. SA can use these headers,
1488 obviously out-of-the-box. Patch from Alex Miller.
1489
9b4768fa
PH
1490PH/08 The ${def test on a variable was returning false if the variable's
1491 value was "0", contrary to what the specification has always said!
1492 The result should be true unless the variable is empty.
1493
1494PH/09 The syntax error of a character other than { following "${if
1495 def:variable_name" (after optional whitespace) was not being diagnosed.
1496 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1497 accidental colon was present, for example, could give incorrect results.
1498
0d7eb84a
PH
1499PH/10 Tidied the code in a number of places where the st_size field of a stat()
1500 result is used (not including appendfile, where other changes are about
1501 to be made).
1502
1503PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1504 This involved changing a lot of size variables from int to off_t. It
1505 should work with maildirs and everything.
1506
40727bee
TK
1507TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1508 spamd dying while we are connected to it.
1509
554d2369
TF
1510TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1511 <jgh@wizmail.org>
1512
1f922db1
PH
1513PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1514 function for BDB 4.3.
1515
ef213c3b
PH
1516PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1517
8ac170f3
PH
1518PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1519 the sources for PCRE have been re-arranged and more files are now
1520 involved.
1521
b1c749bb
PH
1522PH/15 The code I had for printing potentially long long variables in PH/11
1523 above was not the best (it lost precision). The length of off_t variables
1524 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1525 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1526 to be "long long int" or "long int". This is needed for the internal
1527 formatting function string_vformat().
b1c749bb 1528
4aac9b49
PH
1529PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1530 the configuration file to be ":syslog", then the script "guesses" where
1531 the logs files are, rather than using the compiled in default. In our
1532 case the guess is not the same as the compiled default, so the script
1533 suddenly stopped working when I started to use syslog. The patch checks
1534 to see if log_file_path is "". If so, it attempts to read it from exim
1535 with no configuration file to get the compiled in version, before it
1536 falls back to the previous guessing code."
1537
294520c8
TK
1538TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1539 implementing BATV in an Exim configuration. See NewStuff for the gory
1540 details.
1541
5bd022fe
PH
1542PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1543 Makefile that are specific to HP-UX.
1544
90e9ce59
PH
1545PH/18 If the "use_postmaster" option was set for a recipient callout together
1546 with the "random" option, the postmaster address was used as the MAIL
1547 FROM address for the random test, but not for the subsequent recipient
1548 test. It is now used for both.
1549
5ea81592
PH
1550PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1551 patch removes a few documentation additions to RFC 3028, because the
1552 latest draft now contains them. It adds the new en;ascii-case comparator
1553 and a new error check for 8bit text in MIME parts. Comparator and
1554 require names are now matched exactly. I enabled the subaddress
1555 extension, but it is not well tested yet (read: it works for me)."
1556
c6c2dc1d
PH
1557PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1558 rework some of the code of TK/09 above to avoid the hardwired use of
1559 "%lld" and "long long". Replaced the call to snprintf() with a call to
1560 string_vformat().
1561
fffffe4c
PH
1562PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1563 records point to non-existent hosts", "retry timeout exceeded", and
1564 "retry time not reached for any host after a long failure period".
ca02eafb 1565
9a26b6b2
PH
1566PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1567 experimental DomainKeys support:
1568
1569 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1570 (2) On an error such as an illegally used "control", the wrong name for
1571 the control was given.
1572
1573 These problems did NOT occur unless DomainKeys support was compiled.
1574
4aee0225
PH
1575PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1576
32d668a5
PH
1577PH/24 Added ${if match_ip condition.
1578
8187c3f3
PH
1579PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1580 databases so that it will be absolutely obvious if a crash occurs in the
1581 DB library. This is a regular occurrence (often caused by mis-matched
1582 db.h files).
1583
ff790e47 1584PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1585 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1586 picked up on a user's system that detects such things. There doesn't seem
1587 to be a gcc warning option for this - only an attribute that has to be
1588 put on the function's prototype. It seems that in Fedora Core 4 they have
1589 set this on a number of new functions. No doubt there will be more in due
1590 course.
ff790e47 1591
5417f6d1
PH
1592PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1593 specify a transport. However, if an address that was verified by such a
1594 router was the subject of a callout, Exim crashed because it tried to
1595 read the rcpt_include_affixes from the non-existent transport. Now it
1596 just assumes that the setting of that option is false. This bug was
1597 introduced by 4.51/PH/31.
1598
59cf8544
PH
1599PH/28 Changed -d+all to exclude +memory, because that information is very
1600 rarely of interest, but it makes the output a lot bigger. People tend to
1601 do -d+all out of habit.
1602
e7ad8a65
PH
1603PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1604 code in os-type was giving problems when libc.so lives in lib64, like on
1605 x86_64 Fedora Core.
1606
ade42478
PH
1607PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1608 aren't the modern standard, and it seems that some systems' include files
1609 don't always have them. Exim was already checking for some of the newer
1610 ones like T_AAAA, and defining it itself. I've added checks for all the
1611 record types that Exim uses.
1612
182ad5cf
PH
1613PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1614 not automatically generating a new one, as it is supposed to. This
1615 prevented TLS from working. If the file did exist, but contained invalid
1616 data, a new version was generated, as expected. It was only the case of a
1617 non-existent file that was broken.
1618
b0d9fc80
TK
1619TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1620 with a change in libdomainkeys > 0.64.
1621
1622TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1623 from DNS. If the selector record carries the flag, it now has
1624 precedence over the domain-wide flag.
1625
1626TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1627
47c7a64a
PH
1628PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1629 the use of a port name that isn't defined in /etc/services) occurred, the
1630 message was deferred as in a normal delivery, and thus remained on the
1631 spool, instead of being failed because of the mua_wrapper setting. This
1632 is now fixed, and I tidied up some of the mua_wrapper messages at the
1633 same time.
1634
a388bce4
SC
1635SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1636 the messages in a hash of arrays rather than using individual hashes.
1637 This is a bit cleaner and results in dramatic memory savings, albeit
1638 at a slight CPU cost.
1639
1640SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1641 as requested by Marc Sherman.
1642
1643SC/10 Eximstats: added histograms for user specified patterns as requested
1644 by Marc Sherman.
1645
0793e4ed
SC
1646SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1647
c58b88df
PH
1648PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1649 fopen() in the content-scanning modules that did not already have it.
1650
e7ad8a65 1651
7982096b
PH
1652Exim version 4.51
1653-----------------
1654
1a46a8c5
PH
1655TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1656 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1657
2f079f46 1658TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1659
1660TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1661
1662PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1663 to test Sieve filters that use "vacation".
1664
1665PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1666 that changes the way the GnuTLS parameters are stored in the cache file.
1667 The new format can be generated externally. For backward compatibility,
1668 if the data in the cache doesn't make sense, Exim assumes it has read an
1669 old-format file, and it generates new data and writes a new file. This
1670 means that you can't go back to an older release without removing the
1671 file.
1672
1673PH/03 A redirect router that has both "unseen" and "one_time" set does not
1674 work if there are any delivery delays because "one_time" forces the
1675 parent to be marked "delivered", so its unseen clone is never tried
1676 again. For this reason, Exim now forbids the simultaneous setting of
1677 these two options.
1678
1679PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1680 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1681 entry if you want to know the details. The fix, however, neglected to
1682 consider the case when local delivery batching is involved. The test for
1683 "previously delivered" was not happening when checking to see if an
1684 address could be batched with a previous (undelivered) one; under
1685 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1686 address.
1a46a8c5
PH
1687
1688PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1689 in its include files, and this causes problems building Exim.
1690
1691PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1692 header_syntax) but Exim was just ignoring anything given after a slash.
1693 In particular, this caused confusion with an attempt to use "verify =
1694 reverse_host_lookup/defer_ok". An error is now given when options are
1695 supplied for verify items that do not have them. (Maybe reverse_host_
1696 lookup should have a defer_ok option, but that's a different point.)
1697
1698PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1699 defined by RFC 821) to 2048, because there were problems with some AUTH
1700 commands, and RFC 1869 says the size should be increased for extended
1701 SMTP commands that take arguments.
1702
1703PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1704 Finch).
1705
1706PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1707 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1708
49c2d5ea
PH
1709PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1710 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1711 whatever). Otherwise the password may appear in the log. Following change
1712 PH/42 below, there is no longer a chance of it appearing in a bounce
1713 message.
49c2d5ea 1714
bf759a8b
PH
1715PH/11 Installed exipick version 20050225.0 from John Jetmore.
1716
83364d30
PH
1717PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1718 of its addresses was ever tried. (Bugzilla bug #2.)
1719
7999bbd7
PH
1720PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1721 the result incorrectly in the debug output. (It correctly added a newline
1722 to what was transported.)
1723
7dbf77c9
PH
1724TF/01 Added $received_time.
1725
74e0617f
PH
1726PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1727 commented out examples of how to interface to a virus scanner and to
1728 SpamAssassin. Also added commented examples of av_scanner and
1729 spamd_address settings.
1730
2f079f46
PH
1731PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1732 and controls are allowed in which ACLs. There were a couple of minor
1733 errors. Some of the entries in the conditions table (which is a table of
1734 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1735 negation of where the condition IS allowed.
1736
8c841523
PH
1737PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1738
7766a4f0
PH
1739PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1740 header file does not have a version number, so I've had to invent a new
1741 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1742 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1743 radiusclient), but it was contributed by a Radius user.
1744
8b417f2c
PH
1745PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1746 files or directories, for OpenSSL.
1747
901f42cb
PH
1748PH/19 When an Exim process that is running as root has to create an Exim log
1749 file, it does so in a subprocess that runs as exim:exim so as to get the
1750 ownership right at creation (otherwise, other Exim processes might see
1751 the file with the wrong ownership). There was no test for failure of this
1752 fork() call, which would lead to the process getting stuck as it waited
1753 for a non-existent subprocess. Forks do occasionally fail when resources
1754 run out. I reviewed all the other calls to fork(); they all seem to check
1755 for failure.
1756
f9b9210e
PH
1757PH/20 When checking for unexpected SMTP input at connect time (before writing
1758 the banner), Exim was not dealing correctly with a non-positive return
1759 from the read() function. If the client had disconnected by this time,
1760 the result was a log entry for a synchronization error with an empty
1761 string after "input=" when read() returned zero. If read() returned -1
1762 (an event I could not check), uninitialized data bytes were printed.
1763 There were reports of junk text (parts of files, etc) appearing after
1764 "input=".
1765
54cdb463
PH
1766PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1767
cf00dad6
PH
1768PH/22 Added support for macro redefinition, and (re)definition in between
1769 driver and ACL definitions.
1770
acb1b346
PH
1771PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1772 forgetting to use the resulting value; it was using the unexpanded value.
1773
c5ddb310
PH
1774PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1775 hadn't been configured. The fix is from Juergen Kreileder, who
1776 understands it better than I do:
1777
1778 "Here's what I see happening with three configured cyrus_sasl
1779 authenticators configured (plain, login, cram-md5):
1780
1781 On startup auth_cyrus_sasl_init() gets called for each of these.
1782 This means three calls to sasl_listmech() without a specified mech_list.
1783 => SASL tests which mechs of all available mechs actually work
1784 => three warnings about OTP not working
1785 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1786
1787 With the patch, sasl_listmech() also gets called three times. But now
1788 SASL's mech_list option is set to the server_mech specified in the the
1789 authenticator. Or in other words, the answer from sasl_listmech()
1790 gets limited to just the mech you're testing for (which is different
1791 for each call.)
1792 => the return list contains just 'plain' or 'login', 'cram-md5' or
1793 nothing depending on the value of ob->server_mech.
1794
1795 I've just tested the patch: Authentication still works fine,
1796 unavailable mechs specified in the exim configuration are still
1797 caught, and the auth.log warnings about OTP are gone."
1798
31619da6
PH
1799PH/25 When debugging is enabled, the contents of the command line are added
1800 to the debugging output, even when log_selector=+arguments is not
1801 specified.
1802
bebaf0fc
PH
1803PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1804 answer is "GNU", and only if the return is "GNU/something" is the answer
1805 "Linux".
1806
475fe28a
PH
1807PH/27 $acl_verify_message is now set immediately after the failure of a
1808 verification in an ACL, and so is available in subsequent modifiers. In
1809 particular, the message can be preserved by coding like this:
1810
1811 warn !verify = sender
1812 set acl_m0 = $acl_verify_message
1813
1814 Previously, $acl_verify_message was set only while expanding "message"
1815 and "log_message" when a very denied access.
1816
7e8bec7a
PH
1817PH/28 Modified OS/os.c-Linux with
1818
1819 -#ifndef OS_LOAD_AVERAGE
1820 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1821
1822 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1823 nomenclature these days.)
1824
e4a89c47
PH
1825PH/29 Installed patch from the Sieve maintainer that adds the options
1826 sieve_useraddress and sieve_subaddress to the redirect router.
1827
5ca2a9a1
PH
1828PH/30 In these circumstances:
1829 . Two addresses routed to the same list of hosts;
1830 . First host does not offer TLS;
1831 . First host accepts first address;
1832 . First host gives temporary error to second address;
1833 . Second host offers TLS and a TLS session is established;
1834 . Second host accepts second address.
1835 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1836 and peerdn, if requested) that were in fact used only for the second
1837 address.
7e8bec7a 1838
c688b954
PH
1839PH/31 When doing a callout as part of verifying an address, Exim was not paying
1840 attention to any local part prefix or suffix that was matched by the
1841 router that accepted the address. It now behaves in the same way as it
1842 does for delivery: the affixes are removed from the local part unless
1843 rcpt_include_affixes is set on the transport.
1844
fed77020
PH
1845PH/32 Add the sender address, as F=<...>, to the log line when logging a
1846 timeout during the DATA phase of an incoming message.
1847
7fe1560f
PH
1848PH/33 Sieve envelope tests were broken for match types other than :is. I have
1849 applied a patch sanctioned by the Sieve maintainer.
c688b954 1850
ebb6e6d5
PH
1851PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1852 the uid or gid is negative. A case of a negative gid caused this to be
1853 noticed. The fix allows for either to be negative.
1854
9c4e8f60
PH
1855PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1856 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1857 overlooked.
1858
1859PH/36 The change PH/12 above was broken. Fixed it.
1860
d7174846
PH
1861PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1862 the grounds that routing the same address twice would always produce the
1863 same answer. This might have been true once, but it is certainly no
1864 longer true now. Routing a child address may depend on the previous
1865 routing that produced that child. Some complicated redirection strategies
1866 went wrong when messages had multiple recipients, and made Exim's
1867 behaviour dependent on the order in which the addresses were given.
1868
1869 I have moved the duplicate checking until after the routing is complete.
1870 Exim scans the addresses that are assigned to local and remote
1871 transports, and removes any duplicates. This means that more work will be
1872 done, as duplicates will always all be routed, but duplicates are
1873 presumably rare, so I don't expect this is of any significance.
1874
1875 For deliveries to pipes, files, and autoreplies, the duplicate checking
1876 still happens during the routing process, since they are not going to be
1877 routed further.
1878
cfe75fc3
PH
1879PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1880 It corrects a timeout issue with spamd. This is Ian's comment: "The
1881 background is that sometimes spamd either never reads data from a
1882 connection it has accepted, or it never writes response data. The exiscan
1883 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1884 blindly assumes that writes won't block so it may never time out."
1885
be22d70e
PH
1886PH/39 Allow G after quota size as well as K and M.
1887
0612b098
PH
1888PH/40 The value set for $authenticated_id in an authenticator may not contain
1889 binary zeroes or newlines because the value is written to log lines and
1890 to spool files. There was no check on this. Now the value is run through
1891 the string_printing() function so that such characters are converted to
1892 printable escape sequences.
1893
2e0c1448
PH
1894PH/41 $message_linecount is a new variable that contains the total number of
1895 lines in the message. Compare $body_linecount, which is the count for the
1896 body only.
1897
447d236c
PH
1898PH/42 Exim no longer gives details of delivery errors for specific addresses in
1899 bounce and delay warning messages, except in certain special cases, which
1900 are as follows:
1901
1902 (a) An SMTP error message from a remote host;
1903 (b) A message specified in a :fail: redirection;
1904 (c) A message specified in a "fail" command in a system filter;
1905 (d) A message specified in a FAIL return from the queryprogram router;
1906 (e) A message specified by the cannot_route_message router option.
1907
1908 In these cases only, Exim does include the error details in bounce and
1909 warning messages. There are also a few cases where bland messages such
1910 as "unrouteable address" or "local delivery error" are given.
1911
d20976dc
PH
1912PH/43 $value is now also set for the "else" part of a ${run expansion.
1913
f656d135
PH
1914PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1915 being worked on, but at least Exim now implements the latest version to
1916 play with."
1917
2e2a30b4
PH
1918PH/45 In a pipe transport, although a timeout while waiting for the pipe
1919 process to complete was treated as a delivery failure, a timeout while
1920 writing the message to the pipe was logged, but erroneously treated as a
1921 successful delivery. Such timeouts include transport filter timeouts. For
1922 consistency with the overall process timeout, these timeouts are now
1923 treated as errors, giving rise to delivery failures by default. However,
1924 there is now a new Boolean option for the pipe transport called
1925 timeout_defer, which, if set TRUE, converts the failures into defers for
1926 both kinds of timeout. A transport filter timeout is now identified in
1927 the log output.
1928
9176e9f0
PH
1929PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1930 systems where "make" and "gmake" are different, calling "gmake" at top
1931 level broke things. I've arranged for the value of $(MAKE) to be passed
1932 from the Makefile to this script so that it can call the same version of
1933 "make".
1934
7982096b 1935
bbe902f0
PH
1936A note about Exim versions 4.44 and 4.50
1937----------------------------------------
1938
1939Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1940changes of various kinds. As a consequence, a big documentation update was
1941needed. This delayed the release for rather longer than seemed good, especially
1942in the light of a couple of (minor) security issues. Therefore, the changes
1943that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1944release. So 4.44 and 4.50 are in effect two different branches that both start
1945from 4.43.
1946
1947I have left the 4.50 change log unchanged; it contains all the changes since
19484.43. The change log for 4.44 is below; many of its items are identical to
1949those for 4.50. This seems to be the most sensible way to preserve the
1950historical information.
1951
1952
f7b63901 1953Exim version 4.50
495ae4b0
PH
1954-----------------
1955
5fe762f6
PH
1956 1. Minor wording change to the doc/README.SIEVE file.
1957
139059f6 1958 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1959 computation of the current number of files was incorrect.
495ae4b0 1960
7086e875
PH
1961 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1962 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1963 place.
1964
35af9f61
PH
1965 4. Give more explanation in the error message when the command for a transport
1966 filter fails to execute.
1967
b668c215
PH
1968 5. There are several places where Exim runs a non-Exim command in a
1969 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1970 was being done only for the command run by the queryprogram router. It is
1971 now done for all such subprocesses. The other cases are: ${run, transport
1972 filters, and the commands run by the lmtp and pipe transports.
1973
a494b1e1
PH
1974 6. Added CONFIGURE_GROUP build-time option.
1975
1976 7. Some older OS have a limit of 256 on the maximum number of file
1977 descriptors. Exim was using setrlimit() to set 1000 as a large value
1978 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1979 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1980
c5fcb476
PH
1981 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1982 was an oversight, and furthermore, ever since the addition of extra
1983 controls (e.g. 4.43/32), the checks on when to allow different forms of
1984 "control" were broken. There should now be diagnostics for all cases when a
1985 control that does not make sense is encountered.
1986
69358f02
PH
1987 9. Added the /retain_sender option to "control=submission".
1988
5be20824
PH
198910. $recipients is now available in the predata ACL (oversight).
1990
eb2c0248
PH
199111. Tidy the search cache before the fork to do a delivery from a message
1992 received from the command line. Otherwise the child will trigger a lookup
1993 failure and thereby defer the delivery if it tries to use (for example) a
1994 cached ldap connection that the parent has called unbind on.
1995
2a3eea10
PH
199612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1997 of $address_data from the recipient verification was clobbered by the
1998 sender verification.
1999
200013. The value of address_data from a sender verification is now available in
2001 $sender_address_data in subsequent conditions in the ACL statement.
2002
23c7ff99
PH
200314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2004
4deaf07d
PH
200515. Added a new option "connect=<time>" to callout options, to set a different
2006 connection timeout.
2007
926e1192
PH
200816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2009 was its contents. (It was OK if the option was not defined at all.)
2010
650edc6f
PH
201117. A "Completed" log line is now written for messages that are removed from
2012 the spool by the -Mrm option.
2013
2c7db3f5
PH
201418. New variables $sender_verify_failure and $recipient_verify_failure contain
2015 information about exactly what failed.
2016
3d235903
PH
201719. Added -dd to debug only the daemon process.
2018
7c7ad977
PH
201920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2020 handles timeouts, both on the server side and network timeouts. Renamed the
2021 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2022
981756db
PH
202321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2024 It is now set to "smtps".
2025
d4eb88df
PH
202622. $host_address is now set to the target address during the checking of
2027 ignore_target_hosts.
2028
202923. When checking ignore_target_hosts for an ipliteral router, no host name was
2030 being passed; this would have caused $sender_host_name to have been used if
2031 matching the list had actually called for a host name (not very likely,
2032 since this list is usually IP addresses). A host name is now passed as
2033 "[x.x.x.x]".
2034
7d468ab8
PH
203524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2036 code that specifies a non-restarting handler (typically sigaction() in
2037 modern systems) in an attempt to fix a rare and obscure crash bug.
2038
203925. Narrowed the window for a race in the daemon that could cause it to ignore
2040 SIGCHLD signals. This is not a major problem, because they are used only to
2041 wake it up if nothing else does.
2042
62c0818f
PH
204326. A malformed maildirsize file could cause Exim to calculate negative values
2044 for the mailbox size or file count. Odd effects could occur as a result.
2045 The maildirsize information is now recalculated if the size or filecount
2046 end up negative.
2047
26034054
PH
204827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2049 support for a long time. Removed HAVE_SYS_VFS_H.
2050
af66f652
PH
205128. Installed the latest version of exipick from John Jetmore.
2052
90af77f4
PH
205329. In an address list, if the pattern was not a regular expression, an empty
2054 subject address (from a bounce message) matched only if the pattern was an
2055 empty string. Non-empty patterns were not even tested. This was the wrong
2056 because it is perfectly reasonable to use an empty address as part of a
2057 database query. An empty address is now tested by patterns that are
2058 lookups. However, all the other forms of pattern expect the subject to
2059 contain a local part and a domain, and therefore, for them, an empty
2060 address still always fails if the pattern is not itself empty.
2061
d8ef3577
PH
206230. Exim went into a mad DNS loop when attempting to do a callout where the
2063 host was specified on an smtp transport, and looking it up yielded more
2064 than one IP address.
2065
5cb8cbc6
PH
206631. Re-factored the code for checking spool and log partition space into a
2067 function that finds that data and another that does the check. The former
2068 is then used to implement four new variables: $spool_space, $log_space,
2069 $spool_inodes, and $log_inodes.
2070
14702f5b
PH
207132. The RFC2047 encoding function was originally intended for short strings
2072 such as real names; it was not keeping to the 75-character limit for
2073 encoded words that the RFC imposes. It now respects the limit, and
2074 generates multiple encoded words if necessary. To be on the safe side, I
2075 have increased the buffer size for the ${rfc2047: expansion operator from
2076 1024 to 2048 bytes.
2077
063b1e99
PH
207833. It is now permitted to omit both strings after an "if" condition; if the
2079 condition is true, the result is "true". As before, when the second string
2080 is omitted, a false condition yields an empty string. This makes it less
2081 cumbersome to write custom ACL and router conditions.
2082
652e1b65
PH
208334. Failure to deliver a bounce message always caused it to be frozen, even if
2084 there was an errors_to setting on the router. The errors_to setting is now
2085 respected.
2086
6f0c9a4f
PH
208735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2088 canonical form (fully expanded) before being placed in
2089 $sender_host_address.
2090
33397d19
PH
209136. The table in the code that translates DNS record types into text (T_A to
2092 "A" for instance) was missing entries for NS and CNAME. It is just possible
2093 that this could have caused confusion if both these types were looked up
2094 for the same domain, because the text type is used as part of Exim's
2095 per-process caching. But the chance of anyone hitting this buglet seems
2096 very small.
2097
7bb56e1f
PH
209837. The dnsdb lookup has been extended in a number of ways.
2099
2100 (1) There is a new type, "zns", which walks up the domain tree until it
2101 finds some nameserver records. It should be used with care.
2102
ea3bc19b
PH
2103 (2) There is a new type, "mxh", which is like "mx" except that it returns
2104 just the host names, not the priorities.
2105
2106 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2107 looked up. The behaviour when one of the lookups defers can be
2108 controlled by a keyword.
7bb56e1f 2109
ea3bc19b 2110 (4) It is now possible to specify the separator character for use when
7bb56e1f 2111 multiple records are returned.
33397d19 2112
0bcb2a0e
PH
211338. The dnslists ACL condition has been extended: it is now possible to supply
2114 a list of IP addresses and/or domains to be looked up in a particular DNS
2115 domain.
2116
2ac0e484
PH
211739. Added log_selector=+queue_time_overall.
2118
4e1fde53
PH
211940. When running the queue in the test harness, wait just a tad after forking a
2120 delivery process, to get repeatability of debugging output.
2121
de365ded
PH
212241. Include certificate and key file names in error message when GnuTLS fails
2123 to set them up, because the GnuTLS error message doesn't include the name
2124 of the failing file when there is a problem reading it.
2125
f05da2e8
PH
212642. Allow both -bf and -bF in the same test run.
2127
d6453af2
PH
212843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2129
f7b63901
PH
213044. The "Exiscan patch" is now merged into the mainline Exim source.
2131
213245. Sometimes the final signoff response after QUIT could fail to get
2133 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2134 < 0 before doing a fflush(). This bug looks as though it goes back to the
2135 introduction of TLS in release 3.20, but "sometimes" must have been rare
2136 because the tests only now provoked it.
2137
a444213a
PH
213846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2139 (this can affect the format of dates).
2140
0ec020ea
PH
214147. exim_tidydb, when checking for the continued existence of a message for
2142 which it has found a message-specific retry record, was not finding
2143 messages that were in split spool directories. Consequently, it was
2144 deleting retry records that should have stayed in existence.
2145
b1206957
PH
214648. Steve fixed some bugs in eximstats.
2147
214849. The SPA authentication driver was not abandoning authentication and moving
2149 on to the next authenticator when an expansion was forced to fail,
2150 contradicting the general specification for all authenticators. Instead it
2151 was generating a temporary error. It now behaves as specified.
2152
26dd5a95
PH
215350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2154 (the order specifies the preference for clients). The order is now AES256,
2155 AES128, 3DES, ARCFOUR128.
2156
343b2385
PH
215751. Small patch to Sieve code - explicitly set From: when generating an
2158 autoreply.
2159
1c5466b9
PH
216052. Exim crashed if a remote delivery caused a very long error message to be
2161 recorded - for instance if somebody sent an entire SpamAssassin report back
2162 as a large number of 550 error lines. This bug was coincidentally fixed by
2163 increasing the size of one of Exim's internal buffers (big_buffer) that
2164 happened as part of the Exiscan merge. However, to be on the safe side, I
2165 have made the code more robust (and fixed the comments that describe what
2166 is going on).
2167
55ee9ee3
PH
216853. Now that there can be additional text after "Completed" in log lines (if
2169 the queue_time_overall log selector is set), a one-byte patch to exigrep
2170 was needed to allow it to recognize "Completed" as not the last thing in
2171 the line.
2172
d38f8232
PH
217354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2174 patch that reportedly fixes this has been added. I am not expert enough to
2175 create a test for it. This is what the patch creator wrote:
2176
2177 "I found a little strange behaviour of ldap code when working with
2178 Windows 2003 AD Domain, where users was placed in more than one
2179 Organization Units. When I tried to give exim partial DN, the exit code
2180 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2181 But simultaneously result of request was absolutely normal ldap result,
2182 so I produce this patch..."
2183
3295e65b
PH
2184 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2185 REFERENCE, so I have modified the code to exclude the patch when that macro
2186 is not defined.
2187
7102e136
PH
218855. Some experimental protocols are using DNS PTR records for new purposes. The
2189 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2190 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2191 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2192 CAN-2005-0021
7102e136 2193
3ca0ba97
PH
219456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2195
c2bcbe20
PH
219657. Double the size of the debug message buffer (to 2048) so that more of very
2197 long debug lines gets shown.
2198
18ce445d
PH
219958. The exicyclog utility now does better if the number of log files to keep
2200 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2201
1f5b4c3d
PH
220259. Two changes related to the smtp_active_hostname option:
2203
2204 (1) $smtp_active_hostname is now available as a variable.
2205 (2) The default for smtp_banner uses $smtp_active_hostname instead
2206 of $primary_hostname.
2207
b975ba52
PH
220860. The host_aton() function is supposed to be passed a string that is known
2209 to be a valid IP address. However, in the case of IPv6 addresses, it was
2210 not checking this. This is a hostage to fortune. Exim now panics and dies
2211 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2212 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2213 components; fortuitously, this particular loophole had already been fixed
2214 by change 4.50/55 above.
2215
2216 If there are any other similar loopholes, the new check in host_aton()
2217 itself should stop them being exploited. The report I received stated that
2218 data on the command line could provoke the exploit when Exim was running as
2219 exim, but did not say which command line option was involved. All I could
2220 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2221 running as the user.
ea3a6f44 2222 CAN-2005-0021
85b87bc2
PH
2223
222461. There was a buffer overflow vulnerability in the SPA authentication code
2225 (which came originally from the Samba project). I have added a test to the
2226 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2227 CAN-2005-0022
b975ba52 2228
17ffcae7
PH
222962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2230 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2231
d95f9fdb
PH
223263. The daemon start-up calls getloadavg() while still root for those OS that
2233 need the first call to be done as root, but it missed one case: when
2234 deliver_queue_load_max is set with deliver_drop_privilege. This is
2235 necessary for the benefit of the queue runner, because there is no re-exec
2236 when deliver_drop_privilege is set.
2237
86b8287f
PH
223864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2239 This has been fixed.
2240
60dc5e56
PH
224165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2242 was in use, was not putting the data itself into the right store pool;
2243 consequently, it could be overwritten for a subsequent message in the same
2244 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2245 the caching.)
2246
533244af
PH
224766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2248
a5a28604
PH
224967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2250 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2251 the function were treating the return as a boolean value, which happened to
2252 work because 0=false and not-0=true, but is not correct code.
2253
7e634d24
PH
225468. The host_aton() function was not handling scoped IPv6 addresses (those
2255 with, for example, "%eth0" on the end) correctly.
2256
3e11c26b
PH
225769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2258 negated items (that is, ~something) in unsigned ints. Some compilers
2259 apparently mutter when there is no cast.
2260
6729cf78
PH
226170. If an address verification called from an ACL failed, and did not produce a
2262 user-specific message (i.e. there was only a "system" message), nothing was
2263 put in $acl_verify_message. In this situation, it now puts the system
2264 message there.
2265
00f00ca5
PH
226671. Change 4.23/11 added synchronization checking at the start of an SMTP
2267 session; change 4.31/43 added the unwanted input to the log line - except
2268 that it did not do this in the start of session case. It now does.
2269
c9bdd01c
PH
227072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2271 This is wrong and can cause the other end to generate a synchronization
2272 error if it is another Exim or anything else that does the synchronization
2273 check. A QUIT command is no longer sent after a timeout.
2274
d43194df
PH
227573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2276 during host lookups.
2277
fe5b5d0b
PH
227874. The defer_ok option of callout verification was not working if it was used
2279 when verifying addresses in header lines, that is, for this case:
2280
2281 verify = header_sender/callout=defer_ok
2282
76a2d7ba
PH
228375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2284 those file descriptors could be used for SMTP connections. If anything
2285 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2286 could be sent to the SMTP client, causing chaos. The daemon now opens
2287 stdin, stdout, and stderr to /dev/null when it puts itself into the
2288 background.
2289
229076. Arrange for output from Perl's "warn" command to be written to Exim's main
2291 log by default. The user can override this with suitable Perl magic.
2292
04f7d5b9
PH
229377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2294 the log message when discard triggers, was not working for the DATA ACL or
2295 for the non-SMTP ACL.
2296
bc60667e
PH
229778. Error message wording change in sieve.c.
2298
bb6e88ff
PH
229979. If smtp_accept_max_per_host was set, the number of connections could be
2300 restricted to fewer than expected, because the daemon was trying to set up
2301 a new connection before checking whether the processes handling previous
2302 connections had finished. The check for completed processes is now done
2303 earlier. On busy systems, this bug wouldn't be noticed because something
2304 else would have woken the daemon, and it would have reaped the completed
2305 process earlier.
2306
1e70f85b
PH
230780. If a message was submitted locally by a user whose login name contained one
2308 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2309 It caused a spool format error. I have fixed the spool reading code. A
2310 related problem was that the "from" clause in the Received: line became
2311 illegal because of the space(s). It is now covered by ${quote_local_part.
2312
231381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2314 tables).
2315
4e01f9d6
PH
231682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2317
1ee1cef2
PH
231883. Patch from Sieve maintainer to fix unterminated string problem in
2319 "vacation" handling.
2320
6e2b4ccc
PH
232184. Some minor changes to the Linux configuration files to help with other
2322 OS variants using glibc.
2323
8e669ac1
PH
232485. One more patch for Sieve to update vacation handling to latest spec.
2325
495ae4b0 2326
bbe902f0
PH
2327----------------------------------------------------
2328See the note above about the 4.44 and 4.50 releases.
2329----------------------------------------------------
2330
2331
2332Exim version 4.44
2333-----------------
2334
2335 1. Change 4.43/35 introduced a bug that caused file counts to be
2336 incorrectly computed when quota_filecount was set in an appendfile
2337 transport
2338
2339 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2340 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2341 place.
2342
2343 3. Give more explanation in the error message when the command for a transport
2344 filter fails to execute.
2345
2346 4. There are several places where Exim runs a non-Exim command in a
2347 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2348 was being done only for the command run by the queryprogram router. It is
2349 now done for all such subprocesses. The other cases are: ${run, transport
2350 filters, and the commands run by the lmtp and pipe transports.
2351
2352 5. Some older OS have a limit of 256 on the maximum number of file
2353 descriptors. Exim was using setrlimit() to set 1000 as a large value
2354 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2355 systems. I've change it so that if it can't get 1000, it tries for 256.
2356
2357 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2358 was an oversight, and furthermore, ever since the addition of extra
2359 controls (e.g. 4.43/32), the checks on when to allow different forms of
2360 "control" were broken. There should now be diagnostics for all cases when a
2361 control that does not make sense is encountered.
2362
2363 7. $recipients is now available in the predata ACL (oversight).
2364
2365 8. Tidy the search cache before the fork to do a delivery from a message
2366 received from the command line. Otherwise the child will trigger a lookup
2367 failure and thereby defer the delivery if it tries to use (for example) a
2368 cached ldap connection that the parent has called unbind on.
2369
2370 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2371 of $address_data from the recipient verification was clobbered by the
2372 sender verification.
2373
237410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2375 was its contents. (It was OK if the option was not defined at all.)
2376
237711. A "Completed" log line is now written for messages that are removed from
2378 the spool by the -Mrm option.
2379
238012. $host_address is now set to the target address during the checking of
2381 ignore_target_hosts.
2382
238313. When checking ignore_target_hosts for an ipliteral router, no host name was
2384 being passed; this would have caused $sender_host_name to have been used if
2385 matching the list had actually called for a host name (not very likely,
2386 since this list is usually IP addresses). A host name is now passed as
2387 "[x.x.x.x]".
2388
238914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2390 code that specifies a non-restarting handler (typically sigaction() in
2391 modern systems) in an attempt to fix a rare and obscure crash bug.
2392
239315. Narrowed the window for a race in the daemon that could cause it to ignore
2394 SIGCHLD signals. This is not a major problem, because they are used only to
2395 wake it up if nothing else does.
2396
239716. A malformed maildirsize file could cause Exim to calculate negative values
2398 for the mailbox size or file count. Odd effects could occur as a result.
2399 The maildirsize information is now recalculated if the size or filecount
2400 end up negative.
2401
240217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2403 support for a long time. Removed HAVE_SYS_VFS_H.
2404
ea3a6f44 240518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2406
240719. Allow an empty sender to be matched against a lookup in an address list.
2408 Previously the only cases considered were a regular expression, or an
2409 empty pattern.
2410
241120. Exim went into a mad DNS lookup loop when doing a callout where the
2412 host was specified on the transport, if the DNS lookup yielded more than
2413 one IP address.
2414
ea3a6f44
NM
241521. The RFC2047 encoding function was originally intended for short strings
2416 such as real names; it was not keeping to the 75-character limit for
2417 encoded words that the RFC imposes. It now respects the limit, and
2418 generates multiple encoded words if necessary. To be on the safe side, I
2419 have increased the buffer size for the ${rfc2047: expansion operator from
2420 1024 to 2048 bytes.
bbe902f0 2421
ea3a6f44
NM
242222. Failure to deliver a bounce message always caused it to be frozen, even if
2423 there was an errors_to setting on the router. The errors_to setting is now
2424 respected.
bbe902f0
PH
2425
242623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2427 canonical form (fully expanded) before being placed in
2428 $sender_host_address.
2429
243024. Updated eximstats to version 1.33
2431
ea3a6f44
NM
243225. Include certificate and key file names in error message when GnuTLS fails
2433 to set them up, because the GnuTLS error message doesn't include the name
2434 of the failing file when there is a problem reading it.
bbe902f0
PH
2435
243626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2437 As per change 25.
bbe902f0 2438
ea3a6f44
NM
243927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2440 (this can affect the format of dates).
bbe902f0 2441
ea3a6f44
NM
244228. exim_tidydb, when checking for the continued existence of a message for
2443 which it has found a message-specific retry record, was not finding
2444 messages that were in split spool directories. Consequently, it was
2445 deleting retry records that should have stayed in existence.
bbe902f0
PH
2446
244729. eximstats updated to version 1.35
2448 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2449 1.35 - bugfix such that pie charts by volume are generated correctly
2450
ea3a6f44
NM
245130. The SPA authentication driver was not abandoning authentication and moving
2452 on to the next authenticator when an expansion was forced to fail,
2453 contradicting the general specification for all authenticators. Instead it
2454 was generating a temporary error. It now behaves as specified.
bbe902f0 2455
ea3a6f44
NM
245631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2457 (the order specifies the preference for clients). The order is now AES256,
2458 AES128, 3DES, ARCFOUR128.
bbe902f0 2459
ea3a6f44
NM
246031. Small patch to Sieve code - explicitly set From: when generating an
2461 autoreply.
bbe902f0 2462
ea3a6f44
NM
246332. Exim crashed if a remote delivery caused a very long error message to be
2464 recorded - for instance if somebody sent an entire SpamAssassin report back
2465 as a large number of 550 error lines. This bug was coincidentally fixed by
2466 increasing the size of one of Exim's internal buffers (big_buffer) that
2467 happened as part of the Exiscan merge. However, to be on the safe side, I
2468 have made the code more robust (and fixed the comments that describe what
2469 is going on).
bbe902f0 2470
ea3a6f44
NM
247133. Some experimental protocols are using DNS PTR records for new purposes. The
2472 keys for these records are domain names, not reversed IP addresses. The
2473 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2474 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2475 CAN-2005-0021
2476
ea3a6f44
NM
247734. The host_aton() function is supposed to be passed a string that is known
2478 to be a valid IP address. However, in the case of IPv6 addresses, it was
2479 not checking this. This is a hostage to fortune. Exim now panics and dies
2480 if the condition is not met. A case was found where this could be provoked
2481 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2482 components; fortuitously, this particular loophole had already been fixed
2483 by change 4.50/55 or 4.44/33 above.
2484
2485 If there are any other similar loopholes, the new check in host_aton()
2486 itself should stop them being exploited. The report I received stated that
2487 data on the command line could provoke the exploit when Exim was running as
2488 exim, but did not say which command line option was involved. All I could
2489 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2490 running as the user.
bbe902f0
PH
2491 CAN-2005-0021
2492
ea3a6f44
NM
249335. There was a buffer overflow vulnerability in the SPA authentication code
2494 (which came originally from the Samba project). I have added a test to the
2495 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2496 CAN-2005-0022
2497
ea3a6f44
NM
249836. The daemon start-up calls getloadavg() while still root for those OS that
2499 need the first call to be done as root, but it missed one case: when
2500 deliver_queue_load_max is set with deliver_drop_privilege. This is
2501 necessary for the benefit of the queue runner, because there is no re-exec
2502 when deliver_drop_privilege is set.
bbe902f0 2503
ea3a6f44
NM
250437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2505 was in use, was not putting the data itself into the right store pool;
2506 consequently, it could be overwritten for a subsequent message in the same
2507 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2508 the caching.)
bbe902f0 2509
ea3a6f44
NM
251038. Sometimes the final signoff response after QUIT could fail to get
2511 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2512 < 0 before doing a fflush(). This bug looks as though it goes back to the
2513 introduction of TLS in release 3.20, but "sometimes" must have been rare
2514 because the tests only now provoked it.
bbe902f0
PH
2515
2516
495ae4b0
PH
2517Exim version 4.43
2518-----------------
2519
2520 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2521 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2522 Now it returns an integer. A number of calls were still expecting a T/F
2523 return. Fortuitously, in all cases, the tests worked in OK situations,
2524 which is the norm. However, things would have gone wrong on any write
2525 failures on the smtp file descriptor. This function is used when sending
2526 messages over SMTP and also when doing verify callouts.
2527
2528 2. When Exim is called to do synchronous delivery of a locally submitted
2529 message (the -odf or -odi options), it no longer closes stderr before doing
2530 the delivery.
2531
2532 3. Implemented the mua_wrapper option.
2533
2534 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2535
2536 5. Implemented the functions header_remove(), header_testname(),
2537 header_add_at_position(), and receive_remove_recipient(), and exported them
2538 to local_scan().
2539
2540 6. If an ACL "warn" statement specified the addition of headers, Exim already
2541 inserted X-ACL-Warn: at the start if there was no header name. However, it
2542 was not making this test for the second and subsequent header lines if
2543 there were newlines in the string. This meant that an invalid header could
2544 be inserted if Exim was badly configured.
2545
2546 7. Allow an ACL "warn" statement to add header lines at the start or after all
2547 the Received: headers, as well as at the end.
2548
2549 8. Added the rcpt_4xx retry error code.
2550
2551 9. Added postmaster_mailfrom=xxx to callout verification option.
2552
255310. Added mailfrom=xxxx to the callout verification option, for verify=
2554 header_sender only.
2555
255611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2557 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2558
255912. Inserted some casts to stop certain compilers warning when using pointer
2560 differences as field lengths or precisions in printf-type calls (mostly
2561 affecting debugging statements).
2562
256313. Added optional readline() support for -be (dynamically loaded).
2564
256514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2566 same clock tick as a message's arrival, so that its received time was the
2567 same as the "first fail" time on the retry record, and that message
2568 remained on the queue past the ultimate address timeout, every queue runner
2569 would try a delivery (because it was past the ultimate address timeout) but
2570 after another failure, the ultimate address timeout, which should have then
2571 bounced the address, did not kick in. This was a "< instead of <=" error;
2572 in most cases the first failure would have been in the next clock tick
2573 after the received time, and all would be well.
2574
257515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2576 being recognized when the domain list was tested by the match_domain
2577 condition in an expansion string.
2578
257916. Added the ${str2b64: operator.
2580
258117. Exim was always calling setrlimit() to set a large limit for the number of
2582 processes, without checking whether the existing limit was already
2583 adequate. (It did check for the limit on file descriptors.) Furthermore,
2584 errors from getrlimit() and setrlimit() were being ignored. Now they are
2585 logged to the main and panic logs, but Exim does carry on, to try to do its
2586 job under whatever limits there are.
2587
258818. Imported PCRE 5.0.
2589
259019. Trivial typo in log message " temporarily refused connection" (the leading
2591 space).
2592
259320. If the log selector return_path_on_delivery was set and an address was
2594 redirected to /dev/null, the delivery process crashed because it assumed
2595 that a return path would always be set for a "successful" delivery. In this
2596 case, the whole delivery is bypassed as an optimization, and therefore no
2597 return path is set.
2598
259921. Internal re-arrangement: the function for sending a challenge and reading
2600 a response while authentication was assuming a zero-terminated challenge
2601 string. It's now changed to take a pointer and a length, to allow for
2602 binary data in such strings.
2603
260422. Added the cyrus_sasl authenticator (code supplied by MBM).
2605
260623. Exim was not respecting finduser_retries when seeking the login of the
2607 uid under which it was called; it was always trying 10 times. (The default
2608 setting of finduser_retries is zero.) Also, it was sleeping after the final
2609 failure, which is pointless.
2610
261124. Implemented tls_on_connect_ports.
2612
261325. Implemented acl_smtp_predata.
2614
261526. If the domain in control=submission is set empty, Exim assumes that the
2616 authenticated id is a complete email address when it generates From: or
2617 Sender: header lines.
2618
261927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2620 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2621 chown and chgrp in /bin and hostname in /usr/bin.
2622
262328. Exim was keeping the "process log" file open after each use, just as it
2624 does for the main log. This opens the possibility of it remaining open for
2625 long periods when the USR1 signal hits a daemon. Occasional processlog
2626 errors were reported, that could have been caused by this. Anyway, it seems
2627 much more sensible not to leave this file open at all, so that is what now
2628 happens.
2629
263029. The long-running daemon process does not normally write to the log once it
2631 has entered its main loop, and it closes the log before doing so. This is
2632 so that log files can straightforwardly be renamed and moved. However,
2633 there are a couple of unusual error situations where the daemon does write
2634 log entries, and I had neglected to close the log afterwards.
2635
263630. The text of an SMTP error response that was received during a remote
2637 delivery was being truncated at 512 bytes. This is too short for some of
2638 the long messages that one sometimes sees. I've increased the limit to
2639 1024.
2640
264131. It is now possible to make retry rules that apply only when a message has a
2642 specific sender, in particular, an empty sender.
2643
264432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2645 it possible to be selective about when SMTP synchronization is enforced.
2646
264733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2648
264932. Implemented hosts_connection_nolog.
2650
265133. Added an ACL for QUIT.
2652
265334. Setting "delay_warning=" to disable warnings was not working; it gave a
2654 syntax error.
2655
265635. Added mailbox_size and mailbox_filecount to appendfile.
2657
265836. Added control = no_multiline_responses to ACLs.
2659
266037. There was a bug in the logic of the code that waits for the clock to tick
2661 in the case where the clock went backwards by a substantial amount such
2662 that the microsecond fraction of "now" was more than the microsecond
2663 fraction of "then" (but the whole seconds number was less).
2664
266538. Added support for the libradius Radius client library this is found on
2666 FreeBSD (previously only the radiusclient library was supported).
2667
2668
2669Exim version 4.42
2670-----------------
2671
2672 1. When certain lookups returned multiple values in the form name=value, the
2673 quoting of the values was not always being done properly. Specifically:
2674 (a) If the value started with a double quote, but contained no whitespace,
2675 it was not quoted.
2676 (b) If the value contained whitespace other than a space character (i.e.
2677 tabs or newlines or carriage returns) it was not quoted.
2678 This fix has been applied to the mysql and pgsql lookups by writing a
2679 separate quoting function and calling it from the lookup code. The fix
2680 should probably also be applied to nisplus, ibase and oracle lookups, but
2681 since I cannot test any of those, I have not disturbed their existing code.
2682
2683 2. A hit in the callout cache for a specific address caused a log line with no
2684 reason for rejecting RCPT. Now it says "Previous (cached) callout
2685 verification failure".
2686
2687 3. There was an off-by-one bug in the queryprogram router. An over-long
2688 return line was truncated at 256 instead of 255 characters, thereby
2689 overflowing its buffer with the terminating zero. As well as fixing this, I
2690 have increased the buffer size to 1024 (and made a note to document this).
2691
2692 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2693 when Exim is waiting for an SMTP response from a remote server, Exim
2694 restarts its select() call on the socket, thereby resetting its timeout.
2695 This is not a problem when such interrupts are rare. Somebody set up a cron
2696 job to run exiwhat every 2 minutes, which is less than the normal select()
2697 timeout (5 or 10 minutes). This meant that the select() timeout never
2698 kicked in because it was always reset. I have fixed this by comparing the
2699 time when an interrupt arrives with the time at the start of the first call
2700 to select(). If more time than the timeout has elapsed, the interrupt is
2701 treated as a timeout.
2702
2703 5. Some internal re-factoring in preparation for the addition of Sieve
2704 extensions (by MH). In particular, the "personal" test is moved to a
2705 separate function, and given an option for scanning Cc: and Bcc: (which is
2706 not set for Exim filters).
2707
2708 6. When Exim created an email address using the login of the caller as the
2709 local part (e.g. when creating a From: or Sender: header line), it was not
2710 quoting the local part when it contained special characters such as @.
2711
2712 7. Installed new OpenBSD configuration files.
2713
2714 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2715 try to make them clearer.
2716
2717 9. Callout options, other than the timeout value, were being ignored when
2718 verifying sender addresses in header lines. For example, when using
2719
2720 verify = header_sender/callout=no_cache
2721
2722 the cache was (incorrectly) being used.
2723
272410. Added a missing instance of ${EXE} to the exim_install script; this affects
2725 only the Cygwin environment.
2726
272711. When return_path_on_delivery was set as a log selector, if different remote
2728 addresses in the same message used different return paths and parallel
2729 remote delivery occurred, the wrong values would sometimes be logged.
2730 (Whenever a remote delivery process finished, the return path value from
2731 the most recently started remote delivery process was logged.)
2732
273312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2734 lines when AUTH and/or TLS are in use. This is the "received protocol"
2735 field. Exim used to use "asmtp" for authenticated SMTP, without any
2736 indication (in the protocol name) for TLS use. Now it follows the RFC and
2737 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2738 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2739 names appear in log lines as well as in Received: header lines.
2740
274113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2742 extensions, and comparison tests, and to fix some bugs.
2743
274414. Changes to the "personal" filter test:
2745
2746 (1) The test was buggy in that it was just doing the equivalent of
2747 "contains" tests on header lines. For example, if a user's address was
2748 anne@some.where, the "personal" test would incorrectly be true for
2749
2750 To: susanne@some.where
2751
2752 This test is now done by extracting each address from the header in turn,
2753 and checking the entire address. Other tests that are part of "personal"
2754 are now done using regular expressions (for example, to check local parts
2755 of addresses in From: header lines).
2756
2757 (2) The list of non-personal local parts in From: addresses has been
2758 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2759 taken from the Sieve specification recommendations.
2760
2761 (3) If the message contains any header line starting with "List-" it is
2762 treated as non-personal.
2763
2764 (4) The test for "circular" in the Subject: header line has been removed
2765 because it now seems ill-conceived.
2766
276715. Minor typos in src/EDITME comments corrected.
2768
276916. Installed latest exipick from John Jetmore.
2770
277117. If headers_add on a router specified a text string that was too long for
2772 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2773 of string_sprintf() is now avoided.
2774
277518. $message_body_size was not set (it was always zero) when running the DATA
2776 ACL and the local_scan() function.
2777
277819. For the "mail" command in an Exim filter, no default was being set for
2779 the once_repeat time, causing a random time value to be used if "once" was
2780 specified. (If the value happened to be <= 0, no repeat happened.) The
2781 default is now 0s, meaning "never repeat". The "vacation" command was OK
2782 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2783 (I found it when inspecting the code).
2784
278520. There is now an overall timeout for performing a callout verification. It
2786 defaults to 4 times the callout timeout, which applies to individual SMTP
2787 commands during the callout. The overall timeout applies when there is more
2788 than one host that can be tried. The timeout is checked before trying the
2789 next host. This prevents very long delays if there are a large number of
2790 hosts and all are timing out (e.g. when the network connections are timing
2791 out). The value of the overall timeout can be changed by specifying an
2792 additional sub-option for "callout", called "maxwait". For example:
2793
2794 verify = sender/callout=5s,maxwait=20s
2795
279621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2797 to the end before writing, but this should make it even safer).
2798
279922. Exim was forgetting that it had advertised PIPELINING for the second and
2800 subsequent messages on an SMTP connection. It was also not resetting its
2801 memory on STARTTLS and an internal HELO.
2802
280323. When Exim logs an SMTP synchronization error within a session, it now
2804 records whether PIPELINING has been advertised or not.
2805
280624. Added 3 instances of "(long int)" casts to time_t variables that were being
2807 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2808 rather than long int.
2809
281025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2811
281226. Added the never_mail option to autoreply.
2813
2814
2815Exim version 4.41
2816-----------------
2817
2818 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2819 crash if the getsockname() call failed; this can happen if a connection is
2820 closed very soon after it is established. The problem was simply in the
2821 order in which certain operations were done, causing Exim to try to write
2822 to the SMTP stream before it had set up the file descriptor. The bug has
2823 been fixed by making things happen in the correct order.
2824
2825
2826Exim version 4.40
2827-----------------
2828
2829 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2830 before the connection was closed, thus losing the rejection response.
2831
2832 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2833 some early Solaris releases, but causes trouble in current releases where
2834 socklen_t is defined.
2835
2836 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2837 always exist.
2838
2839 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2840 configured.
2841
2842 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2843 that releasing the top of it at the end releases what was used for sub-
2844 expansions (unless the block got too big). However, discard this block if
2845 the first thing is a variable or header, so that we can use its block when
2846 it is dynamic (useful for very large $message_headers, for example).
2847
2848 6. Lookups now cache *every* query, not just the most recent. A new, separate
2849 store pool is used for this. It can be recovered when all lookup caches are
2850 flushed. Lookups now release memory at the end of their result strings.
2851 This has involved some general refactoring of the lookup sources.
2852
2853 7. Some code has been added to the store_xxx() functions to reduce the amount
2854 of flapping under certain conditions.
2855
2856 8. log_incoming_interface used to affect only the <= reception log lines. Now
2857 it causes the local interface and port to be added to several more SMTP log
2858 lines, for example "SMTP connection from", and rejection lines.
2859
2860 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2861
286210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2863
286411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2865 could be overwritten at the end of the current message (or the start of a
2866 new message if it was set in a HELO ACL). The value is now preserved for
2867 the duration of the SMTP connection.
2868
286912. If a transport had a headers_rewrite setting, and a matching header line
2870 contained an unqualified address, that address was qualified, even if it
2871 did not match any rewriting rules. The underlying bug was that the values
2872 of the flags that permit the existence of unqualified sender and recipient
2873 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2874 non-local messages, and by -bnq for local messages) were not being
2875 preserved with the message after it was received.
2876
287713. When Exim was logging an SMTP synchronization error, it could sometimes log
2878 "next input=" as part of the text comprising the host identity instead of
2879 the correct text. The code was using the same buffer for two different
2880 strings. However, depending on which order the printing function evaluated
2881 its arguments, the bug did not always show up. Under Linux, for example, my
2882 test suite worked just fine.
2883
288414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2885 doesn't work with some older versions of Perl. It has been changed to "my",
2886 which in any case is probably the better facility to use.
2887
288815. A really picky compiler found some instances of statements for creating
2889 error messages that either had too many or two few arguments for the format
2890 string.
2891
289216. The size of the buffer for calls to the DNS resolver has been increased
2893 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2894 for addresses that have a lot of PTR records. This alleviates a problem; it
2895 does not fully solve it.
2896
289717. A dnsdb lookup for PTR records that receives more data than will fit in the
2898 buffer now truncates the list and logs the incident, which is the same
2899 action as happens when Exim is looking up a host name and its aliases.
2900 Previously in this situation something unpredictable would happen;
2901 sometimes it was "internal error: store_reset failed".
2902
290318. If a server dropped the connection unexpectedly when an Exim client was
2904 using GnuTLS and trying to read a response, the client delivery process
2905 crashed while trying to generate an error log message.
2906
290719. If a "warn" verb in an ACL added multiple headers to a message in a single
2908 string, for example:
2909
2910 warn message = H1: something\nH2: something
2911
2912 the text was added as a single header line from Exim's point of view
2913 though it ended up OK in the delivered message. However, searching for the
2914 second and subsequent header lines using $h_h2: did not work. This has been
2915 fixed. Similarly, if a system filter added multiple headers in this way,
2916 the routers could not see them.
2917
291820. Expanded the error message when iplsearch is called with an invalid key to
2919 suggest using net-iplsearch in a host list.
2920
292121. When running tests using -bh, any delays imposed by "delay" modifiers in
2922 ACLs are no longer actually imposed (and a message to that effect is
2923 output).
2924
292522. If a "gecos" field in a passwd entry contained escaped characters, in
2926 particular, if it contained a \" sequence, Exim got it wrong when building
2927 a From: or a Sender: header from that name. A second bug also caused
2928 incorrect handling when an unquoted " was present following a character
2929 that needed quoting.
2930
293123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2932 was not being matched caselessly.
2933
293424. Arranged for all hyphens in the exim.8 source to be escaped with
2935 backslashes.
2936
293725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2938 properly. Recipient callout cache records were still being keyed to include
2939 the sender, even when use_sender was set false. This led to far more
2940 callouts that were necessary. The sender is no longer included in the key
2941 when use_sender is false.
2942
294326. Added "control = submission" modifier to ACLs.
2944
294527. Added the ${base62d: operator to decode base 62 numbers.
2946
294728. dnsdb lookups can now access SRV records.
2948
294929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2950 the configuration file.
2951
295230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2953 (-v) mode. This makes the output for a verbose queue run more intelligible.
2954
295531. Added a use_postmaster feature to recipient callouts.
2956
295732. Added the $body_zerocount variable, containing the number of binary zero
2958 bytes in the message body.
2959
296033. The time of last modification of the "new" subdirectory is now used as the
2961 "mailbox time last read" when there is a quota error for a maildir
2962 delivery.
2963
296434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2965
296635. Added +ignore_unknown as a special item in host lists.
2967
296836. Code for decoding IPv6 addresses in host lists is now included, even if
2969 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2970 address was recognized as an IP address, but was then not correctly decoded
2971 into binary, causing unexpected and incorrect effects when compared with
2972 another IP address.
2973
2974
2975Exim version 4.34
2976-----------------
2977
2978 1. Very minor rewording of debugging text in manualroute to say "list of
2979 hosts" instead of "hostlist".
2980
2981 2. If verify=header_syntax was set, and a header line with an unqualified
2982 address (no domain) and a large number of spaces between the end of the
2983 name and the colon was received, the reception process suffered a buffer
2984 overflow, and (when I tested it) crashed. This was caused by some obsolete
2985 code that should have been removed. The fix is to remove it!
2986
2987 3. When running in the test harness, delay a bit after writing a bounce
2988 message to get a bit more predictability in the log output.
2989
2990 4. Added a call to search_tidyup() just before forking a reception process. In
2991 theory, someone could use a lookup in the expansion of smtp_accept_max_
2992 per_host which, without the tidyup, could leave open a database connection.
2993
2994 5. Added the variables $recipient_data and $sender_data which get set from a
2995 lookup success in an ACL "recipients" or "senders" condition, or a router
2996 "senders" option, similar to $domain_data and $local_part_data.
2997
2998 6. Moved the writing of debug_print from before to after the "senders" test
2999 for routers.
3000
3001 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3002 problems for message scanning, either using a data ACL, or using
3003 local_scan() because the Received: header was not generated till after they
3004 were called (in order to set the time as the time of reception completion).
3005 I have revised the way this works. The header is now generated after the
3006 body is received, but before the ACL or local_scan() are called. After they
3007 are run, the timestamp in the header is updated.
3008
3009
3010Exim version 4.33
3011-----------------
3012
3013 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3014 before starting a queue runner without re-exec. This happened only when
3015 deliver_drop_privilege was set or when the Exim user was set to root. The
3016 effect of the bug was that timeouts during subsequent deliveries caused
3017 crashes instead of being properly handled. The handler is now left at its
3018 default (and expected) setting.
3019
3020 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3021 message, again when deliver_drop_privilege is set or Exim is run as root.
3022 The bug described in (1) was not present in this case, but the tidying up
3023 of the other signals was missing. I have made the two cases consistent.
3024
3025 3. The ignore_target_hosts setting on a manualroute router was being ignored
3026 for hosts that were looked up using the /MX notation.
3027
3028 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3029 in domain lists.
3030
3031 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3032 operated on the sender address. After changing the $sender_address to <>
3033 for the sender address verify, Exim was re-instated it as the original
3034 (before rewriting) address, but remembering that it had rewritten it, so it
3035 wasn't rewriting it again. This bug also had the effect of breaking the
3036 sender address verification caching when the sender address was rewritten.
3037
3038 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3039 This has been changed so that if the ip literal address matches
3040 ignore_target_hosts, the router declines.
3041
3042 7. Added expansion conditions match_domain, match_address, and match_local_
3043 part (NOT match_host).
3044
3045 8. The placeholder for the Received: header didn't have a length field set.
3046
3047 9. Added code to Exim itself and to exim_lock to test for a specific race
3048 condition that could lead to file corruption when using MBX delivery. The
3049 issue is with the lockfile that is created in /tmp. If this file is removed
3050 after a process has opened it but before that process has acquired a lock,
3051 there is the potential for a second process to recreate the file and also
3052 acquire a lock. This could lead to two Exim processes writing to the file
3053 at the same time. The added code performs the same test as UW imapd; it
3054 checks after acquiring the lock that its file descriptor still refers to
3055 the same named file.
3056
305710. The buffer for building added header lines was of fixed size, 8192 bytes.
3058 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3059 when Exim is built.
3060
306111. Added the smtp_active_hostname option. If used, this will typically be made
3062 to depend on the incoming interface address. Because $interface_address is
3063 not set up until the daemon has forked a reception process, error responses
3064 that can happen earlier (such as "too many connections") no longer contain
3065 a host name.
3066
306712. If an expansion in a condition on a "warn" statement fails because a lookup
3068 defers, the "warn" statement is abandoned, and the next ACL statement is
3069 processed. Previously this caused the whole ACL to be aborted.
3070
307113. Added the iplsearch lookup type.
3072
307314. Added ident_timeout as a log selector.
3074
307515. Added tls_certificate_verified as a log selector.
3076
307716. Added a global option tls_require_ciphers (compare the smtp transport
3078 option of the same name). This controls incoming TLS connections.
3079
308017. I finally figured out how to make tls_require_ciphers do a similar thing
3081 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3082 before starting the TLS session.
3083
308418. Tabs are now shown as \t in -bP output.
3085
308619. If the log selector return_path_on_delivery was set, Exim crashed when
3087 bouncing a message because it had too many Received: header lines.
3088
308920. If two routers both had headers_remove settings, and the first one included
3090 a superfluous trailing colon, the final name in the first list and the
3091 first name in the second list were incorrectly joined into one item (with a
3092 colon in the middle).
3093
3094
3095Exim version 4.32
3096-----------------
3097
3098 1. Added -C and -D options to the exinext utility, mainly to make it easier
3099 to include in the automated testing, but these could be helpful when
3100 multiple configurations are in use.
3101
3102 2. The exinext utility was not formatting the output nicely when there was
3103 an alternate port involved in the retry record key, nor when there was a
3104 message id as well (for retries that were specific to a specific message
3105 and a specific host). It was also confused by IPv6 addresses, because of
3106 the additional colons they contain. I have fixed the IPv4 problem, and
3107 patched it up to do a reasonable job for IPv6.
3108
3109 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3110 delivery, the log line now contains "pipelined" if PIPELINING was used.
3111
3112 4. An SMTP transport process used to panic and die if the bind() call to set
3113 an explicit outgoing interface failed. This has been changed; it is now
3114 treated in the same way as a connect() failure.
3115
3116 5. A reference to $sender_host_name in the part of a conditional expansion
3117 that was being skipped was still causing a DNS lookup. This no longer
3118 occurs.
3119
3120 6. The def: expansion condition was not recognizing references to header lines
3121 that used bh_ and bheader_.
3122
3123 7. Added the _cache feature to named lists.
3124
3125 8. The code for checking quota_filecount in the appendfile transport was
3126 allowing one more file than it should have been.
3127
3128 9. For compatibility with Sendmail, the command line option
3129
3130 -prval:sval
3131
3132 is equivalent to
3133
3134 -oMr rval -oMs sval
3135
3136 and sets the incoming protocol and host name (for trusted callers). The
3137 host name and its colon can be omitted when only the protocol is to be set.
3138 Note the Exim already has two private options, -pd and -ps, that refer to
3139 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3140 "s", but I don't think that's a major issue.
3141
314210. A number of refactoring changes to the code, none of which should affect
3143 Exim's behaviour:
3144
3145 (a) The number of logging options was getting close to filling up the
3146 32-bit word that was used as a bit map. I have split them into two classes:
3147 those that are passed in the argument to log_write(), and those that are
3148 only ever tested independently outside of that function. These are now in
3149 separate 32-bit words, so there is plenty of room for expansion again.
3150 There is no change in the user interface or the logging behaviour.
3151
3152 (b) When building, for example, log lines, the code previously used a
3153 macro that called string_cat() twice, in order to add two strings. This is
3154 not really sufficiently general. Furthermore, there was one instance where
3155 it was actually wrong because one of the argument was used twice, and in
3156 one call a function was used. (As it happened, calling the function twice
3157 did not affect the overall behaviour.) The macro has been replaced by a
3158 function that can join an arbitrary number of extra strings onto a growing
3159 string.
3160
3161 (c) The code for expansion conditions now uses a table and a binary chop
3162 instead of a serial search (which was left over from when there were very
3163 few conditions). Also, it now recognizes conditions like "pam" even when
3164 the relevant support is not compiled in: a suitably worded error message is
3165 given if an attempt is made to use such a condition.
3166
316711. Added ${time_interval:xxxxx}.
3168
316912. A bug was causing one of the ddress fields not to be passed back correctly
3170 from remote delivery subprocesses. The field in question was not being
3171 subsequently used, so this caused to problems in practice.
3172
317313. Added new log selectors queue_time and deliver_time.
3174
317514. Might have fixed a bug in maildirsizefile handling that threw up
3176 "unexpected character" debug warnings, and recalculated the data
3177 unnecessarily. In any case, I expanded the warning message to give more
3178 information.
3179
318015. Added the message "Restricted characters in address" to the statements in
3181 the default ACL that block characters like @ and % in local parts.
3182
318316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3184 Three changes have been made:
3185
3186 (a) There was a serious bug; a negative response to MAIL caused the whole
3187 recipient domain to be cached as invalid, thereby blocking all messages
3188 to all local parts at the same domain, from all senders. This bug has
3189 been fixed. The domain is no longer cached after a negative response to
3190 MAIL if the sender used is not empty.
3191
3192 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3193 been restored.
3194
3195 (c) A new callout option, "use_sender" has been added for people who want
3196 the modified behaviour.
3197
3198
3199Exim version 4.31
3200-----------------
3201
3202 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3203 Larry Rosenman.
3204
3205 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3206 indeed breaks things for older releases.
3207
3208 3. Added additional logging to the case where there is a problem reading data
3209 from a filter that is running in a subprocess using a pipe, in order to
3210 try to track down a specific problem.
3211
3212 4. Testing facility fudge: when running in the test harness and attempting
3213 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3214 getting "No route to host". Convert this to a timeout.
3215
3216 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3217 warning.
3218
3219 6. Some OS don't have socklen_t but use size_t instead. This affects the
3220 fifth argument of getsockopt() amongst other things. This is now
3221 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3222 can be set for individual OS. I have set it for SunOS5, OSF1, and
3223 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3224 some earlier ones do not.
3225
3226 7. Change 4.30/15 was not doing the test caselessly.
3227
3228 8. The standard form for an IPv6 address literal was being rejected by address
3229 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3230 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3231 this, as well as the form without the "IPv6" on the front (but only when
3232 address literals are enabled, of course).
3233
3234 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3235
323610. Exim crashed if a message with an empty sender address specified by -f
3237 encountered a router with an errors_to setting. This could be provoked only
3238 by a command such as
3239
3240 exim -f "" ...
3241
3242 where an empty string was supplied; "<>" did not hit this bug.
3243
324411. Installed PCRE release 4.5.
3245
324612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3247 remained set. It is now erased.
3248
324913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3250 times from message ids (which are base 36 rather than the normal 62).
3251
325214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3253 were being counted as actual protocol errors, and logged if the log
3254 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3255 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3256 and DATA following a set of rejected RCPTs do not count as protocol errors.
3257 In other words, Exim assumes they were pipelined, though this may not
3258 actually be the case. Of course, in all cases the client gets an
3259 appropriate error code.
3260
326115. If a lookup fails in an ACL condition, a message about the failure may
3262 be available; it is used if testing the ACL cannot continue, because most
3263 such messages specify what the cause of the deferral is. However, some
3264 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3265 that caused an old message to be retained and used if a later statement
3266 caused a defer, replacing the real cause of the deferral.
3267
326816. If an IP address had so many PTR records that the DNS lookup buffer
3269 was not large enough to hold them, Exim could crash while trying to process
3270 the truncated data. It now detects and logs this case.
3271
327217. Further to 4.21/58, another change has been made: if (and only if) the
3273 first line of a message (the first header line) ends with CRLF, a bare LF
3274 in a subsequent header line has a space inserted after it, so as not to
3275 terminate the header.
3276
327718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3278 unnecessarily, used atoi() instead of strtol(), and didn't check the
3279 termination when getting file sizes from file names by regex.
3280
328119. Completely re-implemented the support for maildirsize files, in the light
3282 of a number of problems with the previous contributed implementation
3283 (4.30/29). In particular:
3284
3285 . If the quota is zero, the maildirsize file is maintained, but no quota is
3286 imposed.
3287
3288 . If the maildir directory does not exist, it is created before any attempt
3289 to write a maildirsize file.
3290
3291 . The quota value in the file is just a cache; if the quota is changed in
3292 the transport, the new value overrides.
3293
3294 . A regular expression is available for excluding directories from the
3295 count.
3296
329720. The autoreply transport checks the characters in options that define the
3298 message's headers; it allows continued headers, but it was checking with
3299 isspace() after an embedded newline instead of explicitly looking for a
3300 space or a tab.
3301
330221. If all the "regular" hosts to which an address was routed had passed their
3303 expiry times, and had not reached their retry times, the address was
3304 bounced, even if fallback hosts were defined. Now Exim should go on to try
3305 the fallback hosts.
3306
330722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3308 equivalent code in the SMTP transport. Some hosts send humungous responses
3309 to HELO/EHLO, more than 1024 it seems.
3310
331123. Refactoring: code in filter.c used (void *) for "any old type" but this
3312 gives compiler warnings in some environments. I've now done it "properly",
3313 using a union.
3314
331524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3316 (because of problems with the built-in one) was declared to return uschar *
3317 instead of char *, causing compiler failure.
3318
331925. Fixed a file descriptor leak when processing alias/forward files.
3320
332126. Fixed a minor format string issue in dbfn.c.
3322
332327. Typo in exim.c: ("dmbnz" for "dbmnz").
3324
332528. If a filter file refered to $h_xxx or $message_headers, and the headers
3326 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3327 become corrupted.
3328
332929. When a sender address is verified, it is cached, to save repeating the test
3330 when there is more than one recipient in a message. However, when the
3331 verification involves a callout, it is possible for different callout
3332 options to be set for different recipients. It is too complicated to keep
3333 track of this in the cache, so now Exim always runs a verification when a
3334 callout is required, relying on the callout cache for the optimization.
3335 The overhead is duplication of the address routing, but this should not be
3336 too great.
3337
333830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3339 to be verified with callout=postmaster, and the main callout worked but the
3340 postmaster check failed, the verification correctly failed. However, if a
3341 subsequent RCPT command asked for sender verification *without* the
3342 postmaster check, incorrect caching caused this verification also to fail,
3343 incorrectly.
3344
334531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3346 it was not caching the DNS options (qualify_single, search_parents) that
3347 were used when the lookup failed. A subsequent lookup with different
3348 options therefore always gave the same answer, though there were cases
3349 where it should not have. (Example: a "domains = !$mx_any" option on a
3350 dnslookup router: the "domains" option is always processed without any
3351 widening, but the router might have qualify_single set.) Now Exim uses the
3352 cached value only when the same options are set.
3353
335432. Added John Jetmore's "exipick" utility to the distribution.
3355
335633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3357 than a timeout (e.g. a certificate is required, and is not provided), an
3358 Exim server now closes the connection immediately. Previously it waited for
3359 the client to close - but if the client is SSL, it seems that they each
3360 wait for each other, leading to a delay before one of them times out.
3361
336234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3363 maintained 0.8.x compatibility because I don't think many are using it, and
3364 it is clearly obsolete.
3365
336635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3367 transport.
3368
336936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3370 client certificate was expired. A simple patch fixes this, though I don't
3371 understand the full logic of why the verify callback is called multiple
3372 times.
3373
337437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3375 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3376 which causes problems with some clients (such as the Certicom SSL Plus
3377 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3378 disables the coutermeasure allowing Eudora to connect."
3379
338038. Exim was not checking that a write() to a log file succeeded. This could
3381 lead to Bad Things if a log got too big, in particular if it hit a file
3382 size limit. Exim now panics and dies if it cannot write to a log file, just
3383 as it does if it cannot open a log file.
3384
338539. Modified OS/Makefile-Linux so that it now contains
3386
3387 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3388
3389 The two -D definitions ensure that Exim is compiled with large file
3390 support, which makes it possible to handle log files that are bigger than
3391 2^31.
3392
339340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3394 instance) a domain was checked against a named list that involved a lookup,
3395 causing $domain_data to be set, then another domain was checked against the
3396 same list, then the first domain was re-checked, the value of $domain_data
3397 after the final check could be wrong. In particular, if the second check
3398 failed, it could be set empty. This bug probably also applied to
3399 $localpart_data.
3400
340141. The strip_trailing_dot option was not being applied to the address given
3402 with the -f command-line option.
3403
340442. The code for reading a message's header from the spool was incrementing
3405 $received_count, but never initializing it. This meant that the value was
3406 incorrect (doubled) while delivering a message in the same process in which
3407 it was received. In the most common configuration of Exim, this never
3408 happens - a fresh exec is done - but it can happen when
3409 deliver_drop_privilege is set.
3410
341143. When Exim logs an SMTP synchronization error - client data sent too soon -
3412 it now includes up to 150 characters of the unexpected data in the log
3413 line.
3414
341544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3416 and building data strings. The size of both of these buffers was 10 000
3417 bytes - far larger than anybody would *ever* want, thought I. Needless to
3418 say, somebody hit the limit. I have increased the maximum line length to
3419 20 000 and the maximum data length of concatenated lines to 100 000. I have
3420 also fixed two bugs, because there was no checking on these buffers. Tsk,
3421 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3422 buffer is too small.
3423
342445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3425 lsearch lookups. Now it does.
3426
342746. When parsing a route_list item in a manualroute router, a fixed-length
3428 buffer was used for the list of hosts. I made this 1024 bytes long,
3429 thinking that nobody would ever have a list of hosts that long. Wrong.
3430 Somebody had a whole pile of complicated expansion conditions, and the
3431 string was silently truncated, leading to an expansion error. It turns out
3432 that it is easier to change to an unlimited length (owing to other changes
3433 that have happened since this code was originally written) than to build
3434 structure for giving a limitation error. The length of the item that
3435 expands into the list of hosts is now unlimited.
3436
343747. The lsearch lookup could not handle data where the length of text line was
3438 more than 4095 characters. Such lines were truncated, leading to shortened
3439 data being returned. It should now handle lines of any length.
3440
344148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3442 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3443 ACL").
3444
344549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3446 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3447 no longer happens in comment lines. A list of replacements is now placed
3448 at the head of all of the source files, except those whose only change is
3449 to replace PERL_COMMAND in the very first #! line.
3450
345150. Replaced the slow insertion sort in queue.c, for sorting the list of
3452 messages on the queue, with a bottom-up merge sort, using code contributed
3453 by Michael Haardt. This should make operations like -bp somewhat faster on
3454 large queues. It won't affect queue runners, except when queue_run_in_order
3455 is set.
3456
345751. Installed eximstats 1.31 in the distribution.
3458
345952. Added support for SRV lookups to the dnslookup router.
3460
346153. If an ACL referred to $message_body or $message_body_end, the value was not
3462 reset for any messages that followed in the same SMTP session.
3463
346454. The store-handling optimization for building very long strings was not
3465 differentiating between the different store pools. I don't think this
3466 actually made any difference in practice, but I've tidied it.
3467
346855. While running the routers to verify a sender address, $sender_address
3469 was still set to the sender address. This is wrong, because when routing to
3470 send a bounce to the sender, it would be empty. Therefore, I have changed
3471 it so that, while verifying a sender address, $sender_address is set to <>.
3472 (There is no change to what happens when verifying a recipient address.)
3473
347456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3475 target A or AAAA records (if not already returned) without resetting the
3476 qualify_single or search_parents options of the DNS resolver. These are
3477 inappropriate in this case because the targets of MX and SRV records must
3478 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3479 target that, when qualified, matched something in the local domain. These
3480 two options are now turned off when doing these lookups.
3481
348257. It seems that at least some releases of Reiserfs (which does not have the
3483 concept of a fixed number of inodes) returns zero and not -1 for the
3484 number of available inodes. This interacted badly with check_spool_inodes,
3485 which assumed that -1 was the "no such thing" setting. What I have done is
3486 to check that the total number of inodes is greater than zero before doing
3487 the test of how many are available.
3488
348958. When a "warn" ACL statement has a log_message modifier, the message is
3490 remembered, and not repeated. This is to avoid a lot of repetition when a
3491 message has many recipients that cause the same warning to be written.
3492 Howewer, Exim was preserving the list of already written lines for an
3493 entire SMTP session, which doesn't seem right. The memory is now reset if a
3494 new message is started.
3495
349659. The "rewrite" debugging flag was not showing the result of rewriting in the
3497 debugging output unless log_rewrite was also set.
3498
349960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3500 of (int)(handle) when we know that handle contains (void *)(-1).
3501
350261. The Exim daemon panic-logs an error return when it closes the incoming
3503 connection. However "connection reset by peer" seems to be common, and
3504 isn't really an error worthy of noting specially, so that particular error
3505 is no long logged.
3506
350762. When Exim is trying to find all the local interfaces, it used to panic and
3508 die if the ioctl to get the interface flags failed. However, it seems that
3509 on at least one OS (Solaris 9) it is possible to have an interface that is
3510 included in the list of interfaces, but for which you get a failure error
3511 for this call. This happens when the interface is not "plumbed" into a
3512 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3513 failure of the "get flags" call assumes that the interface is down.
3514
351563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3516 makes life easier for people who are doing arithmetic on fields extracted
3517 from dates, where you often get leading zeros that should not be
3518 interpreted as octal.
3519
352064. Added qualify_domain to the redirect router, to override the global
3521 setting.
3522
352365. If a pathologically long header line contained very many addresses (the
3524 report of this problem mentioned 10 000) and each of them was rewritten,
3525 Exim could use up a very large amount of memory. (It kept on making new
3526 copies of the header line as it rewrote, and never released the old ones.)
3527 At the expense of a bit more processing, the header rewriting function has
3528 been changed so that it no longer eats memory in this way.
3529
353066. The generation of the Received: header has been moved from the time that a
3531 message starts to be received, to the time that it finishes. The timestamp
3532 in the Received: header should now be very close to that of the <= log
3533 line. There are two side-effects of this change:
3534
3535 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3536 logged header lines no longer include the local Received: line, because
3537 it has not yet been created. The same applies to a copy of the message
3538 that is returned to a non-SMTP sender when a message is rejected.
3539
3540 (b) When a filter file is tested using -bf, no additional Received: header
3541 is added to the test message. After some thought, I decided that this
3542 is a bug fix.
3543
3544 This change does not affect the value of $received_for. It is still set
3545 after address rewriting, but before local_scan() is called.
3546
354767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3548
354968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3550 gave an unhelpful panic error message, and a defer error. I have managed to
3551 change this behaviour so that it now rejects any supplied certificate,
3552 which seems right, as the list of acceptable certificates is empty.
3553
355469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3555 gave an unhelpful defer error. I have not managed to make this reject any
3556 supplied certificates, but the error message it gives is "no certificate
3557 supplied", which is not helpful.
3558
355970. exigrep's output now also includes lines that are not associated with any
3560 message, but which match the given pattern. Implemented by a patch from
3561 Martin Sluka, which also tidied up the Perl a bit.
3562
356371. Recipient callout verification, like sender verification, was using <> in
3564 the MAIL FROM command. This isn't really the right thing, since the actual
3565 sender may affect whether the remote host accepts the recipient or not. I
3566 have changed it to use the actual sender in the callout; this means that
3567 the cache record is now keyed on a recipient/sender pair, not just the
3568 recipient address. There doesn't seem to be a real danger of callout loops,
3569 since a callout by the remote host to check the sender would use <>.
3570 [SEE ABOVE: changed after hitting problems.]
3571
357272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3573 temporary errors. However, in the case of such a code being given after
3574 the end of a data transmission (i.e. after ".") Exim was failing to write
3575 a retry record for the message. (Yes, there was some broken host that was
3576 actually sending 8xx at this point.)
3577
357873. An unknown lookup type in a host list could cause Exim to panic-die when
3579 the list was checked. (An example that provoked this was putting <; in the
3580 middle of a list instead of at the start.) If this happened during a DATA
3581 ACL check, a -D file could be left lying around. This kind of configuration
3582 error no longer causes Exim to die; instead it causes a defer errror. The
3583 incident is still logged to the main and panic logs.
3584
358574. Buglet left over from Exim 3 conversion. The message "too many messages
3586 in one connection" was written to the rejectlog but not the mainlog, except
3587 when address rewriting (yes!) was being logged.
3588
358975. Added write_rejectlog option.
3590
359176. When a system filter was run not as root (that is, when system_filter_user
3592 was set), the values of the $n variables were not being returned to the
3593 main process; thus, they were not subsequently available in the $sn
3594 variables.