Nico Erfurth's patch to use less resources in spool_read_header,
[exim.git] / doc / doc-txt / ChangeLog
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08955dd3 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.405 2006/10/10 11:15:12 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
TF
6Exim version 4.64
7-----------------
8
9TF/01 In the add_headers option to the mail command in an Exim filter,
10 there was a bug that Exim would claim a syntax error in any
11 header after the first one which had an odd number of characters
12 in the field name.
13
2b1c6e3a
PH
14PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
15 callout verification, Exim cached a "reject" for the entire domain. This
16 is correct for most verifications, but it is not correct for a recipient
17 verification with use_sender or use_postmaster set, because in that case
18 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
19 case of MAIL FROM:<> rejection from other early rejections (e.g.
20 rejection of HELO). When verifying a recipient using a non-null MAIL
21 address, the cache is ignored if it shows MAIL FROM:<> rejection.
22 Whatever the result of the callout, the value of the domain cache is
23 left unchanged (for any other kind of callout, getting as far as trying
24 RCPT means that the domain itself is ok).
25
1f872c80
PH
26PH/02 Tidied a number of unused variable and signed/unsigned warnings that
27 gcc 4.1.1 threw up.
28
29PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
30 manifest itself as EPIPE rather than ECONNECT. When tidying away a
31 session, the daemon ignores ECONNECT errors and logs others; it now
32 ignores EPIPE as well.
33
d203e649
PH
34PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
35 (quoted-printable decoding).
36
cc2ed8f7 37PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 38 later the small subsequent patch to fix an introduced bug.
f951fd57 39
ddfcd446
PH
40PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
41
d45b1de8
PH
42PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
43
44PH/08 An error is now given if message_size_limit is specified negative.
45
38a0a95f 46PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 47 to be given (somewhat) arbitrary names.
38a0a95f 48
a2405d83
JJ
49JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
50 in 4.64-PH/09.
51
52JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
53 miscellaneous code fixes
54
6ea85e9a
PH
55PH/10 Added the log_reject_target ACL modifier to specify where to log
56 rejections.
57
26da7e20
PH
58PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
59 hostname. This is wrong, because it relates to the incoming message (and
60 probably the interface on which it is arriving) and not to the outgoing
61 callout (which could be using a different interface). This has been
62 changed to use the value of the helo_data option from the smtp transport
63 instead - this is what is used when a message is actually being sent. If
64 there is no remote transport (possible with a router that sets up host
65 addresses), $smtp_active_hostname is used.
6ea85e9a 66
14aa5a05
PH
67PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
68 tweaks were necessary in order to get it to work:
69 (a) The code assumed that strncpy() returns a negative number on buffer
70 overflow, which isn't the case. Replaced with Exim's string_format()
71 function.
72 (b) There were several signed/unsigned issues. I just did the minimum
73 hacking in of casts. There is scope for a larger refactoring.
74 (c) The code used strcasecmp() which is not a standard C function.
75 Replaced with Exim's strcmpic() function.
76 (d) The code set only $1; it now sets $auth1 as well.
77 (e) A simple test gave the error "authentication client didn't specify
78 service in request". It would seem that Dovecot has changed its
79 interface. Fortunately there's a specification; I followed it and
80 changed what the client sends and it appears to be working now.
81
ff75a1f7
PH
82PH/13 Added $message_headers_raw to provide the headers without RFC 2047
83 decoding.
84
e6f6568e
PH
85PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
86 address A is aliased to B and C, where B exists and C does not. Without
87 -v the output is "A verified" because verification stops after a
88 successful redirection if more than one address is generated. However,
89 with -v the child addresses are also verified. Exim was outputting "A
90 failed to verify" and then showing the successful verification for C,
91 with its parentage. It now outputs "B failed to verify", showing B's
92 parentage before showing the successful verification of C.
93
d6f6e0dc
PH
94PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
95 look up a TXT record in a specific list after matching in a combined
96 list.
97
322050c2
PH
98PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
99 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
100 they consult the DNS. I had assumed they would set it the way they
101 wanted; and indeed my experiments on Linux seem to show that in some
102 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
103 To be on the safe side, however, I have now made the interface to
104 host_find_byname() similar to host_find_bydns(), with an argument
105 containing the DNS resolver options. The host_find_byname() function now
106 sets these options at its start, just as host_find_bydns() does. The smtp
107 transport options dns_qualify_single and dns_search_parents are passed to
108 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
109 of host_find_byname() use the default settings of RES_DEFNAMES
110 (qualify_single) but not RES_DNSRCH (search_parents).
111
08955dd3
PH
112PH/17 Applied (a modified version of) Nico Erfurth's patch to make
113 spool_read_header() do less string testing, by means of a preliminary
114 switch on the second character of optional "-foo" lines. (This is
115 overdue, caused by the large number of possibilities that now exist.
116 Originally there were few.) While I was there, I also converted the
117 str(n)cmp tests so they don't re-test the leading "-" and the first
118 character, in the hope this might squeeze out yet more improvement.
119
944e9e9c 120
478be7b0
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121Exim version 4.63
122-----------------
123
124SC/01 Use a glob alias rather than an array ref in eximstats generated
125 parser. This improves both readability and performance.
126
127SC/02 Collect SpamAssassin and rejection statistics in eximstats.
128 Don't display local sender or destination tables in eximstats unless
129 there is data to show.
130 Added average volumes into the eximstats top table text output.
131
132SC/03 Collect data on the number of addresses (recipients) as well
133 as the number of messages in eximstats.
134
2b965a65
TF
135TF/01 Correct an error in the documentation for the redirect router. Exim
136 does (usually) call initgroups() when daemonizing.
478be7b0 137
45b91596
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138TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
139 with consistent privilege compared to when running as a daemon.
478be7b0 140
c59f5781
TF
141TF/03 Note in the spec that $authenticated_id is not set for local
142 submissions from trusted users.
143
90fc3069
TF
144TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
145 Thanks to Dean Brooks <dean@iglou.com> for the patch.
146
6083aca0
TF
147TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
148 by adding some example configuration directives to the default
149 configuration file. A little bit of work is required to uncomment the
150 directives and define how usernames and passwords are checked, but
151 there is now a framework to start from.
152
765b530f
PH
153PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
154 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
155 without this. I don't know how relevant this is to other LDAP libraries.
156
4e167a8c
PH
157PH/02 Add the verb name to the "unknown ACL verb" error.
158
4608d683
PH
159PH/03 Magnus Holmgren's patch for filter_prepend_home.
160
b8dc3e4a
PH
161PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
162
5418e93b
PH
163PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
164 directory not expanded when it should be if an expanded home directory
165 was set for the address (which is overridden by the transport).
166
b4a9bda2
PH
167PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
168 libradius.
169
45b91596
PH
170PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
171 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
172 because it is too late at that time, and has no effect.
173
5547e2c5
PH
174PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
175 security issue with \' (bugzilla #107). I could not use the
176 PQescapeStringConn() function, because it needs a PGconn value as one of
177 its arguments.
178
dbcef0ea
PH
179PH/08 When testing addresses using -bt, indicate those final addresses that
180 are duplicates that would not cause an additional delivery. At least one
181 person was confused, thinking that -bt output corresponded to deliveries.
182 (Suppressing duplicates isn't a good idea as you lose the information
183 about possibly different redirections that led to the duplicates.)
184
25257489
PH
185PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
186 systems where poll() doesn't work, in particular OS X.
187
c816d124
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188PH/10 Added more information to debugging output for retry time not reached.
189
a9ccd69a
PH
190PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
191 operations in malware.c.
192
75fa1910
PH
193PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
194 signatures.
195
a7d7aa58
PH
196PH/13 If write_rejectlog was set false when logging was sent to syslog with
197 syslog_duplication set false, log lines that would normally be written
198 both the the main log and to the reject log were not written to syslog at
199 all.
200
42119b09
PH
201PH/14 In the default configuration, change the use of "message" in ACL warn
202 statements to "add_header".
203
41609df5
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204PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
205 not followed by a command (e.g. "seen endif").
206
a5bd321b
PH
207PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
208 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
209 latter.
210
e85a7ad5 211PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
212 so that it is now:
213
e85a7ad5
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214 ${if or { \
215 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
216 { match{$h_precedence:}{(?i)bulk|list|junk} } \
217 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
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218 }{no}{yes}}
219
e85a7ad5
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220 The Auto-Submitted: and various List- headers are standardised, whereas I
221 don't think Precedence: ever was.
5dff5817 222
d8fe1c03
PH
223PH/18 Refactored debugging code in route_finduser() to show more information,
224 in particular, the error code if getpwnam() issues one.
225
16282d2b
PH
226PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
227 This is apparently needed in addition to the PH/07 change above to avoid
228 any possible encoding problems.
229
35d40a98
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230PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
231 but not after initializing Perl.
232
034d99ab
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233PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
234 output them only if debugging. By default they are written stderr,
235 apparently, which is not desirable.
236
6ec97b1b
PH
237PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
238 queries.
239
e22ca4ac
JJ
240JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
241 --not options
242
243JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
244
33d73e3b
PH
245PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
246 authenticated or an ident call has been made. Suppress the default
247 values for $authenticated_id and $authenticated_sender (but permit -oMai
248 and -oMas) when testing with -bh.
249
9ecb03f3
PH
250PH/24 Re-jigged the order of the tests in the default configuration so that the
251 tests for valid domains and recipients precede the DNS black list and CSA
252 tests, on the grounds that those ones are more expensive.
253
084efe8d
PH
254PH/25 Exim was not testing for a space following SMTP commands such as EHLO
255 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
256 This bug exists in every version of Exim that I still have, right back to
257 0.12.
258
366fc9f0
PH
259PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
260 However, an attempt to turn on case-sensitivity in a regex key by
261 including (?-i) didn't work because the subject string was already
262 lowercased, and the effects were non-intuitive. It turns out that a
263 one-line patch can be used to allow (?-i) to work as expected.
264
c59f5781 265
c887c79e
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266Exim version 4.62
267-----------------
268
269TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
270 other effects) broke the use of negated acl sub-conditions.
271
1cce3af8
PH
272PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
273 patch).
274
afb3eaaf
PH
275PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
276 "Deny" causes Exim to reject the incoming connection with a 554 error.
277 Unfortunately, if there is a major crisis, such as a disk failure,
278 tcp-wrappers gives "deny", whereas what one would like would be some
279 kind of temporary error. A kludge has been added to help with this.
280 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
281 554 error is used if errno is still zero or contains ENOENT (which occurs
282 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
283 451 error is used.
284
e173618b
PH
285PH/03 Add -lutil to the default FreeBSD LIBS setting.
286
dd16e114
PH
287PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
288 errors. Otherwise a message that provokes a temporary error (when other
289 messages do not) can cause a whole host to time out.
290
f7fd3850
PH
291PH/05 Batch deliveries by appendfile and pipe transports did not work when the
292 addresses were routed directly to files or pipes from a redirect router.
293 File deliveries just didn't batch; pipe deliveries might have suffered
294 odd errors.
295
d87df92c
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296PH/06 A failure to get a lock for a hints database would erroneously always say
297 "Failed to get write lock", even when it was really a read lock.
298
7e9f683d
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299PH/07 The appendfile transport was creating MBX lock files with a fixed mode
300 of 0600. This has been changed to use the value of the lockfile_mode
301 option (which defaults to 0600).
302
bfad5236
PH
303PH/08 Applied small patch from the Sieve maintainer.
304
01c490df
PH
305PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
306 folder from quota calculations, a direct delivery into this folder messed
307 up the contents of the maildirsize file. This was because the regex was
308 used only to exclude .Trash (or whatever) when the size of the mailbox
309 was calculated. There was no check that a delivery was happening into an
310 excluded directory. This bug has been fixed by ignoring all quota
311 processing for deliveries into excluded directories.
312
d6629cdc
PH
313PH/10 Added the maildirfolder_create_regex option to appendfile.
314
1cce3af8 315
214e2000
PH
316Exim version 4.61
317-----------------
318
319PH/01 The code for finding all the local interface addresses on a FreeBSD
320 system running IPv6 was broken. This may well have applied to all BSD
321 systems, as well as to others that have similar system calls. The broken
322 code found IPv4 interfaces correctly, but gave incorrect values for the
323 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
324 that it would not match correctly against @[] and not recognize the IPv6
325 addresses as local.
326
f9daeae0
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327PH/02 The ipliteral router was not recognizing addresses of the form user@
328 [ipv6:....] because it didn't know about the "ipv6:" prefix.
329
7e66e54d
PH
330PH/03 Added disable_ipv6.
331
c8ea1597
PH
332PH/04 Changed $reply_address to use the raw form of the headers instead of the
333 decoded form, because it is most often used to construct To: headers
334 lines in autoreplies, and the decoded form may well be syntactically
335 invalid. However, $reply_address has leading white space removed, and all
336 newlines turned into spaces so that the autoreply transport does not
337 grumble.
338
911f6fde
PH
339PH/05 If group was specified without a user on a router, and no group or user
340 was specified on a transport, the group from the router was ignored.
341
47ca6d6c
PH
342PH/06 Increased the number of ACL variables to 20 of each type, and arranged
343 for visible compile-time settings that can be used to change these
344 numbers, for those that want even more. Backwards compatibility with old
345 spool files has been maintained. However, going back to a previous Exim
346 release will lost any variables that are in spool files.
347
ed0e9820
PH
348PH/07 Two small changes when running in the test harness: increase delay when
349 passing a TCP/IP connection to a new process, in case the original
350 process has to generate a bounce, and remove special handling of
351 127.0.0.2 (sic), which is no longer necessary.
352
eff37e47
PH
353PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
354 be the same on different OS.
355
1921d2ea
PH
356PH/09 Moved a debug statement in filter processing to avoid a race problem when
357 testing.
358
b3f69ca8
JJ
359JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
360 whether --show-vars was specified or not
361
362JJ/02 exipick: Added support for new ACL variable spool format introduced
363 in 4.61-PH/06
364
424a1c63
PH
365PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
366 syntactically invalid From: or Reply-to: line, and a filter used this to
367 generate an autoreply, and therefore failed to obtain an address for the
368 autoreply, Exim could try to deliver to a non-existent relative file
369 name, causing unrelated and misleading errors. What now happens is that
370 it logs this as a hard delivery error, but does not attempt to create a
371 bounce message.
372
7a100415
PH
373PH/11 The exinext utility has a -C option for testing purposes, but although
374 the given file was scanned by exinext itself; it wasn't being passed on
375 when Exim was called.
376
19b9dc85
PH
377PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
378 an end-of-file indication when reading a command response.
379
309bd837
PH
380PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
381 compiled. In many other places in Exim, IPv6 addresses are always
382 recognized, so I have changed this. It also means that IPv4 domain
383 literals of the form [IPV4:n.n.n.n] are now always recognized.
384
59e82a2a
PH
385PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
386 used if the router is not running as root, for example, when verifying at
387 ACL time, or when using -bh. The debugging output from this situation was
388 non-existent - all you got was a failure to exec. I have made two
389 changes:
390
391 (a) Failures to set uid/gid, the current directory, or a process leader
392 in a subprocess such as that created by queryprogram now generate
393 suitable debugging ouput when -d is set.
394
395 (b) The queryprogram router detects when it is not running as root,
396 outputs suitable debugging information if -d is set, and then runs
397 the subprocess without attempting to change uid/gid.
398
9edc04ce
PH
399PH/15 Minor change to Makefile for building test_host (undocumented testing
400 feature).
401
1349e1e5
PH
402PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
403 additional section of a DNS packet that returns MX or SRV records.
404 Instead, it always explicitly searches for A/AAAA records. This avoids
405 major problems that occur when a DNS server includes only records of one
406 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
407 fixed another bug: if SRV records were looked up and the corresponding
408 address records were *not* found in the additional section, the port
409 values from the SRV records were lost.
410
ea49d0e1
PH
411PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
412 using the correct key (the original address) when searching the retry
413 rules in order to find which one to use for generating the retry hint.
414
064a94c9
PH
415PH/18 If quota_warn_message contains a From: header, Exim now refrains from
416 adding the default one. Similarly, if it contains a Reply-To: header, the
417 errors_reply_to option, if set, is not used.
418
727071f8
PH
419PH/19 When calculating a retry time, Exim used to measure the "time since
420 failure" by looking at the "first failed" field in the retry record. Now
421 it does not use this if it is later than than the arrival time of the
422 message. Instead it uses the arrival time. This makes for better
423 behaviour in cases where some deliveries succeed, thus re-setting the
424 "first failed" field. An example is a quota failure for a huge message
425 when small messages continue to be delivered. Without this change, the
426 "time since failure" will always be short, possible causing more frequent
427 delivery attempts for the huge message than are intended.
dd16e114 428 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 429
f78eb7c6
PH
430PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
431 $1, $2, $3) because the numerical variables can be reset during some
432 expansion items (e.g. "match"), thereby losing the authentication data.
433
21c28500
PH
434PH/21 Make -bV show the size of off_t variables so that the test suite can
435 decide whether to run tests for quotas > 2G.
436
437PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
438 mailbox_size, and mailbox_filecount in the appendfile transport. If a
439 filecount value is greater than 2G or if a quota value is greater than 2G
440 on a system where the size of off_t is not greater than 4, a panic error
441 is given.
442
1688f43b
PH
443PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
444 never match. The debug and -bh output now contains an explicit error
445 message indicating a malformed IPv4 address or mask.
446
447PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
448 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
449 PH/23 above applies.
450
9675b384
PH
451PH/25 Do not write to syslog when running in the test harness. The only
452 occasion when this arises is a failure to open the main or panic logs
453 (for which there is an explicit test).
454
6a3f1455
PH
455PH/26 Added the /no_tell option to "control=freeze".
456
dac79d3e
PH
457PH/27 If a host name lookup failed very early in a connection, for example, if
458 the IP address matched host_lookup and the reverse lookup yielded a name
459 that did not have a forward lookup, an error message of the form "no IP
460 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
461 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 462
5977a0b3
PH
463PH/28 An enabling patch from MH: add new function child_open_exim2() which
464 allows the sender and the authenticated sender to be set when
465 submitting a message from within Exim. Since child_open_exim() is
466 documented for local_scan(), the new function should be too.
467
c91535f3
PH
468PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
469 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
470 results in an empty string is now treated as unset.
471
0d46a8c8
PH
472PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
473
278c6e6c
PH
474PH/31 Added sender_verify_fail logging option.
475
2cbb4081
PH
476PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
477 needed by RFC 822 but not by RFC 2822 was commented out. I have now
478 tidied the source and removed it altogether.
479
3eef829e
PH
480PH/33 When a queue run was abandoned because the load average was too high, a
481 log line was always written; now it is written only if the queue_run log
482 selector is set. In addition, the log line for abandonment now contains
483 information about the queue run such as the pid. This is always present
484 in "start" and "stop" lines but was omitted from the "abandon" line.
485
1ab95fa6
PH
486PH/34 Omit spaces between a header name and the colon in the error message that
487 is given when verify = headers_syntax fails (if there are lots of them,
488 the message gets confusing).
489
230205fc
PH
490PH/35 Change the default for dns_check_names_pattern to allow slashes within
491 names, as there are now some PTR records that contain slashes. This check
492 is only to protect against broken name servers that fall over on strange
493 characters, so the fact that it applies to all lookups doesn't matter.
494
75e0e026
PH
495PH/36 Now that the new test suite is complete, we can remove some of the
496 special code in Exim that was needed for the old test suite. For example,
497 sorting DNS records because real resolvers return them in an arbitrary
498 order. The new test suite's fake resolver always returns records in the
499 same order.
500
501PH/37 When running in the test harness, use -odi for submitted messages (e.g.
502 bounces) except when queue_only is set, to avoid logging races between
503 the different processes.
504
145396a6
PH
505PH/38 Panic-die if .include specifies a non-absolute path.
506
3cd34f13
PH
507PH/39 A tweak to the "H" retry rule from its user.
508
11121d3d
JJ
509JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
510 a label. They prevented compilation on older perls.
511
512JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
513 a warning to be raised on newish perls.
514
515JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
516 on queue. Changes to match documented behaviour of showing count of
517 messages matching specified criteria.
518
8def5aaf
PH
519PH/40 Changed the default ident timeout from 30s to 5s.
520
929ba01c
PH
521PH/41 Added support for the use of login_cap features, on those BSD systems
522 that have them, for controlling the resources used by pipe deliveries.
523
2632889e
PH
524PH/42 The content-scanning code uses fopen() to create files in which to put
525 message data. Previously it was not paying any attention to the mode of
526 the files. Exim runs with umask(0) because the rest of the code creates
527 files with open(), and sets the required mode explicitly. Thus, these
528 files were ending up world-writeable. This was not a big issue, because,
529 being within the spool directory, they were not world-accessible. I have
530 created a function called modefopen, which takes an additional mode
531 argument. It sets umask(777), creates the file, chmods it to the required
532 mode, then resets the umask. All the relevant calls to fopen() in the
533 content scanning code have been changed to use this function.
534
944a9c55
PH
535PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
536 to 24 hours. This avoids potential overflow problems when processing G
537 and H retry rules. I suspect nobody ever tinkers with this value.
538
4a23603b
PH
539PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
540
4730f942
PH
541PH/45 When the plaintext authenticator is running as a client, the server's
542 challenges are checked to ensure they are valid base64 strings. By
543 default, the authentication attempt is cancelled if an invalid string is
544 received. Setting client_ignore_invalid_base64 true ignores these errors.
545 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
546 they are received. Thus, the responses can be made to depend on the
547 challenges. If an invalid string is ignored, an empty string is placed in
548 the variable.
549
30dba1e6
PH
550PH/46 Messages that are created by the autoreply transport now contains a
551 References: header, in accordance with RFCs 2822 and 3834.
552
382afc6b
PH
553PH/47 Added authenticated_sender_force to the smtp transport.
554
a86229cf
PH
555PH/48 The ${prvs expansion was broken on systems where time_t was long long.
556
50c99ba6
PH
557PH/49 Installed latest patch from the Sieve maintainer.
558
d35e429d
PH
559PH/50 When an Exim quota was set without a file count quota, and mailbox_size
560 was also set, the appendfile transport was unnecessarily scanning a
561 directory of message files (e.g. for maildir delivery) to find the count
562 of files (along with the size), even though it did not need this
563 information. It now does the scan only if it needs to find either the
564 size of the count of files.
565
f90d018c
PH
566PH/51 Added ${time_eval: to convert Exim time strings into seconds.
567
75def545
PH
568PH/52 Two bugs concerned with error handling when the smtp transport is
569 used in LMTP mode:
570
571 (i) Exim was not creating retry information for temporary errors given
572 for individual recipients after the DATA command when the smtp transport
573 was used in LMTP mode. This meant that they could be retried too
574 frequently, and not timed out correctly.
575
576 (ii) Exim was setting the flag that allows error details to be returned
577 for LMTP errors on RCPT commands, but not for LMTP errors for individual
578 recipients that were returned after the DATA command.
579
580PH/53 This is related to PH/52, but is more general: for any failing address,
581 when detailed error information was permitted to be returned to the
582 sender, but the error was temporary, then after the final timeout, only
583 "retry timeout exceeded" was returned. Now it returns the full error as
584 well as "retry timeout exceeded".
585
c46782ef
PH
586PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
587 do this, and (what is worse) MTAs that accept it.
588
71fafd95
PH
589PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
590 will now be deprecated.
591
2c5db4fd
PH
592PH/56 New os.c-cygwin from the Cygwin maintainer.
593
9cf6b11a
JJ
594JJ/06 exipick: added --unsorted option to allow unsorted output in all output
595 formats (previously only available in exim formats via -bpr, -bpru,
596 and -bpra. Now also available in native and exiqgrep formats)
597
598JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
599 with very large, slow to parse queues
600
601JJ/08 exipick: added ! as generic prefix to negate any criteria format
602
603JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
604
898d150f
PH
605PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
606 responses to authentication challenges, though it was showing the
607 challenges; (ii) I've removed the CR characters from the debug output for
608 SMTP output lines.
609
46218253
PH
610PH/58 Allow for the insertion of a newline as well as a space when a string
611 is turned into more than one encoded-word during RFC 2047 encoding. The
612 Sieve code now uses this.
613
e97957bc
PH
614PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
615 data_4xx, lost_connection, tls_required.
616
81e509d7
PH
617PH/60 When a VRFY deferred or FAILED, the log message rather than the user
618 message was being sent as an SMTP response.
619
3d240ff7
PH
620PH/61 Add -l and -k options to exicyclog.
621
b37c4101
PH
622PH/62 When verifying, if an address was redirected to one new address, so that
623 verification continued, and the new address failed or deferred after
624 having set something in $address_data, the value of $address_data was not
625 passed back to the ACL. This was different to the case when no
626 redirection occurred. The value is now passed back in both cases.
627
79378e0f
PH
628PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
629 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
630 use login_cap.h, so on its own it isn't the distinguishing feature. The
631 new name refers directly to the setclassresources() function.
632
e49c7bb4
PH
633PH/65 Added configuration files for NetBSD3.
634
d114ec46
PH
635PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
636
f3d7df6c
PH
637PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
638 is preferred over IPv4.
639
715ab376
PH
640PH/68 The bounce_return_message and bounce_return_body options were not being
641 honoured for bounces generated during the reception of non-SMTP messages.
642 In particular, this applied to messages rejected by the ACL. This bug has
643 been fixed. However, if bounce_return_message is true and bounce_return_
644 body is false, the headers that are returned for a non-SMTP message
645 include only those that have been read before the error was detected.
646 (In the case of an ACL rejection, they have all been read.)
647
6b31b150
PH
648PH/69 The HTML version of the specification is now built in a directory called
649 spec_html instead of spec.html, because the latter looks like a path with
650 a MIME-type, and this confuses some software.
651
652PH/70 Catch two compiler warnings in sieve.c.
653
d515a917
PH
654PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
655 function verify_get_ident() calls ip_connect() to connect a socket, but
656 if the "connect()" function timed out, ip_connect() used to close the
657 socket. However, verify_get_ident() also closes the socket later, and in
658 between Exim writes to the log, which may get opened at this point. When
659 the socket was closed in ip_connect(), the log could get the same file
660 descriptor number as the socket. This naturally causes chaos. The fix is
661 not to close the socket in ip_connect(); the socket should be closed by
662 the function that creates it. There was only one place in the code where
663 this was missing, in the iplookup router, which I don't think anybody now
664 uses, but I've fixed it anyway.
665
9b8fadde
PH
666PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
667 well as to direct DNS lookups. Otherwise the handling of names in host
668 lists is inconsistent and therefore confusing.
669
214e2000 670
5de37277
PH
671Exim version 4.60
672-----------------
673
cc38ddbf
PH
674PH/01 Two changes to the default runtime configuration:
675
676 (1) Move the checks for relay_from_hosts and authenticated clients from
677 after to before the (commented out) DNS black list checks.
678
679 (2) Add control=submission to the relay_from_hosts and authenticated
680 clients checks, on the grounds that messages accepted by these
681 statements are most likely to be submissions.
5de37277 682
72fdd6ae
PH
683PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
684
685 (1) Generate an error if the third argument for the ${prvs expansion is
686 not a single digit.
687
688 (2) Treat a missing third argument of ${prvscheck as if it were an empty
689 string.
690
691 (3) Reset the variables that are obtained from the first argument of
692 ${prvscheck and used in the second argument before leaving the code,
693 because their memory is reclaimed, so using them afterwards may do
694 silly things.
695
696 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
697 one (it's much easier than Tom thought :-).
698
699 (5) Because of (4), we can now allow for the use of $prvscheck_result
700 inside the third argument.
cb9328de 701
cb741023
PH
702PH/03 For some reason, the default setting of PATH when running a command from
703 a pipe transport was just "/usr/bin". I have changed it to
704 "/bin:/usr/bin".
705
f174f16e
PH
706PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
707 anything to be listed in the output from -bV.
b2f5a032 708
c25242d7
PH
709PH/05 When a filter generated an autoreply, the entire To: header line was
710 quoted in the delivery log line, like this:
711
712 => >A.N.Other <ano@some.domain> <original@ddress> ...
713
714 This has been changed so that it extracts the operative address. There
715 may be more than one such address. If so, they are comma-separated, like
716 this:
717
718 => >ano@some.domain,ona@other.domain <original@ddress> ...
719
82c19f95
PH
720PH/06 When a client host used a correct literal IP address in a HELO or EHLO
721 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
722 not being looked up in the rDNS to get a host name, Exim was showing the
723 IP address twice in Received: lines, even though the IP addresses were
724 identical. For example:
725
726 Received: from [1.2.3.4] (helo=[1.2.3.4])
727
728 However, if the real host name was known, it was omitting the HELO data
729 if it matched the actual IP address. This has been tidied up so that it
730 doesn't show the same IP address twice.
731
d7ffbc12
PH
732PH/07 When both +timestamp and +memory debugging was on, the value given by
733 $tod_xxx expansions could be wrong, because the tod_stamp() function was
734 called by the debug printing, thereby overwriting the timestamp buffer.
735 Debugging no longer uses the tod_stamp() function when +timestamp is set.
736
9f526266
PH
737PH/08 When the original message was included in an autoreply transport, it
738 always said "this is a copy of the message, including all the headers",
739 even if body_only or headers_only was set. It now gives an appropriate
740 message.
741
87fcc8b9
PH
742PH/09 Applied a patch from the Sieve maintainer which:
743
744 o fixes some comments
745 o adds the (disabled) notify extension core
746 o adds some debug output for the result of if/elsif tests
747 o points to the current vacation draft in the documentation
748 and documents the missing references header update
749
750 and most important:
751
752 o fixes a bug in processing the envelope test (when testing
753 multiple envelope elements, the last element determinted the
754 result)
755
456682f5
PH
756PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
757 Electronic Mail") by including:
758
759 Auto-submitted: auto-generated
760
761 in the messages that it generates (bounce messages and others, such as
762 warnings). In the case of bounce messages for non-SMTP mesages, there was
763 also a typo: it was using "Auto_submitted" (underscore instead of
764 hyphen). Since every message generated by Exim is necessarily in response
765 to another message, thes have all been changed to:
766
767 Auto-Submitted: auto-replied
768
769 in accordance with these statements in the RFC:
770
771 The auto-replied keyword:
772
773 - SHOULD be used on messages sent in direct response to another
774 message by an automatic process,
775
776 - MUST NOT be used on manually-generated messages,
777
778 - MAY be used on Delivery Status Notifications (DSNs) and Message
779 Disposition Notifications (MDNs),
780
781 - MUST NOT be used on messages generated by automatic or periodic
782 processes, except for messages which are automatic responses to
783 other messages.
784
3e46c1aa
PH
785PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
786 to the default Received: header definition.
456682f5 787
49826d12
PH
788PH/12 Added log selector acl_warn_skipped (default on).
789
eba0c039
PH
790PH/13 After a successful wildlsearch lookup, discard the values of numeric
791 variables because (a) they are in the wrong storage pool and (b) even if
792 they were copied, it wouldn't work properly because of the caching.
793
a0d6ba8a
PH
794PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
795 checking when decoding. Apparently there are clients that generate
796 overlong encoded strings. Why am I not surprised?
797
f0917727
PH
798PH/15 If the first argument of "${if match_address" was not empty, but did not
799 contain an "@" character, Exim crashed. Now it writes a panic log message
800 and treats the condition as false.
801
096fee00
PH
802PH/16 In autoreply, treat an empty string for "once" the same as unset.
803
024bd3c2
PH
804PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
805 extension "envelope-auth". The code is finished and in agreement with
806 other implementations, but there is no documentation so far and in fact,
807 nobody wrote the draft yet. This extension is currently #undef'ed, thus
808 not changing the active code.
809
810 Print executed "if" and "elsif" statements when debugging is used. This
811 helps a great deal to understand what a filter does.
812
813 Document more things not specified clearly in RFC3028. I had all this
814 sorted out, when out of a sudden new issues came to my mind. Oops."
815
df199fec
PH
816PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
817 (Bugzilla #53).
818
d27f1df3
PH
819PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
820 canonical form (as documented). However, after a host name lookup from
821 the IP address, check_host() was doing a simple string comparison with
822 addresses acquired from the DNS when checking that the found name did
823 have the original IP as one of its addresses. Since any found IPv6
824 addresses are likely to be in abbreviated form, the comparison could
825 fail. Luckily, there already exists a function for doing the comparison
826 by converting both addresses to binary, so now that is used instead of
827 the text comparison.
828
96776534
PH
829PH/20 There was another similar case to PH/19, when a complete host name was
830 given in a host list; looking up its IP address could give an abbreviated
831 form, whereas the current host's name might or might not be abbreviated.
832 The same fix has been applied.
833
5de37277 834
9a799bc0
PH
835Exim version 4.54
836-----------------
837
838PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
839 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
840 It now does.
841
99a4b039
PH
842PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
843 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
844
845PH/03 Typo: missing ".o" in src/pcre/Makefile.
846
4b233853
PH
847PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
848 header line, restrict the check to what is listed in RFCs 2369 and 2929.
849 Also, for "Auto-Submitted", treat anything other than "no" as
850 non-personal, in accordance with RFC 3834. (Previously it treated
851 anything starting "auto-" as non-personal.)
852
8857ccfd
PH
853TF/01 The control=submission/name=... option had a problem with syntax
854 errors if the name included a slash character. The /name= option
855 now slurps the rest of the string, so it can include any characters
856 but it must come last in the list of options (after /sender_retain
857 or /domain=).
858
433a2980
PH
859PH/05 Some modifications to the interface to the fake nameserver for the new
860 testing suite.
861
3e46c1aa 862
9a799bc0 863
e3a311ba
TK
864Exim version 4.53
865-----------------
866
867TK/01 Added the "success_on_redirect" address verification option. See
868 NewStuff for rationale and an example.
869
13b685f9
PH
870PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
871
395ff96d
PH
872PH/02 Patch to exigrep to allow it to work on syslog lines.
873
5b68f6e4
PH
874PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
875 fread() to skip over the body file's header line, because in Cygwin the
876 header line is locked and is inaccessible.
877
1ab52c69
PH
878PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
879 co-exist for some time) to make it clear that it is the Exim ID that is
880 referenced, not the Message-ID: header line.
881
b07e6aa3
PH
882PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
883 string_format() function, because snprintf() does not exist on all
884 operating systems.
885
254e032f
PH
886PH/06 The use of forbid_filter_existstest now also locks out the use of the
887 ${stat: expansion item.
888
3af76a81
PH
889PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
890 protocol synchronization error", to keep the pedants happy.
891
2548ba04
PH
892PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
893 well as for IRIX systems, when gcc is being used. See the host.c source
894 file for comments.
895
b6c6011d
PH
896PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
897
cf39cf57
PH
898PH/10 Named domain lists were not working if used in a queue_smtp_domains
899 setting.
900
f1513293
PH
901PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
902 transport and to the smtp transport in LMTP mode.
903
727549a4
PH
904TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
905
af46795e
PH
906PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
907 run a filter in a subprocess. This could lead to confusion in subsequent
908 lookups in the parent process. There should also be a search_tidyup() at
909 the end of the subprocess.
910
d7b47fd0
PH
911PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
912 only if the host matched helo_try_verify_hosts, which caused the
913 verification to occur when the EHLO/HELO command was issued. The ACL just
914 tested the remembered result. Now, if a previous verification attempt has
915 not happened, "verify = helo" does it there and then.
916
ee744174
JJ
917JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
918
b582ab87
PH
919TK/03 Fix log output including CR from clamd.
920
41a13e0a
PH
921PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
922 exist provoked a memory error which could cause a segfault.
923
f625cc5a
PH
924PH/15 Installed PCRE 6.2
925
926PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
927
21f7af35
PH
928PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
929 of the problem. Specifically, suggested +O2 rather than +O1 for the
930 HP-UX compiler.
931
31480e42
PH
932PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
933
2d280592
PH
934PH/20 If a delivery was routed to a non-standard port by means of an SRV
935 record, the port was not correctly logged when the outgoing_port log
936 selector was set (it logged the transort's default port).
937
7cd1141b
PH
938PH/21 Added support for host-specific ports to manualroute, queryprogram,
939 fallback_hosts, and "hosts" in the smtp transport.
940
941PH/22 If the log selector "outgoing_port" is set, the port is now also given on
942 host errors such as "Connection refused".
943
750af86e
PH
944PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
945 authentication with radiusclient 0.4.9:
946
947 - Error returned from rc_read_config was caught wrongly
948 - Username/password not passed on to radius server due to wrong length.
949
950 The presumption is that some radiusclient API changes for 4.51/PH/17
951 were not taken care of correctly. The code is still untested by me (my
952 Linux distribution still has 0.3.2 of radiusclient), but it was
953 contributed by a Radius user.
954
955PH/24 When doing a callout, the value of $domain wasn't set correctly when
956 expanding the "port" option of the smtp transport.
957
4304270b
TK
958TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
959 while reading a MIME header. Thanks to Tom Hughes for a patch.
960
750af86e
PH
961PH/24 Include config.h inside local_scan.h so that configuration settings are
962 available.
963
64ffc24f
PH
964PH/25 Make $smtp_command_argument available after all SMTP commands. This means
965 that in an ACL for RCPT (for example), you can examine exactly what was
966 received.
967
5dd9625b
PH
968PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
969 commands, but it was not correctly comparing the address with the actual
970 client host address. Thus, it would show the EHLO address in Received:
971 header lines when this was not necessary.
972
5591031b
PH
973PH/27 Added the % operator to ${eval:}.
974
ba18e66a
PH
975PH/28 Exim tries to create and chdir to its spool directory when it starts;
976 it should be ignoring failures (because with -C, for example, it has lost
977 privilege). It wasn't ignoring creation failures other than "already
978 exists".
979
9cec981f
PH
980PH/29 Added "crypteq" to the list of supported features that Exim outputs when
981 -bV or -d is used.
982
aa2b5c79
PH
983PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
984 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
985 too many continuations, the temporary file was not being removed, and the
986 return code was incorrect.
aa2b5c79 987
48a53b7f
PH
988PH/31 Missing "BOOL" in function definition in filtertest.c.
989
1c59d63b
PH
990PH/32 Applied Sieve patches from the maintainer.
991
671012da
TK
992TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
993
1509d3a8
PH
994PH/33 Added "verify = not_blind".
995
996PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
997 Local/Makefile (with some defaults set). These are used in built scripts
998 such as exicyclog, but they have never been used in the exim_install
999 script (though there are many overriding facilities there). I have
1000 arranged that the exim_install script now takes note of these two
1001 settings.
1002
1003PH/35 Installed configuration files for Dragonfly.
1004
2fe1a124
PH
1005PH/36 When a locally submitted message by a trusted user did not contain a
1006 From: header, and the sender address was obtained from -f or from an SMTP
1007 MAIL command, and the trusted user did not use -F to supply a sender
1008 name, $originator_name was incorrectly used when constructing a From:
1009 header. Furthermore, $originator_name was used for submission mode
1010 messages from external hosts without From: headers in a similar way,
1011 which is clearly wrong.
1012
8800895a
PH
1013PH/37 Added control=suppress_local_fixups.
1014
ccfdb010
PH
1015PH/38 When log_selector = +received_sender was set, and the addition of the
1016 sender made the log line's construction buffer exactly full, or one byte
1017 less than full, an overflow happened when the terminating "\n" was
1018 subsequently added.
1019
1130bfb0
PH
1020PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1021 when the result of a list match is failure because a DNS lookup failed.
1022
ebcb507f
PH
1023PH/40 RM_COMMAND is now used in the building process.
1024
c35e155c
PH
1025PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1026 the "build-* directories that it finds.
1027
95d1f782
PH
1028PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1029 address in a domain literal was a prefix of an interface address.
1030
fd6de02e
PH
1031PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1032 when verifying a sender address, unless rewrite_headers is false.
1033
58de37c5
PH
1034PH/44 Wrote a long comment about why errors_to addresses are verified as
1035 recipients, not senders.
1036
261cf466
TF
1037TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1038 the ratelimit ACL was added.
1039
3ee512ff
PH
1040PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1041
e08c430f
PH
1042PH/46 Added extra information about PostgreSQL errors to the error string.
1043
bef5a11f
PH
1044PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1045 avoiding the need to install special zones in a real server. This is
1046 backwards compatible; if it can't find the fake resolver, it drops back.
1047 Thus, both old and new test suites can be run.
1048
7546de58
TF
1049TF/02 Added util/ratelimit.pl
1050
e5d5a95f
TF
1051TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1052 clock is set back in time.
1053
2e88a017
TF
1054TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1055 Candler <B.Candler@pobox.com>.
1056
a5f65aa4
TF
1057TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1058 OK for addresses that are the result of redirections.
1059
e7726cbf
PH
1060PH/48 A number of further additions for the benefit of the new test suite,
1061 including a fake gethostbyname() that interfaces to the fake DNS resolver
1062 (see PH/47 above).
1063
a7fdad5b
TF
1064TF/06 The fix for widen_domains has also been applied to qualify_single and
1065 search_parents which are the other dnslookup options that can cause
1066 header rewrites.
1067
6af56900
PH
1068PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1069 type ("H").
1070
0925ede6
PH
1071PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1072
66afa403
TF
1073TF/07 Exim produced the error message "an SRV record indicated no SMTP
1074 service" if it encountered an MX record with an empty target hostname.
1075 The message is now "an MX or SRV record indicated no SMTP service".
1076
0154e85a
TF
1077TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1078 if the DNS of the sending site is misconfigured. This is quite a
1079 common situation. This change restores the behaviour of treating a
1080 helo verification defer as a failure.
1081
16f12c76
PH
1082PH/51 If self=fail was set on a router, the bounce message did not include the
1083 actual error message.
1084
bbe902f0 1085
e5a9dba6
PH
1086Exim version 4.52
1087-----------------
1088
1089TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1090
22c3b60b
PH
1091PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1092 command itself ended in error, the underlying message about the transport
1093 filter timeout was being overwritten with the pipe command error. Now the
1094 underlying error message should be appended to the second error message.
1095
06a9b4b5
PH
1096TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1097
c1ac6996
PH
1098PH/02 Reduce the amount of output that "make" produces by default. Full output
1099 can still be requested.
1100
9c7a242c
PH
1101PH/03 The warning log line about a condition test deferring for a "warn" verb
1102 was being output only once per connection, rather than after each
1103 occurrence (because it was using the same function as for successful
1104 "warn" verbs). This seems wrong, so I have changed it.
1105
87ba3f5f
PH
1106TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1107 it should not have, which might have caused a crash in the right
1108 circumstances, but probably never did.
1109
1110PH/04 Installed a modified version of Tony Finch's patch to make submission
1111 mode fix the return path as well as the Sender: header line, and to
1112 add a /name= option so that you can make the user's friendly name appear
1113 in the header line.
1114
29aba418
TF
1115TF/03 Added the control = fakedefer ACL modifier.
1116
fe0dab11
TF
1117TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1118 Mark Lowes for thorough testing.
870f6ba8 1119
11d337a4
TK
1120TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1121
1122TK/03 Merged latest SRS patch from Miles Wilton.
1123
415c8f3b
PH
1124PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1125 with the definition in sysexits.h (which is #included earlier).
1126 Fortunately, Exim does not actually use EX_OK. The code used to try to
1127 preserve the sysexits.h value, by assumimg that macro definitions were
1128 scanned for macro replacements. I have been disabused of this notion,
1129 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1130
958541e9
PH
1131PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1132 in the smtp transport. When a block could not be written in a single
1133 write() function, the timeout was being re-applied to each part-write.
1134 This seems wrong - if the receiver was accepting one byte at a time it
1135 would take for ever. The timeout is now adjusted when this happens. It
1136 doesn't have to be particularly precise.
1137
c206415f
TK
1138TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1139 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1140
2a4be8f9
PH
1141PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1142 without a domain if the check to <postmaster@domain> fails.
1143
1cba11c5
SC
1144SC/01 Eximstats: added -xls and the ability to specify output files
1145 (patch written by Frank Heydlauf).
1146
1147SC/02 Eximstats: use FileHandles for outputing results.
1148
1149SC/03 Eximstats: allow any combination of xls, txt, and html output.
1150
1151SC/04 Eximstats: fixed display of large numbers with -nvr option
1152
1153SC/05 Eximstats: fixed merging of reports with empty tables.
1154
1155SC/06 Eximstats: added the -include_original_destination flag
1156
1157SC/07 Eximstats: removed tabs and trailing whitespace.
1158
1005d00e
TK
1159TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1160
1161TK/06 MBOX spool code: Add real "From " MBOX separator line
1162 so the .eml file is really in mbox format (even though
1163 most programs do not really care). Patch from Alex Miller.
1164
1165TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1166 The latter is generated from $received_to and is only set if the
1167 message has one envelope recipient. SA can use these headers,
1168 obviously out-of-the-box. Patch from Alex Miller.
1169
9b4768fa
PH
1170PH/08 The ${def test on a variable was returning false if the variable's
1171 value was "0", contrary to what the specification has always said!
1172 The result should be true unless the variable is empty.
1173
1174PH/09 The syntax error of a character other than { following "${if
1175 def:variable_name" (after optional whitespace) was not being diagnosed.
1176 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1177 accidental colon was present, for example, could give incorrect results.
1178
0d7eb84a
PH
1179PH/10 Tidied the code in a number of places where the st_size field of a stat()
1180 result is used (not including appendfile, where other changes are about
1181 to be made).
1182
1183PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1184 This involved changing a lot of size variables from int to off_t. It
1185 should work with maildirs and everything.
1186
40727bee
TK
1187TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1188 spamd dying while we are connected to it.
1189
554d2369
TF
1190TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1191 <jgh@wizmail.org>
1192
1f922db1
PH
1193PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1194 function for BDB 4.3.
1195
ef213c3b
PH
1196PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1197
8ac170f3
PH
1198PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1199 the sources for PCRE have been re-arranged and more files are now
1200 involved.
1201
b1c749bb
PH
1202PH/15 The code I had for printing potentially long long variables in PH/11
1203 above was not the best (it lost precision). The length of off_t variables
1204 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1205 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1206 to be "long long int" or "long int". This is needed for the internal
1207 formatting function string_vformat().
b1c749bb 1208
4aac9b49
PH
1209PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1210 the configuration file to be ":syslog", then the script "guesses" where
1211 the logs files are, rather than using the compiled in default. In our
1212 case the guess is not the same as the compiled default, so the script
1213 suddenly stopped working when I started to use syslog. The patch checks
1214 to see if log_file_path is "". If so, it attempts to read it from exim
1215 with no configuration file to get the compiled in version, before it
1216 falls back to the previous guessing code."
1217
294520c8
TK
1218TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1219 implementing BATV in an Exim configuration. See NewStuff for the gory
1220 details.
1221
5bd022fe
PH
1222PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1223 Makefile that are specific to HP-UX.
1224
90e9ce59
PH
1225PH/18 If the "use_postmaster" option was set for a recipient callout together
1226 with the "random" option, the postmaster address was used as the MAIL
1227 FROM address for the random test, but not for the subsequent recipient
1228 test. It is now used for both.
1229
5ea81592
PH
1230PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1231 patch removes a few documentation additions to RFC 3028, because the
1232 latest draft now contains them. It adds the new en;ascii-case comparator
1233 and a new error check for 8bit text in MIME parts. Comparator and
1234 require names are now matched exactly. I enabled the subaddress
1235 extension, but it is not well tested yet (read: it works for me)."
1236
c6c2dc1d
PH
1237PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1238 rework some of the code of TK/09 above to avoid the hardwired use of
1239 "%lld" and "long long". Replaced the call to snprintf() with a call to
1240 string_vformat().
1241
fffffe4c
PH
1242PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1243 records point to non-existent hosts", "retry timeout exceeded", and
1244 "retry time not reached for any host after a long failure period".
ca02eafb 1245
9a26b6b2
PH
1246PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1247 experimental DomainKeys support:
1248
1249 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1250 (2) On an error such as an illegally used "control", the wrong name for
1251 the control was given.
1252
1253 These problems did NOT occur unless DomainKeys support was compiled.
1254
4aee0225
PH
1255PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1256
32d668a5
PH
1257PH/24 Added ${if match_ip condition.
1258
8187c3f3
PH
1259PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1260 databases so that it will be absolutely obvious if a crash occurs in the
1261 DB library. This is a regular occurrence (often caused by mis-matched
1262 db.h files).
1263
ff790e47 1264PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1265 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1266 picked up on a user's system that detects such things. There doesn't seem
1267 to be a gcc warning option for this - only an attribute that has to be
1268 put on the function's prototype. It seems that in Fedora Core 4 they have
1269 set this on a number of new functions. No doubt there will be more in due
1270 course.
ff790e47 1271
5417f6d1
PH
1272PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1273 specify a transport. However, if an address that was verified by such a
1274 router was the subject of a callout, Exim crashed because it tried to
1275 read the rcpt_include_affixes from the non-existent transport. Now it
1276 just assumes that the setting of that option is false. This bug was
1277 introduced by 4.51/PH/31.
1278
59cf8544
PH
1279PH/28 Changed -d+all to exclude +memory, because that information is very
1280 rarely of interest, but it makes the output a lot bigger. People tend to
1281 do -d+all out of habit.
1282
e7ad8a65
PH
1283PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1284 code in os-type was giving problems when libc.so lives in lib64, like on
1285 x86_64 Fedora Core.
1286
ade42478
PH
1287PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1288 aren't the modern standard, and it seems that some systems' include files
1289 don't always have them. Exim was already checking for some of the newer
1290 ones like T_AAAA, and defining it itself. I've added checks for all the
1291 record types that Exim uses.
1292
182ad5cf
PH
1293PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1294 not automatically generating a new one, as it is supposed to. This
1295 prevented TLS from working. If the file did exist, but contained invalid
1296 data, a new version was generated, as expected. It was only the case of a
1297 non-existent file that was broken.
1298
b0d9fc80
TK
1299TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1300 with a change in libdomainkeys > 0.64.
1301
1302TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1303 from DNS. If the selector record carries the flag, it now has
1304 precedence over the domain-wide flag.
1305
1306TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1307
47c7a64a
PH
1308PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1309 the use of a port name that isn't defined in /etc/services) occurred, the
1310 message was deferred as in a normal delivery, and thus remained on the
1311 spool, instead of being failed because of the mua_wrapper setting. This
1312 is now fixed, and I tidied up some of the mua_wrapper messages at the
1313 same time.
1314
a388bce4
SC
1315SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1316 the messages in a hash of arrays rather than using individual hashes.
1317 This is a bit cleaner and results in dramatic memory savings, albeit
1318 at a slight CPU cost.
1319
1320SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1321 as requested by Marc Sherman.
1322
1323SC/10 Eximstats: added histograms for user specified patterns as requested
1324 by Marc Sherman.
1325
0793e4ed
SC
1326SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1327
c58b88df
PH
1328PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1329 fopen() in the content-scanning modules that did not already have it.
1330
e7ad8a65 1331
7982096b
PH
1332Exim version 4.51
1333-----------------
1334
1a46a8c5
PH
1335TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1336 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1337
2f079f46 1338TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1339
1340TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1341
1342PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1343 to test Sieve filters that use "vacation".
1344
1345PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1346 that changes the way the GnuTLS parameters are stored in the cache file.
1347 The new format can be generated externally. For backward compatibility,
1348 if the data in the cache doesn't make sense, Exim assumes it has read an
1349 old-format file, and it generates new data and writes a new file. This
1350 means that you can't go back to an older release without removing the
1351 file.
1352
1353PH/03 A redirect router that has both "unseen" and "one_time" set does not
1354 work if there are any delivery delays because "one_time" forces the
1355 parent to be marked "delivered", so its unseen clone is never tried
1356 again. For this reason, Exim now forbids the simultaneous setting of
1357 these two options.
1358
1359PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1360 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1361 entry if you want to know the details. The fix, however, neglected to
1362 consider the case when local delivery batching is involved. The test for
1363 "previously delivered" was not happening when checking to see if an
1364 address could be batched with a previous (undelivered) one; under
1365 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1366 address.
1a46a8c5
PH
1367
1368PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1369 in its include files, and this causes problems building Exim.
1370
1371PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1372 header_syntax) but Exim was just ignoring anything given after a slash.
1373 In particular, this caused confusion with an attempt to use "verify =
1374 reverse_host_lookup/defer_ok". An error is now given when options are
1375 supplied for verify items that do not have them. (Maybe reverse_host_
1376 lookup should have a defer_ok option, but that's a different point.)
1377
1378PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1379 defined by RFC 821) to 2048, because there were problems with some AUTH
1380 commands, and RFC 1869 says the size should be increased for extended
1381 SMTP commands that take arguments.
1382
1383PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1384 Finch).
1385
1386PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1387 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1388
49c2d5ea
PH
1389PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1390 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1391 whatever). Otherwise the password may appear in the log. Following change
1392 PH/42 below, there is no longer a chance of it appearing in a bounce
1393 message.
49c2d5ea 1394
bf759a8b
PH
1395PH/11 Installed exipick version 20050225.0 from John Jetmore.
1396
83364d30
PH
1397PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1398 of its addresses was ever tried. (Bugzilla bug #2.)
1399
7999bbd7
PH
1400PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1401 the result incorrectly in the debug output. (It correctly added a newline
1402 to what was transported.)
1403
7dbf77c9
PH
1404TF/01 Added $received_time.
1405
74e0617f
PH
1406PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1407 commented out examples of how to interface to a virus scanner and to
1408 SpamAssassin. Also added commented examples of av_scanner and
1409 spamd_address settings.
1410
2f079f46
PH
1411PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1412 and controls are allowed in which ACLs. There were a couple of minor
1413 errors. Some of the entries in the conditions table (which is a table of
1414 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1415 negation of where the condition IS allowed.
1416
8c841523
PH
1417PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1418
7766a4f0
PH
1419PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1420 header file does not have a version number, so I've had to invent a new
1421 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1422 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1423 radiusclient), but it was contributed by a Radius user.
1424
8b417f2c
PH
1425PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1426 files or directories, for OpenSSL.
1427
901f42cb
PH
1428PH/19 When an Exim process that is running as root has to create an Exim log
1429 file, it does so in a subprocess that runs as exim:exim so as to get the
1430 ownership right at creation (otherwise, other Exim processes might see
1431 the file with the wrong ownership). There was no test for failure of this
1432 fork() call, which would lead to the process getting stuck as it waited
1433 for a non-existent subprocess. Forks do occasionally fail when resources
1434 run out. I reviewed all the other calls to fork(); they all seem to check
1435 for failure.
1436
f9b9210e
PH
1437PH/20 When checking for unexpected SMTP input at connect time (before writing
1438 the banner), Exim was not dealing correctly with a non-positive return
1439 from the read() function. If the client had disconnected by this time,
1440 the result was a log entry for a synchronization error with an empty
1441 string after "input=" when read() returned zero. If read() returned -1
1442 (an event I could not check), uninitialized data bytes were printed.
1443 There were reports of junk text (parts of files, etc) appearing after
1444 "input=".
1445
54cdb463
PH
1446PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1447
cf00dad6
PH
1448PH/22 Added support for macro redefinition, and (re)definition in between
1449 driver and ACL definitions.
1450
acb1b346
PH
1451PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1452 forgetting to use the resulting value; it was using the unexpanded value.
1453
c5ddb310
PH
1454PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1455 hadn't been configured. The fix is from Juergen Kreileder, who
1456 understands it better than I do:
1457
1458 "Here's what I see happening with three configured cyrus_sasl
1459 authenticators configured (plain, login, cram-md5):
1460
1461 On startup auth_cyrus_sasl_init() gets called for each of these.
1462 This means three calls to sasl_listmech() without a specified mech_list.
1463 => SASL tests which mechs of all available mechs actually work
1464 => three warnings about OTP not working
1465 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1466
1467 With the patch, sasl_listmech() also gets called three times. But now
1468 SASL's mech_list option is set to the server_mech specified in the the
1469 authenticator. Or in other words, the answer from sasl_listmech()
1470 gets limited to just the mech you're testing for (which is different
1471 for each call.)
1472 => the return list contains just 'plain' or 'login', 'cram-md5' or
1473 nothing depending on the value of ob->server_mech.
1474
1475 I've just tested the patch: Authentication still works fine,
1476 unavailable mechs specified in the exim configuration are still
1477 caught, and the auth.log warnings about OTP are gone."
1478
31619da6
PH
1479PH/25 When debugging is enabled, the contents of the command line are added
1480 to the debugging output, even when log_selector=+arguments is not
1481 specified.
1482
bebaf0fc
PH
1483PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1484 answer is "GNU", and only if the return is "GNU/something" is the answer
1485 "Linux".
1486
475fe28a
PH
1487PH/27 $acl_verify_message is now set immediately after the failure of a
1488 verification in an ACL, and so is available in subsequent modifiers. In
1489 particular, the message can be preserved by coding like this:
1490
1491 warn !verify = sender
1492 set acl_m0 = $acl_verify_message
1493
1494 Previously, $acl_verify_message was set only while expanding "message"
1495 and "log_message" when a very denied access.
1496
7e8bec7a
PH
1497PH/28 Modified OS/os.c-Linux with
1498
1499 -#ifndef OS_LOAD_AVERAGE
1500 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1501
1502 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1503 nomenclature these days.)
1504
e4a89c47
PH
1505PH/29 Installed patch from the Sieve maintainer that adds the options
1506 sieve_useraddress and sieve_subaddress to the redirect router.
1507
5ca2a9a1
PH
1508PH/30 In these circumstances:
1509 . Two addresses routed to the same list of hosts;
1510 . First host does not offer TLS;
1511 . First host accepts first address;
1512 . First host gives temporary error to second address;
1513 . Second host offers TLS and a TLS session is established;
1514 . Second host accepts second address.
1515 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1516 and peerdn, if requested) that were in fact used only for the second
1517 address.
7e8bec7a 1518
c688b954
PH
1519PH/31 When doing a callout as part of verifying an address, Exim was not paying
1520 attention to any local part prefix or suffix that was matched by the
1521 router that accepted the address. It now behaves in the same way as it
1522 does for delivery: the affixes are removed from the local part unless
1523 rcpt_include_affixes is set on the transport.
1524
fed77020
PH
1525PH/32 Add the sender address, as F=<...>, to the log line when logging a
1526 timeout during the DATA phase of an incoming message.
1527
7fe1560f
PH
1528PH/33 Sieve envelope tests were broken for match types other than :is. I have
1529 applied a patch sanctioned by the Sieve maintainer.
c688b954 1530
ebb6e6d5
PH
1531PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1532 the uid or gid is negative. A case of a negative gid caused this to be
1533 noticed. The fix allows for either to be negative.
1534
9c4e8f60
PH
1535PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1536 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1537 overlooked.
1538
1539PH/36 The change PH/12 above was broken. Fixed it.
1540
d7174846
PH
1541PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1542 the grounds that routing the same address twice would always produce the
1543 same answer. This might have been true once, but it is certainly no
1544 longer true now. Routing a child address may depend on the previous
1545 routing that produced that child. Some complicated redirection strategies
1546 went wrong when messages had multiple recipients, and made Exim's
1547 behaviour dependent on the order in which the addresses were given.
1548
1549 I have moved the duplicate checking until after the routing is complete.
1550 Exim scans the addresses that are assigned to local and remote
1551 transports, and removes any duplicates. This means that more work will be
1552 done, as duplicates will always all be routed, but duplicates are
1553 presumably rare, so I don't expect this is of any significance.
1554
1555 For deliveries to pipes, files, and autoreplies, the duplicate checking
1556 still happens during the routing process, since they are not going to be
1557 routed further.
1558
cfe75fc3
PH
1559PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1560 It corrects a timeout issue with spamd. This is Ian's comment: "The
1561 background is that sometimes spamd either never reads data from a
1562 connection it has accepted, or it never writes response data. The exiscan
1563 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1564 blindly assumes that writes won't block so it may never time out."
1565
be22d70e
PH
1566PH/39 Allow G after quota size as well as K and M.
1567
0612b098
PH
1568PH/40 The value set for $authenticated_id in an authenticator may not contain
1569 binary zeroes or newlines because the value is written to log lines and
1570 to spool files. There was no check on this. Now the value is run through
1571 the string_printing() function so that such characters are converted to
1572 printable escape sequences.
1573
2e0c1448
PH
1574PH/41 $message_linecount is a new variable that contains the total number of
1575 lines in the message. Compare $body_linecount, which is the count for the
1576 body only.
1577
447d236c
PH
1578PH/42 Exim no longer gives details of delivery errors for specific addresses in
1579 bounce and delay warning messages, except in certain special cases, which
1580 are as follows:
1581
1582 (a) An SMTP error message from a remote host;
1583 (b) A message specified in a :fail: redirection;
1584 (c) A message specified in a "fail" command in a system filter;
1585 (d) A message specified in a FAIL return from the queryprogram router;
1586 (e) A message specified by the cannot_route_message router option.
1587
1588 In these cases only, Exim does include the error details in bounce and
1589 warning messages. There are also a few cases where bland messages such
1590 as "unrouteable address" or "local delivery error" are given.
1591
d20976dc
PH
1592PH/43 $value is now also set for the "else" part of a ${run expansion.
1593
f656d135
PH
1594PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1595 being worked on, but at least Exim now implements the latest version to
1596 play with."
1597
2e2a30b4
PH
1598PH/45 In a pipe transport, although a timeout while waiting for the pipe
1599 process to complete was treated as a delivery failure, a timeout while
1600 writing the message to the pipe was logged, but erroneously treated as a
1601 successful delivery. Such timeouts include transport filter timeouts. For
1602 consistency with the overall process timeout, these timeouts are now
1603 treated as errors, giving rise to delivery failures by default. However,
1604 there is now a new Boolean option for the pipe transport called
1605 timeout_defer, which, if set TRUE, converts the failures into defers for
1606 both kinds of timeout. A transport filter timeout is now identified in
1607 the log output.
1608
9176e9f0
PH
1609PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1610 systems where "make" and "gmake" are different, calling "gmake" at top
1611 level broke things. I've arranged for the value of $(MAKE) to be passed
1612 from the Makefile to this script so that it can call the same version of
1613 "make".
1614
7982096b 1615
bbe902f0
PH
1616A note about Exim versions 4.44 and 4.50
1617----------------------------------------
1618
1619Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1620changes of various kinds. As a consequence, a big documentation update was
1621needed. This delayed the release for rather longer than seemed good, especially
1622in the light of a couple of (minor) security issues. Therefore, the changes
1623that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1624release. So 4.44 and 4.50 are in effect two different branches that both start
1625from 4.43.
1626
1627I have left the 4.50 change log unchanged; it contains all the changes since
16284.43. The change log for 4.44 is below; many of its items are identical to
1629those for 4.50. This seems to be the most sensible way to preserve the
1630historical information.
1631
1632
f7b63901 1633Exim version 4.50
495ae4b0
PH
1634-----------------
1635
5fe762f6
PH
1636 1. Minor wording change to the doc/README.SIEVE file.
1637
139059f6 1638 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1639 computation of the current number of files was incorrect.
495ae4b0 1640
7086e875
PH
1641 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1642 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1643 place.
1644
35af9f61
PH
1645 4. Give more explanation in the error message when the command for a transport
1646 filter fails to execute.
1647
b668c215
PH
1648 5. There are several places where Exim runs a non-Exim command in a
1649 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1650 was being done only for the command run by the queryprogram router. It is
1651 now done for all such subprocesses. The other cases are: ${run, transport
1652 filters, and the commands run by the lmtp and pipe transports.
1653
a494b1e1
PH
1654 6. Added CONFIGURE_GROUP build-time option.
1655
1656 7. Some older OS have a limit of 256 on the maximum number of file
1657 descriptors. Exim was using setrlimit() to set 1000 as a large value
1658 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1659 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1660
c5fcb476
PH
1661 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1662 was an oversight, and furthermore, ever since the addition of extra
1663 controls (e.g. 4.43/32), the checks on when to allow different forms of
1664 "control" were broken. There should now be diagnostics for all cases when a
1665 control that does not make sense is encountered.
1666
69358f02
PH
1667 9. Added the /retain_sender option to "control=submission".
1668
5be20824
PH
166910. $recipients is now available in the predata ACL (oversight).
1670
eb2c0248
PH
167111. Tidy the search cache before the fork to do a delivery from a message
1672 received from the command line. Otherwise the child will trigger a lookup
1673 failure and thereby defer the delivery if it tries to use (for example) a
1674 cached ldap connection that the parent has called unbind on.
1675
2a3eea10
PH
167612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1677 of $address_data from the recipient verification was clobbered by the
1678 sender verification.
1679
168013. The value of address_data from a sender verification is now available in
1681 $sender_address_data in subsequent conditions in the ACL statement.
1682
23c7ff99
PH
168314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1684
4deaf07d
PH
168515. Added a new option "connect=<time>" to callout options, to set a different
1686 connection timeout.
1687
926e1192
PH
168816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1689 was its contents. (It was OK if the option was not defined at all.)
1690
650edc6f
PH
169117. A "Completed" log line is now written for messages that are removed from
1692 the spool by the -Mrm option.
1693
2c7db3f5
PH
169418. New variables $sender_verify_failure and $recipient_verify_failure contain
1695 information about exactly what failed.
1696
3d235903
PH
169719. Added -dd to debug only the daemon process.
1698
7c7ad977
PH
169920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1700 handles timeouts, both on the server side and network timeouts. Renamed the
1701 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1702
981756db
PH
170321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1704 It is now set to "smtps".
1705
d4eb88df
PH
170622. $host_address is now set to the target address during the checking of
1707 ignore_target_hosts.
1708
170923. When checking ignore_target_hosts for an ipliteral router, no host name was
1710 being passed; this would have caused $sender_host_name to have been used if
1711 matching the list had actually called for a host name (not very likely,
1712 since this list is usually IP addresses). A host name is now passed as
1713 "[x.x.x.x]".
1714
7d468ab8
PH
171524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1716 code that specifies a non-restarting handler (typically sigaction() in
1717 modern systems) in an attempt to fix a rare and obscure crash bug.
1718
171925. Narrowed the window for a race in the daemon that could cause it to ignore
1720 SIGCHLD signals. This is not a major problem, because they are used only to
1721 wake it up if nothing else does.
1722
62c0818f
PH
172326. A malformed maildirsize file could cause Exim to calculate negative values
1724 for the mailbox size or file count. Odd effects could occur as a result.
1725 The maildirsize information is now recalculated if the size or filecount
1726 end up negative.
1727
26034054
PH
172827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1729 support for a long time. Removed HAVE_SYS_VFS_H.
1730
af66f652
PH
173128. Installed the latest version of exipick from John Jetmore.
1732
90af77f4
PH
173329. In an address list, if the pattern was not a regular expression, an empty
1734 subject address (from a bounce message) matched only if the pattern was an
1735 empty string. Non-empty patterns were not even tested. This was the wrong
1736 because it is perfectly reasonable to use an empty address as part of a
1737 database query. An empty address is now tested by patterns that are
1738 lookups. However, all the other forms of pattern expect the subject to
1739 contain a local part and a domain, and therefore, for them, an empty
1740 address still always fails if the pattern is not itself empty.
1741
d8ef3577
PH
174230. Exim went into a mad DNS loop when attempting to do a callout where the
1743 host was specified on an smtp transport, and looking it up yielded more
1744 than one IP address.
1745
5cb8cbc6
PH
174631. Re-factored the code for checking spool and log partition space into a
1747 function that finds that data and another that does the check. The former
1748 is then used to implement four new variables: $spool_space, $log_space,
1749 $spool_inodes, and $log_inodes.
1750
14702f5b
PH
175132. The RFC2047 encoding function was originally intended for short strings
1752 such as real names; it was not keeping to the 75-character limit for
1753 encoded words that the RFC imposes. It now respects the limit, and
1754 generates multiple encoded words if necessary. To be on the safe side, I
1755 have increased the buffer size for the ${rfc2047: expansion operator from
1756 1024 to 2048 bytes.
1757
063b1e99
PH
175833. It is now permitted to omit both strings after an "if" condition; if the
1759 condition is true, the result is "true". As before, when the second string
1760 is omitted, a false condition yields an empty string. This makes it less
1761 cumbersome to write custom ACL and router conditions.
1762
652e1b65
PH
176334. Failure to deliver a bounce message always caused it to be frozen, even if
1764 there was an errors_to setting on the router. The errors_to setting is now
1765 respected.
1766
6f0c9a4f
PH
176735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1768 canonical form (fully expanded) before being placed in
1769 $sender_host_address.
1770
33397d19
PH
177136. The table in the code that translates DNS record types into text (T_A to
1772 "A" for instance) was missing entries for NS and CNAME. It is just possible
1773 that this could have caused confusion if both these types were looked up
1774 for the same domain, because the text type is used as part of Exim's
1775 per-process caching. But the chance of anyone hitting this buglet seems
1776 very small.
1777
7bb56e1f
PH
177837. The dnsdb lookup has been extended in a number of ways.
1779
1780 (1) There is a new type, "zns", which walks up the domain tree until it
1781 finds some nameserver records. It should be used with care.
1782
ea3bc19b
PH
1783 (2) There is a new type, "mxh", which is like "mx" except that it returns
1784 just the host names, not the priorities.
1785
1786 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1787 looked up. The behaviour when one of the lookups defers can be
1788 controlled by a keyword.
7bb56e1f 1789
ea3bc19b 1790 (4) It is now possible to specify the separator character for use when
7bb56e1f 1791 multiple records are returned.
33397d19 1792
0bcb2a0e
PH
179338. The dnslists ACL condition has been extended: it is now possible to supply
1794 a list of IP addresses and/or domains to be looked up in a particular DNS
1795 domain.
1796
2ac0e484
PH
179739. Added log_selector=+queue_time_overall.
1798
4e1fde53
PH
179940. When running the queue in the test harness, wait just a tad after forking a
1800 delivery process, to get repeatability of debugging output.
1801
de365ded
PH
180241. Include certificate and key file names in error message when GnuTLS fails
1803 to set them up, because the GnuTLS error message doesn't include the name
1804 of the failing file when there is a problem reading it.
1805
f05da2e8
PH
180642. Allow both -bf and -bF in the same test run.
1807
d6453af2
PH
180843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1809
f7b63901
PH
181044. The "Exiscan patch" is now merged into the mainline Exim source.
1811
181245. Sometimes the final signoff response after QUIT could fail to get
1813 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1814 < 0 before doing a fflush(). This bug looks as though it goes back to the
1815 introduction of TLS in release 3.20, but "sometimes" must have been rare
1816 because the tests only now provoked it.
1817
a444213a
PH
181846. Reset the locale to "C" after calling embedded Perl, in case it was changed
1819 (this can affect the format of dates).
1820
0ec020ea
PH
182147. exim_tidydb, when checking for the continued existence of a message for
1822 which it has found a message-specific retry record, was not finding
1823 messages that were in split spool directories. Consequently, it was
1824 deleting retry records that should have stayed in existence.
1825
b1206957
PH
182648. Steve fixed some bugs in eximstats.
1827
182849. The SPA authentication driver was not abandoning authentication and moving
1829 on to the next authenticator when an expansion was forced to fail,
1830 contradicting the general specification for all authenticators. Instead it
1831 was generating a temporary error. It now behaves as specified.
1832
26dd5a95
PH
183350. The default ordering of permitted cipher suites for GnuTLS was pessimal
1834 (the order specifies the preference for clients). The order is now AES256,
1835 AES128, 3DES, ARCFOUR128.
1836
343b2385
PH
183751. Small patch to Sieve code - explicitly set From: when generating an
1838 autoreply.
1839
1c5466b9
PH
184052. Exim crashed if a remote delivery caused a very long error message to be
1841 recorded - for instance if somebody sent an entire SpamAssassin report back
1842 as a large number of 550 error lines. This bug was coincidentally fixed by
1843 increasing the size of one of Exim's internal buffers (big_buffer) that
1844 happened as part of the Exiscan merge. However, to be on the safe side, I
1845 have made the code more robust (and fixed the comments that describe what
1846 is going on).
1847
55ee9ee3
PH
184853. Now that there can be additional text after "Completed" in log lines (if
1849 the queue_time_overall log selector is set), a one-byte patch to exigrep
1850 was needed to allow it to recognize "Completed" as not the last thing in
1851 the line.
1852
d38f8232
PH
185354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1854 patch that reportedly fixes this has been added. I am not expert enough to
1855 create a test for it. This is what the patch creator wrote:
1856
1857 "I found a little strange behaviour of ldap code when working with
1858 Windows 2003 AD Domain, where users was placed in more than one
1859 Organization Units. When I tried to give exim partial DN, the exit code
1860 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1861 But simultaneously result of request was absolutely normal ldap result,
1862 so I produce this patch..."
1863
3295e65b
PH
1864 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1865 REFERENCE, so I have modified the code to exclude the patch when that macro
1866 is not defined.
1867
7102e136
PH
186855. Some experimental protocols are using DNS PTR records for new purposes. The
1869 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1870 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1871 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1872 CAN-2005-0021
7102e136 1873
3ca0ba97
PH
187456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1875
c2bcbe20
PH
187657. Double the size of the debug message buffer (to 2048) so that more of very
1877 long debug lines gets shown.
1878
18ce445d
PH
187958. The exicyclog utility now does better if the number of log files to keep
1880 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1881
1f5b4c3d
PH
188259. Two changes related to the smtp_active_hostname option:
1883
1884 (1) $smtp_active_hostname is now available as a variable.
1885 (2) The default for smtp_banner uses $smtp_active_hostname instead
1886 of $primary_hostname.
1887
b975ba52
PH
188860. The host_aton() function is supposed to be passed a string that is known
1889 to be a valid IP address. However, in the case of IPv6 addresses, it was
1890 not checking this. This is a hostage to fortune. Exim now panics and dies
1891 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1892 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1893 components; fortuitously, this particular loophole had already been fixed
1894 by change 4.50/55 above.
1895
1896 If there are any other similar loopholes, the new check in host_aton()
1897 itself should stop them being exploited. The report I received stated that
1898 data on the command line could provoke the exploit when Exim was running as
1899 exim, but did not say which command line option was involved. All I could
1900 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1901 running as the user.
ea3a6f44 1902 CAN-2005-0021
85b87bc2
PH
1903
190461. There was a buffer overflow vulnerability in the SPA authentication code
1905 (which came originally from the Samba project). I have added a test to the
1906 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1907 CAN-2005-0022
b975ba52 1908
17ffcae7
PH
190962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1910 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1911
d95f9fdb
PH
191263. The daemon start-up calls getloadavg() while still root for those OS that
1913 need the first call to be done as root, but it missed one case: when
1914 deliver_queue_load_max is set with deliver_drop_privilege. This is
1915 necessary for the benefit of the queue runner, because there is no re-exec
1916 when deliver_drop_privilege is set.
1917
86b8287f
PH
191864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1919 This has been fixed.
1920
60dc5e56
PH
192165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1922 was in use, was not putting the data itself into the right store pool;
1923 consequently, it could be overwritten for a subsequent message in the same
1924 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1925 the caching.)
1926
533244af
PH
192766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1928
a5a28604
PH
192967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1930 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1931 the function were treating the return as a boolean value, which happened to
1932 work because 0=false and not-0=true, but is not correct code.
1933
7e634d24
PH
193468. The host_aton() function was not handling scoped IPv6 addresses (those
1935 with, for example, "%eth0" on the end) correctly.
1936
3e11c26b
PH
193769. Fixed some compiler warnings in acl.c for the bitmaps specified with
1938 negated items (that is, ~something) in unsigned ints. Some compilers
1939 apparently mutter when there is no cast.
1940
6729cf78
PH
194170. If an address verification called from an ACL failed, and did not produce a
1942 user-specific message (i.e. there was only a "system" message), nothing was
1943 put in $acl_verify_message. In this situation, it now puts the system
1944 message there.
1945
00f00ca5
PH
194671. Change 4.23/11 added synchronization checking at the start of an SMTP
1947 session; change 4.31/43 added the unwanted input to the log line - except
1948 that it did not do this in the start of session case. It now does.
1949
c9bdd01c
PH
195072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1951 This is wrong and can cause the other end to generate a synchronization
1952 error if it is another Exim or anything else that does the synchronization
1953 check. A QUIT command is no longer sent after a timeout.
1954
d43194df
PH
195573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1956 during host lookups.
1957
fe5b5d0b
PH
195874. The defer_ok option of callout verification was not working if it was used
1959 when verifying addresses in header lines, that is, for this case:
1960
1961 verify = header_sender/callout=defer_ok
1962
76a2d7ba
PH
196375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1964 those file descriptors could be used for SMTP connections. If anything
1965 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1966 could be sent to the SMTP client, causing chaos. The daemon now opens
1967 stdin, stdout, and stderr to /dev/null when it puts itself into the
1968 background.
1969
197076. Arrange for output from Perl's "warn" command to be written to Exim's main
1971 log by default. The user can override this with suitable Perl magic.
1972
04f7d5b9
PH
197377. The use of log_message on a "discard" ACL verb, which is supposed to add to
1974 the log message when discard triggers, was not working for the DATA ACL or
1975 for the non-SMTP ACL.
1976
bc60667e
PH
197778. Error message wording change in sieve.c.
1978
bb6e88ff
PH
197979. If smtp_accept_max_per_host was set, the number of connections could be
1980 restricted to fewer than expected, because the daemon was trying to set up
1981 a new connection before checking whether the processes handling previous
1982 connections had finished. The check for completed processes is now done
1983 earlier. On busy systems, this bug wouldn't be noticed because something
1984 else would have woken the daemon, and it would have reaped the completed
1985 process earlier.
1986
1e70f85b
PH
198780. If a message was submitted locally by a user whose login name contained one
1988 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1989 It caused a spool format error. I have fixed the spool reading code. A
1990 related problem was that the "from" clause in the Received: line became
1991 illegal because of the space(s). It is now covered by ${quote_local_part.
1992
199381. Included the latest eximstats from Steve (adds average sizes to HTML Top
1994 tables).
1995
4e01f9d6
PH
199682. Updated OS/Makefile-AIX as per message from Mike Meredith.
1997
1ee1cef2
PH
199883. Patch from Sieve maintainer to fix unterminated string problem in
1999 "vacation" handling.
2000
6e2b4ccc
PH
200184. Some minor changes to the Linux configuration files to help with other
2002 OS variants using glibc.
2003
8e669ac1
PH
200485. One more patch for Sieve to update vacation handling to latest spec.
2005
495ae4b0 2006
bbe902f0
PH
2007----------------------------------------------------
2008See the note above about the 4.44 and 4.50 releases.
2009----------------------------------------------------
2010
2011
2012Exim version 4.44
2013-----------------
2014
2015 1. Change 4.43/35 introduced a bug that caused file counts to be
2016 incorrectly computed when quota_filecount was set in an appendfile
2017 transport
2018
2019 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2020 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2021 place.
2022
2023 3. Give more explanation in the error message when the command for a transport
2024 filter fails to execute.
2025
2026 4. There are several places where Exim runs a non-Exim command in a
2027 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2028 was being done only for the command run by the queryprogram router. It is
2029 now done for all such subprocesses. The other cases are: ${run, transport
2030 filters, and the commands run by the lmtp and pipe transports.
2031
2032 5. Some older OS have a limit of 256 on the maximum number of file
2033 descriptors. Exim was using setrlimit() to set 1000 as a large value
2034 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2035 systems. I've change it so that if it can't get 1000, it tries for 256.
2036
2037 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2038 was an oversight, and furthermore, ever since the addition of extra
2039 controls (e.g. 4.43/32), the checks on when to allow different forms of
2040 "control" were broken. There should now be diagnostics for all cases when a
2041 control that does not make sense is encountered.
2042
2043 7. $recipients is now available in the predata ACL (oversight).
2044
2045 8. Tidy the search cache before the fork to do a delivery from a message
2046 received from the command line. Otherwise the child will trigger a lookup
2047 failure and thereby defer the delivery if it tries to use (for example) a
2048 cached ldap connection that the parent has called unbind on.
2049
2050 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2051 of $address_data from the recipient verification was clobbered by the
2052 sender verification.
2053
205410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2055 was its contents. (It was OK if the option was not defined at all.)
2056
205711. A "Completed" log line is now written for messages that are removed from
2058 the spool by the -Mrm option.
2059
206012. $host_address is now set to the target address during the checking of
2061 ignore_target_hosts.
2062
206313. When checking ignore_target_hosts for an ipliteral router, no host name was
2064 being passed; this would have caused $sender_host_name to have been used if
2065 matching the list had actually called for a host name (not very likely,
2066 since this list is usually IP addresses). A host name is now passed as
2067 "[x.x.x.x]".
2068
206914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2070 code that specifies a non-restarting handler (typically sigaction() in
2071 modern systems) in an attempt to fix a rare and obscure crash bug.
2072
207315. Narrowed the window for a race in the daemon that could cause it to ignore
2074 SIGCHLD signals. This is not a major problem, because they are used only to
2075 wake it up if nothing else does.
2076
207716. A malformed maildirsize file could cause Exim to calculate negative values
2078 for the mailbox size or file count. Odd effects could occur as a result.
2079 The maildirsize information is now recalculated if the size or filecount
2080 end up negative.
2081
208217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2083 support for a long time. Removed HAVE_SYS_VFS_H.
2084
ea3a6f44 208518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2086
208719. Allow an empty sender to be matched against a lookup in an address list.
2088 Previously the only cases considered were a regular expression, or an
2089 empty pattern.
2090
209120. Exim went into a mad DNS lookup loop when doing a callout where the
2092 host was specified on the transport, if the DNS lookup yielded more than
2093 one IP address.
2094
ea3a6f44
NM
209521. The RFC2047 encoding function was originally intended for short strings
2096 such as real names; it was not keeping to the 75-character limit for
2097 encoded words that the RFC imposes. It now respects the limit, and
2098 generates multiple encoded words if necessary. To be on the safe side, I
2099 have increased the buffer size for the ${rfc2047: expansion operator from
2100 1024 to 2048 bytes.
bbe902f0 2101
ea3a6f44
NM
210222. Failure to deliver a bounce message always caused it to be frozen, even if
2103 there was an errors_to setting on the router. The errors_to setting is now
2104 respected.
bbe902f0
PH
2105
210623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2107 canonical form (fully expanded) before being placed in
2108 $sender_host_address.
2109
211024. Updated eximstats to version 1.33
2111
ea3a6f44
NM
211225. Include certificate and key file names in error message when GnuTLS fails
2113 to set them up, because the GnuTLS error message doesn't include the name
2114 of the failing file when there is a problem reading it.
bbe902f0
PH
2115
211626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2117 As per change 25.
bbe902f0 2118
ea3a6f44
NM
211927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2120 (this can affect the format of dates).
bbe902f0 2121
ea3a6f44
NM
212228. exim_tidydb, when checking for the continued existence of a message for
2123 which it has found a message-specific retry record, was not finding
2124 messages that were in split spool directories. Consequently, it was
2125 deleting retry records that should have stayed in existence.
bbe902f0
PH
2126
212729. eximstats updated to version 1.35
2128 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2129 1.35 - bugfix such that pie charts by volume are generated correctly
2130
ea3a6f44
NM
213130. The SPA authentication driver was not abandoning authentication and moving
2132 on to the next authenticator when an expansion was forced to fail,
2133 contradicting the general specification for all authenticators. Instead it
2134 was generating a temporary error. It now behaves as specified.
bbe902f0 2135
ea3a6f44
NM
213631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2137 (the order specifies the preference for clients). The order is now AES256,
2138 AES128, 3DES, ARCFOUR128.
bbe902f0 2139
ea3a6f44
NM
214031. Small patch to Sieve code - explicitly set From: when generating an
2141 autoreply.
bbe902f0 2142
ea3a6f44
NM
214332. Exim crashed if a remote delivery caused a very long error message to be
2144 recorded - for instance if somebody sent an entire SpamAssassin report back
2145 as a large number of 550 error lines. This bug was coincidentally fixed by
2146 increasing the size of one of Exim's internal buffers (big_buffer) that
2147 happened as part of the Exiscan merge. However, to be on the safe side, I
2148 have made the code more robust (and fixed the comments that describe what
2149 is going on).
bbe902f0 2150
ea3a6f44
NM
215133. Some experimental protocols are using DNS PTR records for new purposes. The
2152 keys for these records are domain names, not reversed IP addresses. The
2153 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2154 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2155 CAN-2005-0021
2156
ea3a6f44
NM
215734. The host_aton() function is supposed to be passed a string that is known
2158 to be a valid IP address. However, in the case of IPv6 addresses, it was
2159 not checking this. This is a hostage to fortune. Exim now panics and dies
2160 if the condition is not met. A case was found where this could be provoked
2161 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2162 components; fortuitously, this particular loophole had already been fixed
2163 by change 4.50/55 or 4.44/33 above.
2164
2165 If there are any other similar loopholes, the new check in host_aton()
2166 itself should stop them being exploited. The report I received stated that
2167 data on the command line could provoke the exploit when Exim was running as
2168 exim, but did not say which command line option was involved. All I could
2169 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2170 running as the user.
bbe902f0
PH
2171 CAN-2005-0021
2172
ea3a6f44
NM
217335. There was a buffer overflow vulnerability in the SPA authentication code
2174 (which came originally from the Samba project). I have added a test to the
2175 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2176 CAN-2005-0022
2177
ea3a6f44
NM
217836. The daemon start-up calls getloadavg() while still root for those OS that
2179 need the first call to be done as root, but it missed one case: when
2180 deliver_queue_load_max is set with deliver_drop_privilege. This is
2181 necessary for the benefit of the queue runner, because there is no re-exec
2182 when deliver_drop_privilege is set.
bbe902f0 2183
ea3a6f44
NM
218437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2185 was in use, was not putting the data itself into the right store pool;
2186 consequently, it could be overwritten for a subsequent message in the same
2187 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2188 the caching.)
bbe902f0 2189
ea3a6f44
NM
219038. Sometimes the final signoff response after QUIT could fail to get
2191 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2192 < 0 before doing a fflush(). This bug looks as though it goes back to the
2193 introduction of TLS in release 3.20, but "sometimes" must have been rare
2194 because the tests only now provoked it.
bbe902f0
PH
2195
2196
495ae4b0
PH
2197Exim version 4.43
2198-----------------
2199
2200 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2201 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2202 Now it returns an integer. A number of calls were still expecting a T/F
2203 return. Fortuitously, in all cases, the tests worked in OK situations,
2204 which is the norm. However, things would have gone wrong on any write
2205 failures on the smtp file descriptor. This function is used when sending
2206 messages over SMTP and also when doing verify callouts.
2207
2208 2. When Exim is called to do synchronous delivery of a locally submitted
2209 message (the -odf or -odi options), it no longer closes stderr before doing
2210 the delivery.
2211
2212 3. Implemented the mua_wrapper option.
2213
2214 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2215
2216 5. Implemented the functions header_remove(), header_testname(),
2217 header_add_at_position(), and receive_remove_recipient(), and exported them
2218 to local_scan().
2219
2220 6. If an ACL "warn" statement specified the addition of headers, Exim already
2221 inserted X-ACL-Warn: at the start if there was no header name. However, it
2222 was not making this test for the second and subsequent header lines if
2223 there were newlines in the string. This meant that an invalid header could
2224 be inserted if Exim was badly configured.
2225
2226 7. Allow an ACL "warn" statement to add header lines at the start or after all
2227 the Received: headers, as well as at the end.
2228
2229 8. Added the rcpt_4xx retry error code.
2230
2231 9. Added postmaster_mailfrom=xxx to callout verification option.
2232
223310. Added mailfrom=xxxx to the callout verification option, for verify=
2234 header_sender only.
2235
223611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2237 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2238
223912. Inserted some casts to stop certain compilers warning when using pointer
2240 differences as field lengths or precisions in printf-type calls (mostly
2241 affecting debugging statements).
2242
224313. Added optional readline() support for -be (dynamically loaded).
2244
224514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2246 same clock tick as a message's arrival, so that its received time was the
2247 same as the "first fail" time on the retry record, and that message
2248 remained on the queue past the ultimate address timeout, every queue runner
2249 would try a delivery (because it was past the ultimate address timeout) but
2250 after another failure, the ultimate address timeout, which should have then
2251 bounced the address, did not kick in. This was a "< instead of <=" error;
2252 in most cases the first failure would have been in the next clock tick
2253 after the received time, and all would be well.
2254
225515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2256 being recognized when the domain list was tested by the match_domain
2257 condition in an expansion string.
2258
225916. Added the ${str2b64: operator.
2260
226117. Exim was always calling setrlimit() to set a large limit for the number of
2262 processes, without checking whether the existing limit was already
2263 adequate. (It did check for the limit on file descriptors.) Furthermore,
2264 errors from getrlimit() and setrlimit() were being ignored. Now they are
2265 logged to the main and panic logs, but Exim does carry on, to try to do its
2266 job under whatever limits there are.
2267
226818. Imported PCRE 5.0.
2269
227019. Trivial typo in log message " temporarily refused connection" (the leading
2271 space).
2272
227320. If the log selector return_path_on_delivery was set and an address was
2274 redirected to /dev/null, the delivery process crashed because it assumed
2275 that a return path would always be set for a "successful" delivery. In this
2276 case, the whole delivery is bypassed as an optimization, and therefore no
2277 return path is set.
2278
227921. Internal re-arrangement: the function for sending a challenge and reading
2280 a response while authentication was assuming a zero-terminated challenge
2281 string. It's now changed to take a pointer and a length, to allow for
2282 binary data in such strings.
2283
228422. Added the cyrus_sasl authenticator (code supplied by MBM).
2285
228623. Exim was not respecting finduser_retries when seeking the login of the
2287 uid under which it was called; it was always trying 10 times. (The default
2288 setting of finduser_retries is zero.) Also, it was sleeping after the final
2289 failure, which is pointless.
2290
229124. Implemented tls_on_connect_ports.
2292
229325. Implemented acl_smtp_predata.
2294
229526. If the domain in control=submission is set empty, Exim assumes that the
2296 authenticated id is a complete email address when it generates From: or
2297 Sender: header lines.
2298
229927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2300 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2301 chown and chgrp in /bin and hostname in /usr/bin.
2302
230328. Exim was keeping the "process log" file open after each use, just as it
2304 does for the main log. This opens the possibility of it remaining open for
2305 long periods when the USR1 signal hits a daemon. Occasional processlog
2306 errors were reported, that could have been caused by this. Anyway, it seems
2307 much more sensible not to leave this file open at all, so that is what now
2308 happens.
2309
231029. The long-running daemon process does not normally write to the log once it
2311 has entered its main loop, and it closes the log before doing so. This is
2312 so that log files can straightforwardly be renamed and moved. However,
2313 there are a couple of unusual error situations where the daemon does write
2314 log entries, and I had neglected to close the log afterwards.
2315
231630. The text of an SMTP error response that was received during a remote
2317 delivery was being truncated at 512 bytes. This is too short for some of
2318 the long messages that one sometimes sees. I've increased the limit to
2319 1024.
2320
232131. It is now possible to make retry rules that apply only when a message has a
2322 specific sender, in particular, an empty sender.
2323
232432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2325 it possible to be selective about when SMTP synchronization is enforced.
2326
232733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2328
232932. Implemented hosts_connection_nolog.
2330
233133. Added an ACL for QUIT.
2332
233334. Setting "delay_warning=" to disable warnings was not working; it gave a
2334 syntax error.
2335
233635. Added mailbox_size and mailbox_filecount to appendfile.
2337
233836. Added control = no_multiline_responses to ACLs.
2339
234037. There was a bug in the logic of the code that waits for the clock to tick
2341 in the case where the clock went backwards by a substantial amount such
2342 that the microsecond fraction of "now" was more than the microsecond
2343 fraction of "then" (but the whole seconds number was less).
2344
234538. Added support for the libradius Radius client library this is found on
2346 FreeBSD (previously only the radiusclient library was supported).
2347
2348
2349Exim version 4.42
2350-----------------
2351
2352 1. When certain lookups returned multiple values in the form name=value, the
2353 quoting of the values was not always being done properly. Specifically:
2354 (a) If the value started with a double quote, but contained no whitespace,
2355 it was not quoted.
2356 (b) If the value contained whitespace other than a space character (i.e.
2357 tabs or newlines or carriage returns) it was not quoted.
2358 This fix has been applied to the mysql and pgsql lookups by writing a
2359 separate quoting function and calling it from the lookup code. The fix
2360 should probably also be applied to nisplus, ibase and oracle lookups, but
2361 since I cannot test any of those, I have not disturbed their existing code.
2362
2363 2. A hit in the callout cache for a specific address caused a log line with no
2364 reason for rejecting RCPT. Now it says "Previous (cached) callout
2365 verification failure".
2366
2367 3. There was an off-by-one bug in the queryprogram router. An over-long
2368 return line was truncated at 256 instead of 255 characters, thereby
2369 overflowing its buffer with the terminating zero. As well as fixing this, I
2370 have increased the buffer size to 1024 (and made a note to document this).
2371
2372 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2373 when Exim is waiting for an SMTP response from a remote server, Exim
2374 restarts its select() call on the socket, thereby resetting its timeout.
2375 This is not a problem when such interrupts are rare. Somebody set up a cron
2376 job to run exiwhat every 2 minutes, which is less than the normal select()
2377 timeout (5 or 10 minutes). This meant that the select() timeout never
2378 kicked in because it was always reset. I have fixed this by comparing the
2379 time when an interrupt arrives with the time at the start of the first call
2380 to select(). If more time than the timeout has elapsed, the interrupt is
2381 treated as a timeout.
2382
2383 5. Some internal re-factoring in preparation for the addition of Sieve
2384 extensions (by MH). In particular, the "personal" test is moved to a
2385 separate function, and given an option for scanning Cc: and Bcc: (which is
2386 not set for Exim filters).
2387
2388 6. When Exim created an email address using the login of the caller as the
2389 local part (e.g. when creating a From: or Sender: header line), it was not
2390 quoting the local part when it contained special characters such as @.
2391
2392 7. Installed new OpenBSD configuration files.
2393
2394 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2395 try to make them clearer.
2396
2397 9. Callout options, other than the timeout value, were being ignored when
2398 verifying sender addresses in header lines. For example, when using
2399
2400 verify = header_sender/callout=no_cache
2401
2402 the cache was (incorrectly) being used.
2403
240410. Added a missing instance of ${EXE} to the exim_install script; this affects
2405 only the Cygwin environment.
2406
240711. When return_path_on_delivery was set as a log selector, if different remote
2408 addresses in the same message used different return paths and parallel
2409 remote delivery occurred, the wrong values would sometimes be logged.
2410 (Whenever a remote delivery process finished, the return path value from
2411 the most recently started remote delivery process was logged.)
2412
241312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2414 lines when AUTH and/or TLS are in use. This is the "received protocol"
2415 field. Exim used to use "asmtp" for authenticated SMTP, without any
2416 indication (in the protocol name) for TLS use. Now it follows the RFC and
2417 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2418 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2419 names appear in log lines as well as in Received: header lines.
2420
242113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2422 extensions, and comparison tests, and to fix some bugs.
2423
242414. Changes to the "personal" filter test:
2425
2426 (1) The test was buggy in that it was just doing the equivalent of
2427 "contains" tests on header lines. For example, if a user's address was
2428 anne@some.where, the "personal" test would incorrectly be true for
2429
2430 To: susanne@some.where
2431
2432 This test is now done by extracting each address from the header in turn,
2433 and checking the entire address. Other tests that are part of "personal"
2434 are now done using regular expressions (for example, to check local parts
2435 of addresses in From: header lines).
2436
2437 (2) The list of non-personal local parts in From: addresses has been
2438 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2439 taken from the Sieve specification recommendations.
2440
2441 (3) If the message contains any header line starting with "List-" it is
2442 treated as non-personal.
2443
2444 (4) The test for "circular" in the Subject: header line has been removed
2445 because it now seems ill-conceived.
2446
244715. Minor typos in src/EDITME comments corrected.
2448
244916. Installed latest exipick from John Jetmore.
2450
245117. If headers_add on a router specified a text string that was too long for
2452 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2453 of string_sprintf() is now avoided.
2454
245518. $message_body_size was not set (it was always zero) when running the DATA
2456 ACL and the local_scan() function.
2457
245819. For the "mail" command in an Exim filter, no default was being set for
2459 the once_repeat time, causing a random time value to be used if "once" was
2460 specified. (If the value happened to be <= 0, no repeat happened.) The
2461 default is now 0s, meaning "never repeat". The "vacation" command was OK
2462 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2463 (I found it when inspecting the code).
2464
246520. There is now an overall timeout for performing a callout verification. It
2466 defaults to 4 times the callout timeout, which applies to individual SMTP
2467 commands during the callout. The overall timeout applies when there is more
2468 than one host that can be tried. The timeout is checked before trying the
2469 next host. This prevents very long delays if there are a large number of
2470 hosts and all are timing out (e.g. when the network connections are timing
2471 out). The value of the overall timeout can be changed by specifying an
2472 additional sub-option for "callout", called "maxwait". For example:
2473
2474 verify = sender/callout=5s,maxwait=20s
2475
247621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2477 to the end before writing, but this should make it even safer).
2478
247922. Exim was forgetting that it had advertised PIPELINING for the second and
2480 subsequent messages on an SMTP connection. It was also not resetting its
2481 memory on STARTTLS and an internal HELO.
2482
248323. When Exim logs an SMTP synchronization error within a session, it now
2484 records whether PIPELINING has been advertised or not.
2485
248624. Added 3 instances of "(long int)" casts to time_t variables that were being
2487 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2488 rather than long int.
2489
249025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2491
249226. Added the never_mail option to autoreply.
2493
2494
2495Exim version 4.41
2496-----------------
2497
2498 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2499 crash if the getsockname() call failed; this can happen if a connection is
2500 closed very soon after it is established. The problem was simply in the
2501 order in which certain operations were done, causing Exim to try to write
2502 to the SMTP stream before it had set up the file descriptor. The bug has
2503 been fixed by making things happen in the correct order.
2504
2505
2506Exim version 4.40
2507-----------------
2508
2509 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2510 before the connection was closed, thus losing the rejection response.
2511
2512 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2513 some early Solaris releases, but causes trouble in current releases where
2514 socklen_t is defined.
2515
2516 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2517 always exist.
2518
2519 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2520 configured.
2521
2522 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2523 that releasing the top of it at the end releases what was used for sub-
2524 expansions (unless the block got too big). However, discard this block if
2525 the first thing is a variable or header, so that we can use its block when
2526 it is dynamic (useful for very large $message_headers, for example).
2527
2528 6. Lookups now cache *every* query, not just the most recent. A new, separate
2529 store pool is used for this. It can be recovered when all lookup caches are
2530 flushed. Lookups now release memory at the end of their result strings.
2531 This has involved some general refactoring of the lookup sources.
2532
2533 7. Some code has been added to the store_xxx() functions to reduce the amount
2534 of flapping under certain conditions.
2535
2536 8. log_incoming_interface used to affect only the <= reception log lines. Now
2537 it causes the local interface and port to be added to several more SMTP log
2538 lines, for example "SMTP connection from", and rejection lines.
2539
2540 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2541
254210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2543
254411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2545 could be overwritten at the end of the current message (or the start of a
2546 new message if it was set in a HELO ACL). The value is now preserved for
2547 the duration of the SMTP connection.
2548
254912. If a transport had a headers_rewrite setting, and a matching header line
2550 contained an unqualified address, that address was qualified, even if it
2551 did not match any rewriting rules. The underlying bug was that the values
2552 of the flags that permit the existence of unqualified sender and recipient
2553 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2554 non-local messages, and by -bnq for local messages) were not being
2555 preserved with the message after it was received.
2556
255713. When Exim was logging an SMTP synchronization error, it could sometimes log
2558 "next input=" as part of the text comprising the host identity instead of
2559 the correct text. The code was using the same buffer for two different
2560 strings. However, depending on which order the printing function evaluated
2561 its arguments, the bug did not always show up. Under Linux, for example, my
2562 test suite worked just fine.
2563
256414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2565 doesn't work with some older versions of Perl. It has been changed to "my",
2566 which in any case is probably the better facility to use.
2567
256815. A really picky compiler found some instances of statements for creating
2569 error messages that either had too many or two few arguments for the format
2570 string.
2571
257216. The size of the buffer for calls to the DNS resolver has been increased
2573 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2574 for addresses that have a lot of PTR records. This alleviates a problem; it
2575 does not fully solve it.
2576
257717. A dnsdb lookup for PTR records that receives more data than will fit in the
2578 buffer now truncates the list and logs the incident, which is the same
2579 action as happens when Exim is looking up a host name and its aliases.
2580 Previously in this situation something unpredictable would happen;
2581 sometimes it was "internal error: store_reset failed".
2582
258318. If a server dropped the connection unexpectedly when an Exim client was
2584 using GnuTLS and trying to read a response, the client delivery process
2585 crashed while trying to generate an error log message.
2586
258719. If a "warn" verb in an ACL added multiple headers to a message in a single
2588 string, for example:
2589
2590 warn message = H1: something\nH2: something
2591
2592 the text was added as a single header line from Exim's point of view
2593 though it ended up OK in the delivered message. However, searching for the
2594 second and subsequent header lines using $h_h2: did not work. This has been
2595 fixed. Similarly, if a system filter added multiple headers in this way,
2596 the routers could not see them.
2597
259820. Expanded the error message when iplsearch is called with an invalid key to
2599 suggest using net-iplsearch in a host list.
2600
260121. When running tests using -bh, any delays imposed by "delay" modifiers in
2602 ACLs are no longer actually imposed (and a message to that effect is
2603 output).
2604
260522. If a "gecos" field in a passwd entry contained escaped characters, in
2606 particular, if it contained a \" sequence, Exim got it wrong when building
2607 a From: or a Sender: header from that name. A second bug also caused
2608 incorrect handling when an unquoted " was present following a character
2609 that needed quoting.
2610
261123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2612 was not being matched caselessly.
2613
261424. Arranged for all hyphens in the exim.8 source to be escaped with
2615 backslashes.
2616
261725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2618 properly. Recipient callout cache records were still being keyed to include
2619 the sender, even when use_sender was set false. This led to far more
2620 callouts that were necessary. The sender is no longer included in the key
2621 when use_sender is false.
2622
262326. Added "control = submission" modifier to ACLs.
2624
262527. Added the ${base62d: operator to decode base 62 numbers.
2626
262728. dnsdb lookups can now access SRV records.
2628
262929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2630 the configuration file.
2631
263230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2633 (-v) mode. This makes the output for a verbose queue run more intelligible.
2634
263531. Added a use_postmaster feature to recipient callouts.
2636
263732. Added the $body_zerocount variable, containing the number of binary zero
2638 bytes in the message body.
2639
264033. The time of last modification of the "new" subdirectory is now used as the
2641 "mailbox time last read" when there is a quota error for a maildir
2642 delivery.
2643
264434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2645
264635. Added +ignore_unknown as a special item in host lists.
2647
264836. Code for decoding IPv6 addresses in host lists is now included, even if
2649 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2650 address was recognized as an IP address, but was then not correctly decoded
2651 into binary, causing unexpected and incorrect effects when compared with
2652 another IP address.
2653
2654
2655Exim version 4.34
2656-----------------
2657
2658 1. Very minor rewording of debugging text in manualroute to say "list of
2659 hosts" instead of "hostlist".
2660
2661 2. If verify=header_syntax was set, and a header line with an unqualified
2662 address (no domain) and a large number of spaces between the end of the
2663 name and the colon was received, the reception process suffered a buffer
2664 overflow, and (when I tested it) crashed. This was caused by some obsolete
2665 code that should have been removed. The fix is to remove it!
2666
2667 3. When running in the test harness, delay a bit after writing a bounce
2668 message to get a bit more predictability in the log output.
2669
2670 4. Added a call to search_tidyup() just before forking a reception process. In
2671 theory, someone could use a lookup in the expansion of smtp_accept_max_
2672 per_host which, without the tidyup, could leave open a database connection.
2673
2674 5. Added the variables $recipient_data and $sender_data which get set from a
2675 lookup success in an ACL "recipients" or "senders" condition, or a router
2676 "senders" option, similar to $domain_data and $local_part_data.
2677
2678 6. Moved the writing of debug_print from before to after the "senders" test
2679 for routers.
2680
2681 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2682 problems for message scanning, either using a data ACL, or using
2683 local_scan() because the Received: header was not generated till after they
2684 were called (in order to set the time as the time of reception completion).
2685 I have revised the way this works. The header is now generated after the
2686 body is received, but before the ACL or local_scan() are called. After they
2687 are run, the timestamp in the header is updated.
2688
2689
2690Exim version 4.33
2691-----------------
2692
2693 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2694 before starting a queue runner without re-exec. This happened only when
2695 deliver_drop_privilege was set or when the Exim user was set to root. The
2696 effect of the bug was that timeouts during subsequent deliveries caused
2697 crashes instead of being properly handled. The handler is now left at its
2698 default (and expected) setting.
2699
2700 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2701 message, again when deliver_drop_privilege is set or Exim is run as root.
2702 The bug described in (1) was not present in this case, but the tidying up
2703 of the other signals was missing. I have made the two cases consistent.
2704
2705 3. The ignore_target_hosts setting on a manualroute router was being ignored
2706 for hosts that were looked up using the /MX notation.
2707
2708 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2709 in domain lists.
2710
2711 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2712 operated on the sender address. After changing the $sender_address to <>
2713 for the sender address verify, Exim was re-instated it as the original
2714 (before rewriting) address, but remembering that it had rewritten it, so it
2715 wasn't rewriting it again. This bug also had the effect of breaking the
2716 sender address verification caching when the sender address was rewritten.
2717
2718 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2719 This has been changed so that if the ip literal address matches
2720 ignore_target_hosts, the router declines.
2721
2722 7. Added expansion conditions match_domain, match_address, and match_local_
2723 part (NOT match_host).
2724
2725 8. The placeholder for the Received: header didn't have a length field set.
2726
2727 9. Added code to Exim itself and to exim_lock to test for a specific race
2728 condition that could lead to file corruption when using MBX delivery. The
2729 issue is with the lockfile that is created in /tmp. If this file is removed
2730 after a process has opened it but before that process has acquired a lock,
2731 there is the potential for a second process to recreate the file and also
2732 acquire a lock. This could lead to two Exim processes writing to the file
2733 at the same time. The added code performs the same test as UW imapd; it
2734 checks after acquiring the lock that its file descriptor still refers to
2735 the same named file.
2736
273710. The buffer for building added header lines was of fixed size, 8192 bytes.
2738 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2739 when Exim is built.
2740
274111. Added the smtp_active_hostname option. If used, this will typically be made
2742 to depend on the incoming interface address. Because $interface_address is
2743 not set up until the daemon has forked a reception process, error responses
2744 that can happen earlier (such as "too many connections") no longer contain
2745 a host name.
2746
274712. If an expansion in a condition on a "warn" statement fails because a lookup
2748 defers, the "warn" statement is abandoned, and the next ACL statement is
2749 processed. Previously this caused the whole ACL to be aborted.
2750
275113. Added the iplsearch lookup type.
2752
275314. Added ident_timeout as a log selector.
2754
275515. Added tls_certificate_verified as a log selector.
2756
275716. Added a global option tls_require_ciphers (compare the smtp transport
2758 option of the same name). This controls incoming TLS connections.
2759
276017. I finally figured out how to make tls_require_ciphers do a similar thing
2761 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2762 before starting the TLS session.
2763
276418. Tabs are now shown as \t in -bP output.
2765
276619. If the log selector return_path_on_delivery was set, Exim crashed when
2767 bouncing a message because it had too many Received: header lines.
2768
276920. If two routers both had headers_remove settings, and the first one included
2770 a superfluous trailing colon, the final name in the first list and the
2771 first name in the second list were incorrectly joined into one item (with a
2772 colon in the middle).
2773
2774
2775Exim version 4.32
2776-----------------
2777
2778 1. Added -C and -D options to the exinext utility, mainly to make it easier
2779 to include in the automated testing, but these could be helpful when
2780 multiple configurations are in use.
2781
2782 2. The exinext utility was not formatting the output nicely when there was
2783 an alternate port involved in the retry record key, nor when there was a
2784 message id as well (for retries that were specific to a specific message
2785 and a specific host). It was also confused by IPv6 addresses, because of
2786 the additional colons they contain. I have fixed the IPv4 problem, and
2787 patched it up to do a reasonable job for IPv6.
2788
2789 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2790 delivery, the log line now contains "pipelined" if PIPELINING was used.
2791
2792 4. An SMTP transport process used to panic and die if the bind() call to set
2793 an explicit outgoing interface failed. This has been changed; it is now
2794 treated in the same way as a connect() failure.
2795
2796 5. A reference to $sender_host_name in the part of a conditional expansion
2797 that was being skipped was still causing a DNS lookup. This no longer
2798 occurs.
2799
2800 6. The def: expansion condition was not recognizing references to header lines
2801 that used bh_ and bheader_.
2802
2803 7. Added the _cache feature to named lists.
2804
2805 8. The code for checking quota_filecount in the appendfile transport was
2806 allowing one more file than it should have been.
2807
2808 9. For compatibility with Sendmail, the command line option
2809
2810 -prval:sval
2811
2812 is equivalent to
2813
2814 -oMr rval -oMs sval
2815
2816 and sets the incoming protocol and host name (for trusted callers). The
2817 host name and its colon can be omitted when only the protocol is to be set.
2818 Note the Exim already has two private options, -pd and -ps, that refer to
2819 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2820 "s", but I don't think that's a major issue.
2821
282210. A number of refactoring changes to the code, none of which should affect
2823 Exim's behaviour:
2824
2825 (a) The number of logging options was getting close to filling up the
2826 32-bit word that was used as a bit map. I have split them into two classes:
2827 those that are passed in the argument to log_write(), and those that are
2828 only ever tested independently outside of that function. These are now in
2829 separate 32-bit words, so there is plenty of room for expansion again.
2830 There is no change in the user interface or the logging behaviour.
2831
2832 (b) When building, for example, log lines, the code previously used a
2833 macro that called string_cat() twice, in order to add two strings. This is
2834 not really sufficiently general. Furthermore, there was one instance where
2835 it was actually wrong because one of the argument was used twice, and in
2836 one call a function was used. (As it happened, calling the function twice
2837 did not affect the overall behaviour.) The macro has been replaced by a
2838 function that can join an arbitrary number of extra strings onto a growing
2839 string.
2840
2841 (c) The code for expansion conditions now uses a table and a binary chop
2842 instead of a serial search (which was left over from when there were very
2843 few conditions). Also, it now recognizes conditions like "pam" even when
2844 the relevant support is not compiled in: a suitably worded error message is
2845 given if an attempt is made to use such a condition.
2846
284711. Added ${time_interval:xxxxx}.
2848
284912. A bug was causing one of the ddress fields not to be passed back correctly
2850 from remote delivery subprocesses. The field in question was not being
2851 subsequently used, so this caused to problems in practice.
2852
285313. Added new log selectors queue_time and deliver_time.
2854
285514. Might have fixed a bug in maildirsizefile handling that threw up
2856 "unexpected character" debug warnings, and recalculated the data
2857 unnecessarily. In any case, I expanded the warning message to give more
2858 information.
2859
286015. Added the message "Restricted characters in address" to the statements in
2861 the default ACL that block characters like @ and % in local parts.
2862
286316. Change 71 for release 4.31 proved to be much less benign that I imagined.
2864 Three changes have been made:
2865
2866 (a) There was a serious bug; a negative response to MAIL caused the whole
2867 recipient domain to be cached as invalid, thereby blocking all messages
2868 to all local parts at the same domain, from all senders. This bug has
2869 been fixed. The domain is no longer cached after a negative response to
2870 MAIL if the sender used is not empty.
2871
2872 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2873 been restored.
2874
2875 (c) A new callout option, "use_sender" has been added for people who want
2876 the modified behaviour.
2877
2878
2879Exim version 4.31
2880-----------------
2881
2882 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2883 Larry Rosenman.
2884
2885 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2886 indeed breaks things for older releases.
2887
2888 3. Added additional logging to the case where there is a problem reading data
2889 from a filter that is running in a subprocess using a pipe, in order to
2890 try to track down a specific problem.
2891
2892 4. Testing facility fudge: when running in the test harness and attempting
2893 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2894 getting "No route to host". Convert this to a timeout.
2895
2896 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2897 warning.
2898
2899 6. Some OS don't have socklen_t but use size_t instead. This affects the
2900 fifth argument of getsockopt() amongst other things. This is now
2901 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2902 can be set for individual OS. I have set it for SunOS5, OSF1, and
2903 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2904 some earlier ones do not.
2905
2906 7. Change 4.30/15 was not doing the test caselessly.
2907
2908 8. The standard form for an IPv6 address literal was being rejected by address
2909 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2910 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2911 this, as well as the form without the "IPv6" on the front (but only when
2912 address literals are enabled, of course).
2913
2914 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2915
291610. Exim crashed if a message with an empty sender address specified by -f
2917 encountered a router with an errors_to setting. This could be provoked only
2918 by a command such as
2919
2920 exim -f "" ...
2921
2922 where an empty string was supplied; "<>" did not hit this bug.
2923
292411. Installed PCRE release 4.5.
2925
292612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2927 remained set. It is now erased.
2928
292913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2930 times from message ids (which are base 36 rather than the normal 62).
2931
293214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2933 were being counted as actual protocol errors, and logged if the log
2934 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2935 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2936 and DATA following a set of rejected RCPTs do not count as protocol errors.
2937 In other words, Exim assumes they were pipelined, though this may not
2938 actually be the case. Of course, in all cases the client gets an
2939 appropriate error code.
2940
294115. If a lookup fails in an ACL condition, a message about the failure may
2942 be available; it is used if testing the ACL cannot continue, because most
2943 such messages specify what the cause of the deferral is. However, some
2944 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2945 that caused an old message to be retained and used if a later statement
2946 caused a defer, replacing the real cause of the deferral.
2947
294816. If an IP address had so many PTR records that the DNS lookup buffer
2949 was not large enough to hold them, Exim could crash while trying to process
2950 the truncated data. It now detects and logs this case.
2951
295217. Further to 4.21/58, another change has been made: if (and only if) the
2953 first line of a message (the first header line) ends with CRLF, a bare LF
2954 in a subsequent header line has a space inserted after it, so as not to
2955 terminate the header.
2956
295718. Refactoring: tidied an ugly bit of code in appendfile that copied data
2958 unnecessarily, used atoi() instead of strtol(), and didn't check the
2959 termination when getting file sizes from file names by regex.
2960
296119. Completely re-implemented the support for maildirsize files, in the light
2962 of a number of problems with the previous contributed implementation
2963 (4.30/29). In particular:
2964
2965 . If the quota is zero, the maildirsize file is maintained, but no quota is
2966 imposed.
2967
2968 . If the maildir directory does not exist, it is created before any attempt
2969 to write a maildirsize file.
2970
2971 . The quota value in the file is just a cache; if the quota is changed in
2972 the transport, the new value overrides.
2973
2974 . A regular expression is available for excluding directories from the
2975 count.
2976
297720. The autoreply transport checks the characters in options that define the
2978 message's headers; it allows continued headers, but it was checking with
2979 isspace() after an embedded newline instead of explicitly looking for a
2980 space or a tab.
2981
298221. If all the "regular" hosts to which an address was routed had passed their
2983 expiry times, and had not reached their retry times, the address was
2984 bounced, even if fallback hosts were defined. Now Exim should go on to try
2985 the fallback hosts.
2986
298722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2988 equivalent code in the SMTP transport. Some hosts send humungous responses
2989 to HELO/EHLO, more than 1024 it seems.
2990
299123. Refactoring: code in filter.c used (void *) for "any old type" but this
2992 gives compiler warnings in some environments. I've now done it "properly",
2993 using a union.
2994
299524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2996 (because of problems with the built-in one) was declared to return uschar *
2997 instead of char *, causing compiler failure.
2998
299925. Fixed a file descriptor leak when processing alias/forward files.
3000
300126. Fixed a minor format string issue in dbfn.c.
3002
300327. Typo in exim.c: ("dmbnz" for "dbmnz").
3004
300528. If a filter file refered to $h_xxx or $message_headers, and the headers
3006 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3007 become corrupted.
3008
300929. When a sender address is verified, it is cached, to save repeating the test
3010 when there is more than one recipient in a message. However, when the
3011 verification involves a callout, it is possible for different callout
3012 options to be set for different recipients. It is too complicated to keep
3013 track of this in the cache, so now Exim always runs a verification when a
3014 callout is required, relying on the callout cache for the optimization.
3015 The overhead is duplication of the address routing, but this should not be
3016 too great.
3017
301830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3019 to be verified with callout=postmaster, and the main callout worked but the
3020 postmaster check failed, the verification correctly failed. However, if a
3021 subsequent RCPT command asked for sender verification *without* the
3022 postmaster check, incorrect caching caused this verification also to fail,
3023 incorrectly.
3024
302531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3026 it was not caching the DNS options (qualify_single, search_parents) that
3027 were used when the lookup failed. A subsequent lookup with different
3028 options therefore always gave the same answer, though there were cases
3029 where it should not have. (Example: a "domains = !$mx_any" option on a
3030 dnslookup router: the "domains" option is always processed without any
3031 widening, but the router might have qualify_single set.) Now Exim uses the
3032 cached value only when the same options are set.
3033
303432. Added John Jetmore's "exipick" utility to the distribution.
3035
303633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3037 than a timeout (e.g. a certificate is required, and is not provided), an
3038 Exim server now closes the connection immediately. Previously it waited for
3039 the client to close - but if the client is SSL, it seems that they each
3040 wait for each other, leading to a delay before one of them times out.
3041
304234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3043 maintained 0.8.x compatibility because I don't think many are using it, and
3044 it is clearly obsolete.
3045
304635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3047 transport.
3048
304936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3050 client certificate was expired. A simple patch fixes this, though I don't
3051 understand the full logic of why the verify callback is called multiple
3052 times.
3053
305437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3055 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3056 which causes problems with some clients (such as the Certicom SSL Plus
3057 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3058 disables the coutermeasure allowing Eudora to connect."
3059
306038. Exim was not checking that a write() to a log file succeeded. This could
3061 lead to Bad Things if a log got too big, in particular if it hit a file
3062 size limit. Exim now panics and dies if it cannot write to a log file, just
3063 as it does if it cannot open a log file.
3064
306539. Modified OS/Makefile-Linux so that it now contains
3066
3067 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3068
3069 The two -D definitions ensure that Exim is compiled with large file
3070 support, which makes it possible to handle log files that are bigger than
3071 2^31.
3072
307340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3074 instance) a domain was checked against a named list that involved a lookup,
3075 causing $domain_data to be set, then another domain was checked against the
3076 same list, then the first domain was re-checked, the value of $domain_data
3077 after the final check could be wrong. In particular, if the second check
3078 failed, it could be set empty. This bug probably also applied to
3079 $localpart_data.
3080
308141. The strip_trailing_dot option was not being applied to the address given
3082 with the -f command-line option.
3083
308442. The code for reading a message's header from the spool was incrementing
3085 $received_count, but never initializing it. This meant that the value was
3086 incorrect (doubled) while delivering a message in the same process in which
3087 it was received. In the most common configuration of Exim, this never
3088 happens - a fresh exec is done - but it can happen when
3089 deliver_drop_privilege is set.
3090
309143. When Exim logs an SMTP synchronization error - client data sent too soon -
3092 it now includes up to 150 characters of the unexpected data in the log
3093 line.
3094
309544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3096 and building data strings. The size of both of these buffers was 10 000
3097 bytes - far larger than anybody would *ever* want, thought I. Needless to
3098 say, somebody hit the limit. I have increased the maximum line length to
3099 20 000 and the maximum data length of concatenated lines to 100 000. I have
3100 also fixed two bugs, because there was no checking on these buffers. Tsk,
3101 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3102 buffer is too small.
3103
310445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3105 lsearch lookups. Now it does.
3106
310746. When parsing a route_list item in a manualroute router, a fixed-length
3108 buffer was used for the list of hosts. I made this 1024 bytes long,
3109 thinking that nobody would ever have a list of hosts that long. Wrong.
3110 Somebody had a whole pile of complicated expansion conditions, and the
3111 string was silently truncated, leading to an expansion error. It turns out
3112 that it is easier to change to an unlimited length (owing to other changes
3113 that have happened since this code was originally written) than to build
3114 structure for giving a limitation error. The length of the item that
3115 expands into the list of hosts is now unlimited.
3116
311747. The lsearch lookup could not handle data where the length of text line was
3118 more than 4095 characters. Such lines were truncated, leading to shortened
3119 data being returned. It should now handle lines of any length.
3120
312148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3122 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3123 ACL").
3124
312549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3126 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3127 no longer happens in comment lines. A list of replacements is now placed
3128 at the head of all of the source files, except those whose only change is
3129 to replace PERL_COMMAND in the very first #! line.
3130
313150. Replaced the slow insertion sort in queue.c, for sorting the list of
3132 messages on the queue, with a bottom-up merge sort, using code contributed
3133 by Michael Haardt. This should make operations like -bp somewhat faster on
3134 large queues. It won't affect queue runners, except when queue_run_in_order
3135 is set.
3136
313751. Installed eximstats 1.31 in the distribution.
3138
313952. Added support for SRV lookups to the dnslookup router.
3140
314153. If an ACL referred to $message_body or $message_body_end, the value was not
3142 reset for any messages that followed in the same SMTP session.
3143
314454. The store-handling optimization for building very long strings was not
3145 differentiating between the different store pools. I don't think this
3146 actually made any difference in practice, but I've tidied it.
3147
314855. While running the routers to verify a sender address, $sender_address
3149 was still set to the sender address. This is wrong, because when routing to
3150 send a bounce to the sender, it would be empty. Therefore, I have changed
3151 it so that, while verifying a sender address, $sender_address is set to <>.
3152 (There is no change to what happens when verifying a recipient address.)
3153
315456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3155 target A or AAAA records (if not already returned) without resetting the
3156 qualify_single or search_parents options of the DNS resolver. These are
3157 inappropriate in this case because the targets of MX and SRV records must
3158 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3159 target that, when qualified, matched something in the local domain. These
3160 two options are now turned off when doing these lookups.
3161
316257. It seems that at least some releases of Reiserfs (which does not have the
3163 concept of a fixed number of inodes) returns zero and not -1 for the
3164 number of available inodes. This interacted badly with check_spool_inodes,
3165 which assumed that -1 was the "no such thing" setting. What I have done is
3166 to check that the total number of inodes is greater than zero before doing
3167 the test of how many are available.
3168
316958. When a "warn" ACL statement has a log_message modifier, the message is
3170 remembered, and not repeated. This is to avoid a lot of repetition when a
3171 message has many recipients that cause the same warning to be written.
3172 Howewer, Exim was preserving the list of already written lines for an
3173 entire SMTP session, which doesn't seem right. The memory is now reset if a
3174 new message is started.
3175
317659. The "rewrite" debugging flag was not showing the result of rewriting in the
3177 debugging output unless log_rewrite was also set.
3178
317960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3180 of (int)(handle) when we know that handle contains (void *)(-1).
3181
318261. The Exim daemon panic-logs an error return when it closes the incoming
3183 connection. However "connection reset by peer" seems to be common, and
3184 isn't really an error worthy of noting specially, so that particular error
3185 is no long logged.
3186
318762. When Exim is trying to find all the local interfaces, it used to panic and
3188 die if the ioctl to get the interface flags failed. However, it seems that
3189 on at least one OS (Solaris 9) it is possible to have an interface that is
3190 included in the list of interfaces, but for which you get a failure error
3191 for this call. This happens when the interface is not "plumbed" into a
3192 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3193 failure of the "get flags" call assumes that the interface is down.
3194
319563. Added a ${eval10: operator, which assumes all numbers are decimal. This
3196 makes life easier for people who are doing arithmetic on fields extracted
3197 from dates, where you often get leading zeros that should not be
3198 interpreted as octal.
3199
320064. Added qualify_domain to the redirect router, to override the global
3201 setting.
3202
320365. If a pathologically long header line contained very many addresses (the
3204 report of this problem mentioned 10 000) and each of them was rewritten,
3205 Exim could use up a very large amount of memory. (It kept on making new
3206 copies of the header line as it rewrote, and never released the old ones.)
3207 At the expense of a bit more processing, the header rewriting function has
3208 been changed so that it no longer eats memory in this way.
3209
321066. The generation of the Received: header has been moved from the time that a
3211 message starts to be received, to the time that it finishes. The timestamp
3212 in the Received: header should now be very close to that of the <= log
3213 line. There are two side-effects of this change:
3214
3215 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3216 logged header lines no longer include the local Received: line, because
3217 it has not yet been created. The same applies to a copy of the message
3218 that is returned to a non-SMTP sender when a message is rejected.
3219
3220 (b) When a filter file is tested using -bf, no additional Received: header
3221 is added to the test message. After some thought, I decided that this
3222 is a bug fix.
3223
3224 This change does not affect the value of $received_for. It is still set
3225 after address rewriting, but before local_scan() is called.
3226
322767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3228
322968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3230 gave an unhelpful panic error message, and a defer error. I have managed to
3231 change this behaviour so that it now rejects any supplied certificate,
3232 which seems right, as the list of acceptable certificates is empty.
3233
323469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3235 gave an unhelpful defer error. I have not managed to make this reject any
3236 supplied certificates, but the error message it gives is "no certificate
3237 supplied", which is not helpful.
3238
323970. exigrep's output now also includes lines that are not associated with any
3240 message, but which match the given pattern. Implemented by a patch from
3241 Martin Sluka, which also tidied up the Perl a bit.
3242
324371. Recipient callout verification, like sender verification, was using <> in
3244 the MAIL FROM command. This isn't really the right thing, since the actual
3245 sender may affect whether the remote host accepts the recipient or not. I
3246 have changed it to use the actual sender in the callout; this means that
3247 the cache record is now keyed on a recipient/sender pair, not just the
3248 recipient address. There doesn't seem to be a real danger of callout loops,
3249 since a callout by the remote host to check the sender would use <>.
3250 [SEE ABOVE: changed after hitting problems.]
3251
325272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3253 temporary errors. However, in the case of such a code being given after
3254 the end of a data transmission (i.e. after ".") Exim was failing to write
3255 a retry record for the message. (Yes, there was some broken host that was
3256 actually sending 8xx at this point.)
3257
325873. An unknown lookup type in a host list could cause Exim to panic-die when
3259 the list was checked. (An example that provoked this was putting <; in the
3260 middle of a list instead of at the start.) If this happened during a DATA
3261 ACL check, a -D file could be left lying around. This kind of configuration
3262 error no longer causes Exim to die; instead it causes a defer errror. The
3263 incident is still logged to the main and panic logs.
3264
326574. Buglet left over from Exim 3 conversion. The message "too many messages
3266 in one connection" was written to the rejectlog but not the mainlog, except
3267 when address rewriting (yes!) was being logged.
3268
326975. Added write_rejectlog option.
3270
327176. When a system filter was run not as root (that is, when system_filter_user
3272 was set), the values of the $n variables were not being returned to the
3273 main process; thus, they were not subsequently available in the $sn
3274 variables.
3275
327677. Added +return_path_on_delivery log selector.
3277
327878. A connection timeout was being treated differently from recipients deferred
3279 when testing hosts_max_try with a message that was older than the host's
3280 retry timeout. (The host should not be counted, thus allowing all hosts to
3281 be tried at least once before bouncing.) This may have been the cause of an
3282 occasionally reported bug whereby a message would remain on the queue
3283 longer than the retry timeout, but would be bounced if a delivery was
3284 forced. I say "may" because I never totally pinned down the problem;
3285 setting up timeout/retry tests is difficult. See also the next item.
3286
328779. The ultimate address timeout was not being applied to errors that involved
3288 a combination of host plus message (for example, a timeout on a MAIL
3289 command). When an address resolved to a number of possible hosts, and they
3290 were not all tried for each delivery (e.g. because of hosts_max_try), a
3291 message could remain on the queue longer than the retry timeout.
3292
329380. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3294 Haardt.
3295
329681. Fixed an obscure SMTP outgoing bug which required at least the following
3297 conditions: (a) there was another message waiting for the same server;
3298 (b) the server returned 5xx to all RCPT commands in the first message so
3299 that the message was not completed; (c) the server dropped the connection
3300 or gave a negative response to the RSET that Exim sends to abort the
3301 transaction. The observed case was a dropped connection after DATA that had
3302 been sent in pipelining mode. That is, the server had advertised PIPELINING
3303 but was not implementing it correctly. The effect of the bug was incorrect
3304 behaviour, such as trying another host, and this could lead to a crash.
3305
3306
3307Exim version 4.30
3308-----------------
3309
3310 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3311 and daemon.c were passed as pointers to ints; they should have been
3312 pointers to socklen_t variables (which are typically unsigned ints).
3313
3314 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3315 fixed.
3316
3317 3. Fixed a really odd bug that affected only the testing scheme; patching a
3318 certain fixed string in the binary changed the value of another string that
3319 happened to be identical to the end of the original first string.
3320
3321 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3322 name", it returns that address as the IP address. On some operating
3323 systems (e.g. Solaris), it also passes back the IP address string as the
3324 "host name". However, on others (e.g. Linux), it passes back an empty
3325 string. Exim wasn't checking for this, and was changing the host name to an
3326 empty string, assuming it had been canonicized.
3327
3328 5. Although rare, it is permitted to have more than one PTR record for a given
3329 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3330 all the names associated with an address, because they do in Solaris.
3331 However, it seems that they do not in Linux for data that comes from the
3332 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3333 I found this out when I moved to a new Linux workstation and tried to run
3334 the Exim test suite.
3335
3336 To get round this problem I have changed the code so that it now does its
3337 own call to the DNS to look up PTR records when searching for a host name.
3338 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3339 addresses that are only in /etc/hosts are still found.
3340
3341 This behaviour is, however, controlled by an option called host_lookup_
3342 order, which defaults to "bydns:byaddr". If people want to use the other
3343 order, or indeed, just use one or the other means of lookup, they can
3344 specify it in this variable.
3345
3346 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3347 some operating systems, this comes back from gethostbyaddr() as an empty
3348 string, and this is what Exim used to test for. However, it seems that in
3349 other systems, "." is yielded. Exim now tests for this case too.
3350
3351 7. The values of check_spool_space and check_log_space are now held internally
3352 as a number of kilobytes instead of an absolute number of bytes. If a
3353 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3354 kilobyte. This means that much larger values can be stored.
3355
3356 8. Exim monitor: an attempt to get the action menu when not actually pointing
3357 at a message produces an empty menu entitled "No message selected". This
3358 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3359 no entries in it ("Shell widget menu has zero width and/or height"). So I
3360 have added a single, blank menu entry in this case.
3361
3362 9. Added ${quote_local_part.
3363
336410. MIME decoding is now applied to the contents of Subject: header lines when
3365 they are logged.
3366
336711. Now that a reference to $sender_host_address automatically causes a reverse
3368 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3369 host lookup before query-style lookups in lists that might use this
3370 variable. This has therefore been abolished, and the "net-" prefix is no
3371 longer necessary for query-style lookups.
3372
337312. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3374 have been a typo for LFLAGS, so it has been changed.
3375
337613. The install script calls Exim with "-C /dev/null" in order to find the
3377 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3378 to be output. Howeve, since Exim outputs its version number before the
3379 error, it didn't break the script. It just looked ugly. I fixed this by
3380 always allowing "-C /dev/null" if the caller is root.
3381
338214. Ignore overlarge ACL variable number when reading spool file - insurance
3383 against a later release with more variables having written the file.
3384
338515. The standard form for an IPv6 address literal was being rejected by EHLO.
3386 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3387 this, as well as the form without the "IPv6" on the front.
3388
338916. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3390 OS/Makefile-Darwin file.
3391
339217. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3393 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3394
339518. After change 4.21/52, "%ld" was used to format the contents of the $inode
3396 variable. However, some OS use ints for inodes. I've added cast to long int
3397 to get rid of the compiler warning.
3398
339919. I had forgotten to lock out "/../" in configuration file names when
3400 ALT_CONFIG_PREFIX was set.
3401
340220. Routers used for verification do not need to specify transports. However,
3403 if such a router generated a host list, and callout was configured, Exim
3404 crashed, because it could not find a port number from the (non-existent)
3405 transport. It now assumes port 25 in this circumstance.
3406
340721. Added the -t option to exigrep.
3408
340922. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3410 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3411 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3412 them is set, LOOKUP_LSEARCH is forced.
3413
341423. "exim -bV" now outputs a list of lookups that are included in the binary.
3415
341624. Added sender and host information to the "rejected by local_scan()" log
3417 line; previously there was no indication of these.
3418
341925. Added .include_if_exists.
3420
342126. Change 3.952/11 added an explicit directory sync on top of a file sync for
3422 Linux. It turns out that not all file systems support this. Apparently some
3423 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3424 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3425 not supported on the file descriptor, is now ignored when Exim is trying to
3426 sync a directory. This applies only to Linux.
3427
342827. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3429
343028. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3431 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3432 this.
3433
343429. Added support for maildirsize files from supplied patch (modified a bit).
3435
343630. The use of :fail: followed by an empty string could lead Exim to respond to
3437 sender verification failures with (e.g.):
3438
3439 550 Verification failed for <xxx>
3440 550 Sender verify failed
3441
3442 where the first response line was missing the '-' that indicates it is not
3443 the final line of the response.
3444
344531. The loop for finding the name of the user that called Exim had a hardwired
3446 limit of 10; it now uses the value of finduser_retries, which is used for
3447 all other user lookups.
3448
344932. Added $received_count variable, available in data and not_smtp ACLs, and at
3450 delivery time.
3451
345233. Exim was neglecting to zero errno before one call of strtol() when
3453 expanding a string and expecting an integer value. On some systems this
3454 resulted in spurious "integer overflow" errors. Also, it was casting the
3455 result into an int without checking.
3456
345734. Testing for a connection timeout using "timeout_connect" in the retry rules
3458 did not work. The code looks as if it has *never* worked, though it appears
3459 to have been documented since at least releast 1.62. I have made it work.
3460
346135. The "timeout_DNS" error in retry rules, also documented since at least
3462 1.62, also never worked. As it isn't clear exactly what this means, and
3463 clearly it isn't a major issue, I have abolished the feature by treating it
3464 as "timeout", and writing a warning to the main and panic logs.
3465
346636. The display of retry rules for -brt wasn't always showing the error code
3467 correctly.
3468
346937. Added new error conditions to retry rules: timeout_A, timeout_MX,
3470 timeout_connect_A, timeout_connect_MX.
3471
347238. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3473 to the empty sender.
3474
347539. The daemon was not analysing the content of -oX till after it had closed
3476 stderr and disconnected from the controlling terminal. This meant that any
3477 syntax errors were only noted on the panic log, and the return code from
3478 the command was 0. By re-arranging the code a little, I've made the
3479 decoding happen first, so such errors now appear on stderr, and the return
3480 code is 1. However, the actual setting up of the sockets still happens in
3481 the disconnected process, so errors there are still only recorded on the
3482 panic log.
3483
348440. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3485 connections (as happens on some IP stacks) was logged at start up time as
3486 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3487 it from "IPv6 and IPv4", which means that two separate sockets are being
3488 used.
3489
349041. The debug output for gethostbyname2() or getipnodebyname() failures now
3491 says whether AF_INET or AF_INET6 was passed as an argument.
3492
349342. Exiwhat output was messed up when time zones were included in log
3494 timestamps.
3495
349643. Exiwhat now gives more information about the daemon's listening ports,
3497 and whether -tls-on-connect was used.
3498
349944. The "port" option of the smtp transport is now expanded.
3500
350145. A "message" modifier in a "warn" statement in a non-message ACL was being
3502 silently ignored. Now an error message is written to the main and panic
3503 logs.
3504
350546. There's a new ACL modifier called "logwrite" which writes to a log file
3506 as soon as it is encountered.
3507
350847. Added $local_user_uid and $local_user_gid at routing time.
3509
351048. Exim crashed when trying to verify a sender address that was being
3511 rewritten to "<>".
3512
351349. Exim was recognizing only a space character after ".include". It now also
3514 recognizes a tab character.
3515
351650. Fixed several bugs in the Perl script that creates the exim.8 man page by
3517 extracting the relevant information from the specification. The man page no
3518 longer contains scrambled data for the -d option, and I've added a section
3519 at the front about calling Exim under different names.
3520
352151. Added "extra_headers" argument to the "mail" command in filter files.
3522
352352. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3524 crash.
3525
352653. Installed eximstats 1.29.
3527
352854. Added transport_filter_timeout as a generic transport option.
3529
353055. Exim no longer adds an empty Bcc: header to messages that have no To: or
3531 Cc: header lines. This was required by RFC 822, but it not required by RFC
3532 2822.
3533
353456. Exim used to add From:, Date:, and Message-Id: header lines to any
3535 incoming messages that did not have them. Now it does so only if the
3536 message originates locally, that is, if there is no associated remote host
3537 address. When Resent- header lines are present, this applies to the Resent-
3538 lines rather than the non-Resent- lines.
3539
354057. Drop incoming SMTP connection after too many syntax or protocol errors. The
3541 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3542
354358. Messages for configuration errors now include the name of the main
3544 configuration file - useful now that there may be more than one file in a
3545 list (.included file names were always shown).
3546
354759. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3548 for those rare installations that do not start the daemon as root or run it
3549 setuid root. I've cut out the call to initgroups() if the daemon is not
3550 root at that time.
3551
355260. The Exim user and group can now be bound into the binary as text strings
3553 that are looked up at the start of Exim's processing.
3554
355561. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3556
355762. Added $mailstore_basename variable.
3558
355963. Installed patch to sieve.c from Michael Haardt.
3560
356164. When Exim failed to open the panic log after failing to open the main log,
3562 the original message it was trying to log was written to stderr and debug
3563 output, but if they were not available (the usual case in production), it
3564 was lost. Now it is written to syslog before the two lines that record the
3565 failures to open the logs.
3566
356765. Users' Exim filters run in subprocesses under the user's uid. It is
3568 possible for a "deliver" command or an alias in a "personal" command to
3569 provoke an address rewrite. If logging of address rewriting is configured,
3570 this fails because the process is not running as root or exim. There may be
3571 a better way of dealing with this, but for the moment (because 4.30 needs
3572 to be released), I have disabled address rewrite logging when running a
3573 filter in a non-root, non-exim process.
3574
3575
3576Exim version 4.24
3577-----------------
3578
3579 1. The buildconfig auxiliary program wasn't quoting the value set for
3580 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3581 not defined. This bug was masked in 4.22 by the effect that was fixed in
3582 change 4.23/1.
3583
3584 2. Some messages that were rejected after a message id was allocated were
3585 shown as "incomplete" by exigrep. It no longer does this for messages that
3586 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3587
3588 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3589 have allow_domain_literals set, the ID did not get logged in the <= line.
3590 Domain literals are now always recognized in Message-ID: header lines.
3591
3592 4. The first argument for a ${extract expansion item is the key name or field
3593 number. Leading and trailing spaces in this item were not being ignored,
3594 causing some misleading effects.
3595
3596 5. When deliver_drop_privilege was set, single queue runner processes started
3597 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3598 same command in the process it spins off) were not dropping privilege.
3599
3600 6. When the daemon running as "exim" started a queue runner, it always
3601 re-executed Exim in the spun-off process. This is a waste of effort when
3602 deliver_drop_privilege is set. The new process now just calls the
3603 queue-runner function directly.
3604
3605
3606Exim version 4.23
3607-----------------
3608
3609 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3610 HEADERS_CHARSET.
3611
3612 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3613 ignored. Though the use of -oP was forcing the writing of a pid file, it
3614 was always written to the default place.
3615
3616 3. If the message "no IP address found for host xxxx" is generated during
3617 incoming verification, it is now followed by identification of the incoming
3618 connection (so you can more easily find what provoked it).
3619
3620 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3621
3622 5. Added some features to "harden" Exim a bit more against certain attacks:
3623
3624 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3625