Remove trailing whitespace from each header before concatenation in
[exim.git] / doc / doc-txt / ChangeLog
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fd700877 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.415 2006/10/24 14:32:49 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
944e9e9c
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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
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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
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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
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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 67PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 68 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
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
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82PH/13 Added $message_headers_raw to provide the headers without RFC 2047
83 decoding.
84
e6f6568e
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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
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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
1eccaa59
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120PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
121 flag allowing group syntax was set by the header_syntax check but not
122 turned off, possible causing trouble later; (2) The flag was not being
123 set at all for the header_verify test, causing "group"-style headers to
124 be rejected. I have now set it in this case, and also caused header_
125 verify to ignore an empty address taken from a group. While doing this, I
126 came across some other cases where the code for allowing group syntax
127 while scanning a header line wasn't quite right (mostly, not resetting
128 the flag correctly in the right place). These bugs could have caused
129 trouble for malformed header lines. I hope it is now all correct.
130
602e59e5
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131PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
132 with the "reply" argument non-NULL. The code, however (which originally
133 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
134 but it didn't always do it. This confused somebody who was copying the
135 code for some other use. I have removed all the tests.
136
411ef850
PH
137PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
138 feature that was used to support insecure browsers during the U.S. crypto
139 embargo. It requires special client support, and Exim is probably the
140 only MTA that supported it -- and would never use it because real RSA is
141 always available. This code has been removed, because it had the bad
142 effect of slowing Exim down by computing (never used) parameters for the
143 RSA_EXPORT functionality.
144
7befa435
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145PH/21 On the advice of Timo Sirainen, added a check to the dovecot
146 authenticator to fail if there's a tab character in the incoming data
147 (there should never be unless someone is messing about, as it's supposed
148 to be base64-encoded). Also added, on Timo's advice, the "secured" option
149 if the connection is using TLS or if the remote IP is the same as the
150 local IP, and the "valid-client-cert option" if a client certificate has
151 been verified.
152
48da4259 153PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
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154 authenticators. This can be used for authorization after authentication
155 succeeds. (In the case of plaintext, it servers for both authentication
156 and authorization.)
157
48da4259
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158PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
159 if any retry times were supplied.
160
d1d5595c
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161PH/24 Exim crashed if verify=helo was activated during an incoming -bs
162 connection, where there is no client IP address to check. In this
163 situation, the verify now always succeeds.
164
0ef732d9
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165PH/25 Applied John Jetmore's -Mset patch.
166
328895cc
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167PH/26 Added -bem to be like -Mset, but loading a message from a file.
168
fd700877
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169PH/27 In a string expansion for a processed (not raw) header when multiple
170 headers of the same name were present, leading whitespace was being
171 removed from all of them, but trailing whitespace was being removed only
172 from the last one. Now trailing whitespace is removed from each header
173 before concatenation.
174
944e9e9c 175
478be7b0
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176Exim version 4.63
177-----------------
178
179SC/01 Use a glob alias rather than an array ref in eximstats generated
180 parser. This improves both readability and performance.
181
182SC/02 Collect SpamAssassin and rejection statistics in eximstats.
183 Don't display local sender or destination tables in eximstats unless
184 there is data to show.
185 Added average volumes into the eximstats top table text output.
186
187SC/03 Collect data on the number of addresses (recipients) as well
188 as the number of messages in eximstats.
189
2b965a65
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190TF/01 Correct an error in the documentation for the redirect router. Exim
191 does (usually) call initgroups() when daemonizing.
478be7b0 192
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193TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
194 with consistent privilege compared to when running as a daemon.
478be7b0 195
c59f5781
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196TF/03 Note in the spec that $authenticated_id is not set for local
197 submissions from trusted users.
198
90fc3069
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199TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
200 Thanks to Dean Brooks <dean@iglou.com> for the patch.
201
6083aca0
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202TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
203 by adding some example configuration directives to the default
204 configuration file. A little bit of work is required to uncomment the
205 directives and define how usernames and passwords are checked, but
206 there is now a framework to start from.
207
765b530f
PH
208PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
209 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
210 without this. I don't know how relevant this is to other LDAP libraries.
211
4e167a8c
PH
212PH/02 Add the verb name to the "unknown ACL verb" error.
213
4608d683
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214PH/03 Magnus Holmgren's patch for filter_prepend_home.
215
b8dc3e4a
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216PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
217
5418e93b
PH
218PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
219 directory not expanded when it should be if an expanded home directory
220 was set for the address (which is overridden by the transport).
221
b4a9bda2
PH
222PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
223 libradius.
224
45b91596
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225PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
226 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
227 because it is too late at that time, and has no effect.
228
5547e2c5
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229PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
230 security issue with \' (bugzilla #107). I could not use the
231 PQescapeStringConn() function, because it needs a PGconn value as one of
232 its arguments.
233
dbcef0ea
PH
234PH/08 When testing addresses using -bt, indicate those final addresses that
235 are duplicates that would not cause an additional delivery. At least one
236 person was confused, thinking that -bt output corresponded to deliveries.
237 (Suppressing duplicates isn't a good idea as you lose the information
238 about possibly different redirections that led to the duplicates.)
239
25257489
PH
240PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
241 systems where poll() doesn't work, in particular OS X.
242
c816d124
PH
243PH/10 Added more information to debugging output for retry time not reached.
244
a9ccd69a
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245PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
246 operations in malware.c.
247
75fa1910
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248PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
249 signatures.
250
a7d7aa58
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251PH/13 If write_rejectlog was set false when logging was sent to syslog with
252 syslog_duplication set false, log lines that would normally be written
253 both the the main log and to the reject log were not written to syslog at
254 all.
255
42119b09
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256PH/14 In the default configuration, change the use of "message" in ACL warn
257 statements to "add_header".
258
41609df5
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259PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
260 not followed by a command (e.g. "seen endif").
261
a5bd321b
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262PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
263 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
264 latter.
265
e85a7ad5 266PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
267 so that it is now:
268
e85a7ad5
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269 ${if or { \
270 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
271 { match{$h_precedence:}{(?i)bulk|list|junk} } \
272 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
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273 }{no}{yes}}
274
e85a7ad5
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275 The Auto-Submitted: and various List- headers are standardised, whereas I
276 don't think Precedence: ever was.
5dff5817 277
d8fe1c03
PH
278PH/18 Refactored debugging code in route_finduser() to show more information,
279 in particular, the error code if getpwnam() issues one.
280
16282d2b
PH
281PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
282 This is apparently needed in addition to the PH/07 change above to avoid
283 any possible encoding problems.
284
35d40a98
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285PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
286 but not after initializing Perl.
287
034d99ab
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288PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
289 output them only if debugging. By default they are written stderr,
290 apparently, which is not desirable.
291
6ec97b1b
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292PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
293 queries.
294
e22ca4ac
JJ
295JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
296 --not options
297
298JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
299
33d73e3b
PH
300PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
301 authenticated or an ident call has been made. Suppress the default
302 values for $authenticated_id and $authenticated_sender (but permit -oMai
303 and -oMas) when testing with -bh.
304
9ecb03f3
PH
305PH/24 Re-jigged the order of the tests in the default configuration so that the
306 tests for valid domains and recipients precede the DNS black list and CSA
307 tests, on the grounds that those ones are more expensive.
308
084efe8d
PH
309PH/25 Exim was not testing for a space following SMTP commands such as EHLO
310 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
311 This bug exists in every version of Exim that I still have, right back to
312 0.12.
313
366fc9f0
PH
314PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
315 However, an attempt to turn on case-sensitivity in a regex key by
316 including (?-i) didn't work because the subject string was already
317 lowercased, and the effects were non-intuitive. It turns out that a
318 one-line patch can be used to allow (?-i) to work as expected.
319
c59f5781 320
c887c79e
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321Exim version 4.62
322-----------------
323
324TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
325 other effects) broke the use of negated acl sub-conditions.
326
1cce3af8
PH
327PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
328 patch).
329
afb3eaaf
PH
330PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
331 "Deny" causes Exim to reject the incoming connection with a 554 error.
332 Unfortunately, if there is a major crisis, such as a disk failure,
333 tcp-wrappers gives "deny", whereas what one would like would be some
334 kind of temporary error. A kludge has been added to help with this.
335 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
336 554 error is used if errno is still zero or contains ENOENT (which occurs
337 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
338 451 error is used.
339
e173618b
PH
340PH/03 Add -lutil to the default FreeBSD LIBS setting.
341
dd16e114
PH
342PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
343 errors. Otherwise a message that provokes a temporary error (when other
344 messages do not) can cause a whole host to time out.
345
f7fd3850
PH
346PH/05 Batch deliveries by appendfile and pipe transports did not work when the
347 addresses were routed directly to files or pipes from a redirect router.
348 File deliveries just didn't batch; pipe deliveries might have suffered
349 odd errors.
350
d87df92c
PH
351PH/06 A failure to get a lock for a hints database would erroneously always say
352 "Failed to get write lock", even when it was really a read lock.
353
7e9f683d
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354PH/07 The appendfile transport was creating MBX lock files with a fixed mode
355 of 0600. This has been changed to use the value of the lockfile_mode
356 option (which defaults to 0600).
357
bfad5236
PH
358PH/08 Applied small patch from the Sieve maintainer.
359
01c490df
PH
360PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
361 folder from quota calculations, a direct delivery into this folder messed
362 up the contents of the maildirsize file. This was because the regex was
363 used only to exclude .Trash (or whatever) when the size of the mailbox
364 was calculated. There was no check that a delivery was happening into an
365 excluded directory. This bug has been fixed by ignoring all quota
366 processing for deliveries into excluded directories.
367
d6629cdc
PH
368PH/10 Added the maildirfolder_create_regex option to appendfile.
369
1cce3af8 370
214e2000
PH
371Exim version 4.61
372-----------------
373
374PH/01 The code for finding all the local interface addresses on a FreeBSD
375 system running IPv6 was broken. This may well have applied to all BSD
376 systems, as well as to others that have similar system calls. The broken
377 code found IPv4 interfaces correctly, but gave incorrect values for the
378 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
379 that it would not match correctly against @[] and not recognize the IPv6
380 addresses as local.
381
f9daeae0
PH
382PH/02 The ipliteral router was not recognizing addresses of the form user@
383 [ipv6:....] because it didn't know about the "ipv6:" prefix.
384
7e66e54d
PH
385PH/03 Added disable_ipv6.
386
c8ea1597
PH
387PH/04 Changed $reply_address to use the raw form of the headers instead of the
388 decoded form, because it is most often used to construct To: headers
389 lines in autoreplies, and the decoded form may well be syntactically
390 invalid. However, $reply_address has leading white space removed, and all
391 newlines turned into spaces so that the autoreply transport does not
392 grumble.
393
911f6fde
PH
394PH/05 If group was specified without a user on a router, and no group or user
395 was specified on a transport, the group from the router was ignored.
396
47ca6d6c
PH
397PH/06 Increased the number of ACL variables to 20 of each type, and arranged
398 for visible compile-time settings that can be used to change these
399 numbers, for those that want even more. Backwards compatibility with old
400 spool files has been maintained. However, going back to a previous Exim
401 release will lost any variables that are in spool files.
402
ed0e9820
PH
403PH/07 Two small changes when running in the test harness: increase delay when
404 passing a TCP/IP connection to a new process, in case the original
405 process has to generate a bounce, and remove special handling of
406 127.0.0.2 (sic), which is no longer necessary.
407
eff37e47
PH
408PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
409 be the same on different OS.
410
1921d2ea
PH
411PH/09 Moved a debug statement in filter processing to avoid a race problem when
412 testing.
413
b3f69ca8
JJ
414JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
415 whether --show-vars was specified or not
416
417JJ/02 exipick: Added support for new ACL variable spool format introduced
418 in 4.61-PH/06
419
424a1c63
PH
420PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
421 syntactically invalid From: or Reply-to: line, and a filter used this to
422 generate an autoreply, and therefore failed to obtain an address for the
423 autoreply, Exim could try to deliver to a non-existent relative file
424 name, causing unrelated and misleading errors. What now happens is that
425 it logs this as a hard delivery error, but does not attempt to create a
426 bounce message.
427
7a100415
PH
428PH/11 The exinext utility has a -C option for testing purposes, but although
429 the given file was scanned by exinext itself; it wasn't being passed on
430 when Exim was called.
431
19b9dc85
PH
432PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
433 an end-of-file indication when reading a command response.
434
309bd837
PH
435PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
436 compiled. In many other places in Exim, IPv6 addresses are always
437 recognized, so I have changed this. It also means that IPv4 domain
438 literals of the form [IPV4:n.n.n.n] are now always recognized.
439
59e82a2a
PH
440PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
441 used if the router is not running as root, for example, when verifying at
442 ACL time, or when using -bh. The debugging output from this situation was
443 non-existent - all you got was a failure to exec. I have made two
444 changes:
445
446 (a) Failures to set uid/gid, the current directory, or a process leader
447 in a subprocess such as that created by queryprogram now generate
448 suitable debugging ouput when -d is set.
449
450 (b) The queryprogram router detects when it is not running as root,
451 outputs suitable debugging information if -d is set, and then runs
452 the subprocess without attempting to change uid/gid.
453
9edc04ce
PH
454PH/15 Minor change to Makefile for building test_host (undocumented testing
455 feature).
456
1349e1e5
PH
457PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
458 additional section of a DNS packet that returns MX or SRV records.
459 Instead, it always explicitly searches for A/AAAA records. This avoids
460 major problems that occur when a DNS server includes only records of one
461 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
462 fixed another bug: if SRV records were looked up and the corresponding
463 address records were *not* found in the additional section, the port
464 values from the SRV records were lost.
465
ea49d0e1
PH
466PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
467 using the correct key (the original address) when searching the retry
468 rules in order to find which one to use for generating the retry hint.
469
064a94c9
PH
470PH/18 If quota_warn_message contains a From: header, Exim now refrains from
471 adding the default one. Similarly, if it contains a Reply-To: header, the
472 errors_reply_to option, if set, is not used.
473
727071f8
PH
474PH/19 When calculating a retry time, Exim used to measure the "time since
475 failure" by looking at the "first failed" field in the retry record. Now
476 it does not use this if it is later than than the arrival time of the
477 message. Instead it uses the arrival time. This makes for better
478 behaviour in cases where some deliveries succeed, thus re-setting the
479 "first failed" field. An example is a quota failure for a huge message
480 when small messages continue to be delivered. Without this change, the
481 "time since failure" will always be short, possible causing more frequent
482 delivery attempts for the huge message than are intended.
dd16e114 483 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 484
f78eb7c6
PH
485PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
486 $1, $2, $3) because the numerical variables can be reset during some
487 expansion items (e.g. "match"), thereby losing the authentication data.
488
21c28500
PH
489PH/21 Make -bV show the size of off_t variables so that the test suite can
490 decide whether to run tests for quotas > 2G.
491
492PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
493 mailbox_size, and mailbox_filecount in the appendfile transport. If a
494 filecount value is greater than 2G or if a quota value is greater than 2G
495 on a system where the size of off_t is not greater than 4, a panic error
496 is given.
497
1688f43b
PH
498PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
499 never match. The debug and -bh output now contains an explicit error
500 message indicating a malformed IPv4 address or mask.
501
502PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
503 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
504 PH/23 above applies.
505
9675b384
PH
506PH/25 Do not write to syslog when running in the test harness. The only
507 occasion when this arises is a failure to open the main or panic logs
508 (for which there is an explicit test).
509
6a3f1455
PH
510PH/26 Added the /no_tell option to "control=freeze".
511
dac79d3e
PH
512PH/27 If a host name lookup failed very early in a connection, for example, if
513 the IP address matched host_lookup and the reverse lookup yielded a name
514 that did not have a forward lookup, an error message of the form "no IP
515 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
516 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 517
5977a0b3
PH
518PH/28 An enabling patch from MH: add new function child_open_exim2() which
519 allows the sender and the authenticated sender to be set when
520 submitting a message from within Exim. Since child_open_exim() is
521 documented for local_scan(), the new function should be too.
522
c91535f3
PH
523PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
524 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
525 results in an empty string is now treated as unset.
526
0d46a8c8
PH
527PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
528
278c6e6c
PH
529PH/31 Added sender_verify_fail logging option.
530
2cbb4081
PH
531PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
532 needed by RFC 822 but not by RFC 2822 was commented out. I have now
533 tidied the source and removed it altogether.
534
3eef829e
PH
535PH/33 When a queue run was abandoned because the load average was too high, a
536 log line was always written; now it is written only if the queue_run log
537 selector is set. In addition, the log line for abandonment now contains
538 information about the queue run such as the pid. This is always present
539 in "start" and "stop" lines but was omitted from the "abandon" line.
540
1ab95fa6
PH
541PH/34 Omit spaces between a header name and the colon in the error message that
542 is given when verify = headers_syntax fails (if there are lots of them,
543 the message gets confusing).
544
230205fc
PH
545PH/35 Change the default for dns_check_names_pattern to allow slashes within
546 names, as there are now some PTR records that contain slashes. This check
547 is only to protect against broken name servers that fall over on strange
548 characters, so the fact that it applies to all lookups doesn't matter.
549
75e0e026
PH
550PH/36 Now that the new test suite is complete, we can remove some of the
551 special code in Exim that was needed for the old test suite. For example,
552 sorting DNS records because real resolvers return them in an arbitrary
553 order. The new test suite's fake resolver always returns records in the
554 same order.
555
556PH/37 When running in the test harness, use -odi for submitted messages (e.g.
557 bounces) except when queue_only is set, to avoid logging races between
558 the different processes.
559
145396a6
PH
560PH/38 Panic-die if .include specifies a non-absolute path.
561
3cd34f13
PH
562PH/39 A tweak to the "H" retry rule from its user.
563
11121d3d
JJ
564JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
565 a label. They prevented compilation on older perls.
566
567JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
568 a warning to be raised on newish perls.
569
570JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
571 on queue. Changes to match documented behaviour of showing count of
572 messages matching specified criteria.
573
8def5aaf
PH
574PH/40 Changed the default ident timeout from 30s to 5s.
575
929ba01c
PH
576PH/41 Added support for the use of login_cap features, on those BSD systems
577 that have them, for controlling the resources used by pipe deliveries.
578
2632889e
PH
579PH/42 The content-scanning code uses fopen() to create files in which to put
580 message data. Previously it was not paying any attention to the mode of
581 the files. Exim runs with umask(0) because the rest of the code creates
582 files with open(), and sets the required mode explicitly. Thus, these
583 files were ending up world-writeable. This was not a big issue, because,
584 being within the spool directory, they were not world-accessible. I have
585 created a function called modefopen, which takes an additional mode
586 argument. It sets umask(777), creates the file, chmods it to the required
587 mode, then resets the umask. All the relevant calls to fopen() in the
588 content scanning code have been changed to use this function.
589
944a9c55
PH
590PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
591 to 24 hours. This avoids potential overflow problems when processing G
592 and H retry rules. I suspect nobody ever tinkers with this value.
593
4a23603b
PH
594PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
595
4730f942
PH
596PH/45 When the plaintext authenticator is running as a client, the server's
597 challenges are checked to ensure they are valid base64 strings. By
598 default, the authentication attempt is cancelled if an invalid string is
599 received. Setting client_ignore_invalid_base64 true ignores these errors.
600 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
601 they are received. Thus, the responses can be made to depend on the
602 challenges. If an invalid string is ignored, an empty string is placed in
603 the variable.
604
30dba1e6
PH
605PH/46 Messages that are created by the autoreply transport now contains a
606 References: header, in accordance with RFCs 2822 and 3834.
607
382afc6b
PH
608PH/47 Added authenticated_sender_force to the smtp transport.
609
a86229cf
PH
610PH/48 The ${prvs expansion was broken on systems where time_t was long long.
611
50c99ba6
PH
612PH/49 Installed latest patch from the Sieve maintainer.
613
d35e429d
PH
614PH/50 When an Exim quota was set without a file count quota, and mailbox_size
615 was also set, the appendfile transport was unnecessarily scanning a
616 directory of message files (e.g. for maildir delivery) to find the count
617 of files (along with the size), even though it did not need this
618 information. It now does the scan only if it needs to find either the
619 size of the count of files.
620
f90d018c
PH
621PH/51 Added ${time_eval: to convert Exim time strings into seconds.
622
75def545
PH
623PH/52 Two bugs concerned with error handling when the smtp transport is
624 used in LMTP mode:
625
626 (i) Exim was not creating retry information for temporary errors given
627 for individual recipients after the DATA command when the smtp transport
628 was used in LMTP mode. This meant that they could be retried too
629 frequently, and not timed out correctly.
630
631 (ii) Exim was setting the flag that allows error details to be returned
632 for LMTP errors on RCPT commands, but not for LMTP errors for individual
633 recipients that were returned after the DATA command.
634
635PH/53 This is related to PH/52, but is more general: for any failing address,
636 when detailed error information was permitted to be returned to the
637 sender, but the error was temporary, then after the final timeout, only
638 "retry timeout exceeded" was returned. Now it returns the full error as
639 well as "retry timeout exceeded".
640
c46782ef
PH
641PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
642 do this, and (what is worse) MTAs that accept it.
643
71fafd95
PH
644PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
645 will now be deprecated.
646
2c5db4fd
PH
647PH/56 New os.c-cygwin from the Cygwin maintainer.
648
9cf6b11a
JJ
649JJ/06 exipick: added --unsorted option to allow unsorted output in all output
650 formats (previously only available in exim formats via -bpr, -bpru,
651 and -bpra. Now also available in native and exiqgrep formats)
652
653JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
654 with very large, slow to parse queues
655
656JJ/08 exipick: added ! as generic prefix to negate any criteria format
657
658JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
659
898d150f
PH
660PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
661 responses to authentication challenges, though it was showing the
662 challenges; (ii) I've removed the CR characters from the debug output for
663 SMTP output lines.
664
46218253
PH
665PH/58 Allow for the insertion of a newline as well as a space when a string
666 is turned into more than one encoded-word during RFC 2047 encoding. The
667 Sieve code now uses this.
668
e97957bc
PH
669PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
670 data_4xx, lost_connection, tls_required.
671
81e509d7
PH
672PH/60 When a VRFY deferred or FAILED, the log message rather than the user
673 message was being sent as an SMTP response.
674
3d240ff7
PH
675PH/61 Add -l and -k options to exicyclog.
676
b37c4101
PH
677PH/62 When verifying, if an address was redirected to one new address, so that
678 verification continued, and the new address failed or deferred after
679 having set something in $address_data, the value of $address_data was not
680 passed back to the ACL. This was different to the case when no
681 redirection occurred. The value is now passed back in both cases.
682
79378e0f
PH
683PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
684 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
685 use login_cap.h, so on its own it isn't the distinguishing feature. The
686 new name refers directly to the setclassresources() function.
687
e49c7bb4
PH
688PH/65 Added configuration files for NetBSD3.
689
d114ec46
PH
690PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
691
f3d7df6c
PH
692PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
693 is preferred over IPv4.
694
715ab376
PH
695PH/68 The bounce_return_message and bounce_return_body options were not being
696 honoured for bounces generated during the reception of non-SMTP messages.
697 In particular, this applied to messages rejected by the ACL. This bug has
698 been fixed. However, if bounce_return_message is true and bounce_return_
699 body is false, the headers that are returned for a non-SMTP message
700 include only those that have been read before the error was detected.
701 (In the case of an ACL rejection, they have all been read.)
702
6b31b150
PH
703PH/69 The HTML version of the specification is now built in a directory called
704 spec_html instead of spec.html, because the latter looks like a path with
705 a MIME-type, and this confuses some software.
706
707PH/70 Catch two compiler warnings in sieve.c.
708
d515a917
PH
709PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
710 function verify_get_ident() calls ip_connect() to connect a socket, but
711 if the "connect()" function timed out, ip_connect() used to close the
712 socket. However, verify_get_ident() also closes the socket later, and in
713 between Exim writes to the log, which may get opened at this point. When
714 the socket was closed in ip_connect(), the log could get the same file
715 descriptor number as the socket. This naturally causes chaos. The fix is
716 not to close the socket in ip_connect(); the socket should be closed by
717 the function that creates it. There was only one place in the code where
718 this was missing, in the iplookup router, which I don't think anybody now
719 uses, but I've fixed it anyway.
720
9b8fadde
PH
721PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
722 well as to direct DNS lookups. Otherwise the handling of names in host
723 lists is inconsistent and therefore confusing.
724
214e2000 725
5de37277
PH
726Exim version 4.60
727-----------------
728
cc38ddbf
PH
729PH/01 Two changes to the default runtime configuration:
730
731 (1) Move the checks for relay_from_hosts and authenticated clients from
732 after to before the (commented out) DNS black list checks.
733
734 (2) Add control=submission to the relay_from_hosts and authenticated
735 clients checks, on the grounds that messages accepted by these
736 statements are most likely to be submissions.
5de37277 737
72fdd6ae
PH
738PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
739
740 (1) Generate an error if the third argument for the ${prvs expansion is
741 not a single digit.
742
743 (2) Treat a missing third argument of ${prvscheck as if it were an empty
744 string.
745
746 (3) Reset the variables that are obtained from the first argument of
747 ${prvscheck and used in the second argument before leaving the code,
748 because their memory is reclaimed, so using them afterwards may do
749 silly things.
750
751 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
752 one (it's much easier than Tom thought :-).
753
754 (5) Because of (4), we can now allow for the use of $prvscheck_result
755 inside the third argument.
cb9328de 756
cb741023
PH
757PH/03 For some reason, the default setting of PATH when running a command from
758 a pipe transport was just "/usr/bin". I have changed it to
759 "/bin:/usr/bin".
760
f174f16e
PH
761PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
762 anything to be listed in the output from -bV.
b2f5a032 763
c25242d7
PH
764PH/05 When a filter generated an autoreply, the entire To: header line was
765 quoted in the delivery log line, like this:
766
767 => >A.N.Other <ano@some.domain> <original@ddress> ...
768
769 This has been changed so that it extracts the operative address. There
770 may be more than one such address. If so, they are comma-separated, like
771 this:
772
773 => >ano@some.domain,ona@other.domain <original@ddress> ...
774
82c19f95
PH
775PH/06 When a client host used a correct literal IP address in a HELO or EHLO
776 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
777 not being looked up in the rDNS to get a host name, Exim was showing the
778 IP address twice in Received: lines, even though the IP addresses were
779 identical. For example:
780
781 Received: from [1.2.3.4] (helo=[1.2.3.4])
782
783 However, if the real host name was known, it was omitting the HELO data
784 if it matched the actual IP address. This has been tidied up so that it
785 doesn't show the same IP address twice.
786
d7ffbc12
PH
787PH/07 When both +timestamp and +memory debugging was on, the value given by
788 $tod_xxx expansions could be wrong, because the tod_stamp() function was
789 called by the debug printing, thereby overwriting the timestamp buffer.
790 Debugging no longer uses the tod_stamp() function when +timestamp is set.
791
9f526266
PH
792PH/08 When the original message was included in an autoreply transport, it
793 always said "this is a copy of the message, including all the headers",
794 even if body_only or headers_only was set. It now gives an appropriate
795 message.
796
87fcc8b9
PH
797PH/09 Applied a patch from the Sieve maintainer which:
798
799 o fixes some comments
800 o adds the (disabled) notify extension core
801 o adds some debug output for the result of if/elsif tests
802 o points to the current vacation draft in the documentation
803 and documents the missing references header update
804
805 and most important:
806
807 o fixes a bug in processing the envelope test (when testing
808 multiple envelope elements, the last element determinted the
809 result)
810
456682f5
PH
811PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
812 Electronic Mail") by including:
813
814 Auto-submitted: auto-generated
815
816 in the messages that it generates (bounce messages and others, such as
817 warnings). In the case of bounce messages for non-SMTP mesages, there was
818 also a typo: it was using "Auto_submitted" (underscore instead of
819 hyphen). Since every message generated by Exim is necessarily in response
820 to another message, thes have all been changed to:
821
822 Auto-Submitted: auto-replied
823
824 in accordance with these statements in the RFC:
825
826 The auto-replied keyword:
827
828 - SHOULD be used on messages sent in direct response to another
829 message by an automatic process,
830
831 - MUST NOT be used on manually-generated messages,
832
833 - MAY be used on Delivery Status Notifications (DSNs) and Message
834 Disposition Notifications (MDNs),
835
836 - MUST NOT be used on messages generated by automatic or periodic
837 processes, except for messages which are automatic responses to
838 other messages.
839
3e46c1aa
PH
840PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
841 to the default Received: header definition.
456682f5 842
49826d12
PH
843PH/12 Added log selector acl_warn_skipped (default on).
844
eba0c039
PH
845PH/13 After a successful wildlsearch lookup, discard the values of numeric
846 variables because (a) they are in the wrong storage pool and (b) even if
847 they were copied, it wouldn't work properly because of the caching.
848
a0d6ba8a
PH
849PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
850 checking when decoding. Apparently there are clients that generate
851 overlong encoded strings. Why am I not surprised?
852
f0917727
PH
853PH/15 If the first argument of "${if match_address" was not empty, but did not
854 contain an "@" character, Exim crashed. Now it writes a panic log message
855 and treats the condition as false.
856
096fee00
PH
857PH/16 In autoreply, treat an empty string for "once" the same as unset.
858
024bd3c2
PH
859PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
860 extension "envelope-auth". The code is finished and in agreement with
861 other implementations, but there is no documentation so far and in fact,
862 nobody wrote the draft yet. This extension is currently #undef'ed, thus
863 not changing the active code.
864
865 Print executed "if" and "elsif" statements when debugging is used. This
866 helps a great deal to understand what a filter does.
867
868 Document more things not specified clearly in RFC3028. I had all this
869 sorted out, when out of a sudden new issues came to my mind. Oops."
870
df199fec
PH
871PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
872 (Bugzilla #53).
873
d27f1df3
PH
874PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
875 canonical form (as documented). However, after a host name lookup from
876 the IP address, check_host() was doing a simple string comparison with
877 addresses acquired from the DNS when checking that the found name did
878 have the original IP as one of its addresses. Since any found IPv6
879 addresses are likely to be in abbreviated form, the comparison could
880 fail. Luckily, there already exists a function for doing the comparison
881 by converting both addresses to binary, so now that is used instead of
882 the text comparison.
883
96776534
PH
884PH/20 There was another similar case to PH/19, when a complete host name was
885 given in a host list; looking up its IP address could give an abbreviated
886 form, whereas the current host's name might or might not be abbreviated.
887 The same fix has been applied.
888
5de37277 889
9a799bc0
PH
890Exim version 4.54
891-----------------
892
893PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
894 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
895 It now does.
896
99a4b039
PH
897PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
898 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
899
900PH/03 Typo: missing ".o" in src/pcre/Makefile.
901
4b233853
PH
902PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
903 header line, restrict the check to what is listed in RFCs 2369 and 2929.
904 Also, for "Auto-Submitted", treat anything other than "no" as
905 non-personal, in accordance with RFC 3834. (Previously it treated
906 anything starting "auto-" as non-personal.)
907
8857ccfd
PH
908TF/01 The control=submission/name=... option had a problem with syntax
909 errors if the name included a slash character. The /name= option
910 now slurps the rest of the string, so it can include any characters
911 but it must come last in the list of options (after /sender_retain
912 or /domain=).
913
433a2980
PH
914PH/05 Some modifications to the interface to the fake nameserver for the new
915 testing suite.
916
3e46c1aa 917
9a799bc0 918
e3a311ba
TK
919Exim version 4.53
920-----------------
921
922TK/01 Added the "success_on_redirect" address verification option. See
923 NewStuff for rationale and an example.
924
13b685f9
PH
925PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
926
395ff96d
PH
927PH/02 Patch to exigrep to allow it to work on syslog lines.
928
5b68f6e4
PH
929PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
930 fread() to skip over the body file's header line, because in Cygwin the
931 header line is locked and is inaccessible.
932
1ab52c69
PH
933PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
934 co-exist for some time) to make it clear that it is the Exim ID that is
935 referenced, not the Message-ID: header line.
936
b07e6aa3
PH
937PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
938 string_format() function, because snprintf() does not exist on all
939 operating systems.
940
254e032f
PH
941PH/06 The use of forbid_filter_existstest now also locks out the use of the
942 ${stat: expansion item.
943
3af76a81
PH
944PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
945 protocol synchronization error", to keep the pedants happy.
946
2548ba04
PH
947PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
948 well as for IRIX systems, when gcc is being used. See the host.c source
949 file for comments.
950
b6c6011d
PH
951PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
952
cf39cf57
PH
953PH/10 Named domain lists were not working if used in a queue_smtp_domains
954 setting.
955
f1513293
PH
956PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
957 transport and to the smtp transport in LMTP mode.
958
727549a4
PH
959TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
960
af46795e
PH
961PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
962 run a filter in a subprocess. This could lead to confusion in subsequent
963 lookups in the parent process. There should also be a search_tidyup() at
964 the end of the subprocess.
965
d7b47fd0
PH
966PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
967 only if the host matched helo_try_verify_hosts, which caused the
968 verification to occur when the EHLO/HELO command was issued. The ACL just
969 tested the remembered result. Now, if a previous verification attempt has
970 not happened, "verify = helo" does it there and then.
971
ee744174
JJ
972JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
973
b582ab87
PH
974TK/03 Fix log output including CR from clamd.
975
41a13e0a
PH
976PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
977 exist provoked a memory error which could cause a segfault.
978
f625cc5a
PH
979PH/15 Installed PCRE 6.2
980
981PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
982
21f7af35
PH
983PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
984 of the problem. Specifically, suggested +O2 rather than +O1 for the
985 HP-UX compiler.
986
31480e42
PH
987PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
988
2d280592
PH
989PH/20 If a delivery was routed to a non-standard port by means of an SRV
990 record, the port was not correctly logged when the outgoing_port log
991 selector was set (it logged the transort's default port).
992
7cd1141b
PH
993PH/21 Added support for host-specific ports to manualroute, queryprogram,
994 fallback_hosts, and "hosts" in the smtp transport.
995
996PH/22 If the log selector "outgoing_port" is set, the port is now also given on
997 host errors such as "Connection refused".
998
750af86e
PH
999PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1000 authentication with radiusclient 0.4.9:
1001
1002 - Error returned from rc_read_config was caught wrongly
1003 - Username/password not passed on to radius server due to wrong length.
1004
1005 The presumption is that some radiusclient API changes for 4.51/PH/17
1006 were not taken care of correctly. The code is still untested by me (my
1007 Linux distribution still has 0.3.2 of radiusclient), but it was
1008 contributed by a Radius user.
1009
1010PH/24 When doing a callout, the value of $domain wasn't set correctly when
1011 expanding the "port" option of the smtp transport.
1012
4304270b
TK
1013TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1014 while reading a MIME header. Thanks to Tom Hughes for a patch.
1015
750af86e
PH
1016PH/24 Include config.h inside local_scan.h so that configuration settings are
1017 available.
1018
64ffc24f
PH
1019PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1020 that in an ACL for RCPT (for example), you can examine exactly what was
1021 received.
1022
5dd9625b
PH
1023PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1024 commands, but it was not correctly comparing the address with the actual
1025 client host address. Thus, it would show the EHLO address in Received:
1026 header lines when this was not necessary.
1027
5591031b
PH
1028PH/27 Added the % operator to ${eval:}.
1029
ba18e66a
PH
1030PH/28 Exim tries to create and chdir to its spool directory when it starts;
1031 it should be ignoring failures (because with -C, for example, it has lost
1032 privilege). It wasn't ignoring creation failures other than "already
1033 exists".
1034
9cec981f
PH
1035PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1036 -bV or -d is used.
1037
aa2b5c79
PH
1038PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1039 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1040 too many continuations, the temporary file was not being removed, and the
1041 return code was incorrect.
aa2b5c79 1042
48a53b7f
PH
1043PH/31 Missing "BOOL" in function definition in filtertest.c.
1044
1c59d63b
PH
1045PH/32 Applied Sieve patches from the maintainer.
1046
671012da
TK
1047TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1048
1509d3a8
PH
1049PH/33 Added "verify = not_blind".
1050
1051PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1052 Local/Makefile (with some defaults set). These are used in built scripts
1053 such as exicyclog, but they have never been used in the exim_install
1054 script (though there are many overriding facilities there). I have
1055 arranged that the exim_install script now takes note of these two
1056 settings.
1057
1058PH/35 Installed configuration files for Dragonfly.
1059
2fe1a124
PH
1060PH/36 When a locally submitted message by a trusted user did not contain a
1061 From: header, and the sender address was obtained from -f or from an SMTP
1062 MAIL command, and the trusted user did not use -F to supply a sender
1063 name, $originator_name was incorrectly used when constructing a From:
1064 header. Furthermore, $originator_name was used for submission mode
1065 messages from external hosts without From: headers in a similar way,
1066 which is clearly wrong.
1067
8800895a
PH
1068PH/37 Added control=suppress_local_fixups.
1069
ccfdb010
PH
1070PH/38 When log_selector = +received_sender was set, and the addition of the
1071 sender made the log line's construction buffer exactly full, or one byte
1072 less than full, an overflow happened when the terminating "\n" was
1073 subsequently added.
1074
1130bfb0
PH
1075PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1076 when the result of a list match is failure because a DNS lookup failed.
1077
ebcb507f
PH
1078PH/40 RM_COMMAND is now used in the building process.
1079
c35e155c
PH
1080PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1081 the "build-* directories that it finds.
1082
95d1f782
PH
1083PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1084 address in a domain literal was a prefix of an interface address.
1085
fd6de02e
PH
1086PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1087 when verifying a sender address, unless rewrite_headers is false.
1088
58de37c5
PH
1089PH/44 Wrote a long comment about why errors_to addresses are verified as
1090 recipients, not senders.
1091
261cf466
TF
1092TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1093 the ratelimit ACL was added.
1094
3ee512ff
PH
1095PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1096
e08c430f
PH
1097PH/46 Added extra information about PostgreSQL errors to the error string.
1098
bef5a11f
PH
1099PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1100 avoiding the need to install special zones in a real server. This is
1101 backwards compatible; if it can't find the fake resolver, it drops back.
1102 Thus, both old and new test suites can be run.
1103
7546de58
TF
1104TF/02 Added util/ratelimit.pl
1105
e5d5a95f
TF
1106TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1107 clock is set back in time.
1108
2e88a017
TF
1109TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1110 Candler <B.Candler@pobox.com>.
1111
a5f65aa4
TF
1112TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1113 OK for addresses that are the result of redirections.
1114
e7726cbf
PH
1115PH/48 A number of further additions for the benefit of the new test suite,
1116 including a fake gethostbyname() that interfaces to the fake DNS resolver
1117 (see PH/47 above).
1118
a7fdad5b
TF
1119TF/06 The fix for widen_domains has also been applied to qualify_single and
1120 search_parents which are the other dnslookup options that can cause
1121 header rewrites.
1122
6af56900
PH
1123PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1124 type ("H").
1125
0925ede6
PH
1126PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1127
66afa403
TF
1128TF/07 Exim produced the error message "an SRV record indicated no SMTP
1129 service" if it encountered an MX record with an empty target hostname.
1130 The message is now "an MX or SRV record indicated no SMTP service".
1131
0154e85a
TF
1132TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1133 if the DNS of the sending site is misconfigured. This is quite a
1134 common situation. This change restores the behaviour of treating a
1135 helo verification defer as a failure.
1136
16f12c76
PH
1137PH/51 If self=fail was set on a router, the bounce message did not include the
1138 actual error message.
1139
bbe902f0 1140
e5a9dba6
PH
1141Exim version 4.52
1142-----------------
1143
1144TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1145
22c3b60b
PH
1146PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1147 command itself ended in error, the underlying message about the transport
1148 filter timeout was being overwritten with the pipe command error. Now the
1149 underlying error message should be appended to the second error message.
1150
06a9b4b5
PH
1151TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1152
c1ac6996
PH
1153PH/02 Reduce the amount of output that "make" produces by default. Full output
1154 can still be requested.
1155
9c7a242c
PH
1156PH/03 The warning log line about a condition test deferring for a "warn" verb
1157 was being output only once per connection, rather than after each
1158 occurrence (because it was using the same function as for successful
1159 "warn" verbs). This seems wrong, so I have changed it.
1160
87ba3f5f
PH
1161TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1162 it should not have, which might have caused a crash in the right
1163 circumstances, but probably never did.
1164
1165PH/04 Installed a modified version of Tony Finch's patch to make submission
1166 mode fix the return path as well as the Sender: header line, and to
1167 add a /name= option so that you can make the user's friendly name appear
1168 in the header line.
1169
29aba418
TF
1170TF/03 Added the control = fakedefer ACL modifier.
1171
fe0dab11
TF
1172TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1173 Mark Lowes for thorough testing.
870f6ba8 1174
11d337a4
TK
1175TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1176
1177TK/03 Merged latest SRS patch from Miles Wilton.
1178
415c8f3b
PH
1179PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1180 with the definition in sysexits.h (which is #included earlier).
1181 Fortunately, Exim does not actually use EX_OK. The code used to try to
1182 preserve the sysexits.h value, by assumimg that macro definitions were
1183 scanned for macro replacements. I have been disabused of this notion,
1184 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1185
958541e9
PH
1186PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1187 in the smtp transport. When a block could not be written in a single
1188 write() function, the timeout was being re-applied to each part-write.
1189 This seems wrong - if the receiver was accepting one byte at a time it
1190 would take for ever. The timeout is now adjusted when this happens. It
1191 doesn't have to be particularly precise.
1192
c206415f
TK
1193TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1194 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1195
2a4be8f9
PH
1196PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1197 without a domain if the check to <postmaster@domain> fails.
1198
1cba11c5
SC
1199SC/01 Eximstats: added -xls and the ability to specify output files
1200 (patch written by Frank Heydlauf).
1201
1202SC/02 Eximstats: use FileHandles for outputing results.
1203
1204SC/03 Eximstats: allow any combination of xls, txt, and html output.
1205
1206SC/04 Eximstats: fixed display of large numbers with -nvr option
1207
1208SC/05 Eximstats: fixed merging of reports with empty tables.
1209
1210SC/06 Eximstats: added the -include_original_destination flag
1211
1212SC/07 Eximstats: removed tabs and trailing whitespace.
1213
1005d00e
TK
1214TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1215
1216TK/06 MBOX spool code: Add real "From " MBOX separator line
1217 so the .eml file is really in mbox format (even though
1218 most programs do not really care). Patch from Alex Miller.
1219
1220TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1221 The latter is generated from $received_to and is only set if the
1222 message has one envelope recipient. SA can use these headers,
1223 obviously out-of-the-box. Patch from Alex Miller.
1224
9b4768fa
PH
1225PH/08 The ${def test on a variable was returning false if the variable's
1226 value was "0", contrary to what the specification has always said!
1227 The result should be true unless the variable is empty.
1228
1229PH/09 The syntax error of a character other than { following "${if
1230 def:variable_name" (after optional whitespace) was not being diagnosed.
1231 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1232 accidental colon was present, for example, could give incorrect results.
1233
0d7eb84a
PH
1234PH/10 Tidied the code in a number of places where the st_size field of a stat()
1235 result is used (not including appendfile, where other changes are about
1236 to be made).
1237
1238PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1239 This involved changing a lot of size variables from int to off_t. It
1240 should work with maildirs and everything.
1241
40727bee
TK
1242TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1243 spamd dying while we are connected to it.
1244
554d2369
TF
1245TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1246 <jgh@wizmail.org>
1247
1f922db1
PH
1248PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1249 function for BDB 4.3.
1250
ef213c3b
PH
1251PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1252
8ac170f3
PH
1253PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1254 the sources for PCRE have been re-arranged and more files are now
1255 involved.
1256
b1c749bb
PH
1257PH/15 The code I had for printing potentially long long variables in PH/11
1258 above was not the best (it lost precision). The length of off_t variables
1259 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1260 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1261 to be "long long int" or "long int". This is needed for the internal
1262 formatting function string_vformat().
b1c749bb 1263
4aac9b49
PH
1264PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1265 the configuration file to be ":syslog", then the script "guesses" where
1266 the logs files are, rather than using the compiled in default. In our
1267 case the guess is not the same as the compiled default, so the script
1268 suddenly stopped working when I started to use syslog. The patch checks
1269 to see if log_file_path is "". If so, it attempts to read it from exim
1270 with no configuration file to get the compiled in version, before it
1271 falls back to the previous guessing code."
1272
294520c8
TK
1273TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1274 implementing BATV in an Exim configuration. See NewStuff for the gory
1275 details.
1276
5bd022fe
PH
1277PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1278 Makefile that are specific to HP-UX.
1279
90e9ce59
PH
1280PH/18 If the "use_postmaster" option was set for a recipient callout together
1281 with the "random" option, the postmaster address was used as the MAIL
1282 FROM address for the random test, but not for the subsequent recipient
1283 test. It is now used for both.
1284
5ea81592
PH
1285PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1286 patch removes a few documentation additions to RFC 3028, because the
1287 latest draft now contains them. It adds the new en;ascii-case comparator
1288 and a new error check for 8bit text in MIME parts. Comparator and
1289 require names are now matched exactly. I enabled the subaddress
1290 extension, but it is not well tested yet (read: it works for me)."
1291
c6c2dc1d
PH
1292PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1293 rework some of the code of TK/09 above to avoid the hardwired use of
1294 "%lld" and "long long". Replaced the call to snprintf() with a call to
1295 string_vformat().
1296
fffffe4c
PH
1297PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1298 records point to non-existent hosts", "retry timeout exceeded", and
1299 "retry time not reached for any host after a long failure period".
ca02eafb 1300
9a26b6b2
PH
1301PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1302 experimental DomainKeys support:
1303
1304 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1305 (2) On an error such as an illegally used "control", the wrong name for
1306 the control was given.
1307
1308 These problems did NOT occur unless DomainKeys support was compiled.
1309
4aee0225
PH
1310PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1311
32d668a5
PH
1312PH/24 Added ${if match_ip condition.
1313
8187c3f3
PH
1314PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1315 databases so that it will be absolutely obvious if a crash occurs in the
1316 DB library. This is a regular occurrence (often caused by mis-matched
1317 db.h files).
1318
ff790e47 1319PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1320 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1321 picked up on a user's system that detects such things. There doesn't seem
1322 to be a gcc warning option for this - only an attribute that has to be
1323 put on the function's prototype. It seems that in Fedora Core 4 they have
1324 set this on a number of new functions. No doubt there will be more in due
1325 course.
ff790e47 1326
5417f6d1
PH
1327PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1328 specify a transport. However, if an address that was verified by such a
1329 router was the subject of a callout, Exim crashed because it tried to
1330 read the rcpt_include_affixes from the non-existent transport. Now it
1331 just assumes that the setting of that option is false. This bug was
1332 introduced by 4.51/PH/31.
1333
59cf8544
PH
1334PH/28 Changed -d+all to exclude +memory, because that information is very
1335 rarely of interest, but it makes the output a lot bigger. People tend to
1336 do -d+all out of habit.
1337
e7ad8a65
PH
1338PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1339 code in os-type was giving problems when libc.so lives in lib64, like on
1340 x86_64 Fedora Core.
1341
ade42478
PH
1342PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1343 aren't the modern standard, and it seems that some systems' include files
1344 don't always have them. Exim was already checking for some of the newer
1345 ones like T_AAAA, and defining it itself. I've added checks for all the
1346 record types that Exim uses.
1347
182ad5cf
PH
1348PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1349 not automatically generating a new one, as it is supposed to. This
1350 prevented TLS from working. If the file did exist, but contained invalid
1351 data, a new version was generated, as expected. It was only the case of a
1352 non-existent file that was broken.
1353
b0d9fc80
TK
1354TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1355 with a change in libdomainkeys > 0.64.
1356
1357TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1358 from DNS. If the selector record carries the flag, it now has
1359 precedence over the domain-wide flag.
1360
1361TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1362
47c7a64a
PH
1363PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1364 the use of a port name that isn't defined in /etc/services) occurred, the
1365 message was deferred as in a normal delivery, and thus remained on the
1366 spool, instead of being failed because of the mua_wrapper setting. This
1367 is now fixed, and I tidied up some of the mua_wrapper messages at the
1368 same time.
1369
a388bce4
SC
1370SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1371 the messages in a hash of arrays rather than using individual hashes.
1372 This is a bit cleaner and results in dramatic memory savings, albeit
1373 at a slight CPU cost.
1374
1375SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1376 as requested by Marc Sherman.
1377
1378SC/10 Eximstats: added histograms for user specified patterns as requested
1379 by Marc Sherman.
1380
0793e4ed
SC
1381SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1382
c58b88df
PH
1383PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1384 fopen() in the content-scanning modules that did not already have it.
1385
e7ad8a65 1386
7982096b
PH
1387Exim version 4.51
1388-----------------
1389
1a46a8c5
PH
1390TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1391 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1392
2f079f46 1393TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1394
1395TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1396
1397PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1398 to test Sieve filters that use "vacation".
1399
1400PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1401 that changes the way the GnuTLS parameters are stored in the cache file.
1402 The new format can be generated externally. For backward compatibility,
1403 if the data in the cache doesn't make sense, Exim assumes it has read an
1404 old-format file, and it generates new data and writes a new file. This
1405 means that you can't go back to an older release without removing the
1406 file.
1407
1408PH/03 A redirect router that has both "unseen" and "one_time" set does not
1409 work if there are any delivery delays because "one_time" forces the
1410 parent to be marked "delivered", so its unseen clone is never tried
1411 again. For this reason, Exim now forbids the simultaneous setting of
1412 these two options.
1413
1414PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1415 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1416 entry if you want to know the details. The fix, however, neglected to
1417 consider the case when local delivery batching is involved. The test for
1418 "previously delivered" was not happening when checking to see if an
1419 address could be batched with a previous (undelivered) one; under
1420 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1421 address.
1a46a8c5
PH
1422
1423PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1424 in its include files, and this causes problems building Exim.
1425
1426PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1427 header_syntax) but Exim was just ignoring anything given after a slash.
1428 In particular, this caused confusion with an attempt to use "verify =
1429 reverse_host_lookup/defer_ok". An error is now given when options are
1430 supplied for verify items that do not have them. (Maybe reverse_host_
1431 lookup should have a defer_ok option, but that's a different point.)
1432
1433PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1434 defined by RFC 821) to 2048, because there were problems with some AUTH
1435 commands, and RFC 1869 says the size should be increased for extended
1436 SMTP commands that take arguments.
1437
1438PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1439 Finch).
1440
1441PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1442 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1443
49c2d5ea
PH
1444PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1445 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1446 whatever). Otherwise the password may appear in the log. Following change
1447 PH/42 below, there is no longer a chance of it appearing in a bounce
1448 message.
49c2d5ea 1449
bf759a8b
PH
1450PH/11 Installed exipick version 20050225.0 from John Jetmore.
1451
83364d30
PH
1452PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1453 of its addresses was ever tried. (Bugzilla bug #2.)
1454
7999bbd7
PH
1455PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1456 the result incorrectly in the debug output. (It correctly added a newline
1457 to what was transported.)
1458
7dbf77c9
PH
1459TF/01 Added $received_time.
1460
74e0617f
PH
1461PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1462 commented out examples of how to interface to a virus scanner and to
1463 SpamAssassin. Also added commented examples of av_scanner and
1464 spamd_address settings.
1465
2f079f46
PH
1466PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1467 and controls are allowed in which ACLs. There were a couple of minor
1468 errors. Some of the entries in the conditions table (which is a table of
1469 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1470 negation of where the condition IS allowed.
1471
8c841523
PH
1472PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1473
7766a4f0
PH
1474PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1475 header file does not have a version number, so I've had to invent a new
1476 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1477 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1478 radiusclient), but it was contributed by a Radius user.
1479
8b417f2c
PH
1480PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1481 files or directories, for OpenSSL.
1482
901f42cb
PH
1483PH/19 When an Exim process that is running as root has to create an Exim log
1484 file, it does so in a subprocess that runs as exim:exim so as to get the
1485 ownership right at creation (otherwise, other Exim processes might see
1486 the file with the wrong ownership). There was no test for failure of this
1487 fork() call, which would lead to the process getting stuck as it waited
1488 for a non-existent subprocess. Forks do occasionally fail when resources
1489 run out. I reviewed all the other calls to fork(); they all seem to check
1490 for failure.
1491
f9b9210e
PH
1492PH/20 When checking for unexpected SMTP input at connect time (before writing
1493 the banner), Exim was not dealing correctly with a non-positive return
1494 from the read() function. If the client had disconnected by this time,
1495 the result was a log entry for a synchronization error with an empty
1496 string after "input=" when read() returned zero. If read() returned -1
1497 (an event I could not check), uninitialized data bytes were printed.
1498 There were reports of junk text (parts of files, etc) appearing after
1499 "input=".
1500
54cdb463
PH
1501PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1502
cf00dad6
PH
1503PH/22 Added support for macro redefinition, and (re)definition in between
1504 driver and ACL definitions.
1505
acb1b346
PH
1506PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1507 forgetting to use the resulting value; it was using the unexpanded value.
1508
c5ddb310
PH
1509PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1510 hadn't been configured. The fix is from Juergen Kreileder, who
1511 understands it better than I do:
1512
1513 "Here's what I see happening with three configured cyrus_sasl
1514 authenticators configured (plain, login, cram-md5):
1515
1516 On startup auth_cyrus_sasl_init() gets called for each of these.
1517 This means three calls to sasl_listmech() without a specified mech_list.
1518 => SASL tests which mechs of all available mechs actually work
1519 => three warnings about OTP not working
1520 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1521
1522 With the patch, sasl_listmech() also gets called three times. But now
1523 SASL's mech_list option is set to the server_mech specified in the the
1524 authenticator. Or in other words, the answer from sasl_listmech()
1525 gets limited to just the mech you're testing for (which is different
1526 for each call.)
1527 => the return list contains just 'plain' or 'login', 'cram-md5' or
1528 nothing depending on the value of ob->server_mech.
1529
1530 I've just tested the patch: Authentication still works fine,
1531 unavailable mechs specified in the exim configuration are still
1532 caught, and the auth.log warnings about OTP are gone."
1533
31619da6
PH
1534PH/25 When debugging is enabled, the contents of the command line are added
1535 to the debugging output, even when log_selector=+arguments is not
1536 specified.
1537
bebaf0fc
PH
1538PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1539 answer is "GNU", and only if the return is "GNU/something" is the answer
1540 "Linux".
1541
475fe28a
PH
1542PH/27 $acl_verify_message is now set immediately after the failure of a
1543 verification in an ACL, and so is available in subsequent modifiers. In
1544 particular, the message can be preserved by coding like this:
1545
1546 warn !verify = sender
1547 set acl_m0 = $acl_verify_message
1548
1549 Previously, $acl_verify_message was set only while expanding "message"
1550 and "log_message" when a very denied access.
1551
7e8bec7a
PH
1552PH/28 Modified OS/os.c-Linux with
1553
1554 -#ifndef OS_LOAD_AVERAGE
1555 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1556
1557 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1558 nomenclature these days.)
1559
e4a89c47
PH
1560PH/29 Installed patch from the Sieve maintainer that adds the options
1561 sieve_useraddress and sieve_subaddress to the redirect router.
1562
5ca2a9a1
PH
1563PH/30 In these circumstances:
1564 . Two addresses routed to the same list of hosts;
1565 . First host does not offer TLS;
1566 . First host accepts first address;
1567 . First host gives temporary error to second address;
1568 . Second host offers TLS and a TLS session is established;
1569 . Second host accepts second address.
1570 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1571 and peerdn, if requested) that were in fact used only for the second
1572 address.
7e8bec7a 1573
c688b954
PH
1574PH/31 When doing a callout as part of verifying an address, Exim was not paying
1575 attention to any local part prefix or suffix that was matched by the
1576 router that accepted the address. It now behaves in the same way as it
1577 does for delivery: the affixes are removed from the local part unless
1578 rcpt_include_affixes is set on the transport.
1579
fed77020
PH
1580PH/32 Add the sender address, as F=<...>, to the log line when logging a
1581 timeout during the DATA phase of an incoming message.
1582
7fe1560f
PH
1583PH/33 Sieve envelope tests were broken for match types other than :is. I have
1584 applied a patch sanctioned by the Sieve maintainer.
c688b954 1585
ebb6e6d5
PH
1586PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1587 the uid or gid is negative. A case of a negative gid caused this to be
1588 noticed. The fix allows for either to be negative.
1589
9c4e8f60
PH
1590PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1591 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1592 overlooked.
1593
1594PH/36 The change PH/12 above was broken. Fixed it.
1595
d7174846
PH
1596PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1597 the grounds that routing the same address twice would always produce the
1598 same answer. This might have been true once, but it is certainly no
1599 longer true now. Routing a child address may depend on the previous
1600 routing that produced that child. Some complicated redirection strategies
1601 went wrong when messages had multiple recipients, and made Exim's
1602 behaviour dependent on the order in which the addresses were given.
1603
1604 I have moved the duplicate checking until after the routing is complete.
1605 Exim scans the addresses that are assigned to local and remote
1606 transports, and removes any duplicates. This means that more work will be
1607 done, as duplicates will always all be routed, but duplicates are
1608 presumably rare, so I don't expect this is of any significance.
1609
1610 For deliveries to pipes, files, and autoreplies, the duplicate checking
1611 still happens during the routing process, since they are not going to be
1612 routed further.
1613
cfe75fc3
PH
1614PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1615 It corrects a timeout issue with spamd. This is Ian's comment: "The
1616 background is that sometimes spamd either never reads data from a
1617 connection it has accepted, or it never writes response data. The exiscan
1618 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1619 blindly assumes that writes won't block so it may never time out."
1620
be22d70e
PH
1621PH/39 Allow G after quota size as well as K and M.
1622
0612b098
PH
1623PH/40 The value set for $authenticated_id in an authenticator may not contain
1624 binary zeroes or newlines because the value is written to log lines and
1625 to spool files. There was no check on this. Now the value is run through
1626 the string_printing() function so that such characters are converted to
1627 printable escape sequences.
1628
2e0c1448
PH
1629PH/41 $message_linecount is a new variable that contains the total number of
1630 lines in the message. Compare $body_linecount, which is the count for the
1631 body only.
1632
447d236c
PH
1633PH/42 Exim no longer gives details of delivery errors for specific addresses in
1634 bounce and delay warning messages, except in certain special cases, which
1635 are as follows:
1636
1637 (a) An SMTP error message from a remote host;
1638 (b) A message specified in a :fail: redirection;
1639 (c) A message specified in a "fail" command in a system filter;
1640 (d) A message specified in a FAIL return from the queryprogram router;
1641 (e) A message specified by the cannot_route_message router option.
1642
1643 In these cases only, Exim does include the error details in bounce and
1644 warning messages. There are also a few cases where bland messages such
1645 as "unrouteable address" or "local delivery error" are given.
1646
d20976dc
PH
1647PH/43 $value is now also set for the "else" part of a ${run expansion.
1648
f656d135
PH
1649PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1650 being worked on, but at least Exim now implements the latest version to
1651 play with."
1652
2e2a30b4
PH
1653PH/45 In a pipe transport, although a timeout while waiting for the pipe
1654 process to complete was treated as a delivery failure, a timeout while
1655 writing the message to the pipe was logged, but erroneously treated as a
1656 successful delivery. Such timeouts include transport filter timeouts. For
1657 consistency with the overall process timeout, these timeouts are now
1658 treated as errors, giving rise to delivery failures by default. However,
1659 there is now a new Boolean option for the pipe transport called
1660 timeout_defer, which, if set TRUE, converts the failures into defers for
1661 both kinds of timeout. A transport filter timeout is now identified in
1662 the log output.
1663
9176e9f0
PH
1664PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1665 systems where "make" and "gmake" are different, calling "gmake" at top
1666 level broke things. I've arranged for the value of $(MAKE) to be passed
1667 from the Makefile to this script so that it can call the same version of
1668 "make".
1669
7982096b 1670
bbe902f0
PH
1671A note about Exim versions 4.44 and 4.50
1672----------------------------------------
1673
1674Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1675changes of various kinds. As a consequence, a big documentation update was
1676needed. This delayed the release for rather longer than seemed good, especially
1677in the light of a couple of (minor) security issues. Therefore, the changes
1678that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1679release. So 4.44 and 4.50 are in effect two different branches that both start
1680from 4.43.
1681
1682I have left the 4.50 change log unchanged; it contains all the changes since
16834.43. The change log for 4.44 is below; many of its items are identical to
1684those for 4.50. This seems to be the most sensible way to preserve the
1685historical information.
1686
1687
f7b63901 1688Exim version 4.50
495ae4b0
PH
1689-----------------
1690
5fe762f6
PH
1691 1. Minor wording change to the doc/README.SIEVE file.
1692
139059f6 1693 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1694 computation of the current number of files was incorrect.
495ae4b0 1695
7086e875
PH
1696 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1697 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1698 place.
1699
35af9f61
PH
1700 4. Give more explanation in the error message when the command for a transport
1701 filter fails to execute.
1702
b668c215
PH
1703 5. There are several places where Exim runs a non-Exim command in a
1704 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1705 was being done only for the command run by the queryprogram router. It is
1706 now done for all such subprocesses. The other cases are: ${run, transport
1707 filters, and the commands run by the lmtp and pipe transports.
1708
a494b1e1
PH
1709 6. Added CONFIGURE_GROUP build-time option.
1710
1711 7. Some older OS have a limit of 256 on the maximum number of file
1712 descriptors. Exim was using setrlimit() to set 1000 as a large value
1713 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1714 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1715
c5fcb476
PH
1716 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1717 was an oversight, and furthermore, ever since the addition of extra
1718 controls (e.g. 4.43/32), the checks on when to allow different forms of
1719 "control" were broken. There should now be diagnostics for all cases when a
1720 control that does not make sense is encountered.
1721
69358f02
PH
1722 9. Added the /retain_sender option to "control=submission".
1723
5be20824
PH
172410. $recipients is now available in the predata ACL (oversight).
1725
eb2c0248
PH
172611. Tidy the search cache before the fork to do a delivery from a message
1727 received from the command line. Otherwise the child will trigger a lookup
1728 failure and thereby defer the delivery if it tries to use (for example) a
1729 cached ldap connection that the parent has called unbind on.
1730
2a3eea10
PH
173112. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1732 of $address_data from the recipient verification was clobbered by the
1733 sender verification.
1734
173513. The value of address_data from a sender verification is now available in
1736 $sender_address_data in subsequent conditions in the ACL statement.
1737
23c7ff99
PH
173814. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1739
4deaf07d
PH
174015. Added a new option "connect=<time>" to callout options, to set a different
1741 connection timeout.
1742
926e1192
PH
174316. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1744 was its contents. (It was OK if the option was not defined at all.)
1745
650edc6f
PH
174617. A "Completed" log line is now written for messages that are removed from
1747 the spool by the -Mrm option.
1748
2c7db3f5
PH
174918. New variables $sender_verify_failure and $recipient_verify_failure contain
1750 information about exactly what failed.
1751
3d235903
PH
175219. Added -dd to debug only the daemon process.
1753
7c7ad977
PH
175420. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1755 handles timeouts, both on the server side and network timeouts. Renamed the
1756 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1757
981756db
PH
175821. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1759 It is now set to "smtps".
1760
d4eb88df
PH
176122. $host_address is now set to the target address during the checking of
1762 ignore_target_hosts.
1763
176423. When checking ignore_target_hosts for an ipliteral router, no host name was
1765 being passed; this would have caused $sender_host_name to have been used if
1766 matching the list had actually called for a host name (not very likely,
1767 since this list is usually IP addresses). A host name is now passed as
1768 "[x.x.x.x]".
1769
7d468ab8
PH
177024. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1771 code that specifies a non-restarting handler (typically sigaction() in
1772 modern systems) in an attempt to fix a rare and obscure crash bug.
1773
177425. Narrowed the window for a race in the daemon that could cause it to ignore
1775 SIGCHLD signals. This is not a major problem, because they are used only to
1776 wake it up if nothing else does.
1777
62c0818f
PH
177826. A malformed maildirsize file could cause Exim to calculate negative values
1779 for the mailbox size or file count. Odd effects could occur as a result.
1780 The maildirsize information is now recalculated if the size or filecount
1781 end up negative.
1782
26034054
PH
178327. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1784 support for a long time. Removed HAVE_SYS_VFS_H.
1785
af66f652
PH
178628. Installed the latest version of exipick from John Jetmore.
1787
90af77f4
PH
178829. In an address list, if the pattern was not a regular expression, an empty
1789 subject address (from a bounce message) matched only if the pattern was an
1790 empty string. Non-empty patterns were not even tested. This was the wrong
1791 because it is perfectly reasonable to use an empty address as part of a
1792 database query. An empty address is now tested by patterns that are
1793 lookups. However, all the other forms of pattern expect the subject to
1794 contain a local part and a domain, and therefore, for them, an empty
1795 address still always fails if the pattern is not itself empty.
1796
d8ef3577
PH
179730. Exim went into a mad DNS loop when attempting to do a callout where the
1798 host was specified on an smtp transport, and looking it up yielded more
1799 than one IP address.
1800
5cb8cbc6
PH
180131. Re-factored the code for checking spool and log partition space into a
1802 function that finds that data and another that does the check. The former
1803 is then used to implement four new variables: $spool_space, $log_space,
1804 $spool_inodes, and $log_inodes.
1805
14702f5b
PH
180632. The RFC2047 encoding function was originally intended for short strings
1807 such as real names; it was not keeping to the 75-character limit for
1808 encoded words that the RFC imposes. It now respects the limit, and
1809 generates multiple encoded words if necessary. To be on the safe side, I
1810 have increased the buffer size for the ${rfc2047: expansion operator from
1811 1024 to 2048 bytes.
1812
063b1e99
PH
181333. It is now permitted to omit both strings after an "if" condition; if the
1814 condition is true, the result is "true". As before, when the second string
1815 is omitted, a false condition yields an empty string. This makes it less
1816 cumbersome to write custom ACL and router conditions.
1817
652e1b65
PH
181834. Failure to deliver a bounce message always caused it to be frozen, even if
1819 there was an errors_to setting on the router. The errors_to setting is now
1820 respected.
1821
6f0c9a4f
PH
182235. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1823 canonical form (fully expanded) before being placed in
1824 $sender_host_address.
1825
33397d19
PH
182636. The table in the code that translates DNS record types into text (T_A to
1827 "A" for instance) was missing entries for NS and CNAME. It is just possible
1828 that this could have caused confusion if both these types were looked up
1829 for the same domain, because the text type is used as part of Exim's
1830 per-process caching. But the chance of anyone hitting this buglet seems
1831 very small.
1832
7bb56e1f
PH
183337. The dnsdb lookup has been extended in a number of ways.
1834
1835 (1) There is a new type, "zns", which walks up the domain tree until it
1836 finds some nameserver records. It should be used with care.
1837
ea3bc19b
PH
1838 (2) There is a new type, "mxh", which is like "mx" except that it returns
1839 just the host names, not the priorities.
1840
1841 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1842 looked up. The behaviour when one of the lookups defers can be
1843 controlled by a keyword.
7bb56e1f 1844
ea3bc19b 1845 (4) It is now possible to specify the separator character for use when
7bb56e1f 1846 multiple records are returned.
33397d19 1847
0bcb2a0e
PH
184838. The dnslists ACL condition has been extended: it is now possible to supply
1849 a list of IP addresses and/or domains to be looked up in a particular DNS
1850 domain.
1851
2ac0e484
PH
185239. Added log_selector=+queue_time_overall.
1853
4e1fde53
PH
185440. When running the queue in the test harness, wait just a tad after forking a
1855 delivery process, to get repeatability of debugging output.
1856
de365ded
PH
185741. Include certificate and key file names in error message when GnuTLS fails
1858 to set them up, because the GnuTLS error message doesn't include the name
1859 of the failing file when there is a problem reading it.
1860
f05da2e8
PH
186142. Allow both -bf and -bF in the same test run.
1862
d6453af2
PH
186343. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1864
f7b63901
PH
186544. The "Exiscan patch" is now merged into the mainline Exim source.
1866
186745. Sometimes the final signoff response after QUIT could fail to get
1868 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1869 < 0 before doing a fflush(). This bug looks as though it goes back to the
1870 introduction of TLS in release 3.20, but "sometimes" must have been rare
1871 because the tests only now provoked it.
1872
a444213a
PH
187346. Reset the locale to "C" after calling embedded Perl, in case it was changed
1874 (this can affect the format of dates).
1875
0ec020ea
PH
187647. exim_tidydb, when checking for the continued existence of a message for
1877 which it has found a message-specific retry record, was not finding
1878 messages that were in split spool directories. Consequently, it was
1879 deleting retry records that should have stayed in existence.
1880
b1206957
PH
188148. Steve fixed some bugs in eximstats.
1882
188349. The SPA authentication driver was not abandoning authentication and moving
1884 on to the next authenticator when an expansion was forced to fail,
1885 contradicting the general specification for all authenticators. Instead it
1886 was generating a temporary error. It now behaves as specified.
1887
26dd5a95
PH
188850. The default ordering of permitted cipher suites for GnuTLS was pessimal
1889 (the order specifies the preference for clients). The order is now AES256,
1890 AES128, 3DES, ARCFOUR128.
1891
343b2385
PH
189251. Small patch to Sieve code - explicitly set From: when generating an
1893 autoreply.
1894
1c5466b9
PH
189552. Exim crashed if a remote delivery caused a very long error message to be
1896 recorded - for instance if somebody sent an entire SpamAssassin report back
1897 as a large number of 550 error lines. This bug was coincidentally fixed by
1898 increasing the size of one of Exim's internal buffers (big_buffer) that
1899 happened as part of the Exiscan merge. However, to be on the safe side, I
1900 have made the code more robust (and fixed the comments that describe what
1901 is going on).
1902
55ee9ee3
PH
190353. Now that there can be additional text after "Completed" in log lines (if
1904 the queue_time_overall log selector is set), a one-byte patch to exigrep
1905 was needed to allow it to recognize "Completed" as not the last thing in
1906 the line.
1907
d38f8232
PH
190854. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1909 patch that reportedly fixes this has been added. I am not expert enough to
1910 create a test for it. This is what the patch creator wrote:
1911
1912 "I found a little strange behaviour of ldap code when working with
1913 Windows 2003 AD Domain, where users was placed in more than one
1914 Organization Units. When I tried to give exim partial DN, the exit code
1915 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1916 But simultaneously result of request was absolutely normal ldap result,
1917 so I produce this patch..."
1918
3295e65b
PH
1919 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1920 REFERENCE, so I have modified the code to exclude the patch when that macro
1921 is not defined.
1922
7102e136
PH
192355. Some experimental protocols are using DNS PTR records for new purposes. The
1924 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1925 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1926 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1927 CAN-2005-0021
7102e136 1928
3ca0ba97
PH
192956. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1930
c2bcbe20
PH
193157. Double the size of the debug message buffer (to 2048) so that more of very
1932 long debug lines gets shown.
1933
18ce445d
PH
193458. The exicyclog utility now does better if the number of log files to keep
1935 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1936
1f5b4c3d
PH
193759. Two changes related to the smtp_active_hostname option:
1938
1939 (1) $smtp_active_hostname is now available as a variable.
1940 (2) The default for smtp_banner uses $smtp_active_hostname instead
1941 of $primary_hostname.
1942
b975ba52
PH
194360. The host_aton() function is supposed to be passed a string that is known
1944 to be a valid IP address. However, in the case of IPv6 addresses, it was
1945 not checking this. This is a hostage to fortune. Exim now panics and dies
1946 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1947 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1948 components; fortuitously, this particular loophole had already been fixed
1949 by change 4.50/55 above.
1950
1951 If there are any other similar loopholes, the new check in host_aton()
1952 itself should stop them being exploited. The report I received stated that
1953 data on the command line could provoke the exploit when Exim was running as
1954 exim, but did not say which command line option was involved. All I could
1955 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1956 running as the user.
ea3a6f44 1957 CAN-2005-0021
85b87bc2
PH
1958
195961. There was a buffer overflow vulnerability in the SPA authentication code
1960 (which came originally from the Samba project). I have added a test to the
1961 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1962 CAN-2005-0022
b975ba52 1963
17ffcae7
PH
196462. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1965 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1966
d95f9fdb
PH
196763. The daemon start-up calls getloadavg() while still root for those OS that
1968 need the first call to be done as root, but it missed one case: when
1969 deliver_queue_load_max is set with deliver_drop_privilege. This is
1970 necessary for the benefit of the queue runner, because there is no re-exec
1971 when deliver_drop_privilege is set.
1972
86b8287f
PH
197364. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1974 This has been fixed.
1975
60dc5e56
PH
197665. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1977 was in use, was not putting the data itself into the right store pool;
1978 consequently, it could be overwritten for a subsequent message in the same
1979 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1980 the caching.)
1981
533244af
PH
198266. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1983
a5a28604
PH
198467. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1985 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1986 the function were treating the return as a boolean value, which happened to
1987 work because 0=false and not-0=true, but is not correct code.
1988
7e634d24
PH
198968. The host_aton() function was not handling scoped IPv6 addresses (those
1990 with, for example, "%eth0" on the end) correctly.
1991
3e11c26b
PH
199269. Fixed some compiler warnings in acl.c for the bitmaps specified with
1993 negated items (that is, ~something) in unsigned ints. Some compilers
1994 apparently mutter when there is no cast.
1995
6729cf78
PH
199670. If an address verification called from an ACL failed, and did not produce a
1997 user-specific message (i.e. there was only a "system" message), nothing was
1998 put in $acl_verify_message. In this situation, it now puts the system
1999 message there.
2000
00f00ca5
PH
200171. Change 4.23/11 added synchronization checking at the start of an SMTP
2002 session; change 4.31/43 added the unwanted input to the log line - except
2003 that it did not do this in the start of session case. It now does.
2004
c9bdd01c
PH
200572. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2006 This is wrong and can cause the other end to generate a synchronization
2007 error if it is another Exim or anything else that does the synchronization
2008 check. A QUIT command is no longer sent after a timeout.
2009
d43194df
PH
201073. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2011 during host lookups.
2012
fe5b5d0b
PH
201374. The defer_ok option of callout verification was not working if it was used
2014 when verifying addresses in header lines, that is, for this case:
2015
2016 verify = header_sender/callout=defer_ok
2017
76a2d7ba
PH
201875. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2019 those file descriptors could be used for SMTP connections. If anything
2020 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2021 could be sent to the SMTP client, causing chaos. The daemon now opens
2022 stdin, stdout, and stderr to /dev/null when it puts itself into the
2023 background.
2024
202576. Arrange for output from Perl's "warn" command to be written to Exim's main
2026 log by default. The user can override this with suitable Perl magic.
2027
04f7d5b9
PH
202877. The use of log_message on a "discard" ACL verb, which is supposed to add to
2029 the log message when discard triggers, was not working for the DATA ACL or
2030 for the non-SMTP ACL.
2031
bc60667e
PH
203278. Error message wording change in sieve.c.
2033
bb6e88ff
PH
203479. If smtp_accept_max_per_host was set, the number of connections could be
2035 restricted to fewer than expected, because the daemon was trying to set up
2036 a new connection before checking whether the processes handling previous
2037 connections had finished. The check for completed processes is now done
2038 earlier. On busy systems, this bug wouldn't be noticed because something
2039 else would have woken the daemon, and it would have reaped the completed
2040 process earlier.
2041
1e70f85b
PH
204280. If a message was submitted locally by a user whose login name contained one
2043 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2044 It caused a spool format error. I have fixed the spool reading code. A
2045 related problem was that the "from" clause in the Received: line became
2046 illegal because of the space(s). It is now covered by ${quote_local_part.
2047
204881. Included the latest eximstats from Steve (adds average sizes to HTML Top
2049 tables).
2050
4e01f9d6
PH
205182. Updated OS/Makefile-AIX as per message from Mike Meredith.
2052
1ee1cef2
PH
205383. Patch from Sieve maintainer to fix unterminated string problem in
2054 "vacation" handling.
2055
6e2b4ccc
PH
205684. Some minor changes to the Linux configuration files to help with other
2057 OS variants using glibc.
2058
8e669ac1
PH
205985. One more patch for Sieve to update vacation handling to latest spec.
2060
495ae4b0 2061
bbe902f0
PH
2062----------------------------------------------------
2063See the note above about the 4.44 and 4.50 releases.
2064----------------------------------------------------
2065
2066
2067Exim version 4.44
2068-----------------
2069
2070 1. Change 4.43/35 introduced a bug that caused file counts to be
2071 incorrectly computed when quota_filecount was set in an appendfile
2072 transport
2073
2074 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2075 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2076 place.
2077
2078 3. Give more explanation in the error message when the command for a transport
2079 filter fails to execute.
2080
2081 4. There are several places where Exim runs a non-Exim command in a
2082 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2083 was being done only for the command run by the queryprogram router. It is
2084 now done for all such subprocesses. The other cases are: ${run, transport
2085 filters, and the commands run by the lmtp and pipe transports.
2086
2087 5. Some older OS have a limit of 256 on the maximum number of file
2088 descriptors. Exim was using setrlimit() to set 1000 as a large value
2089 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2090 systems. I've change it so that if it can't get 1000, it tries for 256.
2091
2092 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2093 was an oversight, and furthermore, ever since the addition of extra
2094 controls (e.g. 4.43/32), the checks on when to allow different forms of
2095 "control" were broken. There should now be diagnostics for all cases when a
2096 control that does not make sense is encountered.
2097
2098 7. $recipients is now available in the predata ACL (oversight).
2099
2100 8. Tidy the search cache before the fork to do a delivery from a message
2101 received from the command line. Otherwise the child will trigger a lookup
2102 failure and thereby defer the delivery if it tries to use (for example) a
2103 cached ldap connection that the parent has called unbind on.
2104
2105 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2106 of $address_data from the recipient verification was clobbered by the
2107 sender verification.
2108
210910. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2110 was its contents. (It was OK if the option was not defined at all.)
2111
211211. A "Completed" log line is now written for messages that are removed from
2113 the spool by the -Mrm option.
2114
211512. $host_address is now set to the target address during the checking of
2116 ignore_target_hosts.
2117
211813. When checking ignore_target_hosts for an ipliteral router, no host name was
2119 being passed; this would have caused $sender_host_name to have been used if
2120 matching the list had actually called for a host name (not very likely,
2121 since this list is usually IP addresses). A host name is now passed as
2122 "[x.x.x.x]".
2123
212414. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2125 code that specifies a non-restarting handler (typically sigaction() in
2126 modern systems) in an attempt to fix a rare and obscure crash bug.
2127
212815. Narrowed the window for a race in the daemon that could cause it to ignore
2129 SIGCHLD signals. This is not a major problem, because they are used only to
2130 wake it up if nothing else does.
2131
213216. A malformed maildirsize file could cause Exim to calculate negative values
2133 for the mailbox size or file count. Odd effects could occur as a result.
2134 The maildirsize information is now recalculated if the size or filecount
2135 end up negative.
2136
213717. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2138 support for a long time. Removed HAVE_SYS_VFS_H.
2139
ea3a6f44 214018. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2141
214219. Allow an empty sender to be matched against a lookup in an address list.
2143 Previously the only cases considered were a regular expression, or an
2144 empty pattern.
2145
214620. Exim went into a mad DNS lookup loop when doing a callout where the
2147 host was specified on the transport, if the DNS lookup yielded more than
2148 one IP address.
2149
ea3a6f44
NM
215021. The RFC2047 encoding function was originally intended for short strings
2151 such as real names; it was not keeping to the 75-character limit for
2152 encoded words that the RFC imposes. It now respects the limit, and
2153 generates multiple encoded words if necessary. To be on the safe side, I
2154 have increased the buffer size for the ${rfc2047: expansion operator from
2155 1024 to 2048 bytes.
bbe902f0 2156
ea3a6f44
NM
215722. Failure to deliver a bounce message always caused it to be frozen, even if
2158 there was an errors_to setting on the router. The errors_to setting is now
2159 respected.
bbe902f0
PH
2160
216123. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2162 canonical form (fully expanded) before being placed in
2163 $sender_host_address.
2164
216524. Updated eximstats to version 1.33
2166
ea3a6f44
NM
216725. Include certificate and key file names in error message when GnuTLS fails
2168 to set them up, because the GnuTLS error message doesn't include the name
2169 of the failing file when there is a problem reading it.
bbe902f0
PH
2170
217126. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2172 As per change 25.
bbe902f0 2173
ea3a6f44
NM
217427. Reset the locale to "C" after calling embedded Perl, in case it was changed
2175 (this can affect the format of dates).
bbe902f0 2176
ea3a6f44
NM
217728. exim_tidydb, when checking for the continued existence of a message for
2178 which it has found a message-specific retry record, was not finding
2179 messages that were in split spool directories. Consequently, it was
2180 deleting retry records that should have stayed in existence.
bbe902f0
PH
2181
218229. eximstats updated to version 1.35
2183 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2184 1.35 - bugfix such that pie charts by volume are generated correctly
2185
ea3a6f44
NM
218630. The SPA authentication driver was not abandoning authentication and moving
2187 on to the next authenticator when an expansion was forced to fail,
2188 contradicting the general specification for all authenticators. Instead it
2189 was generating a temporary error. It now behaves as specified.
bbe902f0 2190
ea3a6f44
NM
219131. The default ordering of permitted cipher suites for GnuTLS was pessimal
2192 (the order specifies the preference for clients). The order is now AES256,
2193 AES128, 3DES, ARCFOUR128.
bbe902f0 2194
ea3a6f44
NM
219531. Small patch to Sieve code - explicitly set From: when generating an
2196 autoreply.
bbe902f0 2197
ea3a6f44
NM
219832. Exim crashed if a remote delivery caused a very long error message to be
2199 recorded - for instance if somebody sent an entire SpamAssassin report back
2200 as a large number of 550 error lines. This bug was coincidentally fixed by
2201 increasing the size of one of Exim's internal buffers (big_buffer) that
2202 happened as part of the Exiscan merge. However, to be on the safe side, I
2203 have made the code more robust (and fixed the comments that describe what
2204 is going on).
bbe902f0 2205
ea3a6f44
NM
220633. Some experimental protocols are using DNS PTR records for new purposes. The
2207 keys for these records are domain names, not reversed IP addresses. The
2208 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2209 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2210 CAN-2005-0021
2211
ea3a6f44
NM
221234. The host_aton() function is supposed to be passed a string that is known
2213 to be a valid IP address. However, in the case of IPv6 addresses, it was
2214 not checking this. This is a hostage to fortune. Exim now panics and dies
2215 if the condition is not met. A case was found where this could be provoked
2216 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2217 components; fortuitously, this particular loophole had already been fixed
2218 by change 4.50/55 or 4.44/33 above.
2219
2220 If there are any other similar loopholes, the new check in host_aton()
2221 itself should stop them being exploited. The report I received stated that
2222 data on the command line could provoke the exploit when Exim was running as
2223 exim, but did not say which command line option was involved. All I could
2224 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2225 running as the user.
bbe902f0
PH
2226 CAN-2005-0021
2227
ea3a6f44
NM
222835. There was a buffer overflow vulnerability in the SPA authentication code
2229 (which came originally from the Samba project). I have added a test to the
2230 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2231 CAN-2005-0022
2232
ea3a6f44
NM
223336. The daemon start-up calls getloadavg() while still root for those OS that
2234 need the first call to be done as root, but it missed one case: when
2235 deliver_queue_load_max is set with deliver_drop_privilege. This is
2236 necessary for the benefit of the queue runner, because there is no re-exec
2237 when deliver_drop_privilege is set.
bbe902f0 2238
ea3a6f44
NM
223937. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2240 was in use, was not putting the data itself into the right store pool;
2241 consequently, it could be overwritten for a subsequent message in the same
2242 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2243 the caching.)
bbe902f0 2244
ea3a6f44
NM
224538. Sometimes the final signoff response after QUIT could fail to get
2246 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2247 < 0 before doing a fflush(). This bug looks as though it goes back to the
2248 introduction of TLS in release 3.20, but "sometimes" must have been rare
2249 because the tests only now provoked it.
bbe902f0
PH
2250
2251
495ae4b0
PH
2252Exim version 4.43
2253-----------------
2254
2255 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2256 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2257 Now it returns an integer. A number of calls were still expecting a T/F
2258 return. Fortuitously, in all cases, the tests worked in OK situations,
2259 which is the norm. However, things would have gone wrong on any write
2260 failures on the smtp file descriptor. This function is used when sending
2261 messages over SMTP and also when doing verify callouts.
2262
2263 2. When Exim is called to do synchronous delivery of a locally submitted
2264 message (the -odf or -odi options), it no longer closes stderr before doing
2265 the delivery.
2266
2267 3. Implemented the mua_wrapper option.
2268
2269 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2270
2271 5. Implemented the functions header_remove(), header_testname(),
2272 header_add_at_position(), and receive_remove_recipient(), and exported them
2273 to local_scan().
2274
2275 6. If an ACL "warn" statement specified the addition of headers, Exim already
2276 inserted X-ACL-Warn: at the start if there was no header name. However, it
2277 was not making this test for the second and subsequent header lines if
2278 there were newlines in the string. This meant that an invalid header could
2279 be inserted if Exim was badly configured.
2280
2281 7. Allow an ACL "warn" statement to add header lines at the start or after all
2282 the Received: headers, as well as at the end.
2283
2284 8. Added the rcpt_4xx retry error code.
2285
2286 9. Added postmaster_mailfrom=xxx to callout verification option.
2287
228810. Added mailfrom=xxxx to the callout verification option, for verify=
2289 header_sender only.
2290
229111. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2292 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2293
229412. Inserted some casts to stop certain compilers warning when using pointer
2295 differences as field lengths or precisions in printf-type calls (mostly
2296 affecting debugging statements).
2297
229813. Added optional readline() support for -be (dynamically loaded).
2299
230014. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2301 same clock tick as a message's arrival, so that its received time was the
2302 same as the "first fail" time on the retry record, and that message
2303 remained on the queue past the ultimate address timeout, every queue runner
2304 would try a delivery (because it was past the ultimate address timeout) but
2305 after another failure, the ultimate address timeout, which should have then
2306 bounced the address, did not kick in. This was a "< instead of <=" error;
2307 in most cases the first failure would have been in the next clock tick
2308 after the received time, and all would be well.
2309
231015. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2311 being recognized when the domain list was tested by the match_domain
2312 condition in an expansion string.
2313
231416. Added the ${str2b64: operator.
2315
231617. Exim was always calling setrlimit() to set a large limit for the number of
2317 processes, without checking whether the existing limit was already
2318 adequate. (It did check for the limit on file descriptors.) Furthermore,
2319 errors from getrlimit() and setrlimit() were being ignored. Now they are
2320 logged to the main and panic logs, but Exim does carry on, to try to do its
2321 job under whatever limits there are.
2322
232318. Imported PCRE 5.0.
2324
232519. Trivial typo in log message " temporarily refused connection" (the leading
2326 space).
2327
232820. If the log selector return_path_on_delivery was set and an address was
2329 redirected to /dev/null, the delivery process crashed because it assumed
2330 that a return path would always be set for a "successful" delivery. In this
2331 case, the whole delivery is bypassed as an optimization, and therefore no
2332 return path is set.
2333
233421. Internal re-arrangement: the function for sending a challenge and reading
2335 a response while authentication was assuming a zero-terminated challenge
2336 string. It's now changed to take a pointer and a length, to allow for
2337 binary data in such strings.
2338
233922. Added the cyrus_sasl authenticator (code supplied by MBM).
2340
234123. Exim was not respecting finduser_retries when seeking the login of the
2342 uid under which it was called; it was always trying 10 times. (The default
2343 setting of finduser_retries is zero.) Also, it was sleeping after the final
2344 failure, which is pointless.
2345
234624. Implemented tls_on_connect_ports.
2347
234825. Implemented acl_smtp_predata.
2349
235026. If the domain in control=submission is set empty, Exim assumes that the
2351 authenticated id is a complete email address when it generates From: or
2352 Sender: header lines.
2353
235427. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2355 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2356 chown and chgrp in /bin and hostname in /usr/bin.
2357
235828. Exim was keeping the "process log" file open after each use, just as it
2359 does for the main log. This opens the possibility of it remaining open for
2360 long periods when the USR1 signal hits a daemon. Occasional processlog
2361 errors were reported, that could have been caused by this. Anyway, it seems
2362 much more sensible not to leave this file open at all, so that is what now
2363 happens.
2364
236529. The long-running daemon process does not normally write to the log once it
2366 has entered its main loop, and it closes the log before doing so. This is
2367 so that log files can straightforwardly be renamed and moved. However,
2368 there are a couple of unusual error situations where the daemon does write
2369 log entries, and I had neglected to close the log afterwards.
2370
237130. The text of an SMTP error response that was received during a remote
2372 delivery was being truncated at 512 bytes. This is too short for some of
2373 the long messages that one sometimes sees. I've increased the limit to
2374 1024.
2375
237631. It is now possible to make retry rules that apply only when a message has a
2377 specific sender, in particular, an empty sender.
2378
237932. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2380 it possible to be selective about when SMTP synchronization is enforced.
2381
238233. Added "control = caseful_local_part" and "control = "caselower_local_part".
2383
238432. Implemented hosts_connection_nolog.
2385
238633. Added an ACL for QUIT.
2387
238834. Setting "delay_warning=" to disable warnings was not working; it gave a
2389 syntax error.
2390
239135. Added mailbox_size and mailbox_filecount to appendfile.
2392
239336. Added control = no_multiline_responses to ACLs.
2394
239537. There was a bug in the logic of the code that waits for the clock to tick
2396 in the case where the clock went backwards by a substantial amount such
2397 that the microsecond fraction of "now" was more than the microsecond
2398 fraction of "then" (but the whole seconds number was less).
2399
240038. Added support for the libradius Radius client library this is found on
2401 FreeBSD (previously only the radiusclient library was supported).
2402
2403
2404Exim version 4.42
2405-----------------
2406
2407 1. When certain lookups returned multiple values in the form name=value, the
2408 quoting of the values was not always being done properly. Specifically:
2409 (a) If the value started with a double quote, but contained no whitespace,
2410 it was not quoted.
2411 (b) If the value contained whitespace other than a space character (i.e.
2412 tabs or newlines or carriage returns) it was not quoted.
2413 This fix has been applied to the mysql and pgsql lookups by writing a
2414 separate quoting function and calling it from the lookup code. The fix
2415 should probably also be applied to nisplus, ibase and oracle lookups, but
2416 since I cannot test any of those, I have not disturbed their existing code.
2417
2418 2. A hit in the callout cache for a specific address caused a log line with no
2419 reason for rejecting RCPT. Now it says "Previous (cached) callout
2420 verification failure".
2421
2422 3. There was an off-by-one bug in the queryprogram router. An over-long
2423 return line was truncated at 256 instead of 255 characters, thereby
2424 overflowing its buffer with the terminating zero. As well as fixing this, I
2425 have increased the buffer size to 1024 (and made a note to document this).
2426
2427 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2428 when Exim is waiting for an SMTP response from a remote server, Exim
2429 restarts its select() call on the socket, thereby resetting its timeout.
2430 This is not a problem when such interrupts are rare. Somebody set up a cron
2431 job to run exiwhat every 2 minutes, which is less than the normal select()
2432 timeout (5 or 10 minutes). This meant that the select() timeout never
2433 kicked in because it was always reset. I have fixed this by comparing the
2434 time when an interrupt arrives with the time at the start of the first call
2435 to select(). If more time than the timeout has elapsed, the interrupt is
2436 treated as a timeout.
2437
2438 5. Some internal re-factoring in preparation for the addition of Sieve
2439 extensions (by MH). In particular, the "personal" test is moved to a
2440 separate function, and given an option for scanning Cc: and Bcc: (which is
2441 not set for Exim filters).
2442
2443 6. When Exim created an email address using the login of the caller as the
2444 local part (e.g. when creating a From: or Sender: header line), it was not
2445 quoting the local part when it contained special characters such as @.
2446
2447 7. Installed new OpenBSD configuration files.
2448
2449 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2450 try to make them clearer.
2451
2452 9. Callout options, other than the timeout value, were being ignored when
2453 verifying sender addresses in header lines. For example, when using
2454
2455 verify = header_sender/callout=no_cache
2456
2457 the cache was (incorrectly) being used.
2458
245910. Added a missing instance of ${EXE} to the exim_install script; this affects
2460 only the Cygwin environment.
2461
246211. When return_path_on_delivery was set as a log selector, if different remote
2463 addresses in the same message used different return paths and parallel
2464 remote delivery occurred, the wrong values would sometimes be logged.
2465 (Whenever a remote delivery process finished, the return path value from
2466 the most recently started remote delivery process was logged.)
2467
246812. RFC 3848 specifies standard names for the "with" phrase in Received: header
2469 lines when AUTH and/or TLS are in use. This is the "received protocol"
2470 field. Exim used to use "asmtp" for authenticated SMTP, without any
2471 indication (in the protocol name) for TLS use. Now it follows the RFC and
2472 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2473 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2474 names appear in log lines as well as in Received: header lines.
2475
247613. Installed MH's patches for Sieve to add the "copy" and "vacation"
2477 extensions, and comparison tests, and to fix some bugs.
2478
247914. Changes to the "personal" filter test:
2480
2481 (1) The test was buggy in that it was just doing the equivalent of
2482 "contains" tests on header lines. For example, if a user's address was
2483 anne@some.where, the "personal" test would incorrectly be true for
2484
2485 To: susanne@some.where
2486
2487 This test is now done by extracting each address from the header in turn,
2488 and checking the entire address. Other tests that are part of "personal"
2489 are now done using regular expressions (for example, to check local parts
2490 of addresses in From: header lines).
2491
2492 (2) The list of non-personal local parts in From: addresses has been
2493 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2494 taken from the Sieve specification recommendations.
2495
2496 (3) If the message contains any header line starting with "List-" it is
2497 treated as non-personal.
2498
2499 (4) The test for "circular" in the Subject: header line has been removed
2500 because it now seems ill-conceived.
2501
250215. Minor typos in src/EDITME comments corrected.
2503
250416. Installed latest exipick from John Jetmore.
2505
250617. If headers_add on a router specified a text string that was too long for
2507 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2508 of string_sprintf() is now avoided.
2509
251018. $message_body_size was not set (it was always zero) when running the DATA
2511 ACL and the local_scan() function.
2512
251319. For the "mail" command in an Exim filter, no default was being set for
2514 the once_repeat time, causing a random time value to be used if "once" was
2515 specified. (If the value happened to be <= 0, no repeat happened.) The
2516 default is now 0s, meaning "never repeat". The "vacation" command was OK
2517 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2518 (I found it when inspecting the code).
2519
252020. There is now an overall timeout for performing a callout verification. It
2521 defaults to 4 times the callout timeout, which applies to individual SMTP
2522 commands during the callout. The overall timeout applies when there is more
2523 than one host that can be tried. The timeout is checked before trying the
2524 next host. This prevents very long delays if there are a large number of
2525 hosts and all are timing out (e.g. when the network connections are timing
2526 out). The value of the overall timeout can be changed by specifying an
2527 additional sub-option for "callout", called "maxwait". For example:
2528
2529 verify = sender/callout=5s,maxwait=20s
2530
253121. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2532 to the end before writing, but this should make it even safer).
2533
253422. Exim was forgetting that it had advertised PIPELINING for the second and
2535 subsequent messages on an SMTP connection. It was also not resetting its
2536 memory on STARTTLS and an internal HELO.
2537
253823. When Exim logs an SMTP synchronization error within a session, it now
2539 records whether PIPELINING has been advertised or not.
2540
254124. Added 3 instances of "(long int)" casts to time_t variables that were being
2542 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2543 rather than long int.
2544
254525. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2546
254726. Added the never_mail option to autoreply.
2548
2549
2550Exim version 4.41
2551-----------------
2552
2553 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2554 crash if the getsockname() call failed; this can happen if a connection is
2555 closed very soon after it is established. The problem was simply in the
2556 order in which certain operations were done, causing Exim to try to write
2557 to the SMTP stream before it had set up the file descriptor. The bug has
2558 been fixed by making things happen in the correct order.
2559
2560
2561Exim version 4.40
2562-----------------
2563
2564 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2565 before the connection was closed, thus losing the rejection response.
2566
2567 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2568 some early Solaris releases, but causes trouble in current releases where
2569 socklen_t is defined.
2570
2571 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2572 always exist.
2573
2574 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2575 configured.
2576
2577 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2578 that releasing the top of it at the end releases what was used for sub-
2579 expansions (unless the block got too big). However, discard this block if
2580 the first thing is a variable or header, so that we can use its block when
2581 it is dynamic (useful for very large $message_headers, for example).
2582
2583 6. Lookups now cache *every* query, not just the most recent. A new, separate
2584 store pool is used for this. It can be recovered when all lookup caches are
2585 flushed. Lookups now release memory at the end of their result strings.
2586 This has involved some general refactoring of the lookup sources.
2587
2588 7. Some code has been added to the store_xxx() functions to reduce the amount
2589 of flapping under certain conditions.
2590
2591 8. log_incoming_interface used to affect only the <= reception log lines. Now
2592 it causes the local interface and port to be added to several more SMTP log
2593 lines, for example "SMTP connection from", and rejection lines.
2594
2595 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2596
259710. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2598
259911. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2600 could be overwritten at the end of the current message (or the start of a
2601 new message if it was set in a HELO ACL). The value is now preserved for
2602 the duration of the SMTP connection.
2603
260412. If a transport had a headers_rewrite setting, and a matching header line
2605 contained an unqualified address, that address was qualified, even if it
2606 did not match any rewriting rules. The underlying bug was that the values
2607 of the flags that permit the existence of unqualified sender and recipient
2608 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2609 non-local messages, and by -bnq for local messages) were not being
2610 preserved with the message after it was received.
2611
261213. When Exim was logging an SMTP synchronization error, it could sometimes log
2613 "next input=" as part of the text comprising the host identity instead of
2614 the correct text. The code was using the same buffer for two different
2615 strings. However, depending on which order the printing function evaluated
2616 its arguments, the bug did not always show up. Under Linux, for example, my
2617 test suite worked just fine.
2618
261914. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2620 doesn't work with some older versions of Perl. It has been changed to "my",
2621 which in any case is probably the better facility to use.
2622
262315. A really picky compiler found some instances of statements for creating
2624 error messages that either had too many or two few arguments for the format
2625 string.
2626
262716. The size of the buffer for calls to the DNS resolver has been increased
2628 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2629 for addresses that have a lot of PTR records. This alleviates a problem; it
2630 does not fully solve it.
2631
263217. A dnsdb lookup for PTR records that receives more data than will fit in the
2633 buffer now truncates the list and logs the incident, which is the same
2634 action as happens when Exim is looking up a host name and its aliases.
2635 Previously in this situation something unpredictable would happen;
2636 sometimes it was "internal error: store_reset failed".
2637
263818. If a server dropped the connection unexpectedly when an Exim client was
2639 using GnuTLS and trying to read a response, the client delivery process
2640 crashed while trying to generate an error log message.
2641
264219. If a "warn" verb in an ACL added multiple headers to a message in a single
2643 string, for example:
2644
2645 warn message = H1: something\nH2: something
2646
2647 the text was added as a single header line from Exim's point of view
2648 though it ended up OK in the delivered message. However, searching for the
2649 second and subsequent header lines using $h_h2: did not work. This has been
2650 fixed. Similarly, if a system filter added multiple headers in this way,
2651 the routers could not see them.
2652
265320. Expanded the error message when iplsearch is called with an invalid key to
2654 suggest using net-iplsearch in a host list.
2655
265621. When running tests using -bh, any delays imposed by "delay" modifiers in
2657 ACLs are no longer actually imposed (and a message to that effect is
2658 output).
2659
266022. If a "gecos" field in a passwd entry contained escaped characters, in
2661 particular, if it contained a \" sequence, Exim got it wrong when building
2662 a From: or a Sender: header from that name. A second bug also caused
2663 incorrect handling when an unquoted " was present following a character
2664 that needed quoting.
2665
266623. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2667 was not being matched caselessly.
2668
266924. Arranged for all hyphens in the exim.8 source to be escaped with
2670 backslashes.
2671
267225. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2673 properly. Recipient callout cache records were still being keyed to include
2674 the sender, even when use_sender was set false. This led to far more
2675 callouts that were necessary. The sender is no longer included in the key
2676 when use_sender is false.
2677
267826. Added "control = submission" modifier to ACLs.
2679
268027. Added the ${base62d: operator to decode base 62 numbers.
2681
268228. dnsdb lookups can now access SRV records.
2683
268429. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2685 the configuration file.
2686
268730. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2688 (-v) mode. This makes the output for a verbose queue run more intelligible.
2689
269031. Added a use_postmaster feature to recipient callouts.
2691
269232. Added the $body_zerocount variable, containing the number of binary zero
2693 bytes in the message body.
2694
269533. The time of last modification of the "new" subdirectory is now used as the
2696 "mailbox time last read" when there is a quota error for a maildir
2697 delivery.
2698
269934. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2700
270135. Added +ignore_unknown as a special item in host lists.
2702
270336. Code for decoding IPv6 addresses in host lists is now included, even if
2704 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2705 address was recognized as an IP address, but was then not correctly decoded
2706 into binary, causing unexpected and incorrect effects when compared with
2707 another IP address.
2708
2709
2710Exim version 4.34
2711-----------------
2712
2713 1. Very minor rewording of debugging text in manualroute to say "list of
2714 hosts" instead of "hostlist".
2715
2716 2. If verify=header_syntax was set, and a header line with an unqualified
2717 address (no domain) and a large number of spaces between the end of the
2718 name and the colon was received, the reception process suffered a buffer
2719 overflow, and (when I tested it) crashed. This was caused by some obsolete
2720 code that should have been removed. The fix is to remove it!
2721
2722 3. When running in the test harness, delay a bit after writing a bounce
2723 message to get a bit more predictability in the log output.
2724
2725 4. Added a call to search_tidyup() just before forking a reception process. In
2726 theory, someone could use a lookup in the expansion of smtp_accept_max_
2727 per_host which, without the tidyup, could leave open a database connection.
2728
2729 5. Added the variables $recipient_data and $sender_data which get set from a
2730 lookup success in an ACL "recipients" or "senders" condition, or a router
2731 "senders" option, similar to $domain_data and $local_part_data.
2732
2733 6. Moved the writing of debug_print from before to after the "senders" test
2734 for routers.
2735
2736 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2737 problems for message scanning, either using a data ACL, or using
2738 local_scan() because the Received: header was not generated till after they
2739 were called (in order to set the time as the time of reception completion).
2740 I have revised the way this works. The header is now generated after the
2741 body is received, but before the ACL or local_scan() are called. After they
2742 are run, the timestamp in the header is updated.
2743
2744
2745Exim version 4.33
2746-----------------
2747
2748 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2749 before starting a queue runner without re-exec. This happened only when
2750 deliver_drop_privilege was set or when the Exim user was set to root. The
2751 effect of the bug was that timeouts during subsequent deliveries caused
2752 crashes instead of being properly handled. The handler is now left at its
2753 default (and expected) setting.
2754
2755 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2756 message, again when deliver_drop_privilege is set or Exim is run as root.
2757 The bug described in (1) was not present in this case, but the tidying up
2758 of the other signals was missing. I have made the two cases consistent.
2759
2760 3. The ignore_target_hosts setting on a manualroute router was being ignored
2761 for hosts that were looked up using the /MX notation.
2762
2763 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2764 in domain lists.
2765
2766 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2767 operated on the sender address. After changing the $sender_address to <>
2768 for the sender address verify, Exim was re-instated it as the original
2769 (before rewriting) address, but remembering that it had rewritten it, so it
2770 wasn't rewriting it again. This bug also had the effect of breaking the
2771 sender address verification caching when the sender address was rewritten.
2772
2773 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2774 This has been changed so that if the ip literal address matches
2775 ignore_target_hosts, the router declines.
2776
2777 7. Added expansion conditions match_domain, match_address, and match_local_
2778 part (NOT match_host).
2779
2780 8. The placeholder for the Received: header didn't have a length field set.
2781
2782 9. Added code to Exim itself and to exim_lock to test for a specific race
2783 condition that could lead to file corruption when using MBX delivery. The
2784 issue is with the lockfile that is created in /tmp. If this file is removed
2785 after a process has opened it but before that process has acquired a lock,
2786 there is the potential for a second process to recreate the file and also
2787 acquire a lock. This could lead to two Exim processes writing to the file
2788 at the same time. The added code performs the same test as UW imapd; it
2789 checks after acquiring the lock that its file descriptor still refers to
2790 the same named file.
2791
279210. The buffer for building added header lines was of fixed size, 8192 bytes.
2793 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2794 when Exim is built.
2795
279611. Added the smtp_active_hostname option. If used, this will typically be made
2797 to depend on the incoming interface address. Because $interface_address is
2798 not set up until the daemon has forked a reception process, error responses
2799 that can happen earlier (such as "too many connections") no longer contain
2800 a host name.
2801
280212. If an expansion in a condition on a "warn" statement fails because a lookup
2803 defers, the "warn" statement is abandoned, and the next ACL statement is
2804 processed. Previously this caused the whole ACL to be aborted.
2805
280613. Added the iplsearch lookup type.
2807
280814. Added ident_timeout as a log selector.
2809
281015. Added tls_certificate_verified as a log selector.
2811
281216. Added a global option tls_require_ciphers (compare the smtp transport
2813 option of the same name). This controls incoming TLS connections.
2814
281517. I finally figured out how to make tls_require_ciphers do a similar thing
2816 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2817 before starting the TLS session.
2818
281918. Tabs are now shown as \t in -bP output.
2820
282119. If the log selector return_path_on_delivery was set, Exim crashed when
2822 bouncing a message because it had too many Received: header lines.
2823
282420. If two routers both had headers_remove settings, and the first one included
2825 a superfluous trailing colon, the final name in the first list and the
2826 first name in the second list were incorrectly joined into one item (with a
2827 colon in the middle).
2828
2829
2830Exim version 4.32
2831-----------------
2832
2833 1. Added -C and -D options to the exinext utility, mainly to make it easier
2834 to include in the automated testing, but these could be helpful when
2835 multiple configurations are in use.
2836
2837 2. The exinext utility was not formatting the output nicely when there was
2838 an alternate port involved in the retry record key, nor when there was a
2839 message id as well (for retries that were specific to a specific message
2840 and a specific host). It was also confused by IPv6 addresses, because of
2841 the additional colons they contain. I have fixed the IPv4 problem, and
2842 patched it up to do a reasonable job for IPv6.
2843
2844 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2845 delivery, the log line now contains "pipelined" if PIPELINING was used.
2846
2847 4. An SMTP transport process used to panic and die if the bind() call to set
2848 an explicit outgoing interface failed. This has been changed; it is now
2849 treated in the same way as a connect() failure.
2850
2851 5. A reference to $sender_host_name in the part of a conditional expansion
2852 that was being skipped was still causing a DNS lookup. This no longer
2853 occurs.
2854
2855 6. The def: expansion condition was not recognizing references to header lines
2856 that used bh_ and bheader_.
2857
2858 7. Added the _cache feature to named lists.
2859
2860 8. The code for checking quota_filecount in the appendfile transport was
2861 allowing one more file than it should have been.
2862
2863 9. For compatibility with Sendmail, the command line option
2864
2865 -prval:sval
2866
2867 is equivalent to
2868
2869 -oMr rval -oMs sval
2870
2871 and sets the incoming protocol and host name (for trusted callers). The
2872 host name and its colon can be omitted when only the protocol is to be set.
2873 Note the Exim already has two private options, -pd and -ps, that refer to
2874 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2875 "s", but I don't think that's a major issue.
2876
287710. A number of refactoring changes to the code, none of which should affect
2878 Exim's behaviour:
2879
2880 (a) The number of logging options was getting close to filling up the
2881 32-bit word that was used as a bit map. I have split them into two classes:
2882 those that are passed in the argument to log_write(), and those that are
2883 only ever tested independently outside of that function. These are now in
2884 separate 32-bit words, so there is plenty of room for expansion again.
2885 There is no change in the user interface or the logging behaviour.
2886
2887 (b) When building, for example, log lines, the code previously used a
2888 macro that called string_cat() twice, in order to add two strings. This is
2889 not really sufficiently general. Furthermore, there was one instance where
2890 it was actually wrong because one of the argument was used twice, and in
2891 one call a function was used. (As it happened, calling the function twice
2892 did not affect the overall behaviour.) The macro has been replaced by a
2893 function that can join an arbitrary number of extra strings onto a growing
2894 string.
2895
2896 (c) The code for expansion conditions now uses a table and a binary chop
2897 instead of a serial search (which was left over from when there were very
2898 few conditions). Also, it now recognizes conditions like "pam" even when
2899 the relevant support is not compiled in: a suitably worded error message is
2900 given if an attempt is made to use such a condition.
2901
290211. Added ${time_interval:xxxxx}.
2903
290412. A bug was causing one of the ddress fields not to be passed back correctly
2905 from remote delivery subprocesses. The field in question was not being
2906 subsequently used, so this caused to problems in practice.
2907
290813. Added new log selectors queue_time and deliver_time.
2909
291014. Might have fixed a bug in maildirsizefile handling that threw up
2911 "unexpected character" debug warnings, and recalculated the data
2912 unnecessarily. In any case, I expanded the warning message to give more
2913 information.
2914
291515. Added the message "Restricted characters in address" to the statements in
2916 the default ACL that block characters like @ and % in local parts.
2917
291816. Change 71 for release 4.31 proved to be much less benign that I imagined.
2919 Three changes have been made:
2920
2921 (a) There was a serious bug; a negative response to MAIL caused the whole
2922 recipient domain to be cached as invalid, thereby blocking all messages
2923 to all local parts at the same domain, from all senders. This bug has
2924 been fixed. The domain is no longer cached after a negative response to
2925 MAIL if the sender used is not empty.
2926
2927 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2928 been restored.
2929
2930 (c) A new callout option, "use_sender" has been added for people who want
2931 the modified behaviour.
2932
2933
2934Exim version 4.31
2935-----------------
2936
2937 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2938 Larry Rosenman.
2939
2940 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2941 indeed breaks things for older releases.
2942
2943 3. Added additional logging to the case where there is a problem reading data
2944 from a filter that is running in a subprocess using a pipe, in order to
2945 try to track down a specific problem.
2946
2947 4. Testing facility fudge: when running in the test harness and attempting
2948 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2949 getting "No route to host". Convert this to a timeout.
2950
2951 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2952 warning.
2953
2954 6. Some OS don't have socklen_t but use size_t instead. This affects the
2955 fifth argument of getsockopt() amongst other things. This is now
2956 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2957 can be set for individual OS. I have set it for SunOS5, OSF1, and
2958 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2959 some earlier ones do not.
2960
2961 7. Change 4.30/15 was not doing the test caselessly.
2962
2963 8. The standard form for an IPv6 address literal was being rejected by address
2964 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2965 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2966 this, as well as the form without the "IPv6" on the front (but only when
2967 address literals are enabled, of course).
2968
2969 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2970
297110. Exim crashed if a message with an empty sender address specified by -f
2972 encountered a router with an errors_to setting. This could be provoked only
2973 by a command such as
2974
2975 exim -f "" ...
2976
2977 where an empty string was supplied; "<>" did not hit this bug.
2978
297911. Installed PCRE release 4.5.
2980
298112. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2982 remained set. It is now erased.
2983
298413. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2985 times from message ids (which are base 36 rather than the normal 62).
2986
298714. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2988 were being counted as actual protocol errors, and logged if the log
2989 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2990 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2991 and DATA following a set of rejected RCPTs do not count as protocol errors.
2992 In other words, Exim assumes they were pipelined, though this may not
2993 actually be the case. Of course, in all cases the client gets an
2994 appropriate error code.
2995
299615. If a lookup fails in an ACL condition, a message about the failure may
2997 be available; it is used if testing the ACL cannot continue, because most
2998 such messages specify what the cause of the deferral is. However, some
2999 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3000 that caused an old message to be retained and used if a later statement
3001 caused a defer, replacing the real cause of the deferral.
3002
300316. If an IP address had so many PTR records that the DNS lookup buffer
3004 was not large enough to hold them, Exim could crash while trying to process
3005 the truncated data. It now detects and logs this case.
3006
300717. Further to 4.21/58, another change has been made: if (and only if) the
3008 first line of a message (the first header line) ends with CRLF, a bare LF
3009 in a subsequent header line has a space inserted after it, so as not to
3010 terminate the header.
3011
301218. Refactoring: tidied an ugly bit of code in appendfile that copied data
3013 unnecessarily, used atoi() instead of strtol(), and didn't check the
3014 termination when getting file sizes from file names by regex.
3015
301619. Completely re-implemented the support for maildirsize files, in the light
3017 of a number of problems with the previous contributed implementation
3018 (4.30/29). In particular:
3019
3020 . If the quota is zero, the maildirsize file is maintained, but no quota is
3021 imposed.
3022
3023 . If the maildir directory does not exist, it is created before any attempt
3024 to write a maildirsize file.
3025
3026 . The quota value in the file is just a cache; if the quota is changed in
3027 the transport, the new value overrides.
3028
3029 . A regular expression is available for excluding directories from the
3030 count.
3031
303220. The autoreply transport checks the characters in options that define the
3033 message's headers; it allows continued headers, but it was checking with
3034 isspace() after an embedded newline instead of explicitly looking for a
3035 space or a tab.
3036
303721. If all the "regular" hosts to which an address was routed had passed their
3038 expiry times, and had not reached their retry times, the address was
3039 bounced, even if fallback hosts were defined. Now Exim should go on to try
3040 the fallback hosts.
3041
304222. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3043 equivalent code in the SMTP transport. Some hosts send humungous responses
3044 to HELO/EHLO, more than 1024 it seems.
3045
304623. Refactoring: code in filter.c used (void *) for "any old type" but this
3047 gives compiler warnings in some environments. I've now done it "properly",
3048 using a union.
3049
305024. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3051 (because of problems with the built-in one) was declared to return uschar *
3052 instead of char *, causing compiler failure.
3053
305425. Fixed a file descriptor leak when processing alias/forward files.
3055
305626. Fixed a minor format string issue in dbfn.c.
3057
305827. Typo in exim.c: ("dmbnz" for "dbmnz").
3059
306028. If a filter file refered to $h_xxx or $message_headers, and the headers
3061 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3062 become corrupted.
3063
306429. When a sender address is verified, it is cached, to save repeating the test
3065 when there is more than one recipient in a message. However, when the
3066 verification involves a callout, it is possible for different callout
3067 options to be set for different recipients. It is too complicated to keep
3068 track of this in the cache, so now Exim always runs a verification when a
3069 callout is required, relying on the callout cache for the optimization.
3070 The overhead is duplication of the address routing, but this should not be
3071 too great.
3072
307330. Fixed a bug in callout caching. If a RCPT command caused the sender address
3074 to be verified with callout=postmaster, and the main callout worked but the
3075 postmaster check failed, the verification correctly failed. However, if a
3076 subsequent RCPT command asked for sender verification *without* the
3077 postmaster check, incorrect caching caused this verification also to fail,
3078 incorrectly.
3079
308031. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3081 it was not caching the DNS options (qualify_single, search_parents) that
3082 were used when the lookup failed. A subsequent lookup with different
3083 options therefore always gave the same answer, though there were cases
3084 where it should not have. (Example: a "domains = !$mx_any" option on a
3085 dnslookup router: the "domains" option is always processed without any
3086 widening, but the router might have qualify_single set.) Now Exim uses the
3087 cached value only when the same options are set.
3088
308932. Added John Jetmore's "exipick" utility to the distribution.
3090
309133. GnuTLS: When an attempt to start a TLS session fails for any reason other
3092 than a timeout (e.g. a certificate is required, and is not provided), an
3093 Exim server now closes the connection immediately. Previously it waited for
3094 the client to close - but if the client is SSL, it seems that they each
3095 wait for each other, leading to a delay before one of them times out.
3096
309734: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3098 maintained 0.8.x compatibility because I don't think many are using it, and
3099 it is clearly obsolete.
3100
310135. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3102 transport.
3103
310436. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3105 client certificate was expired. A simple patch fixes this, though I don't
3106 understand the full logic of why the verify callback is called multiple
3107 times.
3108
310937. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3110 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3111 which causes problems with some clients (such as the Certicom SSL Plus
3112 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3113 disables the coutermeasure allowing Eudora to connect."
3114
311538. Exim was not checking that a write() to a log file succeeded. This could
3116 lead to Bad Things if a log got too big, in particular if it hit a file
3117 size limit. Exim now panics and dies if it cannot write to a log file, just
3118 as it does if it cannot open a log file.
3119
312039. Modified OS/Makefile-Linux so that it now contains
3121
3122 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3123
3124 The two -D definitions ensure that Exim is compiled with large file
3125 support, which makes it possible to handle log files that are bigger than
3126 2^31.
3127
312840. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3129 instance) a domain was checked against a named list that involved a lookup,
3130 causing $domain_data to be set, then another domain was checked against the
3131 same list, then the first domain was re-checked, the value of $domain_data
3132 after the final check could be wrong. In particular, if the second check
3133 failed, it could be set empty. This bug probably also applied to
3134 $localpart_data.
3135
313641. The strip_trailing_dot option was not being applied to the address given
3137 with the -f command-line option.
3138
313942. The code for reading a message's header from the spool was incrementing
3140 $received_count, but never initializing it. This meant that the value was
3141 incorrect (doubled) while delivering a message in the same process in which
3142 it was received. In the most common configuration of Exim, this never
3143 happens - a fresh exec is done - but it can happen when
3144 deliver_drop_privilege is set.
3145
314643. When Exim logs an SMTP synchronization error - client data sent too soon -
3147 it now includes up to 150 characters of the unexpected data in the log
3148 line.
3149
315044. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3151 and building data strings. The size of both of these buffers was 10 000
3152 bytes - far larger than anybody would *ever* want, thought I. Needless to
3153 say, somebody hit the limit. I have increased the maximum line length to
3154 20 000 and the maximum data length of concatenated lines to 100 000. I have
3155 also fixed two bugs, because there was no checking on these buffers. Tsk,
3156 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3157 buffer is too small.
3158
315945. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3160 lsearch lookups. Now it does.
3161
316246. When parsing a route_list item in a manualroute router, a fixed-length
3163 buffer was used for the list of hosts. I made this 1024 bytes long,
3164 thinking that nobody would ever have a list of hosts that long. Wrong.
3165 Somebody had a whole pile of complicated expansion conditions, and the
3166 string was silently truncated, leading to an expansion error. It turns out
3167 that it is easier to change to an unlimited length (owing to other changes
3168 that have happened since this code was originally written) than to build
3169 structure for giving a limitation error. The length of the item that
3170 expands into the list of hosts is now unlimited.
3171
317247. The lsearch lookup could not handle data where the length of text line was
3173 more than 4095 characters. Such lines were truncated, leading to shortened
3174 data being returned. It should now handle lines of any length.
3175
317648. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3177 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3178 ACL").
3179
318049. Cosmetic tidy to scripts like exicyclog that are generated by globally
3181 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3182 no longer happens in comment lines. A list of replacements is now placed
3183 at the head of all of the source files, except those whose only change is
3184 to replace PERL_COMMAND in the very first #! line.
3185
318650. Replaced the slow insertion sort in queue.c, for sorting the list of
3187 messages on the queue, with a bottom-up merge sort, using code contributed
3188 by Michael Haardt. This should make operations like -bp somewhat faster on
3189 large queues. It won't affect queue runners, except when queue_run_in_order
3190 is set.
3191
319251. Installed eximstats 1.31 in the distribution.
3193
319452. Added support for SRV lookups to the dnslookup router.
3195
319653. If an ACL referred to $message_body or $message_body_end, the value was not
3197 reset for any messages that followed in the same SMTP session.
3198
319954. The store-handling optimization for building very long strings was not
3200 differentiating between the different store pools. I don't think this
3201 actually made any difference in practice, but I've tidied it.
3202
320355. While running the routers to verify a sender address, $sender_address
3204 was still set to the sender address. This is wrong, because when routing to
3205 send a bounce to the sender, it would be empty. Therefore, I have changed
3206 it so that, while verifying a sender address, $sender_address is set to <>.
3207 (There is no change to what happens when verifying a recipient address.)
3208
320956. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3210 target A or AAAA records (if not already returned) without resetting the
3211 qualify_single or search_parents options of the DNS resolver. These are
3212 inappropriate in this case because the targets of MX and SRV records must
3213 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3214 target that, when qualified, matched something in the local domain. These
3215 two options are now turned off when doing these lookups.
3216
321757. It seems that at least some releases of Reiserfs (which does not have the
3218 concept of a fixed number of inodes) returns zero and not -1 for the
3219 number of available inodes. This interacted badly with check_spool_inodes,
3220 which assumed that -1 was the "no such thing" setting. What I have done is
3221 to check that the total number of inodes is greater than zero before doing
3222 the test of how many are available.
3223
322458. When a "warn" ACL statement has a log_message modifier, the message is
3225 remembered, and not repeated. This is to avoid a lot of repetition when a
3226 message has many recipients that cause the same warning to be written.
3227 Howewer, Exim was preserving the list of already written lines for an
3228 entire SMTP session, which doesn't seem right. The memory is now reset if a
3229 new message is started.
3230
323159. The "rewrite" debugging flag was not showing the result of rewriting in the
3232 debugging output unless log_rewrite was also set.
3233
323460. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3235 of (int)(handle) when we know that handle contains (void *)(-1).
3236
323761. The Exim daemon panic-logs an error return when it closes the incoming
3238 connection. However "connection reset by peer" seems to be common, and
3239 isn't really an error worthy of noting specially, so that particular error
3240 is no long logged.
3241
324262. When Exim is trying to find all the local interfaces, it used to panic and
3243 die if the ioctl to get the interface flags failed. However, it seems that
3244 on at least one OS (Solaris 9) it is possible to have an interface that is
3245 included in the list of interfaces, but for which you get a failure error
3246 for this call. This happens when the interface is not "plumbed" into a
3247 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3248 failure of the "get flags" call assumes that the interface is down.
3249
325063. Added a ${eval10: operator, which assumes all numbers are decimal. This
3251 makes life easier for people who are doing arithmetic on fields extracted
3252 from dates, where you often get leading zeros that should not be
3253 interpreted as octal.
3254
325564. Added qualify_domain to the redirect router, to override the global
3256 setting.
3257
325865. If a pathologically long header line contained very many addresses (the
3259 report of this problem mentioned 10 000) and each of them was rewritten,
3260 Exim could use up a very large amount of memory. (It kept on making new
3261 copies of the header line as it rewrote, and never released the old ones.)
3262 At the expense of a bit more processing, the header rewriting function has
3263 been changed so that it no longer eats memory in this way.
3264
326566. The generation of the Received: header has been moved from the time that a
3266 message starts to be received, to the time that it finishes. The timestamp
3267 in the Received: header should now be very close to that of the <= log
3268 line. There are two side-effects of this change:
3269
3270 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3271 logged header lines no longer include the local Received: line, because
3272 it has not yet been created. The same applies to a copy of the message
3273 that is returned to a non-SMTP sender when a message is rejected.
3274
3275 (b) When a filter file is tested using -bf, no additional Received: header
3276 is added to the test message. After some thought, I decided that this
3277 is a bug fix.
3278
3279 This change does not affect the value of $received_for. It is still set
3280 after address rewriting, but before local_scan() is called.
3281
328267. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3283
328468. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3285 gave an unhelpful panic error message, and a defer error. I have managed to
3286 change this behaviour so that it now rejects any supplied certificate,
3287 which seems right, as the list of acceptable certificates is empty.
3288
328969. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3290 gave an unhelpful defer error. I have not managed to make this reject any
3291 supplied certificates, but the error message it gives is "no certificate
3292 supplied", which is not helpful.
3293
329470. exigrep's output now also includes lines that are not associated with any
3295 message, but which match the given pattern. Implemented by a patch from
3296 Martin Sluka, which also tidied up the Perl a bit.
3297
329871. Recipient callout verification, like sender verification, was using <> in
3299 the MAIL FROM command. This isn't really the right thing, since the actual
3300 sender may affect whether the remote host accepts the recipient or not. I
3301 have changed it to use the actual sender in the callout; this means that
3302 the cache record is now keyed on a recipient/sender pair, not just the
3303 recipient address. There doesn't seem to be a real danger of callout loops,
3304 since a callout by the remote host to check the sender would use <>.
3305 [SEE ABOVE: changed after hitting problems.]
3306
330772. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3308 temporary errors. However, in the case of such a code being given after
3309 the end of a data transmission (i.e. after ".") Exim was failing to write
3310 a retry record for the message. (Yes, there was some broken host that was
3311 actually sending 8xx at this point.)
3312
331373. An unknown lookup type in a host list could cause Exim to panic-die when
3314 the list was checked. (An example that provoked this was putting <; in the
3315 middle of a list instead of at the start.) If this happened during a DATA
3316 ACL check, a -D file could be left lying around. This kind of configuration
3317 error no longer causes Exim to die; instead it causes a defer errror. The
3318 incident is still logged to the main and panic logs.
3319
332074. Buglet left over from Exim 3 conversion. The message "too many messages
3321 in one connection" was written to the rejectlog but not the mainlog, except
3322 when address rewriting (yes!) was being logged.
3323
332475. Added write_rejectlog option.
3325
332676. When a system filter was run not as root (that is, when system_filter_user
3327 was set), the values of the $n variables were not being returned to the
3328 main process; thus, they were not subsequently available in the $sn
3329 variables.
3330
333177. Added +return_path_on_delivery log selector.
3332
333378. A connection timeout was being treated differently from recipients deferred
3334 when testing hosts_max_try with a message that was older than the host's
3335 retry timeout. (The host should not be counted, thus allowing all hosts to
3336 be tried at least once before bouncing.) This may have been the cause of an
3337 occasionally reported bug whereby a message would remain on the queue
3338 longer than the retry timeout, but would be bounced if a delivery was
3339 forced. I say "may" because I never totally pinned down the problem;
3340 setting up timeout/retry tests is difficult. See also the next item.
3341
334279. The ultimate address timeout was not being applied to errors that involved
3343 a combination of host plus message (for example, a timeout on a MAIL
3344 command). When an address resolved to a number of possible hosts, and they
3345 were not all tried for each delivery (e.g. because of hosts_max_try), a
3346 message could remain on the queue longer than the retry timeout.
3347
334880. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3349 Haardt.
3350
335181. Fixed an obscure SMTP outgoing bug which required at least the following
3352 conditions: (a) there was another message waiting for the same server;
3353 (b) the server returned 5xx to all RCPT commands in the first message so
3354 that the message was not completed; (c) the server dropped the connection
3355 or gave a negative response to the RSET that Exim sends to abort the
3356 transaction. The observed case was a dropped connection after DATA that had
3357 been sent in pipelining mode. That is, the server had advertised PIPELINING
3358 but was not implementing it correctly. The effect of the bug was incorrect
3359 behaviour, such as trying another host, and this could lead to a crash.
3360
3361
3362Exim version 4.30
3363-----------------
3364
3365 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3366 and daemon.c were passed as pointers to ints; they should have been
3367 pointers to socklen_t variables (which are typically unsigned ints).
3368
3369 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3370 fixed.
3371
3372 3. Fixed a really odd bug that affected only the testing scheme; patching a
3373 certain fixed string in the binary changed the value of another string that
3374 happened to be identical to the end of the original first string.
3375
3376 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3377 name", it returns that address as the IP address. On some operating
3378 systems (e.g. Solaris), it also passes back the IP address string as the
3379 "host name". However, on others (e.g. Linux), it passes back an empty
3380 string. Exim wasn't checking for this, and was changing the host name to an
3381 empty string, assuming it had been canonicized.
3382
3383 5. Although rare, it is permitted to have more than one PTR record for a given
3384 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3385 all the names associated with an address, because they do in Solaris.
3386 However, it seems that they do not in Linux for data that comes from the
3387 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3388 I found this out when I moved to a new Linux workstation and tried to run
3389 the Exim test suite.
3390
3391 To get round this problem I have changed the code so that it now does its
3392 own call to the DNS to look up PTR records when searching for a host name.
3393 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3394 addresses that are only in /etc/hosts are still found.
3395
3396 This behaviour is, however, controlled by an option called host_lookup_
3397 order, which defaults to "bydns:byaddr". If people want to use the other
3398 order, or indeed, just use one or the other means of lookup, they can
3399 specify it in this variable.
3400
3401 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3402 some operating systems, this comes back from gethostbyaddr() as an empty
3403 string, and this is what Exim used to test for. However, it seems that in
3404 other systems, "." is yielded. Exim now tests for this case too.
3405
3406 7. The values of check_spool_space and check_log_space are now held internally
3407 as a number of kilobytes instead of an absolute number of bytes. If a
3408 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3409 kilobyte. This means that much larger values can be stored.
3410
3411 8. Exim monitor: an attempt to get the action menu when not actually pointing
3412 at a message produces an empty menu entitled "No message selected". This
3413 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3414 no entries in it ("Shell widget menu has zero width and/or height"). So I
3415 have added a single, blank menu entry in this case.
3416
3417 9. Added ${quote_local_part.
3418
341910. MIME decoding is now applied to the contents of Subject: header lines when
3420 they are logged.
3421
342211. Now that a reference to $sender_host_address automatically causes a reverse
3423 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3424 host lookup before query-style lookups in lists that might use this
3425 variable. This has therefore been abolished, and the "net-" prefix is no
3426 longer necessary for query-style lookups.
3427
342812. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3429 have been a typo for LFLAGS, so it has been changed.
3430
343113. The install script calls Exim with "-C /dev/null" in order to find the
3432 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3433 to be output. Howeve, since Exim outputs its version number before the
3434 error, it didn't break the script. It just looked ugly. I fixed this by
3435 always allowing "-C /dev/null" if the caller is root.
3436
343714. Ignore overlarge ACL variable number when reading spool file - insurance
3438 against a later release with more variables having written the file.
3439
344015. The standard form for an IPv6 address literal was being rejected by EHLO.
3441 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3442 this, as well as the form without the "IPv6" on the front.
3443
344416. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3445 OS/Makefile-Darwin file.
3446
344717. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3448 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3449
345018. After change 4.21/52, "%ld" was used to format the contents of the $inode
3451 variable. However, some OS use ints for inodes. I've added cast to long int
3452 to get rid of the compiler warning.
3453
345419. I had forgotten to lock out "/../" in configuration file names when
3455 ALT_CONFIG_PREFIX was set.
3456
345720. Routers used for verification do not need to specify transports. However,
3458 if such a router generated a host list, and callout was configured, Exim
3459 crashed, because it could not find a port number from the (non-existent)
3460 transport. It now assumes port 25 in this circumstance.
3461
346221. Added the -t option to exigrep.
3463
346422. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3465 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3466 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3467 them is set, LOOKUP_LSEARCH is forced.
3468
346923. "exim -bV" now outputs a list of lookups that are included in the binary.
3470
347124. Added sender and host information to the "rejected by local_scan()" log
3472 line; previously there was no indication of these.
3473
347425. Added .include_if_exists.
3475
347626. Change 3.952/11 added an explicit directory sync on top of a file sync for
3477 Linux. It turns out that not all file systems support this. Apparently some
3478 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3479 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3480 not supported on the file descriptor, is now ignored when Exim is trying to
3481 sync a directory. This applies only to Linux.
3482
348327. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3484
348528. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3486 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3487 this.
3488
348929. Added support for maildirsize files from supplied patch (modified a bit).
3490
349130. The use of :fail: followed by an empty string could lead Exim to respond to
3492 sender verification failures with (e.g.):
3493
3494 550 Verification failed for <xxx>
3495 550 Sender verify failed
3496
3497 where the first response line was missing the '-' that indicates it is not
3498 the final line of the response.
3499
350031. The loop for finding the name of the user that called Exim had a hardwired
3501 limit of 10; it now uses the value of finduser_retries, which is used for
3502 all other user lookups.
3503
350432. Added $received_count variable, available in data and not_smtp ACLs, and at
3505 delivery time.
3506
350733. Exim was neglecting to zero errno before one call of strtol() when
3508 expanding a string and expecting an integer value. On some systems this
3509 resulted in spurious "integer overflow" errors. Also, it was casting the
3510 result into an int without checking.
3511
351234. Testing for a connection timeout using "timeout_connect" in the retry rules
3513 did not work. The code looks as if it has *never* worked, though it appears
3514 to have been documented since at least releast 1.62. I have made it work.
3515
351635. The "timeout_DNS" error in retry rules, also documented since at least
3517 1.62, also never worked. As it isn't clear exactly what this means, and
3518 clearly it isn't a major issue, I have abolished the feature by treating it
3519 as "timeout", and writing a warning to the main and panic logs.
3520
352136. The display of retry rules for -brt wasn't always showing the error code
3522 correctly.
3523
352437. Added new error conditions to retry rules: timeout_A, timeout_MX,
3525 timeout_connect_A, timeout_connect_MX.
3526
352738. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3528 to the empty sender.
3529
353039. The daemon was not analysing the content of -oX till after it had closed
3531 stderr and disconnected from the controlling terminal. This meant that any
3532 syntax errors were only noted on the panic log, and the return code from
3533 the command was 0. By re-arranging the code a little, I've made the
3534 decoding happen first, so such errors now appear on stderr, and the return
3535 code is 1. However, the actual setting up of the sockets still happens in
3536 the disconnected process, so errors there are still only recorded on the
3537 panic log.
3538
353940. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3540 connections (as happens on some IP stacks) was logged at start up time as
3541 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3542 it from "IPv6 and IPv4", which means that two separate sockets are being
3543 used.
3544
354541. The debug output for gethostbyname2() or getipnodebyname() failures now
3546 says whether AF_INET or AF_INET6 was passed as an argument.
3547
354842. Exiwhat output was messed up when time zones were included in log
3549 timestamps.
3550
355143. Exiwhat now gives more information about the daemon's listening ports,
3552 and whether -tls-on-connect was used.
3553
355444. The "port" option of the smtp transport is now expanded.
3555
355645. A "message" modifier in a "warn" statement in a non-message ACL was being
3557 silently ignored. Now an error message is written to the main and panic
3558 logs.
3559
356046. There's a new ACL modifier called "logwrite" which writes to a log file
3561 as soon as it is encountered.
3562
356347. Added $local_user_uid and $local_user_gid at routing time.
3564
356548. Exim crashed when trying to verify a sender address that was being
3566 rewritten to "<>".
3567
356849. Exim was recognizing only a space character after ".include". It now also
3569 recognizes a tab character.
3570
357150. Fixed several bugs in the Perl script that creates the exim.8 man page by
3572 extracting the relevant information from the specification. The man page no
3573 longer contains scrambled data for the -d option, and I've added a section
3574 at the front about calling Exim under different names.
3575
357651. Added "extra_headers" argument to the "mail" command in filter files.
3577
357852. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3579 crash.
3580
358153. Installed eximstats 1.29.
3582
358354. Added transport_filter_timeout as a generic transport option.
3584
358555. Exim no longer adds an empty Bcc: header to messages that have no To: or
3586 Cc: header lines. This was required by RFC 822, but it not required by RFC
3587 2822.
3588
358956. Exim used to add From:, Date:, and Message-Id: header lines to any
3590 incoming messages that did not have them. Now it does so only if the
3591 message originates locally, that is, if there is no associated remote host
3592 address. When Resent- header lines are present, this applies to the Resent-
3593 lines rather than the non-Resent- lines.
3594
359557. Drop incoming SMTP connection after too many syntax or protocol errors. The
3596 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3597
359858. Messages for configuration errors now include the name of the main
3599 configuration file - useful now that there may be more than one file in a
3600 list (.included file names were always shown).
3601
360259. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3603 for those rare installations that do not start the daemon as root or run it
3604 setuid root. I've cut out the call to initgroups() if the daemon is not
3605 root at that time.
3606
360760. The Exim user and group can now be bound into the binary as text strings
3608 that are looked up at the start of Exim's processing.
3609
361061. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3611
361262. Added $mailstore_basename variable.
3613
361463. Installed patch to sieve.c from Michael Haardt.
3615
361664. When Exim failed to open the panic log after failing to open the main log,
3617 the original message it was trying to log was written to stderr and debug
3618 output, but if they were not available (the usual case in production), it
3619 was lost. Now it is written to syslog before the two lines that record the
3620 failures to open the logs.
3621