Install the latest Makefile from the Cygwin maintainer.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
ddfcd446 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.391 2006/09/18 11:06:20 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
PH
26PH/02 Tidied a number of unused variable and signed/unsigned warnings that
27 gcc 4.1.1 threw up.
28
29PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
30 manifest itself as EPIPE rather than ECONNECT. When tidying away a
31 session, the daemon ignores ECONNECT errors and logs others; it now
32 ignores EPIPE as well.
33
d203e649
PH
34PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
35 (quoted-printable decoding).
36
f951fd57
PH
37PH/05 Applied Nico Efrurth's refactoring patch to tidy up spool_mbox.c.
38
ddfcd446
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39PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
40
944e9e9c 41
478be7b0
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42Exim version 4.63
43-----------------
44
45SC/01 Use a glob alias rather than an array ref in eximstats generated
46 parser. This improves both readability and performance.
47
48SC/02 Collect SpamAssassin and rejection statistics in eximstats.
49 Don't display local sender or destination tables in eximstats unless
50 there is data to show.
51 Added average volumes into the eximstats top table text output.
52
53SC/03 Collect data on the number of addresses (recipients) as well
54 as the number of messages in eximstats.
55
2b965a65
TF
56TF/01 Correct an error in the documentation for the redirect router. Exim
57 does (usually) call initgroups() when daemonizing.
478be7b0 58
45b91596
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59TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
60 with consistent privilege compared to when running as a daemon.
478be7b0 61
c59f5781
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62TF/03 Note in the spec that $authenticated_id is not set for local
63 submissions from trusted users.
64
90fc3069
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65TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
66 Thanks to Dean Brooks <dean@iglou.com> for the patch.
67
6083aca0
TF
68TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
69 by adding some example configuration directives to the default
70 configuration file. A little bit of work is required to uncomment the
71 directives and define how usernames and passwords are checked, but
72 there is now a framework to start from.
73
765b530f
PH
74PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
75 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
76 without this. I don't know how relevant this is to other LDAP libraries.
77
4e167a8c
PH
78PH/02 Add the verb name to the "unknown ACL verb" error.
79
4608d683
PH
80PH/03 Magnus Holmgren's patch for filter_prepend_home.
81
b8dc3e4a
PH
82PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
83
5418e93b
PH
84PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
85 directory not expanded when it should be if an expanded home directory
86 was set for the address (which is overridden by the transport).
87
b4a9bda2
PH
88PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
89 libradius.
90
45b91596
PH
91PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
92 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
93 because it is too late at that time, and has no effect.
94
5547e2c5
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95PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
96 security issue with \' (bugzilla #107). I could not use the
97 PQescapeStringConn() function, because it needs a PGconn value as one of
98 its arguments.
99
dbcef0ea
PH
100PH/08 When testing addresses using -bt, indicate those final addresses that
101 are duplicates that would not cause an additional delivery. At least one
102 person was confused, thinking that -bt output corresponded to deliveries.
103 (Suppressing duplicates isn't a good idea as you lose the information
104 about possibly different redirections that led to the duplicates.)
105
25257489
PH
106PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
107 systems where poll() doesn't work, in particular OS X.
108
c816d124
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109PH/10 Added more information to debugging output for retry time not reached.
110
a9ccd69a
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111PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
112 operations in malware.c.
113
75fa1910
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114PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
115 signatures.
116
a7d7aa58
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117PH/13 If write_rejectlog was set false when logging was sent to syslog with
118 syslog_duplication set false, log lines that would normally be written
119 both the the main log and to the reject log were not written to syslog at
120 all.
121
42119b09
PH
122PH/14 In the default configuration, change the use of "message" in ACL warn
123 statements to "add_header".
124
41609df5
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125PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
126 not followed by a command (e.g. "seen endif").
127
a5bd321b
PH
128PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
129 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
130 latter.
131
e85a7ad5 132PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
133 so that it is now:
134
e85a7ad5
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135 ${if or { \
136 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
137 { match{$h_precedence:}{(?i)bulk|list|junk} } \
138 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
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139 }{no}{yes}}
140
e85a7ad5
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141 The Auto-Submitted: and various List- headers are standardised, whereas I
142 don't think Precedence: ever was.
5dff5817 143
d8fe1c03
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144PH/18 Refactored debugging code in route_finduser() to show more information,
145 in particular, the error code if getpwnam() issues one.
146
16282d2b
PH
147PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
148 This is apparently needed in addition to the PH/07 change above to avoid
149 any possible encoding problems.
150
35d40a98
PH
151PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
152 but not after initializing Perl.
153
034d99ab
PH
154PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
155 output them only if debugging. By default they are written stderr,
156 apparently, which is not desirable.
157
6ec97b1b
PH
158PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
159 queries.
160
e22ca4ac
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161JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
162 --not options
163
164JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
165
33d73e3b
PH
166PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
167 authenticated or an ident call has been made. Suppress the default
168 values for $authenticated_id and $authenticated_sender (but permit -oMai
169 and -oMas) when testing with -bh.
170
9ecb03f3
PH
171PH/24 Re-jigged the order of the tests in the default configuration so that the
172 tests for valid domains and recipients precede the DNS black list and CSA
173 tests, on the grounds that those ones are more expensive.
174
084efe8d
PH
175PH/25 Exim was not testing for a space following SMTP commands such as EHLO
176 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
177 This bug exists in every version of Exim that I still have, right back to
178 0.12.
179
366fc9f0
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180PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
181 However, an attempt to turn on case-sensitivity in a regex key by
182 including (?-i) didn't work because the subject string was already
183 lowercased, and the effects were non-intuitive. It turns out that a
184 one-line patch can be used to allow (?-i) to work as expected.
185
c59f5781 186
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187Exim version 4.62
188-----------------
189
190TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
191 other effects) broke the use of negated acl sub-conditions.
192
1cce3af8
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193PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
194 patch).
195
afb3eaaf
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196PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
197 "Deny" causes Exim to reject the incoming connection with a 554 error.
198 Unfortunately, if there is a major crisis, such as a disk failure,
199 tcp-wrappers gives "deny", whereas what one would like would be some
200 kind of temporary error. A kludge has been added to help with this.
201 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
202 554 error is used if errno is still zero or contains ENOENT (which occurs
203 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
204 451 error is used.
205
e173618b
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206PH/03 Add -lutil to the default FreeBSD LIBS setting.
207
dd16e114
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208PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
209 errors. Otherwise a message that provokes a temporary error (when other
210 messages do not) can cause a whole host to time out.
211
f7fd3850
PH
212PH/05 Batch deliveries by appendfile and pipe transports did not work when the
213 addresses were routed directly to files or pipes from a redirect router.
214 File deliveries just didn't batch; pipe deliveries might have suffered
215 odd errors.
216
d87df92c
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217PH/06 A failure to get a lock for a hints database would erroneously always say
218 "Failed to get write lock", even when it was really a read lock.
219
7e9f683d
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220PH/07 The appendfile transport was creating MBX lock files with a fixed mode
221 of 0600. This has been changed to use the value of the lockfile_mode
222 option (which defaults to 0600).
223
bfad5236
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224PH/08 Applied small patch from the Sieve maintainer.
225
01c490df
PH
226PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
227 folder from quota calculations, a direct delivery into this folder messed
228 up the contents of the maildirsize file. This was because the regex was
229 used only to exclude .Trash (or whatever) when the size of the mailbox
230 was calculated. There was no check that a delivery was happening into an
231 excluded directory. This bug has been fixed by ignoring all quota
232 processing for deliveries into excluded directories.
233
d6629cdc
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234PH/10 Added the maildirfolder_create_regex option to appendfile.
235
1cce3af8 236
214e2000
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237Exim version 4.61
238-----------------
239
240PH/01 The code for finding all the local interface addresses on a FreeBSD
241 system running IPv6 was broken. This may well have applied to all BSD
242 systems, as well as to others that have similar system calls. The broken
243 code found IPv4 interfaces correctly, but gave incorrect values for the
244 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
245 that it would not match correctly against @[] and not recognize the IPv6
246 addresses as local.
247
f9daeae0
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248PH/02 The ipliteral router was not recognizing addresses of the form user@
249 [ipv6:....] because it didn't know about the "ipv6:" prefix.
250
7e66e54d
PH
251PH/03 Added disable_ipv6.
252
c8ea1597
PH
253PH/04 Changed $reply_address to use the raw form of the headers instead of the
254 decoded form, because it is most often used to construct To: headers
255 lines in autoreplies, and the decoded form may well be syntactically
256 invalid. However, $reply_address has leading white space removed, and all
257 newlines turned into spaces so that the autoreply transport does not
258 grumble.
259
911f6fde
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260PH/05 If group was specified without a user on a router, and no group or user
261 was specified on a transport, the group from the router was ignored.
262
47ca6d6c
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263PH/06 Increased the number of ACL variables to 20 of each type, and arranged
264 for visible compile-time settings that can be used to change these
265 numbers, for those that want even more. Backwards compatibility with old
266 spool files has been maintained. However, going back to a previous Exim
267 release will lost any variables that are in spool files.
268
ed0e9820
PH
269PH/07 Two small changes when running in the test harness: increase delay when
270 passing a TCP/IP connection to a new process, in case the original
271 process has to generate a bounce, and remove special handling of
272 127.0.0.2 (sic), which is no longer necessary.
273
eff37e47
PH
274PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
275 be the same on different OS.
276
1921d2ea
PH
277PH/09 Moved a debug statement in filter processing to avoid a race problem when
278 testing.
279
b3f69ca8
JJ
280JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
281 whether --show-vars was specified or not
282
283JJ/02 exipick: Added support for new ACL variable spool format introduced
284 in 4.61-PH/06
285
424a1c63
PH
286PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
287 syntactically invalid From: or Reply-to: line, and a filter used this to
288 generate an autoreply, and therefore failed to obtain an address for the
289 autoreply, Exim could try to deliver to a non-existent relative file
290 name, causing unrelated and misleading errors. What now happens is that
291 it logs this as a hard delivery error, but does not attempt to create a
292 bounce message.
293
7a100415
PH
294PH/11 The exinext utility has a -C option for testing purposes, but although
295 the given file was scanned by exinext itself; it wasn't being passed on
296 when Exim was called.
297
19b9dc85
PH
298PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
299 an end-of-file indication when reading a command response.
300
309bd837
PH
301PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
302 compiled. In many other places in Exim, IPv6 addresses are always
303 recognized, so I have changed this. It also means that IPv4 domain
304 literals of the form [IPV4:n.n.n.n] are now always recognized.
305
59e82a2a
PH
306PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
307 used if the router is not running as root, for example, when verifying at
308 ACL time, or when using -bh. The debugging output from this situation was
309 non-existent - all you got was a failure to exec. I have made two
310 changes:
311
312 (a) Failures to set uid/gid, the current directory, or a process leader
313 in a subprocess such as that created by queryprogram now generate
314 suitable debugging ouput when -d is set.
315
316 (b) The queryprogram router detects when it is not running as root,
317 outputs suitable debugging information if -d is set, and then runs
318 the subprocess without attempting to change uid/gid.
319
9edc04ce
PH
320PH/15 Minor change to Makefile for building test_host (undocumented testing
321 feature).
322
1349e1e5
PH
323PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
324 additional section of a DNS packet that returns MX or SRV records.
325 Instead, it always explicitly searches for A/AAAA records. This avoids
326 major problems that occur when a DNS server includes only records of one
327 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
328 fixed another bug: if SRV records were looked up and the corresponding
329 address records were *not* found in the additional section, the port
330 values from the SRV records were lost.
331
ea49d0e1
PH
332PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
333 using the correct key (the original address) when searching the retry
334 rules in order to find which one to use for generating the retry hint.
335
064a94c9
PH
336PH/18 If quota_warn_message contains a From: header, Exim now refrains from
337 adding the default one. Similarly, if it contains a Reply-To: header, the
338 errors_reply_to option, if set, is not used.
339
727071f8
PH
340PH/19 When calculating a retry time, Exim used to measure the "time since
341 failure" by looking at the "first failed" field in the retry record. Now
342 it does not use this if it is later than than the arrival time of the
343 message. Instead it uses the arrival time. This makes for better
344 behaviour in cases where some deliveries succeed, thus re-setting the
345 "first failed" field. An example is a quota failure for a huge message
346 when small messages continue to be delivered. Without this change, the
347 "time since failure" will always be short, possible causing more frequent
348 delivery attempts for the huge message than are intended.
dd16e114 349 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 350
f78eb7c6
PH
351PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
352 $1, $2, $3) because the numerical variables can be reset during some
353 expansion items (e.g. "match"), thereby losing the authentication data.
354
21c28500
PH
355PH/21 Make -bV show the size of off_t variables so that the test suite can
356 decide whether to run tests for quotas > 2G.
357
358PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
359 mailbox_size, and mailbox_filecount in the appendfile transport. If a
360 filecount value is greater than 2G or if a quota value is greater than 2G
361 on a system where the size of off_t is not greater than 4, a panic error
362 is given.
363
1688f43b
PH
364PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
365 never match. The debug and -bh output now contains an explicit error
366 message indicating a malformed IPv4 address or mask.
367
368PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
369 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
370 PH/23 above applies.
371
9675b384
PH
372PH/25 Do not write to syslog when running in the test harness. The only
373 occasion when this arises is a failure to open the main or panic logs
374 (for which there is an explicit test).
375
6a3f1455
PH
376PH/26 Added the /no_tell option to "control=freeze".
377
dac79d3e
PH
378PH/27 If a host name lookup failed very early in a connection, for example, if
379 the IP address matched host_lookup and the reverse lookup yielded a name
380 that did not have a forward lookup, an error message of the form "no IP
381 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
382 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 383
5977a0b3
PH
384PH/28 An enabling patch from MH: add new function child_open_exim2() which
385 allows the sender and the authenticated sender to be set when
386 submitting a message from within Exim. Since child_open_exim() is
387 documented for local_scan(), the new function should be too.
388
c91535f3
PH
389PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
390 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
391 results in an empty string is now treated as unset.
392
0d46a8c8
PH
393PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
394
278c6e6c
PH
395PH/31 Added sender_verify_fail logging option.
396
2cbb4081
PH
397PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
398 needed by RFC 822 but not by RFC 2822 was commented out. I have now
399 tidied the source and removed it altogether.
400
3eef829e
PH
401PH/33 When a queue run was abandoned because the load average was too high, a
402 log line was always written; now it is written only if the queue_run log
403 selector is set. In addition, the log line for abandonment now contains
404 information about the queue run such as the pid. This is always present
405 in "start" and "stop" lines but was omitted from the "abandon" line.
406
1ab95fa6
PH
407PH/34 Omit spaces between a header name and the colon in the error message that
408 is given when verify = headers_syntax fails (if there are lots of them,
409 the message gets confusing).
410
230205fc
PH
411PH/35 Change the default for dns_check_names_pattern to allow slashes within
412 names, as there are now some PTR records that contain slashes. This check
413 is only to protect against broken name servers that fall over on strange
414 characters, so the fact that it applies to all lookups doesn't matter.
415
75e0e026
PH
416PH/36 Now that the new test suite is complete, we can remove some of the
417 special code in Exim that was needed for the old test suite. For example,
418 sorting DNS records because real resolvers return them in an arbitrary
419 order. The new test suite's fake resolver always returns records in the
420 same order.
421
422PH/37 When running in the test harness, use -odi for submitted messages (e.g.
423 bounces) except when queue_only is set, to avoid logging races between
424 the different processes.
425
145396a6
PH
426PH/38 Panic-die if .include specifies a non-absolute path.
427
3cd34f13
PH
428PH/39 A tweak to the "H" retry rule from its user.
429
11121d3d
JJ
430JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
431 a label. They prevented compilation on older perls.
432
433JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
434 a warning to be raised on newish perls.
435
436JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
437 on queue. Changes to match documented behaviour of showing count of
438 messages matching specified criteria.
439
8def5aaf
PH
440PH/40 Changed the default ident timeout from 30s to 5s.
441
929ba01c
PH
442PH/41 Added support for the use of login_cap features, on those BSD systems
443 that have them, for controlling the resources used by pipe deliveries.
444
2632889e
PH
445PH/42 The content-scanning code uses fopen() to create files in which to put
446 message data. Previously it was not paying any attention to the mode of
447 the files. Exim runs with umask(0) because the rest of the code creates
448 files with open(), and sets the required mode explicitly. Thus, these
449 files were ending up world-writeable. This was not a big issue, because,
450 being within the spool directory, they were not world-accessible. I have
451 created a function called modefopen, which takes an additional mode
452 argument. It sets umask(777), creates the file, chmods it to the required
453 mode, then resets the umask. All the relevant calls to fopen() in the
454 content scanning code have been changed to use this function.
455
944a9c55
PH
456PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
457 to 24 hours. This avoids potential overflow problems when processing G
458 and H retry rules. I suspect nobody ever tinkers with this value.
459
4a23603b
PH
460PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
461
4730f942
PH
462PH/45 When the plaintext authenticator is running as a client, the server's
463 challenges are checked to ensure they are valid base64 strings. By
464 default, the authentication attempt is cancelled if an invalid string is
465 received. Setting client_ignore_invalid_base64 true ignores these errors.
466 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
467 they are received. Thus, the responses can be made to depend on the
468 challenges. If an invalid string is ignored, an empty string is placed in
469 the variable.
470
30dba1e6
PH
471PH/46 Messages that are created by the autoreply transport now contains a
472 References: header, in accordance with RFCs 2822 and 3834.
473
382afc6b
PH
474PH/47 Added authenticated_sender_force to the smtp transport.
475
a86229cf
PH
476PH/48 The ${prvs expansion was broken on systems where time_t was long long.
477
50c99ba6
PH
478PH/49 Installed latest patch from the Sieve maintainer.
479
d35e429d
PH
480PH/50 When an Exim quota was set without a file count quota, and mailbox_size
481 was also set, the appendfile transport was unnecessarily scanning a
482 directory of message files (e.g. for maildir delivery) to find the count
483 of files (along with the size), even though it did not need this
484 information. It now does the scan only if it needs to find either the
485 size of the count of files.
486
f90d018c
PH
487PH/51 Added ${time_eval: to convert Exim time strings into seconds.
488
75def545
PH
489PH/52 Two bugs concerned with error handling when the smtp transport is
490 used in LMTP mode:
491
492 (i) Exim was not creating retry information for temporary errors given
493 for individual recipients after the DATA command when the smtp transport
494 was used in LMTP mode. This meant that they could be retried too
495 frequently, and not timed out correctly.
496
497 (ii) Exim was setting the flag that allows error details to be returned
498 for LMTP errors on RCPT commands, but not for LMTP errors for individual
499 recipients that were returned after the DATA command.
500
501PH/53 This is related to PH/52, but is more general: for any failing address,
502 when detailed error information was permitted to be returned to the
503 sender, but the error was temporary, then after the final timeout, only
504 "retry timeout exceeded" was returned. Now it returns the full error as
505 well as "retry timeout exceeded".
506
c46782ef
PH
507PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
508 do this, and (what is worse) MTAs that accept it.
509
71fafd95
PH
510PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
511 will now be deprecated.
512
2c5db4fd
PH
513PH/56 New os.c-cygwin from the Cygwin maintainer.
514
9cf6b11a
JJ
515JJ/06 exipick: added --unsorted option to allow unsorted output in all output
516 formats (previously only available in exim formats via -bpr, -bpru,
517 and -bpra. Now also available in native and exiqgrep formats)
518
519JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
520 with very large, slow to parse queues
521
522JJ/08 exipick: added ! as generic prefix to negate any criteria format
523
524JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
525
898d150f
PH
526PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
527 responses to authentication challenges, though it was showing the
528 challenges; (ii) I've removed the CR characters from the debug output for
529 SMTP output lines.
530
46218253
PH
531PH/58 Allow for the insertion of a newline as well as a space when a string
532 is turned into more than one encoded-word during RFC 2047 encoding. The
533 Sieve code now uses this.
534
e97957bc
PH
535PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
536 data_4xx, lost_connection, tls_required.
537
81e509d7
PH
538PH/60 When a VRFY deferred or FAILED, the log message rather than the user
539 message was being sent as an SMTP response.
540
3d240ff7
PH
541PH/61 Add -l and -k options to exicyclog.
542
b37c4101
PH
543PH/62 When verifying, if an address was redirected to one new address, so that
544 verification continued, and the new address failed or deferred after
545 having set something in $address_data, the value of $address_data was not
546 passed back to the ACL. This was different to the case when no
547 redirection occurred. The value is now passed back in both cases.
548
79378e0f
PH
549PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
550 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
551 use login_cap.h, so on its own it isn't the distinguishing feature. The
552 new name refers directly to the setclassresources() function.
553
e49c7bb4
PH
554PH/65 Added configuration files for NetBSD3.
555
d114ec46
PH
556PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
557
f3d7df6c
PH
558PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
559 is preferred over IPv4.
560
715ab376
PH
561PH/68 The bounce_return_message and bounce_return_body options were not being
562 honoured for bounces generated during the reception of non-SMTP messages.
563 In particular, this applied to messages rejected by the ACL. This bug has
564 been fixed. However, if bounce_return_message is true and bounce_return_
565 body is false, the headers that are returned for a non-SMTP message
566 include only those that have been read before the error was detected.
567 (In the case of an ACL rejection, they have all been read.)
568
6b31b150
PH
569PH/69 The HTML version of the specification is now built in a directory called
570 spec_html instead of spec.html, because the latter looks like a path with
571 a MIME-type, and this confuses some software.
572
573PH/70 Catch two compiler warnings in sieve.c.
574
d515a917
PH
575PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
576 function verify_get_ident() calls ip_connect() to connect a socket, but
577 if the "connect()" function timed out, ip_connect() used to close the
578 socket. However, verify_get_ident() also closes the socket later, and in
579 between Exim writes to the log, which may get opened at this point. When
580 the socket was closed in ip_connect(), the log could get the same file
581 descriptor number as the socket. This naturally causes chaos. The fix is
582 not to close the socket in ip_connect(); the socket should be closed by
583 the function that creates it. There was only one place in the code where
584 this was missing, in the iplookup router, which I don't think anybody now
585 uses, but I've fixed it anyway.
586
9b8fadde
PH
587PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
588 well as to direct DNS lookups. Otherwise the handling of names in host
589 lists is inconsistent and therefore confusing.
590
214e2000 591
5de37277
PH
592Exim version 4.60
593-----------------
594
cc38ddbf
PH
595PH/01 Two changes to the default runtime configuration:
596
597 (1) Move the checks for relay_from_hosts and authenticated clients from
598 after to before the (commented out) DNS black list checks.
599
600 (2) Add control=submission to the relay_from_hosts and authenticated
601 clients checks, on the grounds that messages accepted by these
602 statements are most likely to be submissions.
5de37277 603
72fdd6ae
PH
604PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
605
606 (1) Generate an error if the third argument for the ${prvs expansion is
607 not a single digit.
608
609 (2) Treat a missing third argument of ${prvscheck as if it were an empty
610 string.
611
612 (3) Reset the variables that are obtained from the first argument of
613 ${prvscheck and used in the second argument before leaving the code,
614 because their memory is reclaimed, so using them afterwards may do
615 silly things.
616
617 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
618 one (it's much easier than Tom thought :-).
619
620 (5) Because of (4), we can now allow for the use of $prvscheck_result
621 inside the third argument.
cb9328de 622
cb741023
PH
623PH/03 For some reason, the default setting of PATH when running a command from
624 a pipe transport was just "/usr/bin". I have changed it to
625 "/bin:/usr/bin".
626
f174f16e
PH
627PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
628 anything to be listed in the output from -bV.
b2f5a032 629
c25242d7
PH
630PH/05 When a filter generated an autoreply, the entire To: header line was
631 quoted in the delivery log line, like this:
632
633 => >A.N.Other <ano@some.domain> <original@ddress> ...
634
635 This has been changed so that it extracts the operative address. There
636 may be more than one such address. If so, they are comma-separated, like
637 this:
638
639 => >ano@some.domain,ona@other.domain <original@ddress> ...
640
82c19f95
PH
641PH/06 When a client host used a correct literal IP address in a HELO or EHLO
642 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
643 not being looked up in the rDNS to get a host name, Exim was showing the
644 IP address twice in Received: lines, even though the IP addresses were
645 identical. For example:
646
647 Received: from [1.2.3.4] (helo=[1.2.3.4])
648
649 However, if the real host name was known, it was omitting the HELO data
650 if it matched the actual IP address. This has been tidied up so that it
651 doesn't show the same IP address twice.
652
d7ffbc12
PH
653PH/07 When both +timestamp and +memory debugging was on, the value given by
654 $tod_xxx expansions could be wrong, because the tod_stamp() function was
655 called by the debug printing, thereby overwriting the timestamp buffer.
656 Debugging no longer uses the tod_stamp() function when +timestamp is set.
657
9f526266
PH
658PH/08 When the original message was included in an autoreply transport, it
659 always said "this is a copy of the message, including all the headers",
660 even if body_only or headers_only was set. It now gives an appropriate
661 message.
662
87fcc8b9
PH
663PH/09 Applied a patch from the Sieve maintainer which:
664
665 o fixes some comments
666 o adds the (disabled) notify extension core
667 o adds some debug output for the result of if/elsif tests
668 o points to the current vacation draft in the documentation
669 and documents the missing references header update
670
671 and most important:
672
673 o fixes a bug in processing the envelope test (when testing
674 multiple envelope elements, the last element determinted the
675 result)
676
456682f5
PH
677PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
678 Electronic Mail") by including:
679
680 Auto-submitted: auto-generated
681
682 in the messages that it generates (bounce messages and others, such as
683 warnings). In the case of bounce messages for non-SMTP mesages, there was
684 also a typo: it was using "Auto_submitted" (underscore instead of
685 hyphen). Since every message generated by Exim is necessarily in response
686 to another message, thes have all been changed to:
687
688 Auto-Submitted: auto-replied
689
690 in accordance with these statements in the RFC:
691
692 The auto-replied keyword:
693
694 - SHOULD be used on messages sent in direct response to another
695 message by an automatic process,
696
697 - MUST NOT be used on manually-generated messages,
698
699 - MAY be used on Delivery Status Notifications (DSNs) and Message
700 Disposition Notifications (MDNs),
701
702 - MUST NOT be used on messages generated by automatic or periodic
703 processes, except for messages which are automatic responses to
704 other messages.
705
3e46c1aa
PH
706PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
707 to the default Received: header definition.
456682f5 708
49826d12
PH
709PH/12 Added log selector acl_warn_skipped (default on).
710
eba0c039
PH
711PH/13 After a successful wildlsearch lookup, discard the values of numeric
712 variables because (a) they are in the wrong storage pool and (b) even if
713 they were copied, it wouldn't work properly because of the caching.
714
a0d6ba8a
PH
715PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
716 checking when decoding. Apparently there are clients that generate
717 overlong encoded strings. Why am I not surprised?
718
f0917727
PH
719PH/15 If the first argument of "${if match_address" was not empty, but did not
720 contain an "@" character, Exim crashed. Now it writes a panic log message
721 and treats the condition as false.
722
096fee00
PH
723PH/16 In autoreply, treat an empty string for "once" the same as unset.
724
024bd3c2
PH
725PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
726 extension "envelope-auth". The code is finished and in agreement with
727 other implementations, but there is no documentation so far and in fact,
728 nobody wrote the draft yet. This extension is currently #undef'ed, thus
729 not changing the active code.
730
731 Print executed "if" and "elsif" statements when debugging is used. This
732 helps a great deal to understand what a filter does.
733
734 Document more things not specified clearly in RFC3028. I had all this
735 sorted out, when out of a sudden new issues came to my mind. Oops."
736
df199fec
PH
737PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
738 (Bugzilla #53).
739
d27f1df3
PH
740PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
741 canonical form (as documented). However, after a host name lookup from
742 the IP address, check_host() was doing a simple string comparison with
743 addresses acquired from the DNS when checking that the found name did
744 have the original IP as one of its addresses. Since any found IPv6
745 addresses are likely to be in abbreviated form, the comparison could
746 fail. Luckily, there already exists a function for doing the comparison
747 by converting both addresses to binary, so now that is used instead of
748 the text comparison.
749
96776534
PH
750PH/20 There was another similar case to PH/19, when a complete host name was
751 given in a host list; looking up its IP address could give an abbreviated
752 form, whereas the current host's name might or might not be abbreviated.
753 The same fix has been applied.
754
5de37277 755
9a799bc0
PH
756Exim version 4.54
757-----------------
758
759PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
760 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
761 It now does.
762
99a4b039
PH
763PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
764 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
765
766PH/03 Typo: missing ".o" in src/pcre/Makefile.
767
4b233853
PH
768PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
769 header line, restrict the check to what is listed in RFCs 2369 and 2929.
770 Also, for "Auto-Submitted", treat anything other than "no" as
771 non-personal, in accordance with RFC 3834. (Previously it treated
772 anything starting "auto-" as non-personal.)
773
8857ccfd
PH
774TF/01 The control=submission/name=... option had a problem with syntax
775 errors if the name included a slash character. The /name= option
776 now slurps the rest of the string, so it can include any characters
777 but it must come last in the list of options (after /sender_retain
778 or /domain=).
779
433a2980
PH
780PH/05 Some modifications to the interface to the fake nameserver for the new
781 testing suite.
782
3e46c1aa 783
9a799bc0 784
e3a311ba
TK
785Exim version 4.53
786-----------------
787
788TK/01 Added the "success_on_redirect" address verification option. See
789 NewStuff for rationale and an example.
790
13b685f9
PH
791PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
792
395ff96d
PH
793PH/02 Patch to exigrep to allow it to work on syslog lines.
794
5b68f6e4
PH
795PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
796 fread() to skip over the body file's header line, because in Cygwin the
797 header line is locked and is inaccessible.
798
1ab52c69
PH
799PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
800 co-exist for some time) to make it clear that it is the Exim ID that is
801 referenced, not the Message-ID: header line.
802
b07e6aa3
PH
803PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
804 string_format() function, because snprintf() does not exist on all
805 operating systems.
806
254e032f
PH
807PH/06 The use of forbid_filter_existstest now also locks out the use of the
808 ${stat: expansion item.
809
3af76a81
PH
810PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
811 protocol synchronization error", to keep the pedants happy.
812
2548ba04
PH
813PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
814 well as for IRIX systems, when gcc is being used. See the host.c source
815 file for comments.
816
b6c6011d
PH
817PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
818
cf39cf57
PH
819PH/10 Named domain lists were not working if used in a queue_smtp_domains
820 setting.
821
f1513293
PH
822PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
823 transport and to the smtp transport in LMTP mode.
824
727549a4
PH
825TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
826
af46795e
PH
827PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
828 run a filter in a subprocess. This could lead to confusion in subsequent
829 lookups in the parent process. There should also be a search_tidyup() at
830 the end of the subprocess.
831
d7b47fd0
PH
832PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
833 only if the host matched helo_try_verify_hosts, which caused the
834 verification to occur when the EHLO/HELO command was issued. The ACL just
835 tested the remembered result. Now, if a previous verification attempt has
836 not happened, "verify = helo" does it there and then.
837
ee744174
JJ
838JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
839
b582ab87
PH
840TK/03 Fix log output including CR from clamd.
841
41a13e0a
PH
842PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
843 exist provoked a memory error which could cause a segfault.
844
f625cc5a
PH
845PH/15 Installed PCRE 6.2
846
847PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
848
21f7af35
PH
849PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
850 of the problem. Specifically, suggested +O2 rather than +O1 for the
851 HP-UX compiler.
852
31480e42
PH
853PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
854
2d280592
PH
855PH/20 If a delivery was routed to a non-standard port by means of an SRV
856 record, the port was not correctly logged when the outgoing_port log
857 selector was set (it logged the transort's default port).
858
7cd1141b
PH
859PH/21 Added support for host-specific ports to manualroute, queryprogram,
860 fallback_hosts, and "hosts" in the smtp transport.
861
862PH/22 If the log selector "outgoing_port" is set, the port is now also given on
863 host errors such as "Connection refused".
864
750af86e
PH
865PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
866 authentication with radiusclient 0.4.9:
867
868 - Error returned from rc_read_config was caught wrongly
869 - Username/password not passed on to radius server due to wrong length.
870
871 The presumption is that some radiusclient API changes for 4.51/PH/17
872 were not taken care of correctly. The code is still untested by me (my
873 Linux distribution still has 0.3.2 of radiusclient), but it was
874 contributed by a Radius user.
875
876PH/24 When doing a callout, the value of $domain wasn't set correctly when
877 expanding the "port" option of the smtp transport.
878
4304270b
TK
879TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
880 while reading a MIME header. Thanks to Tom Hughes for a patch.
881
750af86e
PH
882PH/24 Include config.h inside local_scan.h so that configuration settings are
883 available.
884
64ffc24f
PH
885PH/25 Make $smtp_command_argument available after all SMTP commands. This means
886 that in an ACL for RCPT (for example), you can examine exactly what was
887 received.
888
5dd9625b
PH
889PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
890 commands, but it was not correctly comparing the address with the actual
891 client host address. Thus, it would show the EHLO address in Received:
892 header lines when this was not necessary.
893
5591031b
PH
894PH/27 Added the % operator to ${eval:}.
895
ba18e66a
PH
896PH/28 Exim tries to create and chdir to its spool directory when it starts;
897 it should be ignoring failures (because with -C, for example, it has lost
898 privilege). It wasn't ignoring creation failures other than "already
899 exists".
900
9cec981f
PH
901PH/29 Added "crypteq" to the list of supported features that Exim outputs when
902 -bV or -d is used.
903
aa2b5c79
PH
904PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
905 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
906 too many continuations, the temporary file was not being removed, and the
907 return code was incorrect.
aa2b5c79 908
48a53b7f
PH
909PH/31 Missing "BOOL" in function definition in filtertest.c.
910
1c59d63b
PH
911PH/32 Applied Sieve patches from the maintainer.
912
671012da
TK
913TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
914
1509d3a8
PH
915PH/33 Added "verify = not_blind".
916
917PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
918 Local/Makefile (with some defaults set). These are used in built scripts
919 such as exicyclog, but they have never been used in the exim_install
920 script (though there are many overriding facilities there). I have
921 arranged that the exim_install script now takes note of these two
922 settings.
923
924PH/35 Installed configuration files for Dragonfly.
925
2fe1a124
PH
926PH/36 When a locally submitted message by a trusted user did not contain a
927 From: header, and the sender address was obtained from -f or from an SMTP
928 MAIL command, and the trusted user did not use -F to supply a sender
929 name, $originator_name was incorrectly used when constructing a From:
930 header. Furthermore, $originator_name was used for submission mode
931 messages from external hosts without From: headers in a similar way,
932 which is clearly wrong.
933
8800895a
PH
934PH/37 Added control=suppress_local_fixups.
935
ccfdb010
PH
936PH/38 When log_selector = +received_sender was set, and the addition of the
937 sender made the log line's construction buffer exactly full, or one byte
938 less than full, an overflow happened when the terminating "\n" was
939 subsequently added.
940
1130bfb0
PH
941PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
942 when the result of a list match is failure because a DNS lookup failed.
943
ebcb507f
PH
944PH/40 RM_COMMAND is now used in the building process.
945
c35e155c
PH
946PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
947 the "build-* directories that it finds.
948
95d1f782
PH
949PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
950 address in a domain literal was a prefix of an interface address.
951
fd6de02e
PH
952PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
953 when verifying a sender address, unless rewrite_headers is false.
954
58de37c5
PH
955PH/44 Wrote a long comment about why errors_to addresses are verified as
956 recipients, not senders.
957
261cf466
TF
958TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
959 the ratelimit ACL was added.
960
3ee512ff
PH
961PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
962
e08c430f
PH
963PH/46 Added extra information about PostgreSQL errors to the error string.
964
bef5a11f
PH
965PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
966 avoiding the need to install special zones in a real server. This is
967 backwards compatible; if it can't find the fake resolver, it drops back.
968 Thus, both old and new test suites can be run.
969
7546de58
TF
970TF/02 Added util/ratelimit.pl
971
e5d5a95f
TF
972TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
973 clock is set back in time.
974
2e88a017
TF
975TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
976 Candler <B.Candler@pobox.com>.
977
a5f65aa4
TF
978TF/05 The fix for PH/43 was not completely correct; widen_domains is always
979 OK for addresses that are the result of redirections.
980
e7726cbf
PH
981PH/48 A number of further additions for the benefit of the new test suite,
982 including a fake gethostbyname() that interfaces to the fake DNS resolver
983 (see PH/47 above).
984
a7fdad5b
TF
985TF/06 The fix for widen_domains has also been applied to qualify_single and
986 search_parents which are the other dnslookup options that can cause
987 header rewrites.
988
6af56900
PH
989PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
990 type ("H").
991
0925ede6
PH
992PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
993
66afa403
TF
994TF/07 Exim produced the error message "an SRV record indicated no SMTP
995 service" if it encountered an MX record with an empty target hostname.
996 The message is now "an MX or SRV record indicated no SMTP service".
997
0154e85a
TF
998TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
999 if the DNS of the sending site is misconfigured. This is quite a
1000 common situation. This change restores the behaviour of treating a
1001 helo verification defer as a failure.
1002
16f12c76
PH
1003PH/51 If self=fail was set on a router, the bounce message did not include the
1004 actual error message.
1005
bbe902f0 1006
e5a9dba6
PH
1007Exim version 4.52
1008-----------------
1009
1010TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1011
22c3b60b
PH
1012PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1013 command itself ended in error, the underlying message about the transport
1014 filter timeout was being overwritten with the pipe command error. Now the
1015 underlying error message should be appended to the second error message.
1016
06a9b4b5
PH
1017TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1018
c1ac6996
PH
1019PH/02 Reduce the amount of output that "make" produces by default. Full output
1020 can still be requested.
1021
9c7a242c
PH
1022PH/03 The warning log line about a condition test deferring for a "warn" verb
1023 was being output only once per connection, rather than after each
1024 occurrence (because it was using the same function as for successful
1025 "warn" verbs). This seems wrong, so I have changed it.
1026
87ba3f5f
PH
1027TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1028 it should not have, which might have caused a crash in the right
1029 circumstances, but probably never did.
1030
1031PH/04 Installed a modified version of Tony Finch's patch to make submission
1032 mode fix the return path as well as the Sender: header line, and to
1033 add a /name= option so that you can make the user's friendly name appear
1034 in the header line.
1035
29aba418
TF
1036TF/03 Added the control = fakedefer ACL modifier.
1037
fe0dab11
TF
1038TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1039 Mark Lowes for thorough testing.
870f6ba8 1040
11d337a4
TK
1041TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1042
1043TK/03 Merged latest SRS patch from Miles Wilton.
1044
415c8f3b
PH
1045PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1046 with the definition in sysexits.h (which is #included earlier).
1047 Fortunately, Exim does not actually use EX_OK. The code used to try to
1048 preserve the sysexits.h value, by assumimg that macro definitions were
1049 scanned for macro replacements. I have been disabused of this notion,
1050 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1051
958541e9
PH
1052PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1053 in the smtp transport. When a block could not be written in a single
1054 write() function, the timeout was being re-applied to each part-write.
1055 This seems wrong - if the receiver was accepting one byte at a time it
1056 would take for ever. The timeout is now adjusted when this happens. It
1057 doesn't have to be particularly precise.
1058
c206415f
TK
1059TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1060 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1061
2a4be8f9
PH
1062PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1063 without a domain if the check to <postmaster@domain> fails.
1064
1cba11c5
SC
1065SC/01 Eximstats: added -xls and the ability to specify output files
1066 (patch written by Frank Heydlauf).
1067
1068SC/02 Eximstats: use FileHandles for outputing results.
1069
1070SC/03 Eximstats: allow any combination of xls, txt, and html output.
1071
1072SC/04 Eximstats: fixed display of large numbers with -nvr option
1073
1074SC/05 Eximstats: fixed merging of reports with empty tables.
1075
1076SC/06 Eximstats: added the -include_original_destination flag
1077
1078SC/07 Eximstats: removed tabs and trailing whitespace.
1079
1005d00e
TK
1080TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1081
1082TK/06 MBOX spool code: Add real "From " MBOX separator line
1083 so the .eml file is really in mbox format (even though
1084 most programs do not really care). Patch from Alex Miller.
1085
1086TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1087 The latter is generated from $received_to and is only set if the
1088 message has one envelope recipient. SA can use these headers,
1089 obviously out-of-the-box. Patch from Alex Miller.
1090
9b4768fa
PH
1091PH/08 The ${def test on a variable was returning false if the variable's
1092 value was "0", contrary to what the specification has always said!
1093 The result should be true unless the variable is empty.
1094
1095PH/09 The syntax error of a character other than { following "${if
1096 def:variable_name" (after optional whitespace) was not being diagnosed.
1097 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1098 accidental colon was present, for example, could give incorrect results.
1099
0d7eb84a
PH
1100PH/10 Tidied the code in a number of places where the st_size field of a stat()
1101 result is used (not including appendfile, where other changes are about
1102 to be made).
1103
1104PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1105 This involved changing a lot of size variables from int to off_t. It
1106 should work with maildirs and everything.
1107
40727bee
TK
1108TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1109 spamd dying while we are connected to it.
1110
554d2369
TF
1111TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1112 <jgh@wizmail.org>
1113
1f922db1
PH
1114PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1115 function for BDB 4.3.
1116
ef213c3b
PH
1117PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1118
8ac170f3
PH
1119PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1120 the sources for PCRE have been re-arranged and more files are now
1121 involved.
1122
b1c749bb
PH
1123PH/15 The code I had for printing potentially long long variables in PH/11
1124 above was not the best (it lost precision). The length of off_t variables
1125 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1126 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1127 to be "long long int" or "long int". This is needed for the internal
1128 formatting function string_vformat().
b1c749bb 1129
4aac9b49
PH
1130PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1131 the configuration file to be ":syslog", then the script "guesses" where
1132 the logs files are, rather than using the compiled in default. In our
1133 case the guess is not the same as the compiled default, so the script
1134 suddenly stopped working when I started to use syslog. The patch checks
1135 to see if log_file_path is "". If so, it attempts to read it from exim
1136 with no configuration file to get the compiled in version, before it
1137 falls back to the previous guessing code."
1138
294520c8
TK
1139TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1140 implementing BATV in an Exim configuration. See NewStuff for the gory
1141 details.
1142
5bd022fe
PH
1143PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1144 Makefile that are specific to HP-UX.
1145
90e9ce59
PH
1146PH/18 If the "use_postmaster" option was set for a recipient callout together
1147 with the "random" option, the postmaster address was used as the MAIL
1148 FROM address for the random test, but not for the subsequent recipient
1149 test. It is now used for both.
1150
5ea81592
PH
1151PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1152 patch removes a few documentation additions to RFC 3028, because the
1153 latest draft now contains them. It adds the new en;ascii-case comparator
1154 and a new error check for 8bit text in MIME parts. Comparator and
1155 require names are now matched exactly. I enabled the subaddress
1156 extension, but it is not well tested yet (read: it works for me)."
1157
c6c2dc1d
PH
1158PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1159 rework some of the code of TK/09 above to avoid the hardwired use of
1160 "%lld" and "long long". Replaced the call to snprintf() with a call to
1161 string_vformat().
1162
fffffe4c
PH
1163PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1164 records point to non-existent hosts", "retry timeout exceeded", and
1165 "retry time not reached for any host after a long failure period".
ca02eafb 1166
9a26b6b2
PH
1167PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1168 experimental DomainKeys support:
1169
1170 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1171 (2) On an error such as an illegally used "control", the wrong name for
1172 the control was given.
1173
1174 These problems did NOT occur unless DomainKeys support was compiled.
1175
4aee0225
PH
1176PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1177
32d668a5
PH
1178PH/24 Added ${if match_ip condition.
1179
8187c3f3
PH
1180PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1181 databases so that it will be absolutely obvious if a crash occurs in the
1182 DB library. This is a regular occurrence (often caused by mis-matched
1183 db.h files).
1184
ff790e47 1185PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1186 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1187 picked up on a user's system that detects such things. There doesn't seem
1188 to be a gcc warning option for this - only an attribute that has to be
1189 put on the function's prototype. It seems that in Fedora Core 4 they have
1190 set this on a number of new functions. No doubt there will be more in due
1191 course.
ff790e47 1192
5417f6d1
PH
1193PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1194 specify a transport. However, if an address that was verified by such a
1195 router was the subject of a callout, Exim crashed because it tried to
1196 read the rcpt_include_affixes from the non-existent transport. Now it
1197 just assumes that the setting of that option is false. This bug was
1198 introduced by 4.51/PH/31.
1199
59cf8544
PH
1200PH/28 Changed -d+all to exclude +memory, because that information is very
1201 rarely of interest, but it makes the output a lot bigger. People tend to
1202 do -d+all out of habit.
1203
e7ad8a65
PH
1204PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1205 code in os-type was giving problems when libc.so lives in lib64, like on
1206 x86_64 Fedora Core.
1207
ade42478
PH
1208PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1209 aren't the modern standard, and it seems that some systems' include files
1210 don't always have them. Exim was already checking for some of the newer
1211 ones like T_AAAA, and defining it itself. I've added checks for all the
1212 record types that Exim uses.
1213
182ad5cf
PH
1214PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1215 not automatically generating a new one, as it is supposed to. This
1216 prevented TLS from working. If the file did exist, but contained invalid
1217 data, a new version was generated, as expected. It was only the case of a
1218 non-existent file that was broken.
1219
b0d9fc80
TK
1220TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1221 with a change in libdomainkeys > 0.64.
1222
1223TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1224 from DNS. If the selector record carries the flag, it now has
1225 precedence over the domain-wide flag.
1226
1227TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1228
47c7a64a
PH
1229PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1230 the use of a port name that isn't defined in /etc/services) occurred, the
1231 message was deferred as in a normal delivery, and thus remained on the
1232 spool, instead of being failed because of the mua_wrapper setting. This
1233 is now fixed, and I tidied up some of the mua_wrapper messages at the
1234 same time.
1235
a388bce4
SC
1236SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1237 the messages in a hash of arrays rather than using individual hashes.
1238 This is a bit cleaner and results in dramatic memory savings, albeit
1239 at a slight CPU cost.
1240
1241SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1242 as requested by Marc Sherman.
1243
1244SC/10 Eximstats: added histograms for user specified patterns as requested
1245 by Marc Sherman.
1246
0793e4ed
SC
1247SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1248
c58b88df
PH
1249PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1250 fopen() in the content-scanning modules that did not already have it.
1251
e7ad8a65 1252
7982096b
PH
1253Exim version 4.51
1254-----------------
1255
1a46a8c5
PH
1256TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1257 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1258
2f079f46 1259TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1260
1261TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1262
1263PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1264 to test Sieve filters that use "vacation".
1265
1266PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1267 that changes the way the GnuTLS parameters are stored in the cache file.
1268 The new format can be generated externally. For backward compatibility,
1269 if the data in the cache doesn't make sense, Exim assumes it has read an
1270 old-format file, and it generates new data and writes a new file. This
1271 means that you can't go back to an older release without removing the
1272 file.
1273
1274PH/03 A redirect router that has both "unseen" and "one_time" set does not
1275 work if there are any delivery delays because "one_time" forces the
1276 parent to be marked "delivered", so its unseen clone is never tried
1277 again. For this reason, Exim now forbids the simultaneous setting of
1278 these two options.
1279
1280PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1281 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1282 entry if you want to know the details. The fix, however, neglected to
1283 consider the case when local delivery batching is involved. The test for
1284 "previously delivered" was not happening when checking to see if an
1285 address could be batched with a previous (undelivered) one; under
1286 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1287 address.
1a46a8c5
PH
1288
1289PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1290 in its include files, and this causes problems building Exim.
1291
1292PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1293 header_syntax) but Exim was just ignoring anything given after a slash.
1294 In particular, this caused confusion with an attempt to use "verify =
1295 reverse_host_lookup/defer_ok". An error is now given when options are
1296 supplied for verify items that do not have them. (Maybe reverse_host_
1297 lookup should have a defer_ok option, but that's a different point.)
1298
1299PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1300 defined by RFC 821) to 2048, because there were problems with some AUTH
1301 commands, and RFC 1869 says the size should be increased for extended
1302 SMTP commands that take arguments.
1303
1304PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1305 Finch).
1306
1307PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1308 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1309
49c2d5ea
PH
1310PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1311 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1312 whatever). Otherwise the password may appear in the log. Following change
1313 PH/42 below, there is no longer a chance of it appearing in a bounce
1314 message.
49c2d5ea 1315
bf759a8b
PH
1316PH/11 Installed exipick version 20050225.0 from John Jetmore.
1317
83364d30
PH
1318PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1319 of its addresses was ever tried. (Bugzilla bug #2.)
1320
7999bbd7
PH
1321PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1322 the result incorrectly in the debug output. (It correctly added a newline
1323 to what was transported.)
1324
7dbf77c9
PH
1325TF/01 Added $received_time.
1326
74e0617f
PH
1327PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1328 commented out examples of how to interface to a virus scanner and to
1329 SpamAssassin. Also added commented examples of av_scanner and
1330 spamd_address settings.
1331
2f079f46
PH
1332PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1333 and controls are allowed in which ACLs. There were a couple of minor
1334 errors. Some of the entries in the conditions table (which is a table of
1335 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1336 negation of where the condition IS allowed.
1337
8c841523
PH
1338PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1339
7766a4f0
PH
1340PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1341 header file does not have a version number, so I've had to invent a new
1342 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1343 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1344 radiusclient), but it was contributed by a Radius user.
1345
8b417f2c
PH
1346PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1347 files or directories, for OpenSSL.
1348
901f42cb
PH
1349PH/19 When an Exim process that is running as root has to create an Exim log
1350 file, it does so in a subprocess that runs as exim:exim so as to get the
1351 ownership right at creation (otherwise, other Exim processes might see
1352 the file with the wrong ownership). There was no test for failure of this
1353 fork() call, which would lead to the process getting stuck as it waited
1354 for a non-existent subprocess. Forks do occasionally fail when resources
1355 run out. I reviewed all the other calls to fork(); they all seem to check
1356 for failure.
1357
f9b9210e
PH
1358PH/20 When checking for unexpected SMTP input at connect time (before writing
1359 the banner), Exim was not dealing correctly with a non-positive return
1360 from the read() function. If the client had disconnected by this time,
1361 the result was a log entry for a synchronization error with an empty
1362 string after "input=" when read() returned zero. If read() returned -1
1363 (an event I could not check), uninitialized data bytes were printed.
1364 There were reports of junk text (parts of files, etc) appearing after
1365 "input=".
1366
54cdb463
PH
1367PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1368
cf00dad6
PH
1369PH/22 Added support for macro redefinition, and (re)definition in between
1370 driver and ACL definitions.
1371
acb1b346
PH
1372PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1373 forgetting to use the resulting value; it was using the unexpanded value.
1374
c5ddb310
PH
1375PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1376 hadn't been configured. The fix is from Juergen Kreileder, who
1377 understands it better than I do:
1378
1379 "Here's what I see happening with three configured cyrus_sasl
1380 authenticators configured (plain, login, cram-md5):
1381
1382 On startup auth_cyrus_sasl_init() gets called for each of these.
1383 This means three calls to sasl_listmech() without a specified mech_list.
1384 => SASL tests which mechs of all available mechs actually work
1385 => three warnings about OTP not working
1386 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1387
1388 With the patch, sasl_listmech() also gets called three times. But now
1389 SASL's mech_list option is set to the server_mech specified in the the
1390 authenticator. Or in other words, the answer from sasl_listmech()
1391 gets limited to just the mech you're testing for (which is different
1392 for each call.)
1393 => the return list contains just 'plain' or 'login', 'cram-md5' or
1394 nothing depending on the value of ob->server_mech.
1395
1396 I've just tested the patch: Authentication still works fine,
1397 unavailable mechs specified in the exim configuration are still
1398 caught, and the auth.log warnings about OTP are gone."
1399
31619da6
PH
1400PH/25 When debugging is enabled, the contents of the command line are added
1401 to the debugging output, even when log_selector=+arguments is not
1402 specified.
1403
bebaf0fc
PH
1404PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1405 answer is "GNU", and only if the return is "GNU/something" is the answer
1406 "Linux".
1407
475fe28a
PH
1408PH/27 $acl_verify_message is now set immediately after the failure of a
1409 verification in an ACL, and so is available in subsequent modifiers. In
1410 particular, the message can be preserved by coding like this:
1411
1412 warn !verify = sender
1413 set acl_m0 = $acl_verify_message
1414
1415 Previously, $acl_verify_message was set only while expanding "message"
1416 and "log_message" when a very denied access.
1417
7e8bec7a
PH
1418PH/28 Modified OS/os.c-Linux with
1419
1420 -#ifndef OS_LOAD_AVERAGE
1421 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1422
1423 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1424 nomenclature these days.)
1425
e4a89c47
PH
1426PH/29 Installed patch from the Sieve maintainer that adds the options
1427 sieve_useraddress and sieve_subaddress to the redirect router.
1428
5ca2a9a1
PH
1429PH/30 In these circumstances:
1430 . Two addresses routed to the same list of hosts;
1431 . First host does not offer TLS;
1432 . First host accepts first address;
1433 . First host gives temporary error to second address;
1434 . Second host offers TLS and a TLS session is established;
1435 . Second host accepts second address.
1436 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1437 and peerdn, if requested) that were in fact used only for the second
1438 address.
7e8bec7a 1439
c688b954
PH
1440PH/31 When doing a callout as part of verifying an address, Exim was not paying
1441 attention to any local part prefix or suffix that was matched by the
1442 router that accepted the address. It now behaves in the same way as it
1443 does for delivery: the affixes are removed from the local part unless
1444 rcpt_include_affixes is set on the transport.
1445
fed77020
PH
1446PH/32 Add the sender address, as F=<...>, to the log line when logging a
1447 timeout during the DATA phase of an incoming message.
1448
7fe1560f
PH
1449PH/33 Sieve envelope tests were broken for match types other than :is. I have
1450 applied a patch sanctioned by the Sieve maintainer.
c688b954 1451
ebb6e6d5
PH
1452PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1453 the uid or gid is negative. A case of a negative gid caused this to be
1454 noticed. The fix allows for either to be negative.
1455
9c4e8f60
PH
1456PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1457 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1458 overlooked.
1459
1460PH/36 The change PH/12 above was broken. Fixed it.
1461
d7174846
PH
1462PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1463 the grounds that routing the same address twice would always produce the
1464 same answer. This might have been true once, but it is certainly no
1465 longer true now. Routing a child address may depend on the previous
1466 routing that produced that child. Some complicated redirection strategies
1467 went wrong when messages had multiple recipients, and made Exim's
1468 behaviour dependent on the order in which the addresses were given.
1469
1470 I have moved the duplicate checking until after the routing is complete.
1471 Exim scans the addresses that are assigned to local and remote
1472 transports, and removes any duplicates. This means that more work will be
1473 done, as duplicates will always all be routed, but duplicates are
1474 presumably rare, so I don't expect this is of any significance.
1475
1476 For deliveries to pipes, files, and autoreplies, the duplicate checking
1477 still happens during the routing process, since they are not going to be
1478 routed further.
1479
cfe75fc3
PH
1480PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1481 It corrects a timeout issue with spamd. This is Ian's comment: "The
1482 background is that sometimes spamd either never reads data from a
1483 connection it has accepted, or it never writes response data. The exiscan
1484 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1485 blindly assumes that writes won't block so it may never time out."
1486
be22d70e
PH
1487PH/39 Allow G after quota size as well as K and M.
1488
0612b098
PH
1489PH/40 The value set for $authenticated_id in an authenticator may not contain
1490 binary zeroes or newlines because the value is written to log lines and
1491 to spool files. There was no check on this. Now the value is run through
1492 the string_printing() function so that such characters are converted to
1493 printable escape sequences.
1494
2e0c1448
PH
1495PH/41 $message_linecount is a new variable that contains the total number of
1496 lines in the message. Compare $body_linecount, which is the count for the
1497 body only.
1498
447d236c
PH
1499PH/42 Exim no longer gives details of delivery errors for specific addresses in
1500 bounce and delay warning messages, except in certain special cases, which
1501 are as follows:
1502
1503 (a) An SMTP error message from a remote host;
1504 (b) A message specified in a :fail: redirection;
1505 (c) A message specified in a "fail" command in a system filter;
1506 (d) A message specified in a FAIL return from the queryprogram router;
1507 (e) A message specified by the cannot_route_message router option.
1508
1509 In these cases only, Exim does include the error details in bounce and
1510 warning messages. There are also a few cases where bland messages such
1511 as "unrouteable address" or "local delivery error" are given.
1512
d20976dc
PH
1513PH/43 $value is now also set for the "else" part of a ${run expansion.
1514
f656d135
PH
1515PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1516 being worked on, but at least Exim now implements the latest version to
1517 play with."
1518
2e2a30b4
PH
1519PH/45 In a pipe transport, although a timeout while waiting for the pipe
1520 process to complete was treated as a delivery failure, a timeout while
1521 writing the message to the pipe was logged, but erroneously treated as a
1522 successful delivery. Such timeouts include transport filter timeouts. For
1523 consistency with the overall process timeout, these timeouts are now
1524 treated as errors, giving rise to delivery failures by default. However,
1525 there is now a new Boolean option for the pipe transport called
1526 timeout_defer, which, if set TRUE, converts the failures into defers for
1527 both kinds of timeout. A transport filter timeout is now identified in
1528 the log output.
1529
9176e9f0
PH
1530PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1531 systems where "make" and "gmake" are different, calling "gmake" at top
1532 level broke things. I've arranged for the value of $(MAKE) to be passed
1533 from the Makefile to this script so that it can call the same version of
1534 "make".
1535
7982096b 1536
bbe902f0
PH
1537A note about Exim versions 4.44 and 4.50
1538----------------------------------------
1539
1540Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1541changes of various kinds. As a consequence, a big documentation update was
1542needed. This delayed the release for rather longer than seemed good, especially
1543in the light of a couple of (minor) security issues. Therefore, the changes
1544that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1545release. So 4.44 and 4.50 are in effect two different branches that both start
1546from 4.43.
1547
1548I have left the 4.50 change log unchanged; it contains all the changes since
15494.43. The change log for 4.44 is below; many of its items are identical to
1550those for 4.50. This seems to be the most sensible way to preserve the
1551historical information.
1552
1553
f7b63901 1554Exim version 4.50
495ae4b0
PH
1555-----------------
1556
5fe762f6
PH
1557 1. Minor wording change to the doc/README.SIEVE file.
1558
139059f6 1559 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1560 computation of the current number of files was incorrect.
495ae4b0 1561
7086e875
PH
1562 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1563 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1564 place.
1565
35af9f61
PH
1566 4. Give more explanation in the error message when the command for a transport
1567 filter fails to execute.
1568
b668c215
PH
1569 5. There are several places where Exim runs a non-Exim command in a
1570 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1571 was being done only for the command run by the queryprogram router. It is
1572 now done for all such subprocesses. The other cases are: ${run, transport
1573 filters, and the commands run by the lmtp and pipe transports.
1574
a494b1e1
PH
1575 6. Added CONFIGURE_GROUP build-time option.
1576
1577 7. Some older OS have a limit of 256 on the maximum number of file
1578 descriptors. Exim was using setrlimit() to set 1000 as a large value
1579 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1580 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1581
c5fcb476
PH
1582 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1583 was an oversight, and furthermore, ever since the addition of extra
1584 controls (e.g. 4.43/32), the checks on when to allow different forms of
1585 "control" were broken. There should now be diagnostics for all cases when a
1586 control that does not make sense is encountered.
1587
69358f02
PH
1588 9. Added the /retain_sender option to "control=submission".
1589
5be20824
PH
159010. $recipients is now available in the predata ACL (oversight).
1591
eb2c0248
PH
159211. Tidy the search cache before the fork to do a delivery from a message
1593 received from the command line. Otherwise the child will trigger a lookup
1594 failure and thereby defer the delivery if it tries to use (for example) a
1595 cached ldap connection that the parent has called unbind on.
1596
2a3eea10
PH
159712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1598 of $address_data from the recipient verification was clobbered by the
1599 sender verification.
1600
160113. The value of address_data from a sender verification is now available in
1602 $sender_address_data in subsequent conditions in the ACL statement.
1603
23c7ff99
PH
160414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1605
4deaf07d
PH
160615. Added a new option "connect=<time>" to callout options, to set a different
1607 connection timeout.
1608
926e1192
PH
160916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1610 was its contents. (It was OK if the option was not defined at all.)
1611
650edc6f
PH
161217. A "Completed" log line is now written for messages that are removed from
1613 the spool by the -Mrm option.
1614
2c7db3f5
PH
161518. New variables $sender_verify_failure and $recipient_verify_failure contain
1616 information about exactly what failed.
1617
3d235903
PH
161819. Added -dd to debug only the daemon process.
1619
7c7ad977
PH
162020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1621 handles timeouts, both on the server side and network timeouts. Renamed the
1622 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1623
981756db
PH
162421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1625 It is now set to "smtps".
1626
d4eb88df
PH
162722. $host_address is now set to the target address during the checking of
1628 ignore_target_hosts.
1629
163023. When checking ignore_target_hosts for an ipliteral router, no host name was
1631 being passed; this would have caused $sender_host_name to have been used if
1632 matching the list had actually called for a host name (not very likely,
1633 since this list is usually IP addresses). A host name is now passed as
1634 "[x.x.x.x]".
1635
7d468ab8
PH
163624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1637 code that specifies a non-restarting handler (typically sigaction() in
1638 modern systems) in an attempt to fix a rare and obscure crash bug.
1639
164025. Narrowed the window for a race in the daemon that could cause it to ignore
1641 SIGCHLD signals. This is not a major problem, because they are used only to
1642 wake it up if nothing else does.
1643
62c0818f
PH
164426. A malformed maildirsize file could cause Exim to calculate negative values
1645 for the mailbox size or file count. Odd effects could occur as a result.
1646 The maildirsize information is now recalculated if the size or filecount
1647 end up negative.
1648
26034054
PH
164927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1650 support for a long time. Removed HAVE_SYS_VFS_H.
1651
af66f652
PH
165228. Installed the latest version of exipick from John Jetmore.
1653
90af77f4
PH
165429. In an address list, if the pattern was not a regular expression, an empty
1655 subject address (from a bounce message) matched only if the pattern was an
1656 empty string. Non-empty patterns were not even tested. This was the wrong
1657 because it is perfectly reasonable to use an empty address as part of a
1658 database query. An empty address is now tested by patterns that are
1659 lookups. However, all the other forms of pattern expect the subject to
1660 contain a local part and a domain, and therefore, for them, an empty
1661 address still always fails if the pattern is not itself empty.
1662
d8ef3577
PH
166330. Exim went into a mad DNS loop when attempting to do a callout where the
1664 host was specified on an smtp transport, and looking it up yielded more
1665 than one IP address.
1666
5cb8cbc6
PH
166731. Re-factored the code for checking spool and log partition space into a
1668 function that finds that data and another that does the check. The former
1669 is then used to implement four new variables: $spool_space, $log_space,
1670 $spool_inodes, and $log_inodes.
1671
14702f5b
PH
167232. The RFC2047 encoding function was originally intended for short strings
1673 such as real names; it was not keeping to the 75-character limit for
1674 encoded words that the RFC imposes. It now respects the limit, and
1675 generates multiple encoded words if necessary. To be on the safe side, I
1676 have increased the buffer size for the ${rfc2047: expansion operator from
1677 1024 to 2048 bytes.
1678
063b1e99
PH
167933. It is now permitted to omit both strings after an "if" condition; if the
1680 condition is true, the result is "true". As before, when the second string
1681 is omitted, a false condition yields an empty string. This makes it less
1682 cumbersome to write custom ACL and router conditions.
1683
652e1b65
PH
168434. Failure to deliver a bounce message always caused it to be frozen, even if
1685 there was an errors_to setting on the router. The errors_to setting is now
1686 respected.
1687
6f0c9a4f
PH
168835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1689 canonical form (fully expanded) before being placed in
1690 $sender_host_address.
1691
33397d19
PH
169236. The table in the code that translates DNS record types into text (T_A to
1693 "A" for instance) was missing entries for NS and CNAME. It is just possible
1694 that this could have caused confusion if both these types were looked up
1695 for the same domain, because the text type is used as part of Exim's
1696 per-process caching. But the chance of anyone hitting this buglet seems
1697 very small.
1698
7bb56e1f
PH
169937. The dnsdb lookup has been extended in a number of ways.
1700
1701 (1) There is a new type, "zns", which walks up the domain tree until it
1702 finds some nameserver records. It should be used with care.
1703
ea3bc19b
PH
1704 (2) There is a new type, "mxh", which is like "mx" except that it returns
1705 just the host names, not the priorities.
1706
1707 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1708 looked up. The behaviour when one of the lookups defers can be
1709 controlled by a keyword.
7bb56e1f 1710
ea3bc19b 1711 (4) It is now possible to specify the separator character for use when
7bb56e1f 1712 multiple records are returned.
33397d19 1713
0bcb2a0e
PH
171438. The dnslists ACL condition has been extended: it is now possible to supply
1715 a list of IP addresses and/or domains to be looked up in a particular DNS
1716 domain.
1717
2ac0e484
PH
171839. Added log_selector=+queue_time_overall.
1719
4e1fde53
PH
172040. When running the queue in the test harness, wait just a tad after forking a
1721 delivery process, to get repeatability of debugging output.
1722
de365ded
PH
172341. Include certificate and key file names in error message when GnuTLS fails
1724 to set them up, because the GnuTLS error message doesn't include the name
1725 of the failing file when there is a problem reading it.
1726
f05da2e8
PH
172742. Allow both -bf and -bF in the same test run.
1728
d6453af2
PH
172943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1730
f7b63901
PH
173144. The "Exiscan patch" is now merged into the mainline Exim source.
1732
173345. Sometimes the final signoff response after QUIT could fail to get
1734 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1735 < 0 before doing a fflush(). This bug looks as though it goes back to the
1736 introduction of TLS in release 3.20, but "sometimes" must have been rare
1737 because the tests only now provoked it.
1738
a444213a
PH
173946. Reset the locale to "C" after calling embedded Perl, in case it was changed
1740 (this can affect the format of dates).
1741
0ec020ea
PH
174247. exim_tidydb, when checking for the continued existence of a message for
1743 which it has found a message-specific retry record, was not finding
1744 messages that were in split spool directories. Consequently, it was
1745 deleting retry records that should have stayed in existence.
1746
b1206957
PH
174748. Steve fixed some bugs in eximstats.
1748
174949. The SPA authentication driver was not abandoning authentication and moving
1750 on to the next authenticator when an expansion was forced to fail,
1751 contradicting the general specification for all authenticators. Instead it
1752 was generating a temporary error. It now behaves as specified.
1753
26dd5a95
PH
175450. The default ordering of permitted cipher suites for GnuTLS was pessimal
1755 (the order specifies the preference for clients). The order is now AES256,
1756 AES128, 3DES, ARCFOUR128.
1757
343b2385
PH
175851. Small patch to Sieve code - explicitly set From: when generating an
1759 autoreply.
1760
1c5466b9
PH
176152. Exim crashed if a remote delivery caused a very long error message to be
1762 recorded - for instance if somebody sent an entire SpamAssassin report back
1763 as a large number of 550 error lines. This bug was coincidentally fixed by
1764 increasing the size of one of Exim's internal buffers (big_buffer) that
1765 happened as part of the Exiscan merge. However, to be on the safe side, I
1766 have made the code more robust (and fixed the comments that describe what
1767 is going on).
1768
55ee9ee3
PH
176953. Now that there can be additional text after "Completed" in log lines (if
1770 the queue_time_overall log selector is set), a one-byte patch to exigrep
1771 was needed to allow it to recognize "Completed" as not the last thing in
1772 the line.
1773
d38f8232
PH
177454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1775 patch that reportedly fixes this has been added. I am not expert enough to
1776 create a test for it. This is what the patch creator wrote:
1777
1778 "I found a little strange behaviour of ldap code when working with
1779 Windows 2003 AD Domain, where users was placed in more than one
1780 Organization Units. When I tried to give exim partial DN, the exit code
1781 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1782 But simultaneously result of request was absolutely normal ldap result,
1783 so I produce this patch..."
1784
3295e65b
PH
1785 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1786 REFERENCE, so I have modified the code to exclude the patch when that macro
1787 is not defined.
1788
7102e136
PH
178955. Some experimental protocols are using DNS PTR records for new purposes. The
1790 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1791 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1792 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1793 CAN-2005-0021
7102e136 1794
3ca0ba97
PH
179556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1796
c2bcbe20
PH
179757. Double the size of the debug message buffer (to 2048) so that more of very
1798 long debug lines gets shown.
1799
18ce445d
PH
180058. The exicyclog utility now does better if the number of log files to keep
1801 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1802
1f5b4c3d
PH
180359. Two changes related to the smtp_active_hostname option:
1804
1805 (1) $smtp_active_hostname is now available as a variable.
1806 (2) The default for smtp_banner uses $smtp_active_hostname instead
1807 of $primary_hostname.
1808
b975ba52
PH
180960. The host_aton() function is supposed to be passed a string that is known
1810 to be a valid IP address. However, in the case of IPv6 addresses, it was
1811 not checking this. This is a hostage to fortune. Exim now panics and dies
1812 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1813 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1814 components; fortuitously, this particular loophole had already been fixed
1815 by change 4.50/55 above.
1816
1817 If there are any other similar loopholes, the new check in host_aton()
1818 itself should stop them being exploited. The report I received stated that
1819 data on the command line could provoke the exploit when Exim was running as
1820 exim, but did not say which command line option was involved. All I could
1821 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1822 running as the user.
ea3a6f44 1823 CAN-2005-0021
85b87bc2
PH
1824
182561. There was a buffer overflow vulnerability in the SPA authentication code
1826 (which came originally from the Samba project). I have added a test to the
1827 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1828 CAN-2005-0022
b975ba52 1829
17ffcae7
PH
183062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1831 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1832
d95f9fdb
PH
183363. The daemon start-up calls getloadavg() while still root for those OS that
1834 need the first call to be done as root, but it missed one case: when
1835 deliver_queue_load_max is set with deliver_drop_privilege. This is
1836 necessary for the benefit of the queue runner, because there is no re-exec
1837 when deliver_drop_privilege is set.
1838
86b8287f
PH
183964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1840 This has been fixed.
1841
60dc5e56
PH
184265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1843 was in use, was not putting the data itself into the right store pool;
1844 consequently, it could be overwritten for a subsequent message in the same
1845 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1846 the caching.)
1847
533244af
PH
184866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1849
a5a28604
PH
185067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1851 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1852 the function were treating the return as a boolean value, which happened to
1853 work because 0=false and not-0=true, but is not correct code.
1854
7e634d24
PH
185568. The host_aton() function was not handling scoped IPv6 addresses (those
1856 with, for example, "%eth0" on the end) correctly.
1857
3e11c26b
PH
185869. Fixed some compiler warnings in acl.c for the bitmaps specified with
1859 negated items (that is, ~something) in unsigned ints. Some compilers
1860 apparently mutter when there is no cast.
1861
6729cf78
PH
186270. If an address verification called from an ACL failed, and did not produce a
1863 user-specific message (i.e. there was only a "system" message), nothing was
1864 put in $acl_verify_message. In this situation, it now puts the system
1865 message there.
1866
00f00ca5
PH
186771. Change 4.23/11 added synchronization checking at the start of an SMTP
1868 session; change 4.31/43 added the unwanted input to the log line - except
1869 that it did not do this in the start of session case. It now does.
1870
c9bdd01c
PH
187172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1872 This is wrong and can cause the other end to generate a synchronization
1873 error if it is another Exim or anything else that does the synchronization
1874 check. A QUIT command is no longer sent after a timeout.
1875
d43194df
PH
187673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1877 during host lookups.
1878
fe5b5d0b
PH
187974. The defer_ok option of callout verification was not working if it was used
1880 when verifying addresses in header lines, that is, for this case:
1881
1882 verify = header_sender/callout=defer_ok
1883
76a2d7ba
PH
188475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1885 those file descriptors could be used for SMTP connections. If anything
1886 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1887 could be sent to the SMTP client, causing chaos. The daemon now opens
1888 stdin, stdout, and stderr to /dev/null when it puts itself into the
1889 background.
1890
189176. Arrange for output from Perl's "warn" command to be written to Exim's main
1892 log by default. The user can override this with suitable Perl magic.
1893
04f7d5b9
PH
189477. The use of log_message on a "discard" ACL verb, which is supposed to add to
1895 the log message when discard triggers, was not working for the DATA ACL or
1896 for the non-SMTP ACL.
1897
bc60667e
PH
189878. Error message wording change in sieve.c.
1899
bb6e88ff
PH
190079. If smtp_accept_max_per_host was set, the number of connections could be
1901 restricted to fewer than expected, because the daemon was trying to set up
1902 a new connection before checking whether the processes handling previous
1903 connections had finished. The check for completed processes is now done
1904 earlier. On busy systems, this bug wouldn't be noticed because something
1905 else would have woken the daemon, and it would have reaped the completed
1906 process earlier.
1907
1e70f85b
PH
190880. If a message was submitted locally by a user whose login name contained one
1909 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1910 It caused a spool format error. I have fixed the spool reading code. A
1911 related problem was that the "from" clause in the Received: line became
1912 illegal because of the space(s). It is now covered by ${quote_local_part.
1913
191481. Included the latest eximstats from Steve (adds average sizes to HTML Top
1915 tables).
1916
4e01f9d6
PH
191782. Updated OS/Makefile-AIX as per message from Mike Meredith.
1918
1ee1cef2
PH
191983. Patch from Sieve maintainer to fix unterminated string problem in
1920 "vacation" handling.
1921
6e2b4ccc
PH
192284. Some minor changes to the Linux configuration files to help with other
1923 OS variants using glibc.
1924
8e669ac1
PH
192585. One more patch for Sieve to update vacation handling to latest spec.
1926
495ae4b0 1927
bbe902f0
PH
1928----------------------------------------------------
1929See the note above about the 4.44 and 4.50 releases.
1930----------------------------------------------------
1931
1932
1933Exim version 4.44
1934-----------------
1935
1936 1. Change 4.43/35 introduced a bug that caused file counts to be
1937 incorrectly computed when quota_filecount was set in an appendfile
1938 transport
1939
1940 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1941 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1942 place.
1943
1944 3. Give more explanation in the error message when the command for a transport
1945 filter fails to execute.
1946
1947 4. There are several places where Exim runs a non-Exim command in a
1948 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1949 was being done only for the command run by the queryprogram router. It is
1950 now done for all such subprocesses. The other cases are: ${run, transport
1951 filters, and the commands run by the lmtp and pipe transports.
1952
1953 5. Some older OS have a limit of 256 on the maximum number of file
1954 descriptors. Exim was using setrlimit() to set 1000 as a large value
1955 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1956 systems. I've change it so that if it can't get 1000, it tries for 256.
1957
1958 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1959 was an oversight, and furthermore, ever since the addition of extra
1960 controls (e.g. 4.43/32), the checks on when to allow different forms of
1961 "control" were broken. There should now be diagnostics for all cases when a
1962 control that does not make sense is encountered.
1963
1964 7. $recipients is now available in the predata ACL (oversight).
1965
1966 8. Tidy the search cache before the fork to do a delivery from a message
1967 received from the command line. Otherwise the child will trigger a lookup
1968 failure and thereby defer the delivery if it tries to use (for example) a
1969 cached ldap connection that the parent has called unbind on.
1970
1971 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1972 of $address_data from the recipient verification was clobbered by the
1973 sender verification.
1974
197510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1976 was its contents. (It was OK if the option was not defined at all.)
1977
197811. A "Completed" log line is now written for messages that are removed from
1979 the spool by the -Mrm option.
1980
198112. $host_address is now set to the target address during the checking of
1982 ignore_target_hosts.
1983
198413. When checking ignore_target_hosts for an ipliteral router, no host name was
1985 being passed; this would have caused $sender_host_name to have been used if
1986 matching the list had actually called for a host name (not very likely,
1987 since this list is usually IP addresses). A host name is now passed as
1988 "[x.x.x.x]".
1989
199014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1991 code that specifies a non-restarting handler (typically sigaction() in
1992 modern systems) in an attempt to fix a rare and obscure crash bug.
1993
199415. Narrowed the window for a race in the daemon that could cause it to ignore
1995 SIGCHLD signals. This is not a major problem, because they are used only to
1996 wake it up if nothing else does.
1997
199816. A malformed maildirsize file could cause Exim to calculate negative values
1999 for the mailbox size or file count. Odd effects could occur as a result.
2000 The maildirsize information is now recalculated if the size or filecount
2001 end up negative.
2002
200317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2004 support for a long time. Removed HAVE_SYS_VFS_H.
2005
ea3a6f44 200618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2007
200819. Allow an empty sender to be matched against a lookup in an address list.
2009 Previously the only cases considered were a regular expression, or an
2010 empty pattern.
2011
201220. Exim went into a mad DNS lookup loop when doing a callout where the
2013 host was specified on the transport, if the DNS lookup yielded more than
2014 one IP address.
2015
ea3a6f44
NM
201621. The RFC2047 encoding function was originally intended for short strings
2017 such as real names; it was not keeping to the 75-character limit for
2018 encoded words that the RFC imposes. It now respects the limit, and
2019 generates multiple encoded words if necessary. To be on the safe side, I
2020 have increased the buffer size for the ${rfc2047: expansion operator from
2021 1024 to 2048 bytes.
bbe902f0 2022
ea3a6f44
NM
202322. Failure to deliver a bounce message always caused it to be frozen, even if
2024 there was an errors_to setting on the router. The errors_to setting is now
2025 respected.
bbe902f0
PH
2026
202723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2028 canonical form (fully expanded) before being placed in
2029 $sender_host_address.
2030
203124. Updated eximstats to version 1.33
2032
ea3a6f44
NM
203325. Include certificate and key file names in error message when GnuTLS fails
2034 to set them up, because the GnuTLS error message doesn't include the name
2035 of the failing file when there is a problem reading it.
bbe902f0
PH
2036
203726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2038 As per change 25.
bbe902f0 2039
ea3a6f44
NM
204027. Reset the locale to "C" after calling embedded Perl, in case it was changed
2041 (this can affect the format of dates).
bbe902f0 2042
ea3a6f44
NM
204328. exim_tidydb, when checking for the continued existence of a message for
2044 which it has found a message-specific retry record, was not finding
2045 messages that were in split spool directories. Consequently, it was
2046 deleting retry records that should have stayed in existence.
bbe902f0
PH
2047
204829. eximstats updated to version 1.35
2049 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2050 1.35 - bugfix such that pie charts by volume are generated correctly
2051
ea3a6f44
NM
205230. The SPA authentication driver was not abandoning authentication and moving
2053 on to the next authenticator when an expansion was forced to fail,
2054 contradicting the general specification for all authenticators. Instead it
2055 was generating a temporary error. It now behaves as specified.
bbe902f0 2056
ea3a6f44
NM
205731. The default ordering of permitted cipher suites for GnuTLS was pessimal
2058 (the order specifies the preference for clients). The order is now AES256,
2059 AES128, 3DES, ARCFOUR128.
bbe902f0 2060
ea3a6f44
NM
206131. Small patch to Sieve code - explicitly set From: when generating an
2062 autoreply.
bbe902f0 2063
ea3a6f44
NM
206432. Exim crashed if a remote delivery caused a very long error message to be
2065 recorded - for instance if somebody sent an entire SpamAssassin report back
2066 as a large number of 550 error lines. This bug was coincidentally fixed by
2067 increasing the size of one of Exim's internal buffers (big_buffer) that
2068 happened as part of the Exiscan merge. However, to be on the safe side, I
2069 have made the code more robust (and fixed the comments that describe what
2070 is going on).
bbe902f0 2071
ea3a6f44
NM
207233. Some experimental protocols are using DNS PTR records for new purposes. The
2073 keys for these records are domain names, not reversed IP addresses. The
2074 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2075 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2076 CAN-2005-0021
2077
ea3a6f44
NM
207834. The host_aton() function is supposed to be passed a string that is known
2079 to be a valid IP address. However, in the case of IPv6 addresses, it was
2080 not checking this. This is a hostage to fortune. Exim now panics and dies
2081 if the condition is not met. A case was found where this could be provoked
2082 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2083 components; fortuitously, this particular loophole had already been fixed
2084 by change 4.50/55 or 4.44/33 above.
2085
2086 If there are any other similar loopholes, the new check in host_aton()
2087 itself should stop them being exploited. The report I received stated that
2088 data on the command line could provoke the exploit when Exim was running as
2089 exim, but did not say which command line option was involved. All I could
2090 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2091 running as the user.
bbe902f0
PH
2092 CAN-2005-0021
2093
ea3a6f44
NM
209435. There was a buffer overflow vulnerability in the SPA authentication code
2095 (which came originally from the Samba project). I have added a test to the
2096 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2097 CAN-2005-0022
2098
ea3a6f44
NM
209936. The daemon start-up calls getloadavg() while still root for those OS that
2100 need the first call to be done as root, but it missed one case: when
2101 deliver_queue_load_max is set with deliver_drop_privilege. This is
2102 necessary for the benefit of the queue runner, because there is no re-exec
2103 when deliver_drop_privilege is set.
bbe902f0 2104
ea3a6f44
NM
210537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2106 was in use, was not putting the data itself into the right store pool;
2107 consequently, it could be overwritten for a subsequent message in the same
2108 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2109 the caching.)
bbe902f0 2110
ea3a6f44
NM
211138. Sometimes the final signoff response after QUIT could fail to get
2112 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2113 < 0 before doing a fflush(). This bug looks as though it goes back to the
2114 introduction of TLS in release 3.20, but "sometimes" must have been rare
2115 because the tests only now provoked it.
bbe902f0
PH
2116
2117
495ae4b0
PH
2118Exim version 4.43
2119-----------------
2120
2121 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2122 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2123 Now it returns an integer. A number of calls were still expecting a T/F
2124 return. Fortuitously, in all cases, the tests worked in OK situations,
2125 which is the norm. However, things would have gone wrong on any write
2126 failures on the smtp file descriptor. This function is used when sending
2127 messages over SMTP and also when doing verify callouts.
2128
2129 2. When Exim is called to do synchronous delivery of a locally submitted
2130 message (the -odf or -odi options), it no longer closes stderr before doing
2131 the delivery.
2132
2133 3. Implemented the mua_wrapper option.
2134
2135 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2136
2137 5. Implemented the functions header_remove(), header_testname(),
2138 header_add_at_position(), and receive_remove_recipient(), and exported them
2139 to local_scan().
2140
2141 6. If an ACL "warn" statement specified the addition of headers, Exim already
2142 inserted X-ACL-Warn: at the start if there was no header name. However, it
2143 was not making this test for the second and subsequent header lines if
2144 there were newlines in the string. This meant that an invalid header could
2145 be inserted if Exim was badly configured.
2146
2147 7. Allow an ACL "warn" statement to add header lines at the start or after all
2148 the Received: headers, as well as at the end.
2149
2150 8. Added the rcpt_4xx retry error code.
2151
2152 9. Added postmaster_mailfrom=xxx to callout verification option.
2153
215410. Added mailfrom=xxxx to the callout verification option, for verify=
2155 header_sender only.
2156
215711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2158 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2159
216012. Inserted some casts to stop certain compilers warning when using pointer
2161 differences as field lengths or precisions in printf-type calls (mostly
2162 affecting debugging statements).
2163
216413. Added optional readline() support for -be (dynamically loaded).
2165
216614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2167 same clock tick as a message's arrival, so that its received time was the
2168 same as the "first fail" time on the retry record, and that message
2169 remained on the queue past the ultimate address timeout, every queue runner
2170 would try a delivery (because it was past the ultimate address timeout) but
2171 after another failure, the ultimate address timeout, which should have then
2172 bounced the address, did not kick in. This was a "< instead of <=" error;
2173 in most cases the first failure would have been in the next clock tick
2174 after the received time, and all would be well.
2175
217615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2177 being recognized when the domain list was tested by the match_domain
2178 condition in an expansion string.
2179
218016. Added the ${str2b64: operator.
2181
218217. Exim was always calling setrlimit() to set a large limit for the number of
2183 processes, without checking whether the existing limit was already
2184 adequate. (It did check for the limit on file descriptors.) Furthermore,
2185 errors from getrlimit() and setrlimit() were being ignored. Now they are
2186 logged to the main and panic logs, but Exim does carry on, to try to do its
2187 job under whatever limits there are.
2188
218918. Imported PCRE 5.0.
2190
219119. Trivial typo in log message " temporarily refused connection" (the leading
2192 space).
2193
219420. If the log selector return_path_on_delivery was set and an address was
2195 redirected to /dev/null, the delivery process crashed because it assumed
2196 that a return path would always be set for a "successful" delivery. In this
2197 case, the whole delivery is bypassed as an optimization, and therefore no
2198 return path is set.
2199
220021. Internal re-arrangement: the function for sending a challenge and reading
2201 a response while authentication was assuming a zero-terminated challenge
2202 string. It's now changed to take a pointer and a length, to allow for
2203 binary data in such strings.
2204
220522. Added the cyrus_sasl authenticator (code supplied by MBM).
2206
220723. Exim was not respecting finduser_retries when seeking the login of the
2208 uid under which it was called; it was always trying 10 times. (The default
2209 setting of finduser_retries is zero.) Also, it was sleeping after the final
2210 failure, which is pointless.
2211
221224. Implemented tls_on_connect_ports.
2213
221425. Implemented acl_smtp_predata.
2215
221626. If the domain in control=submission is set empty, Exim assumes that the
2217 authenticated id is a complete email address when it generates From: or
2218 Sender: header lines.
2219
222027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2221 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2222 chown and chgrp in /bin and hostname in /usr/bin.
2223
222428. Exim was keeping the "process log" file open after each use, just as it
2225 does for the main log. This opens the possibility of it remaining open for
2226 long periods when the USR1 signal hits a daemon. Occasional processlog
2227 errors were reported, that could have been caused by this. Anyway, it seems
2228 much more sensible not to leave this file open at all, so that is what now
2229 happens.
2230
223129. The long-running daemon process does not normally write to the log once it
2232 has entered its main loop, and it closes the log before doing so. This is
2233 so that log files can straightforwardly be renamed and moved. However,
2234 there are a couple of unusual error situations where the daemon does write
2235 log entries, and I had neglected to close the log afterwards.
2236
223730. The text of an SMTP error response that was received during a remote
2238 delivery was being truncated at 512 bytes. This is too short for some of
2239 the long messages that one sometimes sees. I've increased the limit to
2240 1024.
2241
224231. It is now possible to make retry rules that apply only when a message has a
2243 specific sender, in particular, an empty sender.
2244
224532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2246 it possible to be selective about when SMTP synchronization is enforced.
2247
224833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2249
225032. Implemented hosts_connection_nolog.
2251
225233. Added an ACL for QUIT.
2253
225434. Setting "delay_warning=" to disable warnings was not working; it gave a
2255 syntax error.
2256
225735. Added mailbox_size and mailbox_filecount to appendfile.
2258
225936. Added control = no_multiline_responses to ACLs.
2260
226137. There was a bug in the logic of the code that waits for the clock to tick
2262 in the case where the clock went backwards by a substantial amount such
2263 that the microsecond fraction of "now" was more than the microsecond
2264 fraction of "then" (but the whole seconds number was less).
2265
226638. Added support for the libradius Radius client library this is found on
2267 FreeBSD (previously only the radiusclient library was supported).
2268
2269
2270Exim version 4.42
2271-----------------
2272
2273 1. When certain lookups returned multiple values in the form name=value, the
2274 quoting of the values was not always being done properly. Specifically:
2275 (a) If the value started with a double quote, but contained no whitespace,
2276 it was not quoted.
2277 (b) If the value contained whitespace other than a space character (i.e.
2278 tabs or newlines or carriage returns) it was not quoted.
2279 This fix has been applied to the mysql and pgsql lookups by writing a
2280 separate quoting function and calling it from the lookup code. The fix
2281 should probably also be applied to nisplus, ibase and oracle lookups, but
2282 since I cannot test any of those, I have not disturbed their existing code.
2283
2284 2. A hit in the callout cache for a specific address caused a log line with no
2285 reason for rejecting RCPT. Now it says "Previous (cached) callout
2286 verification failure".
2287
2288 3. There was an off-by-one bug in the queryprogram router. An over-long
2289 return line was truncated at 256 instead of 255 characters, thereby
2290 overflowing its buffer with the terminating zero. As well as fixing this, I
2291 have increased the buffer size to 1024 (and made a note to document this).
2292
2293 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2294 when Exim is waiting for an SMTP response from a remote server, Exim
2295 restarts its select() call on the socket, thereby resetting its timeout.
2296 This is not a problem when such interrupts are rare. Somebody set up a cron
2297 job to run exiwhat every 2 minutes, which is less than the normal select()
2298 timeout (5 or 10 minutes). This meant that the select() timeout never
2299 kicked in because it was always reset. I have fixed this by comparing the
2300 time when an interrupt arrives with the time at the start of the first call
2301 to select(). If more time than the timeout has elapsed, the interrupt is
2302 treated as a timeout.
2303
2304 5. Some internal re-factoring in preparation for the addition of Sieve
2305 extensions (by MH). In particular, the "personal" test is moved to a
2306 separate function, and given an option for scanning Cc: and Bcc: (which is
2307 not set for Exim filters).
2308
2309 6. When Exim created an email address using the login of the caller as the
2310 local part (e.g. when creating a From: or Sender: header line), it was not
2311 quoting the local part when it contained special characters such as @.
2312
2313 7. Installed new OpenBSD configuration files.
2314
2315 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2316 try to make them clearer.
2317
2318 9. Callout options, other than the timeout value, were being ignored when
2319 verifying sender addresses in header lines. For example, when using
2320
2321 verify = header_sender/callout=no_cache
2322
2323 the cache was (incorrectly) being used.
2324
232510. Added a missing instance of ${EXE} to the exim_install script; this affects
2326 only the Cygwin environment.
2327
232811. When return_path_on_delivery was set as a log selector, if different remote
2329 addresses in the same message used different return paths and parallel
2330 remote delivery occurred, the wrong values would sometimes be logged.
2331 (Whenever a remote delivery process finished, the return path value from
2332 the most recently started remote delivery process was logged.)
2333
233412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2335 lines when AUTH and/or TLS are in use. This is the "received protocol"
2336 field. Exim used to use "asmtp" for authenticated SMTP, without any
2337 indication (in the protocol name) for TLS use. Now it follows the RFC and
2338 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2339 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2340 names appear in log lines as well as in Received: header lines.
2341
234213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2343 extensions, and comparison tests, and to fix some bugs.
2344
234514. Changes to the "personal" filter test:
2346
2347 (1) The test was buggy in that it was just doing the equivalent of
2348 "contains" tests on header lines. For example, if a user's address was
2349 anne@some.where, the "personal" test would incorrectly be true for
2350
2351 To: susanne@some.where
2352
2353 This test is now done by extracting each address from the header in turn,
2354 and checking the entire address. Other tests that are part of "personal"
2355 are now done using regular expressions (for example, to check local parts
2356 of addresses in From: header lines).
2357
2358 (2) The list of non-personal local parts in From: addresses has been
2359 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2360 taken from the Sieve specification recommendations.
2361
2362 (3) If the message contains any header line starting with "List-" it is
2363 treated as non-personal.
2364
2365 (4) The test for "circular" in the Subject: header line has been removed
2366 because it now seems ill-conceived.
2367
236815. Minor typos in src/EDITME comments corrected.
2369
237016. Installed latest exipick from John Jetmore.
2371
237217. If headers_add on a router specified a text string that was too long for
2373 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2374 of string_sprintf() is now avoided.
2375
237618. $message_body_size was not set (it was always zero) when running the DATA
2377 ACL and the local_scan() function.
2378
237919. For the "mail" command in an Exim filter, no default was being set for
2380 the once_repeat time, causing a random time value to be used if "once" was
2381 specified. (If the value happened to be <= 0, no repeat happened.) The
2382 default is now 0s, meaning "never repeat". The "vacation" command was OK
2383 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2384 (I found it when inspecting the code).
2385
238620. There is now an overall timeout for performing a callout verification. It
2387 defaults to 4 times the callout timeout, which applies to individual SMTP
2388 commands during the callout. The overall timeout applies when there is more
2389 than one host that can be tried. The timeout is checked before trying the
2390 next host. This prevents very long delays if there are a large number of
2391 hosts and all are timing out (e.g. when the network connections are timing
2392 out). The value of the overall timeout can be changed by specifying an
2393 additional sub-option for "callout", called "maxwait". For example:
2394
2395 verify = sender/callout=5s,maxwait=20s
2396
239721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2398 to the end before writing, but this should make it even safer).
2399
240022. Exim was forgetting that it had advertised PIPELINING for the second and
2401 subsequent messages on an SMTP connection. It was also not resetting its
2402 memory on STARTTLS and an internal HELO.
2403
240423. When Exim logs an SMTP synchronization error within a session, it now
2405 records whether PIPELINING has been advertised or not.
2406
240724. Added 3 instances of "(long int)" casts to time_t variables that were being
2408 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2409 rather than long int.
2410
241125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2412
241326. Added the never_mail option to autoreply.
2414
2415
2416Exim version 4.41
2417-----------------
2418
2419 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2420 crash if the getsockname() call failed; this can happen if a connection is
2421 closed very soon after it is established. The problem was simply in the
2422 order in which certain operations were done, causing Exim to try to write
2423 to the SMTP stream before it had set up the file descriptor. The bug has
2424 been fixed by making things happen in the correct order.
2425
2426
2427Exim version 4.40
2428-----------------
2429
2430 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2431 before the connection was closed, thus losing the rejection response.
2432
2433 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2434 some early Solaris releases, but causes trouble in current releases where
2435 socklen_t is defined.
2436
2437 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2438 always exist.
2439
2440 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2441 configured.
2442
2443 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2444 that releasing the top of it at the end releases what was used for sub-
2445 expansions (unless the block got too big). However, discard this block if
2446 the first thing is a variable or header, so that we can use its block when
2447 it is dynamic (useful for very large $message_headers, for example).
2448
2449 6. Lookups now cache *every* query, not just the most recent. A new, separate
2450 store pool is used for this. It can be recovered when all lookup caches are
2451 flushed. Lookups now release memory at the end of their result strings.
2452 This has involved some general refactoring of the lookup sources.
2453
2454 7. Some code has been added to the store_xxx() functions to reduce the amount
2455 of flapping under certain conditions.
2456
2457 8. log_incoming_interface used to affect only the <= reception log lines. Now
2458 it causes the local interface and port to be added to several more SMTP log
2459 lines, for example "SMTP connection from", and rejection lines.
2460
2461 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2462
246310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2464
246511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2466 could be overwritten at the end of the current message (or the start of a
2467 new message if it was set in a HELO ACL). The value is now preserved for
2468 the duration of the SMTP connection.
2469
247012. If a transport had a headers_rewrite setting, and a matching header line
2471 contained an unqualified address, that address was qualified, even if it
2472 did not match any rewriting rules. The underlying bug was that the values
2473 of the flags that permit the existence of unqualified sender and recipient
2474 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2475 non-local messages, and by -bnq for local messages) were not being
2476 preserved with the message after it was received.
2477
247813. When Exim was logging an SMTP synchronization error, it could sometimes log
2479 "next input=" as part of the text comprising the host identity instead of
2480 the correct text. The code was using the same buffer for two different
2481 strings. However, depending on which order the printing function evaluated
2482 its arguments, the bug did not always show up. Under Linux, for example, my
2483 test suite worked just fine.
2484
248514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2486 doesn't work with some older versions of Perl. It has been changed to "my",
2487 which in any case is probably the better facility to use.
2488
248915. A really picky compiler found some instances of statements for creating
2490 error messages that either had too many or two few arguments for the format
2491 string.
2492
249316. The size of the buffer for calls to the DNS resolver has been increased
2494 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2495 for addresses that have a lot of PTR records. This alleviates a problem; it
2496 does not fully solve it.
2497
249817. A dnsdb lookup for PTR records that receives more data than will fit in the
2499 buffer now truncates the list and logs the incident, which is the same
2500 action as happens when Exim is looking up a host name and its aliases.
2501 Previously in this situation something unpredictable would happen;
2502 sometimes it was "internal error: store_reset failed".
2503
250418. If a server dropped the connection unexpectedly when an Exim client was
2505 using GnuTLS and trying to read a response, the client delivery process
2506 crashed while trying to generate an error log message.
2507
250819. If a "warn" verb in an ACL added multiple headers to a message in a single
2509 string, for example:
2510
2511 warn message = H1: something\nH2: something
2512
2513 the text was added as a single header line from Exim's point of view
2514 though it ended up OK in the delivered message. However, searching for the
2515 second and subsequent header lines using $h_h2: did not work. This has been
2516 fixed. Similarly, if a system filter added multiple headers in this way,
2517 the routers could not see them.
2518
251920. Expanded the error message when iplsearch is called with an invalid key to
2520 suggest using net-iplsearch in a host list.
2521
252221. When running tests using -bh, any delays imposed by "delay" modifiers in
2523 ACLs are no longer actually imposed (and a message to that effect is
2524 output).
2525
252622. If a "gecos" field in a passwd entry contained escaped characters, in
2527 particular, if it contained a \" sequence, Exim got it wrong when building
2528 a From: or a Sender: header from that name. A second bug also caused
2529 incorrect handling when an unquoted " was present following a character
2530 that needed quoting.
2531
253223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2533 was not being matched caselessly.
2534
253524. Arranged for all hyphens in the exim.8 source to be escaped with
2536 backslashes.
2537
253825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2539 properly. Recipient callout cache records were still being keyed to include
2540 the sender, even when use_sender was set false. This led to far more
2541 callouts that were necessary. The sender is no longer included in the key
2542 when use_sender is false.
2543
254426. Added "control = submission" modifier to ACLs.
2545
254627. Added the ${base62d: operator to decode base 62 numbers.
2547
254828. dnsdb lookups can now access SRV records.
2549
255029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2551 the configuration file.
2552
255330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2554 (-v) mode. This makes the output for a verbose queue run more intelligible.
2555
255631. Added a use_postmaster feature to recipient callouts.
2557
255832. Added the $body_zerocount variable, containing the number of binary zero
2559 bytes in the message body.
2560
256133. The time of last modification of the "new" subdirectory is now used as the
2562 "mailbox time last read" when there is a quota error for a maildir
2563 delivery.
2564
256534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2566
256735. Added +ignore_unknown as a special item in host lists.
2568
256936. Code for decoding IPv6 addresses in host lists is now included, even if
2570 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2571 address was recognized as an IP address, but was then not correctly decoded
2572 into binary, causing unexpected and incorrect effects when compared with
2573 another IP address.
2574
2575
2576Exim version 4.34
2577-----------------
2578
2579 1. Very minor rewording of debugging text in manualroute to say "list of
2580 hosts" instead of "hostlist".
2581
2582 2. If verify=header_syntax was set, and a header line with an unqualified
2583 address (no domain) and a large number of spaces between the end of the
2584 name and the colon was received, the reception process suffered a buffer
2585 overflow, and (when I tested it) crashed. This was caused by some obsolete
2586 code that should have been removed. The fix is to remove it!
2587
2588 3. When running in the test harness, delay a bit after writing a bounce
2589 message to get a bit more predictability in the log output.
2590
2591 4. Added a call to search_tidyup() just before forking a reception process. In
2592 theory, someone could use a lookup in the expansion of smtp_accept_max_
2593 per_host which, without the tidyup, could leave open a database connection.
2594
2595 5. Added the variables $recipient_data and $sender_data which get set from a
2596 lookup success in an ACL "recipients" or "senders" condition, or a router
2597 "senders" option, similar to $domain_data and $local_part_data.
2598
2599 6. Moved the writing of debug_print from before to after the "senders" test
2600 for routers.
2601
2602 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2603 problems for message scanning, either using a data ACL, or using
2604 local_scan() because the Received: header was not generated till after they
2605 were called (in order to set the time as the time of reception completion).
2606 I have revised the way this works. The header is now generated after the
2607 body is received, but before the ACL or local_scan() are called. After they
2608 are run, the timestamp in the header is updated.
2609
2610
2611Exim version 4.33
2612-----------------
2613
2614 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2615 before starting a queue runner without re-exec. This happened only when
2616 deliver_drop_privilege was set or when the Exim user was set to root. The
2617 effect of the bug was that timeouts during subsequent deliveries caused
2618 crashes instead of being properly handled. The handler is now left at its
2619 default (and expected) setting.
2620
2621 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2622 message, again when deliver_drop_privilege is set or Exim is run as root.
2623 The bug described in (1) was not present in this case, but the tidying up
2624 of the other signals was missing. I have made the two cases consistent.
2625
2626 3. The ignore_target_hosts setting on a manualroute router was being ignored
2627 for hosts that were looked up using the /MX notation.
2628
2629 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2630 in domain lists.
2631
2632 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2633 operated on the sender address. After changing the $sender_address to <>
2634 for the sender address verify, Exim was re-instated it as the original
2635 (before rewriting) address, but remembering that it had rewritten it, so it
2636 wasn't rewriting it again. This bug also had the effect of breaking the
2637 sender address verification caching when the sender address was rewritten.
2638
2639 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2640 This has been changed so that if the ip literal address matches
2641 ignore_target_hosts, the router declines.
2642
2643 7. Added expansion conditions match_domain, match_address, and match_local_
2644 part (NOT match_host).
2645
2646 8. The placeholder for the Received: header didn't have a length field set.
2647
2648 9. Added code to Exim itself and to exim_lock to test for a specific race
2649 condition that could lead to file corruption when using MBX delivery. The
2650 issue is with the lockfile that is created in /tmp. If this file is removed
2651 after a process has opened it but before that process has acquired a lock,
2652 there is the potential for a second process to recreate the file and also
2653 acquire a lock. This could lead to two Exim processes writing to the file
2654 at the same time. The added code performs the same test as UW imapd; it
2655 checks after acquiring the lock that its file descriptor still refers to
2656 the same named file.
2657
265810. The buffer for building added header lines was of fixed size, 8192 bytes.
2659 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2660 when Exim is built.
2661
266211. Added the smtp_active_hostname option. If used, this will typically be made
2663 to depend on the incoming interface address. Because $interface_address is
2664 not set up until the daemon has forked a reception process, error responses
2665 that can happen earlier (such as "too many connections") no longer contain
2666 a host name.
2667
266812. If an expansion in a condition on a "warn" statement fails because a lookup
2669 defers, the "warn" statement is abandoned, and the next ACL statement is
2670 processed. Previously this caused the whole ACL to be aborted.
2671
267213. Added the iplsearch lookup type.
2673
267414. Added ident_timeout as a log selector.
2675
267615. Added tls_certificate_verified as a log selector.
2677
267816. Added a global option tls_require_ciphers (compare the smtp transport
2679 option of the same name). This controls incoming TLS connections.
2680
268117. I finally figured out how to make tls_require_ciphers do a similar thing
2682 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2683 before starting the TLS session.
2684
268518. Tabs are now shown as \t in -bP output.
2686
268719. If the log selector return_path_on_delivery was set, Exim crashed when
2688 bouncing a message because it had too many Received: header lines.
2689
269020. If two routers both had headers_remove settings, and the first one included
2691 a superfluous trailing colon, the final name in the first list and the
2692 first name in the second list were incorrectly joined into one item (with a
2693 colon in the middle).
2694
2695
2696Exim version 4.32
2697-----------------
2698
2699 1. Added -C and -D options to the exinext utility, mainly to make it easier
2700 to include in the automated testing, but these could be helpful when
2701 multiple configurations are in use.
2702
2703 2. The exinext utility was not formatting the output nicely when there was
2704 an alternate port involved in the retry record key, nor when there was a
2705 message id as well (for retries that were specific to a specific message
2706 and a specific host). It was also confused by IPv6 addresses, because of
2707 the additional colons they contain. I have fixed the IPv4 problem, and
2708 patched it up to do a reasonable job for IPv6.
2709
2710 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2711 delivery, the log line now contains "pipelined" if PIPELINING was used.
2712
2713 4. An SMTP transport process used to panic and die if the bind() call to set
2714 an explicit outgoing interface failed. This has been changed; it is now
2715 treated in the same way as a connect() failure.
2716
2717 5. A reference to $sender_host_name in the part of a conditional expansion
2718 that was being skipped was still causing a DNS lookup. This no longer
2719 occurs.
2720
2721 6. The def: expansion condition was not recognizing references to header lines
2722 that used bh_ and bheader_.
2723
2724 7. Added the _cache feature to named lists.
2725
2726 8. The code for checking quota_filecount in the appendfile transport was
2727 allowing one more file than it should have been.
2728
2729 9. For compatibility with Sendmail, the command line option
2730
2731 -prval:sval
2732
2733 is equivalent to
2734
2735 -oMr rval -oMs sval
2736
2737 and sets the incoming protocol and host name (for trusted callers). The
2738 host name and its colon can be omitted when only the protocol is to be set.
2739 Note the Exim already has two private options, -pd and -ps, that refer to
2740 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2741 "s", but I don't think that's a major issue.
2742
274310. A number of refactoring changes to the code, none of which should affect
2744 Exim's behaviour:
2745
2746 (a) The number of logging options was getting close to filling up the
2747 32-bit word that was used as a bit map. I have split them into two classes:
2748 those that are passed in the argument to log_write(), and those that are
2749 only ever tested independently outside of that function. These are now in
2750 separate 32-bit words, so there is plenty of room for expansion again.
2751 There is no change in the user interface or the logging behaviour.
2752
2753 (b) When building, for example, log lines, the code previously used a
2754 macro that called string_cat() twice, in order to add two strings. This is
2755 not really sufficiently general. Furthermore, there was one instance where
2756 it was actually wrong because one of the argument was used twice, and in
2757 one call a function was used. (As it happened, calling the function twice
2758 did not affect the overall behaviour.) The macro has been replaced by a
2759 function that can join an arbitrary number of extra strings onto a growing
2760 string.
2761
2762 (c) The code for expansion conditions now uses a table and a binary chop
2763 instead of a serial search (which was left over from when there were very
2764 few conditions). Also, it now recognizes conditions like "pam" even when
2765 the relevant support is not compiled in: a suitably worded error message is
2766 given if an attempt is made to use such a condition.
2767
276811. Added ${time_interval:xxxxx}.
2769
277012. A bug was causing one of the ddress fields not to be passed back correctly
2771 from remote delivery subprocesses. The field in question was not being
2772 subsequently used, so this caused to problems in practice.
2773
277413. Added new log selectors queue_time and deliver_time.
2775
277614. Might have fixed a bug in maildirsizefile handling that threw up
2777 "unexpected character" debug warnings, and recalculated the data
2778 unnecessarily. In any case, I expanded the warning message to give more
2779 information.
2780
278115. Added the message "Restricted characters in address" to the statements in
2782 the default ACL that block characters like @ and % in local parts.
2783
278416. Change 71 for release 4.31 proved to be much less benign that I imagined.
2785 Three changes have been made:
2786
2787 (a) There was a serious bug; a negative response to MAIL caused the whole
2788 recipient domain to be cached as invalid, thereby blocking all messages
2789 to all local parts at the same domain, from all senders. This bug has
2790 been fixed. The domain is no longer cached after a negative response to
2791 MAIL if the sender used is not empty.
2792
2793 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2794 been restored.
2795
2796 (c) A new callout option, "use_sender" has been added for people who want
2797 the modified behaviour.
2798
2799
2800Exim version 4.31
2801-----------------
2802
2803 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2804 Larry Rosenman.
2805
2806 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2807 indeed breaks things for older releases.
2808
2809 3. Added additional logging to the case where there is a problem reading data
2810 from a filter that is running in a subprocess using a pipe, in order to
2811 try to track down a specific problem.
2812
2813 4. Testing facility fudge: when running in the test harness and attempting
2814 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2815 getting "No route to host". Convert this to a timeout.
2816
2817 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2818 warning.
2819
2820 6. Some OS don't have socklen_t but use size_t instead. This affects the
2821 fifth argument of getsockopt() amongst other things. This is now
2822 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2823 can be set for individual OS. I have set it for SunOS5, OSF1, and
2824 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2825 some earlier ones do not.
2826
2827 7. Change 4.30/15 was not doing the test caselessly.
2828
2829 8. The standard form for an IPv6 address literal was being rejected by address
2830 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2831 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2832 this, as well as the form without the "IPv6" on the front (but only when
2833 address literals are enabled, of course).
2834
2835 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2836
283710. Exim crashed if a message with an empty sender address specified by -f
2838 encountered a router with an errors_to setting. This could be provoked only
2839 by a command such as
2840
2841 exim -f "" ...
2842
2843 where an empty string was supplied; "<>" did not hit this bug.
2844
284511. Installed PCRE release 4.5.
2846
284712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2848 remained set. It is now erased.
2849
285013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2851 times from message ids (which are base 36 rather than the normal 62).
2852
285314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2854 were being counted as actual protocol errors, and logged if the log
2855 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2856 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2857 and DATA following a set of rejected RCPTs do not count as protocol errors.
2858 In other words, Exim assumes they were pipelined, though this may not
2859 actually be the case. Of course, in all cases the client gets an
2860 appropriate error code.
2861
286215. If a lookup fails in an ACL condition, a message about the failure may
2863 be available; it is used if testing the ACL cannot continue, because most
2864 such messages specify what the cause of the deferral is. However, some
2865 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2866 that caused an old message to be retained and used if a later statement
2867 caused a defer, replacing the real cause of the deferral.
2868
286916. If an IP address had so many PTR records that the DNS lookup buffer
2870 was not large enough to hold them, Exim could crash while trying to process
2871 the truncated data. It now detects and logs this case.
2872
287317. Further to 4.21/58, another change has been made: if (and only if) the
2874 first line of a message (the first header line) ends with CRLF, a bare LF
2875 in a subsequent header line has a space inserted after it, so as not to
2876 terminate the header.
2877
287818. Refactoring: tidied an ugly bit of code in appendfile that copied data
2879 unnecessarily, used atoi() instead of strtol(), and didn't check the
2880 termination when getting file sizes from file names by regex.
2881
288219. Completely re-implemented the support for maildirsize files, in the light
2883 of a number of problems with the previous contributed implementation
2884 (4.30/29). In particular:
2885
2886 . If the quota is zero, the maildirsize file is maintained, but no quota is
2887 imposed.
2888
2889 . If the maildir directory does not exist, it is created before any attempt
2890 to write a maildirsize file.
2891
2892 . The quota value in the file is just a cache; if the quota is changed in
2893 the transport, the new value overrides.
2894
2895 . A regular expression is available for excluding directories from the
2896 count.
2897
289820. The autoreply transport checks the characters in options that define the
2899 message's headers; it allows continued headers, but it was checking with
2900 isspace() after an embedded newline instead of explicitly looking for a
2901 space or a tab.
2902
290321. If all the "regular" hosts to which an address was routed had passed their
2904 expiry times, and had not reached their retry times, the address was
2905 bounced, even if fallback hosts were defined. Now Exim should go on to try
2906 the fallback hosts.
2907
290822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2909 equivalent code in the SMTP transport. Some hosts send humungous responses
2910 to HELO/EHLO, more than 1024 it seems.
2911
291223. Refactoring: code in filter.c used (void *) for "any old type" but this
2913 gives compiler warnings in some environments. I've now done it "properly",
2914 using a union.
2915
291624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2917 (because of problems with the built-in one) was declared to return uschar *
2918 instead of char *, causing compiler failure.
2919
292025. Fixed a file descriptor leak when processing alias/forward files.
2921
292226. Fixed a minor format string issue in dbfn.c.
2923
292427. Typo in exim.c: ("dmbnz" for "dbmnz").
2925
292628. If a filter file refered to $h_xxx or $message_headers, and the headers
2927 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2928 become corrupted.
2929
293029. When a sender address is verified, it is cached, to save repeating the test
2931 when there is more than one recipient in a message. However, when the
2932 verification involves a callout, it is possible for different callout
2933 options to be set for different recipients. It is too complicated to keep
2934 track of this in the cache, so now Exim always runs a verification when a
2935 callout is required, relying on the callout cache for the optimization.
2936 The overhead is duplication of the address routing, but this should not be
2937 too great.
2938
293930. Fixed a bug in callout caching. If a RCPT command caused the sender address
2940 to be verified with callout=postmaster, and the main callout worked but the
2941 postmaster check failed, the verification correctly failed. However, if a
2942 subsequent RCPT command asked for sender verification *without* the
2943 postmaster check, incorrect caching caused this verification also to fail,
2944 incorrectly.
2945
294631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2947 it was not caching the DNS options (qualify_single, search_parents) that
2948 were used when the lookup failed. A subsequent lookup with different
2949 options therefore always gave the same answer, though there were cases
2950 where it should not have. (Example: a "domains = !$mx_any" option on a
2951 dnslookup router: the "domains" option is always processed without any
2952 widening, but the router might have qualify_single set.) Now Exim uses the
2953 cached value only when the same options are set.
2954
295532. Added John Jetmore's "exipick" utility to the distribution.
2956
295733. GnuTLS: When an attempt to start a TLS session fails for any reason other
2958 than a timeout (e.g. a certificate is required, and is not provided), an
2959 Exim server now closes the connection immediately. Previously it waited for
2960 the client to close - but if the client is SSL, it seems that they each
2961 wait for each other, leading to a delay before one of them times out.
2962
296334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2964 maintained 0.8.x compatibility because I don't think many are using it, and
2965 it is clearly obsolete.
2966
296735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2968 transport.
2969
297036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2971 client certificate was expired. A simple patch fixes this, though I don't
2972 understand the full logic of why the verify callback is called multiple
2973 times.
2974
297537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2976 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2977 which causes problems with some clients (such as the Certicom SSL Plus
2978 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2979 disables the coutermeasure allowing Eudora to connect."
2980
298138. Exim was not checking that a write() to a log file succeeded. This could
2982 lead to Bad Things if a log got too big, in particular if it hit a file
2983 size limit. Exim now panics and dies if it cannot write to a log file, just
2984 as it does if it cannot open a log file.
2985
298639. Modified OS/Makefile-Linux so that it now contains
2987
2988 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2989
2990 The two -D definitions ensure that Exim is compiled with large file
2991 support, which makes it possible to handle log files that are bigger than
2992 2^31.
2993
299440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2995 instance) a domain was checked against a named list that involved a lookup,
2996 causing $domain_data to be set, then another domain was checked against the
2997 same list, then the first domain was re-checked, the value of $domain_data
2998 after the final check could be wrong. In particular, if the second check
2999 failed, it could be set empty. This bug probably also applied to
3000 $localpart_data.
3001
300241. The strip_trailing_dot option was not being applied to the address given
3003 with the -f command-line option.
3004
300542. The code for reading a message's header from the spool was incrementing
3006 $received_count, but never initializing it. This meant that the value was
3007 incorrect (doubled) while delivering a message in the same process in which
3008 it was received. In the most common configuration of Exim, this never
3009 happens - a fresh exec is done - but it can happen when
3010 deliver_drop_privilege is set.
3011
301243. When Exim logs an SMTP synchronization error - client data sent too soon -
3013 it now includes up to 150 characters of the unexpected data in the log
3014 line.
3015
301644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3017 and building data strings. The size of both of these buffers was 10 000
3018 bytes - far larger than anybody would *ever* want, thought I. Needless to
3019 say, somebody hit the limit. I have increased the maximum line length to
3020 20 000 and the maximum data length of concatenated lines to 100 000. I have
3021 also fixed two bugs, because there was no checking on these buffers. Tsk,
3022 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3023 buffer is too small.
3024
302545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3026 lsearch lookups. Now it does.
3027
302846. When parsing a route_list item in a manualroute router, a fixed-length
3029 buffer was used for the list of hosts. I made this 1024 bytes long,
3030 thinking that nobody would ever have a list of hosts that long. Wrong.
3031 Somebody had a whole pile of complicated expansion conditions, and the
3032 string was silently truncated, leading to an expansion error. It turns out
3033 that it is easier to change to an unlimited length (owing to other changes
3034 that have happened since this code was originally written) than to build
3035 structure for giving a limitation error. The length of the item that
3036 expands into the list of hosts is now unlimited.
3037
303847. The lsearch lookup could not handle data where the length of text line was
3039 more than 4095 characters. Such lines were truncated, leading to shortened
3040 data being returned. It should now handle lines of any length.
3041
304248. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3043 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3044 ACL").
3045
304649. Cosmetic tidy to scripts like exicyclog that are generated by globally
3047 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3048 no longer happens in comment lines. A list of replacements is now placed
3049 at the head of all of the source files, except those whose only change is
3050 to replace PERL_COMMAND in the very first #! line.
3051
305250. Replaced the slow insertion sort in queue.c, for sorting the list of
3053 messages on the queue, with a bottom-up merge sort, using code contributed
3054 by Michael Haardt. This should make operations like -bp somewhat faster on
3055 large queues. It won't affect queue runners, except when queue_run_in_order
3056 is set.
3057
305851. Installed eximstats 1.31 in the distribution.
3059
306052. Added support for SRV lookups to the dnslookup router.
3061
306253. If an ACL referred to $message_body or $message_body_end, the value was not
3063 reset for any messages that followed in the same SMTP session.
3064
306554. The store-handling optimization for building very long strings was not
3066 differentiating between the different store pools. I don't think this
3067 actually made any difference in practice, but I've tidied it.
3068
306955. While running the routers to verify a sender address, $sender_address
3070 was still set to the sender address. This is wrong, because when routing to
3071 send a bounce to the sender, it would be empty. Therefore, I have changed
3072 it so that, while verifying a sender address, $sender_address is set to <>.
3073 (There is no change to what happens when verifying a recipient address.)
3074
307556. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3076 target A or AAAA records (if not already returned) without resetting the
3077 qualify_single or search_parents options of the DNS resolver. These are
3078 inappropriate in this case because the targets of MX and SRV records must
3079 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3080 target that, when qualified, matched something in the local domain. These
3081 two options are now turned off when doing these lookups.
3082
308357. It seems that at least some releases of Reiserfs (which does not have the
3084 concept of a fixed number of inodes) returns zero and not -1 for the
3085 number of available inodes. This interacted badly with check_spool_inodes,
3086 which assumed that -1 was the "no such thing" setting. What I have done is
3087 to check that the total number of inodes is greater than zero before doing
3088 the test of how many are available.
3089
309058. When a "warn" ACL statement has a log_message modifier, the message is
3091 remembered, and not repeated. This is to avoid a lot of repetition when a
3092 message has many recipients that cause the same warning to be written.
3093 Howewer, Exim was preserving the list of already written lines for an
3094 entire SMTP session, which doesn't seem right. The memory is now reset if a
3095 new message is started.
3096
309759. The "rewrite" debugging flag was not showing the result of rewriting in the
3098 debugging output unless log_rewrite was also set.
3099
310060. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3101 of (int)(handle) when we know that handle contains (void *)(-1).
3102
310361. The Exim daemon panic-logs an error return when it closes the incoming
3104 connection. However "connection reset by peer" seems to be common, and
3105 isn't really an error worthy of noting specially, so that particular error
3106 is no long logged.
3107
310862. When Exim is trying to find all the local interfaces, it used to panic and
3109 die if the ioctl to get the interface flags failed. However, it seems that
3110 on at least one OS (Solaris 9) it is possible to have an interface that is
3111 included in the list of interfaces, but for which you get a failure error
3112 for this call. This happens when the interface is not "plumbed" into a
3113 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3114 failure of the "get flags" call assumes that the interface is down.
3115
311663. Added a ${eval10: operator, which assumes all numbers are decimal. This
3117 makes life easier for people who are doing arithmetic on fields extracted
3118 from dates, where you often get leading zeros that should not be
3119 interpreted as octal.
3120
312164. Added qualify_domain to the redirect router, to override the global
3122 setting.
3123
312465. If a pathologically long header line contained very many addresses (the
3125 report of this problem mentioned 10 000) and each of them was rewritten,
3126 Exim could use up a very large amount of memory. (It kept on making new
3127 copies of the header line as it rewrote, and never released the old ones.)
3128 At the expense of a bit more processing, the header rewriting function has
3129 been changed so that it no longer eats memory in this way.
3130
313166. The generation of the Received: header has been moved from the time that a
3132 message starts to be received, to the time that it finishes. The timestamp
3133 in the Received: header should now be very close to that of the <= log
3134 line. There are two side-effects of this change:
3135
3136 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3137 logged header lines no longer include the local Received: line, because
3138 it has not yet been created. The same applies to a copy of the message
3139 that is returned to a non-SMTP sender when a message is rejected.
3140
3141 (b) When a filter file is tested using -bf, no additional Received: header
3142 is added to the test message. After some thought, I decided that this
3143 is a bug fix.
3144
3145 This change does not affect the value of $received_for. It is still set
3146 after address rewriting, but before local_scan() is called.
3147
314867. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3149
315068. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3151 gave an unhelpful panic error message, and a defer error. I have managed to
3152 change this behaviour so that it now rejects any supplied certificate,
3153 which seems right, as the list of acceptable certificates is empty.
3154
315569. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3156 gave an unhelpful defer error. I have not managed to make this reject any
3157 supplied certificates, but the error message it gives is "no certificate
3158 supplied", which is not helpful.
3159
316070. exigrep's output now also includes lines that are not associated with any
3161 message, but which match the given pattern. Implemented by a patch from
3162 Martin Sluka, which also tidied up the Perl a bit.
3163
316471. Recipient callout verification, like sender verification, was using <> in
3165 the MAIL FROM command. This isn't really the right thing, since the actual
3166 sender may affect whether the remote host accepts the recipient or not. I
3167 have changed it to use the actual sender in the callout; this means that
3168 the cache record is now keyed on a recipient/sender pair, not just the
3169 recipient address. There doesn't seem to be a real danger of callout loops,
3170 since a callout by the remote host to check the sender would use <>.
3171 [SEE ABOVE: changed after hitting problems.]
3172
317372. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3174 temporary errors. However, in the case of such a code being given after
3175 the end of a data transmission (i.e. after ".") Exim was failing to write
3176 a retry record for the message. (Yes, there was some broken host that was
3177 actually sending 8xx at this point.)
3178
317973. An unknown lookup type in a host list could cause Exim to panic-die when
3180 the list was checked. (An example that provoked this was putting <; in the
3181 middle of a list instead of at the start.) If this happened during a DATA
3182 ACL check, a -D file could be left lying around. This kind of configuration
3183 error no longer causes Exim to die; instead it causes a defer errror. The
3184 incident is still logged to the main and panic logs.
3185
318674. Buglet left over from Exim 3 conversion. The message "too many messages
3187 in one connection" was written to the rejectlog but not the mainlog, except
3188 when address rewriting (yes!) was being logged.
3189
319075. Added write_rejectlog option.
3191
319276. When a system filter was run not as root (that is, when system_filter_user
3193 was set), the values of the $n variables were not being returned to the
3194 main process; thus, they were not subsequently available in the $sn
3195 variables.
3196
319777. Added +return_path_on_delivery log selector.
3198
319978. A connection timeout was being treated differently from recipients deferred
3200 when testing hosts_max_try with a message that was older than the host's
3201 retry timeout. (The host should not be counted, thus allowing all hosts to
3202 be tried at least once before bouncing.) This may have been the cause of an
3203 occasionally reported bug whereby a message would remain on the queue
3204 longer than the retry timeout, but would be bounced if a delivery was
3205 forced. I say "may" because I never totally pinned down the problem;
3206 setting up timeout/retry tests is difficult. See also the next item.
3207
320879. The ultimate address timeout was not being applied to errors that involved
3209 a combination of host plus message (for example, a timeout on a MAIL
3210 command). When an address resolved to a number of possible hosts, and they
3211 were not all tried for each delivery (e.g. because of hosts_max_try), a
3212 message could remain on the queue longer than the retry timeout.
3213
321480. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3215 Haardt.
3216
321781. Fixed an obscure SMTP outgoing bug which required at least the following
3218 conditions: (a) there was another message waiting for the same server;
3219 (b) the server returned 5xx to all RCPT commands in the first message so
3220 that the message was not completed; (c) the server dropped the connection
3221 or gave a negative response to the RSET that Exim sends to abort the
3222 transaction. The observed case was a dropped connection after DATA that had
3223 been sent in pipelining mode. That is, the server had advertised PIPELINING
3224 but was not implementing it correctly. The effect of the bug was incorrect
3225 behaviour, such as trying another host, and this could lead to a crash.
3226
3227
3228Exim version 4.30
3229-----------------
3230
3231 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3232 and daemon.c were passed as pointers to ints; they should have been
3233 pointers to socklen_t variables (which are typically unsigned ints).
3234
3235 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3236 fixed.
3237
3238 3. Fixed a really odd bug that affected only the testing scheme; patching a
3239 certain fixed string in the binary changed the value of another string that
3240 happened to be identical to the end of the original first string.
3241
3242 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3243 name", it returns that address as the IP address. On some operating
3244 systems (e.g. Solaris), it also passes back the IP address string as the
3245 "host name". However, on others (e.g. Linux), it passes back an empty
3246 string. Exim wasn't checking for this, and was changing the host name to an
3247 empty string, assuming it had been canonicized.
3248
3249 5. Although rare, it is permitted to have more than one PTR record for a given
3250 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3251 all the names associated with an address, because they do in Solaris.
3252 However, it seems that they do not in Linux for data that comes from the
3253 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3254 I found this out when I moved to a new Linux workstation and tried to run
3255 the Exim test suite.
3256
3257 To get round this problem I have changed the code so that it now does its
3258 own call to the DNS to look up PTR records when searching for a host name.
3259 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3260 addresses that are only in /etc/hosts are still found.
3261
3262 This behaviour is, however, controlled by an option called host_lookup_
3263 order, which defaults to "bydns:byaddr". If people want to use the other
3264 order, or indeed, just use one or the other means of lookup, they can
3265 specify it in this variable.
3266
3267 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3268 some operating systems, this comes back from gethostbyaddr() as an empty
3269 string, and this is what Exim used to test for. However, it seems that in
3270 other systems, "." is yielded. Exim now tests for this case too.
3271
3272 7. The values of check_spool_space and check_log_space are now held internally
3273 as a number of kilobytes instead of an absolute number of bytes. If a
3274 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3275 kilobyte. This means that much larger values can be stored.
3276
3277 8. Exim monitor: an attempt to get the action menu when not actually pointing
3278 at a message produces an empty menu entitled "No message selected". This
3279 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3280 no entries in it ("Shell widget menu has zero width and/or height"). So I
3281 have added a single, blank menu entry in this case.
3282
3283 9. Added ${quote_local_part.
3284
328510. MIME decoding is now applied to the contents of Subject: header lines when
3286 they are logged.
3287
328811. Now that a reference to $sender_host_address automatically causes a reverse
3289 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3290 host lookup before query-style lookups in lists that might use this
3291 variable. This has therefore been abolished, and the "net-" prefix is no
3292 longer necessary for query-style lookups.
3293
329412. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3295 have been a typo for LFLAGS, so it has been changed.
3296
329713. The install script calls Exim with "-C /dev/null" in order to find the
3298 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3299 to be output. Howeve, since Exim outputs its version number before the
3300 error, it didn't break the script. It just looked ugly. I fixed this by
3301 always allowing "-C /dev/null" if the caller is root.
3302
330314. Ignore overlarge ACL variable number when reading spool file - insurance
3304 against a later release with more variables having written the file.
3305
330615. The standard form for an IPv6 address literal was being rejected by EHLO.
3307 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3308 this, as well as the form without the "IPv6" on the front.
3309
331016. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3311 OS/Makefile-Darwin file.
3312
331317. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3314 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3315
331618. After change 4.21/52, "%ld" was used to format the contents of the $inode
3317 variable. However, some OS use ints for inodes. I've added cast to long int
3318 to get rid of the compiler warning.
3319
332019. I had forgotten to lock out "/../" in configuration file names when
3321 ALT_CONFIG_PREFIX was set.
3322
332320. Routers used for verification do not need to specify transports. However,
3324 if such a router generated a host list, and callout was configured, Exim
3325 crashed, because it could not find a port number from the (non-existent)
3326 transport. It now assumes port 25 in this circumstance.
3327
332821. Added the -t option to exigrep.
3329
333022. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3331 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3332 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3333 them is set, LOOKUP_LSEARCH is forced.
3334
333523. "exim -bV" now outputs a list of lookups that are included in the binary.
3336
333724. Added sender and host information to the "rejected by local_scan()" log
3338 line; previously there was no indication of these.
3339
334025. Added .include_if_exists.
3341
334226. Change 3.952/11 added an explicit directory sync on top of a file sync for
3343 Linux. It turns out that not all file systems support this. Apparently some
3344 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3345 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3346 not supported on the file descriptor, is now ignored when Exim is trying to
3347 sync a directory. This applies only to Linux.
3348
334927. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3350
335128. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3352 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3353 this.
3354
335529. Added support for maildirsize files from supplied patch (modified a bit).
3356
335730. The use of :fail: followed by an empty string could lead Exim to respond to
3358 sender verification failures with (e.g.):
3359
3360 550 Verification failed for <xxx>
3361 550 Sender verify failed
3362
3363 where the first response line was missing the '-' that indicates it is not
3364 the final line of the response.
3365
336631. The loop for finding the name of the user that called Exim had a hardwired
3367 limit of 10; it now uses the value of finduser_retries, which is used for
3368 all other user lookups.
3369
337032. Added $received_count variable, available in data and not_smtp ACLs, and at
3371 delivery time.
3372
337333. Exim was neglecting to zero errno before one call of strtol() when
3374 expanding a string and expecting an integer value. On some systems this
3375 resulted in spurious "integer overflow" errors. Also, it was casting the
3376 result into an int without checking.
3377
337834. Testing for a connection timeout using "timeout_connect" in the retry rules
3379 did not work. The code looks as if it has *never* worked, though it appears
3380 to have been documented since at least releast 1.62. I have made it work.
3381
338235. The "timeout_DNS" error in retry rules, also documented since at least
3383 1.62, also never worked. As it isn't clear exactly what this means, and
3384 clearly it isn't a major issue, I have abolished the feature by treating it
3385 as "timeout", and writing a warning to the main and panic logs.
3386
338736. The display of retry rules for -brt wasn't always showing the error code
3388 correctly.
3389
339037. Added new error conditions to retry rules: timeout_A, timeout_MX,
3391 timeout_connect_A, timeout_connect_MX.
3392
339338. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3394 to the empty sender.
3395
339639. The daemon was not analysing the content of -oX till after it had closed
3397 stderr and disconnected from the controlling terminal. This meant that any
3398 syntax errors were only noted on the panic log, and the return code from
3399 the command was 0. By re-arranging the code a little, I've made the
3400 decoding happen first, so such errors now appear on stderr, and the return
3401 code is 1. However, the actual setting up of the sockets still happens in
3402 the disconnected process, so errors there are still only recorded on the
3403 panic log.
3404
340540. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3406 connections (as happens on some IP stacks) was logged at start up time as
3407 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3408 it from "IPv6 and IPv4", which means that two separate sockets are being
3409 used.
3410
341141. The debug output for gethostbyname2() or getipnodebyname() failures now
3412 says whether AF_INET or AF_INET6 was passed as an argument.
3413
341442. Exiwhat output was messed up when time zones were included in log
3415 timestamps.
3416
341743. Exiwhat now gives more information about the daemon's listening ports,
3418 and whether -tls-on-connect was used.
3419
342044. The "port" option of the smtp transport is now expanded.
3421
342245. A "message" modifier in a "warn" statement in a non-message ACL was being
3423 silently ignored. Now an error message is written to the main and panic
3424 logs.
3425
342646. There's a new ACL modifier called "logwrite" which writes to a log file
3427 as soon as it is encountered.
3428
342947. Added $local_user_uid and $local_user_gid at routing time.
3430
343148. Exim crashed when trying to verify a sender address that was being
3432 rewritten to "<>".
3433
343449. Exim was recognizing only a space character after ".include". It now also
3435 recognizes a tab character.
3436
343750. Fixed several bugs in the Perl script that creates the exim.8 man page by
3438 extracting the relevant information from the specification. The man page no
3439 longer contains scrambled data for the -d option, and I've added a section
3440 at the front about calling Exim under different names.
3441
344251. Added "extra_headers" argument to the "mail" command in filter files.
3443
344452. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3445 crash.
3446
344753. Installed eximstats 1.29.
3448
344954. Added transport_filter_timeout as a generic transport option.
3450
345155. Exim no longer adds an empty Bcc: header to messages that have no To: or
3452 Cc: header lines. This was required by RFC 822, but it not required by RFC
3453 2822.
3454
345556. Exim used to add From:, Date:, and Message-Id: header lines to any
3456 incoming messages that did not have them. Now it does so only if the
3457 message originates locally, that is, if there is no associated remote host
3458 address. When Resent- header lines are present, this applies to the Resent-
3459 lines rather than the non-Resent- lines.
3460
346157. Drop incoming SMTP connection after too many syntax or protocol errors. The
3462 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3463
346458. Messages for configuration errors now include the name of the main
3465 configuration file - useful now that there may be more than one file in a
3466 list (.included file names were always shown).
3467
346859. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3469 for those rare installations that do not start the daemon as root or run it
3470 setuid root. I've cut out the call to initgroups() if the daemon is not
3471 root at that time.
3472
347360. The Exim user and group can now be bound into the binary as text strings
3474 that are looked up at the start of Exim's processing.
3475
347661. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3477
347862. Added $mailstore_basename variable.
3479
348063. Installed patch to sieve.c from Michael Haardt.
3481
348264. When Exim failed to open the panic log after failing to open the main log,
3483 the original message it was trying to log was written to stderr and debug
3484 output, but if they were not available (the usual case in production), it
3485 was lost. Now it is written to syslog before the two lines that record the
3486 failures to open the logs.
3487
348865. Users' Exim filters run in subprocesses under the user's uid. It is
3489 possible for a "deliver" command or an alias in a "personal" command to
3490 provoke an address rewrite. If logging of address rewriting is configured,
3491 this fails because the process is not running as root or exim. There may be
3492 a better way of dealing with this, but for the moment (because 4.30 needs
3493 to be released), I have disabled address rewrite logging when running a
3494 filter in a non-root, non-exim process.
3495
3496
3497Exim version 4.24
3498-----------------
3499
3500 1. The buildconfig auxiliary program wasn't quoting the value set for
3501 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3502 not defined. This bug was masked in 4.22 by the effect that was fixed in
3503 change 4.23/1.
3504
3505 2. Some messages that were rejected after a message id was allocated were
3506 shown as "incomplete" by exigrep. It no longer does this for messages that
3507 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3508
3509 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3510 have allow_domain_literals set, the ID did not get logged in the <= line.
3511 Domain literals are now always recognized in Message-ID: header lines.
3512
3513 4. The first argument for a ${extract expansion item is the key name or field
3514 number. Leading and trailing spaces in this item were not being ignored,
3515 causing some misleading effects.
3516
3517 5. When deliver_drop_privilege was set, single queue runner processes started
3518 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3519 same command in the process it spins off) were not dropping privilege.
3520
3521 6. When the daemon running as "exim" started a queue runner, it always
3522 re-executed Exim in the spun-off process. This is a waste of effort when
3523 deliver_drop_privilege is set. The new process now just calls the
3524 queue-runner function directly.
3525
3526
3527Exim version 4.23
3528-----------------
3529
3530 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3531 HEADERS_CHARSET.
3532
3533 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3534 ignored. Though the use of -oP was forcing the writing of a pid file, it
3535 was always written to the default place.
3536
3537 3. If the message "no IP address found for host xxxx" is generated during
3538 incoming verification, it is now followed by identification of the incoming
3539 connection (so you can more easily find what provoked it).
3540
3541 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3542
3543 5. Added some features to "harden" Exim a bit more against certain attacks:
3544
3545 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3546 be put in Local/Makefile. This is like the never_users runtime option,
3547 but it cannot be overridden. The default setting is "root".
3548
3549 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3550 prefix string with which any file named in a -C command line option
3551 must start.
3552
3553 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3554 is retained for -C and -D only if the caller of Exim is root. Without
3555 it, the exim user may also use -C and -D and retain privilege.
3556
3557 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3558 command line option is disabled.
3559
3560 6. Macro names set by the -D option must start with an upper case letter, just
3561 like macro names defined in the configuration file.
3562
3563 7. Added "dereference=" facility to LDAP.
3564
3565 8. Two instances of the typo "uknown" in the source files are fixed.
3566
3567 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3568 the Configure-Makefile script screwed up while processing it.
3569
357010. Incorporated PCRE 4.4.
3571
357211. The SMTP synchronization check was not operating right at the start of an
3573 SMTP session. For example, it could not catch a HELO sent before the client
3574 waited for the greeting. There is now a check for outstanding input at the
3575 point when the greeting is written. Because of the duplex, asynchronous
3576 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3577 way, but not yet received, when the check is performed.
3578
357912. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3580 on TCP/IP sockets, because this apparently causes some broken clients to
3581 timeout.
3582
358313. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3584 unchanged) from the Cygwin maintainer.
3585
358614. The code for -bV that shows what is in the binary showed "mbx" when maildir
3587 was supported instead of testing for mbx. Effectively a typo.
3588
358915. The spa authenticator server code was not checking that the input it
3590 received was valid base64.
3591
359216. The debug output line for the "set" modifier in ACLs was not showing the
3593 name of the variable that was being set.
3594
359517. Code tidy: the variable type "vtype_string" was never used. Removed it.
3596
359718. Previously, a reference to $sender_host_name did not cause a DNS reverse
3598 lookup on its own. Something else was needed to trigger the lookup. For
3599 example, a match in host_lookup or the need for a host name in a host list.
3600 Now, if $sender_host_name is referenced and the host name has not yet been
3601 looked up, a lookup is performed. If the lookup fails, the variable remains
3602 empty, and $host_lookup_failed is set to "1".
3603
360419. Added "eqi" as a case-independent comparison operator.
3605
360620. The saslauthd authentication condition could segfault if neither service
3607 nor realm was specified.
3608
360921. If an overflowing value such as "2048M" was set for message_size_limit, the
3610 error message that was logged was misleading, and incoming SMTP
3611 connections were dropped. The message is now more accurate, and temporary
3612 errors are given to SMTP connections.
3613
361422. In some error situations (such as 21 above) Exim rejects all SMTP commands
3615 (except RSET) with a 421 error, until QUIT is received. However, it was
3616 failing to send a response to QUIT.
3617
361823. The HELO ACL was being run before the code for helo_try_verify_hosts,
3619 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3620 ACL is now run after the helo_try_verify_hosts code.
3621
362224. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3623 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3624 case-independent, so other case variants are also recognized). Apparently
3625 some systems use these upper case variants.
3626
362725. If more than two messages were waiting for the same host, and a transport
3628 filter was specified for the transport, Exim sent two messages over the
3629 same TCP/IP connection, and then failed with "socket operation on non-
3630 socket" when it tried to send the third.
3631
363226. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3633
363427. The extern definition of crypt16() in expand.c was not being excluded when