Minor fixes to the dovecot authenticator. Fixes: #646
[exim.git] / doc / doc-txt / ChangeLog
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deafd5b3 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.538 2008/01/18 12:23:26 nm4 Exp $
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
210f147e
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6Exim version 4.70
7-----------------
8
9NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
10 When building exim an external PCRE library is now needed -
11 PCRE is a system library on the majority of modern systems.
12 See entry on PCRE_LIBS in EDITME file.
13
deafd5b3
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14NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
15 conversation. Added nologin parameter to request.
16 Patch contributed by Kirill Miazine
17
18
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19Exim version 4.69
20-----------------
21
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22TK/01 Add preliminary DKIM support. Currently requires a forked version of
23 ALT-N's libdkim that I have put here:
24 http://duncanthrax.net/exim-experimental/
25
26 Note to Michael Haardt: I had to rename some vars in sieve.c. They
27 were called 'true' and it seems that C99 defines that as a reserved
28 keyword to be used with 'bool' variable types. That means you could
29 not include C99-style headers which use bools without triggering
30 build errors in sieve.c.
31
81ea09ca
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32NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
33 as mailq or other aliases. Changed the --help handling significantly
34 to do whats expected. exim_usage() emits usage/help information.
35
f13cddcb
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36SC/01 Added the -bylocaldomain option to eximstats.
37
8ad076b2
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38NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
39
a843aaa6
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40NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
41
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42NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall)
43
44
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45Exim version 4.68
46-----------------
47
48PH/01 Another patch from the Sieve maintainer.
49
6a3bceb1
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50PH/02 When an IPv6 address is converted to a string for single-key lookup
51 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
52 dots are used instead of colons so that keys in lsearch files need not
53 contain colons. This was done some time before quoting was made available
54 in lsearch files. However, iplsearch files do require colons in IPv6 keys
55 (notated using the quote facility) so as to distinguish them from IPv4
56 keys. This meant that lookups for IP addresses in host lists did not work
57 for iplsearch lookups.
58
59 This has been fixed by arranging for IPv6 addresses to be expressed with
60 colons if the lookup type is iplsearch. This is not incompatible, because
61 previously such lookups could never work.
62
63 The situation is now rather anomolous, since one *can* have colons in
64 ordinary lsearch keys. However, making the change in all cases is
65 incompatible and would probably break a number of configurations.
66
2e30fa9d
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67TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
68 version.
69
0806a9c5
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70MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
71 conversion specification without a maximum field width, thereby enabling
72 a rogue spamd server to cause a buffer overflow. While nobody in their
73 right mind would setup Exim to query an untrusted spamd server, an
74 attacker that gains access to a server running spamd could potentially
75 exploit this vulnerability to run arbitrary code as the Exim user.
76
ae276964
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77TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
78 $primary_hostname instead of what libspf2 thinks the hosts name is.
79
0f2cbd1b
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80MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
81 a directory entry by the name of the lookup key. Previously, if a
82 symlink pointed to a non-existing file or a file in a directory that
83 Exim lacked permissions to read, a lookup for a key matching that
84 symlink would fail. Now it is enough that a matching directory entry
85 exists, symlink or not. (Bugzilla 503.)
86
2b85bce7
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87PH/03 The body_linecount and body_zerocount variables are now exported in the
88 local_scan API.
89
93655c46
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90PH/04 Added the $dnslist_matched variable.
91
6c512171
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92PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
93 This means they are set thereafter only if the connection becomes
94 encrypted.
95
96PH/06 Added the client_condition to authenticators so that some can be skipped
97 by clients under certain conditions.
98
aa6dc513
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99PH/07 The error message for a badly-placed control=no_multiline_responses left
100 "_responses" off the end of the name.
101
a96603a0
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102PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
103
8f240103
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104PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
105 (without spaces) instead of just copying the configuration text.
106
107PH/10 Added the /noupdate option to the ratelimit ACL condition.
108
d677b2f2
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109PH/11 Added $max_received_linelength.
110
d52120f2
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111PH/12 Added +ignore_defer and +include_defer to host lists.
112
64f2600a
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113PH/13 Installed PCRE version 7.2. This needed some changes because of the new
114 way in which PCRE > 7.0 is built.
115
8669f003
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116PH/14 Implemented queue_only_load_latch.
117
a4dc33a8
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118PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
119 MAIL command. The effect was to mangle the value on 64-bit systems.
120
d6a60c0f
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121PH/16 Another patch from the Sieve maintainer.
122
8f128379
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123PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
124
8932dffe
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125PH/18 If a system quota error occurred while trying to create the file for
126 a maildir delivery, the message "Mailbox is full" was not appended to the
127 bounce if the delivery eventually timed out. Change 4.67/27 below applied
128 only to a quota excession during the actual writing of the file.
d6a60c0f 129
ddea74fa 130PH/19 It seems that peer DN values may contain newlines (and other non-printing
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131 characters?) which causes problems in log lines. The DN values are now
132 passed through string_printing() before being added to log lines.
133
ddea74fa 134PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
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135 and InterBase are left for another time.)
136
ddea74fa
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137PH/21 Added message_body_newlines option.
138
ce9f225c
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139PH/22 Guard against possible overflow in moan_check_errorcopy().
140
19897d52
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141PH/23 POSIX allows open() to be a macro; guard against that.
142
bc64a74d
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143PH/24 If the recipient of an error message contained an @ in the local part
144 (suitably quoted, of course), incorrect values were put in $domain and
145 $local_part during the evaluation of errors_copy.
146
eb4c0de6 147
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148Exim version 4.67
149-----------------
150
22ad45c9
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151MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
152 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
153 Jan Srzednicki.
154
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155PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
156 issue a MAIL command.
157
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158PH/02 In an ACL statement such as
159
160 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
161
162 if a client was not listed at all, or was listed with a value other than
163 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
164 the condition was not true (as it should be), so access was not denied.
165 The bug was that the ! inversion was incorrectly passed on to the second
166 item. This has been fixed.
167
168PH/03 Added additional dnslists conditions == and =& which are different from
169 = and & when the dns lookup returns more than one IP address.
170
83da1223
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171PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
172 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
173
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174PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
175 FSYNC, which compiles an option called disable_fsync that allows for
176 bypassing fsync(). The documentation is heavily laced with warnings.
177
34c5e8dd
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178SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
179
bbe15da8
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180PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
181 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
182 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
183 including adding "make clean"; (3) Added -fPIC when compiling the test
184 dynamically loaded module, to get rid of a warning.
185
0e8a9471
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186MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
187 message fails, move_frozen_messages = true and ignore_bounce_errors_after
188 = 0s. The bug is otherwise harmless.
189
f0872424
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190PH/07 There was a bug in the dovecot authenticator such that the value of
191 $auth1 could be overwritten, and so not correctly preserved, after a
192 successful authentication. This usually meant that the value preserved by
193 the server_setid option was incorrect.
194
b01dd148
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195PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
196
6bf342e1
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197PH/09 Installed PCRE release 7.0.
198
273f34d0
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199PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
200 run for batched SMTP input. It is now run at the start of every message
201 in the batch. While fixing this I discovered that the process information
202 (output by running exiwhat) was not always getting set for -bs and -bS
203 input. This is fixed, and it now also says "batched" for BSMTP.
204
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205PH/11 Added control=no_pipelining.
206
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207PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
208 patch, slightly modified), and move the expansion of helo_data till after
209 the connection is made in the smtp transport (so it can use these
210 values).
211
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212PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
213
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214PH/14 Added log_selector = +pid.
215
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216PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
217
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218PH/16 Add ${if forany and ${if forall.
219
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220PH/17 Added dsn_from option to vary the From: line in DSNs.
221
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222PH/18 Flush SMTP output before performing a callout, unless control =
223 no_callout_flush is set.
224
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225PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
226 was true (the default) a successful delivery failed to delete the retry
227 item, thus causing premature timeout of the address. The bug is now
228 fixed.
229
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230PH/20 Added hosts_avoid_pipelining to the smtp transport.
231
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232PH/21 Long custom messages for fakedefer and fakereject are now split up
233 into multiline reponses in the same way that messages for "deny" and
234 other ACL rejections are.
235
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236PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
237 with slight modification.
238
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239PH/23 Applied sieve patches from the maintainer "tracking the latest notify
240 draft, changing the syntax and factoring some duplicate code".
241
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242PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
243 for deliveries of the second and subsequent messages over the same SMTP
244 connection.
245
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246PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
247 ${reduce, with only minor "tidies".
248
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249SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
250
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251PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
252 expansion side effects.
253
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254PH/27 When a message times out after an over-quota error from an Exim-imposed
255 quota, the bounce message says "mailbox is full". This message was not
256 being given when it was a system quota that was exceeded. It now should
257 be the same.
258
0e20aff9
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259MH/03 Made $recipients available in local_scan(). local_scan() already has
260 better access to the recipient list through recipients_list[], but
261 $recipients can be useful in postmaster-provided expansion strings.
262
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263PH/28 The $smtp_command and $smtp_command_argument variables were not correct
264 in the case of a MAIL command with additional options following the
265 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
266 were accidentally chopped off.
267
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268PH/29 SMTP synchronization checks are implemented when a command is read -
269 there is a check that no more input is waiting when there shouldn't be
270 any. However, for some commands, a delay in an ACL can mean that it is
271 some time before the response is written. In this time, more input might
272 arrive, invalidly. So now there are extra checks after an ACL has run for
273 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
274 pipelining has not been advertised.
275
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276PH/30 MH's patch to allow iscntrl() characters to be list separators.
277
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278PH/31 Unlike :fail:, a custom message specified with :defer: was not being
279 returned in the SMTP response when smtp_return_error_details was false.
280 This has been fixed.
281
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282PH/32 Change the Dovecot authenticator to use read() and write() on the socket
283 instead of the C I/O that was originally supplied, because problems were
284 reported on Solaris.
285
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286PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
287 Exim which did not show up earlier: it was assuming that a call to
288 SSL_CTX_set_info_callback() might give an error value. In fact, there is
289 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
290 was a macro that became an assignment, so it seemed to work. This has
291 changed to a proper function call with a void return, hence the compile
292 error. Exim's code has been fixed.
293
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294PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
295 cpus.
296
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297PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
298
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299PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
300
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301PH/37 If a message is not accepted after it has had an id assigned (e.g.
302 because it turns out to be too big or there is a timeout) there is no
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303 "Completed" line in the log. When some messages of this type were
304 selected by exigrep, they were listed as "not completed". Others were
305 picked up by some special patterns. I have improved the selection
306 criteria to be more general.
79749a79 307
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308PH/38 The host_find_failed option in the manualroute router can now be set
309 to "ignore", to completely ignore a host whose IP address cannot be
310 found. If all hosts are ignored, the behaviour is controlled by the new
311 host_all_ignored option.
312
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313PH/39 In a list of hosts for manualroute, if one item (either because of multi-
314 homing or because of multiple MX records with /mx) generated more than
315 one IP address, and the following item turned out to be the local host,
316 all the secondary addresses of the first item were incorrectly removed
317 from the list, along with the local host and any following hosts (which
318 is what is supposed to happen).
319
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320PH/40 When Exim receives a message, it writes the login name, uid, and gid of
321 whoever called Exim into the -H file. In the case of the daemon it was
322 behaving confusingly. When first started, it used values for whoever
323 started the daemon, but after a SIGHUP it used the Exim user (because it
324 calls itself on a restart). I have changed the code so that it now always
325 uses the Exim user.
326
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327PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
328 message are rejected with the same error (e.g. no authentication or bad
329 sender address), and a DATA command is nevertheless sent (as can happen
330 with PIPELINING or a stupid MUA), the error message that was given to the
331 RCPT commands is included in the rejection of the DATA command. This is
332 intended to be helpful for MUAs that show only the final error to their
333 users.
334
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335PH/42 Another patch from the Sieve maintainer.
336
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337SC/02 Eximstats - Differentiate between permanent and temporary rejects.
338 Eximstats - Fixed some broken HTML links and added missing column headers
339 (Jez Hancock).
340 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
341 columns for Rejects, Temp Rejects, Ham, and Spam rows.
342
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343SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
344
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345PH/43 Yet another patch from the Sieve maintainer.
346
58eb016e 347PH/44 I found a way to check for a TCP/IP connection going away before sending
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348 the response to the final '.' that terminates a message, but only in the
349 case where the client has not sent further data following the '.'
350 (unfortunately, this is allowed). However, in many cases there won't be
351 any further data because there won't be any more messages to send. A call
352 to select() can be used: if it shows that the input is "ready", there is
353 either input waiting, or the socket has been closed. An attempt to read
354 the next input character can distinguish the two cases. Previously, Exim
58eb016e 355 would have sent an OK response which the client would never have see.
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356 This could lead to message repetition. This fix should cure that, at
357 least in a lot of common cases.
58eb016e 358
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359PH/45 Do not advertise STARTTLS in response to HELP unless it would be
360 advertised in response to EHLO.
361
b4ed4da0 362
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363Exim version 4.66
364-----------------
365
366PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
367 fixed by 4.65/MH/01 (is this a record?) are fixed:
368
369 (i) An empty string was always treated as zero by the numeric comparison
370 operators. This behaviour has been restored.
371
372 (ii) It is documented that the numeric comparison operators always treat
373 their arguments as decimal numbers. This was broken in that numbers
374 starting with 0 were being interpreted as octal.
375
376 While fixing these problems I realized that there was another issue that
377 hadn't been noticed. Values of message_size_limit (both the global option
378 and the transport option) were treated as octal if they started with 0.
379 The documentation was vague. These values are now always treated as
380 decimal, and I will make that clear in the documentation.
381
382
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383Exim version 4.65
384-----------------
385
386TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
387 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
388 versions. (#438)
389
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390MH/01 Don't check that the operands of numeric comparison operators are
391 integers when their expansion is in "skipping" mode (fixes bug
392 introduced by 4.64-PH/07).
393
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394PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
395 child addresses, Exim now panics and dies. Previously, because the count
396 is held in a short int, deliveries were likely to be lost. As such a
397 large number of recipients for a single message is ridiculous
398 (performance will be very, very poor), I have chosen to impose a limit
399 rather than extend the field.
400
93cfa765 401
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402Exim version 4.64
403-----------------
aa41d2de 404
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405TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
406 leftover -K file (the existence of which was triggered by #402).
407 While we were at it, introduced process PID as part of the -K
408 filename. This should rule out race conditions when creating
409 these files.
410
411TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
412 processing considerably. Previous code took too long for large mails,
413 triggering a timeout which in turn triggers #401.
414
415TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
416 in the DK code in transports.c. sendfile() is not really portable,
417 hence the _LINUX specificness.
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418
419TF/01 In the add_headers option to the mail command in an Exim filter,
420 there was a bug that Exim would claim a syntax error in any
421 header after the first one which had an odd number of characters
422 in the field name.
423
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424PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
425 callout verification, Exim cached a "reject" for the entire domain. This
426 is correct for most verifications, but it is not correct for a recipient
427 verification with use_sender or use_postmaster set, because in that case
428 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
429 case of MAIL FROM:<> rejection from other early rejections (e.g.
430 rejection of HELO). When verifying a recipient using a non-null MAIL
431 address, the cache is ignored if it shows MAIL FROM:<> rejection.
432 Whatever the result of the callout, the value of the domain cache is
433 left unchanged (for any other kind of callout, getting as far as trying
434 RCPT means that the domain itself is ok).
435
1f872c80
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436PH/02 Tidied a number of unused variable and signed/unsigned warnings that
437 gcc 4.1.1 threw up.
438
439PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
440 manifest itself as EPIPE rather than ECONNECT. When tidying away a
441 session, the daemon ignores ECONNECT errors and logs others; it now
442 ignores EPIPE as well.
443
d203e649
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444PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
445 (quoted-printable decoding).
446
cc2ed8f7 447PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 448 later the small subsequent patch to fix an introduced bug.
f951fd57 449
ddfcd446
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450PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
451
d45b1de8
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452PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
453
454PH/08 An error is now given if message_size_limit is specified negative.
455
38a0a95f 456PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 457 to be given (somewhat) arbitrary names.
38a0a95f 458
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459JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
460 in 4.64-PH/09.
461
462JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
463 miscellaneous code fixes
464
6ea85e9a
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465PH/10 Added the log_reject_target ACL modifier to specify where to log
466 rejections.
467
26da7e20
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468PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
469 hostname. This is wrong, because it relates to the incoming message (and
470 probably the interface on which it is arriving) and not to the outgoing
471 callout (which could be using a different interface). This has been
472 changed to use the value of the helo_data option from the smtp transport
473 instead - this is what is used when a message is actually being sent. If
474 there is no remote transport (possible with a router that sets up host
475 addresses), $smtp_active_hostname is used.
6ea85e9a 476
14aa5a05 477PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 478 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
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479 (a) The code assumed that strncpy() returns a negative number on buffer
480 overflow, which isn't the case. Replaced with Exim's string_format()
481 function.
482 (b) There were several signed/unsigned issues. I just did the minimum
483 hacking in of casts. There is scope for a larger refactoring.
484 (c) The code used strcasecmp() which is not a standard C function.
485 Replaced with Exim's strcmpic() function.
486 (d) The code set only $1; it now sets $auth1 as well.
487 (e) A simple test gave the error "authentication client didn't specify
488 service in request". It would seem that Dovecot has changed its
489 interface. Fortunately there's a specification; I followed it and
490 changed what the client sends and it appears to be working now.
491
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492PH/13 Added $message_headers_raw to provide the headers without RFC 2047
493 decoding.
494
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495PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
496 address A is aliased to B and C, where B exists and C does not. Without
497 -v the output is "A verified" because verification stops after a
498 successful redirection if more than one address is generated. However,
499 with -v the child addresses are also verified. Exim was outputting "A
500 failed to verify" and then showing the successful verification for C,
501 with its parentage. It now outputs "B failed to verify", showing B's
502 parentage before showing the successful verification of C.
503
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PH
504PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
505 look up a TXT record in a specific list after matching in a combined
506 list.
507
322050c2
PH
508PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
509 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
510 they consult the DNS. I had assumed they would set it the way they
511 wanted; and indeed my experiments on Linux seem to show that in some
512 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
513 To be on the safe side, however, I have now made the interface to
514 host_find_byname() similar to host_find_bydns(), with an argument
515 containing the DNS resolver options. The host_find_byname() function now
516 sets these options at its start, just as host_find_bydns() does. The smtp
517 transport options dns_qualify_single and dns_search_parents are passed to
518 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
519 of host_find_byname() use the default settings of RES_DEFNAMES
520 (qualify_single) but not RES_DNSRCH (search_parents).
521
08955dd3
PH
522PH/17 Applied (a modified version of) Nico Erfurth's patch to make
523 spool_read_header() do less string testing, by means of a preliminary
524 switch on the second character of optional "-foo" lines. (This is
525 overdue, caused by the large number of possibilities that now exist.
526 Originally there were few.) While I was there, I also converted the
527 str(n)cmp tests so they don't re-test the leading "-" and the first
528 character, in the hope this might squeeze out yet more improvement.
529
1eccaa59
PH
530PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
531 flag allowing group syntax was set by the header_syntax check but not
532 turned off, possible causing trouble later; (2) The flag was not being
533 set at all for the header_verify test, causing "group"-style headers to
534 be rejected. I have now set it in this case, and also caused header_
535 verify to ignore an empty address taken from a group. While doing this, I
536 came across some other cases where the code for allowing group syntax
537 while scanning a header line wasn't quite right (mostly, not resetting
538 the flag correctly in the right place). These bugs could have caused
539 trouble for malformed header lines. I hope it is now all correct.
540
602e59e5
PH
541PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
542 with the "reply" argument non-NULL. The code, however (which originally
543 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
544 but it didn't always do it. This confused somebody who was copying the
545 code for some other use. I have removed all the tests.
546
411ef850
PH
547PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
548 feature that was used to support insecure browsers during the U.S. crypto
549 embargo. It requires special client support, and Exim is probably the
550 only MTA that supported it -- and would never use it because real RSA is
551 always available. This code has been removed, because it had the bad
552 effect of slowing Exim down by computing (never used) parameters for the
553 RSA_EXPORT functionality.
554
7befa435
PH
555PH/21 On the advice of Timo Sirainen, added a check to the dovecot
556 authenticator to fail if there's a tab character in the incoming data
557 (there should never be unless someone is messing about, as it's supposed
558 to be base64-encoded). Also added, on Timo's advice, the "secured" option
559 if the connection is using TLS or if the remote IP is the same as the
560 local IP, and the "valid-client-cert option" if a client certificate has
561 been verified.
562
48da4259 563PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
564 authenticators. This can be used for authorization after authentication
565 succeeds. (In the case of plaintext, it servers for both authentication
566 and authorization.)
567
48da4259
PH
568PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
569 if any retry times were supplied.
570
d1d5595c
PH
571PH/24 Exim crashed if verify=helo was activated during an incoming -bs
572 connection, where there is no client IP address to check. In this
573 situation, the verify now always succeeds.
574
0ef732d9
PH
575PH/25 Applied John Jetmore's -Mset patch.
576
328895cc
PH
577PH/26 Added -bem to be like -Mset, but loading a message from a file.
578
fd700877
PH
579PH/27 In a string expansion for a processed (not raw) header when multiple
580 headers of the same name were present, leading whitespace was being
581 removed from all of them, but trailing whitespace was being removed only
582 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
583 before concatenation. Completely empty headers in a concatenation (as
584 before) are ignored.
fd700877 585
8dce1a6f
PH
586PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
587 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
588
17af4a17
PH
589PH/29 [Removed. This was a change that I later backed out, and forgot to
590 correct the ChangeLog entry (that I had efficiently created) before
591 committing the later change.]
f6c332bd
PH
592
593PH/30 Exim was sometimes attempting to deliver messages that had suffered
594 address errors (4xx response to RCPT) over the same connection as other
595 messages routed to the same hosts. Such deliveries are always "forced",
596 so retry times are not inspected. This resulted in far too many retries
597 for the affected addresses. The effect occurred only when there were more
598 hosts than the hosts_max_try setting in the smtp transport when it had
599 the 4xx errors. Those hosts that it had tried were not added to the list
600 of hosts for which the message was waiting, so if all were tried, there
601 was no problem. Two fixes have been applied:
602
603 (i) If there are any address or message errors in an SMTP delivery, none
604 of the hosts (tried or untried) are now added to the list of hosts
605 for which the message is waiting, so the message should not be a
606 candidate for sending over the same connection that was used for a
607 successful delivery of some other message. This seems entirely
608 reasonable: after all the message is NOT "waiting for some host".
609 This is so "obvious" that I'm not sure why it wasn't done
610 previously. Hope I haven't missed anything, but it can't do any
611 harm, as the worst effect is to miss an optimization.
612
613 (ii) If, despite (i), such a delivery is accidentally attempted, the
614 routing retry time is respected, so at least it doesn't keep
615 hammering the server.
616
c1114884
PH
617PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
618 in ${readsocket because some servers need this prod.
619
7a0743eb
PH
620PH/32 Added some extra debug output when updating a wait-xxx database.
621
0d85fa3f
PH
622PH/33 The hint "could be header name not terminated by colon", which has been
623 given for certain expansion errors for a long time, was not being given
624 for the ${if def:h_colon_omitted{... case.
625
1bf43b78
PH
626PH/34 The spec says: "With one important exception, whenever a domain list is
627 being scanned, $domain contains the subject domain." There was at least
628 one case where this was not true.
629
520de300
PH
630PH/35 The error "getsockname() failed: connection reset by peer" was being
631 written to the panic log as well as the main log, but it isn't really
632 panic-worthy as it just means the connection died rather early on. I have
633 removed the panic log writing for the ECONNRESET error when getsockname()
634 fails.
635
48c7f9e2
PH
636PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
637 runs only) independently of the message's sender address. This meant
638 that, if the 4xx error was in fact related to the sender, a different
639 message to the same recipient with a different sender could confuse
640 things. In particualar, this can happen when sending to a greylisting
641 server, but other circumstances could also provoke similar problems.
642 I have changed the default so that the retry time for these errors is now
643 based a combination of the sender and recipient addresses. This change
644 can be overridden by setting address_retry_include_sender=false in the
645 smtp transport.
646
99ea1c86
PH
647PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
648 remote server are returned as part of bounce messages. This was not
649 happening for LMTP over a pipe (the lmtp transport), but now it is the
650 same for both kinds of LMTP.
651
a2042e78
PH
652PH/38 Despite being documented as not happening, Exim was rewriting addresses
653 in header lines that were in fact CNAMEs. This is no longer the case.
654
4fbcfc2e
PH
655PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
656 and queue runs started by the daemon processed all messages. This has
657 been fixed so that -R and -S can now usefully be given with -q<time>.
658
aa41d2de
PH
659PH/40 Import PCRE release 6.7 (fixes some bugs).
660
af561417
PH
661PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
662
3cc66b45
PH
663PH/42 Give an error if -q is specified more than once.
664
194cc0e4
PH
665PH/43 Renamed the variables $interface_address and $interface_port as
666 $received_ip_address and $received_port, to make it clear that these
667 values apply to message reception, and not to the outgoing interface when
668 a message is delivered. (The old names remain recognized, of course.)
669
a401ddaa
PH
670PH/44 There was no timeout on the connect() call when using a Unix domain
671 socket in the ${readsocket expansion. There now is.
672
4e88a19f
PH
673PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
674 be meaningful with "accept".
675
d7d7b289
SC
676SC/01 Eximstats V1.43
677 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
678
679SC/02 Eximstats V1.44
680 Use a glob alias rather than an array ref in the generated
681 parser. This improves both readability and performance.
682
683SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
684 Collect SpamAssassin and rejection statistics.
685 Don't display local sender or destination tables unless
686 there is data to show.
687 Added average volumes into the top table text output.
688
689SC/04 Eximstats V1.46
690 Collect data on the number of addresses (recipients)
691 as well as the number of messages.
692
693SC/05 Eximstats V1.47
694 Added 'Message too big' to the list of mail rejection
695 reasons (thanks to Marco Gaiarin).
696
697SC/06 Eximstats V1.48
698 Mainlog lines which have GMT offsets and are too short to
699 have a flag are now skipped.
700
701SC/07 Eximstats V1.49 (Alain Williams)
702 Added the -emptyok flag.
703
704SC/08 Eximstats V1.50
705 Fixes for obtaining the IP address from reject messages.
706
0ea2a468
JJ
707JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
708 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
709 whitesspace changes from 4.64-PH/27
710
711JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
712 match 4.64-PH/13
713
714JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
715 are found, allow negative numbers in numeric criteria)
716
717JJ/06 exipick.20061117.2, added new $message_body_missing variable
718
719JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
720 to match changes made in 4.64-PH/43
721
8a10f5a4
PH
722PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
723
30e18802
PH
724PH/47 Put in an explicit test for a DNS lookup of an address record where the
725 "domain" is actually an IP address, and force a failure. This locks out
726 those revolvers/nameservers that support "A-for-A" lookups, in
727 contravention of the specifications.
728
55728a4f
PH
729PH/48 When a host name was looked up from an IP address, and the subsequent
730 forward lookup of the name timed out, the host name was left in
731 $sender_host_name, contrary to the specification.
d7d7b289 732
d7837193
PH
733PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
734 restricted to single-key lookups, Exim was not diagnosing an error if
735 * or *@ was used with a query-style lookup.
736
87054a31
PH
737PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
738
ea2c01d2
MH
739MH/01 local_scan ABI version incremented to 1.1. It should have been updated
740 long ago, but noone interested enough thought of it. Let's just say that
741 the "1.1" means that there are some new functions that weren't there at
742 some point in the past.
743
e4fa6968
PH
744PH/51 Error processing for expansion failure of helo_data from an smtp
745 transport during callout processing was broken.
746
56f5d9bd
PH
747PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
748 tested/used via the -bh/-bhc/-bs options.
749
922e1c28
PH
750PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
751 bug, fixed in subsequent PCRE releases).
752
21eb6e72
PH
753PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
754 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
755
a0540757
PH
756PH/55 Check for a ridiculously long file name in exim_dbmbuild.
757
944e9e9c 758
478be7b0
SC
759Exim version 4.63
760-----------------
761
762SC/01 Use a glob alias rather than an array ref in eximstats generated
763 parser. This improves both readability and performance.
764
765SC/02 Collect SpamAssassin and rejection statistics in eximstats.
766 Don't display local sender or destination tables in eximstats unless
767 there is data to show.
768 Added average volumes into the eximstats top table text output.
769
770SC/03 Collect data on the number of addresses (recipients) as well
771 as the number of messages in eximstats.
772
2b965a65
TF
773TF/01 Correct an error in the documentation for the redirect router. Exim
774 does (usually) call initgroups() when daemonizing.
478be7b0 775
45b91596
PH
776TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
777 with consistent privilege compared to when running as a daemon.
478be7b0 778
c59f5781
TF
779TF/03 Note in the spec that $authenticated_id is not set for local
780 submissions from trusted users.
781
90fc3069
TF
782TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
783 Thanks to Dean Brooks <dean@iglou.com> for the patch.
784
6083aca0
TF
785TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
786 by adding some example configuration directives to the default
787 configuration file. A little bit of work is required to uncomment the
788 directives and define how usernames and passwords are checked, but
789 there is now a framework to start from.
790
765b530f
PH
791PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
792 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
793 without this. I don't know how relevant this is to other LDAP libraries.
794
4e167a8c
PH
795PH/02 Add the verb name to the "unknown ACL verb" error.
796
4608d683
PH
797PH/03 Magnus Holmgren's patch for filter_prepend_home.
798
b8dc3e4a
PH
799PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
800
5418e93b
PH
801PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
802 directory not expanded when it should be if an expanded home directory
803 was set for the address (which is overridden by the transport).
804
b4a9bda2
PH
805PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
806 libradius.
807
45b91596
PH
808PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
809 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
810 because it is too late at that time, and has no effect.
811
5547e2c5
PH
812PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
813 security issue with \' (bugzilla #107). I could not use the
814 PQescapeStringConn() function, because it needs a PGconn value as one of
815 its arguments.
816
dbcef0ea
PH
817PH/08 When testing addresses using -bt, indicate those final addresses that
818 are duplicates that would not cause an additional delivery. At least one
819 person was confused, thinking that -bt output corresponded to deliveries.
820 (Suppressing duplicates isn't a good idea as you lose the information
821 about possibly different redirections that led to the duplicates.)
822
25257489
PH
823PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
824 systems where poll() doesn't work, in particular OS X.
825
c816d124
PH
826PH/10 Added more information to debugging output for retry time not reached.
827
a9ccd69a
PH
828PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
829 operations in malware.c.
830
75fa1910
PH
831PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
832 signatures.
833
a7d7aa58
PH
834PH/13 If write_rejectlog was set false when logging was sent to syslog with
835 syslog_duplication set false, log lines that would normally be written
836 both the the main log and to the reject log were not written to syslog at
837 all.
838
42119b09
PH
839PH/14 In the default configuration, change the use of "message" in ACL warn
840 statements to "add_header".
841
41609df5
PH
842PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
843 not followed by a command (e.g. "seen endif").
844
a5bd321b
PH
845PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
846 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
847 latter.
848
e85a7ad5 849PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
850 so that it is now:
851
e85a7ad5
PH
852 ${if or { \
853 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
854 { match{$h_precedence:}{(?i)bulk|list|junk} } \
855 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
856 }{no}{yes}}
857
e85a7ad5
PH
858 The Auto-Submitted: and various List- headers are standardised, whereas I
859 don't think Precedence: ever was.
5dff5817 860
d8fe1c03
PH
861PH/18 Refactored debugging code in route_finduser() to show more information,
862 in particular, the error code if getpwnam() issues one.
863
16282d2b
PH
864PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
865 This is apparently needed in addition to the PH/07 change above to avoid
866 any possible encoding problems.
867
35d40a98
PH
868PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
869 but not after initializing Perl.
870
034d99ab
PH
871PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
872 output them only if debugging. By default they are written stderr,
873 apparently, which is not desirable.
874
6ec97b1b
PH
875PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
876 queries.
877
e22ca4ac
JJ
878JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
879 --not options
880
881JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
882
33d73e3b
PH
883PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
884 authenticated or an ident call has been made. Suppress the default
885 values for $authenticated_id and $authenticated_sender (but permit -oMai
886 and -oMas) when testing with -bh.
887
9ecb03f3
PH
888PH/24 Re-jigged the order of the tests in the default configuration so that the
889 tests for valid domains and recipients precede the DNS black list and CSA
890 tests, on the grounds that those ones are more expensive.
891
084efe8d
PH
892PH/25 Exim was not testing for a space following SMTP commands such as EHLO
893 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
894 This bug exists in every version of Exim that I still have, right back to
895 0.12.
896
366fc9f0
PH
897PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
898 However, an attempt to turn on case-sensitivity in a regex key by
899 including (?-i) didn't work because the subject string was already
900 lowercased, and the effects were non-intuitive. It turns out that a
901 one-line patch can be used to allow (?-i) to work as expected.
902
c59f5781 903
c887c79e
TF
904Exim version 4.62
905-----------------
906
907TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
908 other effects) broke the use of negated acl sub-conditions.
909
1cce3af8
PH
910PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
911 patch).
912
afb3eaaf
PH
913PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
914 "Deny" causes Exim to reject the incoming connection with a 554 error.
915 Unfortunately, if there is a major crisis, such as a disk failure,
916 tcp-wrappers gives "deny", whereas what one would like would be some
917 kind of temporary error. A kludge has been added to help with this.
918 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
919 554 error is used if errno is still zero or contains ENOENT (which occurs
920 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
921 451 error is used.
922
e173618b
PH
923PH/03 Add -lutil to the default FreeBSD LIBS setting.
924
dd16e114
PH
925PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
926 errors. Otherwise a message that provokes a temporary error (when other
927 messages do not) can cause a whole host to time out.
928
f7fd3850
PH
929PH/05 Batch deliveries by appendfile and pipe transports did not work when the
930 addresses were routed directly to files or pipes from a redirect router.
931 File deliveries just didn't batch; pipe deliveries might have suffered
932 odd errors.
933
d87df92c
PH
934PH/06 A failure to get a lock for a hints database would erroneously always say
935 "Failed to get write lock", even when it was really a read lock.
936
7e9f683d
PH
937PH/07 The appendfile transport was creating MBX lock files with a fixed mode
938 of 0600. This has been changed to use the value of the lockfile_mode
939 option (which defaults to 0600).
940
bfad5236
PH
941PH/08 Applied small patch from the Sieve maintainer.
942
01c490df
PH
943PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
944 folder from quota calculations, a direct delivery into this folder messed
945 up the contents of the maildirsize file. This was because the regex was
946 used only to exclude .Trash (or whatever) when the size of the mailbox
947 was calculated. There was no check that a delivery was happening into an
948 excluded directory. This bug has been fixed by ignoring all quota
949 processing for deliveries into excluded directories.
950
d6629cdc
PH
951PH/10 Added the maildirfolder_create_regex option to appendfile.
952
1cce3af8 953
214e2000
PH
954Exim version 4.61
955-----------------
956
957PH/01 The code for finding all the local interface addresses on a FreeBSD
958 system running IPv6 was broken. This may well have applied to all BSD
959 systems, as well as to others that have similar system calls. The broken
960 code found IPv4 interfaces correctly, but gave incorrect values for the
961 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
962 that it would not match correctly against @[] and not recognize the IPv6
963 addresses as local.
964
f9daeae0
PH
965PH/02 The ipliteral router was not recognizing addresses of the form user@
966 [ipv6:....] because it didn't know about the "ipv6:" prefix.
967
7e66e54d
PH
968PH/03 Added disable_ipv6.
969
c8ea1597
PH
970PH/04 Changed $reply_address to use the raw form of the headers instead of the
971 decoded form, because it is most often used to construct To: headers
972 lines in autoreplies, and the decoded form may well be syntactically
973 invalid. However, $reply_address has leading white space removed, and all
974 newlines turned into spaces so that the autoreply transport does not
975 grumble.
976
911f6fde
PH
977PH/05 If group was specified without a user on a router, and no group or user
978 was specified on a transport, the group from the router was ignored.
979
47ca6d6c
PH
980PH/06 Increased the number of ACL variables to 20 of each type, and arranged
981 for visible compile-time settings that can be used to change these
982 numbers, for those that want even more. Backwards compatibility with old
983 spool files has been maintained. However, going back to a previous Exim
984 release will lost any variables that are in spool files.
985
ed0e9820
PH
986PH/07 Two small changes when running in the test harness: increase delay when
987 passing a TCP/IP connection to a new process, in case the original
988 process has to generate a bounce, and remove special handling of
989 127.0.0.2 (sic), which is no longer necessary.
990
eff37e47
PH
991PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
992 be the same on different OS.
993
1921d2ea
PH
994PH/09 Moved a debug statement in filter processing to avoid a race problem when
995 testing.
996
b3f69ca8
JJ
997JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
998 whether --show-vars was specified or not
999
1000JJ/02 exipick: Added support for new ACL variable spool format introduced
1001 in 4.61-PH/06
1002
424a1c63
PH
1003PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1004 syntactically invalid From: or Reply-to: line, and a filter used this to
1005 generate an autoreply, and therefore failed to obtain an address for the
1006 autoreply, Exim could try to deliver to a non-existent relative file
1007 name, causing unrelated and misleading errors. What now happens is that
1008 it logs this as a hard delivery error, but does not attempt to create a
1009 bounce message.
1010
7a100415
PH
1011PH/11 The exinext utility has a -C option for testing purposes, but although
1012 the given file was scanned by exinext itself; it wasn't being passed on
1013 when Exim was called.
1014
19b9dc85
PH
1015PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1016 an end-of-file indication when reading a command response.
1017
309bd837
PH
1018PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1019 compiled. In many other places in Exim, IPv6 addresses are always
1020 recognized, so I have changed this. It also means that IPv4 domain
1021 literals of the form [IPV4:n.n.n.n] are now always recognized.
1022
59e82a2a
PH
1023PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1024 used if the router is not running as root, for example, when verifying at
1025 ACL time, or when using -bh. The debugging output from this situation was
1026 non-existent - all you got was a failure to exec. I have made two
1027 changes:
1028
1029 (a) Failures to set uid/gid, the current directory, or a process leader
1030 in a subprocess such as that created by queryprogram now generate
1031 suitable debugging ouput when -d is set.
1032
1033 (b) The queryprogram router detects when it is not running as root,
1034 outputs suitable debugging information if -d is set, and then runs
1035 the subprocess without attempting to change uid/gid.
1036
9edc04ce
PH
1037PH/15 Minor change to Makefile for building test_host (undocumented testing
1038 feature).
1039
1349e1e5
PH
1040PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1041 additional section of a DNS packet that returns MX or SRV records.
1042 Instead, it always explicitly searches for A/AAAA records. This avoids
1043 major problems that occur when a DNS server includes only records of one
1044 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1045 fixed another bug: if SRV records were looked up and the corresponding
1046 address records were *not* found in the additional section, the port
1047 values from the SRV records were lost.
1048
ea49d0e1
PH
1049PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1050 using the correct key (the original address) when searching the retry
1051 rules in order to find which one to use for generating the retry hint.
1052
064a94c9
PH
1053PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1054 adding the default one. Similarly, if it contains a Reply-To: header, the
1055 errors_reply_to option, if set, is not used.
1056
727071f8
PH
1057PH/19 When calculating a retry time, Exim used to measure the "time since
1058 failure" by looking at the "first failed" field in the retry record. Now
1059 it does not use this if it is later than than the arrival time of the
1060 message. Instead it uses the arrival time. This makes for better
1061 behaviour in cases where some deliveries succeed, thus re-setting the
1062 "first failed" field. An example is a quota failure for a huge message
1063 when small messages continue to be delivered. Without this change, the
1064 "time since failure" will always be short, possible causing more frequent
1065 delivery attempts for the huge message than are intended.
dd16e114 1066 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1067
f78eb7c6
PH
1068PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1069 $1, $2, $3) because the numerical variables can be reset during some
1070 expansion items (e.g. "match"), thereby losing the authentication data.
1071
21c28500
PH
1072PH/21 Make -bV show the size of off_t variables so that the test suite can
1073 decide whether to run tests for quotas > 2G.
1074
1075PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1076 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1077 filecount value is greater than 2G or if a quota value is greater than 2G
1078 on a system where the size of off_t is not greater than 4, a panic error
1079 is given.
1080
1688f43b
PH
1081PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1082 never match. The debug and -bh output now contains an explicit error
1083 message indicating a malformed IPv4 address or mask.
1084
1085PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1086 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1087 PH/23 above applies.
1088
9675b384
PH
1089PH/25 Do not write to syslog when running in the test harness. The only
1090 occasion when this arises is a failure to open the main or panic logs
1091 (for which there is an explicit test).
1092
6a3f1455
PH
1093PH/26 Added the /no_tell option to "control=freeze".
1094
dac79d3e
PH
1095PH/27 If a host name lookup failed very early in a connection, for example, if
1096 the IP address matched host_lookup and the reverse lookup yielded a name
1097 that did not have a forward lookup, an error message of the form "no IP
1098 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1099 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1100
5977a0b3
PH
1101PH/28 An enabling patch from MH: add new function child_open_exim2() which
1102 allows the sender and the authenticated sender to be set when
1103 submitting a message from within Exim. Since child_open_exim() is
1104 documented for local_scan(), the new function should be too.
1105
c91535f3
PH
1106PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1107 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1108 results in an empty string is now treated as unset.
1109
0d46a8c8
PH
1110PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1111
278c6e6c
PH
1112PH/31 Added sender_verify_fail logging option.
1113
2cbb4081
PH
1114PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1115 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1116 tidied the source and removed it altogether.
1117
3eef829e
PH
1118PH/33 When a queue run was abandoned because the load average was too high, a
1119 log line was always written; now it is written only if the queue_run log
1120 selector is set. In addition, the log line for abandonment now contains
1121 information about the queue run such as the pid. This is always present
1122 in "start" and "stop" lines but was omitted from the "abandon" line.
1123
1ab95fa6
PH
1124PH/34 Omit spaces between a header name and the colon in the error message that
1125 is given when verify = headers_syntax fails (if there are lots of them,
1126 the message gets confusing).
1127
230205fc
PH
1128PH/35 Change the default for dns_check_names_pattern to allow slashes within
1129 names, as there are now some PTR records that contain slashes. This check
1130 is only to protect against broken name servers that fall over on strange
1131 characters, so the fact that it applies to all lookups doesn't matter.
1132
75e0e026
PH
1133PH/36 Now that the new test suite is complete, we can remove some of the
1134 special code in Exim that was needed for the old test suite. For example,
1135 sorting DNS records because real resolvers return them in an arbitrary
1136 order. The new test suite's fake resolver always returns records in the
1137 same order.
1138
1139PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1140 bounces) except when queue_only is set, to avoid logging races between
1141 the different processes.
1142
145396a6
PH
1143PH/38 Panic-die if .include specifies a non-absolute path.
1144
3cd34f13
PH
1145PH/39 A tweak to the "H" retry rule from its user.
1146
11121d3d
JJ
1147JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1148 a label. They prevented compilation on older perls.
1149
1150JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1151 a warning to be raised on newish perls.
1152
1153JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1154 on queue. Changes to match documented behaviour of showing count of
1155 messages matching specified criteria.
1156
8def5aaf
PH
1157PH/40 Changed the default ident timeout from 30s to 5s.
1158
929ba01c
PH
1159PH/41 Added support for the use of login_cap features, on those BSD systems
1160 that have them, for controlling the resources used by pipe deliveries.
1161
2632889e
PH
1162PH/42 The content-scanning code uses fopen() to create files in which to put
1163 message data. Previously it was not paying any attention to the mode of
1164 the files. Exim runs with umask(0) because the rest of the code creates
1165 files with open(), and sets the required mode explicitly. Thus, these
1166 files were ending up world-writeable. This was not a big issue, because,
1167 being within the spool directory, they were not world-accessible. I have
1168 created a function called modefopen, which takes an additional mode
1169 argument. It sets umask(777), creates the file, chmods it to the required
1170 mode, then resets the umask. All the relevant calls to fopen() in the
1171 content scanning code have been changed to use this function.
1172
944a9c55
PH
1173PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1174 to 24 hours. This avoids potential overflow problems when processing G
1175 and H retry rules. I suspect nobody ever tinkers with this value.
1176
4a23603b
PH
1177PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1178
4730f942
PH
1179PH/45 When the plaintext authenticator is running as a client, the server's
1180 challenges are checked to ensure they are valid base64 strings. By
1181 default, the authentication attempt is cancelled if an invalid string is
1182 received. Setting client_ignore_invalid_base64 true ignores these errors.
1183 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1184 they are received. Thus, the responses can be made to depend on the
1185 challenges. If an invalid string is ignored, an empty string is placed in
1186 the variable.
1187
30dba1e6
PH
1188PH/46 Messages that are created by the autoreply transport now contains a
1189 References: header, in accordance with RFCs 2822 and 3834.
1190
382afc6b
PH
1191PH/47 Added authenticated_sender_force to the smtp transport.
1192
a86229cf
PH
1193PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1194
50c99ba6
PH
1195PH/49 Installed latest patch from the Sieve maintainer.
1196
d35e429d
PH
1197PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1198 was also set, the appendfile transport was unnecessarily scanning a
1199 directory of message files (e.g. for maildir delivery) to find the count
1200 of files (along with the size), even though it did not need this
1201 information. It now does the scan only if it needs to find either the
1202 size of the count of files.
1203
f90d018c
PH
1204PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1205
75def545
PH
1206PH/52 Two bugs concerned with error handling when the smtp transport is
1207 used in LMTP mode:
1208
1209 (i) Exim was not creating retry information for temporary errors given
1210 for individual recipients after the DATA command when the smtp transport
1211 was used in LMTP mode. This meant that they could be retried too
1212 frequently, and not timed out correctly.
1213
1214 (ii) Exim was setting the flag that allows error details to be returned
1215 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1216 recipients that were returned after the DATA command.
1217
1218PH/53 This is related to PH/52, but is more general: for any failing address,
1219 when detailed error information was permitted to be returned to the
1220 sender, but the error was temporary, then after the final timeout, only
1221 "retry timeout exceeded" was returned. Now it returns the full error as
1222 well as "retry timeout exceeded".
1223
c46782ef
PH
1224PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1225 do this, and (what is worse) MTAs that accept it.
1226
71fafd95
PH
1227PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1228 will now be deprecated.
1229
2c5db4fd
PH
1230PH/56 New os.c-cygwin from the Cygwin maintainer.
1231
9cf6b11a
JJ
1232JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1233 formats (previously only available in exim formats via -bpr, -bpru,
1234 and -bpra. Now also available in native and exiqgrep formats)
1235
1236JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1237 with very large, slow to parse queues
1238
1239JJ/08 exipick: added ! as generic prefix to negate any criteria format
1240
1241JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1242
898d150f
PH
1243PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1244 responses to authentication challenges, though it was showing the
1245 challenges; (ii) I've removed the CR characters from the debug output for
1246 SMTP output lines.
1247
46218253
PH
1248PH/58 Allow for the insertion of a newline as well as a space when a string
1249 is turned into more than one encoded-word during RFC 2047 encoding. The
1250 Sieve code now uses this.
1251
e97957bc
PH
1252PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1253 data_4xx, lost_connection, tls_required.
1254
81e509d7
PH
1255PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1256 message was being sent as an SMTP response.
1257
3d240ff7
PH
1258PH/61 Add -l and -k options to exicyclog.
1259
b37c4101
PH
1260PH/62 When verifying, if an address was redirected to one new address, so that
1261 verification continued, and the new address failed or deferred after
1262 having set something in $address_data, the value of $address_data was not
1263 passed back to the ACL. This was different to the case when no
1264 redirection occurred. The value is now passed back in both cases.
1265
79378e0f
PH
1266PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1267 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1268 use login_cap.h, so on its own it isn't the distinguishing feature. The
1269 new name refers directly to the setclassresources() function.
1270
e49c7bb4
PH
1271PH/65 Added configuration files for NetBSD3.
1272
d114ec46
PH
1273PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1274
f3d7df6c
PH
1275PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1276 is preferred over IPv4.
1277
715ab376
PH
1278PH/68 The bounce_return_message and bounce_return_body options were not being
1279 honoured for bounces generated during the reception of non-SMTP messages.
1280 In particular, this applied to messages rejected by the ACL. This bug has
1281 been fixed. However, if bounce_return_message is true and bounce_return_
1282 body is false, the headers that are returned for a non-SMTP message
1283 include only those that have been read before the error was detected.
1284 (In the case of an ACL rejection, they have all been read.)
1285
6b31b150
PH
1286PH/69 The HTML version of the specification is now built in a directory called
1287 spec_html instead of spec.html, because the latter looks like a path with
1288 a MIME-type, and this confuses some software.
1289
1290PH/70 Catch two compiler warnings in sieve.c.
1291
d515a917
PH
1292PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1293 function verify_get_ident() calls ip_connect() to connect a socket, but
1294 if the "connect()" function timed out, ip_connect() used to close the
1295 socket. However, verify_get_ident() also closes the socket later, and in
1296 between Exim writes to the log, which may get opened at this point. When
1297 the socket was closed in ip_connect(), the log could get the same file
1298 descriptor number as the socket. This naturally causes chaos. The fix is
1299 not to close the socket in ip_connect(); the socket should be closed by
1300 the function that creates it. There was only one place in the code where
1301 this was missing, in the iplookup router, which I don't think anybody now
1302 uses, but I've fixed it anyway.
1303
9b8fadde
PH
1304PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1305 well as to direct DNS lookups. Otherwise the handling of names in host
1306 lists is inconsistent and therefore confusing.
1307
214e2000 1308
5de37277
PH
1309Exim version 4.60
1310-----------------
1311
cc38ddbf
PH
1312PH/01 Two changes to the default runtime configuration:
1313
1314 (1) Move the checks for relay_from_hosts and authenticated clients from
1315 after to before the (commented out) DNS black list checks.
1316
1317 (2) Add control=submission to the relay_from_hosts and authenticated
1318 clients checks, on the grounds that messages accepted by these
1319 statements are most likely to be submissions.
5de37277 1320
72fdd6ae
PH
1321PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1322
1323 (1) Generate an error if the third argument for the ${prvs expansion is
1324 not a single digit.
1325
1326 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1327 string.
1328
1329 (3) Reset the variables that are obtained from the first argument of
1330 ${prvscheck and used in the second argument before leaving the code,
1331 because their memory is reclaimed, so using them afterwards may do
1332 silly things.
1333
1334 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1335 one (it's much easier than Tom thought :-).
1336
1337 (5) Because of (4), we can now allow for the use of $prvscheck_result
1338 inside the third argument.
cb9328de 1339
cb741023
PH
1340PH/03 For some reason, the default setting of PATH when running a command from
1341 a pipe transport was just "/usr/bin". I have changed it to
1342 "/bin:/usr/bin".
1343
f174f16e
PH
1344PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1345 anything to be listed in the output from -bV.
b2f5a032 1346
c25242d7
PH
1347PH/05 When a filter generated an autoreply, the entire To: header line was
1348 quoted in the delivery log line, like this:
1349
1350 => >A.N.Other <ano@some.domain> <original@ddress> ...
1351
1352 This has been changed so that it extracts the operative address. There
1353 may be more than one such address. If so, they are comma-separated, like
1354 this:
1355
1356 => >ano@some.domain,ona@other.domain <original@ddress> ...
1357
82c19f95
PH
1358PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1359 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1360 not being looked up in the rDNS to get a host name, Exim was showing the
1361 IP address twice in Received: lines, even though the IP addresses were
1362 identical. For example:
1363
1364 Received: from [1.2.3.4] (helo=[1.2.3.4])
1365
1366 However, if the real host name was known, it was omitting the HELO data
1367 if it matched the actual IP address. This has been tidied up so that it
1368 doesn't show the same IP address twice.
1369
d7ffbc12
PH
1370PH/07 When both +timestamp and +memory debugging was on, the value given by
1371 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1372 called by the debug printing, thereby overwriting the timestamp buffer.
1373 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1374
9f526266
PH
1375PH/08 When the original message was included in an autoreply transport, it
1376 always said "this is a copy of the message, including all the headers",
1377 even if body_only or headers_only was set. It now gives an appropriate
1378 message.
1379
87fcc8b9
PH
1380PH/09 Applied a patch from the Sieve maintainer which:
1381
1382 o fixes some comments
1383 o adds the (disabled) notify extension core
1384 o adds some debug output for the result of if/elsif tests
1385 o points to the current vacation draft in the documentation
1386 and documents the missing references header update
1387
1388 and most important:
1389
1390 o fixes a bug in processing the envelope test (when testing
1391 multiple envelope elements, the last element determinted the
1392 result)
1393
456682f5
PH
1394PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1395 Electronic Mail") by including:
1396
1397 Auto-submitted: auto-generated
1398
1399 in the messages that it generates (bounce messages and others, such as
1400 warnings). In the case of bounce messages for non-SMTP mesages, there was
1401 also a typo: it was using "Auto_submitted" (underscore instead of
1402 hyphen). Since every message generated by Exim is necessarily in response
1403 to another message, thes have all been changed to:
1404
1405 Auto-Submitted: auto-replied
1406
1407 in accordance with these statements in the RFC:
1408
1409 The auto-replied keyword:
1410
1411 - SHOULD be used on messages sent in direct response to another
1412 message by an automatic process,
1413
1414 - MUST NOT be used on manually-generated messages,
1415
1416 - MAY be used on Delivery Status Notifications (DSNs) and Message
1417 Disposition Notifications (MDNs),
1418
1419 - MUST NOT be used on messages generated by automatic or periodic
1420 processes, except for messages which are automatic responses to
1421 other messages.
1422
3e46c1aa
PH
1423PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1424 to the default Received: header definition.
456682f5 1425
49826d12
PH
1426PH/12 Added log selector acl_warn_skipped (default on).
1427
eba0c039
PH
1428PH/13 After a successful wildlsearch lookup, discard the values of numeric
1429 variables because (a) they are in the wrong storage pool and (b) even if
1430 they were copied, it wouldn't work properly because of the caching.
1431
a0d6ba8a
PH
1432PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1433 checking when decoding. Apparently there are clients that generate
1434 overlong encoded strings. Why am I not surprised?
1435
f0917727
PH
1436PH/15 If the first argument of "${if match_address" was not empty, but did not
1437 contain an "@" character, Exim crashed. Now it writes a panic log message
1438 and treats the condition as false.
1439
096fee00
PH
1440PH/16 In autoreply, treat an empty string for "once" the same as unset.
1441
024bd3c2
PH
1442PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1443 extension "envelope-auth". The code is finished and in agreement with
1444 other implementations, but there is no documentation so far and in fact,
1445 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1446 not changing the active code.
1447
1448 Print executed "if" and "elsif" statements when debugging is used. This
1449 helps a great deal to understand what a filter does.
1450
1451 Document more things not specified clearly in RFC3028. I had all this
1452 sorted out, when out of a sudden new issues came to my mind. Oops."
1453
df199fec
PH
1454PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1455 (Bugzilla #53).
1456
d27f1df3
PH
1457PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1458 canonical form (as documented). However, after a host name lookup from
1459 the IP address, check_host() was doing a simple string comparison with
1460 addresses acquired from the DNS when checking that the found name did
1461 have the original IP as one of its addresses. Since any found IPv6
1462 addresses are likely to be in abbreviated form, the comparison could
1463 fail. Luckily, there already exists a function for doing the comparison
1464 by converting both addresses to binary, so now that is used instead of
1465 the text comparison.
1466
96776534
PH
1467PH/20 There was another similar case to PH/19, when a complete host name was
1468 given in a host list; looking up its IP address could give an abbreviated
1469 form, whereas the current host's name might or might not be abbreviated.
1470 The same fix has been applied.
1471
5de37277 1472
9a799bc0
PH
1473Exim version 4.54
1474-----------------
1475
1476PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1477 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1478 It now does.
1479
99a4b039
PH
1480PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1481 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1482
1483PH/03 Typo: missing ".o" in src/pcre/Makefile.
1484
4b233853
PH
1485PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1486 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1487 Also, for "Auto-Submitted", treat anything other than "no" as
1488 non-personal, in accordance with RFC 3834. (Previously it treated
1489 anything starting "auto-" as non-personal.)
1490
8857ccfd
PH
1491TF/01 The control=submission/name=... option had a problem with syntax
1492 errors if the name included a slash character. The /name= option
1493 now slurps the rest of the string, so it can include any characters
1494 but it must come last in the list of options (after /sender_retain
1495 or /domain=).
1496
433a2980
PH
1497PH/05 Some modifications to the interface to the fake nameserver for the new
1498 testing suite.
1499
3e46c1aa 1500
9a799bc0 1501
e3a311ba
TK
1502Exim version 4.53
1503-----------------
1504
1505TK/01 Added the "success_on_redirect" address verification option. See
1506 NewStuff for rationale and an example.
1507
13b685f9
PH
1508PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1509
395ff96d
PH
1510PH/02 Patch to exigrep to allow it to work on syslog lines.
1511
5b68f6e4
PH
1512PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1513 fread() to skip over the body file's header line, because in Cygwin the
1514 header line is locked and is inaccessible.
1515
1ab52c69
PH
1516PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1517 co-exist for some time) to make it clear that it is the Exim ID that is
1518 referenced, not the Message-ID: header line.
1519
b07e6aa3
PH
1520PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1521 string_format() function, because snprintf() does not exist on all
1522 operating systems.
1523
254e032f
PH
1524PH/06 The use of forbid_filter_existstest now also locks out the use of the
1525 ${stat: expansion item.
1526
3af76a81
PH
1527PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1528 protocol synchronization error", to keep the pedants happy.
1529
2548ba04
PH
1530PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1531 well as for IRIX systems, when gcc is being used. See the host.c source
1532 file for comments.
1533
b6c6011d
PH
1534PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1535
cf39cf57
PH
1536PH/10 Named domain lists were not working if used in a queue_smtp_domains
1537 setting.
1538
f1513293
PH
1539PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1540 transport and to the smtp transport in LMTP mode.
1541
727549a4
PH
1542TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1543
af46795e
PH
1544PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1545 run a filter in a subprocess. This could lead to confusion in subsequent
1546 lookups in the parent process. There should also be a search_tidyup() at
1547 the end of the subprocess.
1548
d7b47fd0
PH
1549PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1550 only if the host matched helo_try_verify_hosts, which caused the
1551 verification to occur when the EHLO/HELO command was issued. The ACL just
1552 tested the remembered result. Now, if a previous verification attempt has
1553 not happened, "verify = helo" does it there and then.
1554
ee744174
JJ
1555JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1556
b582ab87
PH
1557TK/03 Fix log output including CR from clamd.
1558
41a13e0a
PH
1559PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1560 exist provoked a memory error which could cause a segfault.
1561
f625cc5a
PH
1562PH/15 Installed PCRE 6.2
1563
1564PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1565
21f7af35
PH
1566PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1567 of the problem. Specifically, suggested +O2 rather than +O1 for the
1568 HP-UX compiler.
1569
31480e42
PH
1570PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1571
2d280592
PH
1572PH/20 If a delivery was routed to a non-standard port by means of an SRV
1573 record, the port was not correctly logged when the outgoing_port log
1574 selector was set (it logged the transort's default port).
1575
7cd1141b
PH
1576PH/21 Added support for host-specific ports to manualroute, queryprogram,
1577 fallback_hosts, and "hosts" in the smtp transport.
1578
1579PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1580 host errors such as "Connection refused".
1581
750af86e
PH
1582PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1583 authentication with radiusclient 0.4.9:
1584
1585 - Error returned from rc_read_config was caught wrongly
1586 - Username/password not passed on to radius server due to wrong length.
1587
1588 The presumption is that some radiusclient API changes for 4.51/PH/17
1589 were not taken care of correctly. The code is still untested by me (my
1590 Linux distribution still has 0.3.2 of radiusclient), but it was
1591 contributed by a Radius user.
1592
1593PH/24 When doing a callout, the value of $domain wasn't set correctly when
1594 expanding the "port" option of the smtp transport.
1595
4304270b
TK
1596TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1597 while reading a MIME header. Thanks to Tom Hughes for a patch.
1598
750af86e
PH
1599PH/24 Include config.h inside local_scan.h so that configuration settings are
1600 available.
1601
64ffc24f
PH
1602PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1603 that in an ACL for RCPT (for example), you can examine exactly what was
1604 received.
1605
5dd9625b
PH
1606PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1607 commands, but it was not correctly comparing the address with the actual
1608 client host address. Thus, it would show the EHLO address in Received:
1609 header lines when this was not necessary.
1610
5591031b
PH
1611PH/27 Added the % operator to ${eval:}.
1612
ba18e66a
PH
1613PH/28 Exim tries to create and chdir to its spool directory when it starts;
1614 it should be ignoring failures (because with -C, for example, it has lost
1615 privilege). It wasn't ignoring creation failures other than "already
1616 exists".
1617
9cec981f
PH
1618PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1619 -bV or -d is used.
1620
aa2b5c79
PH
1621PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1622 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1623 too many continuations, the temporary file was not being removed, and the
1624 return code was incorrect.
aa2b5c79 1625
48a53b7f
PH
1626PH/31 Missing "BOOL" in function definition in filtertest.c.
1627
1c59d63b
PH
1628PH/32 Applied Sieve patches from the maintainer.
1629
671012da
TK
1630TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1631
1509d3a8
PH
1632PH/33 Added "verify = not_blind".
1633
1634PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1635 Local/Makefile (with some defaults set). These are used in built scripts
1636 such as exicyclog, but they have never been used in the exim_install
1637 script (though there are many overriding facilities there). I have
1638 arranged that the exim_install script now takes note of these two
1639 settings.
1640
1641PH/35 Installed configuration files for Dragonfly.
1642
2fe1a124
PH
1643PH/36 When a locally submitted message by a trusted user did not contain a
1644 From: header, and the sender address was obtained from -f or from an SMTP
1645 MAIL command, and the trusted user did not use -F to supply a sender
1646 name, $originator_name was incorrectly used when constructing a From:
1647 header. Furthermore, $originator_name was used for submission mode
1648 messages from external hosts without From: headers in a similar way,
1649 which is clearly wrong.
1650
8800895a
PH
1651PH/37 Added control=suppress_local_fixups.
1652
ccfdb010
PH
1653PH/38 When log_selector = +received_sender was set, and the addition of the
1654 sender made the log line's construction buffer exactly full, or one byte
1655 less than full, an overflow happened when the terminating "\n" was
1656 subsequently added.
1657
1130bfb0
PH
1658PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1659 when the result of a list match is failure because a DNS lookup failed.
1660
ebcb507f
PH
1661PH/40 RM_COMMAND is now used in the building process.
1662
c35e155c
PH
1663PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1664 the "build-* directories that it finds.
1665
95d1f782
PH
1666PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1667 address in a domain literal was a prefix of an interface address.
1668
fd6de02e
PH
1669PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1670 when verifying a sender address, unless rewrite_headers is false.
1671
58de37c5
PH
1672PH/44 Wrote a long comment about why errors_to addresses are verified as
1673 recipients, not senders.
1674
261cf466
TF
1675TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1676 the ratelimit ACL was added.
1677
3ee512ff
PH
1678PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1679
e08c430f
PH
1680PH/46 Added extra information about PostgreSQL errors to the error string.
1681
bef5a11f
PH
1682PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1683 avoiding the need to install special zones in a real server. This is
1684 backwards compatible; if it can't find the fake resolver, it drops back.
1685 Thus, both old and new test suites can be run.
1686
7546de58
TF
1687TF/02 Added util/ratelimit.pl
1688
e5d5a95f
TF
1689TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1690 clock is set back in time.
1691
2e88a017
TF
1692TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1693 Candler <B.Candler@pobox.com>.
1694
a5f65aa4
TF
1695TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1696 OK for addresses that are the result of redirections.
1697
e7726cbf
PH
1698PH/48 A number of further additions for the benefit of the new test suite,
1699 including a fake gethostbyname() that interfaces to the fake DNS resolver
1700 (see PH/47 above).
1701
a7fdad5b
TF
1702TF/06 The fix for widen_domains has also been applied to qualify_single and
1703 search_parents which are the other dnslookup options that can cause
1704 header rewrites.
1705
6af56900
PH
1706PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1707 type ("H").
1708
0925ede6
PH
1709PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1710
66afa403
TF
1711TF/07 Exim produced the error message "an SRV record indicated no SMTP
1712 service" if it encountered an MX record with an empty target hostname.
1713 The message is now "an MX or SRV record indicated no SMTP service".
1714
0154e85a
TF
1715TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1716 if the DNS of the sending site is misconfigured. This is quite a
1717 common situation. This change restores the behaviour of treating a
1718 helo verification defer as a failure.
1719
16f12c76
PH
1720PH/51 If self=fail was set on a router, the bounce message did not include the
1721 actual error message.
1722
bbe902f0 1723
e5a9dba6
PH
1724Exim version 4.52
1725-----------------
1726
1727TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1728
22c3b60b
PH
1729PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1730 command itself ended in error, the underlying message about the transport
1731 filter timeout was being overwritten with the pipe command error. Now the
1732 underlying error message should be appended to the second error message.
1733
06a9b4b5
PH
1734TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1735
c1ac6996
PH
1736PH/02 Reduce the amount of output that "make" produces by default. Full output
1737 can still be requested.
1738
9c7a242c
PH
1739PH/03 The warning log line about a condition test deferring for a "warn" verb
1740 was being output only once per connection, rather than after each
1741 occurrence (because it was using the same function as for successful
1742 "warn" verbs). This seems wrong, so I have changed it.
1743
87ba3f5f
PH
1744TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1745 it should not have, which might have caused a crash in the right
1746 circumstances, but probably never did.
1747
1748PH/04 Installed a modified version of Tony Finch's patch to make submission
1749 mode fix the return path as well as the Sender: header line, and to
1750 add a /name= option so that you can make the user's friendly name appear
1751 in the header line.
1752
29aba418
TF
1753TF/03 Added the control = fakedefer ACL modifier.
1754
fe0dab11
TF
1755TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1756 Mark Lowes for thorough testing.
870f6ba8 1757
11d337a4
TK
1758TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1759
1760TK/03 Merged latest SRS patch from Miles Wilton.
1761
415c8f3b
PH
1762PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1763 with the definition in sysexits.h (which is #included earlier).
1764 Fortunately, Exim does not actually use EX_OK. The code used to try to
1765 preserve the sysexits.h value, by assumimg that macro definitions were
1766 scanned for macro replacements. I have been disabused of this notion,
1767 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1768
958541e9
PH
1769PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1770 in the smtp transport. When a block could not be written in a single
1771 write() function, the timeout was being re-applied to each part-write.
1772 This seems wrong - if the receiver was accepting one byte at a time it
1773 would take for ever. The timeout is now adjusted when this happens. It
1774 doesn't have to be particularly precise.
1775
c206415f
TK
1776TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1777 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1778
2a4be8f9
PH
1779PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1780 without a domain if the check to <postmaster@domain> fails.
1781
1cba11c5
SC
1782SC/01 Eximstats: added -xls and the ability to specify output files
1783 (patch written by Frank Heydlauf).
1784
1785SC/02 Eximstats: use FileHandles for outputing results.
1786
1787SC/03 Eximstats: allow any combination of xls, txt, and html output.
1788
1789SC/04 Eximstats: fixed display of large numbers with -nvr option
1790
1791SC/05 Eximstats: fixed merging of reports with empty tables.
1792
1793SC/06 Eximstats: added the -include_original_destination flag
1794
1795SC/07 Eximstats: removed tabs and trailing whitespace.
1796
1005d00e
TK
1797TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1798
1799TK/06 MBOX spool code: Add real "From " MBOX separator line
1800 so the .eml file is really in mbox format (even though
1801 most programs do not really care). Patch from Alex Miller.
1802
1803TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1804 The latter is generated from $received_to and is only set if the
1805 message has one envelope recipient. SA can use these headers,
1806 obviously out-of-the-box. Patch from Alex Miller.
1807
9b4768fa
PH
1808PH/08 The ${def test on a variable was returning false if the variable's
1809 value was "0", contrary to what the specification has always said!
1810 The result should be true unless the variable is empty.
1811
1812PH/09 The syntax error of a character other than { following "${if
1813 def:variable_name" (after optional whitespace) was not being diagnosed.
1814 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1815 accidental colon was present, for example, could give incorrect results.
1816
0d7eb84a
PH
1817PH/10 Tidied the code in a number of places where the st_size field of a stat()
1818 result is used (not including appendfile, where other changes are about
1819 to be made).
1820
1821PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1822 This involved changing a lot of size variables from int to off_t. It
1823 should work with maildirs and everything.
1824
40727bee
TK
1825TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1826 spamd dying while we are connected to it.
1827
554d2369
TF
1828TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1829 <jgh@wizmail.org>
1830
1f922db1
PH
1831PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1832 function for BDB 4.3.
1833
ef213c3b
PH
1834PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1835
8ac170f3
PH
1836PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1837 the sources for PCRE have been re-arranged and more files are now
1838 involved.
1839
b1c749bb
PH
1840PH/15 The code I had for printing potentially long long variables in PH/11
1841 above was not the best (it lost precision). The length of off_t variables
1842 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1843 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1844 to be "long long int" or "long int". This is needed for the internal
1845 formatting function string_vformat().
b1c749bb 1846
4aac9b49
PH
1847PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1848 the configuration file to be ":syslog", then the script "guesses" where
1849 the logs files are, rather than using the compiled in default. In our
1850 case the guess is not the same as the compiled default, so the script
1851 suddenly stopped working when I started to use syslog. The patch checks
1852 to see if log_file_path is "". If so, it attempts to read it from exim
1853 with no configuration file to get the compiled in version, before it
1854 falls back to the previous guessing code."
1855
294520c8
TK
1856TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1857 implementing BATV in an Exim configuration. See NewStuff for the gory
1858 details.
1859
5bd022fe
PH
1860PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1861 Makefile that are specific to HP-UX.
1862
90e9ce59
PH
1863PH/18 If the "use_postmaster" option was set for a recipient callout together
1864 with the "random" option, the postmaster address was used as the MAIL
1865 FROM address for the random test, but not for the subsequent recipient
1866 test. It is now used for both.
1867
5ea81592
PH
1868PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1869 patch removes a few documentation additions to RFC 3028, because the
1870 latest draft now contains them. It adds the new en;ascii-case comparator
1871 and a new error check for 8bit text in MIME parts. Comparator and
1872 require names are now matched exactly. I enabled the subaddress
1873 extension, but it is not well tested yet (read: it works for me)."
1874
c6c2dc1d
PH
1875PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1876 rework some of the code of TK/09 above to avoid the hardwired use of
1877 "%lld" and "long long". Replaced the call to snprintf() with a call to
1878 string_vformat().
1879
fffffe4c
PH
1880PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1881 records point to non-existent hosts", "retry timeout exceeded", and
1882 "retry time not reached for any host after a long failure period".
ca02eafb 1883
9a26b6b2
PH
1884PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1885 experimental DomainKeys support:
1886
1887 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1888 (2) On an error such as an illegally used "control", the wrong name for
1889 the control was given.
1890
1891 These problems did NOT occur unless DomainKeys support was compiled.
1892
4aee0225
PH
1893PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1894
32d668a5
PH
1895PH/24 Added ${if match_ip condition.
1896
8187c3f3
PH
1897PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1898 databases so that it will be absolutely obvious if a crash occurs in the
1899 DB library. This is a regular occurrence (often caused by mis-matched
1900 db.h files).
1901
ff790e47 1902PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1903 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1904 picked up on a user's system that detects such things. There doesn't seem
1905 to be a gcc warning option for this - only an attribute that has to be
1906 put on the function's prototype. It seems that in Fedora Core 4 they have
1907 set this on a number of new functions. No doubt there will be more in due
1908 course.
ff790e47 1909
5417f6d1
PH
1910PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1911 specify a transport. However, if an address that was verified by such a
1912 router was the subject of a callout, Exim crashed because it tried to
1913 read the rcpt_include_affixes from the non-existent transport. Now it
1914 just assumes that the setting of that option is false. This bug was
1915 introduced by 4.51/PH/31.
1916
59cf8544
PH
1917PH/28 Changed -d+all to exclude +memory, because that information is very
1918 rarely of interest, but it makes the output a lot bigger. People tend to
1919 do -d+all out of habit.
1920
e7ad8a65
PH
1921PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1922 code in os-type was giving problems when libc.so lives in lib64, like on
1923 x86_64 Fedora Core.
1924
ade42478
PH
1925PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1926 aren't the modern standard, and it seems that some systems' include files
1927 don't always have them. Exim was already checking for some of the newer
1928 ones like T_AAAA, and defining it itself. I've added checks for all the
1929 record types that Exim uses.
1930
182ad5cf
PH
1931PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1932 not automatically generating a new one, as it is supposed to. This
1933 prevented TLS from working. If the file did exist, but contained invalid
1934 data, a new version was generated, as expected. It was only the case of a
1935 non-existent file that was broken.
1936
b0d9fc80
TK
1937TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1938 with a change in libdomainkeys > 0.64.
1939
1940TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1941 from DNS. If the selector record carries the flag, it now has
1942 precedence over the domain-wide flag.
1943
1944TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1945
47c7a64a
PH
1946PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1947 the use of a port name that isn't defined in /etc/services) occurred, the
1948 message was deferred as in a normal delivery, and thus remained on the
1949 spool, instead of being failed because of the mua_wrapper setting. This
1950 is now fixed, and I tidied up some of the mua_wrapper messages at the
1951 same time.
1952
a388bce4
SC
1953SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1954 the messages in a hash of arrays rather than using individual hashes.
1955 This is a bit cleaner and results in dramatic memory savings, albeit
1956 at a slight CPU cost.
1957
1958SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1959 as requested by Marc Sherman.
1960
1961SC/10 Eximstats: added histograms for user specified patterns as requested
1962 by Marc Sherman.
1963
0793e4ed
SC
1964SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1965
c58b88df
PH
1966PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1967 fopen() in the content-scanning modules that did not already have it.
1968
e7ad8a65 1969
7982096b
PH
1970Exim version 4.51
1971-----------------
1972
1a46a8c5
PH
1973TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1974 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1975
2f079f46 1976TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1977
1978TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1979
1980PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1981 to test Sieve filters that use "vacation".
1982
1983PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1984 that changes the way the GnuTLS parameters are stored in the cache file.
1985 The new format can be generated externally. For backward compatibility,
1986 if the data in the cache doesn't make sense, Exim assumes it has read an
1987 old-format file, and it generates new data and writes a new file. This
1988 means that you can't go back to an older release without removing the
1989 file.
1990
1991PH/03 A redirect router that has both "unseen" and "one_time" set does not
1992 work if there are any delivery delays because "one_time" forces the
1993 parent to be marked "delivered", so its unseen clone is never tried
1994 again. For this reason, Exim now forbids the simultaneous setting of
1995 these two options.
1996
1997PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1998 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1999 entry if you want to know the details. The fix, however, neglected to
2000 consider the case when local delivery batching is involved. The test for
2001 "previously delivered" was not happening when checking to see if an
2002 address could be batched with a previous (undelivered) one; under
2003 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 2004 address.
1a46a8c5
PH
2005
2006PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2007 in its include files, and this causes problems building Exim.
2008
2009PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2010 header_syntax) but Exim was just ignoring anything given after a slash.
2011 In particular, this caused confusion with an attempt to use "verify =
2012 reverse_host_lookup/defer_ok". An error is now given when options are
2013 supplied for verify items that do not have them. (Maybe reverse_host_
2014 lookup should have a defer_ok option, but that's a different point.)
2015
2016PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2017 defined by RFC 821) to 2048, because there were problems with some AUTH
2018 commands, and RFC 1869 says the size should be increased for extended
2019 SMTP commands that take arguments.
2020
2021PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2022 Finch).
2023
2024PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2025 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2026
49c2d5ea
PH
2027PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2028 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2029 whatever). Otherwise the password may appear in the log. Following change
2030 PH/42 below, there is no longer a chance of it appearing in a bounce
2031 message.
49c2d5ea 2032
bf759a8b
PH
2033PH/11 Installed exipick version 20050225.0 from John Jetmore.
2034
83364d30
PH
2035PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2036 of its addresses was ever tried. (Bugzilla bug #2.)
2037
7999bbd7
PH
2038PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2039 the result incorrectly in the debug output. (It correctly added a newline
2040 to what was transported.)
2041
7dbf77c9
PH
2042TF/01 Added $received_time.
2043
74e0617f
PH
2044PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2045 commented out examples of how to interface to a virus scanner and to
2046 SpamAssassin. Also added commented examples of av_scanner and
2047 spamd_address settings.
2048
2f079f46
PH
2049PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2050 and controls are allowed in which ACLs. There were a couple of minor
2051 errors. Some of the entries in the conditions table (which is a table of
2052 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2053 negation of where the condition IS allowed.
2054
8c841523
PH
2055PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2056
7766a4f0
PH
2057PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2058 header file does not have a version number, so I've had to invent a new
2059 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2060 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2061 radiusclient), but it was contributed by a Radius user.
2062
8b417f2c
PH
2063PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2064 files or directories, for OpenSSL.
2065
901f42cb
PH
2066PH/19 When an Exim process that is running as root has to create an Exim log
2067 file, it does so in a subprocess that runs as exim:exim so as to get the
2068 ownership right at creation (otherwise, other Exim processes might see
2069 the file with the wrong ownership). There was no test for failure of this
2070 fork() call, which would lead to the process getting stuck as it waited
2071 for a non-existent subprocess. Forks do occasionally fail when resources
2072 run out. I reviewed all the other calls to fork(); they all seem to check
2073 for failure.
2074
f9b9210e
PH
2075PH/20 When checking for unexpected SMTP input at connect time (before writing
2076 the banner), Exim was not dealing correctly with a non-positive return
2077 from the read() function. If the client had disconnected by this time,
2078 the result was a log entry for a synchronization error with an empty
2079 string after "input=" when read() returned zero. If read() returned -1
2080 (an event I could not check), uninitialized data bytes were printed.
2081 There were reports of junk text (parts of files, etc) appearing after
2082 "input=".
2083
54cdb463
PH
2084PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2085
cf00dad6
PH
2086PH/22 Added support for macro redefinition, and (re)definition in between
2087 driver and ACL definitions.
2088
acb1b346
PH
2089PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2090 forgetting to use the resulting value; it was using the unexpanded value.
2091
c5ddb310
PH
2092PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2093 hadn't been configured. The fix is from Juergen Kreileder, who
2094 understands it better than I do:
2095
2096 "Here's what I see happening with three configured cyrus_sasl
2097 authenticators configured (plain, login, cram-md5):
2098
2099 On startup auth_cyrus_sasl_init() gets called for each of these.
2100 This means three calls to sasl_listmech() without a specified mech_list.
2101 => SASL tests which mechs of all available mechs actually work
2102 => three warnings about OTP not working
2103 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2104
2105 With the patch, sasl_listmech() also gets called three times. But now
2106 SASL's mech_list option is set to the server_mech specified in the the
2107 authenticator. Or in other words, the answer from sasl_listmech()
2108 gets limited to just the mech you're testing for (which is different
2109 for each call.)
2110 => the return list contains just 'plain' or 'login', 'cram-md5' or
2111 nothing depending on the value of ob->server_mech.
2112
2113 I've just tested the patch: Authentication still works fine,
2114 unavailable mechs specified in the exim configuration are still
2115 caught, and the auth.log warnings about OTP are gone."
2116
31619da6
PH
2117PH/25 When debugging is enabled, the contents of the command line are added
2118 to the debugging output, even when log_selector=+arguments is not
2119 specified.
2120
bebaf0fc
PH
2121PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2122 answer is "GNU", and only if the return is "GNU/something" is the answer
2123 "Linux".
2124
475fe28a
PH
2125PH/27 $acl_verify_message is now set immediately after the failure of a
2126 verification in an ACL, and so is available in subsequent modifiers. In
2127 particular, the message can be preserved by coding like this:
2128
2129 warn !verify = sender
2130 set acl_m0 = $acl_verify_message
2131
2132 Previously, $acl_verify_message was set only while expanding "message"
2133 and "log_message" when a very denied access.
2134
7e8bec7a
PH
2135PH/28 Modified OS/os.c-Linux with
2136
2137 -#ifndef OS_LOAD_AVERAGE
2138 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2139
2140 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2141 nomenclature these days.)
2142
e4a89c47
PH
2143PH/29 Installed patch from the Sieve maintainer that adds the options
2144 sieve_useraddress and sieve_subaddress to the redirect router.
2145
5ca2a9a1
PH
2146PH/30 In these circumstances:
2147 . Two addresses routed to the same list of hosts;
2148 . First host does not offer TLS;
2149 . First host accepts first address;
2150 . First host gives temporary error to second address;
2151 . Second host offers TLS and a TLS session is established;
2152 . Second host accepts second address.
2153 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2154 and peerdn, if requested) that were in fact used only for the second
2155 address.
7e8bec7a 2156
c688b954
PH
2157PH/31 When doing a callout as part of verifying an address, Exim was not paying
2158 attention to any local part prefix or suffix that was matched by the
2159 router that accepted the address. It now behaves in the same way as it
2160 does for delivery: the affixes are removed from the local part unless
2161 rcpt_include_affixes is set on the transport.
2162
fed77020
PH
2163PH/32 Add the sender address, as F=<...>, to the log line when logging a
2164 timeout during the DATA phase of an incoming message.
2165
7fe1560f
PH
2166PH/33 Sieve envelope tests were broken for match types other than :is. I have
2167 applied a patch sanctioned by the Sieve maintainer.
c688b954 2168
ebb6e6d5
PH
2169PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2170 the uid or gid is negative. A case of a negative gid caused this to be
2171 noticed. The fix allows for either to be negative.
2172
9c4e8f60
PH
2173PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2174 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2175 overlooked.
2176
2177PH/36 The change PH/12 above was broken. Fixed it.
2178
d7174846
PH
2179PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2180 the grounds that routing the same address twice would always produce the
2181 same answer. This might have been true once, but it is certainly no
2182 longer true now. Routing a child address may depend on the previous
2183 routing that produced that child. Some complicated redirection strategies
2184 went wrong when messages had multiple recipients, and made Exim's
2185 behaviour dependent on the order in which the addresses were given.
2186
2187 I have moved the duplicate checking until after the routing is complete.
2188 Exim scans the addresses that are assigned to local and remote
2189 transports, and removes any duplicates. This means that more work will be
2190 done, as duplicates will always all be routed, but duplicates are
2191 presumably rare, so I don't expect this is of any significance.
2192
2193 For deliveries to pipes, files, and autoreplies, the duplicate checking
2194 still happens during the routing process, since they are not going to be
2195 routed further.
2196
cfe75fc3
PH
2197PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2198 It corrects a timeout issue with spamd. This is Ian's comment: "The
2199 background is that sometimes spamd either never reads data from a
2200 connection it has accepted, or it never writes response data. The exiscan
2201 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2202 blindly assumes that writes won't block so it may never time out."
2203
be22d70e
PH
2204PH/39 Allow G after quota size as well as K and M.
2205
0612b098
PH
2206PH/40 The value set for $authenticated_id in an authenticator may not contain
2207 binary zeroes or newlines because the value is written to log lines and
2208 to spool files. There was no check on this. Now the value is run through
2209 the string_printing() function so that such characters are converted to
2210 printable escape sequences.
2211
2e0c1448
PH
2212PH/41 $message_linecount is a new variable that contains the total number of
2213 lines in the message. Compare $body_linecount, which is the count for the
2214 body only.
2215
447d236c
PH
2216PH/42 Exim no longer gives details of delivery errors for specific addresses in
2217 bounce and delay warning messages, except in certain special cases, which
2218 are as follows:
2219
2220 (a) An SMTP error message from a remote host;
2221 (b) A message specified in a :fail: redirection;
2222 (c) A message specified in a "fail" command in a system filter;
2223 (d) A message specified in a FAIL return from the queryprogram router;
2224 (e) A message specified by the cannot_route_message router option.
2225
2226 In these cases only, Exim does include the error details in bounce and
2227 warning messages. There are also a few cases where bland messages such
2228 as "unrouteable address" or "local delivery error" are given.
2229
d20976dc
PH
2230PH/43 $value is now also set for the "else" part of a ${run expansion.
2231
f656d135
PH
2232PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2233 being worked on, but at least Exim now implements the latest version to
2234 play with."
2235
2e2a30b4
PH
2236PH/45 In a pipe transport, although a timeout while waiting for the pipe
2237 process to complete was treated as a delivery failure, a timeout while
2238 writing the message to the pipe was logged, but erroneously treated as a
2239 successful delivery. Such timeouts include transport filter timeouts. For
2240 consistency with the overall process timeout, these timeouts are now
2241 treated as errors, giving rise to delivery failures by default. However,
2242 there is now a new Boolean option for the pipe transport called
2243 timeout_defer, which, if set TRUE, converts the failures into defers for
2244 both kinds of timeout. A transport filter timeout is now identified in
2245 the log output.
2246
9176e9f0
PH
2247PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2248 systems where "make" and "gmake" are different, calling "gmake" at top
2249 level broke things. I've arranged for the value of $(MAKE) to be passed
2250 from the Makefile to this script so that it can call the same version of
2251 "make".
2252
7982096b 2253
bbe902f0
PH
2254A note about Exim versions 4.44 and 4.50
2255----------------------------------------
2256
2257Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2258changes of various kinds. As a consequence, a big documentation update was
2259needed. This delayed the release for rather longer than seemed good, especially
2260in the light of a couple of (minor) security issues. Therefore, the changes
2261that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2262release. So 4.44 and 4.50 are in effect two different branches that both start
2263from 4.43.
2264
2265I have left the 4.50 change log unchanged; it contains all the changes since
22664.43. The change log for 4.44 is below; many of its items are identical to
2267those for 4.50. This seems to be the most sensible way to preserve the
2268historical information.
2269
2270
f7b63901 2271Exim version 4.50
495ae4b0
PH
2272-----------------
2273
5fe762f6
PH
2274 1. Minor wording change to the doc/README.SIEVE file.
2275
139059f6 2276 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2277 computation of the current number of files was incorrect.
495ae4b0 2278
7086e875
PH
2279 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2280 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2281 place.
2282
35af9f61
PH
2283 4. Give more explanation in the error message when the command for a transport
2284 filter fails to execute.
2285
b668c215
PH
2286 5. There are several places where Exim runs a non-Exim command in a
2287 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2288 was being done only for the command run by the queryprogram router. It is
2289 now done for all such subprocesses. The other cases are: ${run, transport
2290 filters, and the commands run by the lmtp and pipe transports.
2291
a494b1e1
PH
2292 6. Added CONFIGURE_GROUP build-time option.
2293
2294 7. Some older OS have a limit of 256 on the maximum number of file
2295 descriptors. Exim was using setrlimit() to set 1000 as a large value
2296 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2297 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2298
c5fcb476
PH
2299 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2300 was an oversight, and furthermore, ever since the addition of extra
2301 controls (e.g. 4.43/32), the checks on when to allow different forms of
2302 "control" were broken. There should now be diagnostics for all cases when a
2303 control that does not make sense is encountered.
2304
69358f02
PH
2305 9. Added the /retain_sender option to "control=submission".
2306
5be20824
PH
230710. $recipients is now available in the predata ACL (oversight).
2308
eb2c0248
PH
230911. Tidy the search cache before the fork to do a delivery from a message
2310 received from the command line. Otherwise the child will trigger a lookup
2311 failure and thereby defer the delivery if it tries to use (for example) a
2312 cached ldap connection that the parent has called unbind on.
2313
2a3eea10
PH
231412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2315 of $address_data from the recipient verification was clobbered by the
2316 sender verification.
2317
231813. The value of address_data from a sender verification is now available in
2319 $sender_address_data in subsequent conditions in the ACL statement.
2320
23c7ff99
PH
232114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2322
4deaf07d
PH
232315. Added a new option "connect=<time>" to callout options, to set a different
2324 connection timeout.
2325
926e1192
PH
232616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2327 was its contents. (It was OK if the option was not defined at all.)
2328
650edc6f
PH
232917. A "Completed" log line is now written for messages that are removed from
2330 the spool by the -Mrm option.
2331
2c7db3f5
PH
233218. New variables $sender_verify_failure and $recipient_verify_failure contain
2333 information about exactly what failed.
2334
3d235903
PH
233519. Added -dd to debug only the daemon process.
2336
7c7ad977
PH
233720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2338 handles timeouts, both on the server side and network timeouts. Renamed the
2339 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2340
981756db
PH
234121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2342 It is now set to "smtps".
2343
d4eb88df
PH
234422. $host_address is now set to the target address during the checking of
2345 ignore_target_hosts.
2346
234723. When checking ignore_target_hosts for an ipliteral router, no host name was
2348 being passed; this would have caused $sender_host_name to have been used if
2349 matching the list had actually called for a host name (not very likely,
2350 since this list is usually IP addresses). A host name is now passed as
2351 "[x.x.x.x]".
2352
7d468ab8
PH
235324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2354 code that specifies a non-restarting handler (typically sigaction() in
2355 modern systems) in an attempt to fix a rare and obscure crash bug.
2356
235725. Narrowed the window for a race in the daemon that could cause it to ignore
2358 SIGCHLD signals. This is not a major problem, because they are used only to
2359 wake it up if nothing else does.
2360
62c0818f
PH
236126. A malformed maildirsize file could cause Exim to calculate negative values
2362 for the mailbox size or file count. Odd effects could occur as a result.
2363 The maildirsize information is now recalculated if the size or filecount
2364 end up negative.
2365
26034054
PH
236627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2367 support for a long time. Removed HAVE_SYS_VFS_H.
2368
af66f652
PH
236928. Installed the latest version of exipick from John Jetmore.
2370
90af77f4
PH
237129. In an address list, if the pattern was not a regular expression, an empty
2372 subject address (from a bounce message) matched only if the pattern was an
2373 empty string. Non-empty patterns were not even tested. This was the wrong
2374 because it is perfectly reasonable to use an empty address as part of a
2375 database query. An empty address is now tested by patterns that are
2376 lookups. However, all the other forms of pattern expect the subject to
2377 contain a local part and a domain, and therefore, for them, an empty
2378 address still always fails if the pattern is not itself empty.
2379
d8ef3577
PH
238030. Exim went into a mad DNS loop when attempting to do a callout where the
2381 host was specified on an smtp transport, and looking it up yielded more
2382 than one IP address.
2383
5cb8cbc6
PH
238431. Re-factored the code for checking spool and log partition space into a
2385 function that finds that data and another that does the check. The former
2386 is then used to implement four new variables: $spool_space, $log_space,
2387 $spool_inodes, and $log_inodes.
2388
14702f5b
PH
238932. The RFC2047 encoding function was originally intended for short strings
2390 such as real names; it was not keeping to the 75-character limit for
2391 encoded words that the RFC imposes. It now respects the limit, and
2392 generates multiple encoded words if necessary. To be on the safe side, I
2393 have increased the buffer size for the ${rfc2047: expansion operator from
2394 1024 to 2048 bytes.
2395
063b1e99
PH
239633. It is now permitted to omit both strings after an "if" condition; if the
2397 condition is true, the result is "true". As before, when the second string
2398 is omitted, a false condition yields an empty string. This makes it less
2399 cumbersome to write custom ACL and router conditions.
2400
652e1b65
PH
240134. Failure to deliver a bounce message always caused it to be frozen, even if
2402 there was an errors_to setting on the router. The errors_to setting is now
2403 respected.
2404
6f0c9a4f
PH
240535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2406 canonical form (fully expanded) before being placed in
2407 $sender_host_address.
2408
33397d19
PH
240936. The table in the code that translates DNS record types into text (T_A to
2410 "A" for instance) was missing entries for NS and CNAME. It is just possible
2411 that this could have caused confusion if both these types were looked up
2412 for the same domain, because the text type is used as part of Exim's
2413 per-process caching. But the chance of anyone hitting this buglet seems
2414 very small.
2415
7bb56e1f
PH
241637. The dnsdb lookup has been extended in a number of ways.
2417
2418 (1) There is a new type, "zns", which walks up the domain tree until it
2419 finds some nameserver records. It should be used with care.
2420
ea3bc19b
PH
2421 (2) There is a new type, "mxh", which is like "mx" except that it returns
2422 just the host names, not the priorities.
2423
2424 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2425 looked up. The behaviour when one of the lookups defers can be
2426 controlled by a keyword.
7bb56e1f 2427
ea3bc19b 2428 (4) It is now possible to specify the separator character for use when
7bb56e1f 2429 multiple records are returned.
33397d19 2430
0bcb2a0e
PH
243138. The dnslists ACL condition has been extended: it is now possible to supply
2432 a list of IP addresses and/or domains to be looked up in a particular DNS
2433 domain.
2434
2ac0e484
PH
243539. Added log_selector=+queue_time_overall.
2436
4e1fde53
PH
243740. When running the queue in the test harness, wait just a tad after forking a
2438 delivery process, to get repeatability of debugging output.
2439
de365ded
PH
244041. Include certificate and key file names in error message when GnuTLS fails
2441 to set them up, because the GnuTLS error message doesn't include the name
2442 of the failing file when there is a problem reading it.
2443
f05da2e8
PH
244442. Allow both -bf and -bF in the same test run.
2445
d6453af2
PH
244643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2447
f7b63901
PH
244844. The "Exiscan patch" is now merged into the mainline Exim source.
2449
245045. Sometimes the final signoff response after QUIT could fail to get
2451 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2452 < 0 before doing a fflush(). This bug looks as though it goes back to the
2453 introduction of TLS in release 3.20, but "sometimes" must have been rare
2454 because the tests only now provoked it.
2455
a444213a
PH
245646. Reset the locale to "C" after calling embedded Perl, in case it was changed
2457 (this can affect the format of dates).
2458
0ec020ea
PH
245947. exim_tidydb, when checking for the continued existence of a message for
2460 which it has found a message-specific retry record, was not finding
2461 messages that were in split spool directories. Consequently, it was
2462 deleting retry records that should have stayed in existence.
2463
b1206957
PH
246448. Steve fixed some bugs in eximstats.
2465
246649. The SPA authentication driver was not abandoning authentication and moving
2467 on to the next authenticator when an expansion was forced to fail,
2468 contradicting the general specification for all authenticators. Instead it
2469 was generating a temporary error. It now behaves as specified.
2470
26dd5a95
PH
247150. The default ordering of permitted cipher suites for GnuTLS was pessimal
2472 (the order specifies the preference for clients). The order is now AES256,
2473 AES128, 3DES, ARCFOUR128.
2474
343b2385
PH
247551. Small patch to Sieve code - explicitly set From: when generating an
2476 autoreply.
2477
1c5466b9
PH
247852. Exim crashed if a remote delivery caused a very long error message to be
2479 recorded - for instance if somebody sent an entire SpamAssassin report back
2480 as a large number of 550 error lines. This bug was coincidentally fixed by
2481 increasing the size of one of Exim's internal buffers (big_buffer) that
2482 happened as part of the Exiscan merge. However, to be on the safe side, I
2483 have made the code more robust (and fixed the comments that describe what
2484 is going on).
2485
55ee9ee3
PH
248653. Now that there can be additional text after "Completed" in log lines (if
2487 the queue_time_overall log selector is set), a one-byte patch to exigrep
2488 was needed to allow it to recognize "Completed" as not the last thing in
2489 the line.
2490
d38f8232
PH
249154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2492 patch that reportedly fixes this has been added. I am not expert enough to
2493 create a test for it. This is what the patch creator wrote:
2494
2495 "I found a little strange behaviour of ldap code when working with
2496 Windows 2003 AD Domain, where users was placed in more than one
2497 Organization Units. When I tried to give exim partial DN, the exit code
2498 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2499 But simultaneously result of request was absolutely normal ldap result,
2500 so I produce this patch..."
2501
3295e65b
PH
2502 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2503 REFERENCE, so I have modified the code to exclude the patch when that macro
2504 is not defined.
2505
7102e136
PH
250655. Some experimental protocols are using DNS PTR records for new purposes. The
2507 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2508 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2509 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2510 CAN-2005-0021
7102e136 2511
3ca0ba97
PH
251256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2513
c2bcbe20
PH
251457. Double the size of the debug message buffer (to 2048) so that more of very
2515 long debug lines gets shown.
2516
18ce445d
PH
251758. The exicyclog utility now does better if the number of log files to keep
2518 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2519
1f5b4c3d
PH
252059. Two changes related to the smtp_active_hostname option:
2521
2522 (1) $smtp_active_hostname is now available as a variable.
2523 (2) The default for smtp_banner uses $smtp_active_hostname instead
2524 of $primary_hostname.
2525
b975ba52
PH
252660. The host_aton() function is supposed to be passed a string that is known
2527 to be a valid IP address. However, in the case of IPv6 addresses, it was
2528 not checking this. This is a hostage to fortune. Exim now panics and dies
2529 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2530 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2531 components; fortuitously, this particular loophole had already been fixed
2532 by change 4.50/55 above.
2533
2534 If there are any other similar loopholes, the new check in host_aton()
2535 itself should stop them being exploited. The report I received stated that
2536 data on the command line could provoke the exploit when Exim was running as
2537 exim, but did not say which command line option was involved. All I could
2538 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2539 running as the user.
ea3a6f44 2540 CAN-2005-0021
85b87bc2
PH
2541
254261. There was a buffer overflow vulnerability in the SPA authentication code
2543 (which came originally from the Samba project). I have added a test to the
2544 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2545 CAN-2005-0022
b975ba52 2546
17ffcae7
PH
254762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2548 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2549
d95f9fdb
PH
255063. The daemon start-up calls getloadavg() while still root for those OS that
2551 need the first call to be done as root, but it missed one case: when
2552 deliver_queue_load_max is set with deliver_drop_privilege. This is
2553 necessary for the benefit of the queue runner, because there is no re-exec
2554 when deliver_drop_privilege is set.
2555
86b8287f
PH
255664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2557 This has been fixed.
2558
60dc5e56
PH
255965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2560 was in use, was not putting the data itself into the right store pool;
2561 consequently, it could be overwritten for a subsequent message in the same
2562 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2563 the caching.)
2564
533244af
PH
256566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2566
a5a28604
PH
256767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2568 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2569 the function were treating the return as a boolean value, which happened to
2570 work because 0=false and not-0=true, but is not correct code.
2571
7e634d24
PH
257268. The host_aton() function was not handling scoped IPv6 addresses (those
2573 with, for example, "%eth0" on the end) correctly.
2574
3e11c26b
PH
257569. Fixed some compiler warnings in acl.c for the bitmaps specified with
2576 negated items (that is, ~something) in unsigned ints. Some compilers
2577 apparently mutter when there is no cast.
2578
6729cf78
PH
257970. If an address verification called from an ACL failed, and did not produce a
2580 user-specific message (i.e. there was only a "system" message), nothing was
2581 put in $acl_verify_message. In this situation, it now puts the system
2582 message there.
2583
00f00ca5
PH
258471. Change 4.23/11 added synchronization checking at the start of an SMTP
2585 session; change 4.31/43 added the unwanted input to the log line - except
2586 that it did not do this in the start of session case. It now does.
2587
c9bdd01c
PH
258872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2589 This is wrong and can cause the other end to generate a synchronization
2590 error if it is another Exim or anything else that does the synchronization
2591 check. A QUIT command is no longer sent after a timeout.
2592
d43194df
PH
259373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2594 during host lookups.
2595
fe5b5d0b
PH
259674. The defer_ok option of callout verification was not working if it was used
2597 when verifying addresses in header lines, that is, for this case:
2598
2599 verify = header_sender/callout=defer_ok
2600
76a2d7ba
PH
260175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2602 those file descriptors could be used for SMTP connections. If anything
2603 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2604 could be sent to the SMTP client, causing chaos. The daemon now opens
2605 stdin, stdout, and stderr to /dev/null when it puts itself into the
2606 background.
2607
260876. Arrange for output from Perl's "warn" command to be written to Exim's main
2609 log by default. The user can override this with suitable Perl magic.
2610
04f7d5b9
PH
261177. The use of log_message on a "discard" ACL verb, which is supposed to add to
2612 the log message when discard triggers, was not working for the DATA ACL or
2613 for the non-SMTP ACL.
2614
bc60667e
PH
261578. Error message wording change in sieve.c.
2616
bb6e88ff
PH
261779. If smtp_accept_max_per_host was set, the number of connections could be
2618 restricted to fewer than expected, because the daemon was trying to set up
2619 a new connection before checking whether the processes handling previous
2620 connections had finished. The check for completed processes is now done
2621 earlier. On busy systems, this bug wouldn't be noticed because something
2622 else would have woken the daemon, and it would have reaped the completed
2623 process earlier.
2624
1e70f85b
PH
262580. If a message was submitted locally by a user whose login name contained one
2626 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2627 It caused a spool format error. I have fixed the spool reading code. A
2628 related problem was that the "from" clause in the Received: line became
2629 illegal because of the space(s). It is now covered by ${quote_local_part.
2630
263181. Included the latest eximstats from Steve (adds average sizes to HTML Top
2632 tables).
2633
4e01f9d6
PH
263482. Updated OS/Makefile-AIX as per message from Mike Meredith.
2635
1ee1cef2
PH
263683. Patch from Sieve maintainer to fix unterminated string problem in
2637 "vacation" handling.
2638
6e2b4ccc
PH
263984. Some minor changes to the Linux configuration files to help with other
2640 OS variants using glibc.
2641
8e669ac1
PH
264285. One more patch for Sieve to update vacation handling to latest spec.
2643
495ae4b0 2644
bbe902f0
PH
2645----------------------------------------------------
2646See the note above about the 4.44 and 4.50 releases.
2647----------------------------------------------------
2648
2649
2650Exim version 4.44
2651-----------------
2652
2653 1. Change 4.43/35 introduced a bug that caused file counts to be
2654 incorrectly computed when quota_filecount was set in an appendfile
2655 transport
2656
2657 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2658 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2659 place.
2660
2661 3. Give more explanation in the error message when the command for a transport
2662 filter fails to execute.
2663
2664 4. There are several places where Exim runs a non-Exim command in a
2665 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2666 was being done only for the command run by the queryprogram router. It is
2667 now done for all such subprocesses. The other cases are: ${run, transport
2668 filters, and the commands run by the lmtp and pipe transports.
2669
2670 5. Some older OS have a limit of 256 on the maximum number of file
2671 descriptors. Exim was using setrlimit() to set 1000 as a large value
2672 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2673 systems. I've change it so that if it can't get 1000, it tries for 256.
2674
2675 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2676 was an oversight, and furthermore, ever since the addition of extra
2677 controls (e.g. 4.43/32), the checks on when to allow different forms of
2678 "control" were broken. There should now be diagnostics for all cases when a
2679 control that does not make sense is encountered.
2680
2681 7. $recipients is now available in the predata ACL (oversight).
2682
2683 8. Tidy the search cache before the fork to do a delivery from a message
2684 received from the command line. Otherwise the child will trigger a lookup
2685 failure and thereby defer the delivery if it tries to use (for example) a
2686 cached ldap connection that the parent has called unbind on.
2687
2688 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2689 of $address_data from the recipient verification was clobbered by the
2690 sender verification.
2691
269210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2693 was its contents. (It was OK if the option was not defined at all.)
2694
269511. A "Completed" log line is now written for messages that are removed from
2696 the spool by the -Mrm option.
2697
269812. $host_address is now set to the target address during the checking of
2699 ignore_target_hosts.
2700
270113. When checking ignore_target_hosts for an ipliteral router, no host name was
2702 being passed; this would have caused $sender_host_name to have been used if
2703 matching the list had actually called for a host name (not very likely,
2704 since this list is usually IP addresses). A host name is now passed as
2705 "[x.x.x.x]".
2706
270714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2708 code that specifies a non-restarting handler (typically sigaction() in
2709 modern systems) in an attempt to fix a rare and obscure crash bug.
2710
271115. Narrowed the window for a race in the daemon that could cause it to ignore
2712 SIGCHLD signals. This is not a major problem, because they are used only to
2713 wake it up if nothing else does.
2714
271516. A malformed maildirsize file could cause Exim to calculate negative values
2716 for the mailbox size or file count. Odd effects could occur as a result.
2717 The maildirsize information is now recalculated if the size or filecount
2718 end up negative.
2719
272017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2721 support for a long time. Removed HAVE_SYS_VFS_H.
2722
ea3a6f44 272318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2724
272519. Allow an empty sender to be matched against a lookup in an address list.
2726 Previously the only cases considered were a regular expression, or an
2727 empty pattern.
2728
272920. Exim went into a mad DNS lookup loop when doing a callout where the
2730 host was specified on the transport, if the DNS lookup yielded more than
2731 one IP address.
2732
ea3a6f44
NM
273321. The RFC2047 encoding function was originally intended for short strings
2734 such as real names; it was not keeping to the 75-character limit for
2735 encoded words that the RFC imposes. It now respects the limit, and
2736 generates multiple encoded words if necessary. To be on the safe side, I
2737 have increased the buffer size for the ${rfc2047: expansion operator from
2738 1024 to 2048 bytes.
bbe902f0 2739
ea3a6f44
NM
274022. Failure to deliver a bounce message always caused it to be frozen, even if
2741 there was an errors_to setting on the router. The errors_to setting is now
2742 respected.
bbe902f0
PH
2743
274423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2745 canonical form (fully expanded) before being placed in
2746 $sender_host_address.
2747
274824. Updated eximstats to version 1.33
2749
ea3a6f44
NM
275025. Include certificate and key file names in error message when GnuTLS fails
2751 to set them up, because the GnuTLS error message doesn't include the name
2752 of the failing file when there is a problem reading it.
bbe902f0
PH
2753
275426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2755 As per change 25.
bbe902f0 2756
ea3a6f44
NM
275727. Reset the locale to "C" after calling embedded Perl, in case it was changed
2758 (this can affect the format of dates).
bbe902f0 2759
ea3a6f44
NM
276028. exim_tidydb, when checking for the continued existence of a message for
2761 which it has found a message-specific retry record, was not finding
2762 messages that were in split spool directories. Consequently, it was
2763 deleting retry records that should have stayed in existence.
bbe902f0
PH
2764
276529. eximstats updated to version 1.35
2766 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2767 1.35 - bugfix such that pie charts by volume are generated correctly
2768
ea3a6f44
NM
276930. The SPA authentication driver was not abandoning authentication and moving
2770 on to the next authenticator when an expansion was forced to fail,
2771 contradicting the general specification for all authenticators. Instead it
2772 was generating a temporary error. It now behaves as specified.
bbe902f0 2773
ea3a6f44
NM
277431. The default ordering of permitted cipher suites for GnuTLS was pessimal
2775 (the order specifies the preference for clients). The order is now AES256,
2776 AES128, 3DES, ARCFOUR128.
bbe902f0 2777
ea3a6f44
NM
277831. Small patch to Sieve code - explicitly set From: when generating an
2779 autoreply.
bbe902f0 2780
ea3a6f44
NM
278132. Exim crashed if a remote delivery caused a very long error message to be
2782 recorded - for instance if somebody sent an entire SpamAssassin report back
2783 as a large number of 550 error lines. This bug was coincidentally fixed by
2784 increasing the size of one of Exim's internal buffers (big_buffer) that
2785 happened as part of the Exiscan merge. However, to be on the safe side, I
2786 have made the code more robust (and fixed the comments that describe what
2787 is going on).
bbe902f0 2788
ea3a6f44
NM
278933. Some experimental protocols are using DNS PTR records for new purposes. The
2790 keys for these records are domain names, not reversed IP addresses. The
2791 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2792 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2793 CAN-2005-0021
2794
ea3a6f44
NM
279534. The host_aton() function is supposed to be passed a string that is known
2796 to be a valid IP address. However, in the case of IPv6 addresses, it was
2797 not checking this. This is a hostage to fortune. Exim now panics and dies
2798 if the condition is not met. A case was found where this could be provoked
2799 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2800 components; fortuitously, this particular loophole had already been fixed
2801 by change 4.50/55 or 4.44/33 above.
2802
2803 If there are any other similar loopholes, the new check in host_aton()
2804 itself should stop them being exploited. The report I received stated that
2805 data on the command line could provoke the exploit when Exim was running as
2806 exim, but did not say which command line option was involved. All I could
2807 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2808 running as the user.
bbe902f0
PH
2809 CAN-2005-0021
2810
ea3a6f44
NM
281135. There was a buffer overflow vulnerability in the SPA authentication code
2812 (which came originally from the Samba project). I have added a test to the
2813 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2814 CAN-2005-0022
2815
ea3a6f44
NM
281636. The daemon start-up calls getloadavg() while still root for those OS that
2817 need the first call to be done as root, but it missed one case: when
2818 deliver_queue_load_max is set with deliver_drop_privilege. This is
2819 necessary for the benefit of the queue runner, because there is no re-exec
2820 when deliver_drop_privilege is set.
bbe902f0 2821
ea3a6f44
NM
282237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2823 was in use, was not putting the data itself into the right store pool;
2824 consequently, it could be overwritten for a subsequent message in the same
2825 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2826 the caching.)
bbe902f0 2827
ea3a6f44
NM
282838. Sometimes the final signoff response after QUIT could fail to get
2829 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2830 < 0 before doing a fflush(). This bug looks as though it goes back to the
2831 introduction of TLS in release 3.20, but "sometimes" must have been rare
2832 because the tests only now provoked it.
bbe902f0
PH
2833
2834
495ae4b0
PH
2835Exim version 4.43
2836-----------------
2837
2838 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2839 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2840 Now it returns an integer. A number of calls were still expecting a T/F
2841 return. Fortuitously, in all cases, the tests worked in OK situations,
2842 which is the norm. However, things would have gone wrong on any write
2843 failures on the smtp file descriptor. This function is used when sending
2844 messages over SMTP and also when doing verify callouts.
2845
2846 2. When Exim is called to do synchronous delivery of a locally submitted
2847 message (the -odf or -odi options), it no longer closes stderr before doing
2848 the delivery.
2849
2850 3. Implemented the mua_wrapper option.
2851
2852 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2853
2854 5. Implemented the functions header_remove(), header_testname(),
2855 header_add_at_position(), and receive_remove_recipient(), and exported them
2856 to local_scan().
2857
2858 6. If an ACL "warn" statement specified the addition of headers, Exim already
2859 inserted X-ACL-Warn: at the start if there was no header name. However, it
2860 was not making this test for the second and subsequent header lines if
2861 there were newlines in the string. This meant that an invalid header could
2862 be inserted if Exim was badly configured.
2863
2864 7. Allow an ACL "warn" statement to add header lines at the start or after all
2865 the Received: headers, as well as at the end.
2866
2867 8. Added the rcpt_4xx retry error code.
2868
2869 9. Added postmaster_mailfrom=xxx to callout verification option.
2870
287110. Added mailfrom=xxxx to the callout verification option, for verify=
2872 header_sender only.
2873
287411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2875 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2876
287712. Inserted some casts to stop certain compilers warning when using pointer
2878 differences as field lengths or precisions in printf-type calls (mostly
2879 affecting debugging statements).
2880
288113. Added optional readline() support for -be (dynamically loaded).
2882
288314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2884 same clock tick as a message's arrival, so that its received time was the
2885 same as the "first fail" time on the retry record, and that message
2886 remained on the queue past the ultimate address timeout, every queue runner
2887 would try a delivery (because it was past the ultimate address timeout) but
2888 after another failure, the ultimate address timeout, which should have then
2889 bounced the address, did not kick in. This was a "< instead of <=" error;
2890 in most cases the first failure would have been in the next clock tick
2891 after the received time, and all would be well.
2892
289315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2894 being recognized when the domain list was tested by the match_domain
2895 condition in an expansion string.
2896
289716. Added the ${str2b64: operator.
2898
289917. Exim was always calling setrlimit() to set a large limit for the number of
2900 processes, without checking whether the existing limit was already
2901 adequate. (It did check for the limit on file descriptors.) Furthermore,
2902 errors from getrlimit() and setrlimit() were being ignored. Now they are
2903 logged to the main and panic logs, but Exim does carry on, to try to do its
2904 job under whatever limits there are.
2905
290618. Imported PCRE 5.0.
2907
290819. Trivial typo in log message " temporarily refused connection" (the leading
2909 space).
2910
291120. If the log selector return_path_on_delivery was set and an address was
2912 redirected to /dev/null, the delivery process crashed because it assumed
2913 that a return path would always be set for a "successful" delivery. In this
2914 case, the whole delivery is bypassed as an optimization, and therefore no
2915 return path is set.
2916
291721. Internal re-arrangement: the function for sending a challenge and reading
2918 a response while authentication was assuming a zero-terminated challenge
2919 string. It's now changed to take a pointer and a length, to allow for
2920 binary data in such strings.
2921
292222. Added the cyrus_sasl authenticator (code supplied by MBM).
2923
292423. Exim was not respecting finduser_retries when seeking the login of the
2925 uid under which it was called; it was always trying 10 times. (The default
2926 setting of finduser_retries is zero.) Also, it was sleeping after the final
2927 failure, which is pointless.
2928
292924. Implemented tls_on_connect_ports.
2930
293125. Implemented acl_smtp_predata.
2932
293326. If the domain in control=submission is set empty, Exim assumes that the
2934 authenticated id is a complete email address when it generates From: or
2935 Sender: header lines.
2936
293727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2938 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2939 chown and chgrp in /bin and hostname in /usr/bin.
2940
294128. Exim was keeping the "process log" file open after each use, just as it
2942 does for the main log. This opens the possibility of it remaining open for
2943 long periods when the USR1 signal hits a daemon. Occasional processlog
2944 errors were reported, that could have been caused by this. Anyway, it seems
2945 much more sensible not to leave this file open at all, so that is what now
2946 happens.
2947
294829. The long-running daemon process does not normally write to the log once it
2949 has entered its main loop, and it closes the log before doing so. This is
2950 so that log files can straightforwardly be renamed and moved. However,
2951 there are a couple of unusual error situations where the daemon does write
2952 log entries, and I had neglected to close the log afterwards.
2953
295430. The text of an SMTP error response that was received during a remote
2955 delivery was being truncated at 512 bytes. This is too short for some of
2956 the long messages that one sometimes sees. I've increased the limit to
2957 1024.
2958
295931. It is now possible to make retry rules that apply only when a message has a
2960 specific sender, in particular, an empty sender.
2961
296232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2963 it possible to be selective about when SMTP synchronization is enforced.
2964
296533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2966
296732. Implemented hosts_connection_nolog.
2968
296933. Added an ACL for QUIT.
2970
297134. Setting "delay_warning=" to disable warnings was not working; it gave a
2972 syntax error.
2973
297435. Added mailbox_size and mailbox_filecount to appendfile.
2975
297636. Added control = no_multiline_responses to ACLs.
2977
297837. There was a bug in the logic of the code that waits for the clock to tick
2979 in the case where the clock went backwards by a substantial amount such
2980 that the microsecond fraction of "now" was more than the microsecond
2981 fraction of "then" (but the whole seconds number was less).
2982
298338. Added support for the libradius Radius client library this is found on
2984 FreeBSD (previously only the radiusclient library was supported).
2985
2986
2987Exim version 4.42
2988-----------------
2989
2990 1. When certain lookups returned multiple values in the form name=value, the
2991 quoting of the values was not always being done properly. Specifically:
2992 (a) If the value started with a double quote, but contained no whitespace,
2993 it was not quoted.
2994 (b) If the value contained whitespace other than a space character (i.e.
2995 tabs or newlines or carriage returns) it was not quoted.
2996 This fix has been applied to the mysql and pgsql lookups by writing a
2997 separate quoting function and calling it from the lookup code. The fix
2998 should probably also be applied to nisplus, ibase and oracle lookups, but
2999 since I cannot test any of those, I have not disturbed their existing code.
3000
3001 2. A hit in the callout cache for a specific address caused a log line with no
3002 reason for rejecting RCPT. Now it says "Previous (cached) callout
3003 verification failure".
3004
3005 3. There was an off-by-one bug in the queryprogram router. An over-long
3006 return line was truncated at 256 instead of 255 characters, thereby
3007 overflowing its buffer with the terminating zero. As well as fixing this, I
3008 have increased the buffer size to 1024 (and made a note to document this).
3009
3010 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3011 when Exim is waiting for an SMTP response from a remote server, Exim
3012 restarts its select() call on the socket, thereby resetting its timeout.
3013 This is not a problem when such interrupts are rare. Somebody set up a cron
3014 job to run exiwhat every 2 minutes, which is less than the normal select()
3015 timeout (5 or 10 minutes). This meant that the select() timeout never
3016 kicked in because it was always reset. I have fixed this by comparing the
3017 time when an interrupt arrives with the time at the start of the first call
3018 to select(). If more time than the timeout has elapsed, the interrupt is
3019 treated as a timeout.
3020
3021 5. Some internal re-factoring in preparation for the addition of Sieve
3022 extensions (by MH). In particular, the "personal" test is moved to a
3023 separate function, and given an option for scanning Cc: and Bcc: (which is
3024 not set for Exim filters).
3025
3026 6. When Exim created an email address using the login of the caller as the
3027 local part (e.g. when creating a From: or Sender: header line), it was not
3028 quoting the local part when it contained special characters such as @.
3029
3030 7. Installed new OpenBSD configuration files.
3031
3032 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3033 try to make them clearer.
3034
3035 9. Callout options, other than the timeout value, were being ignored when
3036 verifying sender addresses in header lines. For example, when using
3037
3038 verify = header_sender/callout=no_cache
3039
3040 the cache was (incorrectly) being used.
3041
304210. Added a missing instance of ${EXE} to the exim_install script; this affects
3043 only the Cygwin environment.
3044
304511. When return_path_on_delivery was set as a log selector, if different remote
3046 addresses in the same message used different return paths and parallel
3047 remote delivery occurred, the wrong values would sometimes be logged.
3048 (Whenever a remote delivery process finished, the return path value from
3049 the most recently started remote delivery process was logged.)
3050
305112. RFC 3848 specifies standard names for the "with" phrase in Received: header
3052 lines when AUTH and/or TLS are in use. This is the "received protocol"
3053 field. Exim used to use "asmtp" for authenticated SMTP, without any
3054 indication (in the protocol name) for TLS use. Now it follows the RFC and
3055 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3056 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3057 names appear in log lines as well as in Received: header lines.
3058
305913. Installed MH's patches for Sieve to add the "copy" and "vacation"
3060 extensions, and comparison tests, and to fix some bugs.
3061
306214. Changes to the "personal" filter test:
3063
3064 (1) The test was buggy in that it was just doing the equivalent of
3065 "contains" tests on header lines. For example, if a user's address was
3066 anne@some.where, the "personal" test would incorrectly be true for
3067
3068 To: susanne@some.where
3069
3070 This test is now done by extracting each address from the header in turn,
3071 and checking the entire address. Other tests that are part of "personal"
3072 are now done using regular expressions (for example, to check local parts
3073 of addresses in From: header lines).
3074
3075 (2) The list of non-personal local parts in From: addresses has been
3076 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3077 taken from the Sieve specification recommendations.
3078
3079 (3) If the message contains any header line starting with "List-" it is
3080 treated as non-personal.
3081
3082 (4) The test for "circular" in the Subject: header line has been removed
3083 because it now seems ill-conceived.
3084
308515. Minor typos in src/EDITME comments corrected.
3086
308716. Installed latest exipick from John Jetmore.
3088
308917. If headers_add on a router specified a text string that was too long for
3090 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3091 of string_sprintf() is now avoided.
3092
309318. $message_body_size was not set (it was always zero) when running the DATA
3094 ACL and the local_scan() function.
3095
309619. For the "mail" command in an Exim filter, no default was being set for
3097 the once_repeat time, causing a random time value to be used if "once" was
3098 specified. (If the value happened to be <= 0, no repeat happened.) The
3099 default is now 0s, meaning "never repeat". The "vacation" command was OK
3100 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3101 (I found it when inspecting the code).
3102
310320. There is now an overall timeout for performing a callout verification. It
3104 defaults to 4 times the callout timeout, which applies to individual SMTP
3105 commands during the callout. The overall timeout applies when there is more
3106 than one host that can be tried. The timeout is checked before trying the
3107 next host. This prevents very long delays if there are a large number of
3108 hosts and all are timing out (e.g. when the network connections are timing
3109 out). The value of the overall timeout can be changed by specifying an
3110 additional sub-option for "callout", called "maxwait". For example:
3111
3112 verify = sender/callout=5s,maxwait=20s
3113
311421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3115 to the end before writing, but this should make it even safer).
3116
311722. Exim was forgetting that it had advertised PIPELINING for the second and
3118 subsequent messages on an SMTP connection. It was also not resetting its
3119 memory on STARTTLS and an internal HELO.
3120
312123. When Exim logs an SMTP synchronization error within a session, it now
3122 records whether PIPELINING has been advertised or not.
3123
312424. Added 3 instances of "(long int)" casts to time_t variables that were being
3125 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3126 rather than long int.
3127
312825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3129
313026. Added the never_mail option to autoreply.
3131
3132
3133Exim version 4.41
3134-----------------
3135
3136 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3137 crash if the getsockname() call failed; this can happen if a connection is
3138 closed very soon after it is established. The problem was simply in the
3139 order in which certain operations were done, causing Exim to try to write
3140 to the SMTP stream before it had set up the file descriptor. The bug has
3141 been fixed by making things happen in the correct order.
3142
3143
3144Exim version 4.40
3145-----------------
3146
3147 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3148 before the connection was closed, thus losing the rejection response.
3149
3150 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3151 some early Solaris releases, but causes trouble in current releases where
3152 socklen_t is defined.
3153
3154 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3155 always exist.
3156
3157 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3158 configured.
3159
3160 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3161 that releasing the top of it at the end releases what was used for sub-
3162 expansions (unless the block got too big). However, discard this block if
3163 the first thing is a variable or header, so that we can use its block when
3164 it is dynamic (useful for very large $message_headers, for example).
3165
3166 6. Lookups now cache *every* query, not just the most recent. A new, separate
3167 store pool is used for this. It can be recovered when all lookup caches are
3168 flushed. Lookups now release memory at the end of their result strings.
3169 This has involved some general refactoring of the lookup sources.
3170
3171 7. Some code has been added to the store_xxx() functions to reduce the amount
3172 of flapping under certain conditions.
3173
3174 8. log_incoming_interface used to affect only the <= reception log lines. Now
3175 it causes the local interface and port to be added to several more SMTP log
3176 lines, for example "SMTP connection from", and rejection lines.
3177
3178 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3179
318010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3181
318211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3183 could be overwritten at the end of the current message (or the start of a
3184 new message if it was set in a HELO ACL). The value is now preserved for
3185 the duration of the SMTP connection.
3186
318712. If a transport had a headers_rewrite setting, and a matching header line
3188 contained an unqualified address, that address was qualified, even if it
3189 did not match any rewriting rules. The underlying bug was that the values
3190 of the flags that permit the existence of unqualified sender and recipient
3191 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3192 non-local messages, and by -bnq for local messages) were not being
3193 preserved with the message after it was received.
3194
319513. When Exim was logging an SMTP synchronization error, it could sometimes log
3196 "next input=" as part of the text comprising the host identity instead of
3197 the correct text. The code was using the same buffer for two different
3198 strings. However, depending on which order the printing function evaluated
3199 its arguments, the bug did not always show up. Under Linux, for example, my
3200 test suite worked just fine.
3201
320214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3203 doesn't work with some older versions of Perl. It has been changed to "my",
3204 which in any case is probably the better facility to use.
3205
320615. A really picky compiler found some instances of statements for creating
3207 error messages that either had too many or two few arguments for the format
3208 string.
3209
321016. The size of the buffer for calls to the DNS resolver has been increased
3211 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3212 for addresses that have a lot of PTR records. This alleviates a problem; it
3213 does not fully solve it.
3214
321517. A dnsdb lookup for PTR records that receives more data than will fit in the
3216 buffer now truncates the list and logs the incident, which is the same
3217 action as happens when Exim is looking up a host name and its aliases.
3218 Previously in this situation something unpredictable would happen;
3219 sometimes it was "internal error: store_reset failed".
3220
322118. If a server dropped the connection unexpectedly when an Exim client was
3222 using GnuTLS and trying to read a response, the client delivery process
3223 crashed while trying to generate an error log message.
3224
322519. If a "warn" verb in an ACL added multiple headers to a message in a single
3226 string, for example:
3227
3228 warn message = H1: something\nH2: something
3229
3230 the text was added as a single header line from Exim's point of view
3231 though it ended up OK in the delivered message. However, searching for the
3232 second and subsequent header lines using $h_h2: did not work. This has been
3233 fixed. Similarly, if a system filter added multiple headers in this way,
3234 the routers could not see them.
3235
323620. Expanded the error message when iplsearch is called with an invalid key to
3237 suggest using net-iplsearch in a host list.
3238
323921. When running tests using -bh, any delays imposed by "delay" modifiers in
3240 ACLs are no longer actually imposed (and a message to that effect is
3241 output).
3242
324322. If a "gecos" field in a passwd entry contained escaped characters, in
3244 particular, if it contained a \" sequence, Exim got it wrong when building
3245 a From: or a Sender: header from that name. A second bug also caused
3246 incorrect handling when an unquoted " was present following a character
3247 that needed quoting.
3248
324923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3250 was not being matched caselessly.
3251
325224. Arranged for all hyphens in the exim.8 source to be escaped with
3253 backslashes.
3254
325525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3256 properly. Recipient callout cache records were still being keyed to include
3257 the sender, even when use_sender was set false. This led to far more
3258 callouts that were necessary. The sender is no longer included in the key
3259 when use_sender is false.
3260
326126. Added "control = submission" modifier to ACLs.
3262
326327. Added the ${base62d: operator to decode base 62 numbers.
3264
326528. dnsdb lookups can now access SRV records.
3266
326729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3268 the configuration file.
3269
327030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3271 (-v) mode. This makes the output for a verbose queue run more intelligible.
3272
327331. Added a use_postmaster feature to recipient callouts.
3274
327532. Added the $body_zerocount variable, containing the number of binary zero
3276 bytes in the message body.
3277
327833. The time of last modification of the "new" subdirectory is now used as the
3279 "mailbox time last read" when there is a quota error for a maildir
3280 delivery.
3281
328234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3283
328435. Added +ignore_unknown as a special item in host lists.
3285
328636. Code for decoding IPv6 addresses in host lists is now included, even if
3287 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3288 address was recognized as an IP address, but was then not correctly decoded
3289 into binary, causing unexpected and incorrect effects when compared with
3290 another IP address.
3291
3292
3293Exim version 4.34
3294-----------------
3295
3296 1. Very minor rewording of debugging text in manualroute to say "list of
3297 hosts" instead of "hostlist".
3298
3299 2. If verify=header_syntax was set, and a header line with an unqualified
3300 address (no domain) and a large number of spaces between the end of the
3301 name and the colon was received, the reception process suffered a buffer
3302 overflow, and (when I tested it) crashed. This was caused by some obsolete
3303 code that should have been removed. The fix is to remove it!
3304
3305 3. When running in the test harness, delay a bit after writing a bounce
3306 message to get a bit more predictability in the log output.
3307
3308 4. Added a call to search_tidyup() just before forking a reception process. In
3309 theory, someone could use a lookup in the expansion of smtp_accept_max_
3310 per_host which, without the tidyup, could leave open a database connection.
3311
3312 5. Added the variables $recipient_data and $sender_data which get set from a
3313 lookup success in an ACL "recipients" or "senders" condition, or a router
3314 "senders" option, similar to $domain_data and $local_part_data.
3315
3316 6. Moved the writing of debug_print from before to after the "senders" test
3317 for routers.
3318
3319 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3320 problems for message scanning, either using a data ACL, or using
3321 local_scan() because the Received: header was not generated till after they
3322 were called (in order to set the time as the time of reception completion).
3323 I have revised the way this works. The header is now generated after the
3324 body is received, but before the ACL or local_scan() are called. After they
3325 are run, the timestamp in the header is updated.
3326
3327
3328Exim version 4.33
3329-----------------
3330
3331 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3332 before starting a queue runner without re-exec. This happened only when
3333 deliver_drop_privilege was set or when the Exim user was set to root. The
3334 effect of the bug was that timeouts during subsequent deliveries caused
3335 crashes instead of being properly handled. The handler is now left at its
3336 default (and expected) setting.
3337
3338 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3339 message, again when deliver_drop_privilege is set or Exim is run as root.
3340 The bug described in (1) was not present in this case, but the tidying up
3341 of the other signals was missing. I have made the two cases consistent.
3342
3343 3. The ignore_target_hosts setting on a manualroute router was being ignored
3344 for hosts that were looked up using the /MX notation.
3345
3346 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3347 in domain lists.
3348
3349 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3350 operated on the sender address. After changing the $sender_address to <>
3351 for the sender address verify, Exim was re-instated it as the original
3352 (before rewriting) address, but remembering that it had rewritten it, so it
3353 wasn't rewriting it again. This bug also had the effect of breaking the
3354 sender address verification caching when the sender address was rewritten.
3355
3356 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3357 This has been changed so that if the ip literal address matches
3358 ignore_target_hosts, the router declines.
3359
3360 7. Added expansion conditions match_domain, match_address, and match_local_
3361 part (NOT match_host).
3362
3363 8. The placeholder for the Received: header didn't have a length field set.
3364
3365 9. Added code to Exim itself and to exim_lock to test for a specific race
3366 condition that could lead to file corruption when using MBX delivery. The
3367 issue is with the lockfile that is created in /tmp. If this file is removed
3368 after a process has opened it but before that process has acquired a lock,
3369 there is the potential for a second process to recreate the file and also
3370 acquire a lock. This could lead to two Exim processes writing to the file
3371 at the same time. The added code performs the same test as UW imapd; it
3372 checks after acquiring the lock that its file descriptor still refers to
3373 the same named file.
3374
337510. The buffer for building added header lines was of fixed size, 8192 bytes.
3376 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3377 when Exim is built.
3378
337911. Added the smtp_active_hostname option. If used, this will typically be made
3380 to depend on the incoming interface address. Because $interface_address is
3381 not set up until the daemon has forked a reception process, error responses
3382 that can happen earlier (such as "too many connections") no longer contain
3383 a host name.
3384
338512. If an expansion in a condition on a "warn" statement fails because a lookup
3386 defers, the "warn" statement is abandoned, and the next ACL statement is
3387 processed. Previously this caused the whole ACL to be aborted.
3388
338913. Added the iplsearch lookup type.
3390
339114. Added ident_timeout as a log selector.
3392
339315. Added tls_certificate_verified as a log selector.
3394
339516. Added a global option tls_require_ciphers (compare the smtp transport
3396 option of the same name). This controls incoming TLS connections.
3397
339817. I finally figured out how to make tls_require_ciphers do a similar thing
3399 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3400 before starting the TLS session.
3401
340218. Tabs are now shown as \t in -bP output.
3403
340419. If the log selector return_path_on_delivery was set, Exim crashed when
3405 bouncing a message because it had too many Received: header lines.
3406
340720. If two routers both had headers_remove settings, and the first one included
3408 a superfluous trailing colon, the final name in the first list and the
3409 first name in the second list were incorrectly joined into one item (with a
3410 colon in the middle).
3411
3412
3413Exim version 4.32
3414-----------------
3415
3416 1. Added -C and -D options to the exinext utility, mainly to make it easier
3417 to include in the automated testing, but these could be helpful when
3418 multiple configurations are in use.
3419
3420 2. The exinext utility was not formatting the output nicely when there was
3421 an alternate port involved in the retry record key, nor when there was a
3422 message id as well (for retries that were specific to a specific message
3423 and a specific host). It was also confused by IPv6 addresses, because of
3424 the additional colons they contain. I have fixed the IPv4 problem, and
3425 patched it up to do a reasonable job for IPv6.
3426
3427 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3428 delivery, the log line now contains "pipelined" if PIPELINING was used.
3429
3430 4. An SMTP transport process used to panic and die if the bind() call to set
3431 an explicit outgoing interface failed. This has been changed; it is now
3432 treated in the same way as a connect() failure.
3433
3434 5. A reference to $sender_host_name in the part of a conditional expansion
3435 that was being skipped was still causing a DNS lookup. This no longer
3436 occurs.
3437
3438 6. The def: expansion condition was not recognizing references to header lines
3439 that used bh_ and bheader_.
3440
3441 7. Added the _cache feature to named lists.
3442
3443 8. The code for checking quota_filecount in the appendfile transport was
3444 allowing one more file than it should have been.
3445
3446 9. For compatibility with Sendmail, the command line option
3447
3448 -prval:sval
3449
3450 is equivalent to
3451
3452 -oMr rval -oMs sval
3453
3454 and sets the incoming protocol and host name (for trusted callers). The
3455 host name and its colon can be omitted when only the protocol is to be set.
3456 Note the Exim already has two private options, -pd and -ps, that refer to
3457 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3458 "s", but I don't think that's a major issue.
3459
346010. A number of refactoring changes to the code, none of which should affect
3461 Exim's behaviour:
3462
3463 (a) The number of logging options was getting close to filling up the
3464 32-bit word that was used as a bit map. I have split them into two classes:
3465 those that are passed in the argument to log_write(), and those that are
3466 only ever tested independently outside of that function. These are now in
3467 separate 32-bit words, so there is plenty of room for expansion again.
3468 There is no change in the user interface or the logging behaviour.
3469
3470 (b) When building, for example, log lines, the code previously used a
3471 macro that called string_cat() twice, in order to add two strings. This is
3472 not really sufficiently general. Furthermore, there was one instance where
3473 it was actually wrong because one of the argument was used twice, and in
3474 one call a function was used. (As it happened, calling the function twice
3475 did not affect the overall behaviour.) The macro has been replaced by a
3476 function that can join an arbitrary number of extra strings onto a growing
3477 string.
3478
3479 (c) The code for expansion conditions now uses a table and a binary chop
3480 instead of a serial search (which was left over from when there were very
3481 few conditions). Also, it now recognizes conditions like "pam" even when
3482 the relevant support is not compiled in: a suitably worded error message is
3483 given if an attempt is made to use such a condition.
3484
348511. Added ${time_interval:xxxxx}.
3486
348712. A bug was causing one of the ddress fields not to be passed back correctly
3488 from remote delivery subprocesses. The field in question was not being
3489 subsequently used, so this caused to problems in practice.
3490
349113. Added new log selectors queue_time and deliver_time.
3492
349314. Might have fixed a bug in maildirsizefile handling that threw up
3494 "unexpected character" debug warnings, and recalculated the data
3495 unnecessarily. In any case, I expanded the warning message to give more
3496 information.
3497
349815. Added the message "Restricted characters in address" to the statements in
3499 the default ACL that block characters like @ and % in local parts.
3500
350116. Change 71 for release 4.31 proved to be much less benign that I imagined.
3502 Three changes have been made:
3503
3504 (a) There was a serious bug; a negative response to MAIL caused the whole
3505 recipient domain to be cached as invalid, thereby blocking all messages
3506 to all local parts at the same domain, from all senders. This bug has
3507 been fixed. The domain is no longer cached after a negative response to
3508 MAIL if the sender used is not empty.
3509
3510 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3511 been restored.
3512
3513 (c) A new callout option, "use_sender" has been added for people who want
3514 the modified behaviour.
3515
3516
3517Exim version 4.31
3518-----------------
3519
3520 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3521 Larry Rosenman.
3522
3523 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3524 indeed breaks things for older releases.
3525
3526 3. Added additional logging to the case where there is a problem reading data
3527 from a filter that is running in a subprocess using a pipe, in order to
3528 try to track down a specific problem.
3529
3530 4. Testing facility fudge: when running in the test harness and attempting
3531 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3532 getting "No route to host". Convert this to a timeout.
3533
3534 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3535 warning.
3536
3537 6. Some OS don't have socklen_t but use size_t instead. This affects the
3538 fifth argument of getsockopt() amongst other things. This is now
3539 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3540 can be set for individual OS. I have set it for SunOS5, OSF1, and
3541 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3542 some earlier ones do not.
3543
3544 7. Change 4.30/15 was not doing the test caselessly.
3545
3546 8. The standard form for an IPv6 address literal was being rejected by address
3547 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3548 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3549 this, as well as the form without the "IPv6" on the front (but only when
3550 address literals are enabled, of course).
3551
3552 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3553
355410. Exim crashed if a message with an empty sender address specified by -f
3555 encountered a router with an errors_to setting. T