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185b5456 MW |
1 | ### -*-m4-*- |
2 | ### | |
3 | ### Basic settings for distorted.org.uk Exim configuration | |
4 | ### | |
5 | ### (c) 2012 Mark Wooding | |
6 | ### | |
7 | ||
8 | ###----- Licensing notice --------------------------------------------------- | |
9 | ### | |
10 | ### This program is free software; you can redistribute it and/or modify | |
11 | ### it under the terms of the GNU General Public License as published by | |
12 | ### the Free Software Foundation; either version 2 of the License, or | |
13 | ### (at your option) any later version. | |
14 | ### | |
15 | ### This program is distributed in the hope that it will be useful, | |
16 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ### GNU General Public License for more details. | |
19 | ### | |
20 | ### You should have received a copy of the GNU General Public License | |
21 | ### along with this program; if not, write to the Free Software Foundation, | |
22 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | ||
24 | ###-------------------------------------------------------------------------- | |
25 | ### Global settings. | |
26 | ||
27 | SECTION(global, priv)m4_dnl | |
b1d083dd | 28 | admin_groups = CONF_admin_groups |
e8fc7835 | 29 | trusted_groups = CONF_trusted_groups |
185b5456 MW |
30 | prod_requires_admin = false |
31 | ||
32 | SECTION(global, logging)m4_dnl | |
33 | log_file_path = : syslog | |
34 | log_selector = \ | |
35 | +smtp_confirmation \ | |
36 | +tls_peerdn | |
37 | log_timezone = true | |
38 | syslog_duplication = false | |
39 | syslog_timestamp = false | |
40 | ||
41 | SECTION(global, daemon)m4_dnl | |
42 | local_interfaces = <; CONF_interfaces | |
ad4e4191 | 43 | extra_local_interfaces = <; 0.0.0.0 ; ::0 |
185b5456 MW |
44 | |
45 | SECTION(global, resource)m4_dnl | |
46 | deliver_queue_load_max = 8 | |
47 | queue_only_load = 12 | |
48 | smtp_accept_max = 16 | |
49 | smtp_accept_queue = 32 | |
50 | smtp_accept_reserve = 4 | |
51 | smtp_load_reserve = 10 | |
52 | smtp_reserve_hosts = +trusted | |
53 | ||
54 | SECTION(global, policy)m4_dnl | |
55 | host_lookup = * | |
56 | ||
57 | SECTION(global, users)m4_dnl | |
58 | gecos_name = $1 | |
59 | gecos_pattern = ([^,:]*) | |
60 | ||
61 | SECTION(global, incoming)m4_dnl | |
ceb81bc4 MW |
62 | rfc1413_hosts = * |
63 | rfc1413_query_timeout = 10s | |
185b5456 | 64 | received_header_text = Received: \ |
2cf9db84 | 65 | ${if def:sender_rcvhost \ |
9384ef4f | 66 | {from $sender_rcvhost\n\t} \ |
2cf9db84 MW |
67 | {${if def:sender_ident \ |
68 | {from ${quote_local_part:$sender_ident} }}}}\ | |
185b5456 | 69 | by $primary_hostname \ |
b92689d6 MW |
70 | (Exim $version_number)\ |
71 | ${if def:tls_cipher {\n\t} { }}\ | |
185b5456 MW |
72 | ${if def:received_protocol \ |
73 | {with $received_protocol \ | |
b92689d6 | 74 | ${if def:tls_cipher {(cipher=$tls_cipher)}}}}\n\t\ |
185b5456 | 75 | ${if def:sender_address \ |
43e6fc69 | 76 | {(envelope-from $sender_address\ |
185b5456 | 77 | ${if def:authenticated_id \ |
8fa6a843 MW |
78 | {; auth=${quote_local_part:$authenticated_id}} \ |
79 | {${if and {{def:authenticated_sender} \ | |
80 | {match_address{$authenticated_sender} \ | |
81 | {*@CONF_master_domain}}} \ | |
82 | {; auth=${quote_local_part:\ | |
83 | ${local_part:\ | |
84 | $authenticated_sender}}}}}})\n\t}}\ | |
185b5456 MW |
85 | id $message_exim_id\ |
86 | ${if def:received_for {\n\tfor $received_for}} | |
87 | ||
88 | SECTION(global, smtp)m4_dnl | |
89 | smtp_return_error_details = true | |
90 | accept_8bitmime = true | |
e3c9c427 | 91 | chunking_advertise_hosts = |
185b5456 | 92 | |
5918499b MW |
93 | SECTION(global, env)m4_dnl |
94 | keep_environment = | |
95 | ||
185b5456 MW |
96 | SECTION(global, process)m4_dnl |
97 | extract_addresses_remove_arguments = false | |
98 | headers_charset = utf-8 | |
99 | qualify_domain = CONF_master_domain | |
12d3b444 | 100 | untrusted_set_sender = * |
75c86bd1 MW |
101 | local_from_check = false |
102 | local_sender_retain = true | |
185b5456 MW |
103 | |
104 | SECTION(global, bounce)m4_dnl | |
105 | delay_warning = 1h : 24h : 2d | |
106 | ||
6aae076f | 107 | SECTION(global, tls)m4_dnl |
163774f0 | 108 | tls_certificate = CONF_sysconf_dir/server.certlist |
6aae076f MW |
109 | tls_privatekey = CONF_sysconf_dir/server.key |
110 | tls_advertise_hosts = ${if exists {CONF_sysconf_dir/server.key} {*}{}} | |
111 | tls_dhparam = CONF_ca_dir/dh-param-2048.pem | |
112 | tls_require_ciphers = ${if or {{={$received_port}{CONF_submission_port}} \ | |
113 | {match_ip {$sender_host_address}{+trusted}}} \ | |
114 | {CONF_good_ciphers} \ | |
115 | {CONF_acceptable_ciphers}} | |
116 | tls_verify_certificates = CONF_ca_dir/ca.cert | |
117 | tls_verify_hosts = ${if eq{$acl_c_mode}{submission} {} {+allnets}} | |
118 | ||
185b5456 MW |
119 | DIVERT(null) |
120 | ###-------------------------------------------------------------------------- | |
121 | ### Access control lists. | |
122 | ||
123 | SECTION(global, acl-after) | |
124 | SECTION(global, acl)m4_dnl | |
125 | acl_smtp_helo = helo | |
126 | SECTION(acl, misc)m4_dnl | |
127 | helo: | |
fe8f2338 MW |
128 | ## Check that the caller's claimed identity is actually plausible. |
129 | ## This seems like it's a fairly effective filter on spamminess, but | |
130 | ## it's too blunt a tool. Rather than reject, add a warning header. | |
131 | ## Only we can't do this the easy way, so save it up for use in MAIL. | |
132 | ## Also, we're liable to get a subsequent HELO (e.g., after STARTTLS) | |
133 | ## and we should only care about the most recent one. | |
134 | warn set acl_c_helo_warning = false | |
4ff4ad42 MW |
135 | !condition = \ |
136 | ${if and {{match_ip {$sender_host_address} \ | |
137 | {<; 127.0.0.0/8 ; ::1}} \ | |
138 | {match_domain {$sender_helo_name} \ | |
139 | {localhost : +thishost}}}} | |
fe8f2338 MW |
140 | !condition = \ |
141 | ${if exists {CONF_sysconf_dir/helo.conf} \ | |
142 | {${lookup {$sender_helo_name} \ | |
143 | partial0-lsearch \ | |
144 | {CONF_sysconf_dir/helo.conf} \ | |
145 | {${if match_ip \ | |
146 | {$sender_host_address} \ | |
4587a704 | 147 | {<; $value}}}}}} |
fe8f2338 MW |
148 | !verify = helo |
149 | set acl_c_helo_warning = true | |
185b5456 MW |
150 | |
151 | accept | |
152 | ||
284c9d7e MW |
153 | SECTION(global, acl)m4_dnl |
154 | acl_not_smtp_start = not_smtp_start | |
155 | SECTION(acl, misc)m4_dnl | |
156 | not_smtp_start: | |
157 | ## Record the user's name. | |
158 | warn set acl_c_user = $sender_ident | |
e9015968 | 159 | set acl_m_user = $sender_ident |
284c9d7e MW |
160 | |
161 | ## Done. | |
162 | accept | |
163 | ||
185b5456 MW |
164 | SECTION(global, acl)m4_dnl |
165 | acl_smtp_mail = mail | |
166 | SECTION(acl, mail)m4_dnl | |
167 | mail: | |
168 | ||
fe8f2338 | 169 | ## If we stashed a warning header about HELO from earlier, we should |
2f0841ce MW |
170 | ## add it now. Only don't bother if the client has authenticated |
171 | ## successfully for submission (because we can't expect mobile | |
172 | ## clients to be properly set up knowing their names), or it's one of | |
173 | ## our own satellites (because they're either properly set up anyway, | |
174 | ## or satellites using us as a smarthost). | |
fe8f2338 | 175 | warn condition = $acl_c_helo_warning |
2f0841ce MW |
176 | !condition = ${if eq{$acl_c_mode}{submission}} |
177 | !hosts = +allnets | |
61295d9c MW |
178 | WARNING_HEADER(BADHELO, |
179 | <:Client's HELO doesn't match its IP address.\n\t\ | |
180 | helo-name=$sender_helo_name \ | |
181 | address=$sender_host_address:>) | |
fe8f2338 | 182 | |
185b5456 MW |
183 | ## Always allow the empty sender, so that we can receive bounces. |
184 | accept senders = : | |
185 | ||
5051a30f MW |
186 | ## Ensure that the sender looks valid. |
187 | require acl = mail_check_sender | |
185b5456 MW |
188 | |
189 | ## If this is directly from a client then hack on it for a while. | |
190 | warn condition = ${if eq{$acl_c_mode}{submission}} | |
12d3b444 | 191 | control = submission/sender_retain |
185b5456 | 192 | |
284c9d7e MW |
193 | ## Insist that a local client connect through TLS. |
194 | deny message = Hosts within CONF_master_domain must use TLS | |
195 | !condition = ${if eq{$acl_c_mode}{submission}} | |
196 | hosts = +allnets | |
197 | !encrypted = * | |
198 | ||
199 | ## Check that a submitted message's sender address is allowable. | |
200 | require acl = mail_check_auth | |
201 | ||
185b5456 MW |
202 | SECTION(acl, mail-tail)m4_dnl |
203 | ## And we're done. | |
204 | accept | |
205 | ||
5051a30f MW |
206 | SECTION(acl, misc)m4_dnl |
207 | mail_check_sender: | |
208 | ||
209 | ## See whether there's a special exception for this sender domain. | |
210 | accept senders = ${LOOKUP_DOMAIN($sender_address_domain, | |
211 | {KV(senders, {$value}{})}, | |
212 | {})} | |
213 | ||
214 | ## Ensure that the sender is routable. This is important to prevent | |
215 | ## undeliverable bounces. | |
216 | require message = Invalid sender; \ | |
217 | ($sender_verify_failure; $acl_verify_message) | |
218 | verify = sender | |
219 | ||
220 | ## We're good, then. | |
221 | accept | |
222 | ||
185b5456 MW |
223 | SECTION(global, acl)m4_dnl |
224 | acl_smtp_connect = connect | |
225 | SECTION(acl, connect)m4_dnl | |
226 | connect: | |
227 | SECTION(acl, connect-tail)m4_dnl | |
e12c9586 | 228 | ## Configure variables according to the submission mode. |
185b5456 | 229 | warn acl = check_submission |
e12c9586 MW |
230 | |
231 | ## Done. | |
185b5456 MW |
232 | accept |
233 | ||
234 | check_submission: | |
235 | ## See whether this message needs hacking on. | |
4ff4ad42 | 236 | accept !hosts = +thishost |
185b5456 MW |
237 | !condition = ${if ={$received_port}{CONF_submission_port}} |
238 | set acl_c_mode = relay | |
239 | ||
240 | ## Remember to apply submission controls. | |
241 | warn set acl_c_mode = submission | |
242 | ||
243 | ## Done. | |
244 | accept | |
245 | ||
246 | SECTION(global, acl)m4_dnl | |
247 | acl_smtp_rcpt = rcpt | |
248 | SECTION(acl, rcpt)m4_dnl | |
249 | rcpt: | |
250 | ||
251 | ## Reject if the client isn't allowed to relay and the recipient | |
252 | ## isn't in one of our known domains. | |
e4666f2d MW |
253 | require message = Relaying not permitted |
254 | acl = check_relay | |
185b5456 MW |
255 | |
256 | ## Ensure that the recipient is routable. | |
257 | require message = Invalid recipient \ | |
258 | ($recipient_verify_failure; $acl_verify_message) | |
259 | verify = recipient | |
260 | ||
e4666f2d MW |
261 | SECTION(acl, misc)m4_dnl |
262 | check_relay: | |
263 | ## Accept either if the client is allowed to relay through us, or if | |
264 | ## we're the correct place to send this mail. | |
265 | ||
266 | ## Known clients and authenticated users are OK. | |
267 | accept hosts = CONF_relay_clients | |
268 | accept authenticated = * | |
269 | ||
270 | ## Known domains are OK. | |
271 | accept domains = +public | |
272 | ||
273 | ## Finally, domains in our table are OK, unless they say they aren't. | |
274 | accept domains = \ | |
275 | ${if exists{CONF_sysconf_dir/domains.conf} \ | |
276 | {partial0-lsearch; CONF_sysconf_dir/domains.conf}} | |
277 | condition = DOMKV(service, {$value}{true}) | |
278 | ||
279 | ## Nope, that's not allowed. | |
280 | deny | |
281 | ||
185b5456 MW |
282 | SECTION(acl, rcpt-tail)m4_dnl |
283 | ## Everything checks out OK: let this one go through. | |
284 | accept | |
285 | ||
286 | SECTION(global, acl)m4_dnl | |
287 | acl_smtp_data = data | |
288 | SECTION(acl, data)m4_dnl | |
289 | data: | |
290 | ||
291 | SECTION(acl, data-tail)m4_dnl | |
292 | accept | |
293 | ||
294 | SECTION(global, acl)m4_dnl | |
295 | acl_smtp_expn = expn_vrfy | |
296 | acl_smtp_vrfy = expn_vrfy | |
e4fe8925 | 297 | SECTION(acl, misc)m4_dnl |
185b5456 MW |
298 | expn_vrfy: |
299 | accept hosts = +trusted | |
300 | deny message = Suck it and see | |
301 | ||
302 | DIVERT(null) | |
303 | ###-------------------------------------------------------------------------- | |
284c9d7e MW |
304 | ### Verification of sender address. |
305 | ||
306 | SECTION(acl, misc)m4_dnl | |
307 | mail_check_auth: | |
308 | ||
309 | ## If this isn't a submission then it doesn't need checking. | |
310 | accept condition = ${if !eq{$acl_c_mode}{submission}} | |
311 | ||
312 | ## If the caller hasn't formally authenticated, but this is a | |
313 | ## loopback connection, then we can trust identd to tell us the right | |
314 | ## answer. So we should stash the right name somewhere consistent. | |
315 | warn set acl_c_user = $authenticated_id | |
4ff4ad42 | 316 | hosts = +thishost |
284c9d7e | 317 | !authenticated = * |
ff4c943d | 318 | condition = ${if def:sender_ident} |
284c9d7e MW |
319 | set acl_c_user = $sender_ident |
320 | ||
ff4c943d | 321 | ## User must be authenticated by now. |
284c9d7e | 322 | deny message = Sender not authenticated |
ff4c943d | 323 | condition = ${if !def:acl_c_user} |
284c9d7e | 324 | |
e9015968 MW |
325 | ## Set the per-message authentication flag, since we now know that |
326 | ## there's a sensible value. | |
327 | warn set acl_m_user = $acl_c_user | |
328 | ||
284c9d7e MW |
329 | ## All done. |
330 | accept | |
331 | ||
332 | DIVERT(null) | |
333 | ###-------------------------------------------------------------------------- | |
185b5456 MW |
334 | ### Common options for forwarding routers. |
335 | ||
336 | ## We're pretty permissive here. | |
337 | m4_define(<:FILTER_BASE:>, | |
338 | <:driver = redirect | |
339 | modemask = 002 | |
340 | check_owner = false | |
341 | check_group = false | |
342 | allow_filter = true | |
343 | allow_defer = true | |
344 | allow_fail = true | |
345 | forbid_blackhole = false | |
346 | check_ancestor = true:>) | |
347 | ||
348 | ## Common options for forwarding routers at verification time. | |
349 | m4_define(<:FILTER_VERIFY:>, | |
350 | <:verify_only = true | |
351 | user = CONF_filter_user | |
352 | forbid_filter_dlfunc = true | |
353 | forbid_filter_logwrite = true | |
354 | forbid_filter_perl = true | |
355 | forbid_filter_readsocket = true | |
356 | forbid_filter_run = true | |
357 | file_transport = dummy | |
358 | directory_transport = dummy | |
359 | pipe_transport = dummy | |
360 | reply_transport = dummy:>) | |
361 | ||
362 | ## Transports for redirection filters. | |
363 | m4_define(<:FILTER_TRANSPORTS:>, | |
7ab75d6f | 364 | <:file_transport = mailbox |
185b5456 MW |
365 | directory_transport = maildir |
366 | pipe_transport = pipe | |
367 | reply_transport = reply:>) | |
368 | ||
7ab75d6f MW |
369 | m4_define(<:FILTER_ROUTER:>, |
370 | <:$1_vrf: | |
371 | $2 | |
372 | FILTER_VERIFY<::>$3 | |
373 | $1: | |
374 | $2 | |
375 | verify = no | |
376 | FILTER_TRANSPORTS<::>$4:>) | |
377 | ||
185b5456 MW |
378 | DIVERT(null) |
379 | ###-------------------------------------------------------------------------- | |
3e031e77 MW |
380 | ### Common routers. |
381 | ||
382 | SECTION(routers, alias)m4_dnl | |
383 | ## Look up the local part in the address map. | |
384 | alias: | |
385 | driver = redirect | |
386 | allow_fail = true | |
387 | allow_defer = true | |
388 | user = CONF_filter_user | |
389 | FILTER_TRANSPORTS | |
390 | local_parts = nwildlsearch; CONF_alias_file | |
391 | data = ${expand:$local_part_data} | |
392 | SECTION(routers, alias-opts)m4_dnl | |
393 | ||
394 | DIVERT(null) | |
395 | ###-------------------------------------------------------------------------- | |
185b5456 MW |
396 | ### Some standard transports. |
397 | ||
398 | m4_define(<:USER_DELIVERY:>, | |
399 | <:delivery_date_add = true | |
400 | envelope_to_add = true | |
401 | return_path_add = true:>) | |
402 | ||
1e5ccd7c MW |
403 | m4_define(<:APPLY_HEADER_CHANGES:>, |
404 | <:headers_add = m4_ifelse(<:$1:>, <::>, | |
405 | <:$acl_m_hdradd:>, | |
406 | <:${if def:acl_m_hdradd{$acl_m_hdradd\n}}\ | |
407 | $1:>) | |
408 | headers_remove = m4_ifelse(<:$2:>, <::>, | |
409 | <:$acl_m_hdrrm:>, | |
410 | <:${if def:acl_m_hdrrm{$acl_m_hdrrm:}}\ | |
411 | $2:>):>) | |
412 | ||
185b5456 | 413 | SECTION(transports)m4_dnl |
fa5a92c6 MW |
414 | ## A standard transport for remote delivery. By default, try to do TLS, and |
415 | ## don't worry too much if it's not very secure: the alternative is sending | |
416 | ## in plaintext anyway. But all of this can be overridden from the | |
beb15dae MW |
417 | ## `domains.conf' file. Annoyingly, the `tls_dh_min_bits' setting isn't |
418 | ## expanded before use, so we can't set it the obvious way. Instead, encode | |
419 | ## it into the transport name. This is very unpleasant, of course. | |
534d411b MW |
420 | smtp: |
421 | driver = smtp | |
1e5ccd7c | 422 | APPLY_HEADER_CHANGES |
534d411b | 423 | tls_require_ciphers = CONF_acceptable_ciphers |
7b50997d | 424 | tls_dh_min_bits = 508 |
534d411b MW |
425 | tls_tempfail_tryclear = true |
426 | ||
beb15dae MW |
427 | m4_define(<:SMTP_TRANS_DHBITS:>, |
428 | <:driver = smtp | |
1e5ccd7c | 429 | APPLY_HEADER_CHANGES |
ae9744ce | 430 | hosts_try_auth = * |
fa5a92c6 | 431 | hosts_require_tls = DOMKV(tls-peer-ca, {*}{}) |
ae9744ce MW |
432 | hosts_require_auth = \ |
433 | ${if bool {DOMKV(require-auth, {$value}{false})} {*}{}} | |
fa5a92c6 MW |
434 | tls_certificate = DOMKV(tls-certificate, {${expand:$value}}fail) |
435 | tls_privatekey = DOMKV(tls-private-key, {${expand:$value}}fail) | |
436 | tls_verify_certificates = DOMKV(tls-peer-ca, {${expand:$value}}fail) | |
437 | tls_require_ciphers = \ | |
438 | DOMKV(tls-ciphers, | |
439 | {${extract {${expand:$value}} \ | |
440 | { good = CONF_good_ciphers \ | |
441 | any = CONF_acceptable_ciphers } \ | |
442 | {$value} \ | |
443 | {${expand:$value}}}} \ | |
444 | {CONF_acceptable_ciphers}) | |
beb15dae MW |
445 | tls_dh_min_bits = $1 |
446 | tls_tempfail_tryclear = true:>)m4_dnl | |
7b50997d MW |
447 | smtp_dhbits_512: |
448 | SMTP_TRANS_DHBITS(508) | |
449 | smtp_dhbits_768: | |
450 | SMTP_TRANS_DHBITS(764) | |
beb15dae MW |
451 | smtp_dhbits_1024: |
452 | SMTP_TRANS_DHBITS(1020) | |
453 | smtp_dhbits_2048: | |
7b50997d | 454 | SMTP_TRANS_DHBITS(2044) |
185b5456 MW |
455 | |
456 | ## Transport to a local SMTP server; use TLS and perform client | |
457 | ## authentication. | |
458 | smtp_local: | |
459 | driver = smtp | |
1e5ccd7c | 460 | APPLY_HEADER_CHANGES |
185b5456 | 461 | hosts_require_tls = * |
163774f0 | 462 | tls_certificate = CONF_sysconf_dir/client.certlist |
185b5456 MW |
463 | tls_privatekey = CONF_sysconf_dir/client.key |
464 | tls_verify_certificates = CONF_ca_dir/ca.cert | |
465 | tls_require_ciphers = CONF_good_ciphers | |
b6d74252 | 466 | tls_dh_min_bits = 2046 |
185b5456 | 467 | tls_tempfail_tryclear = false |
10c331d7 MW |
468 | authenticated_sender_force = true |
469 | authenticated_sender = \ | |
470 | ${if def:acl_m_user {$acl_m_user@CONF_master_domain} \ | |
471 | {${if def:authenticated_sender {$authenticated_sender} \ | |
472 | fail}}} | |
185b5456 MW |
473 | |
474 | ## A standard transport for local delivery. | |
475 | deliver: | |
476 | driver = appendfile | |
1e5ccd7c | 477 | APPLY_HEADER_CHANGES |
185b5456 | 478 | file = /var/mail/$local_part |
8f6af4ae MW |
479 | group = mail |
480 | mode = 0600 | |
481 | mode_fail_narrower = false | |
185b5456 MW |
482 | USER_DELIVERY |
483 | ||
484 | ## Transports for user filters. | |
485 | mailbox: | |
486 | driver = appendfile | |
1e5ccd7c | 487 | APPLY_HEADER_CHANGES |
8f6af4ae | 488 | initgroups = true |
185b5456 MW |
489 | USER_DELIVERY |
490 | ||
491 | maildir: | |
492 | driver = appendfile | |
1e5ccd7c | 493 | APPLY_HEADER_CHANGES |
185b5456 | 494 | maildir_format = true |
8f6af4ae | 495 | initgroups = true |
185b5456 MW |
496 | USER_DELIVERY |
497 | ||
498 | pipe: | |
499 | driver = pipe | |
1e5ccd7c | 500 | APPLY_HEADER_CHANGES |
8f6af4ae MW |
501 | path = ${if and {{def:home} {exists{$home/bin}}} {$home/bin:} {}}\ |
502 | /usr/local/bin:/usr/local/sbin:\ | |
503 | /usr/bin:/usr/sbin:/bin:/sbin | |
504 | initgroups = true | |
505 | umask = 002 | |
506 | return_fail_output = true | |
507 | log_output = true | |
185b5456 MW |
508 | |
509 | ## A special dummy transport for use during address verification. | |
510 | dummy: | |
511 | driver = appendfile | |
512 | file = /dev/null | |
513 | ||
514 | DIVERT(null) | |
515 | ###-------------------------------------------------------------------------- | |
516 | ### Retry configuration. | |
517 | ||
518 | SECTION(retry, default)m4_dnl | |
519 | ## Default. | |
520 | * * \ | |
521 | F,2h,15m; G,16h,2h,1.5; F,4d,6h | |
522 | ||
523 | DIVERT(null) | |
524 | ###----- That's all, folks -------------------------------------------------- |