1divert(-1)
2#
3# Copyright (c) 1998-2002, 2005-2007 Sendmail, Inc. and its suppliers.
4#	All rights reserved.
5#
6# By using this file, you agree to the terms and conditions set
7# forth in the LICENSE file which can be found at the top level of
8# the sendmail distribution.
9#
10# ident	"%Z%%M%	%I%	%E% SMI"
11#
12
13ifdef(`DNSBL_MAP', `', `define(`DNSBL_MAP', `dns -R A')')
14divert(0)
15ifdef(`_DNSBL_R_',`dnl',`dnl
16VERSIONID(`$Id: dnsbl.m4,v 8.33 2007/01/05 18:49:29 ca Exp $')
17define(`_DNSBL_R_',`')
18ifelse(defn(`_ARG_'), `',
19	`errprint(`*** ERROR: missing argument for FEATURE(`dnsbl')')')
20LOCAL_CONFIG
21# map for DNS based blacklist lookups
22Kdnsbl DNSBL_MAP -T<TMP>ifdef(`DNSBL_MAP_OPT',` DNSBL_MAP_OPT')')
23divert(-1)
24define(`_DNSBL_SRV_', `_ARG_')dnl
25define(`_DNSBL_MSG_', `ifelse(len(X`'_ARG2_),`1',`"550 Rejected: " $`'&{client_addr} " listed at '_DNSBL_SRV_`"',`_ARG2_')')dnl
26define(`_DNSBL_MSG_TMP_', `ifelse(_ARG3_,`t',`"451 Temporary lookup failure of " $`'&{client_addr} " at '_DNSBL_SRV_`"',`_ARG3_')')dnl
27divert(8)
28# DNS based IP address spam list _DNSBL_SRV_
29R$*			$: $&{client_addr}
30R$-.$-.$-.$-		$: <?> $(dnsbl $4.$3.$2.$1._DNSBL_SRV_. $: OK $)
31R<?>OK			$: OKSOFAR
32ifelse(len(X`'_ARG3_),`1',
33`R<?>$+<TMP>		$: TMPOK',
34`R<?>$+<TMP>		$#error $@ 4.4.3 $: _DNSBL_MSG_TMP_')
35ifelse(`X'_ARG2_,`Xquarantine',
36`R<?>$+		$#error $@ quarantine $: _DNSBL_SRV_',
37`X'_ARG2_,`Xdiscard',
38`R<?>$+		$#discard $: _DNSBL_SRV_',
39`R<?>$+		$#error $@ 5.7.1 $: _DNSBL_MSG_')
40divert(-1)
41