dnsbl.m4 revision 261363 
1divert(-1)
2#
3# Copyright (c) 1998-2002, 2005-2007 Proofpoint, 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#
11
12ifdef(`DNSBL_MAP', `', `define(`DNSBL_MAP', `dns -R A')')
13divert(0)
14ifdef(`_DNSBL_R_',`dnl',`dnl
15VERSIONID(`$Id: dnsbl.m4,v 8.34 2013/11/22 20:51:11 ca Exp $')
16define(`_DNSBL_R_',`')
17ifelse(defn(`_ARG_'), `', 
18	`errprint(`*** ERROR: missing argument for FEATURE(`dnsbl')')')
19LOCAL_CONFIG
20# map for DNS based blacklist lookups
21Kdnsbl DNSBL_MAP -T<TMP>ifdef(`DNSBL_MAP_OPT',` DNSBL_MAP_OPT')')
22divert(-1)
23define(`_DNSBL_SRV_', `_ARG_')dnl
24define(`_DNSBL_MSG_', `ifelse(len(X`'_ARG2_),`1',`"550 Rejected: " $`'&{client_addr} " listed at '_DNSBL_SRV_`"',`_ARG2_')')dnl
25define(`_DNSBL_MSG_TMP_', `ifelse(_ARG3_,`t',`"451 Temporary lookup failure of " $`'&{client_addr} " at '_DNSBL_SRV_`"',`_ARG3_')')dnl
26divert(8)
27# DNS based IP address spam list _DNSBL_SRV_
28R$*			$: $&{client_addr}
29R$-.$-.$-.$-		$: <?> $(dnsbl $4.$3.$2.$1._DNSBL_SRV_. $: OK $)
30R<?>OK			$: OKSOFAR
31ifelse(len(X`'_ARG3_),`1',
32`R<?>$+<TMP>		$: TMPOK',
33`R<?>$+<TMP>		$#error $@ 4.4.3 $: _DNSBL_MSG_TMP_')
34ifelse(`X'_ARG2_,`Xquarantine',
35`R<?>$+		$#error $@ quarantine $: _DNSBL_SRV_',
36`X'_ARG2_,`Xdiscard',
37`R<?>$+		$#discard $: _DNSBL_SRV_',
38`R<?>$+		$#error $@ 5.7.1 $: _DNSBL_MSG_')
39divert(-1)
40