divert(-1)
#
# Copyright (c) 1998-2002, 2005-2007 Proofpoint, Inc. and its suppliers.
#	All rights reserved.
#
# By using this file, you agree to the terms and conditions set
# forth in the LICENSE file which can be found at the top level of
# the sendmail distribution.
#
#

ifdef(`DNSBL_MAP', `', `define(`DNSBL_MAP', `dns -R A')')
divert(0)
ifdef(`_DNSBL_R_',`dnl',`dnl
VERSIONID(`$Id: dnsbl.m4,v 8.34 2013-11-22 20:51:11 ca Exp $')
define(`_DNSBL_R_',`')
ifelse(defn(`_ARG_'), `', 
	`errprint(`*** ERROR: missing argument for FEATURE(`dnsbl')')')
LOCAL_CONFIG
# map for DNS based blocklist lookups
Kdnsbl DNSBL_MAP -T<TMP>ifdef(`DNSBL_MAP_OPT',` DNSBL_MAP_OPT')')
divert(-1)
define(`_DNSBL_SRV_', `_ARG_')dnl
define(`_DNSBL_MSG_', `ifelse(len(X`'_ARG2_),`1',`"550 Rejected: " $`'&{client_addr} " listed at '_DNSBL_SRV_`"',`_ARG2_')')dnl
define(`_DNSBL_MSG_TMP_', `ifelse(_ARG3_,`t',`"451 Temporary lookup failure of " $`'&{client_addr} " at '_DNSBL_SRV_`"',`_ARG3_')')dnl
divert(8)
# DNS based IP address spam list _DNSBL_SRV_
R$*			$: $&{client_addr}
R$-.$-.$-.$-		$: <?> $(dnsbl $4.$3.$2.$1._DNSBL_SRV_. $: OK $)
R<?>OK			$: OKSOFAR
ifelse(len(X`'_ARG3_),`1',
`R<?>$+<TMP>		$: TMPOK',
`R<?>$+<TMP>		$#error $@ 4.4.3 $: _DNSBL_MSG_TMP_')
ifelse(`X'_ARG2_,`Xquarantine',
`R<?>$+		$#error $@ quarantine $: _DNSBL_SRV_',
`X'_ARG2_,`Xdiscard',
`R<?>$+		$#discard $: _DNSBL_SRV_',
`R<?>$+		$#error $@ 5.7.1 $: _DNSBL_MSG_')
divert(-1)