Mail::SpamAssassin::Plugin::URIDNSBL man page on SuSE

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Mail::SpamAssassin::PlUser:Contributed)Mail::SpamAssassin::Plugin::URIDNSBL(3)

NAME
       URIDNSBL - look up URLs against DNS blocklists

SYNOPSIS
	 loadplugin    Mail::SpamAssassin::Plugin::URIDNSBL
	 uridnsbl      URIBL_SBLXBL    sbl-xbl.spamhaus.org.   TXT

DESCRIPTION
       This works by analysing message text and HTML for URLs, extracting the
       domain names from those, querying their NS records in DNS, resolving
       the hostnames used therein, and querying various DNS blocklists for
       those IP addresses.  This is quite effective.

USER SETTINGS
       skip_uribl_checks ( 0 | 1 )   (default: 0)
	   Turning on the skip_uribl_checks setting will disable the URIDNSBL
	   plugin.

	   By default, SpamAssassin will run URI DNSBL checks. Individual URI
	   blocklists may be disabled selectively by setting a score of a
	   corresponding rule to 0 or through the uridnsbl_skip_domain
	   parameter.

	   See also a related configuration parameter skip_rbl_checks, which
	   controls the DNSEval plugin (documented in the Conf man page).

       uridnsbl_skip_domain domain1 domain2 ...
	   Specify a domain, or a number of domains, which should be skipped
	   for the URIBL checks.  This is very useful to specify very common
	   domains which are not going to be listed in URIBLs.

RULE DEFINITIONS AND PRIVILEGED SETTINGS
       uridnsbl NAME_OF_RULE dnsbl_zone lookuptype
	   Specify a lookup.  "NAME_OF_RULE" is the name of the rule to be
	   used, "dnsbl_zone" is the zone to look up IPs in, and "lookuptype"
	   is the type of lookup (TXT or A).   Note that you must also define
	   a body-eval rule calling "check_uridnsbl()" to use this.

	   Example:

	    uridnsbl	    URIBL_SBLXBL    sbl-xbl.spamhaus.org.   TXT
	    body	    URIBL_SBLXBL    eval:check_uridnsbl('URIBL_SBLXBL')
	    describe	    URIBL_SBLXBL    Contains a URL listed in the SBL/XBL blocklist

       uridnssub NAME_OF_RULE dnsbl_zone lookuptype subtest
	   Specify a DNSBL-style domain lookup with a sub-test.
	   "NAME_OF_RULE" is the name of the rule to be used, "dnsbl_zone" is
	   the zone to look up IPs in, and "lookuptype" is the type of lookup
	   (TXT or A).

	   "subtest" is a sub-test to run against the returned data.  The sub-
	   test may be in one of the following forms: m, n1-n2, or n/m, where
	   n,n1,n2,m can be any of: decimal digits, 0x followed by up to 8
	   hexadecimal digits, or an IPv4 address in quad-dot form. The 'A'
	   records (IPv4 dotted address) as returned by DNSBLs lookups are
	   converted into a numerical form (r) and checked against the
	   specified sub-test as follows: for a range n1-n2 the following must
	   be true: (r >= n1 && r <= n2); for a n/m form the following must be
	   true: (r & m) == (n & m); for a single value in quad-dot form the
	   following must be true: r == n; for a single decimal or hex form
	   the following must be true: (r & n) != 0.

	   Some typical examples of a sub-test are: 127.0.1.2,
	   127.0.1.20-127.0.1.39, 127.0.1.0/255.255.255.0, 0.0.0.16/0.0.0.16,
	   0x10/0x10, 16, 0x10 .

	   Note that, as with "uridnsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

	   Example:

	     uridnssub	 URIBL_DNSBL_4	  dnsbl.example.org.   A    127.0.0.4
	     uridnssub	 URIBL_DNSBL_8	  dnsbl.example.org.   A    8

       urirhsbl NAME_OF_RULE rhsbl_zone lookuptype
	   Specify a RHSBL-style domain lookup.	 "NAME_OF_RULE" is the name of
	   the rule to be used, "rhsbl_zone" is the zone to look up domain
	   names in, and "lookuptype" is the type of lookup (TXT or A).	  Note
	   that you must also define a body-eval rule calling
	   "check_uridnsbl()" to use this.

	   An RHSBL zone is one where the domain name is looked up, as a
	   string; e.g. a URI using the domain "foo.com" will cause a lookup
	   of "foo.com.uriblzone.net".	Note that hostnames are stripped from
	   the domain used in the URIBL lookup, so the domain "foo.bar.com"
	   will look up "bar.com.uriblzone.net", and "foo.bar.co.uk" will look
	   up "bar.co.uk.uriblzone.net".

	   If an URI consists of an IP address instead of a hostname, the IP
	   address is looked up (using the standard reversed quads method) in
	   each "rhsbl_zone".

	   Example:

	     urirhsbl	     URIBL_RHSBL    rhsbl.example.org.	 TXT

       urirhssub NAME_OF_RULE rhsbl_zone lookuptype subtest
	   Specify a RHSBL-style domain lookup with a sub-test.
	   "NAME_OF_RULE" is the name of the rule to be used, "rhsbl_zone" is
	   the zone to look up domain names in, and "lookuptype" is the type
	   of lookup (TXT or A).

	   "subtest" is a sub-test to run against the returned data.  The sub-
	   test may be in one of the following forms: m, n1-n2, or n/m, where
	   n,n1,n2,m can be any of: decimal digits, 0x followed by up to 8
	   hexadecimal digits, or an IPv4 address in quad-dot form. The 'A'
	   records (IPv4 dotted address) as returned by DNSBLs lookups are
	   converted into a numerical form (r) and checked against the
	   specified sub-test as follows: for a range n1-n2 the following must
	   be true: (r >= n1 && r <= n2); for a n/m form the following must be
	   true: (r & m) == (n & m); for a single value in quad-dot form the
	   following must be true: r == n; for a single decimal or hex form
	   the following must be true: (r & n) != 0.

	   Some typical examples of a sub-test are: 127.0.1.2,
	   127.0.1.20-127.0.1.39, 127.2.3.0/255.255.255.0, 0.0.0.16/0.0.0.16,
	   0x10/0x10, 16, 0x10 .

	   Note that, as with "urirhsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

	   Example:

	     urirhssub	 URIBL_RHSBL_4	  rhsbl.example.org.   A    127.0.0.4
	     urirhssub	 URIBL_RHSBL_8	  rhsbl.example.org.   A    8

       urinsrhsbl NAME_OF_RULE rhsbl_zone lookuptype
	   Perform a RHSBL-style domain lookup against the contents of the NS
	   records for each URI.  In other words, a URI using the domain
	   "foo.com" will cause an NS lookup to take place; assuming that
	   domain has an NS of "ns0.bar.com", that will cause a lookup of
	   "bar.com.uriblzone.net".  Note that hostnames are stripped from
	   both the domain used in the URI, and the domain in the lookup.

	   "NAME_OF_RULE" is the name of the rule to be used, "rhsbl_zone" is
	   the zone to look up domain names in, and "lookuptype" is the type
	   of lookup (TXT or A).

	   Note that, as with "urirhsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

       urinsrhssub NAME_OF_RULE rhsbl_zone lookuptype subtest
	   Specify a RHSBL-style domain-NS lookup, as above, with a sub-test.
	   "NAME_OF_RULE" is the name of the rule to be used, "rhsbl_zone" is
	   the zone to look up domain names in, and "lookuptype" is the type
	   of lookup (TXT or A).  "subtest" is the sub-test to run against the
	   returned data; see <urirhssub>.

	   Note that, as with "urirhsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

       urifullnsrhsbl NAME_OF_RULE rhsbl_zone lookuptype
	   Perform a RHSBL-style domain lookup against the contents of the NS
	   records for each URI.  In other words, a URI using the domain
	   "foo.com" will cause an NS lookup to take place; assuming that
	   domain has an NS of "ns0.bar.com", that will cause a lookup of
	   "ns0.bar.com.uriblzone.net".	 Note that hostnames are stripped from
	   the domain used in the URI.

	   "NAME_OF_RULE" is the name of the rule to be used, "rhsbl_zone" is
	   the zone to look up domain names in, and "lookuptype" is the type
	   of lookup (TXT or A).

	   Note that, as with "urirhsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

       urifullnsrhssub NAME_OF_RULE rhsbl_zone lookuptype subtest
	   Specify a RHSBL-style domain-NS lookup, as above, with a sub-test.
	   "NAME_OF_RULE" is the name of the rule to be used, "rhsbl_zone" is
	   the zone to look up domain names in, and "lookuptype" is the type
	   of lookup (TXT or A).  "subtest" is the sub-test to run against the
	   returned data; see <urirhssub>.

	   Note that, as with "urirhsbl", you must also define a body-eval
	   rule calling "check_uridnsbl()" to use this.

       tflags NAME_OF_RULE ips_only
	   Only URIs containing IP addresses as the "host" component will be
	   matched against the named "urirhsbl"/"urirhssub" rule.

       tflags NAME_OF_RULE domains_only
	   Only URIs containing a non-IP-address "host" component will be
	   matched against the named "urirhsbl"/"urirhssub" rule.

ADMINISTRATOR SETTINGS
       uridnsbl_max_domains N	     (default: 20)
	   The maximum number of domains to look up.

NOTES
       The "uridnsbl_timeout" option has been obsoleted by the "rbl_timeout"
       option.	See the "Mail::SpamAssassin::Conf" POD for details on
       "rbl_timeout".

perl v5.10.0			  2012-Mail::SpamAssassin::Plugin::URIDNSBL(3)
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