


Mail::SpamAssassUisne:r:PCloungtirniM:ba:uiUtlRe:Id:DSNPpSeaBrmLlA(s3Dspoa)csusmienn:t:aPtliuognin::URIDNSBL(3p)


NNAAMMEE
       URIDNSBL - look up URLs against DNS blocklists

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

DDEESSCCRRIIPPTTIIOONN
       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.

UUSSEERR SSEETTTTIINNGGSS
       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.

RRUULLEE DDEEFFIINNIITTIIOONNSS AANNDD PPRRIIVVIILLEEGGEEDD SSEETTTTIINNGGSS
       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 (TTXXTT or AA).   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
           (TTXXTT or AA).

           "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'



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Mail::SpamAssassUisne:r:PCloungtirniM:ba:uiUtlRe:Id:DSNPpSeaBrmLlA(s3Dspoa)csusmienn:t:aPtliuognin::URIDNSBL(3p)


           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 (TTXXTT or AA).   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 (TTXXTT or AA).

           "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



perl v5.12.2                2010-03-16                          2





Mail::SpamAssassUisne:r:PCloungtirniM:ba:uiUtlRe:Id:DSNPpSeaBrmLlA(s3Dspoa)csusmienn:t:aPtliuognin::URIDNSBL(3p)


           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 (TTXXTT or AA).

           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 (TTXXTT or AA).  "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 (TTXXTT or AA).



perl v5.12.2                2010-03-16                          3





Mail::SpamAssassUisne:r:PCloungtirniM:ba:uiUtlRe:Id:DSNPpSeaBrmLlA(s3Dspoa)csusmienn:t:aPtliuognin::URIDNSBL(3p)


           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 (TTXXTT or AA).  "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.

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

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




























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