http://bugzilla.spamassassin.org/show_bug.cgi?id=4242





------- Additional Comments From [EMAIL PROTECTED]  2005-04-03 23:31 -------
The patch directly tests the numeric NS entries against the URIBL.  Without the
patch the numeric NS entries are first attempted to be resolved into A records
and these then looked up in URIBL, but as this A lookup fails, there is no A to
lookup in URIBL. The patch tests if NS record is numeric and if so bypasses the
further lookup of A record for the NS entry and tests the NS record directly
against URIBL (after removing trailing dot)

The NS lookup has to occur first as this is the way the URIBL_SBL rule works. It
 checks against the URIBL the IPs of the NS records for URIs in the email, so a
lookup of NS records for a domain must occur first. 

This is different to the SURBL rules: URIBL_SC_SURBL etc , where the domains in
URIS in email are looked up directly against the URIBLs.



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