SpamAssassin Rule: URIBL_SBL
Standard description: Contains an URL listed in the SBL blocklist
Explanation
The mail body contains a URI containing a domain that has matched an entry on the Spamhaus Block List (DNSBL).
The Spamhaus Block List (SBL) is a realtime database of IP addresses of spam-sources, including known spammers, spam gangs, spam operations and spam support services. SBL listings are made according to policies outlined in SBL Policy & Listing Criteria.
Further Info
The default scores for this rule can be found in the online list of tests.
For the Received header check see RCVD_IN_SBL, and for other Spamhaus.org RBL listings see RCVD_IN_XBL RCVD_IN_PBL.