+ 'spamhaus.org', // www zen rbl...
+ 'detected as Spam',
+ 'poor reputation',
+ 'AntiSpam',
+ 'ip address in rbl',
+ 'IP address blacklisted',
+ 'spamauditor.org',
+ 'detect spam',
+ 'message as spam',
+ 'DNSBL:RBL',
+ 'SpamHaus SBL-XBL',
+ 'blocked by sbl-xbl.spam',
+ 'Sophos Anti Spam Engine',
+ 'spam filters',
+