Presenting using the following blacklists... dul.dnsbl.sorbs.net psbl.surriel.com zen.spamhaus.org
These do a good job for me, but I wanted to look for opinions on a couple additional ones. Specifically look for false-positive opinions, adding additional DNS lookups isn't much concern to me. The two I am looking at are ... hostkarma.junkemailfilter.com combined.rbl.msrbl.net
