I currently use :-
sbl-xbl.spamhaus.org relays.ordb.org bl.spamcop.net opm.blitzed.org cbl.abuseat.org dnsbl.njabl.org dnsbl.sorbs.net query.bondedsender.org
sbl-xbl.spamhaus.org contains cbl.abuseat.org so no need to do that extra lookup
Niek --
I currently use :-
sbl-xbl.spamhaus.org relays.ordb.org bl.spamcop.net opm.blitzed.org cbl.abuseat.org dnsbl.njabl.org dnsbl.sorbs.net query.bondedsender.org
sbl-xbl.spamhaus.org contains cbl.abuseat.org so no need to do that extra lookup
Niek --