Spamassassin ‘e spam mailleri öğretmek zor geliyorsa main.cf dosyasına ekleyeceğiniz rbl listeleri ile bu işi otomatiğe bağlayabilirsiniz.

reject_rbl_client bl.spamcop.net,
reject_rbl_client cn-kr.blackholes.us,
reject_rbl_client singapore.blackholes.us,
reject_rbl_client malaysia.blackholes.us,
reject_rbl_client nigeria.blackholes.us,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client opm.blitzed.org,
reject_rbl_client relays.ordb.org,
reject_rbl_client combined.njabl.org,
reject_rbl_client sbl.spamhaus.org,
reject_rbl_client list.dsbl.org,
reject_rbl_client dnsbl.ahbl.org,
reject_rbl_client dnsbl.njabl.org,
reject_rbl_client dynablock.njabl.org,
reject_rbl_client l1.spews.dnsbl.sorbs.net,
reject_rhsbl_sender dsn.rfc-ignorant.org,
reject_rhsbl_client dnsbl.sorbs.net,
reject_rhsbl_client blackhole.securitysage.com,
reject_rhsbl_sender blackhole.securitysage.com

(kendi kullandığım rbl listeleri)