All of the following are dead RBL's and can be set to a custom score of 0 in your SpamAssassin configs if they still have action scoring in the rules :
- dnsbl.karmasphere.com
- rbl.cluecentral.net
- blackholes.us
- vox.schpider.com
- bl.open-whois.org
- dnsbl.net.au
- list.dsbl.org
- www.spews.org
- rbl.spamhaus.org
- blackhole.securitysage.com
- completewhois.com
- dnsbl.tqmcube.com
- blacklist.spambag.org
- rbl.maps.vix.com
- lbl.lagengymnastik.dk
- dynablock.njabl.org
- relays.radparker.com
- relays.visi.com
- opm.blitzed.org
- relays.ordb.org
- block.blars.org
- relays.orbs.org
