gremlin

As that's DRBL, messages destined to the contact address bypass any and all DNSBL checks. However, that applies only to DNSBL, so the requirement of strict RFC-821 compliance is still enforced. Of course, there are false positives - but most people perceive them as a good reason to properly configure their servers.

OMFG... `dig vote.drbl.gremlin.ru soa` will answer your question. The same applies to all other DRBL voting zones I know of - we strictly conform to RFCs.