Package rbldnsd

Small, fast daemon to serve DNSBLs

http://www.corpit.ru/mjt/rbldnsd.html

Rbldnsd is a small, authoritative-only DNS nameserver designed to serve
DNS-based blocklists (DNSBLs). It may handle IP-based and name-based
blocklists.

System Administration
Command Description
rbldnsd DNS daemon suitable for running DNS-based blocklists