[RPZ] other uses for RPZ

[Paul Vixie]

"In Taking Back The DNS I described new technology in ISC BIND as of
Version 9.8.0 that allows a recursive server operator to import DNS
filtering rules in what ISC hopes will become the standard interchange
format for DNS policy information. Later I had to decry the possible use
of this technology for mandated content blocking such as might soon be
the law of the land in my country. I'm a guest at MAAWG this week in San
Francisco and one of the most useful hallway discussions I've been in so
far was about the Spamhaus DROP list.

..."

http://www.circleid.com/posts/using_domain_filtering_to_effect_ip_address_filtering/