[DNSfirewalls] Offlabel use: suppressing backscatter and leakage, tracking misbehaving devices

[Paul Vixie]

fred, this is brilliant. i've long wished that postfix (the smtp server) 
would call res_query rather than res_search, but this is a "wontfix" due 
to portability concerns. solving this with RPZ is a brilliant idea and i 
hope you will blog it somewhere so that dnsrpz.info can link to it. --paul