policyd: policyd (Policy Daemon for Postfix) policyd: policyd: Policyd is an anti-spam plugin for Postfix (written in C) that policyd: does Greylisting, Sender-throttling, Spamtrap monitoring and policyd: blacklisting, helo auto blacklisting and helo randomization policyd: prevention (HRP). policyd: policyd: Homepage: http://policyd.org/ policyd: policyd: policyd: