GNU Anubis 4.1.1

GNU Anubis - An outgoing mail processor and the SMTP tunnel.

GNU Anubis is an outgoing mail processor. It goes between the MUA and the MTA, and can perform on the fly various sorts of processing and conversion on the outgoing mail in accord with the sender's specified rules, based on a highly configurable regular expressions system. It operates as a proxy server, independently from mail user agents.