Homepage: http://p3scan.sourceforge.net/
Supports: clamscan
This is a fully transparent proxy server for POP3-clients. It runs on
a Linux box with iptables (for port redirection). It can be used to
provide POP3 email scanning from the Internet, to any internal network
and is ideal for helping to protect your Other OS LAN from harm,
especially when used in conjunction with a firewall and other Internet
Proxy servers.