MailMonitor - MailMonitor is a program enabling you to monitor incoming and outgoing mail traffic to and from your mail server and clients. It tracks, displays and logs incoming and outgoing SMTP sessions, POP sessions and sent and received e-mails. It can store incoming and outgoing e-mail in a separate directory independent of mail clients. Finally, it keeps a trace of all e-mail related session traffic (at packet level). This enables you to explore in depth what is going on in your e-mail environment. Features: view SMTP and POP3 sessions with complete session trace, track all e-mails passing your server, monitor SMTP authentication with IP, username, and password, monitor POP authentication, scan for mail errors and abnormalities, store every e-mail passing your server, see a complete packet level trace of e-mail traffic only, and supports VPN tunnels.