Commercial <li>Anti-Spam features <li>Virus Scanning support <li>Corporate Policy Rules for incoming and outgoing messages <li>Multiple Kick Options <li>Mailing list options <li>Denial of Service attack prevention <li>Relay Mailboxes <li>ETRN / ATRN SMTP store and forward support <li>Multi-IP SMTP / POP3 service support <li>Support for multiple Homed domains
freeware STMP/POP3/Finger server