Mail Server
These packages allow you to configure an IMAP or SMTP mail server.
- SpamAssassin - a spam filter for email which can be invoked from mail delivery agents
 - clamav - Clam Antivirus
 - cyrus-sasl - The Cyrus SASL library
 - dovecot - Dovecot Secure imap server
 - esmtp - User configurable relay-only Mail Transfer Agent (MTA)
 - mailman - Mailing list manager with built in Web access.
 - postfix - Postfix Mail Transport Agent
 - roundcubemail - browser-based IMAP client using Aajx
 - sendmail - A widely used Mail Transport Agent (MTA)
 - sendmail-cf - The files needed to reconfigure Sendmail
 - spambayes - Bayesian anti-spam filter
 - squirrelmail - SquirrelMail webmail client