[ Thanks to Falko
Timme for this link. ]
“The resulting Postfix server is capable of SMTP-AUTH and TLS
and quota (quota is not built into Postfix by default, I’ll show
how to patch your Postfix appropriately). Passwords are stored in
encrypted form in the database (most documents I found were dealing
with plain text passwords which is a security risk). In addition to
that, this tutorial covers the installation of Amavisd,
SpamAssassin and ClamAV so that emails will be scanned for spam and
viruses. I will also show how to install SquirrelMail as a webmail
interface so that users can read and send emails and change their
passwords.”