[ Thanks to Falko
Timme for this link. ]
I’ll also demonstrate the installation and configuration of
Courier (Courier-POP3, Courier-IMAP), so that Courier can
authenticate against the same MySQL database Postfix uses.“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…”