"This tutorial shows how to set up a Debian Etch (Debian 4.0)
based server that offers all services needed by ISPs and hosters:
Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH
and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Courier
POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the
32-bit version of Debian Etch, but should apply to the 64-bit
version with very little modifications as well..."