The Perfect Setup - Ubuntu 6.06 LTS Server (32bit)

This is a detailed description about how to set up a Ubuntu 6.06 LTS server that offers all services needed by ISPs and hosters (Apache web server, Postfix mail server (with SMTP-AUTH and TLS!), DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc.). This guide comes with lots of screenshots and is therefore easy to follow even for Linux newbies.

http://www.howtoforge.com/perfect_setup_ubuntu_6.06