"This is a detailed description about the steps to be taken to
setup a Ubuntu based server (Ubuntu 5.0.4 - The Hoary Hedgehog)
that offers all services needed by ISPs and hosters (web server
(SSL-capable), mail server (with SMTP-AUTH and TLS!), DNS server,
FTP server, MySQL server, POP3/POP3s/IMAP/IMAPs, Quota, Firewall,
"In the end you should have a system that works reliably and is
ready for the free webhosting control panel ISPConfig (i.e.,
ISPConfig runs on it out of the box)..."