[ Thanks to Falko
Timme for this link. ]
“This tutorial shows how to set up a CentOS 5.6 server (x86_64)
that offers all services needed by ISPs and web hosters: Apache web
server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS,
BIND DNS server, Proftpd FTP server, MySQL server, Dovecot
POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the
64-bit version of CentOS 5.6, but should apply to the 32-bit
version with very little modifications as well. In the end you
should have a system that works reliably, and if you like you can
install the free webhosting control panel ISPConfig 2 (i.e.,
ISPConfig runs on it out of the box).”