System setups

Guides to setting up Linux (Ubuntu's my personal choice) with:
* LDAP (openLDAP)
* MailServer (PostFix) & SpamAssassin; IMAP, POP3 & SMTP
* AntiVirus (ClamAV)
* MySQL
* Apache, PHP
* Web-based Administration; ISPMan/WebMin

ISP-Server Setup - Ubuntu 5.10 "Breezy Badger"
Turn your world LDAP-tastic
How to set up a mail server on a GNU / Linux system
Using OpenLDAP
Running ISPMan on Debian 3.0 Full Install Guide