Howtoforge posted a tutorial about setting up Debian Squeeze (Debian 6.0) with BIND, Dovecot, Nginx, and ISPConfig 3

This tutorial shows how to prepare a Debian Squeeze (Debian 6.0) server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: nginx or Apache web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, and many more. The idea is to use the fast and memory efficient nginx web server and Dovecot which is also said to be more memory efficient. You will need to use the Dotdeb repository for nginx.

  The Perfect Server - Debian Squeeze (Debian 6.0) With BIND, Dovecot Nginx [ISPConfig 3]