I would just use webmin to admin users add/remove/reset passwords check their mailbox etc
If you like to install and update Webmin via APT, edit the /etc/apt/sources.list file on your system and add the line : deb
http://download.webmin.com/download/repository sarge contrib You will now be able to install with the commands : apt-get update
apt-get install webmin All dependencies should be resolved automatically.
