Thanks for your quick responses. So I think that Postfix is the best thing to use. I want to use IMAP Access, Spam Checking, possibly Virus checking and webmail. I have seen this Webmail which includes groupware facilites called PHPGroupware (www.phpgroupware.org). So for a email server, I would need the following: 1. Postfix MTA - To receive the mail 2. Courier IMAP - To allow the clients to access the email 3. PHP Groupware - Groupware and Webmail 4. Spam Assassin - Spam Filtering Is this correct or do I need more than this? Thanks Seb Payne Senior Services Consultant ------------------------------------------ Sebastian Payne Computer Consultancy Professional solutions to suit your personal needs www.sebpayne.com