Craig Chambers wrote:

Open Exchange Server is very easy to set up and provides same functionality as Exchange. All administration is done through a web browser and not the usual components. It uses OpenLDAP and SAMBA along with Postfix for mail. Everthing is already configured to work out the box. There is also a special schools version which includes some extra functionality: Samba shares as well as a PDC and the ability to install SuSE linux remotely.

Thanks Craig, I'd seen the school's version - it looked more like a "learning environment" type package - not really what we're after at this point in time. Still, the rest of it sounds promising :) Thanks for the advice. Tony