Server Requirements
(for On Premise version)Windows
1 Ghz 512 MB RAM Windows 2000/XP/2003/Vista/2008
Linux
1 GHz 512 MB RAM Red Hat Enterprise Linux 4/5 CentOS 5.2 SUSE/openSUSE 10/10.1/10.2 Debian 4.0 Ubuntu 8.04 LTS
Mac OS X
PowerPC G4 or G5, Intel Core 512 MB RAM Mac OS X 10.4/10.5
Virtual Appliance
VMware Server VMware Player
Client Requirements
(for both On Premise and On Demand versions)Windows
Outlook 2000/XP/2003/2007 Windows Mail (Vista) Windows Calendar (Vista)
Mac OS X
Entourage 2004/ 2008 Apple Mail Apple iCal Apple Address Book
Web browser
Internet Explorer 6/7 Firefox 2/3 Safari 2/3