I have read several posts out here concerning this topic and would like to know if Novell / or the experts have a stand on this. Is this supported and recommendations on how to setup for optimum performance

We will be running all our post-offices on ESX3.5 servers that are attached to an EMC Centera. Our intention is to run them on Windows2008 servers in this environment.

We will also be using Messaging Architects system for archiving.

We currently have our Post-offices on Windows2000 servers in this same environment and have major performance issues. Unfortunately cannot convince the powers that be that we should move the E-mail system to stand-alone servers.
Any advice ?