Just googling for an issue I heard about (aparently Exchange 2007 RTM might have some performance issues when you go over 500 users .. can’t be true but have the check it out)
Anyway found this on Wikipedia
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions. Exchange’s major features consist of electronic mail, calendaring, contacts and tasks, and support for the mobile and web-based access to information, as well as supporting data storage.
Cool! they should pad it out with this http://msexchangeteam.com/archive/2008/01/02/447806.aspx by Paul Bowden
Hey .. the buggers, they have taken my link of the website .. Come on guys add me back, I am doing the world a service here!
My content is still there ;-) http://msexchangeteam.com/search/SearchResults.aspx?q=flaherty