You crack me up....
To comment further on Steven Hewitt's comments. I don't give a damn if we get into a flame war, you clearly have not done your research:-
- There is nothing like Exchange for Linux
Thank Christ for small mercies - Exchange is limited in functionality. If you want a true collaboration run IBM/Lotus Domino. Top notch support for a commercial offering with true collaborative applications.
Oh yeah and there's the small matter of Lotus Notes running natively on Windows, MAC and LINUX too. In case you don't know Lotus Notes is the client component that provides all the end user tools a user could want.
The latest and greatest release has in-built productivity editors (similar to Open Office), making Lotus Notes a one stop solution for many businesses wishing to run a supported Linux environment at the desktop.
Honestly, I can't believe I'm the first to point this out, the bias towards Microsoft when discussing Linux is simply staggering.
Mike