Pick the best tool for the job. While I'm not a big Microsoft fan -- and I'm even less of an Exchange fan -- you don't pick a server platform because it's your pet O/S; you pick a server platform because it's what you need to get the job done. If you need to run an Exchange server, then build a Windows server (or more likely, several Windows servers) and run Exchange.

From the client side, I use a Linux desktop to connect to an Exchange server for e-mail at work, and it works just fine because it supports standard SMTP and IMAPS. I greatly preferred the Postfix server we used to use (because my organization owned it and therefore I had access to it, unlike the Exchange server that our new corporate overlords mandated), but in truth, I don't really have any major complaints from a user perspective.

Interesting, because I was just reading this:

http://en.wikipedia.org/wiki/Argument_to_moderation

Warning: Links at bottom of page are highly addictive.

Actually it assigns it a value of undefined.

Did that joke just go flying over my head?

Did anybody think to check the power cord?

If justice is unavailable, I'd settle for an "accident". Those happen all the time, and can be quite gruesome.

    Totally off the real topic but Bill Gates actually rates well in the percentage of net
worth donated. http://www.businessweek.com/pdfs/2004/0448_philan.pdf

      The above link doesn't reflect my next unsubstatiated statement but Larry Elison has
historically done very poorly at giving significant percentages of his income.

Or we could put solar panels on roofs and convert the sunlight, that would ordinarily be
converted to heat, into electricity which I am sure we could find a use for.