I am running windows server 2008 R2 SP1 Standard. I need to install a version of exchange.
There will be less than 25 computers on the server, and less than 25 mailboxes with some off the email clients not on the server [remote stand alone computers].
What version of exchange would be the best for this server?
Is it necessary to upgrade Windows server 2008 R2 to Enterprise?
If necessary can the existing server be upgraded to Enterprise from standard without a complete re install of windows server 2008 R2?