I currently use Ipswitch's Imail server & am considering moving to Exchange.
I am curious about a couple of things & hope an Exchange wizard here can
answer them.
1) I currently have 2 domains, approx 100 users in domain A & 30 in domain
B. Alot of these overlap, with some users having accounts in both domains.
Do I need a separate license for each mail account?
2) Do I need an equal amount of CALs for my server that this will be running
on?
3) What's the difference between the enterprise & standard edition?
Any other advice you may have is more than welcome.

Mike, I would strongly suggest that if you want the right answers to these
questions, that you ask your VAR. Anything you get from here is nothing but
hearsay and wouldn't stand up on its own anywhere.

That said, here is my impression. See below.

You need a seperate CAL for each person or device (depending on how you buy)
accessing the Exchange server.
You also need a seperate copy of Exchange for each server.

There is the "Server" license and the user / device CAL's. They are two
seperate thing. Essentailly if you had 80 users and one Exchange server, you
would need 1 server license and 80 CAL's

http://www.exchangefaq.org/faq/Exchange-2003/What's-New/q/What-is-the-difference-between-Exchange-2003-Standard-and-Exchange-2003-Enterprise-editions?/qid/1130
The site needs to be updated to reflect that the Standard Edition DB limit
is now 75 GB.

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