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I am looking to move to Exchange 2007 and wondered if the following is correct:<br />
<br />
I have currently EX2003 Standard with OWA and OMA on the same server.<br />
<br />
With EX2007 is using EX2007 Standard with standard CAL's with the Mailbox and Client access roles the correct options?<br />
<br />
Also can roles be added and taken away at a later time?
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I am looking to move to Exchange 2007 and wondered if the following is correct:

I have currently EX2003 Standard with OWA and OMA on the same server.

With EX2007 is using EX2007 Standard with standard CAL's with the Mailbox and Client access roles the correct options?

Also can roles be added and taken away at a later time?

Exchange 2007 Roles &amp; CAL's

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange 2007 Roles &amp; CAL's

Exchange 2007 Roles & CAL's