Exchange Licenses for oma users

I will be adding approx 40 users onto a exchange 2003 server using windows mobile devices none of the users will use outlook just the mobile devices. do i require a license CAL for exchange for each user ?

Also is there a way of managing the size of there folders (sent items in particular) without using Outlook.
NSSUKAsked:
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tigermattCommented:

Yes, you will still need a CAL for these users (or their devices, depending on your user/device CAL setup), since they are using an Exchange mailbox and communicating with the Exchange Server. They will also need a Windows Server CAL, unless of course the users in question already have a user CAL for when using the general network resources.

You can manage folder sizes using Mailbox Manager, a feature which is set as part of recipient policies. You can set which folders to process, what to delete based on size and age criteria and a few other things. There's a few steps on how to do it in the lower part of http://www.msexchange.org/tutorials/Mailbox-Management.html.

-tigermatt
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