Exchange Server Licensing

Posted on 2005-04-06
Last Modified: 2010-04-18
My organization is thinking about setting up an exchange server but I have a question about licensing.  

I understand we need to eithor purchase a UserCAL for each user or a DeviceCAL for each device.  If we buy UserCALs do we need one for each of our employees which will have an email account, or just one for each user who will be accessing the exchange server at the same time.  For example, we may have 500 employees but no more than 100 or so would be getting their email at any given time.  

If you need one per user, the other question I had is, what happens if one user (person) has serveral email accounts?  Our director of guidance would have her regular email account, plus, do we need another CAL for that?  Basically, i'm asking if we need a CAL for each email address.

Question by:chicokid
    1 Comment
    LVL 33

    Accepted Solution

    You need a CAL for each user (regardless of whether or not they will be attaching to the Exchange server at the same time...)  Each user needs a cal.

    You do not need to buy an additional CAL for a user that has additional e-mail aliases (i.e. receiving e-mail from,,,


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