Is a CAL required to send e-mails through exchange 2003 smtp server

Is a CAL required in order to create a user on an SBS 2003 server which will be used just by 3CX to send out e-mails? I would appreciate a definitive answer.
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Glen KnightConnect With a Mentor Commented:
An SBS CAL is required for every user or device accessing a service hosted on an SBS network.

Therefore if you currently use Device CAL's you will need one for every device accessing the service.  If you use User CAL's you will need a user CAL.

I reserve the right to be proven wrong, you really should contact a Microsoft Licensing Specialist.  The defense of "that's what they told me on EE" will not stand up in a court of law.
I don't think so.  I think the cal would go with the mailbox not the smtp protocol.  When I check the liceseing on my Exchange 2010 servers it looks at the mailboxes not the smtp connections.
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steinmtoConnect With a Mentor Commented:
I was bored so I called Microsoft and you do need a license for direct or indirect acesss to exchange per the licensing person I talked to.
Glen KnightCommented:
Which is pretty much what I said.
Paul-itAuthor Commented:
Thanks both for this very much appreciated. I have split the points as the first is hopefully correct but the second is more definitive.
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