Exchange 2010 - mobile devices from the outside not getting mail

I have upgraded from 2003 to 2010 in Exchange.  I am currently ahving issues with users inside the building having no issues connecting to the Exchange server, but on the outside we are having issues with retrieving mail.  The mobile device will authenticate with the AD and set the account up the throws the error of cannot get mail unable to reach server.

We have a sonicwall here that I am leaning towards is causing the issue.  But cannot be positive yet.

Has anyone seen this before?
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considerscsAsked:
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Simon Butler (Sembee)Connect With a Mentor ConsultantCommented:
Exchange CALs? Exchange doesn't use CALs in any form to enforce things - it is licences on an honour basis.
If it works for some and not for others then that would indciate the problem is not with the server setup, but something with their accounts.

Have a read of Alan's article: http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2861-Activesync-Working-But-Only-For-Some-Users-On-Exchange-2007-2010.html

Simon.
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Simon Butler (Sembee)ConsultantCommented:
Mobile devices just connect via port 443, so the first thing I would suggest is that you confirm if OWA works.
If it does, then create a test account and run it through the Microsoft test site at http://exrca.com/ and see whether that connects and flags anything of interest.

Simon.
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considerscsAuthor Commented:
ok i have pinned down a little more.  I believe it to be Exchange CALs.

Many users have no issues inside or outside with their phones.  Some users cant connect inside nor outside with their phones.
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considerscsAuthor Commented:
yes i just found something similar on the web.  CALs is not the issue.  I am trying to do this on the user account now.
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considerscsAuthor Commented:
that got it thanks!

i have seen that issue before on a previous migration and forgot all about it.
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