CAS Issue: OWA/Outlook remote users cannot login

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Mr.Kris

Hello,

Internally and externally we can send/recieve e-mails via OWA and Outlook. But my remote user can not authenticate either way i.e, outlook nor owa or iphone. Interestingly, I'm able to get e-mails on my iPhone but can't access via OWA remotely.

What could be the issue?

Thanks
 
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