Office 365 email without Internet!

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  • Robbiedoo

    Hi all
    I have a client with, until recently, SBS2003 on premise server which needed upgrade so we’ve introduced a new server Windows Server 2012 and migrated the email to Exchange Online via a new Office 365 subscription. Everything’s working great except that he now wants to restrict Internet access to 0 for one user. Since Exchange is online and authentication is done over ports 80 and 443 (I understand) if I block Internet as requested, email will stop working.

    Any suggestions?

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