Exchange 2013, 2016 not allow some users to send or receive (POP3) emails when they are outside of the office (access from internet)

RT 1 Reputation point
2020-05-16T05:06:06.423+00:00

Hello, we want to know how to set Exchange Server 2013/2016 to restrict some users send / receive (POP3) email when they are not in the office (from internet).

We only allow them to send/receive (POP3) emails in the office (intranet).

Azure Information Protection
Azure Information Protection
An Azure service that is used to control and help secure email, documents, and sensitive data that are shared outside the company.
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  1. Manu Philip 16,986 Reputation points MVP
    2020-05-16T06:26:05.42+00:00

    Hello,
    I have an idea to test this. I don't have a mailbox available to test it from my side. Here is the way

    1. Connect Exchange Online using PowerShell
    2. Get-CASMailbox 'mailbox name'. Preferably select a test mailbox
    3. Check the property 'ExternalPopSettings' value. In an environment with POP enabled, this value will show you the server name
    4. Set this value as False for a test mailbox. Set-CASMailbox 'Mailbox Name' -ExternalPopSettings $Null
    5. Check if you are able to disable the external access for this test mailbox. Also, restart the POP services to confirm

    If it doesn't work, I am sure that there is no way you can selectively disable/enable external Pop access for selected mailboxes and the settings applied to organization wide

    Regards,
    Manu