Exchange 2016 - Outlook inside company network CANT connect without Internet connection.

Gudakesh Sharma 26 Reputation points
2021-03-11T16:50:35.257+00:00

Outlook inside company network (Intranet) can not load or connect to exchange 2016 automatically without aan internet connection. Both my lab exchange 2016 server and lab PC with outlook 2013 are on same network but without Internet it does not connect to exchange. When i turn Internet ON then it works. AutodiscoverServiceInternalURI for my CAS service is - https://autodiscover.domain.com/autodiscover/autodiscover.xml. I have also checked with https://serverfqdn/autodiscover/autodiscover.xml AutodiscoverServiceInternalURI is responsible for connecting within Intranet, correct ? What am i missing here ?

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Eric Yin-MSFT 4,386 Reputation points
    2021-03-12T07:11:39.58+00:00

    Hi,
    Which URL is set for AutodiscoverServiceInternalURI actually?
    When you turn Internet OFF, pressing CTRL and right-click Outlook icon, select Test Email Autoconfiguration, typing the account and password, a normal test looks like:77047-3.png


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