Testing RPC over HTTP connectivity fail

_{Thursday, January 25, 2018 10:05 PM}

hi, guys thanks for time and help i am testing my CAS server using the Microsoft Test Connectivity Site in the end of the Test i get:

Testing RPC over HTTP connectivity to server server.domain.local:  RPC over HTTP connectivity failed.

Attempting to resolve the host name **server.domain.localin DNS: **The host name couldn't be resolved

my question why the test is looking for the internal server name? this is normal?

iin the change server i have both internal and external url configure

internal: server.domain.local

external: webmail.mycompany.com

what i have to check?

_{Friday, January 26, 2018 4:00 PM | 1 vote}

Hi,

The ExRCA tool will check the connection by external settings in Exchange.
And, I suppose that the host name of Outlook Anywhere, run "Get-OutlookAnywhere | FL Identity,*Host*" to check it.

If the ExternalHostName is server.domain.local, change it to webmay.mycompany.com and retest ExRCA again.

Best Regards,
Allen Wang
Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

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_{Tuesday, February 6, 2018 3:36 PM}

Hi,

Any update about your issue?
Do you try the suggestion as I mentioned above?

If it helps, please be free to mark it as answer. Thanks for your cooperation.

Best Regards,
Allen Wang
Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

_{Tuesday, April 10, 2018 8:28 AM}

Hi,

The ExRCA tool will check the connection by external settings in Exchange.
And, I suppose that the host name of Outlook Anywhere, run "Get-OutlookAnywhere | FL Identity,*Host*" to check it.

If the ExternalHostName is server.domain.local, change it to webmay.mycompany.com and retest ExRCA again.

Best Regards,
Allen Wang

Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

I was  having the same issue and able to resolve with the instructions provided by you.