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CatherineJaszewski-5685 avatar image
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CatherineJaszewski-5685 asked CatherineJaszewski-5685 commented

Witness Server for Exchange 2019 DAG

I am building a DAG that will have only two member Mailbox servers.

Can I use out Edge Transport server which is not in our domain but in our DMZ?

Or is is better to use a non-exchange server on the same subnet?

Please advise.

Thank you

office-exchange-server-administration
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AndyDavid avatar image
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AndyDavid answered CatherineJaszewski-5685 commented

You will have to use a domain-joined server.
It can be an Exchange Server that isnt part of the DAG, but best just to use a small virtual server for just that purpose.

it doesnt have to be on the same subnet

https://docs.microsoft.com/en-us/exchange/high-availability/plan-ha?view=exchserver-2019#witness-server-requirements

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Thank you Andy!
I kind of figured it after I posted the question. The "DAGFileShareWitness" folder would need access to our domain..

Thank you!

As always your advise is appreciated!

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