“The fully qualified domain name for node ‘DAG1’ could not be found” when trying to add a mailbox server as a member of the DAG.

Scenario:  When trying to add the first mailbox server to a new DAG, you receive the following error:  The fully qualified domain name for node ‘DAG1’ could not be found

Solution:   Add the FQDN to the dNSHostName AD attribute of the DAG for the computer account.

 

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