Observe the following requirements for Microsoft SQL Server:
Mirror Replication Agent supports only Microsoft SQL Server 2005 Service Pack 2 and later, and the database compatibility level must be set to “SQL Server 2005 (90)”.
You cannot simultaneously use Microsoft replication and Mirror Replication Agent on the same Microsoft SQL Server database. Be sure to disable Microsoft replication before using Mirror Replication Agent for Microsoft SQL Server.
Make sure Microsoft SQL Server is configured to allow a remote dedicated administrative connection (DAC).
You cannot create a Microsoft SQL Server publication on the primary database where Mirror Replication Agent for Microsoft SQL Server is running.
The Microsoft SQL Server TCP/IP protocol must be enabled.