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Event ID: 223 Source: ExchFailover

Source
Level
Description
ExchFailover start failed due to an Active Directory error.
Comments
 
If Server A is an Exchange server and Server B another one and A and B monitor each other with Double-Take, this event is logged on B after it has crashed and rebooted. It has the IP address 0.0.0.0 now and cannot reach the Active Directory while it tries to fail over the Exchange server (since the monitor for Exchange is still running). Do a failback on A before booting B to prevent a false failover.

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