Network '{0}' has more than one network interface for server '{1}'. Correct the physical network configuration so that each ...

Network '{0}' has more than one network interface for server '{1}'. Correct the physical network configuration so that each Mailbox server has exactly one network interface for each subnet you intend to use. Then use the Set-DatabaseAvailabilityGroup cmdlet with the -DiscoverNetworks parameters to reconfigure the database availability group networks.