Hi Iam getting this error in DAG and queue length its very high for all database.. The Microsoft Exchange Replication service was unable to perform an incremental reseed of database copy 'Manager\MBX1' due to a network error. The database copy status will be set to Disconnected. Error An error occurred while communicating with server 'MBX2'. Error: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

Hi Vino, Is this a cross-site DAG deployment? If yes, please check whether AD replication is OK or not first. Please also run the following 2 cmdlets and post the results here. Get-MailboxDatabaseCopyStatus Test-ReplicationHealth Monitoring High Availability and Site Resilience http://technet.microsoft.com/en-us/library/dd351258.aspxFrank Wang TechNet Community Support

Hi Vino, Is this a cross-site DAG deployment? If yes, please check whether AD replication is OK or not first. Please also run the following 2 cmdlets and post the results here. Get-MailboxDatabaseCopyStatus Test-ReplicationHealth Monitoring High Availability and Site Resilience http://technet.microsoft.com/en-us/library/dd351258.aspxFrank Wang TechNet Community Support

Hi Vino, Any updates?Frank Wang TechNet Community Support