We have 2 exchange servers and two hub servers and one DR exchange serverDR exchange server recently always failed in replication. Not sure what canbe the cause. ( we don't use Edge Transport server)Anyone has any idea what can cause the replication failure?ginger

humm lot of causes....bandwith, database corruption, logs corruption etcCapecolMCSA - MCTS Exchange Server 2007 - 2010

Please check the status of SCR and services Get-StorageGroupCopyStatus Test-ReplicationHealth Test-ServiceHealth Is there any related event in the application log? Please also run ExBPA for health checkJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

I have also faced the problem of replication failure with DR Exchange Server. But in my case the connectivity is the main issue, as I have resolved it with some R&D. But the replictaion problem is still there. ExBPA is not executing and event log is giving something 494FDFC1E3 number, about which I know nothing. Is anything related to EDB file is the Issue and should I use EDB Repair software to repair the Exchange server files? Please help. Thanking you in anticipation.

Please provide the detailed output for the failed replication What’s the output for the cmdlets above?James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com