Hello  All ,

We have Exchange Servers 2013 , We have on Active Directoty Duplicated Discovery Search Mailbox , one of them under the users OU and Others under Microsoft Exchange System Objects OU , could you please help me how i can Solve this replicated ?

Thanks a lot for help .

HI 

You can also have more than one Discovery Mailbox as well no harm in it 
If you want to delete any one of them you can go ahead and delete them any time 

Follow the below process

Delete both the discovery search mailboxes



Prepare Active Directory by running Microsoft Exchange 2013 Setup with the /PrepareAD switch in the root domain of your Active Directory forest which will created discovery search mailbox
Now enable the discovery search mailbox 

Thank you Sathish .