Answer: To replicate Exchange Server 2010 public folder we need to use the Public Flder Managemnet console locted In the MMC snap-in.
To replciate public folder in Exchange Server 2010 follow the steps below:
Open Public Folder Management Console -> Click on the the fublic folder you would like to setup replication.
Right click on the folder and click on Properties.
Go To the Replication Tab.
In the Replication Tab click on add and select the server you would like to hold a second copy of the Public folder.
Select the second server Public folder Database.
After selecting the server Click OK.