Exchange 2010 Public Folder Replication Issue

I have 3 Public Folder database in my Exchange 2010 environment. They are all Replicas of one another.

PF1 and PF2 are perfectly in sync but PF3 has a particular folder that has an ItemCount that is lesser than in PF1 and PF2.

I tried to manual replicate the items by going to the Public Folder Management Console and do "Update Content" and "Update Hierarchy", but it still does not update to the correct number of items.

I've checked the Replication Schedule and it is set correctly as the default of "Always" and 15 mins interval.

Any help will be much appreciated.
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frukeusConnect With a Mentor Author Commented:
I've contacted MS Support and they remove empty CN=Servers containers from Legacy Exchange 2003 Administrative Group. The container remained despite removing last Exchange 2003 server.

Found relevant info abt this problem afterwards.

Please refer to this article :

frukeusAuthor Commented:
Hi, I've read that document too but it does not discuss how to troubleshoot the replication.

My PF clearly shows all 3 PF as database replicas in the Replication Tab and the schedule is set as Always Run. But somehow, all the 3 PF items shows differing item counts.

Any ideas how I can turn on logging to check?
frukeusAuthor Commented:
I've forgot to mention the PF Folder in question is a Calendar.
Managed to find out how to increase diagnostic logging the servers on which the PF3 and PF2  resides - set as Expert for all Replication items under MS Exchange IS > 9001 Public

When I activate "Update Content", it generates a 20 over Event 3093 error.
Error -2147221233 reading property 0x67480014 on object type tbtReplication from database "Public Folder Database 03".

Any ideas to how resolve this?
frukeusAuthor Commented:
This is the correct solution.
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