Exchange Server 2013 Content Index is in "Unknown" state.

Hi Experts,

We have two Exchange Server 2013 CU3 installed in our customer premises 6 months back on top of Windows Server 2012 OS.

From last week, we are getting the content index status as "Unknown" while checking the "Get-Mailboxdatabasecopystatus".

We have tried to reseed the database by using "update-mailboxdatabasecopy -identity <db> -deleteexistingfiles then we came to know the server is not responding on port 3863.

Attached image is for your reference.

Need support from experts to resolve at the earliest.

Regards,

Santhosh

Santhosh Sivaraman MCITP: Microsoft Exchange Server 2007/2010 | MCSE/MCSA