IT Requests not entering the Service Desk ticket queue

IT Requests not entering the Service Desk ticket queue

IT requests submitted by users via email are not entering the service desk ticket queue.  The computer running the helpdesk application hung this morning, and I restarted it.   Since then, new requests are not appearing in the ticket queue.  I have stopped and restarted the Manage Engine servicedesk server and restarted it, but this has not corrected the issue.  What am not doing correctly. Or is there something I need to start on the computer, like a service.   I was not involved with the installation/configuration/setup of the Service Desk application, so I have limited knowledge on how it operates.  
Kind Regards
Micheal Keller

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