Clearing out a corrupt transport queue.
MSExchange Transport Service will not start. Application eventlog has logged Source ESE, EventID 529 with this in the details. bytes failed verification due to a corrupted checksum log record. The read operation will fail with error. If this condition persists, restore the logfile from a previous backup.
Stop the MSExchange Transport Service
Go to C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\data\Queue\ (if installed in default location)
Create New folder OLDQueue,
Move all files in the Queue folder to new OLDQueue folder.
Start the MSExchange Transport Service
A new database will be created and your queue will be cleared.