Application Logs show the following error:
Event ID: 301 - Error .Failed to push nse to spc server. ErrorCode = The system cannot find the path specified.
Event Source: Symantec Mail Security Management Service
Symantec Mail Security for Exchange Management Service is used for sending logs and information to the Symantec Protection Center (SPC). If the SPC is not installed or being used, then SMSMSE Management Service does not have a destination to send the logging information, therefore, it logs Error ID: 301 in the Application Log.
Open the server Services and set Symantec Mail Security for Exchange Management Service to Disabled.