Event ID: 341 (Failed to load Symantec Premium AntiSpam engine) or Event ID: 514
Conflicts with licenses in the Licensing folder
Backup and remove all license files (*.slf) from the default licenses folder (c:\Program Files\Common Files\Symantec Shared\Licenses)
Re-install your currently valid license from the SMSMSE console (Admin >> Licensing >> Browse and "Install")
Disable and re-enable Premium Antispam (Policies >> Premium Antispam Settings >> "un-check" Enable Premium Antispam and deploy changes, then "check" Enable Premium Antispam and deploy changes)
Review Windows Application Event logs and confirm that the errors are no longer appearing.
Applies To
Windows 2003 / Exchange 2003