SSE Symantec Backup Exec 2012 SSE+ Symantec Backup Exec 2012 SSE+ Symantec Enterprise Vault 10 (April 2012) SSE+ Symantec Endpoint Protection 12.1 (September 2012) SSE+ Symantec Messaging Gateway 10 SSE Symantec Endpoint Protection 12.1 (September 2012) SSE+ Symantec Backup Exec 3600 Appliance (mid-market) (September 2012) SSE Symantec Messaging Gateway 10