its under internet email autoprotect

1. 
   in the Symantec Endpoint Protection Manager.
2. Under Clients, select the group that holds the clients.
3. Click the Policy tab.
4. Click the Location Specific policy for AntiVirus and AntiSpyware
   Note: It may be renamed due to the migration.
5. Click Edit Shared.
6. Select Internet Email Auto-Protect
7. Under the Advanced tab, verify the POP3 and SMTP port