Which two could appear on a deployment checklist when integrating Symantec Mail Security 8300 in a production environment? (Select two.)

A.
Ensure that the appliance is deployed at the gateway

B.
Ensure that the firewall permits communication to and from Symantec over port 443

C.
Ensure that the Exchange Spam Confidence Level is synchronized with suspect spam score range in the Spam Scanning settings area

D.
Block outbound traffic from flowing through the Symantec Mail Security Scanners