In which scenario should an administrator add MTA host information to the Internal Mail
Host page?

A.
the Symantec Mail Security 8300 is configured as a combined Scanner/Control Center
during the initial bootstrap phase

B.
Directory Harvest Attack prevention is enabled and the configured LDAP source is
situated in the internal network

C.
one or more MTAs are, with respect to inbound mail flow, upstream from the Symantec
Mail Security 8300 Scanners

D.
the Symantec Mail Security 8300 Scanners, with respect to inbound mail flow, are
deployed at the Internet gateway