You can configure the internal domain list to allow Deep Discovery Email
                  Inspector to determine whether a message is
               incoming or outgoing.
If the domain of a sender address is in the internal domain
               list, Deep Discovery Email
                  Inspector considers messages from
               the sender as outgoing messages. Deep Discovery Email
                  Inspector
               applies policies based on the message direction.
|  | NoteIf you do not add any entries in the internal domain list, Deep Discovery Email
                                 Inspector considers all messages as incoming
                              messages by default. | 
 
		