For reporting and rule creation, 
IMSVA uses
               internal addresses to determine which policies and events are Inbound
               and Outbound:
 
            
               - 
                  
For incoming messages, specify the recipient’s address,
                     which is in range of the internal addresses. For example: internal
                     address is imsstest.com, valid recipients include
                     jim@imsstest.com, bob@imsstest.com.
                
               - 
                  
For outgoing messages, specify the sender’s address, which
                     is in range of the internal addresses. For example: internal address
                     is imsstest.com, valid senders include jim@imsstest.com,
                     bob@imsstest.com.
                
               - 
                  
For both incoming and outgoing messages, the rule applies
                     to senders or recipients that match the mail address.