There was relay control on Exchange 2000 at the virtual server level. However, Exchange 5.5 added controls to the mail service interface, where they probably be

There was relay control on Exchange 2000 at the virtual server level. However, Exchange 5.5 added controls to the mail service interface, where they probably belonged. cite: http://technet.microsoft.com/en-us/library/dd277329.aspx http://technet.microsoft.com/en-us/library/dd277329.aspx