If I have one Domain on Exchange 2000 with AD (Single Forest) and another Domain on Exchange 5.5 with NT 4.0, and these two domains do not trust each other, can you use the Active Directory Connector? Also, this will be a Single Exchange Organization for both above mentioned domains! How will this work for directory sync's and message traffic flow? Thanks in advance! Mike grayson-michael@xxxxxxx 301.775.4606