I am running Exchange 2003 and just recently migrated from Exchange 5.5. When the 5.5 server was still running I could create new users and intern create thier mailboxes. It would then put them in the address list. Now with the 5.5 server gone and I am running in Native mode whenever I create a user and create thier mailbox it doesn't put them in the address list. If I go to the ADSI Editor and look at the showinaddresslist attribute there is nothing there. Everyone that was moved over and that I created with the 5.5 server running, have entries for that attribute. I have deleted and recreated new RUS's and ran domainprep again and it still is not working. I am completely out of ideas. Any help would be greatly appreciated. My email address is email@example.com.