I am in the process of configuring our server for virtual orgs. Used KB article: 318635 and 280435 my problem is the Global address list is visible for all users. The offline filtered lists are working fine its just the global list which is visible to all. Also step 5b of article 280435 states to delete the "Default Global Address List" but if I do this no users can login as exchange appears to use this list to verify them. e.g. when you press the 'check name' button in the account settings. What am I doing wrong? regards Ryan