Hi, We are running Exchange 2003 on Windows 2003. We have several "virtual domains" running on a single exchange server, each being isolated and independent of each other, each with their own calendar, set of public folders etc. So far so good. Everything is working ok. However, one of our clients, wants to add two more companies ("virtual domains") which will still be independent, each with their own calendar etc. But he wants to be the "super user" and be able to view the calendars of all three companies. He does not want anyone else in his three companies (virtual domains) to be able to view all three calendars, just himself. And of course, none of our other virtual domains should be able to view his calendars nor should he be able to view calendars of anyone except his three companies. Is this possible and if so, any pointers would be greatly appreciated. best regards Mike