Hi, All -- These days MITRE uses Exchange for mail and calendars. Our list server includes lists for all the organizational entities (departments, divisions, etc) at MITRE. We know that there is a problem with the Outlook calendar and the lists on the list server: Users can apparently send an invitation to a list on the list server, and that works OK, but if they then update the meeting things get a bit messed up, with duplicate meetings scheduled. My question to you: Is this a fixable problem, and (if so) has anyone figured out a good way to deal with it? It seems that our only recourse at this point is to create Exchange distribution lists for every organization at MITRE, but if there is any workaround we'd sure like to try it. Moreover, if anyone can provide some technical details of the underlying issues I'd appreciate -- feel free to mail me directly. Thanks, Henri Bulterman Principal Software Engineer The MITRE Corporation [log in to unmask]