Set up Exchange administrator on my xp pro workstation. Had problems with MAPI errors when trying to change distribution list membership. Installed Terminal Services on the Exchange 5.5 box, and have been using that to make changes in Exchange. Everything works fine this way except I still get MAPI error when I try to do anything with the distribution lists. Really funny since a collateral issue I am trying to resolve is that any user with an outlook client can alter the list membership. Any thoughts on either problem would be appreciated. Thanks.