Receiving the error on the application section of the event viewer.. PROCESS MAD.EXE. MSEXCHANGEDSACCETS, TOPOLOGY, EVENTID 2102 ALL DOMAIN CONTROLLER SERVERS IN USE ARE NOT RESPONDING When this occurs the store.exe sits up at 100% and all outlook connected clients are locked until it free's up. That could be 3 minutes.. or it could be 2 hours... seems totally random. Any help would be greatly appreciated. Thanks.