My exchange server is reporting Event ID 1022 source: MS Exchange IS could not logon to mailbox windows 2000 administrator account etc... This started after i did an windows update. But i am able to logon to administrator mailbox and also all other users are able to logon. But it keeps loging this event exactly every 2 min.. Regards Praveen R --------------------------------- Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less.