Hi I have a server running on Windows 2000 Server with Exchange 5.5. Yesterday mail stopped flowing and we noticed that when trying to log on as administrator it fails! The message returened is "The system can not log you on. Logon failure: account currently disabled. Please try again or consult your system administrator." This is only happening of this particlar server. When we reboot the server you can log on as administrator and mail starts flowing again. This works for an hour or two but then mail stops flowing again and you cannot log on as adminitrator. We've noticed the mail stops flowing since the services need the administrator account which is "supposedly" disabled. Urgent help please!!!