|Component:||Microsoft Exchange Message Transfer Agent|
|Message:||A fatal directory error occurred. Change to the maximum logging level for more details. [<value> <value> <value> <value>] (16)|
By product design, the message transfer agent (MTA) relies on the directory service to correctly initialize. In Exchange 2000, MTA relies on the DSAccess to interface with Active Directory.
Check the Event Viewer for error and warning events related to MSExchangeDSAccess. Verify that the directory is reachable and all objects required by the MTA have the correct permissions.