MTA

Diagnostics logging service	Diagnostics logging category	Description
MSExchangeMTA	X.400 Service	X.400 protocol events, such as submission and delivery reports.
MSExchangeMTA	Resource	Events related to MTA resources.
MSExchangeMTA	Security	Events related to attempted security violations.
MSExchangeMTA	Interface	Communication among MTA components and between MTAs. Includes remote procedure call (RPC) use.
MSExchangeMTA	Field Engineering	Internal debugging trace.
MSExchangeMTA	MTA Administration	Administrator program access to MTA queues and routing information.
MSExchangeMTA	Configuration	Configuration of internal parameters and/or problems in one or more MTA configuration files.
MSExchangeMTA	Directory Access	Events related to the MTA's use of the directory.
MSExchangeMTA	Operating System	Events related to the MTA's use of Windows NT functions, such as thread creation and file operations.
MSExchangeMTA	Internal Processing	Events related to the internal operation of MTA application code. These events indicate serious problems in the MTA.
MSExchangeMTA	Interoperability	Tracks the binary content of protocol messages. Use this category and interface to log stack traces and X.400 application program interface (XAPI) traces to Mtadata\Ap*.log.
MSExchangeMTA	APDU (Application Protocol Data Unit)	Tracks complete P1 content (MTA send/receive) and fully encoded P1 APDU (communication between remote MTAs) to diagnose interoperability or conformance problems. Use this category and X.400 Service to log binary data to Mtadata\Bf*.log.