XCON: Setting up Advanced Logging on the Exchange 5.0 MTA

Last reviewed: February 3, 1998
Article ID: Q168906

The information in this article applies to:

Microsoft Exchange Server, version 5.0

SUMMARY

There are times when it may become necessary to enable advanced logging on the Microsoft Exchange Message Transfer Agent (MTA) in order to diagnose a problem. This is in addition to the logging provided in the Windows NT application log.

To enable the advanced logging, start the Windows NT Registry Editor and go to the following key:

   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeMTA
                     \Parameters

Find Text Event Log and set it to 1 (the default is 0).

Add the following DWORD values, entering the names EXACTLY as shown:

   Unbounded Event Log
   Unbounded APDU Log
   Unbounded Interop Log

These write to the Ev0.log, Bf0.log, and Ap0.log files, respectively.

To enable the logging operation, start the Microsoft Exchange Administrator program, open the MTA Properties page, click the Diagnostics Logging tab, and set the desired logging level on the categories in question.

During normal operation, the value for the above 3 entries should be 0. However, when a problem arises, setting any one or all of these to 1, along with setting the Text Event Log to 1, will start writing the logs to the Exchsrvr\mtadata directory.

MORE INFORMATION

Unbounded Event Log: This enables uninterupted logging to the Ev0.log file.

                     This is basically a text version of the Windows NT
                     application log and will log every event that is in
                     the application log.

Unbounded APDU Log: This enables uninterupted logging to the Bf0.log file.

                    This log is enabled by setting X.400 Service and APDU
                    logging to maximum in the MTA Properties page,
                    Diagnostics Logging tab. The APDU log is a binary trace
                    of all the ASN.1 activity within the MTA. This data can
                    be viewed with the ASN.1 viewer (Aspirin) located on
                    the BackOffice Resource Kit 2 compact disk.

Unbounded Interop Log: This enables uninterupted logging to the Ap0.log

                       file. This log is enabled by setting
                       Interoperability logging to maximum in the MTA
                       Properties page, Diagnostics Logging tab. The
                       Interoperability log is a text 'sniff' of the
                       incoming and outgoing transport activity for the
                       subject MTA.

Additional query words: kbfaq x400 spdu 1988 1984 blue red book itu ccitt
Keywords : XCON
Version : 5.00
Platform : winnt

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Last reviewed: February 3, 1998
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