You can have MMDF maintain a complete log of authorization attempts with reasons for failure or success.
By default, the MMDF Configuration Manager sets up MMDF to log fatal errors only. To change the logging level, start the Channel Administration Manager. Then:
|fatal errors only||Logs only fatal errors. Produces a complete log of authorization attempts.|
|temporary errors||Logs both temporary and fatal errors. Produces a complete log of authorization attempts.|
|interesting diagnostics||Logs generally interesting diagnostics and errors. Produces a complete log of authorization attempts.|
|basic statistics||Logs some basic statistics about movement of messages. Produces a complete log of authorization attempts.|
|full statistics||Logs full statistics.|
|program trace listing||Shows a program trace listing of channel activity.|
|detailed trace listing||Shows a more detailed program trace listing.|
|every diagnostic possible||Logs all possible diagnostics.|
The log file's default maximum size is 1000 blocks. This value, and other log file parameters, can be modified; see the description of MCHANLOG in mmdftailor(F).