You are managing the IIS server where MessageMaster console and EventMaster Server are installed, and you find that the EventMaster directory (MessageMaster\data) has logging turned off.
This is by design. By default, the EventMaster data directory (MessageMaster\data) is configured not to log connections in the IIS log. In most cases this is not required, and it avoids generating a high volume of log messages (all EventMaster clients connect to the EventMaster server ever 4 hours). To change this setting, use the Internet Information Services management console to re-enable IIS logging on this directory.