Figure 1: Output from the Get-TransportServer Command

MessageTrackingLogEnabled                 : True
MessageTrackingLogMaxAg                   : 30.00:00:00
MessageTrackingLogMaxDirectorySize        : 250MB
MessageTrackingLogMaxFileSize             : 10MB
MessageTrackingLogPath                    : C:\Program Files\Microsoft\Exchange  Server\TransportRoles\Logs\MessageTracking
MessageTrackingLogSubjectLoggingEnabled   : True