This does not apply to the C codebase.
MQe provides event log mechanisms and interfaces that can be used to log status. For example, you can request a log entry when a queue manager starts.
Logging is, by default, written to a file, but you can intercept this and direct it elsewhere.
The MQe event log does not log message data and cannot be used to recover messages or queues.
Parent topic: How MQe works