Sometimes it can happen that MQTT messages appear out of nowhere and it is unclear where it originates from.
By connecting to the VerneMQ pod you can execute the following troubleshooting commands:
vmq-admin session show
This shows all connected clients
vmq-admin trace client client-id=united-manufacturing-hub-mqttkafkabridge-5d97f986dd-vr652
This prints all communication of a single client