[matthewfcarlson]

Sounds like you cannot control which MQTT endpoint it is headed to? It just goes to the server of the device. Assuming you could modify the firmware, you could program it to send to a local MQTT.

[erazor42]

Simpler just update your local network dns so whatevercompany.brain.com redirect to your local 10.0.0.3 mqtt

[wongogue]

With no encryption, this isn’t a problem.