Hey @pbdco, as mentioned in your other topic I’ll set up a RabbitMQ test server in the next days to give this tool a closer look.
Based on your description it does indeed seem like a problem with the reverse proxy in front of your RabbitMQ instance, so I am not sure if there’s much you could do from the n8n side of things here so far (but again, I know roughly nothing about RabbitMQ as of yet).
A quick look at this thread on stack overflow suggests there might be protocol mismatch:
So you might want to verify the approaches described in there check or double-check in a RabbitMQ-specific community how to best configure an nginx reverse proxy for use with RabbitMQ.