Comment 2 for bug 1661510

One possible approach would be to set the 'mandatory' flag when sending the message. This should cause the broker to send back the message with a "NO ROUTE" error. Not sure exactly how well this is supported (or if it would even work).

Option 1 isn't guaranteed to work since different servers can use the same exchange. Another server may have already created it for its own queue.

Not sure exactly if option 2 is possible with the kombu library, and even if it was there'd be no guarantee that the queue won't be deleted before the client sends the message.

Option 3 will lead to stale RPC requests building up in rabbit's queues.