Are there anyway for duplicated message to be dead letter upon published? [Question]

[cha45689]

I would like to ask whether it is possible that when message is publish and consider duplicated it will be route to dead letter exchange and queue?

desired behavior

1. there is one message with x-deduplication-header : "1" already in queue
2. I try to publish another message with x-deduplication-header : "1"
3. the message in 2. should be route to dead-letter-exchange / queue

[noxdafox]

I am unsure whether it is possible. I will have a look at RMQ source code to see if this can be easily supported.

[noxdafox]

Since 0.7.0 and RMQ v4.1.0, duplicate messages will go to the configured deadletter queue.