The broker does not guarantee that the message will only be delivered once, it only guarantees it will be delivered at least once, thus some deduplication mechanism needs to be utilized.
Since there's no strict way to ensure the uniqueness of Message-IDs can we also compare recipient address, and Subject, and if the messages appear to be different with same Message-ID can we add some warning into a log, and probably notify admins?
The broker does not guarantee that the message will only be delivered once, it only guarantees it will be delivered at least once, thus some deduplication mechanism needs to be utilized.
Since there's no strict way to ensure the uniqueness of Message-IDs can we also compare recipient address, and Subject, and if the messages appear to be different with same Message-ID can we add some warning into a log, and probably notify admins?