Is there a Mosquitto setting for retaining duplicate messages
<p>Using the Mosquitto broker, I have a single publisher that at times may send a duplicate message topics to various clients.  The clients are devices that are not always on-line and so when they do connect to the broker, they need to be able to get all of the messages that have been retained.  What we observe is that when the client is connected, all of the messages flow through, but if it disconnects and then reconnects, only the latest of any duplicate of the messages arrive.</p>

<p>Our settings are Qos 1 and retain = true.  The conf setting has no allow_duplicate_messages so the default is true.</p>

<p>Is there anything we can do to allow all of the messages to be retained.</p>