How do you connect to a Azure Event Grid Namespace using cMQTT components?

[MTolman1694485591]

I've been attempting to connect to our Azure Event Grid Namespace using the cMQTT and cMQConnectionFactory components in a route but haven't been successful yet.

The error I'm getting is 'Not authorized to connect (5)'.

Here is my current configuration.

Any suggestions are much appreciated. 

Note: I've been able to connect to the event grid using MQTTx and with the same parameters and certificated.

[MTolman1694485591 · Accepted solution]

In case it helps anyone, I solved the issue. I've resolved this by enabling the X.509 certificate authentication and setting the Alternative source field in client certificate for client authentication name to Certificate DNS in Azure Event Grid Namspace