could you share what is the application server and which client (java or external services) is accessing the queue?
Our MDM is deployed on the JBOSS 7 and trying to access Queue from .net microservice
As you will be accessing the queue remotely, you may need to define the queue accordingly. This has nothing to do with MDM. You may need to refer to JBoss documentation for more details. To start with, you can try referring to this below article which gves an example of how to create a queue and connection factory, and how it can be accessed through an external code. The article shows a java code, but it should be similar to the the .Net microservices with respect to the end point URL.
Per below Jboss document, http is the default connector in the standalone-full.xml file, you can use that for client connectivity or create a remote-acceptor/remote-connector for tcp and connect accordingly.