Following instructions provided in https://developer.ibm.com/tutorials/mq-jms-application-development-with-spring-boot/, I developed a sample Spring boot web application in order to be able to send and receive messages over IBM MQ using JMS template.
In case of a MQ server not on local host, I updated the application.properties file with:
ibm.mq.conn-name=<my-server-host-name>(<my-server-port>)
Unfortunately this is not the appropriate property as the application is searching for a queue manager on localhost. I did not find in the documentation anything about the property to use for that. And yes, I gave a try to ibm.mq.host and ibm.mq.port.