My doubt is how SA will come to know that particular port is used my MQ if Qmgr is down. It may be possible some user define applicaiton start to use that port
whats difference between Listener confiuration between MQ 5.3 and MQ 6.0 in unix and windows environment.
Also In MQ 6.0 If we create listener as seprate object do we need to block listener port in / ...