Dear Support,

Actually I had install zabbix server and I added Many hosts. and it's works fine without any issue. but one of these hosts are java glassfish 4 , and i was trying to monitoring the java over that host but I'm getting that error host is not reachable , also i did the below steps .

https://www.zabbix.com/documentation/2.0/manual/config/items/itemtypes/jmx_monitoring

but with no luck . also please check the attached photo