I am trying to implement the check_mailq and the check_nagios for nagios-plugins 1.3.0. there are a few problems i am facing with it. 1) how are we supposed to use the host name or the host address as both check_mailq & check_nagios use the check_udp command and i am not able to use this properly. i always get the "host name was not supplied" message. if i use it then i get the message that nothing was returned. i.e. i get the message "(No output returned from plugin)". due to this, i have an unknown in my service detail. could anyone please explain me how to use the check_udp and check_mailq , check_nagios to use in nagios-plgins 1.3.0. thank you, subhadeep