Steve,
Yes I am certain I defined the host. I think the issue was caused
because I basically did a cut and paste from the host file on the
distributed server to the central server. I remarked out the ip of the
box IVAN (as well as many others) in the host file afterward and I think
these
[1139251531] EXTERNAL COMMAND: PROCESS_HOST_CHECK_RESULT;IVAN;0;0
[1139251531] Warning: Passive check result was received for
host 'IVAN', but the host could not be found!
This message means that Nagios cannot find a host called 'IVAN' in the
definitions.
Are you 100% sure you have defined
