Currently I have Nagios up and running and it notifies me by email of events.
I would like to know the configuration change that I have to make, so that I will only be notified 1 time of a server going down and then only another email when it is up again.
At the moment when I server is down, I get an email every 30 minutes telling me that it is down, and I am only interested in knowing when it is up again (recovery).
I would like to know the change that I have to make in the configuration files manually. I don't use and don't want to use a fancy front-end.