Hi jnorie,
Thank you for joining the Nagios Community Forum. Glad to have you here.
It sounds like the Nagios process is not running. You can check this by with the following command.
When a notification is sent you will see an entry in both the nagios.log and the mail log. Check the nagios,log as well for outgoing notifications.
Code: Select all
tail -n 100 /usr/local/nagios/var/nagios.log
You should see an entry like:
[1618490021] HOST NOTIFICATION: nagiosadmin;192.168.1.1.;DOWN;xi_host_notification_handler;CRITICAL - 192.168.254.23: Host unreachable @ 192.168.23.112. rta nan, lost 10
The notification handler will be a different command for Nagios Core. If that's working, then it's likely an issue with your mail setup.
Let us know what you find out.
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