In our network there are 3 DNS servers, one local and two centrally managed (far, far away). Regularly one of the remote DNS servers is taken down for maintenance or for other reasons not reachable, leading to notifications I am not interested in as long as only one of the servers is unavailable. When both of the remote DNS server are unvailable, I do want to be notified.
I would like to be able to send notifications based on availability of the servers within the group of DNS servers, and only have notificiations sent when only one DNS server is available. When only one of the servers is down I do not want to receive a notification.
A common way to implement a similar function is with a threshold and weights.
I don't think this is currently possible, so I guess this is now a feature request :-)
Thanks in advance.