But you make a mistake.
We have tested many servers that the monitor marks as bad, and then you get mailed.
Where “ntpdate -q” gave a perfect response.
Also the pool gives at any time 4 servers via a DNS-request.
We have PROOF the servers are NOT broken, yet the monitor marks them bad, that is the problem.
In short, the pool itself is being handicapped because the monitor marks far to many servers as bad, when they are not bad at all.
Most of those servers being in Europe, the biggest pool of them all, but the monitor can’t monitor them properly.
You are missing the point, the servers in question ARE reachable…just the monitor is getting a timeout, but the timeout is false to the rest of the world.
The purpose of a monitor is to check if servers work, but if the monitor is false…then what? And the monitor is falsely marking good servers as bad.