Since August 23 we are getting flapping ping errors for one of our domains. The behavior is something like
- A couple of hours the domain is unpingable
- About on hour no problems
- A couple of hours unpingable again
- Then some time no problems
This repeats for the last 8 days now.
The error message is always the same “DNS resolution error for …”. However, if we manually resolve the domain it works without errors. Also pinging the domain does not give us any errors.