Hello, during a Meraki MX95 firmware upgrade from version 16.16.8 to version 18.107.2 we received a 'misconfgured DNS' alert on the dashboard. Additionally, users reported slow website loading. We rolled back to fix this issue. Does anyone have any ideas on what might have caused this and how we can avoid it happening again during the next upgrade attempt ? Thank you kindly.
Do the DNS servers that the MX is configured to use look correct? This alert often happens when the configured DNS servers do not return sensible replies.
