I observed an unexpected behavior in the usage of Azure DNS Zones.
I have the following DNS Records:
_acme_challenge.<mysubdomain1> IN TXT -> any value
* IN CNAME -> <mysubdomain2>.<mydomain>.com
<mysubdomain2> IN A -> <myIPaddress>
If I am doing now a nslookup to: <mysubdomain1>.<mydomain>.com
, I would expect to get a valid response for: myIPaddress
. But the TXT record is blocking the resolution. After removing the TXT-Entry, I receive the expected result.
Do you know if this behavior is right? For me it seems wrong. But it is not really clear, if it works as expected and on purpose.
There is already a discussion about the exact same topic: https://github.com/cert-manager/cert-manager/issues/806, but not with a meaningful final result.
Hope you can help! Thanks