I'd assume when using a common DNS Server like quad9, Cloudflare, Google etc. this issue would not appear.
The real issue here is the backup stack which miserably end backup tasks when there is no real errors, but maybe a badly handled timeout (what is a timeout today, 1ms, 10ms, 100ms, 1s) of some sort.
Using common private and big tech dns-to-rule-them-all to solve some kind of issue is not my way of thinking, sorry.
But whatever, thanks for your time.
