i can’t change domain servers on my hosting Aruba. Aruba sended me this message:
Dear customer, regarding your request to modify the authoritative Name Servers I inform you that the Italian Authority for the registration of domains with extension . IT (Nic-IT) failed for the following reason:
Yeah, the host used for the MX entry, however the entire set of IP addresses seems to be invalid as these ae Cloudflare addresses.
@sabattini.mat, you best pause Cloudflare for now and clarify the IP addresses with your host. This is a different issue from what you mentioned, but these IP settings won’t get you far either.