Where are PTR records configured?

Question

Domain Name System

When checking mail for spam, the service displays: "Cannot resolve reverse DNS for sender's IP". It's a misconfigured PTR record, right? If so, where is it configured, in the domain control panel or on the hosting?

Answer 1

On the side of the provider that issued the IP address for the mail server. Those. on hosting.

Answer 2

Not every hosting is suitable for sending mail. And not on every ip address hoster support will prescribe the correct reverse dns for your domain.