Set DNS entries correctly


#1

The following scenario is present.

hostname server.example.cloud is the Proxmox server with IP 185.xxx.xx.197 (the Proxmox was installed on a KVM)
hostname box.example.design is the mail server (mailinabox) with the IP 185.xx.xx.204 which is a container

My mail server issues the following error message:

Your box’s reverse DNS is currently [Not Set], but it should be box.example.design. Your ISP or cloud provider wants to set up reverse DNS for your box.

Somehow I have now lost the overview and need help.

I would like to have that.

DNS entries for the Proxmox should be adjustable via my domain provider (namecheap). And the Proxmox server should be reachable at the URL https://server.example.cloud:8006

DNS entries for the mail server are created and managed by the mail server itself. How should I proceed now to do that?


#2

Contact your ISP - Only they can set the PTR for you.


#3

thanks, after rdns was set everything works again.