To set up rDNS on your VPS or dedicated server, you will first need to log into your control panel. Once you are logged in, you will need to find the service that you want to set up rDNS for. Look for the network section and look for rDNS. Once you find it, you can edit the settings.
You will need to enter the domain name or hostname that you want to use for rDNS. This should match the hostname that you have set up for your server. Once you have entered the domain name or hostname, click on the "Save" button to apply the changes.
It's important to note that the changes may not take effect immediately, as it can take some time for the DNS changes to propagate throughout the internet.
