Reverse DNS (rDNS), or a PTR record, resolves an IP address back to a hostname. Setting up rDNS is essential if you are running a mail server, as it helps prevent your emails from being marked as spam.
Prerequisite: Before you can set a PTR record, the Forward DNS (A or AAAA record) for your chosen hostname must already resolve to your server’s IP address. If it does not, the system will not allow you to save the rDNS record.
How to set a custom PTR record
Update Forward DNS
First, log in to your domain registrar or DNS provider (e.g., Cloudflare) and create an A Record (for IPv4) or AAAA Record (for IPv6) pointing your desired hostname (e.g., server.yourdomain.com) to your server’s IP address. Wait a few minutes for this to propagate.
Access Your Server
- Log in to the client portal.
- Click on Services > My Services from the main navigation menu.
- Find your active server in the list and click anywhere on the row to open the management panel.
Open Network Settings
Scroll down the server management page and click on the Network tab.
Configure rDNS
Scroll down to the Reverse DNS (PTR Records) section.
Save and Propagate
Enter your desired hostname (the one you set the A record for) and click save. Within minutes, your rDNS will propagate globally.
