Setting up a Reverse DNS (rDNS) record, also known as a PTR record, is a crucial step for server administrators, especially those managing mail servers. In order to setup the rDNS for the main IP of your VPS, you must first possess your own domain name. A correctly configured rDNS record increases the trust level of your server and helps prevent your emails from being flagged as spam.
Key Points
- A PTR record maps an IP address back to a domain name, which is the reverse of a standard A record.
- The domain or subdomain used for rDNS must already point to your VPS IP via an A record.
- Cloudflare users must ensure that the subdomain used for rDNS is not proxied (grey cloud).
- Configuration is performed directly in the VPS control panel under the Network Details section.
If your domain is already pointed towards your VPS IP (for instance, if you are using our nameservers), you can directly use the domain name as the rDNS. Otherwise, you will need to create a specific A record, such as mail.mydomain.tld, and point it towards the VPS IP at your domain registrar or DNS provider. Once your IPv4 setup is complete, you may also want to enable IPv6 for your MVPS server to ensure modern connectivity standards.
How to configure the PTR Record in the Control Panel?
After ensuring your A record is correctly set up and, if using Cloudflare, making sure it is not proxied, follow these steps to setup the rDNS:
- Navigate to your VPS details page in the client area.
- Scroll down to the Network Details block at the bottom.
- Locate your Main IP and click the edit icon on the right.
- Enter your desired domain name in the input box and save.
Please note that it might take a few minutes for the record to propagate throughout the global DNS system. Utilizing optimized RAM and DISK resources on our unmanaged VPS platform ensures that your server services, such as mail daemons, will handle these network lookups efficiently once the record is active.
While we provide the tools to manage your network settings, these are unmanaged services, and the correct alignment of A records and PTR records remains the responsibility of the administrator. Our support ensures that the VPS functions and network infrastructure are operational.
