Reverse DNS maps your server's IP back to a hostname, which is important for sending email so messages aren't flagged as spam. Unlike normal DNS, only your provider can set the PTR record for your IP.
- First create a matching A record pointing your hostname (e.g.
mail.yourdomain.com) to your VPS IP. - Check your VPS control panel in your client area for an rDNS or PTR option and enter the hostname there.
- If you don't see that option, open a ticket with your IP and the desired hostname and Toshost will set it for you.
Confirm it later with dig -x your-server-ip or host your-server-ip. Changes can take a little time to propagate.
