Reverse DNS (PTR) for mail

Reverse DNS, or a PTR record, maps your mail server's IP address back to a hostname. Many receiving servers - including major providers - check that the sending IP has a valid PTR that matches the sending hostname. A missing or mismatched PTR is a common reason mail is treated as suspicious.

Key points:

• PTR records are set on the IP address, not your domain's zone, so they are controlled by whoever owns the IP - in this case Dirham A Day for our shared servers.
• On our shared hosting, the server already has correct reverse DNS configured, so your outbound mail passes this check automatically.
• If you have a dedicated IP or a VPS, you should ensure the PTR matches the hostname your server uses to send (its HELO/EHLO name).

To check the current PTR for an IP, you can use an online reverse-DNS lookup or the command dig -x <ip>. The PTR hostname should also have a matching forward (A) record - this "forward-confirmed reverse DNS" is what fussy providers look for.

If you run a VPS with us and need the PTR set or corrected for your mail hostname, open a ticket and we will configure it. For shared hosting you normally do not need to do anything. Questions about reverse DNS? Contact support@dirhamaday.ae.