How to configure the reverse DNS of a flexible IP on Elastic Metal servers

Reviewed on 05 August 2024 • Published on 26 May 2021

Reverse DNS (rDNS) is the opposite of classic forward DNS, mapping an IP address to a hostname. This is particularly useful for tasks such as sending emails from your Elastic Metal server.

Before you start

To complete the actions presented below, you must have:

A Scaleway account logged into the console
Owner status or IAM permissions allowing you to perform actions in the intended Organization
An SSH key
An installed Elastic Metal server
A flexible IP address attached to your Elastic Metal server

Important

Ensure that a corresponding A-Record (IPv4) or AAAA-Record (IPv6) pointing to the IP address exists before editing the reverse DNS.

Click Elastic Metal in the Bare Metal section of the Scaleway console side menu. The Elastic Metal dashboard displays.
Click the Flexible IPs tab to display the list of your failover IPs for Elastic Metal servers.
Click More («See more Icon») next to the flexible IP you want to configure. The configuration menu for the flexible IP displays.
Click More info to see detailed information about the IP address.
Scroll down to the Reverse section and click Add reverse to add or edit the reverse DNS of the failover IP.
Note
If a reverse DNS is already set on your failover IP, the button will be labeled Edit reverse.
Enter the new reverse DNS and click Edit reverse to validate the changes.
Important
When configuring the reverse DNS for a flexible IPv6, the configuration applies to the first IP (XXXX:0) of the /64 IP block.