HomeBare MetalElastic MetalHow to
Configure reverse DNS of a flexible IP
Update content

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

Reviewed on 17 July 2023Published on 26 May 2021

Reverse DNS, or rDNS, is exactly the opposite of classic forward DNS as we know it. Forward DNS maps a hostname to an IP address. Reverse DNS means we are mapping the IP address to a hostname. This can be very useful, especially if you want to send emails from your Elastic Metal server.

Security & Identity (IAM):

You may need certain IAM permissions to carry out some actions described on this page. This means:

  • you are the Owner of the Scaleway Organization in which the actions will be carried out, or
  • you are an IAM user of the Organization, with a policy granting you the necessary permission sets
  1. Click Elastic Metal in the Bare Metal section of the Scaleway console side menu. The Elastic Metal dashboard displays.
  2. Click the Flexible IPs tab.
  3. Click «See more Icon» next to the flexible IP you want to configure. The configuration menu of the flexible IP displays.
  4. Click More info to see detailed information about the IP address.
  5. Scroll down to the Reverse section and click on Add reverse.

    If a reverse DNS is already set on your failover IP, the button is labeled Edit reverse.

  6. Enter the new reverse DNS and click Edit reverse to validate the changes.

    When configuring the reverse DNS for a flexible IPv6, the configuration applies to the first IP (XXXX:0) of the /64 IP block.


Make sure that a corresponding A-Record (IPv4) or AAAA-Record (IPv6) is pointing to the IP address exists before editing the reverse DNS of an IP address.

See Also