How to configure the reverse DNS of a flexible IP on Elastic Metal servers
Published 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
Requirements:
- You have an account and are logged into the Scaleway console
- You have configured your SSH key
- You have created and installed an Elastic Metal server
- You have configured a flexible IP address on the Elastic Metal server
- Click Elastic Metal in the Compute section of the Scaleway Console side menu. The Elastic Metal dashboard displays.
- Click the Flexible IPs tab.
- Click «See more Icon» next to the flexible IP that you want configure. The configuration menu of the flexible IP displays.
- Click More Info to see detailed information about the IP address.
- Scroll down to the Reverse section and click on Add Reverse:
- Enter the new reverse DNS and click Edit this 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.
Note:
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