How can I configure reverse DNS on my droplet?

Posted December 3, 2018 3.2k views
NetworkingUbuntu 16.04

Reverse DNS is not working for my droplet even though I have set my hostname to a FQDN and nslookup works fine. However, when I check reverse DNS with, it fails.

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rDNS is checked against an IP typically. It looks OK though it’s generally not recommended to set the hostname to the domain name. Make sure it’s a subdomain like

$ dig -x +short