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 www.debouncer.com, 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 server.debouncer.com.

$ dig -x 107.191.99.18 +short
debouncer.com.
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