Question

How to assign a floating IP to reverse DNS

  • Posted December 7, 2016
  • DNS

It is my understanding that a reverse DNS entry should point to the server found in your A records (maybe I am off on this, and if so, feel free to let me know).

Going with that premise, I would think that digitalocean floating IP addresses should update the pointer for the reverse dns to use the floating IP instead of the droplet IP.

However, digitalocean uses the droplet IP and does not allow reassignment to the floating IP. So I have two questions: Am I off base in my analysis here? If I am not off base here, what is the appropriate way to get a reverse dns entry for a floating IP?

Thanks!

Subscribe
Share

Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Is there any plans on revisiting this question? As far as I can tell, its almost impossible to run a legitimate email server (and expect others to accept your mail) without reverse DNS working. I’m mainly talking about cPanel here. It would be great to be able to use floating IPs for migration or DR if one server died, however without DNS I don’t see another way. Thank you.

I agree. I am (or was) looking for alternatives to move from bluehost VPS, in part because of email deliverability and their issue with DKIM records. Now that I have SPF, DKIM and even DMARC set up, gmail still spams the server outbound emails because of the rDNS issue with floating IPs. Pretty much every server I run sends out email, and some are web stores. Makes little sense to move if I server mail doesn’t get to the users. A large reason for this was not to force my clients to use some other mail alternative for simple server messages.

So, another +1

I am having the same issue. Any solutions?

This comment has been deleted

+1 to this request, please

What about IPv6 addresses? How do we set reverse records for those?

Currently we do not support PTR records for floating IPs. The PTR for your droplet’s public ipv4 address is set automatically based on the name given to the droplet (if the name is a fully qualified domain or subdomain name).