In order to get a new IP address, you need to recreate the droplet. In order to retain your data, you can first take a snapshot of your existing droplet. You can do so by selecting the “Snapshots” tab in the server control panel.

Now, you can create a new droplet based on that snapshot. To do so, select the snapshot from the “My Snapshots” tab:

To make sure you get a new IP address, wait to destroy the initial droplet until after you create the new one. Usually people are more concerned with retaining their IP address, so the system will actually try to give you the same one if it is available.

Hello all,

If you’re just attempting to send outgoing mail from the server, I strongly recommend using a service like Sendgrid or Mandrill. They both offer free tiers. If that’s not an option, you can recreate your droplet in order to pick up a new IP address. The system attempts to reserve the IP for you if you create a new droplet with the same name as the old one. So in order to ensure that you receive a new IP, create the new one before destroying the old one.

Regarding the blacklist itself, I could suggest contacting the DigitalOcean support team directly for further assistance.

https://www.digitalocean.com/support/

As a side note, here is an interesting read on why you may not want to run your own mail server but rather use an SMTP provider:

https://www.digitalocean.com/community/tutorials/why-you-may-not-want-to-run-your-own-mail-server

Regards,
Alex