How do you "move" a droplet that acts as a mail server?
Currently I have one large droplet that serves several domains and also acts as a mail server. I want to take advantage of the new DI pricing and run several droplets instead of the one large one. (Basically I want one mail droplet and two "site" droplets, one live and one for testing.)
My only worry in doing this is that my current large droplet also acts as a mail server. What I'm worried about is if I do the following...
- Take an image of existing large droplet, let's call it droplet.info
- From the above image, create newdroplet.info,
- Destroy droplet.info.
- Rename newdroplet.info to droplet.info
...will this lose the current reverse DNS lookup or will it stay the same? (DI assigns this based on the droplet name.)
If I will lose the existing reverse DNS, does that mean I also lose the credibility/reputation my mail server currently has built up? It took ages to get it working and so I'm a bit scared to do the above.