I have one droplet (managed with Virtualmin) hosting 3 different sites. For the time being, I have been using GSuite/Gmail for all my email needs.

For two of the domains, I need to do split delivery for email. Some users using the domains will continue to use GSuite, however some of them will use self-hosted email.

From what I have gathered so far, GSuite will handle this with split reporting. But, what I don’t know is how to set this up as far as rDNS goes…

Is the fact that I have A records pointing back to the Droplets IP, enough?