Although the common practice is to use the same host account for both email and website, you can run the two services on two different servers. The article discusses the reasons why you may consider hosting your emails on a different server and how to do the setup.
set up and efficiently run a wide range of in-house and hosted data
centers.He also doubles as a freelance technical writer in the server,
storage, networks, cybersecurity, IoT and other ICT and electronics