How to setup DNS so you can use multiple mail servers with both different mail accounts on them?
Reason I ask is because I have gone from a mail server from a website-provider to a paid solution. Not all accounts need the extra functionalities the paid provider provides. So I would like to have some email-accounts on my new paid provider and some on the old mailserver of my website provider.
Is this possible? Or is it only possible to have multiple mail-servers as fallback?