DNS Redirection Email Server

I setup dns entries in ionos (current server) to point to another server (I added a domain for this server so all mail was able to be processed).

https://docs.hestiacp.com/admin_docs/mail.html#can-i-use-cloudflare-proxy-with-email
It is not exactly the case, but shows how dns can be changed to point to hestiacp server.

Need someone to go to ionos dns resolution and change to the email solution and restore the flow of emails.