SMTP setting for message from server sought Almalinux8

Domain at IONOS
DNS set to my fixed IP
I can't find a way to configure email delivery for status reports on the server (server.example.com).

Does anyone have instructions for DNS entries at IONOS and CWP? Almalinux 8

I would also use Gmail.

The main thing is that the server sends the status via email.

Thanks

Translated with Google

If anyone speaks German, I would be very grateful.