Trying to integrate nodemailer with forwardemail to fly app


I’m trying to integrate forwardemail with my app but to do that I need to add certain records to the DNS settings that forwardemail provides. I’ve tried to look at documentation and the community forums to try to figure out how to do that but I can’t seem to find anything. Admittedly I’m new to this so I was wondering if anyone could point me in the right direction or help guide me in getting these records added to my application.

Look forward to any responses!