How to generate a DKIM and SPF record for a domain?

Question

SPF

We plan to park the domain on the server and send emails from it. To do this, we need to generate a DKIM and SPF record for the domain. Tell me how to do this and what else do we need to do?
In fact, the SMTP server will be mailgun.com
The main domain will be parked on our server, i.e. the queue will be created from it.

Answer 1

dkimcore.org/tools