In my experience, this is more a problem if you are fully running your own mail servers, not so much if you are using an established email service. My MX record reflects my email provider, and my outgoing mail goes through their servers. So I’m as trusted as they are, in general. Your mail provider should have instructions on how to set up DNS for verification.
In my experience, this is more a problem if you are fully running your own mail servers, not so much if you are using an established email service. My MX record reflects my email provider, and my outgoing mail goes through their servers. So I’m as trusted as they are, in general. Your mail provider should have instructions on how to set up DNS for verification.