We didn't find a mail server (MX Record) behind your domain name, setting up the correct mail to be sent from the server?

Question

Email

I set up sending a letter from the server, but one item does not like the mail tester mail-tester.com

We didn't find a mail server (MX Record) behind your domain name (my domain).
We check if there is a mail server (MX Record) behind your domain name (my domain).
You may want to publish a DNS record (MX type) for the domain name (my domain) or use a different bounce email address.

I don't understand how to fix it?

Answer 1

Add an MX record for your domain, as described in the recommendation.