Go to MailingBoss, click on Domain, proceed to Sending Domains, choose the external domain you want to connect with our server, then copy and paste the 3 separate entries into where you have your domain hosted.
Make sure it is the same as the picture below.
BEFORE:
![](https://support.builderall.com/franquias/2/73748/editor-html/3482399.png)
AFTER:
![](https://support.builderall.com/franquias/2/73748/editor-html/3482400.png)