Hi Chris,
Thanks for asking your question here.
It sounds like you are looking to edit your MX records and other records so you need to go to the dns management.
Here are the steps to go to your domains DNS settings:
Step 1
Log in to Plesk on your server.
Step 2
Click
Domains in the Hosting Services menu on the left.
Step 3
Click Open in Control Panel next to the domain name you want to modify the DNS of.
Step 4
Click the Show More button at the bottom of the Websites & Domains section.
Step 5
Click the DNS Settings icon.
Step 6
You will be presented with a list of all DNS records currently set up on the domain.
Edit an Existing DNS Record
Here you will be able to edit your DNS records including the MX settings.
Feel free to let us know if you have any questions!
Thanks!
Linux Support Technician
Mario Cano | CEO
