Just want to use DreamHost for DNS? You can do that!
Login into your Panel and go into Domain > Registrations.
Click the “Add Hosting” button on the far right.
It will redirect you to a new page and from that page you can select from “Fully Hosted, Redirect, etc”. The very last one is “DNS Only”.
Go ahead and select that and there you go!
You can also go to the Manage Domains page and click on (Add New Domain / Sub-Domain button), and scroll to the bottom of the next page to set it up for DNS Only.