1. Log in to your account at www.dreamhost.com. 2. Click Mail on the left side and select MX from the drop-down menu. 3. Click edit next to the domain you will be using with Google Apps. 4. Under Custom MX Records, delete all existing MX records. 5. Enter ASPMX.L.GOOGLE.COM. in the first text box. 6. Click Update your custom MX records now!