Disable Local Mail Server in DirectAdmin
Please do the following to disable local mail servers in direct administration:
Step 1
Log into the DirectAdmin panel.
Step 1
Log into the DirectAdmin panel.

Step 2
Click on “MX Records” in Email Management.
Click on “MX Records” in Email Management.

Step 3
Unchecked the box under Local Mail server, then click “SAVE”.
Unchecked the box under Local Mail server, then click “SAVE”.

Check out our Shared Hosting page or read more on next article >> HOW TO: Add a Addon domain in cPanel.