Deleting MX records on Plesk panel is super easy and won’t take more than 2 minutes. But before getting there, make sure that your domain is pointing to your hosting name servers. If you still haven’t done this, click here to get it done. Once you’ve got that out of the way, you can proceed to modify MX records on Plesk:

1. Login to your Plesk Panel.
   
   
2. Expand the advanced Section.
   
   
3. Click on DNS Settings.
   
   
4. Tick the box next to the record name for the record type MX.
   
   
5. Click on ‘Remove’.
   
   
6. Tick the box to ‘Confirm removal’ of MX record and click OK.
   
   
7. Incase you get a notification 'Changes made to DNS are not saved yet', click on 'Update'.
   
   
   

That’s it. Once you make any changes in the DNS, give it about a couple of hours for DNS propagation to complete so that changes reflect globally.