How to configure domain to use only mail functionality?

Question

How to disable hosting and DNS functionality for domain and configure the domain to use only mail functionality?

Answer

• To turn off Hosting functionality go under Domains > example.com > Hosting settings > click Change and set Hosting type to No web hosting :
  

• To turn off DNS functionality go under Subscriptions > example.com > DNS settings and click Disable button:
  

  Note: In order to retrieve DKIM public keys to add to the remote DNS servers, follow this article's solution: How to get the DKIM public key from Plesk if DNS is not installed?