- Plesk for Windows
- Plesk for Linux
How to configure a domain to use an external mail server in Plesk?
In Plesk go to Domains > example.com > DNS Settings and set the domain MX record to point to an external mail server. Set a high priority for it.
Go to Domains > example.com > Mail Settings and disable the option Activate mail service on this domain.
Apply the changes.
Note: For Windows, it is required to remove the domain from MailEnable list also.