- Plesk for Windows
- Plesk for Linux
When trying to open a domain that does not exist in Plesk like
mail.example.com or a server hostname, browser shows the content of website example.com
Set None in Tools & Settings > IP Addresses > 203.0.113.2 > Default site
In this case Plesk default page will be shown when trying to open a domain that does not exist in Plesk, or a server hostname (if it resolves to the server IP globally).