Alias Domains allow you to redirect one domain name to another – for example, if you have a .com and a .ca domain name, you might have set the .com domain up as a Domain Alias of the .ca domain
When an Alias Domain has expired (or if you no longer require one of the Alias Domains), you may start to receive notifications regarding issues with them, include SSL Certificate renewal failures
This article shows you how to remove an Alias Domain that is no longer required from your Plesk subscription
1. Login to Plesk.
2. Click on Subscriptions and click the domain from list.
3. Go to Websites and Domains and scroll down to the Alias you’re wanting to remove.
4. A warning will appear for you to confirm that you will be removing the correct Alias. Once verified press the “Yes, remove” button.
5. When the Alias is successfully removed you will see a green banner appear at the top of your screen.