The following support article demonstrates how to enable email email through a Virtual Private Server (VPS).
- Once logged into Plesk, from the “Server Management” tab on the left, click on “Tools & Settings”.
- Under “Mail” click on “Mail Server Settings”.
- Under “Relay options” select “Authorization is required:” and then select from the two options for authentication based on your requirements.
- Click “OK”.
This will allow email relay for all customers of your VPS.