Steps
1 To access the Mail Menu, click on the icon above the word Mail on the main screen of your cPanel interface.
2 Click on Trace an E-mail Address.
3 Enter the email address you wish to trace in the blank field and click Show Route.
4 If successful, an image will appear showing the mail servers involved in the email's path to your mail server.
Troubleshooting
This feature should only be used for email addresses that are not located on your mail server. If you use it for a local email address, no useful information will appear.