1-Log into WHM and write “Mail Troubleshooter” in the search box and press enter. Click on Mail Troubleshooter
2- Write your email id in the blank text box and click on the submit button.
3- Process to troubleshooting will start. Wait for error messages. If you do not find anything, then there Are no problems from the server side.
If you need any help then you can contact us are available 24/7.