cPanel: How to Limit Maximum Email Size or Email Attachment

Default max file size limit that can be sent and received in cPanel (Exim Mail Server) is 50 MB, and How to Limit Maximum Email Size or Email Attachment ?

To Limit Maximum Email Size do the following,

1. Login to cPanel/WHM as root
2. Under Service Configuration, Click “exim Configuration Manager”
3. Click “Advanced Editor”
4. Scroll down and Click “Add additional Configuration Setting”
5. Find “message_size_limit” in pull-down list and choose
6. Enter limit that you want to change to
7. Scroll to bottom and click “save”