How to Enable SMTP Restrictions
Restricting SMTP enables prevention of spam scripts in WHM. Preventing mails from bypassing the mail server and the mails are routed only through MTA, mailman and root connect to remote SMTP servers.
NOTE: You Need to have root access for to follow the below steps.
Using SMTP Restrictions
1.Sign in as root user into WHM.
2.Click on SMTP restrictions in the menu on the left side.
3.Enable SMTP Restrictions to enable the service.
For further details on SMTP Restrictions in WHM, Kindly visit the official documentation.
In Mail Section click on Tweak Settings for further changes in the configuration.