This article covers how to reject emails based on the spam score at SMTP time. This will prevent the server from sending out mail delivery failure notices for such spam emails.
- Log into WHM.
- Navigate to "WHM / Service Configuration / Exim Configuration Manager."
- Find the "Apache SpamAssassin™ reject spam score threshold" setting to the minimum score to reject. Any message that is identified above that score will be discarded on arrival.
- Click the "Save" button at the bottom of the page.