Login to Direct Admin console and click on your target domain.

Click on Spamassassin Setup as highlighted below:


Scroll down and click on the '+' symbol under Email Blacklist section. Enter the full list of emails which you intended to blacklist as seen in the example below:



NOTE: You may add email address in individual email address format e.g. ishak@yourdomain.com

Press the Save button to confirm the final changes.
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