How to enable Spam filter in DirectAdmin?
1. Login to your DirectAdmin control panel via the URL [ https://servername:2082/ or https://serverip:2082 ]
2. Click on SPAM Filters under E-mail Manager.
3. Choose Block By and its value as per your requirement and click on block
4. Choose Adult Filter:Let it be Enabled
5. Action for filter matches: Choose Drop E-mail or Send to spambox as per you requirement.
You have successfully set Spam filter.