How to Setup Spam Filtering in cPanel

March 7, 2021 / cPanel & WHM

If you need an effective way to filter email spam, you can do this using the built-in SpamAssassin tool in cPanel. In this tutorial, we’ll take you through the setup and configuration processes.

To enable Apache SpamAssassin, follow the next steps:

1. Log in to your cPanel

2. Scroll to the Email section and click on the Spam Filters icon.

3. When the SpamAssassin page opens, click the toggle button next to Process New Email and Mark them as Spam. When the button turns blue, spam filtering is enabled.

4. Enabling SpamAssissins filters out suspected emails and places them in a separate spam folder in your inbox. If you would prefer not to do this, you can activate auto-delete, which will automatically delete suspected spam emails.

Remember, some genuine emails could also be suspected of being spam. If you enable auto-delete, these will be deleted too.

5. If you wish to go ahead with enabling auto-delete, click the toggle button next to Automatically Delete New Spam (Auto-Delete). When the button turns blue, auto-delete is enabled.

Configuring Spam Filtering

Besides enabling and disabling spam filtering, you can also configure SpamAssassin by changing the spam threshold or adding addresses to whitelists and blacklists.

Changing the spam threshold

Email messages are scanned on arrival and given a score out of 10 based on the likelihood of them being spam. Spam Assassin’s default spam threshold score is 5, so any message scoring a 5 or higher will be sent to the Spam folder.

If you find too few or too many emails are being filtered, you can adjust the threshold score. To do this:

1. Go back to the Process New Emails and Mark Them As Spam section and click on the blue Spam Threshold Score link.

2. When the new page opens, click on the dropdown options box and choose the new threshold score you desire. The lower the number, the more aggressive the spam filtering will be.

3. Once you have made your decision, click the blue Update Scoring Options button to complete the process and save your changes and then click on Return to overview.

Additionally, you can also enter emails in the whitelist and blacklist to ensure emails you want to receive don’t get blocked and that those you want blocking don’t get through.

To do this:

1. Scroll down to Additional Configurations (For Advanced Users).

2. Click on the Show Advanced Configurations link.

3. Click on either the Edit Spam Whitelist or Edit Spam Blacklist settings link.

4. When the page opens, click the Add New Whitelist/Blacklist Item link.

5. Type in the name of the email address you wish to whitelist or blacklist in the input field and click the blue Update button.

6. If you wish to receive or block messages from a specific domain, rather than an individual address, you can do this by typing *

7. You can return to these pages to remove items from the lists if you wish.

For more help with cPanel, visit the cPanel Section of our knowledgebase.


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