Apache SpamAssassin


This interface allows you to configure Apache SpamAssassin™ for your account. Apache SpamAssassin is an email utility that examines incoming email and tests for spam characteristics. It uses Bayesian spam filtering and network tests to screen incoming email. This results in an overall score that Apache SpamAssassin uses to determine whether it should discard a message.

For more information, visit the Apache SpamAssassin website.

Enable or disable Apache SpamAssassin

The Apache SpamAssassin interface displays the current status of the feature.

  • To enable Apache SpamAssassin, click Enable Apache SpamAssassin™
  • To disable Apache SpamAssassin, click  Disable Apache SpamAssassin™


Spam Auto-Delete

The Spam Auto-Delete feature automatically deletes messages that meet or exceed the spam score limit.

  • To enable this feature, select the desired minimum spam score and click Auto-Delete Spam. This setting defaults to 5.
  • To disable this feature, click Disable Auto-Delete Spam. 


If you enable this feature and a message that is not spam meets or exceeds the defined score, you may lose that email. Make certain to properly configure Apache SpamAssassin before you use this feature.

Enable Spam Box


  • We recommend that you enable this feature.

Click  Enable Spam Box to cause Exim to create a  spam  folder the next time that you receive spam mail.

  • Exim sends all of the mail that Apache SpamAssassin marks as spam to this folder. 
  • This feature preserves mail that the system may mistakenly classify as spam mail.

After you enable this feature, you can click Clear Spam Box to delete the messages in the Spam Box.


If you check your mail through a POP3 client, access and empty your Spam Box with the username youraddress@example.com/spam and your email account password. If you do not do this frequently, spam may accumulate in the Spam Box and cause you to reach your email account quota.

  • You cannot use this method to access other folders on your account. Some webmail clients may require additional steps. For more information, read our How to Set Up Webmail Folders for Archived Email documentation.
  • If you are unsure of whether you use POP3 or IMAP to receive mail, you can find this information in your email application's Preferences interface.

Apache SpamAssassin™ Configuration

Click Configure Apache SpamAssassin™ to update Apache SpamAssassin's configuration. 


  • Click Save to store your changes.
  • To add more than five addresses to the blacklist or whitelist, fill in the first five text boxes and click Save. Additional text boxes will appear.
  • When you add addresses to the blacklist or whitelist, use * as a wildcard to represent multiple characters and ? to represent a single-character wildcard. The following examples demonstrate how to properly use wildcards in the blacklist:

    • user@example.com — Blacklists or whitelists a single email address.
    • *@example.com — Blacklists or whitelists all of the addresses at example.com.
    • ?ser@example.com — Blacklists or whitelists a single character in an address at example.com (for example, user@example.com, but not Auser@example.com).


Apache SpamAssassin may incorrectly tag some mail as non-spam messages. If these messages often come from specific addresses, you can blacklist them to ensure that Apache SpamAssassin tags their messages correctly.

To do this, enter the address in one of the blacklist_from text boxes.


To blacklist email addresses on multiple accounts, use the Exim System Filter File.



Apache SpamAssassin examines every email message for spam characteristics and assigns it an overall score.

Use the required_score text box to set the required score to mark a message as spam. The default setting is 5.0, which is aggressive. It is suitable for a single user, but ISPs should set the default to be more lenient (for example, 8.0 or 10.0).


Apache SpamAssassin uses hundreds of tests, and you can assign scores to individual tests to configure Apache SpamAssassin for your server.

To do this, perform the following steps:

  1. To review the default scores, run the following command on the command line:

    grep -R score /var/lib/spamassassin/* |less
  2. You must know which version of Apache SpamAssassin runs on your server. To check your version of Apache SpamAssassin, run the following command:

    /usr/local/cpanel/3rdparty/bin/spamassassin --version
  3. Enter individual test scores in the score text boxes in the following format:

    "score" "TEST_NAME" "1 or 4 positive or negative numbers"

The following table indicates when Apache SpamAssassin uses each score.

Score used
Bayes test
Network test
First Score Disabled Disabled

Second Score

Disabled Enabled
Third Score Enabled Disabled
Fourth Score Enabled Enabled


For example, you could enter the following individual test score:

score INVALID_DATE 3.2 3.3 2.5 2.1

This example sets the scores that Apache SpamAssassin assigns to a message with an invalid date in its header.


  • If you only list one number, the test uses that score.
  • Set a score to 0 to disable the test.

In the example above, 3.2 is the first score, 3.3 is the second, 2.5 is the third, and 2.1 is the fourth. If you enter four numbers, as in the example, the score that Apache SpamAssassin uses depends on the Bayes and network tests that are enabled in your installation of Apache SpamAssassin.


Add email addresses that Apache SpamAssasin often blocks, but from which you wish to receive mail, to the Apache SpamAssasin whitelist.

To do this, enter the address in one of the whitelist_from text boxes.

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