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Spam Filter General

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Use the Spam Filter General page to configure basic features of the Spam Filter module. Click Save to save any changes you make.


  • Challenge email received from unknown user – Select (check) this option to send a challenge email to unknown users. An email with verification steps will be sent automatically to unknown users.
  • Email address challenge email will be sent from – Optional. Enter an email address that challenge emails will be sent from.

Spam Summary

  • Email address that spam summaries will be sent from – Optional. Enter an email address that spam summary emails will be sent from.


  • Block email with encrypted zip file attachment – Select (check) this option to block emails with encrypted zip file attachments.
  • Block email having more than __ attachments – Enter the maximum number of attachments that will be allowed. The default is 10 attachments.
  • Block email greater than __ MB in size – Enter the maximum size (in MB) for emails that will be allowed. The default is 10 MB.

DNS Block List Servers

In this section you can enter the location of Real-time Blackhole Lists (RBLs), which provide information concerning known spamming servers that the Spam Filter Module can then use to help filter mail.

To add a server to the list, follow the steps below.

  1. From the dashboard click Spam Filter.
  2. Under Module Settings click General.
  3. Under DNS Block List Servers click Add Server. The following will be displayed.
  4. In the Host field enter the domain name.
  5. Enter a meaningful description in the Comment field.
  6. Click Save.

To delete a server click the X in the server's row.

Outbound Email Server

Enter optional text that will be added to the footer of all outbound email.

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