Summary

This article explains the updated options available in the "Spam Filtering Settings" of the Inbound service configuration page, allowing users to customize the handling of suspected and confirmed spam emails.

Objective

Learn how to configure actions for inbound spam classification, including handling "Suspect Mail" and "Spam Mail" using the updated settings.

Introduction

The "Spam Filtering Settings" section has been updated to improve control over how spam emails are processed. These changes introduce renamed options and a new setting to address different levels of spam scoring.

Prerequisites

• Access to the DuoCircle portal.
• Administrator privileges to modify spam filtering settings.
• Familiarity with email filtering concepts.

Step-by-Step Instructions

1. Updated Settings Overview
   • The "Tag Action" option has been renamed to Suspect Mail Action, which determines actions for emails scored in the "suspect" range (moderately suspicious but not definitive spam).
   • A new option, Spam Mail Action, has been added to determine actions for emails scored above the "definite spam" threshold. By default, this is set to REJECT.
2. Action Choices for Suspect and Spam Mail

   Both "Suspect Mail Action" and "Spam Mail Action" provide the following choices:

   • Deliver with Tag: Adds a *SPAM* prefix to the subject and delivers the email.
   • Deliver without Tag: Delivers the email without modifying the subject.
   • Quarantine: Places the email in quarantine. Learn more about Smart Quarantine®.
   • Reject: Rejects the email and sends a delivery status notification (DSN) to the sender. If Smart Quarantine® is enabled, the sender can manually release the message.
3. Critical Considerations for Deliver Options

   Choosing Deliver with Tag or Deliver without Tag is equivalent to disabling spam filtering unless recipient-side mail filtering rules are configured.

   To utilize this effectively:

   • Implement mail filtering rules in recipient mailboxes to segregate high-scoring emails into a Spam or quarantine folder.
   • Review Headers and Banners for Phishing Protection for header and transport rule details.
4. Provider-Specific Recommendations

   For Google Workspace or Microsoft 365 users, follow these guides to configure your gateway:

   • Google Workspace: Setting up an Inbound Gateway
   • Microsoft 365: Enhanced Filtering Connector Configuration

Internal Links

• Managing Smart Quarantine as an Administrator
• Headers and Banners for Phishing Protection

Conclusion

These updated spam filtering options provide enhanced flexibility in handling suspicious and confirmed spam emails. Proper configuration, combined with recipient-side filtering rules, ensures effective spam management tailored to your organization's needs.