SonicOS 7.1 Anti-Spam

Address and Service Objects

The Anti-Spam feature of SonicOS supports Address and Service Objects to manage a customer’s email server(s). These objects are used by the Anti-Spam Service for its NAT and Access Rule policies. Automatically-created rules are not editable and will be deleted if the Anti-Spam Service is disabled.

When enabled, the Anti-Spam service creates NAT policies and Access Rules to control and redirect email traffic. The policies and rules are visible in the POLICY | Rules and Policies > NAT Rules page, but are not editable. These automatically-created policies are only available when the Anti-Spam service is enabled. For further information about these rules and policies, see the SonicWall SonicOS Rules and Policies Administration Guide.

When the Anti-Spam service is licensed and activated, the POLICY | Anti-Spam > Settings page shows a single option to enable Anti-Spam. Selecting the option invokes the Destination Mail Server Policy Wizard if there is no existing custom access rule and NAT policy for an already-deployed scenario. When you set up generated policies, the Anti-Spam service must know where the emails are routed behind the firewall. Specifically it needs the destination mail server IP address and its zone assignment. The Destination Mail Server Policy Wizard is launched if this data cannot be found.

You need the following information for the wizard:

  • Destination Mail Server Public IP Address – The IP address to which external MTAs (message transfer agents) connect by SMTP.
  • Destination Mail Server Private IP Address – The internal IP address of the Exchange or SMTP server (behind the firewall).
  • Zone Assignment – The zone to which the Exchange server is assigned.
  • Inbound Email Port – The TCP service port number to which emails will be sent, also known as the inbound SMTP port.

If this information is needed, a message displays.

Clicking PROCEED walks you through the wizard’s requests

Policies and Address Objects created by the wizard are editable and persist even if the Anti-Spam service is disabled.

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