User Guide

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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide

Chapter 6 Sender Reputation Filtering

Editing Sender Reputation Filtering Score Thresholds for a Listener

Editing Sender Reputation Filtering Score Thresholds for a

Listener

Use this procedure if you want to change the default SenderBase Reputation Service (SBRS) score

thresholds or add a sender group for reputation filtering.

Note Other settings related to SBRS score thresholds, and Mail Flow Policy settings, are described in

Chapter 7, “Defining Which Hosts Are Allowed to Connect Using the Host Access Table (HAT).”

Before You Begin

• If your appliance is set to receive mail from a local MX/MTA, identify upstream hosts that may mask

the sender's IP address. See Determining Sender IP Address In Deployments with Incoming Relays,

page 13-15 for more information.

• Understand Sender Base Reputation Scores. See Defining Sender Groups by SenderBase Reputation

Score, page 7-6.

• Choose a filtering approach for your organization and note the recommended settings for that

approach. See Recommended Settings for Different Sender Reputation Filtering Approaches,

page 6-4.

Procedure

Step 1 Select Mail Policies > HAT Overview.

Step 2 Select the public listener from the Sender Groups (Listener) menu.

Step 3 Click the link for a sender group.

For example, click the “SUSPECTLIST” link.

Step 4 Click Edit Settings.

Step 5 Enter the range of SenderBase Reputation Scores for this sender group.

For example, for “WHITELIST,” enter the range 7.0 to 10.

Step 6 Click Submit.

Step 7 Repeat as needed for each sender group for this listener.

Step 8 Commit changes.