User Guide

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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 7 Defining Which Hosts Are Allowed to Connect Using the Host Access Table (HAT)
Verifying Senders
d. Submit and commit your changes.
Figure 7-8 HAT Overview
Defining Messages to Send to Unverified Senders Using the ACCEPTED Mail Flow Policy
Procedure
Step 1 Select Mail Policies > Mail Flow Policies.
Step 2 On the Mail Flow Policies page, click on the ACCEPTED mail flow policy.
Step 3 Scroll to the bottom of the mail flow policy:
Figure 7-9 ACCEPTED Mail Flow Policy Envelope Sender DNS Verification Settings
Step 4 Select On to enable envelope sender DNS verification for this mail flow policy.
Step 5 You may also define custom SMTP code and responses.
Step 6 Enable the domain exception table by selecting On for “Use Domain Exception Table.”