Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Chapter 5      Configuring the Gateway to Receive Email
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Figure 5-33
ACCEPTED Mail Flow Policy Envelope Sender DNS Verification 
Settings
Step 3
Select On to enable envelope sender DNS verification for this mail flow policy.
Step 4
You may also define custom SMTP code and responses.
Step 5
Enable the domain exception table by selecting On for “Use Domain Exception 
Table.”
Step 6
Submit and commit your changes.
And for the last step, create the sender verification exception table to list 
exceptions to the sender verification settings.
Creating the Sender Verification Exception Table via the GUI
Configure the Sender Verification Exception Table via the Mail Policies > 
Exception Table page. Note that the exception table applies globally to all mail 
flow policies with “Use Exception Table” enabled.
Step 1
Click Add Domain Exception on the Mail Policies > Exception Table page. The 
Add Domain Exception page is displayed: