Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
5-47
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
OL-25136-01
Chapter 5 Configuring the Gateway to Receive Email
Figure 5-33
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.”
Step 7
Submit and commit your changes.
And for the last step, create the sender verification exception table to list exceptions to the sender
verification settings.
verification settings.
Creating the Sender Verification Exception Table via the GUI
Step 1
Select Mail Policies > Exception Table.
Note
The exception table applies globally to all mail flow policies with “Use Exception Table”
enabled.
enabled.
Step 2
Click Add Domain Exception on the Mail Policies > Exception Table page. The Add Domain Exception
page is displayed:
page is displayed:
Figure 5-34
Adding Addresses to the Exception Table
Step 3
Enter an email address. You can enter a specific address (pres@whitehouse.gov), a name (user@), a
domain (@example.com or @.example.com), or an address with a bracketed IP address
(user@[192.168.23.1]).
domain (@example.com or @.example.com), or an address with a bracketed IP address
(user@[192.168.23.1]).
Step 4
Specify whether to allow or reject messages from the address. When rejecting mail, you can also specify
an SMTP code and custom response.
an SMTP code and custom response.