Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Chapter 5 Configuring the Gateway to Receive Email
Note
Be sure to include brackets in the query in the CLI. Brackets are not necessary
when specifying a DNS List query in the GUI. Use the
when specifying a DNS List query in the GUI. Use the
dnslistconfig
command
in the CLI to test a query, configure general settings for DNL queries, or flush the
current DNS list cache.
current DNS list cache.
Note that this mechanism can be used to identify “good” connections as well as
“bad” connections. For example, a query to query.bondedsender.org will match on
connecting hosts who have posted a financial bond with Cisco IronPort Systems’
Bonded Sender™ program to ensure the integrity of their email campaign. You
could modify the default WHITELIST sender group to query the Bonded Sender
program’s DNS servers (which lists these legitimate email senders who have
willingly posted bonds) and adjust the mail flow policy accordingly.
“bad” connections. For example, a query to query.bondedsender.org will match on
connecting hosts who have posted a financial bond with Cisco IronPort Systems’
Bonded Sender™ program to ensure the integrity of their email campaign. You
could modify the default WHITELIST sender group to query the Bonded Sender
program’s DNS servers (which lists these legitimate email senders who have
willingly posted bonds) and adjust the mail flow policy accordingly.
Predefined Mail Flow Policies for Public Listeners
are predefined as the following four mail flow policies
for each public listener you create:
•
$ACCEPTED
•
$BLOCKED
•
$THROTTLED
•
$TRUSTED
To access the predefined mail flow policies for a listener:
Step 1
Access the GUI. (See
.)
Step 2
Click Mail Policies > HAT Overview.
The Overview page is displayed. If listeners are configured, the Host Access
Table overview page defined for the first alphabetical listener is displayed.
Select the desired listener from the Listener list.
Table overview page defined for the first alphabetical listener is displayed.
Select the desired listener from the Listener list.