Cisco Cisco Email Security Appliance C160 Mode D'Emploi
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Chapter 5 Configuring the Gateway to Receive Email
Setting Policies Based on the HAT
As network owners can range dramatically in size, the appropriate entity to base
your mail flow policy on is the organization. The SenderBase Reputation Service
has a unique understanding of the source of the email down to the organization
level, which the Cisco IronPort appliance leverages to automatically apply
policies based on the organization. In the example above, if a user specified
“Level 3 Communications” as a sender group in the Host Access Table (HAT),
SenderBase will enforce policies based on the individual organizations controlled
by that network owner.
your mail flow policy on is the organization. The SenderBase Reputation Service
has a unique understanding of the source of the email down to the organization
level, which the Cisco IronPort appliance leverages to automatically apply
policies based on the organization. In the example above, if a user specified
“Level 3 Communications” as a sender group in the Host Access Table (HAT),
SenderBase will enforce policies based on the individual organizations controlled
by that network owner.
For example, in Table 3-7 above, if a user enters a limit of 10 recipients per hour
for Level 3, the Cisco IronPort appliance will allow up to 10 recipients per hour
for Macromedia Inc., Alloutdeals.com and Greatoffers.com (a total of 30
recipients per hour for the Level 3 network owner). The advantage of this
approach is that if one of these organizations begins spamming, the other
organizations controlled by Level 3 will not be impacted. Contrast this to the
example of “The Motley Fool” network owner. If a user sets rate limiting to 10
recipients per hour, the Motley Fool network owner will receive a total limit of 10
recipients per hour.
for Level 3, the Cisco IronPort appliance will allow up to 10 recipients per hour
for Macromedia Inc., Alloutdeals.com and Greatoffers.com (a total of 30
recipients per hour for the Level 3 network owner). The advantage of this
approach is that if one of these organizations begins spamming, the other
organizations controlled by Level 3 will not be impacted. Contrast this to the
example of “The Motley Fool” network owner. If a user sets rate limiting to 10
recipients per hour, the Motley Fool network owner will receive a total limit of 10
recipients per hour.
The Cisco IronPort Mail Flow Monitor feature is a way of defining the sender and
providing you with monitoring tools to create mail flow policy decisions about the
sender. To create mail flow policy decisions about a given sender, ask these
questions:
providing you with monitoring tools to create mail flow policy decisions about the
sender. To create mail flow policy decisions about a given sender, ask these
questions:
Table 5-8
Example of Network Owners and Organizations
Example Type
Network Owner
Organization
Network Service Provider
Level 3 Communications
Macromedia Inc.
AllOutDeals.com
GreatOffers.com
Email Service Provider
GE
GE Appliances
GE Capital
GE Mortgage
Commercial Sender
The Motley Fool
The Motley Fool