Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

HAT parameters are combined with an access rule to create a mail flow policy 
(see 

). 

When you group together different HAT parameters and assign a name to them, 
you are defining a mail flow policy that can be applied to groups of senders. 

A sender group is simply a list of senders gathered together for the purposes of 
handling email from those senders in the same way (that is, applying a mail flow 
policy to a group of senders). A sender group is a list of senders identified by:

IP address

IP range

Specific host or domain name

SenderBase Reputation Service “organization” classification

SenderBase Reputation Score (SBRS) range (or lack of score)

DNS List query response

See 

 for the syntax of defining remote hosts (sender entries) that make 

up sender groups. These sender entries are separated by commas in a listener’s 
HAT. You assign a name for sender groups, as well as mail flow policies. 

Together, sender groups and mail flow policies are defined in a listener’s HAT. By 
default, your Cisco IronPort appliance ships with the predefined mail flow 
policies and sender groups described in 

. 

In 

 you will use the predefined sender 

groups and mail flow policies to quickly and powerfully classify the mail flowing 
through your gateway, enabling real-time changes to a listener’s HAT. 

Accept Untagged Bounces

NO

Envelope Sender DNS Verification

OFF

Use Exception Table

OFF