Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Repeat steps 2-5 for each group in the listener’s HAT. For example, define the values for 
conservative approach. You can configure the values shown in 

 for a moderate or 

aggressive approach as well.

Remember that order matters when defining sender groups in a listener’s HAT. (The HAT is read 
from top to bottom for each host that attempts to connect to the listener. If a rule matches a 
connecting host, the action is taken for that connection immediately.) Cisco recommends 
maintaining the default order of the predefined sender groups in a listener’s HAT — that is, 
RELAYLIST (C10/100 customers only), followed by WHITELIST, BLACKLIST, 
SUSPECTLIST, and UNKNOWNLIST.

Click the Commit Changes button, add an optional comment if necessary, and then click Commit 
Changes to finish implementing reputation filtering in a listener’s HAT. 

Unless you regularly receive a large portion of spam, or you have set up “dummy” accounts to 
specifically receive spam for your organization, it may be difficult to immediately test the SBRS policies 
you have implemented. However, if you add entries for reputation filtering with SenderBase Reputation 
Scores into a listener’s HAT as indicated in 

, you will notice that a smaller percentage of 

inbound mail will be “unclassified.”