Cisco Cisco Email Security Appliance C170 사용자 가이드

The Cisco IronPort appliance can query the Cisco IronPort SenderBase 
Reputation Service to determine a sender’s reputation score (SBRS). The SBRS 
is a numeric value assigned to an IP address, domain, or organization based on 
information from the SenderBase Reputation Service. The scale of the score 
ranges from -10.0 to +10.0, as described in 

.

Using the SBRS, you configure the Cisco IronPort appliance to apply mail flow 
policies to senders based on their trustworthiness. For example, all senders with 
a score less than -7.5 could be rejected. This is most easily accomplished via the 
GUI; see 

. However, if you are modifying an exported HAT in a text file, the 

syntax for including SenderBase Reputation Scores is described in 

. 

See “Customizing Listeners” in the Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide. 

Network owners added to a HAT via the GUI use the syntax 

SBO:

n, where n is the 

network owner’s unique identification number in the SenderBase Reputation 
Service.

Most likely to be a source of spam

Neutral, or not enough information to make a recommendation

Most likely to be a trustworthy sender

No data available for this sender (typically a source of spam)

SBRS[

:

]

SenderBase Reputation Score. Senders are identified by querying the 
SenderBase Reputation Service, and the scores are defined between the 
ranges. 

SBRS[non
e]

Specify no SBRS (very new domains may not have SenderBase 
Reputation Scores yet).