Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
6-2
Cisco AsyncOS 8.0.1 for Email User Guide
Chapter 6 Reputation Filtering
SenderBase Reputation Service
•
SenderBase Reputation Score (SBRS)
The SenderBase Reputation Score (SBRS) is a numeric value assigned to an IP address based on
information from the SenderBase Reputation Service. The SenderBase Reputation Service aggregates
data from over 25 public blacklists and open proxy lists, and combines this data with global data from
SenderBase to assign a score from -10.0 to +10.0, as follows:
information from the SenderBase Reputation Service. The SenderBase Reputation Service aggregates
data from over 25 public blacklists and open proxy lists, and combines this data with global data from
SenderBase to assign a score from -10.0 to +10.0, as follows:
The lower (more negative) the score, the more likely that a message is spam. A score of -10.0 means that
this message is “guaranteed” to be spam, while a score of 10.0 means that the message is “guaranteed”
to be legitimate.
this message is “guaranteed” to be spam, while a score of 10.0 means that the message is “guaranteed”
to be legitimate.
Using the SBRS, you configure the Cisco appliance to apply mail flow policies to senders based on their
trustworthiness. (You can also create message filters to specify “thresholds” for SenderBase Reputation
Scores to further act upon messages processed by the system. For more information, refer to
“
trustworthiness. (You can also create message filters to specify “thresholds” for SenderBase Reputation
Scores to further act upon messages processed by the system. For more information, refer to
“
.”)
Score
Meaning
-10.0
Most likely to be a source of spam
0
Neutral, or not enough information to make a recommendation
+10.0
Most likely to be a trustworthy sender