Cisco Cisco Email Security Appliance X1070 Mode D'Emploi
Chapter 7 Reputation Filtering
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
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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:
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:
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.
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.
Using the SBRS, you configure the IronPort 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 “SenderBase
Reputation Rule” and “Bypass Anti-Spam System Action” in the “Using Message
Filters to Enforce Email Policies” chapter in the Cisco IronPort AsyncOS for
Email Advanced Configuration Guide.)
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 “SenderBase
Reputation Rule” and “Bypass Anti-Spam System Action” in the “Using Message
Filters to Enforce Email Policies” chapter in the Cisco IronPort AsyncOS for
Email Advanced Configuration Guide.)
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