Cisco Cisco Email Security Appliance C680 User Guide
Chapter 8 Anti-Spam
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Click Yes and define an alternate address.
For example, you could route messages identified as spam to an administrator’s
mailbox for subsequent examination. In the case of a multi-recipient message,
only a single copy is sent to the alternate recipient.
mailbox for subsequent examination. In the case of a multi-recipient message,
only a single copy is sent to the alternate recipient.
Figure 8-11
IronPort Anti-Spam Settings for a Mail Policy
Positive and Suspect Spam Threshold
When evaluating messages for spam, IronPort Anti-Spam and IronPort Intelligent
Multi-Scan apply thousands of rules in order to arrive at an overall spam score for
the message. To maintain its high accuracy, the both anti-spam solutions by
default set this threshold value quite high. Messages returning a score between 90
and 100 are considered to be positively identified as spam. You can change the
positively identified spam threshold to a value between 75 (most aggressive) and
Multi-Scan apply thousands of rules in order to arrive at an overall spam score for
the message. To maintain its high accuracy, the both anti-spam solutions by
default set this threshold value quite high. Messages returning a score between 90
and 100 are considered to be positively identified as spam. You can change the
positively identified spam threshold to a value between 75 (most aggressive) and