Cisco Cisco Email Security Appliance C170 사용자 가이드
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C H A P T E R
13-1
User Guide for AsyncOS 9.8 for Cisco Email Security Appliances
13
Anti-Spam
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Overview of Anti-Spam Scanning
Anti-spam processes scan email for incoming (and outgoing) mail based on the mail policies that you
configure.
configure.
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One or more scanning engines scan messages through their filtering modules.
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Scanning engines assign a score to each message. The higher the score, the greater the likelihood
that the message is spam.
that the message is spam.
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Based on the score, each message is categorized as one of the following:
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Not spam
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Suspected spam
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Positively-identified spam
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An action is taken based on the result.
Actions taken on messages positively identified as spam, suspected to be spam, or identified as
unwanted marketing messages are not mutually exclusive; you can combine some or all of them
differently within different incoming or outgoing policies for different processing needs for groups
of users. You can also treat positively identified spam differently from suspected spam in the same
policy. For example, you may want to drop messages positively identified as spam, but quarantine
suspected spam messages.
unwanted marketing messages are not mutually exclusive; you can combine some or all of them
differently within different incoming or outgoing policies for different processing needs for groups
of users. You can also treat positively identified spam differently from suspected spam in the same
policy. For example, you may want to drop messages positively identified as spam, but quarantine
suspected spam messages.