Content filters define how ScanMail filters message contents based on explicit rules
defined by administrators.
Content security can take many forms, including checking for leaked corporate secrets,
offensive or inappropriate language, or even questionable contact with competitor
corporations or hostile countries.
The Content Filter tab allows you to define general and advanced rules.
Create general content filter rules to:
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Quickly create a rule (without first creating an Expression).
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Filter messages based on the text appearing in the Subject.
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Filter messages based on the text appearing in the Body (all or some keywords).
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Filter messages based on file attachment name.
Create advanced content filter rules to:
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Create complex filters, including one or more Expressions.
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Create filters using multiple Expressions, linked via the OR operator.
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Scan the message body only.
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Scan attachment content only.
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Focus your search on a particular message header field: Subject, To, CC, From.
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Set up a match threshold for the occurrence of a particular attachment (for example, do not block a message unless X matches of the specified attachment has occurred. This is useful, for example, for mass mailing threats that tend to propagate widely and may include attachments of a common name).
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Include additional values for
.OCCUR. -
Include additional values for
.NEAR.