Trend Micro InterScan M Series, Administrator'S Manual

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Trend Micro™ InterScan™ Gateway Security Appliance M-Series Administrator’s Guide
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message text itself. The content filter helps to monitor inbound and outbound mes-
sages to check for the existence of harassing, offensive, or otherwise objectionable
message content. Examples of what the content filter can identify include:
• Sexually harassing language
• Racist language
• Spam embedded in the body of an email message
The content filtering function in InterScan Gateway Security Appliance evaluates
inbound and outbound messages based on user-defined rules. Each rule contains a list
of keywords and phrases. Content filtering evaluates the message size, header and
body content, and attachment name. When content filtering finds a word that matches
a keyword in one of the keyword lists it takes the action specified by the
administrator in the content filtering action screen. InterScan Gateway Security
Appliance can send notifications whenever it takes action in response to undesirable
content.
InterScan Gateway Security Appliance applies the content filtering rules to email in
the same order as displayed in the Content Filtering screen of the Web console. The
InterScan Gateway Security Appliance scans each email message. If a message
triggers one or more filtering violations, InterScan Gateway Security Appliance takes
the action that the administrator has defined in the action section of the Content
Filtering screen.
Anti-Spam
Spam email is a mounting problem for businesses, consuming network, computer and
human resources by its sheer volume. To address this problem, the anti-spam function
in InterScan Gateway Security Appliance helps reduce the occurrence of spam email.
Trend Micro anti-spam, using a spam engine, Approved and Blocked Senders lists,
spam pattern file, and Email Reputation Services works in conjunction with the Inter-
Scan Gateway Security Appliance to scan for and filter spam.
If spam logging is enabled, InterScan Gateway Security Appliance writes spam
detections to the Anti-Spam: Content Scanning log or the Anti-Spam: Email
Reputation Services log. You can export the contents of the Anti-Spam logs for
inclusion in reports.