Freedom9 freeGuard 100, Command Line Interface Manual

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freeGuard 100 CLI User Manual
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emailbwl: Email address list
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mheader: MIME headers
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bword: Banned words
The freeGuard 100 compares the MIME header key-value pair of incoming email to the list pair in
sequence. If a match is found, the corresponding action is taken. If no match is found, the email is
passed on to the next spam filter.
MIME (Multipurpose Internet Mail Extensions) headers are added to email to describe content type
and content encoding, such as the type of text in the email body or the program that generated the
email. Some examples of MIME headers include:
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X-mailer: outgluck
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X-Distribution: bulk
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Content_Type: text/html
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Content_Type: image/jpg
The first part of the MIME header is called the header key, or just header. The second part is called the
value. Spammers often insert comments into header values or leave them blank. These malformed
headers can fool some spam and virus filters.
You can use the MIME headers list to mark email from certain bulk mail programs or with certain types
of content that are common in spam messages. You can choose to mark the email as spam or clear
for each header you configure.
You can use Perl regular expressions or wildcards to add MIME header patterns to the list. See “Using
Perl regular expressions” .
Note: MIME header entries are case sensitive.
Command syntax pattern
config spamfilter mheader
edit <mime_integer>
set <keyword> <variable>
end
config spamfilter mheader
edit <mime_integer>
unset <keyword>
end
config spamfilter mheader