F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 Administrator's Manual page 281

Decreasing the level allows less spam to pass,
but more regular mails may be falsely identified
as spam. Increasing the level allows more spam
to pass, but a smaller number of regular e-mail
messages are falsely identified as spam.
For example, if the spam filtering level is set to 3,
more spam is filtered, but also more regular
mails may be falsely identified as spam. If the
spam filtering level is set to 7, more spam may
pass undetected, but a smaller number of
regular mails will be falsely identified as spam.
Action on Spam Specify actions to take with messages
Messages considered as spam, based on the spam filtering
level.
Quarantine - Place the message into the
quarantine folder.
Forward - Forward the message to the e-mail
address specified in the Forward Spam
Messages To E-mail Address setting.
Delete - Delete the message.
Add X-Header with Specify if a spam flag is added to the mail as the
Spam Flag X-Spam-Flag header in the following format:
where
Add X-Header with Specify if the summary of triggered hits is added
Summary to the mail as X-Spam-Status header in the
following format:
Administering F-Secure Spam Control
X-Spam-Flag:<flag>
<flag> is YES or NO,
X-Spam-Status: <flag>, hits=<scr>
required=<sfl> tests=<tests>
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