F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 Administrator's Manual page 287

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:
where
Modify spam Specify if the product modifies the subject of
message subject mail messages considered as spam.
Add this text to spam Specify the text that is added in the beginning of
message subject the subject of messages considered as spam.
By default, the text is: *** SPAM ***.
Safe/Blocked senders and recipients
List of safe senders Specify safe senders. Messages originating from
the specified addresses are never treated as
spam.
List of safe recipients Specify safe recipients. Messages sent to the
specified addresses are never treated as spam.
Administering F-Secure Spam Control
X-Spam-Status: <flag>, hits=<scr>
required=<sfl> tests=<tests>
<flag> is Yes or No,
<scr> is the spam confidence rating
returned by the spam scanner,
<sfl> is the current spam filtering level,
<tests> is the comma-separated list of
tests run against the mail.
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