F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 Administrator's Manual page 96

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Spam Control
You can use '?' character in a keyword to match any character in that
position in the keyword and '*' to match any number of characters.
Keyword examples:
example
another example
co?p?rate Matches any message text or subject that
another*example Matches any message text or subject that
To represent '?' or '*' characters themselves in keywords, use '\?' and '\*'
sequences correspondingly. To represent '\' character, use '\\'.
For example, to match the '*** SPAM ***' string, enter '\*\*\* spam \*\*\*'.
To change settings used when inbound messages are scanned for spam,
see "Administering F-Secure Spam
You can configure Spam Control settings for inbound messages,
and only if you have F-Secure Spam Control installed.
The threat detection engine of F-Secure Anti-Virus for Microsoft
Exchange can identify spam and virus patterns from the message
envelope, headers and body during the first minutes of the new spam or
virus outbreak.
Matches any message text or subject that
contains the word 'example'.
Matches any message text or subject that
contains the 'another example' text. Words
'another' and 'example' have to be separated
with exactly one space character.
contains - for example - words 'corporate' or
'cooperate'.
contains words 'another' and 'example'
separated with any number of characters. For
example, 'another example' or 'another keyword
example'.
Control", 278.