User manual

The actions defined here are: place a copy of the message into Quarantine, notify the
Administrator, deliver the original message to its recipient, adding a subject extension to
notify the recipient of the spam probability of this message (e.g. Spam probability = 75).
The higher this value, the greater the likelihood that this is not a high-priority message.
The Spam probability Medium is for those mails that may or may not be spam. The low
values of this setting mean that a medium spam probability is assumed if a few criteria
suggesting a great spam likelihood or many criteria suggesting a small likelihood of spam
were found. We recommend to store these e-mails in a separate Quarantine (Spam
Middle) and to let the recipients decide what to do with them.
Tip: Summary reports can be used to notify users of quarantined spam mails
addressed to them. You can also use the Microsoft SCL value to forward the
e-mails directly to the users' junk folder through the Exchange Store (see next
section). If you have a Subject extension defined to display the spam probability
value, users can set up their own Outlook message rules to deal with the mail.
Write spam result in Exchange SCL field
As of Service Pack 1 for Exchange 2003 and Outlook 2003, Microsoft supplies a spam
filter. This Intelligent Message Filter (IMF) determines a spam probability – the so-called
Spam Confidence Level (SCL) – from -1 to 9. The higher the spam probability, the larger
the SCL. An SCL of 0 means that the message is probably not spam -1 is used for
unfiltered mail, for example internal mail from senders in the same Exchange
organization. The Exchange SCL value trigger specified actions, such as automatically
Avira AntiVir Exchange 7
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