F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual - page 46
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File Type Recognition
Select whether you want to use Intelligent File Type Recognition or not.
Trojans and other malicious code can disguise themselves with filename
extensions which are usually considered safe to use. Intelligent File Type
Recognition can recognize the real file type of the message attachment
and use that while the attachment is processed.
Blocked Senders
Specify blocked senders. Messages originating
from the specified addresses are always treated
as spam.
Safe Recipients
Specify safe recipients. Messages sent to the
specified addresses are never treated as spam.
Blocked Recipients
Specify blocked recipients. Messages sent to
the specified addresses are always treated as
spam.
The product checks the sender address from the
SMTP message envelope, not from the
message headers.
Max Message Size
Specify the maximum size (in kilobytes) of
messages to be scanned for spam. If the size of
the message exceeds the maximum size, the
message is not filtered for spam.
Since all spam messages are relatively small in
size, it is recommended to use the default value.
Using Intelligent File Type Recognition strengthens the security, but
can degrade the system performance.