F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 - Administrator's Manual - page 111
CHAPTER 5
111
Centrally Managed Administration
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.
Advanced
Specify how many levels deep to scan in nested e-mail messages. A
nested e-mail message is a message that includes one or more e-mail
messages as attachments. If zero (0) is specified, the maximum nesting
level is not limited.
Quarantine Dropped
Grayware
Specify whether grayware attachments are
quarantined.
Do Not Quarantine
This Grayware
Specify grayware that are never placed in the
quarantine. For more information, see “
Replacement Text
Template
Specify the template for the text that replaces
the grayware attachment when the grayware
attachment is removed from the message. For
more information, see “
Using Intelligent File Type Recognition strengthens the security, but
can degrade the system performance.
It is not recommended to set the maximum nesting level to unlimited
as this will make the product more vulnerable to DoS
(Denial-of-Service) attacks.