F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 6.62 -, Administrator'S Manual

Page: 91 / 397

CHAPTER 4 91
Using F-Secure Anti-Virus for Microsoft Exchange
Enable File Type
Recognition 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. Specify whether
you want to use Intelligent File Type Recognition
or not.
By default, Intelligent File Type Recognition is
disabled during the real-time processing.
Intelligent File Type Recognition strengthens the
security - you can block unsafe content that has
a safe filename extension (for example, a
Microsoft Word document using the ‘rtf’ filename
extension) and you do not accidentally block
safe content that has unsafe filename extension
(for example, a text file using the ‘doc’ filename
extension). Intelligent File Type Recognition can
degrade the system performance.
Action
Action on infected
attachments Specify whether infected attachments should be
disinfected or dropped.
Disinfect attachment - Try to disinfect the
infected attachment. If the disinfection
succeeds, the recipient receives the disinfected
file instead of the original one. If the disinfection
fails, the infected attachment is dropped, and it
is not delivered to the recipient.
Drop attachment - Do not disinfect or deliver
infected attachments. All infected attachments
are dropped.