F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual page 173

Choose how mailboxes and public folders are scanned for viruses during
the scheduled operation.
Scan messages for
viruses
Heuristic Scanning
Targets
Scan these
attachments
Exclude these
attachments
Actions
Try to disinfect
Administration with Web Console
Enable or disable the virus scan. The virus scan
scans messages for viruses and other malicious
code.
If you disable the virus scan, grayware scanning
and archive processing are disabled as well.
Enable or disable the heuristic scanning. The
heuristic scanning analyzes files for suspicious
code behavior so that the product can detect
unknown malware.
Heuristic scanning may affect the product
performance and increase the risk of false
malware alarms.
Specify attachments that are scanned for
viruses. For more information, see
217.
Specify attachments that are not scanned.
Leave the list empty if you do not want to
exclude any attachments from the scanning.
Specify whether the product should try to
disinfect an infected attachment before
processing it. If the disinfection succeeds, the
product does not process the attachment further.
Disinfection may affect the product performance.
Infected files inside archives are not disinfected
even when the setting is enabled.
CHAPTER 3
"Match Lists",
173