F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual page 118

118
Specify inbound, outbound and internal messages and attachments that
should be scanned for malicious code.
Disabling virus scanning disables grayware scanning and archive
processing as well.
Scan e-mail
messages for viruses
Heuristic Scanning
Proactive virus threat
detection
Enable or disable the virus scan. The virus scan
scans messages for viruses and other malicious
code.
Enable or disable the heuristic scan. The
heuristic scan analyzes files for suspicious code
behavior so that the product can detect unknown
malware.
By default, the heuristic scan is enabled for
inbound mails and disabled for outbound and
internal mails.
The heuristic scan may affect the product
performance and increase the risk of false
malware alarms.
Select whether Proactive Virus Threat Detection
is enabled or disabled.
Proactive virus threat detection can identify new
and unknown e-mail malware, including viruses
and worms.
When proactive virus threat detection is
enabled, the product analyzes e-mail messages
for possible security threats. All possibly harmful
messages are quarantined as unsafe.
Unsafe messages can be reprocessed
periodically, as antivirus updates may confirm
the unsafe message as safe or infected.
When proactive virus threat detection is
disabled, mails are only scanned by antivirus
engines.