F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual - page 50
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2.2.3
Storage Protection
Edit general Storage Protection settings to configure how mailboxes and
public folders are scanned in the Exchange Store with real-time, manual
and scheduled scanning.
Real-Time Scanning
The real-time scanning can automatically scan messages that have been
created or received.
General
Specify which messages you want to scan during the real-time scanning.
Attachment Filtering
Attachment filtering can remove attachments from messages in the
Microsoft Exchange Storage based on the file name or the file extension
of the attachment.
Scan Only Messages
Created Within
Specify which messages are scanned with the
real-time scanning, for example; Last hour, Last
day, Last week. Messages that have been
created before the specified time are not
scanned.
This setting works only with Microsoft Exchange
Server 2007 or 2010.
Scan Timeout
Specify how long to wait for the real-time scan
result. After the specified time, the client that
tries to access the scanned message gets the
"virus scanning in progress" notificaion.
Process Mailboxes
Specify mailboxes that are filtered for
attachments.
Disabled - Do not filter any mailboxes for
attachments.