F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 8.00 Administrator's Manual page 160

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Do not notify on these Specify attachments that do not generate
attachments notifications. When the product finds specified
file or file extension, no notification is sent.
Send alert to Specify whether the administrator is notified
administrator when the product strips an attachment. If you
enable the notification, specify the alert level of
the notification.
Configure the Alert Forwarding table to specify
where the alert is sent based on the severity
level. For more information, see "Alerts", 251.