F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual page 143

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.
Targets
Process Mailboxes
Administration with Web Console
Specify mailboxes that are filtered for
attachments.
Do not process mailboxes - Do not filter any
mailboxes for attachments.
Process all mailboxes - Filter attachments in all
mailboxes.
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