The following attachment had content that we can't
prove to be harmless.  To avoid possible automatic
execution, we changed the content headers.
The original header was:

	Content-Type: application/octet-stream
	Content-Id: <395538087-3@snellwilcox.com>
	Content-Transfer-Encoding: base64
	Content-Disposition: attachment; filename="ntl.net_ndb"