> Received: from web13107.mail.yahoo.com (web13107.mail.yahoo.com
> [216.136.174.152])
> by drum.humph.com (8.11.3/8.11.3) with SMTP id f7REbjK04794
> for <...>; Mon, 27 Aug 2001 15:37:46 +0100 (BST)
This header is incomplete, there should be some more Received:-Lines.