If you look closely at the headers, you'll see that the first 'Received:' header is tagged as using HTTP (not SMTP) protocol.
Received: from localhost (webmail2-maint.its.uiowa.edu [128.255.56.154])
by day.its.uiowa.edu (8.12.9/8.12.9/ns-mx-1.14) with ESMTP id h6H21naK015350;
Wed, 16 Jul 2003 21:01:49 -0500
Received: from AC826956.ipt.aol.com (AC826956.ipt.aol.com [172.130.105.86])
by webmail2.its.uiowa.edu (IMP) with HTTP
for <[EMAIL PROTECTED]>; Wed, 16 Jul 2003 21:01:49 -0500
I realize that this is a rather unusual kind of header to find in a mail transaction, but it is a correct usage of the protocol.
It's not that unusual actually, we use Squirrelmail for webmail, and it does the same thing (HTTP header) for example:
Received: from webmail.igrin.co.nz (mail.igrin.co.nz [202.49.244.12]) by mail.igrin.co.nz (8.11.6p2/8.11.6) with SMTP id h6HNRQQ09080 for <[EMAIL PROTECTED]>; Fri, 18 Jul 2003 11:27:26 +1200 Received: from 202.49.244.7 (proxying for 202.49.247.225) (SquirrelMail authenticated user simon) by webmail.igrin.co.nz with HTTP; Fri, 18 Jul 2003 11:27:26 +1200 (NZST)
So hopefully this kind of thing is handled properly when SpamAssassin parses the headers....
Regards, Simon
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