In TalkMail dated 31 Mar 04, and now the newest dated 29 Jul 04 and 13 Aug 04, the SMTP headers are formatted incorrectly so that the message is not properly detected as HTML. There are extra line breaks in the headers, and SMTP specification notes that the first blank line denotes the end of the headers defining the message. Thus, the header line for marking the message as HTML doesn't get processed. The headers I get:

** Properly marked as headers **

Microsoft Mail Internet Headers Version 2.0
Received: from www.flyertalk.com ([64.78.185.92]) by address.net with Microsoft SMTPSVC(5.0.2195.6713);
Fri, 13 Aug 2004 19:27:44 -0400
Received: (qmail 17267 invoked by uid 501); 13 Aug 2004 21:51:37 -0000
Message-ID: <[email protected]>
To: [email protected]
Subject: TalkMail from FlyerTalk.com
MIME-Version: 1.0

** Marked as the body of the message **

Content-Transfer-Encoding: 8bit

Content-Type: text/html

From: FlyerTalk <[email protected]>
Reply-To: FlyerTalk <[email protected]>
Date: Fri, 13 Aug 2004 15:51:37 -0600

Return-Path: root@<a href="http://www.flyertalk.c...ertalk.com</a>
X-OriginalArrivalTime: 13 Aug 2004 23:27:44.0117 (UTC) FILETIME=[226D3250:01C4818D]

It's been correct the other times (though the HTML formatting is off a little bit in the TABLE formatting for the header image, but that's a different issue) so I'm guessing this is something sporadic with the mail server that sends the messages.