This HTML message for some reason wasn't formatted by w3.el, before it 
was displayed, but instead displayed as the raw HTML tags.  I have a
setting of 
	(setq mm-discouraged-alternatives '("text/html" "text/richtext"))

However, this setting didn't stop a spam message from displaying as
(incredibly ugly) formatted HTML yesterday.

The offending message is attached.  Can anyone tell why this message
wasn't formatted before it was displayed?