This URL has some pertinent info on your problem and
I'd like to add that my mail server is rejecting many messages from this
list because they contain the Email.Phishing.Pay-21 virus.
On Thu, 2007-12-20 at 16:49 +0100, Rene Borchers wrote:
Whatever it was, Clamassassin didn't like it, It was marking the initial
X-Virus-Report: Email.Phishing.Pay-21 FOUND
X-Virus-Checker-Version: clamassassin 1.2.4 with clamscan / ClamAV 0.91.2/4015/Mon Aug 20 23:42:06 2007