X-Mailer: domain

Hi,

I've started seeing spam email containing an X-Mailer header which is
the domain name of the From header. Eg:

From: "Compare and Cover Life" <info@...>
X-Mailer: webguide103.com

How would I construct a spamassassin rule to check for this?

--
Mike Cardwell - IT Consultant and LAMP developer
Cardwell IT Ltd. (UK Reg'd Company #06920226) http://cardwellit.com/