Spam

I'm getting hammered by a lot of emails which have different subject lines and a different sender. Kmail displays it in plain text, does not say that it is a html message which can be viewed if you click here but there is html view available if scroll down to the description box, below the email. Clamav does not pick any virus. Spamassassin and bogofilter although set to learn, do not pick them up. (All uptodate). The message of the email starts with something on the lines of: "ListPrice: $550.00 OurPrice: $69.95 YouSave: $480.05 ( 87%) Availability: Available for INSTANT download!" followed by several references to microsoft type products, no links, so I assume you contact the sender (which suggests the email address is valid and not one from a compromised machine). I'm running suse 10.0 OSS on a standalone machine. Using Kmail. (Direct access via kmail to pop and stmp from my isp). Do I set a filter on body or message, containing the listprice etc quote from above, to mark as spam? Or could that compromise some valid emails where I have requested details on say holidays etc from somewhere else? Peter C