At 06:14 AM 7/5/2007, Andrew Xiang wrote:
>how do I block this stock promotion spam?

You are running 3.1.7. I'm on 3.1.8, and I'm not up to date. I
believe 3.2.1 is the most current.

On my system, the first spam scored a 11.0:

X-Spam-Status: Yes, score=11.9 required=5.0 tests=BOTNET,MISSING_HB_SEP,
RCVD_IN_BL_SPAMCOP_NET,RCVD_IN_XBL autolearn=no version=3.1.8

I'd suggest running sa-update.