I know this is old news, but doing this got HMS a SOS (shoot on sight) listing in the Abusive Hosts Blocking List. There is a Usenet post archived
here. I have just done a lookup on 67.132.206.0/24, and as of the time of this node, it's still listed. Poll suggestion - which spam blocklists do you use? AHBL's among mine.
Regards,
John Davies