Just realised I didn't explain the term "Joe-jobbed" in the first paragraph.. here you go:
What's a "Joe Job"?
The act of faking a spam so that it appears to be from an innocent third party, in order to damage their reputation and possibly to trick their provider into revoking their Internet access. Named after Joes.com, which was victimized in this way by a spammer some years ago.
( taken from :
http://www.spamfaq.net/terminology.shtml )