This is a short extract from one of only 72 spam emails I've received today. It's getting funnier.
"When you initiate a call from your mobile phone, it communicates with the network by using a channel that's dedicated to voice calls. The unit is small, but somewhat thick. That's why Mdog is also compatible with a large number of mobile devices."
Are you still collecting spam domains that make it through most filters? I seem to be building a rather impressive list 🙂
I've resorted to using IP masks (usually x.x.x.* or even x.x.*). I use that list on my ncane.com site.