Here is a link from ZDNet warning of a spam increase. I can't wait to see SA smat it down.
Hmm.. so zombies are going to start using the legit mailserver instead of acting as a direct delivery... Hmm.. Well, we should see the DUL RBL hits drop off pretty fast. Won't affect SURBL hits though.
The only problem I see with the tactic is the ISP itself is likely to deal with the infected users pretty quickly, instead of dragging their feet, since the spam will now be bogging down their servers, instead of bypassing them.
