I thought it was mostly control servers....I doubt any 'botnet master' would hardcode an IP address of a server without some sort of backup using some domains that they can always change the DNS on. They update that and the bots will then start connecting to the new 'control servers' and thus spam would come from them. Also did the spam really 'stop' or were they just not able to now get updates from their control servers...those infected I imagine are still sending the spam.... -r -----Original Message----- From: Mike Walter [mailto:mwalter@3z.net] Sent: Friday, December 05, 2008 4:03 PM To: Revolver Onslaught; nanog Subject: RE: McColo and SPAM We have not seen any decrease. In the last 24 hours we have seen 3.5 million messages blocked. -Mike -----Original Message----- From: Revolver Onslaught [mailto:revolver.onslaught@gmail.com] Sent: Friday, December 05, 2008 2:14 PM To: nanog Subject: McColo and SPAM Hello, Since McColo closed, we noticed the spam was far more intensive than before. However, it seems the amount of spam is similar than than before. Do you feel the same ? Many thanks, RO