Comcast should be watching as they win hands down at Dirty Mail. Yahoo close on their heels. See the stats here. "Sender Base" This information is easy for both these ISP's to see and ignoring this with their head in the sand will not make the problem go away. Though a number of their customers may be be spammers. The fact is the larger number are nothing more than Zombie boxes or people who fail to clean their machines.

What is really hard to understand if this site gives out the ip's of those most offending. Why is it that their service is simply not dropped as a course of action? Though many of yahoo's are tagged as bulk it seems this does not mean they are clean. People are making money off it while this is short term. This is a period where finger pointing might actually help. I applaud both MS efforts to help in a recent article posted all over the web. But lets get serious If senderbase.org can point to the right targets all that needs to be done is stop them.

Though the numbers are falling really it is important to stay vigilent and make e-mail something people look forward to once again. It is the way it was once though it is hard to remember that time. Here are the stats from the IronPort Site.