ISPs are one of the most vocal opponents of SPAM because it eats up their bandwidth. Yet, a lot of ISPs continue to allow their customers to send email out to the world on TCP port 25 with no restrictions. Huh?
I’m of the opinion that the ISPs need to take more responsibility for the email that is leaving their networks. If you are an ISP and you have SPAM zombie PCs on your network spewing thousands of outbound SPAM messages per day, then you need to shut them down. Continue reading