I stand by my assertion — the idea that an IP address can have "reputation" is fundamentally flawed. The SMTP example that you cite is actually a good one: the

I stand by my assertion — the idea that an IP address can have "reputation" is fundamentally flawed. The SMTP example that you cite is actually a good one: the whole reason why we started assigning "reputation" to IP addresses is because we could not be bothered to improve SMTP over the last 40 years or so and it still assumes we live in a world of trust. CloudFlare (and everyone else for that matter) should stop assigning "reputation" to IP addresses. An IP address is a network location, think of it as a temporary storage box which could be occupied by anyone and anything. We should move beyond coloring boxes.