Reputation Feed is our free reputation monitoring service! We use various methods and more than 600 data sources to create lists of IP addresses that are suspected of being untrustworthy. These IP addresses may include compromised machines (“zombies”) that send out spam, open proxies that allow any e-mail to pass through them, systems that are observed sending spam on the Internet and systems that may unknowingly host phishing sites, etc. With our free service, you can rest assured knowing that we will notify you immediately when we detect your IP in any of these lists. And you can take action before it impacts your company’s reputation!