how to block IP address from a region GFI Mailessentials

With these RBLs, accuracy is a priority RBLs have an obvious interest in the reliability and quality of their work – if a list is not acceptably accurate and trustworthy, no one will use it. But well-run RBLs typically have well-defined criteria for listing an identifier as a threat as well as the process for removing it from the list. The lists vary in focus and in detection methods, and many lists specialize in one kind of threat. RBLs are created and maintained by commercial service providers, researchers, and public interest communities that operate the means to detect or receive notification of security threats. For example, some security systems ensure all traffic that arrives from a blocklisted IP address or all requests that match a blocklisted domain name or URL are rejected or quarantined. Security systems throughout the Internet examine traffic constantly to try to keep harmful material from reaching victims. RBLs are lists of domain names, Universal Resource Locators (URLs), and/or Internet Protocol (IP) addresses that have been investigated and subsequently identified as posing security threats. RBLs are built into the Internet services we all use every day to keep harmful material out of your email inbox, warn you away from phishing attempts, keep viruses off your organization’s network, and more. What many Internet users don’t know is that the vast majority of users are being protected all the time by Reputation Block Lists (RBLs).

How to block IP address from a region GFI Mailessentials