Sender Authentication: What Is It, and How Can It Help You?

IF: How does sender authentication prevent false positives?
Guerra: When you consider a prospective employee you will likely run a background check on them to get some idea of their repuation. Before you can do that, you have to verify they are who they say they are by examining some form of identification such as a driver’s license. In the world of e-mail, sender authentication is the driver’s license, and a reputation system is the background check. Taken together, these two technologies can allow ISPs to make better decisions when they decide to block or accept messages.