This article provides instructions on how to confirm that the Safe Links protection feature is enabled and includes an overview of the Safe Links feature. Safe Links protection URLs begin with nam12.safelinks.protection.outlook.com .  There are several ways to tell if the links in an email message are protected by Safe Links or not.

As a function of the USNH Security Infrastructure, various tools are used to perform analysis and filtering of remote systems. This is done for the safety and security of our users. These filters are broken down into three categories: URL & DNS Filtering, Threat Intelligence Filtering, and Filtering based on active analysis.