You can use the free MX Toolbox SuperTool to check your email records and compare your settings to the recommendations below: mxtoolbox.com/SuperTool.aspx.
So What Is Broken?
Email has been around for nearly 50 years, and despite its central role in business, it was never built with security in mind. Over time, different “patches” have been added to make email safer, but adoption and enforcement remain inconsistent across providers.
The rest of this article is available to members of the MTradecraft community.