DMARC anti-spam system

[Randy5]

A group of large companies has teamed up for the past year to create DMARC, short for the Domain-based Message Authentication, Reporting and Conformance system. It's a verification system to help customers avoid spam. Among the companies involved are Bank of America, PayPal, Facebook, Google and Microsoft.

[greenmatter]

Well this would be great as long as it doesnt restrict the legitimate user.