Yahoo will roll out a new antispam specification to make it easier for service providers to confidently discard suspicious email messages. The DMARC (Domain-based Message Authentication, Reporting & Conformance) allows email senders to tell receiving services if they are using two other technologies to weed out spam. The messages could be phishing attempts, or ploys intended to trick recipients into revealing sensitive information or encouraging them to click on malicious links leading to bogus websites. The new specification is supported by companies including Google, Facebook, Microsoft and others.”]
Source: https://www.csoonline.com/article/2131806/yahoo-implements-latest-antispam-defense.html