The most commonly used technical term DMARC https://godmarc.com/dmarc is the abbreviation for Domain-based Message Authentication Reporting & Conformance. It is a modus operandi that makes the use of Sender Policy Framework (SPF)https://godmarc.com/spf and Domain Keys Identified Mail (DKIM)https://godmarc.com/dkim in order to identify the legitimacy of a message in the form of an email.