What is DMARC? | UpGuard

This Markdown report is an explanatory overview of DMARC (Domain-based Message Authentication, Reporting & Conformance), detailing how it works with SPF and DKIM, the components of a DMARC DNS record (v, p, fo, rua, ruf, adkim, aspf, etc.), recommended deployment steps (monitor then enforce), its benefits and limitations (protects against email spoofing but not typosquatting or display-name abuse), common misunderstandings, a brief history, and how UpGuard’s vendor monitoring can help manage third‑party DMARC risk.