what is a DMARC?
DMARC stands for âDomain-based Message Authentication, Reporting & Conformance.â DMARC is protocol that uses SPF and DKIM to determine the authenticity of an email message.etâs break down a DMARC record. âv=DMARC1â This is the identifier that the receiving server looks for when it is scanning the DNS record for the domain it received the message from. If the domain does not have a txt record that begins with v=DMARC1, the receiving server will not run a DMARC check.