Email, What is DMARC

What do I need to know about DMARC?

Domain-based Message Authentication, Reporting and Conformance - verifies an email actually came from the domain it claims to be sent from. It verifies two things:

  •         SPF (Sender Policy Framework) - verifies the server sending the email is authorized to send email for that domain.
  •         DKIM signature - verifies the content of the message was not manipulated during transit using encryption key verification.
If you are forwarding your email, you will lose email if a domain has a DMARC=reject policy. In addition to the Federal Agencies, many large corporations also implement a dmarc=reject policy.
Some examples include PayPal, Linked-In, Apple, Amazon, etc.
A full list can be found at:

KeywordsDomain-based Message Authentication, spf, dkim   Doc ID86784
OwnerRyan S.GroupUniversity of Illinois Technology Services
Created2018-10-16 08:28 CSTUpdated2023-01-23 10:13 CST
SitesUniversity of Illinois Technology Services
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