DMARC is an email authentication protocol that domain owners can use to enable policies so that receiving email servers know how to handle unauthenticated emails that have failed authentication checks from other protocols (like SPF and DKIM).
DMARC records are TXT records stored in the DNS. DMARC works by setting up a DMARC policy on a domain’s DNS records. This policy informs receiving email server on how to deal with emails that fail authentication checks.
The 3 DMARC policies are:
None - emails that fail authentication checks should still go through.
Quarantine - emails that fail authentication checks should be "quarantined," which usually results in emails going to spam.
Reject - emails that fail authentication checks should be blocked and not reach the inbox.
DMARC can also allow domain owners to receive reports on email authentication checks that pass or fail DKIM or SPF. DMARC reports can be fairly complicated.
EmailGuard has a built-in email parser that presents DMARC data in a user-friendly format. When you generate a DMARC record with us, we will add a custom "rua" tag that will send DMARC reports directly to us. We will take care of the rest and present you with valuable data.