PUBLIC DNS
Look up the DMARC policy.
Read _dmarc TXT and check for a single policy with a valid p= value.
DMARC tells receivers how to evaluate SPF and DKIM alignment and where to send reports.
DMARC does not guarantee inbox placement and cannot see private report mailboxes. For a scored MailerZ readiness scan across MX, leftover routes, SPF, DKIM, and DMARC, use Troubleshooting.
Open the full DNS diagnostic · Simulate a route in the Email Routing Lab
Cited standard: RFC 7489
DMARC tells receivers how to evaluate SPF and DKIM alignment and where to send reports.