Free DMARC Checker
DMARC record checker
Lookup, validate and enforce your DMARC record securely to p=reject.Scan your email’s DMARC compliance

DMARC record generator
Email doesn’t inherit authentication. Without DMARC enforcement, any SMTP server can use your business domain name to send out emails.Without DMARC, hackers and other malicious users can impersonate messages, making them appear to come from your organization or domain. Turning off DMARC puts your users and your contacts at risk for spam, spoofing, and phishing.
Microsoft
DMARC ensures the destination email systems trust messages sent from your domain. Using DMARC with SPF and DKIM gives organizations more protection against spoofing and phishing email. DMARC helps receiving mail systems decide what to do with messages from your domain that fail SPF or DKIM checks.