DNS authentication diagnostic
DMARC record checker
Look up a domain's DMARC record and inspect the public policy used for authentication reporting and enforcement.
What is DMARC?
DMARC builds on SPF and DKIM and lets a domain publish instructions for messages that fail authentication alignment. Policies commonly include none, quarantine and reject.
What this checker reads
EmailValidly queries the public TXT record at _dmarc.yourdomain.com and reports whether a record beginning with v=DMARC1 is present.