Domain-based Message Authentication, Reporting and Conformance (DMARC)

wikipedia:DMARC (2015)

• DMARC record: _dmarc

dig -t TXT _dmarc.google.com
.../...
_dmarc.google.com.      223     IN      TXT     "v=DMARC1; p=reject; rua=mailto:[email protected]"
.../...

Options:

• p=none, p=reject, p=quarantine

• v is the version
• p is the policy (see below)
• sp the subdomain policy
• pct>/code>is the percent of "bad" email on which to apply the policy
• rua is the URI to send aggregate reports

Related terms

• dig: dig -t MX
• Read StackOverflow question about DMARC: https://stackoverflow.com/questions/tagged/dmarc?tab=Votes
• Read: https://support.google.com/a/answer/2466563?hl=en
• Recurly, https://support.recurly.com/hc/en-us/articles/360034122091-How-do-I-configure-SPF-DKIM-or-DMARC-records-

See also

• dig, host, nslookup, delv, axfr, resolvectl query, dig -t NS, dig -t MX, dig -t TXT, dig -t SOA
• DMARC, _dmarc, Dmarcian
• Mail, SPF, DMARC, MX, DKIM, ARC, Email Authentication, Email spoofing, Sender ID
• Mail, SMTP, submission, SMTPS, POP, IMAP, StartTLS, Exim, Postfix, IRedMail, Fail2ban, Dovecot, Roundcube, DKIM, SPF, DMARC, MX, ssmtp, mailx, Swaks