DMARC record generator

Set policy and reporting. The _dmarc TXT value updates live - then publish it in DNS.

1. Domain

Domain (apex)

Loads the existing _dmarc TXT into the fields below.

Policy (p=)

Subdomain policy (sp=, optional)

Aggregate reports (rua)

mailto: is added automatically.

Forensic reports (ruf, optional)

Percentage (pct)

DKIM alignment

SPF alignment

TXT value for _dmarc.<domain>:

v=DMARC1; p=none; adkim=r; aspf=r; pct=100;

BIND preview

_dmarc.<domain>. IN TXT "v=DMARC1; p=none; adkim=r; aspf=r; pct=100;"

Check DMARC

curl -sS 'https://tools.onesystems.ch/api/tools/mail-generate?kind=dmarc&domain=example.com&policy=none&rua=dmarc@example.com'