🔐 SPF / DKIM / DMARC Validator

Validate your domain's email authentication records. Catch misconfigurations that hurt deliverability.

Enter Your Domain

We'll check SPF, DKIM, DMARC, MX, and BIMI records for your domain.

Understanding DNS Records

SPF (Sender Policy Framework)

SPF specifies which servers are allowed to send email on behalf of your domain. A missing or incorrect SPF record causes emails to fail authentication checks.

v=spf1 include:_spf.google.com ~all

DKIM (DomainKeys Identified Mail)

DKIM adds a cryptographic signature to your emails, allowing receiving servers to verify emails haven't been tampered with in transit.

v=DKIM1; k=rsa; p=MIGfMA0GCS...

DMARC

DMARC tells receiving servers what to do if SPF/DKIM checks fail. It also enables reporting so you know who's sending email on your behalf.

v=DMARC1; p=reject; rua=mailto:dmarc@example.com

MX Records

MX records define which mail servers receive email for your domain. Incorrect MX records result in lost emails.

10 mail.example.com