- DNS Check -
Check your SPF, DMARC, DKIM and MX records now
Check your SPF, DMARC, DKIM and MX records now
Analyze SPF, DKIM and DMARC instantly
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What is it? SPF is a DNS record that tells email servers which servers are authorized to send emails on behalf of your domain.
Why it matters: SPF helps prevent email spoofing and unauthorized use of your domain.
How to use: Add an SPF record to your DNS settings. A basic SPF record looks like: v=spf1 include:_spf.google.com ~all
Example: When someone receives an email from you@example.com, their email server checks the SPF record for example.com to verify the sender's server is authorized.
What is it? DKIM uses cryptographic signatures to verify that emails haven't been altered during delivery and that they actually come from your domain.
Why it matters: DKIM proves the authenticity and integrity of your emails, protecting against tampering and forgery.
How to use: Your email provider (Gmail, Office 365, etc.) typically generates DKIM keys for you. Add them to your DNS records.
Example: Each email sent from your domain is signed with a private key. Recipients can verify the signature using the public key in your DNS records.
What is it? DMARC is a policy that combines SPF and DKIM to create a comprehensive authentication strategy and tells servers what to do with failed emails.
Why it matters: DMARC gives you control over your domain's email reputation and helps prevent phishing attacks using your domain.
How to use: Create a DMARC policy in DNS. A basic policy: v=DMARC1; p=quarantine; rua=mailto:admin@example.com
Policies: