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Free Email Domain Checker: SPF, DKIM and DMARC

Find out if scammers can send email that looks like it came from your domain. Enter your domain to get a letter grade and a plain-English fix for each finding.

Runs in your browser. Lookups go straight from your browser to Cloudflare's public DNS (cloudflare-dns.com). Nothing is sent to Hawkcrest, saved, or stored.

What these records do

SPF lists the servers allowed to send mail for your domain. DKIM signs your mail so receivers can tell it wasn't changed. DMARC tells receivers what to do with mail that fails those checks, and sends you reports. Google, Yahoo and Microsoft now expect all three from bulk senders.

Hawkcrest Cyber offers remote cybersecurity, IT, and AI consulting, serving clients nationwide, based in Houston.