SPF DKIM DMARC Checker — Email Auth Lookup
Validate SPF, DKIM, and DMARC with detailed breakdown
How to Use This Tool
- Enter domain and DKIM selector from your mail host.
- TXT records are fetched and parsed.
- Validity, warnings, and raw records shown per type.
About This Tool
Email providers use SPF, DKIM, and DMARC to detect spoofing. This checker fetches TXT records, parses policies, and flags common misconfigurations before you send campaigns or migrate to Google Workspace or Microsoft 365.
Common use cases
- •Validate email auth before marketing sends
- •Fix deliverability after moving to Google or Microsoft mail
SPF explained
SPF lists which servers may send mail for your domain. Too many includes can hit the 10-DNS-lookup limit and break validation.
DKIM and selectors
DKIM signs messages with a public key in DNS. The selector is part of the record name — providers use values like google, selector1, or default.
DMARC policy
DMARC tells receivers what to do when SPF or DKIM fail — none, quarantine, or reject. Start with p=none while monitoring reports.
Frequently Asked Questions
Yes. VSPIC offers this SPF DKIM DMARC checker at no cost with no account required. Results load in real time.
We do not permanently store your queries on our servers. Some tools run entirely in your browser; others fetch public data for the request only.
Yes. Open the page in any modern phone or tablet browser. Results work on Wi‑Fi and mobile data.
Check your mail provider docs. Google often uses google; Microsoft 365 uses selector1 or selector2.
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