SPF lookup
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Honest note: Unlike PDF/image tools, this page asks our server to query public DNS for the domain you enter. We do not need file uploads. Do not use this to probe systems you are not authorized to check.
Check SPF records for domains you manage
Sender Policy Framework (SPF) publishes which mail servers may send for your domain. This tool fetches TXT records, finds v=spf1, lists mechanisms, and gives basic guidance (e.g. missing all).
Pair with DKIM and DMARC for a fuller mail-auth picture.
Frequently asked questions
Is this private like the PDF tools?
No. DNS lookups require a server-side resolver. Your queried domain name is processed by our lookup API.
What does SPF do?
It lists authorized sending hosts; receivers can fail mail that does not match.
Why no SPF found?
The domain may not publish v=spf1, or TXT is on a different host.
Is this a security audit?
Basic guidance only — not a full email deliverability audit.