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Free SPF lookup

Find the SPF policy for a domain and show the mechanisms on one line.

Lookups use Cloudflare 1.1.1.1 from your browser.

Results appear here.

A broken SPF sends client mail to spamMonitor the TXT record and the mail host. Tenium alerts when either changes.

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One SPF record

SPF is a TXT record that starts with v=spf1. A domain must have only one. Two SPF records make the policy fail, and receivers treat that as if there were no policy.

The ten-lookup limit

include, a, mx, ptr and exists each count toward a limit of ten DNS lookups. Nested includes from Google, Microsoft and a marketing tool are a common way to cross it, after which the whole policy returns a permanent error.

Related checks

MX lookup · DMARC lookup · DKIM lookup · TXT lookup · DNS monitoring

Command-line equivalent

dig +short example.com TXT

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