LIVE DNS

SPF record checker

Pull the live SPF TXT record and check lookup count against the RFC 7208 limit of 10.

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SPF basics

An SPF record starts with v=spf1 and lists mechanisms (include:, ip4:, a, mx, etc.) ending in a policy (-all, ~all, ?all).

Receivers count DNS lookups; more than 10 causes a permanent error.

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