Defaults.Exposed › Stats › Email authentication (SPF, DKIM, DMARC)
How many SPF records exceed the 10-DNS-lookup limit?
As of July 28, 2026 · census snapshot 2026-07-28
As of July 28, 2026, 7,979 SPF records in the Defaults.Exposed census exceed RFC 7208's 10-DNS-lookup limit, which makes the record return a permanent error at many receivers — silently disabling SPF.
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Statistic current as of July 28, 2026. Recomputed from the live census each edition; the number on this page and the machine-readable twin always match. Please cite Defaults.Exposed and link this page.
Defaults.Exposed, "How many SPF records exceed the 10-DNS-lookup limit?" (as of July 28, 2026). https://defaults.exposed/stats/how-many-spf-records-break-the-10-lookup-limit
Permalink:https://defaults.exposed/stats/how-many-spf-records-break-the-10-lookup-limit · Machine-readable:spf-lookup-limit.json · Licence:open data
Methodology: how we grade the internet · Source data: defaults.exposed/data. Updated with each census edition.