EmailSheriff Blog — email deliverability guides

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Jul 28, 2026

SPF PermError: too many DNS lookups.

Your SPF record gets ten DNS lookups. Not ten entries - ten queries, counted across every vendor you delegate to. Cross it and the record does not degrade, it stops returning a result at all. What actually counts, why a record you never touched breaks on someone else’s schedule, and five fixes ranked by what we would genuinely recommend.

Email Authentication
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