--- title: "research - Articles & Guides | AutoSPF" description: "All AutoSPF articles about research. Expert guides on research for email authentication and deliverability." image: "https://autospf.com/images/og-default.png" canonical: "https://autospf.com/tags/research/" --- Tag # research 4 articles [ Advanced The SPF Lookup Ceiling: Why Publishing a Record Is Not Enough Learn why SPF records exceed the 10-DNS-lookup limit, explore key statistics, and discover how to manage sender dependencies and prevent authentication errors. Nov 4, 2026 ](/blog/spf-lookup-limit-why-publishing-a-record-is-not-enough/)[ Intermediate SPF Is Not a Checkbox: What Published Records Really Protect Explore what SPF records really protect, including syntax errors, lookup limits, sender authorization, external dependencies, and DMARC enforcement. Nov 3, 2026 ](/blog/spf-is-not-a-checkbox-what-published-records-really-protect/)[ Intermediate Why SPF Compliance Does Not Guarantee the Inbox Discover why SPF compliance alone cannot guarantee inbox placement and how authentication, sender reputation, and monitoring affect email deliverability. Oct 27, 2026 ](/blog/why-spf-compliance-does-not-guarantee-the-inbox/)[ Intermediate SPF Is Nearly Universal—Until You Change the Sample Explore SPF adoption statistics, compare global and EU findings, and learn how proper SPF configuration and DMARC enforcement improve email security. Oct 16, 2026 ](/blog/spf-is-nearly-universal-until-you-change-the-sample/) ## Fix your SPF record, free Give us a test drive for 30 days at no cost. Fix your broken SPF in less than 60 seconds! 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