DevOps Paradox DOP 339: DNS Is Old Tech (And That's Why It Still Runs the Internet)
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Feb 25, 2026 Anthony Eden, Founder and CEO of DNSimple with decades in DNS and domain registration. He explains why decades-old DNS still underpins everything online. Topics include running DNS at scale, unicast vs anycast, resolver proximity, common domain mistakes like running production DNS on registrars, email deliverability woes, and practical AI uses for engineers.
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Treat Domains As Critical Intellectual Property
- Lock down domain ownership and access controls to protect intellectual property.
- Avoid shared logins, enable multi-user access, and ensure domains are registered in the company's name to prevent founder disputes.
Most Email Deliverability Issues Are DNS Related
- Email deliverability problems are often DNS problems involving SPF, DKIM, and DMARC.
- Anthony notes many teams skip setting these records, causing failed authentication and deliverability issues for business email.
Document DNS Changes And Commit Zones To Source Control
- Keep DNS change history and explain why records exist to avoid configuration rot.
- DNSimple adds notes per record and teams can store zone files in Git or use Terraform to make DNS auditable and repeatable.