DNS, packets, and the wires between

1 articleWritten by Ishan Karunaratne

A practical DNS health check walkthrough. Cover NS, A, AAAA, MX, SPF, DKIM, DMARC, CAA, DNSSEC in one pass, with real examples and fixes for the most common misconfigurations.

How to Run a DNS Health Check on Your Domain

A practical DNS health check covers nameservers, A and AAAA records, MX, SPF, DKIM, DMARC, and CAA. Here is the full checklist, what each record actually tells you, and how to verify all of them in one pass.

April 12, 2026Read post