#mx
Articles tagged #mx
Domains & DNSSep 14, 2026 · 5 min read
Reverse DNS explained: PTR records and why mail servers need them
Reverse DNS maps an IP address back to a hostname using PTR records. Here's how it works, why mail servers check it, and how to set it up.
Email & deliverabilityAug 19, 2026 · 7 min read
MX record not working: how to diagnose and fix broken mail routing
A step-by-step guide to diagnosing why your MX record isn't routing mail, covering priorities, trailing dots, CNAME targets and stale records.
Domains & DNSJul 8, 2026 · 4 min read
Complete DNS record guide: A, AAAA, CNAME, MX, TXT, NS & CAA
A practitioner's reference to the core DNS record types — A, AAAA, CNAME, MX, TXT, NS and CAA — with a real example and the standards behind each.
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