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Knowledge Base & Operational DocumentationHow to Check Whether a Domain’s Email Records Point to an Old Provider
11/10/2026
MX or authentication records can remain at a former mail host after migration, causing split delivery or authentication failures.
Checks to make
Confirm authoritative nameservers and current MX, SPF, DKIM, and DMARC records. Compare them with the active provider’s documented values and check for legacy hosts still sending. Change records carefully and verify delivery after resolver caches update.
When to get help
DNS and email support can reconcile records with the active mail service. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.