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Knowledge Base & Operational DocumentationHow to Review DNS Records Before Moving Email to a New Security Gateway
11/10/2026
A mail gateway change can affect MX routing, SPF authorization, DKIM signing, and DMARC alignment.
Checks to make
Map inbound and outbound paths, identify all approved senders and selectors, and plan MX and authentication changes with the provider. Test delivery and headers using controlled accounts before removing the old gateway records.
When to get help
Email and DNS support can coordinate gateway cutover and authentication. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.