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Knowledge Base & Operational DocumentationHow to Review MX Records Before Changing Email Delivery Priorities
11/10/2026
Changing MX priorities can alter failover behavior or route mail to a server that is not ready to accept it.
Checks to make
Confirm each target is active, correctly configured, and intended as primary or fallback. Review TTL and provider guidance, validate TLS and mailbox handling, and test controlled inbound delivery before making priority changes.
When to get help
DNS and email support can review MX routing and failover readiness. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.