MX Health Monitoring

Verify your mail server is configured and reachable.

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MX health monitoring checks that your domain has valid MX records and that the primary mail server resolves successfully. Broken MX configuration means lost email — often silent for days.

How it works

Uptrue resolves MX records for your domain, sorts by priority, and attempts to resolve the highest-priority mail server's A record. If MX records are missing or the primary server doesn't resolve, an alert fires.

What Uptrue checks

MX records present
MX record priority ordering
Primary mail server A record resolves
All MX servers reachable

Alert conditions

No MX records found for domain
Primary MX host does not resolve
Why this matters

Email failures are often the last thing discovered during domain migrations, registrar transfers, or DNS changes. By then, days of mail may have been lost.

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Free plan · 3 monitors · No credit card required
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Got questions?

Frequently asked questions

Everything you need to know about Uptrue — no fluff.

Does it test SMTP connectivity?
Currently checks DNS resolution of MX hosts. SMTP banner checks are on the roadmap.
Their MX hosts are well-known and reliably resolve. We'll alert you if the configuration drifts.
Related Monitor Types
SPF / DMARC MonitoringDNS Record MonitoringBlacklist / DNSBL Monitoring

Ready to set up MX Health Monitoring?

Join teams who monitor their infrastructure with Uptrue. Free plan, no credit card required. Want to spot-check first? Run our free SPF & DMARC checker.

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