MX record checker
Enter a domain to fetch its live MX records from DNS. See which mail servers handle its email, in what priority order, and whether there's a backup for failover.
What MX records do
MX (Mail Exchange) records tell the world which servers accept email for a domain. Each record carries a priority number — the lowest number is tried first, higher numbers act as backups. This tool reads the live records and lists them in priority order.
- Records present — no MX means the domain can't receive mail
- Priority order — the lowest number is the primary server
- Redundancy — a second MX gives you failover if the primary is down
Reading the result
- One MX record works, but leaves no backup if that server fails
- Multiple records at different priorities give graceful failover
- MX hostnames should resolve to real servers — dangling MX loses mail
- MX governs receiving; sending authentication is SPF, DKIM and DMARC
Frequently asked questions
Does MX affect whether my mail lands in the inbox?
MX controls receiving, not sending. For inbox placement of the mail you send, SPF, DKIM and DMARC matter — check those too.
How many MX records should I have?
At least two at different priorities is ideal for failover, though many providers run a single resilient endpoint. What matters is that they resolve and accept mail.
Does this change anything?
No. It's a read-only lookup of public DNS and changes nothing on your domain.
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