Free MX lookup
Where does this domain's email actually go?
See every mail server a domain is configured to receive email at, in priority order, with the provider identified in plain English where we can tell.
What this check looks at
We query the domain's MX records directly and list every mail server returned, sorted by priority. Where the mail server's hostname matches a pattern used by a major provider, we label it in plain English so you don't have to recognize raw hostnames like aspmx.l.google.com yourself.
MX records only control where mail is delivered — they say nothing about whether that mail is authenticated or protected from spoofing. Pair this with our SPF checker and DMARC checker for the full picture of a domain's email health.
Common questions
What is an MX record?+
An MX (Mail Exchange) record is the DNS entry that tells the rest of the internet which mail servers are responsible for receiving email for your domain, and in what order of priority. Without one, a domain simply cannot receive email.
What does the priority number mean?+
Lower numbers are tried first. If a domain lists two mail servers at priority 10 and 20, sending servers will attempt the priority-10 server first and only fall back to the priority-20 one if the first is unreachable.
Why does this matter if I already know I use Gmail or Outlook?+
It confirms the setup is actually live and correctly pointed — a common failure mode is a domain migration where MX records were never updated, so mail silently goes to an old, abandoned mailbox instead of the current one.
My MX lookup came back empty. What does that mean?+
It means the domain has no mail servers configured at all, so any email sent to it will bounce immediately. This is common (and fine) for domains that are only used for a website and never send or receive email — but if you expect this domain to receive mail, this is the problem to fix first.
How is this different from a general DNS lookup tool?+
This tool is focused specifically on MX records and adds a plain-English guess at which provider (Google Workspace, Microsoft 365, and others) is behind each mail server, instead of just showing a raw hostname.
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