MX Lookup — Mail Server Records
Find a domain's MX (mail server) records with their priorities — resolved live on our server.
This tool runs on our server. Because a browser can't perform this network lookup, the value you enter is sent to DevKit Labs to run the check — we don't store your queries. A local desktop version that runs from your own machine is planned.
About MX Lookup — Mail Server Records
Enter a domain to see its MX (Mail Exchanger) records — the mail servers that receive email for it — sorted by priority, with the lowest number being the preferred server. It's the fast way to check whether a domain is set up to receive email and where that email is routed.
Because browsers can't query DNS directly, the lookup runs on our server over DNS-over-HTTPS and returns the records to you. We don't store the domains you look up.
Mail servers for a domain
gmail.com
5 gmail-smtp-in.l.google.com · 10 alt1… · 20 alt2…
Lower priority numbers are preferred by sending servers.
Frequently asked questions
What is an MX record?
A DNS record that names the mail server(s) responsible for receiving email for a domain. Each has a priority; senders try the lowest number first.
What does the priority mean?
It's the preference order — sending mail servers try the MX with the lowest priority number first, using higher ones as fallbacks.
No MX records — what does that mean?
The domain isn't set up to receive email directly (or uses its A record as an implicit fallback). Double-check the domain if you expected mail records.
Why does this run on your server?
Browsers can't make DNS queries, so it's done server-side over DNS-over-HTTPS. The domain you enter is sent to our server; we don't store it.