OpenVibeNet

Online network diagnostics — DNS, GeoIP, ping, SSL, Whois, HTTP headers, and more. No login required.

About the MX Record Lookup

See which servers accept mail for a domain and their priority order — the first thing to check when email is bouncing or arriving somewhere unexpected.

Frequently asked questions

What does the MX priority number mean?
Lower numbers are tried first. Equal values are used in rotation, which spreads load across servers.
Why is my email bouncing?
Start here: a missing MX record, or one pointing at a host that no longer exists, stops delivery outright.

Related tools

Browse all network tools · OpenVibe home · Live streaming