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Find domains sharing MX mail serversResolve target MX records and discover domains using the same mail infrastructure.
MXMAILSHARED MXCANDIDATESMATCHED

Reverse MX

Enter a domain or an MX host (e.g. hzmx01.xmail.ntesmail.com). We verify shared MX from public datasets.

How This Query Works

Reverse MX supports Domain Mode and MX Host Mode, then performs verified overlap matching on mail exchanger records.

  • 1Domain input resolves target MX set directly; MX host input enters MX Host Mode automatically.
  • 2Candidates are discovered from reverse IP sources tied to MX host infrastructure.
  • 3Final results keep only domains with confirmed shared MX hosts after DNS revalidation.
  • 4When matched stays zero, review source errors: this usually indicates passive-source coverage limits.
Domain/MX Host ModesMX RevalidationSource DiagnosticsHigher Recall
Reverse MX results are best-effort from public data plus DNS verification, and may be incomplete.