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MX Record Checker

Check if domains use spam gateways like Proofpoint, Mimecast, or Barracuda that can block your cold emails. Upload a CSV to bulk check hundreds of domains.

Check Single Domain

Bulk Check (CSV)

What we check

  • Proofpoint (pphosted.com)
  • Mimecast
  • Barracuda
  • Cisco IronPort
  • Symantec/MessageLabs
  • And 10+ more gateways

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Enter a domain or upload a CSV file to check MX records.