Welcome to checkdmarc’s documentation

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checkdmarc is a Python module and command line parser for SPF and DMARC DNS records


  • API and CLI

  • Can test multiple domains at once

  • CLI output in JSON or CSV format

  • Parses and validates MX, SPF, and DMARC records

  • Checks for DNSSEC deployment

  • Lists name servers

  • Checks for STARTTLS and TLS support on each mail server

Further reading

Indices and tables