check_dmarc

Active

declared in 3.29.5

Look up and validate the DMARC record for a domain. Shows the enforcement level (none/quarantine/reject), alignment mode (strict/relaxed), and aggregate/forensic reporting destinations. Use to determine a domain's DMARC enforcement level, whether it sends aggregate reports, or if it is protected against email impersonation — distinct from check_shadow_domains (which checks TLD variants) and assess_spoofability (composite score). Part of the scan_domain audit.

Parameters schema

{
  "type": "object",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "maxLength": 253,
      "minLength": 1,
      "description": "Domain to check (e.g., example.com)"
    },
    "format": {
      "enum": [
        "full",
        "compact"
      ],
      "type": "string",
      "description": "Output verbosity. Auto-detected if omitted."
    },
    "force_refresh": {
      "type": "boolean",
      "description": "Bypass cache and run a fresh check. Useful after DNS changes."
    }
  }
}

What this tool wraps· 0 endpoints

min confidence0.70 0.50

No endpoints wrapped at confidence ≥ 0.50.

Parent server

com.blackveilsecurity/dns

https://github.com/MadaBurns/bv-mcp

2/7 registries

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