INDIVIDUAL MCP TOOL

check_domain

Run the full email and DNS deliverability check for a domain: MX, SPF, DKIM, DMARC, DNS health, provider detection, and blacklists.

scan.mxnone authenticationAvailability not checked

Input schema

{}

Potential side effects detected · medium confidence · heuristic, not a guarantee.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.scan-mx]
url = "https://api.scan.mx/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "scan-mx": {
      "type": "http",
      "url": "https://api.scan.mx/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: scan-mx
Remote MCP URL: https://api.scan.mx/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "scan-mx": {
      "url": "https://api.scan.mx/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "scan-mx": {
      "type": "http",
      "url": "https://api.scan.mx/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "scan-mx",
  "transport": "streamable-http",
  "url": "https://api.scan.mx/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

check_mx — Check the MX records of a domain: presence, hostnames, resolution, null-MX, and common misconfigurations.
check_spf — Check the domain SPF policy: presence, syntax, the all qualifier, and the 10-lookup limit.
check_dmarc — Check the domain DMARC policy at _dmarc: presence, policy strength (none/quarantine/reject), and reporting.
check_blacklist — Check whether the domain and its mail server IPs are listed on the Spamhaus (ZEN, DBL, ZRD, AuthBL), SpamCop, GBUdb and PSBL blocklists.
check_dkim — Check DKIM signing keys for a domain.