INDIVIDUAL MCP TOOL

check_mail_security

Grade one domain's email authentication and list every check: SPF (single record, the 10 DNS-lookup limit across includes, the all qualifier), DMARC (policy, inheritance from the organizational domain, pct, report addresses), MTA-STS, TLS-RPT, BIMI, DANE and null MX.

dc5.technone authenticationAvailability not checked

LIVE ENDPOINT

https://whois.dc5.tech/mcp

No auth detected

Connect to this endpoint to inspect the live schema for check_mail_security and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

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

A tool name or description suggests sending messages.

Parent server

dc5.tech

CONNECT WITH APPROVAL

Client installation

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

Codex

~/.codex/config.toml

[mcp_servers.dc5-whois]
url = "https://whois.dc5.tech/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "dc5-whois": {
      "type": "http",
      "url": "https://whois.dc5.tech/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: dc5-whois
Remote MCP URL: https://whois.dc5.tech/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": {
    "dc5-whois": {
      "url": "https://whois.dc5.tech/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "dc5-whois": {
      "type": "http",
      "url": "https://whois.dc5.tech/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "dc5-whois",
  "transport": "streamable-http",
  "url": "https://whois.dc5.tech/mcp"
}

MCP Inspector

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

Related tools

check_lookalike — Check whether one domain or Web3 name is a visual look-alike (homograph): letters from different scripts mixed in one label, or every non-ASCII letter having a Latin twin, so раураl.
list_data_sources — List the local datasets and feeds behind lookup_target (RIR delegations, IANA, Public Suffix List, cloud / CDN ranges, Tor and Private Relay, reputation lists, GeoLite2) with state, record count, generation date and a stale flag.
lookup_target — Look up one domain, IP address, CIDR block, ASN (AS15169) or Web3 name (ENS .