INDIVIDUAL MCP TOOL

check_mta_sts

Check MTA-STS (RFC 8461) for a domain: the _mta-sts TXT record (strict §3.1 selection — case-sensitive leading v=STSv1, exactly one record, required 1-32 alphanumeric id), the policy file at https://mta-sts.<domain>/.well-known/mta-sts.txt fetched WITHOUT following redirects (§3.3), strict §3.2 policy validation (version/mode/max_age required, mx required unless mode none, max_age ≤ 31557600, duplicate keys first-wins), the policy-host X.509 certificate (§3.3 — an invalid cert means compliant senders fetch no policy), and live MX coverage against the mx: patterns (§4.1 — wildcards match exactly one leftmost label; coverage is all/partial/none, partial meaning strict senders skip the uncovered hosts per §5.1).

tamingdns.comnone authenticationAvailability not checked

Input schema

{}

Risk classification

Inferred read-only · medium confidence · heuristic, not a guarantee.

A tool name or description suggests retrieving external content.

Parent endpoint

tamingdns.com

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.tamingdns-com]
url = "https://tamingdns.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "tamingdns-com": {
      "type": "http",
      "url": "https://tamingdns.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: tamingdns-com
Remote MCP URL: https://tamingdns.com/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": {
    "tamingdns-com": {
      "url": "https://tamingdns.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "tamingdns-com": {
      "type": "http",
      "url": "https://tamingdns.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "tamingdns-com",
  "transport": "streamable-http",
  "url": "https://tamingdns.com/mcp"
}

MCP Inspector

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

Related tools

check_spf — Check the SPF record for a domain.
check_dkim — Look up a DKIM public key at <selector>._domainkey.<domain> and validate it.
check_dmarc — Check the _dmarc record for a domain with DUAL discovery: the RFC 7489 §6.6.3 organisational-domain ladder (what major receivers enforce today — grade/verdict anchor to it) AND the RFC 9989 §4.10 DNS Tree Walk (8-query cap, psd=n/y stop rules, fewest-labels org selection) into analysis.discovery {legacy, tree_walk, diverges}.
check_tls_rpt — Check the TLS-RPT (SMTP TLS Reporting, RFC 8460) record at _smtp._tls.<domain>.
check_bimi — Check default._bimi.<domain>: parses the BIMI record, validates the SVG Tiny-PS logo, inspects the VMC chain (expiry, EKU, SCT, issuer-accepted, SAN match, logotype hash), and verifies the DMARC prerequisite (p=quarantine/reject at pct=100 — the RFC 7489 reading Gmail and Apple Mail evaluate today).
check_dane — Check SMTP DANE / TLSA records for a domain (RFC 7672).
check_dnssec — Validate a domain's DNSSEC chain of trust.
check_mx — Inspect a domain's MX / mail-routing posture.