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PopNx MCPMCP servers for people who use AI · explained in plain words

TamingDNS

by tamingdns.comversion 1.0.0i★ –iRuns in the cloud
Registry namecom.tamingdns/mcp

Install

Overview

Description from the maker (original English)

Check SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, BIMI, DANE and DNSSEC, and analyse email headers.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://tamingdns.com/mcp

Run this in your terminal

claude mcp add --transport http tamingdns https://tamingdns.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "tamingdns": {
      "url": "https://tamingdns.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://tamingdns.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • check_spf

    Check the SPF record for a domain. Returns the raw record, grade (A-F), the terminal `all` qualifier (resolved through redirect= chains), structured findings (NEAR_LOOKUP_LIMIT, LOOKUP_LIMIT_EXCEEDED, PLUS_ALL_DANGEROUS, PTR_MECHANISM_DEPRECATED, etc.), and an `analysis` block wi

  • check_dkim

    Look up a DKIM public key at ._domainkey. and validate it. Detects key revocation (empty p=), RSA key length (KEY_TOO_SHORT below 1024, KEY_WEAK below 2048), SHA-1 hash deprecation, and t=y test mode. For selector1/selector2 it also checks a Microsoft 365 CNAME target carries the

  • 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 an

  • check_tls_rpt

    Check the TLS-RPT (SMTP TLS Reporting, RFC 8460) record at _smtp._tls. . Strict §3 classification: the record must BEGIN with the case-sensitive v=TLSRPTv1 tag, more than one such record means receivers treat TLS-RPT as not implemented, and rua= is required. Validates every rua=

  • 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. /.well-known/mta-sts.txt fetched WITHOUT following redirects (§3.3), str

  • check_bimi

    Check default._bimi. : 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 with no sp=none — the RFC 7489 reading Gmail an

  • check_dane

    Check SMTP DANE / TLSA records for a domain (RFC 7672). Resolves the MX hosts (falls back to the apex when none), looks up the TLSA record at _25._tcp. over binary DoH, classifies each record (usage 0-3 / selector 0-1 / matching 0-2 per RFC 7671 §2.1), and confirms the answer car

  • check_dnssec

    Validate a domain's DNSSEC chain of trust. Pulls DS (at the parent), DNSKEY, and RRSIG over binary DoH, walks the chain zone-by-zone (root → TLD → domain) recomputing each DS digest against the published DNSKEYs (RFC 4034 §5.1.4), and cross-checks the AD bit across Cloudflare, Go

  • check_mx

    Inspect a domain's MX / mail-routing posture. Resolves the apex MX RRset (priority-sorted), and for each host the A/AAAA addresses, PTR + forward-confirmed reverse DNS (FCrDNS), DANE TLSA at _25._tcp. , IP-literal (RFC 5321 §5) and CNAME (RFC 2181 §10.3) violations, and the mail

  • analyze_email_headers

    Analyse a pasted block of raw email headers for spoofing and phishing tells. Input is the raw headers (everything up to the first blank line — "Show original" / "View source"); the message body is not required. Returns structured findings + a phishing verdict (likely_phishing/ver

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ! Caution

    Maker matches the repo

    The registry lists no source repo, so we cannot match the publisher (tamingdns.com) to the code

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 126 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 10 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

  • More stars than 0% of the other 1777 servers in this category
  • Published to the registry more recently than 96% of the other 1777 servers in this category
  • Basic checks equal to or better than 44% of the other 1777 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is TamingDNS safe?

It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry today.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago
Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago
Install

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago
Install

README from the maker

No README found in the repo

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