A
licenseA
qualityA
maintenanceEnables AI agents to audit email and domain security (SPF, DKIM, DMARC, etc.) for any domain without requiring API keys.
19
51 npm
1
MIT
DnsGuard
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@DnsGuardcheck example.com's email authentication and give me the score"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
DnsGuard
Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.
Live service
Web app and API: https://dnsguard.mike-tusa.workers.dev/
Pricing and plans: https://dnsguard.mike-tusa.workers.dev/
Support: digitalpromohub.support@gmail.com
Related MCP server: Domain Deliverability Checker MCP Server
Use it from an AI assistant (MCP)
DnsGuard is a remote MCP server (Streamable HTTP) at https://dnsguard.mike-tusa.workers.dev/mcp. Tools: check_domain.
Most MCP clients (Claude Desktop, Cursor, Cline, Windsurf) accept this config:
{
"mcpServers": {
"dnsguard": {
"type": "http",
"url": "https://dnsguard.mike-tusa.workers.dev/mcp"
}
}
}Clients that only support stdio can bridge with npx mcp-remote https://dnsguard.mike-tusa.workers.dev/mcp. VS Code uses a servers key instead of mcpServers.
The server.json file is the MCP Registry manifest for this server.
Run your own copy
Requires Node.js 20+ and a Cloudflare account.
npm install
npx wrangler dev # local dev serverwrangler.toml is a template: create your own KV namespaces / D1 databases / rate-limit namespaces and replace the <PLACEHOLDER> values before npx wrangler deploy. Any secrets the Worker reads go in wrangler secret put (or .dev.vars locally), never in the repo.
License
MIT (c) Digital Promo Hub. See LICENSE.
This server cannot be deployed
Maintenance
ActivityMaintained
ResponsivenessNo issues
Related MCP Connectors
Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.
Email security and AI discoverability scores for any domain, with the exact record or tag to fix.
Audit SPF, DKIM, DMARC, MX, BIMI, MTA-STS for a domain; score + grade. $0.003 USDC/call via x402.
21Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
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- AlicenseNot gradedqualityCmaintenanceAudits email deliverability configuration for a domain, checking SPF, DKIM, DMARC, and MX records, returning a score and recommendations.MIT
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