mx.scan/diagnostics

up checked 2026-11-11T06:37:55.249Z

Unclaimed · Unverified

Publisher-provided title

scan.mx Email Diagnostics

Publisher-provided description

Email deliverability check: MX, SPF, DKIM, DMARC, blacklists, MTA-STS, DNSSEC, BIMI. Graded, no key.

Summary by lookupd

Lets an agent check a domain's email deliverability: MX, SPF, DKIM, DMARC, MTA-STS, DNSSEC, BIMI and blocklist status, with a graded report.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http diagnostics https://api.scan.mx/mcp

Codex, remote (streamable-http)

codex mcp add diagnostics --url https://api.scan.mx/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Publisher-provided text

check_domain Run the full email and DNS deliverability check for a domain: MX, SPF, DKIM, DMARC, DNS health, provider detection, and blacklists. Returns a letter grade (A+ t
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_mta_sts Check the domain MTA-STS policy (_mta-sts TXT and the HTTPS policy file, mode and MX coverage) and its TLS-RPT reporting record.
check_dnssec Check DNSSEC validation and DNS health: delegation, nameserver count, SOA, and reverse DNS of the mail servers.
check_bimi Check the domain BIMI record at default._bimi: the SVG logo URL, the VMC/CMC certificate, and the DMARC enforcement BIMI needs.
check_dkim Check DKIM signing keys for a domain. Without a selector, common provider selectors are probed. Pass an explicit selector to look up that exact key at selector.

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/mx.scan/diagnostics.svg)](https://lookupd.com/servers/mx.scan/diagnostics)