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Email Auth Checker

MCP serverVerified domain · email-auth-check.quietworklabs.workers.devRemote● LiveFree to try

SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts.

Install

Remote server: your requests and data go to email-auth-check.quietworklabs.workers.dev. Claude Code: claude mcp add --transport http email-auth-checker https://email-auth-check.quietworklabs.workers.dev/mcp · Claude app: Settings → Connectors → Add custom connector.

What it can do

The tools this server listed when we connected to it, in its own words.

  • email_auth_report — Full email-auth report for a domain: SPF (recursive 10-lookup count, void lookups, +all/?all, terms after all), DMARC (policy, pct, alignmen
  • spf_lookup_count — Expands a domain's SPF record recursively (include/redirect) like a receiver does and counts DNS-querying terms against the RFC 7208 limit o
  • dmarc_check — Finds and validates a domain's DMARC record (falls back to the organizational domain): policy, subdomain policy, pct, alignment modes, rua/r
  • domain_expiry — Registration data for a domain from the registry's RDAP server (IANA bootstrap): registrar, created/updated/expiry dates, days until expiry

KitScout test notes

Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.

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