Email Auth Checker
by FastDrop
SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts.
SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts. Official MCP Registry: dev.workers.quietworklabs.email-auth-check/email-auth-check@1.0.0. Remote endpoint: https://email-auth-check.quietworklabs.workers.dev/mcp
Problem it solves
Discoverable MCP server listed in the official MCP Registry.
How it's different
Remote MCP endpoint ingested from the official registry and probed by FastDrop.
Ingested from the official MCP Registry
FastDrop pulled this entry from the official MCP Registry as dev.workers.quietworklabs.email-auth-check/email-auth-check and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed
and the description is not theirs.
If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.
Claim this listingTools this endpoint exposes
Read directly from the endpoint on 18 Oct 2026. Not supplied by the maker.
email_auth_reportFull email-auth report for a domain: SPF (recursive 10-lookup count, void lookups, +all/?all, terms after all), DMARC (policy, pct, alignment, rua authorization), DKIM (keys and RSA key bits at common
spf_lookup_countExpands a domain's SPF record recursively (include/redirect) like a receiver does and counts DNS-querying terms against the RFC 7208 limit of 10 and void lookups against the limit of 2. Returns per-te
dmarc_checkFinds and validates a domain's DMARC record (falls back to the organizational domain): policy, subdomain policy, pct, alignment modes, rua/ruf, and whether external report domains authorized reports (
domain_expiryRegistration data for a domain from the registry's RDAP server (IANA bootstrap): registrar, created/updated/expiry dates, days until expiry with ok/expiring_soon/expired status, EPP status codes, name
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