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DMARC Shark — Email DNS Checker

com.dmarcshark/email-dns-checker · v1.0.0

New (7 days)

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Can write (some tools are not declared read-only)
Capabilities declared	logging, prompts, resources, tools
Tool definitions	2 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.

streamable-http · https://dmarcshark.com/mcp

claude mcp add --transport http email-dns-checker https://dmarcshark.com/mcp

{
  "mcpServers": {
    "email-dns-checker": {
      "url": "https://dmarcshark.com/mcp"
    }
  }
}

check_domain
Runs fresh, bounded public SPF, DMARC, MX and optionally specified DKIM-selector DNS checks. Changes the public saved snapshot. Rate limited. DNS findings do not prove message authentication.
get_saved_result
Reads the last saved, timestamped public snapshot without making any DNS queries. Results expire after 90 days.

Repository · Website · JSON · Text for agents · Registry updated 2026-10-18