com.dmarcshark/email-dns-checkerMCP Registry

DMARC Shark — Email DNS Checker

v1.0.0

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

Endpoint health

online

Last checked: 11/3/2026, 4:15:44 PM
Latency: 343 ms
Consecutive failures: 0

Endpoint reachable: pass
Protocol valid: pass
MCP handshake valid: pass

Machine-readable profile

mcp-server · schema v1 · callable

mcp-server:com.dmarcshark%2Femail-dns-checker

Profile JSON ↗

Connect this server

Generated config contains no credentials. Keep any required secrets in your client's local environment.

Client

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

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

2 shown · authentication unknown

Check a domain's public email DNS

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.

Schema valid · SHA-256 27f277f331b8…

View input schema

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string"
    },
    "selectors": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 2
    }
  },
  "required": [
    "domain"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}

Read a saved domain check
get_saved_result
Reads the last saved, timestamped public snapshot without making any DNS queries. Results expire after 90 days.
Schema valid · SHA-256 a4920ac93175…
View input schema
```
{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string"
    }
  },
  "required": [
    "domain"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

Connections

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

Links

Website ↗Repository ↗Health JSON ↗

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

2 shown · authentication unknown

Check a domain's public email DNS

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.

Schema valid · SHA-256 27f277f331b8…

View input schema

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string"
    },
    "selectors": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 2
    }
  },
  "required": [
    "domain"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}

Read a saved domain check

get_saved_result

Reads the last saved, timestamped public snapshot without making any DNS queries. Results expire after 90 days.

Schema valid · SHA-256 a4920ac93175…

View input schema

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string"
    }
  },
  "required": [
    "domain"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}