INDIVIDUAL MCP TOOL

ptr_lookup

Reverse DNS lookup.

themailx.comnone authenticationAvailability not checked

Input schema

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.mailx-deliverability]
url = "https://themailx.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "mailx-deliverability": {
      "type": "http",
      "url": "https://themailx.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: mailx-deliverability
Remote MCP URL: https://themailx.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "mailx-deliverability": {
      "url": "https://themailx.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "mailx-deliverability": {
      "type": "http",
      "url": "https://themailx.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "mailx-deliverability",
  "transport": "streamable-http",
  "url": "https://themailx.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

spf_check — Check if a domain has a valid SPF (Sender Policy Framework) DNS record.
dkim_check — Check if a domain has a valid DKIM (DomainKeys Identified Mail) DNS record for a given selector.
dmarc_check — Check if a domain has a valid DMARC (Domain-based Message Authentication, Reporting & Conformance) DNS record.
bimi_check — Check if a domain has a valid BIMI (Brand Indicators for Message Identification) DNS record.
dmarc_generate — Generate a DMARC DNS record for a domain.
spf_generate — Generate an SPF DNS record for a domain based on the email provider being used.
smtp_check — Test an SMTP server connection by attempting to connect and authenticate.
imap_check — Test an IMAP server connection by attempting to connect and authenticate.