MCP tool

check_subdomailing

Detect SubdoMailing risk: analyzes the SPF include chain for dangling or hijackable subdomains that could let an attacker send email as the domain.

The check_subdomailing tool is provided by BlackVeil DNS & Email Security Scanner. Install that server in your AI client and the assistant can call it directly.

Servers exposing check_subdomailing

Tool lists are read from the live servers (or, for packaged servers, from their documentation) each morning, so this reflects what they exposed at the last refresh. Search all tools.