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
From the publisher:Detect SubdoMailing risk: analyzes the SPF include chain for dangling or hijackable subdomains that could let an attacker send email as the domain. Use when you want to know if an SPF include chain can be hijacked through a dangling domain, or to detect subdomain mailing risk hidden in SPF includes. Part of the scan_domain audit.
Install BlackVeil DNS & Email Security Scanner →Parameter Type Description domain*string Domain to check (e.g., example.com) force_refreshboolean Bypass cache and run a fresh check. Useful after DNS changes. formatstring Output verbosity. Auto-detected if omitted.
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