MCP tool
check_ptr
Verify forward-confirmed reverse DNS (PTR/FCrDNS) for mail servers.
The check_ptr 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_ptr
From the publisher:Verify forward-confirmed reverse DNS (PTR/FCrDNS) for mail servers. 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.
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.