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

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.