Dns Doctor · LLM Mart

Name: Dns Doctor
Author: LLM Mart

No install snippet on purpose. A working MCP config is a command, its arguments and an environment block — the last two are where API keys live, so this catalogue never stores them and cannot publish them. Follow the link above for the authors' own instructions.

DNS Doctor scans and fixes email authentication and DNS issues, returning validated records rather than guesses. SPF checks are diagnose-only and never auto-generated except for parked domains, to avoid silently de-authorizing real senders. The propagation check reads from six locations on four continents and returns a grid with a deterministic verdict, never asserting convergence without evidence.

Temporary DNS failures are reported as 'temperror' and never counted as failing verdicts, to avoid false alarms. The A–F grade is a pure function of checks with a fixed, versioned rubric; unresolved SPF or DMARC caps the grade at B. Paid ping watches are limited by per-target ceilings, probe intervals, and expiry, ensuring no customer can cause sustained traffic against third parties.

Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.