DNS Doctor MCP server

DNS Doctor is a helper that lets your AI look at the technical settings behind your domain name, the ones that decide whether your email lands in inboxes or in spam. It scans your email authentication (SPF, DMARC, DKIM), checks blacklists, and watches your domain and SSL expiry. It is handy for anyone who runs a website or sends email from a company domain and does not want to become a DNS expert.

What this MCP server does

You tell your AI something like "why is our email going to spam?" and name your domain. The AI passes that to the DNS Doctor helper, which reads your domain's real DNS records from the internet. DNS Doctor checks your SPF, DMARC, and DKIM setup, your mail servers, blacklist status, and expiry dates. It then hands the AI a report, and the AI explains it to you in normal language. If a fix is needed, DNS Doctor builds a corrected record that is checked by a strict rule engine, not guessed by the AI.

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What you can do with it

• Scan a domain and get a full report on its email authentication
• Build a corrected DMARC record that is checked before you publish it
• Count your SPF lookups against the limit of 10
• Check whether a DNS change has spread across the world
• Look up your registrar, nameservers, and domain expiry date
• Check blacklist status and reverse DNS for an IP address
• Audit which other services are allowed to send email as your domain

Try asking your AI

• “Why are our invoices landing in customers' spam? Our domain is example.com”
• “Check the SPF and DMARC setup for example.com and tell me what to fix”
• “Has our new DNS record gone live everywhere yet?”
• “When does our domain expire and are we on any blacklists?”

What it gives back to you

You get back a written summary in the chat, not a wall of technical text. It lists what is set up correctly, what is missing, and what to change, with the exact record text to paste into your DNS host when a fix is ready. It can also give you counts, dates, and a simple verdict on whether a change has spread yet. Nothing is changed on your domain automatically; you always get the answer and the record, and you decide what to do.

Before you start

Who it's for

Anyone who runs a company domain or sends email from one, like office managers, marketing staff, and small business owners, plus IT folks who want a quick second opinion.