Zovo DNS Checker

Check live DNS records and email authentication (SPF, DMARC, DKIM, MX) for a domain.

Zovo DNS Checker reads a domain's live public DNS records through DNS-over-HTTPS and explains the email-authentication setup. It lists MX hosts, parses SPF and counts the DNS lookups against the RFC 7208 limit of 10, reads the DMARC policy, reporting addresses and alignment, checks DKIM keys for given selectors, and returns a pass/warn/fail findings list with a one-line fix for each problem, plus a CSV report. It also returns raw A, AAAA, MX, NS, TXT, CNAME, CAA, and SOA records with their TTLs.

What it does

Live DNS lookups through public DNS-over-HTTPS resolvers
SPF parsing with the DNS-lookup count and the 10-lookup limit (RFC 7208)
DMARC policy, subdomain policy, percentage, reporting addresses, and alignment
DKIM key checks for up to five selectors, including revoked and short keys
MX check with the null-MX and MX-points-to-CNAME cases
Pass/warn/fail findings with a one-line fix, and a CSV report to download

Try asking

“Check the email DNS records for example.com”

“Do an SPF and DMARC check for example.org”

“Show the MX and TXT records for example.com”

Limitations

Public DNS only, as seen by public resolvers at the moment of the check
DKIM needs the selector name; without it the key cannot be found
Not a full deliverability test; it does not send or receive mail
It reports records, not what a specific receiving server will decide

Add it

ChatGPT: once Zovo DNS Checker is approved, add it from the ChatGPT plugin directory.

Claude: go to Customize > Connectors > Add custom connector and enter https://dns-checker.zovo.one/mcp. No sign-in is needed. Once Zovo DNS Checker is listed in the Claude connector directory, you can add it from there too.

Other MCP clients can connect to the same endpoint: https://dns-checker.zovo.one/mcp