Domain monitoring

Follow SPF, DMARC and MX records, sampled MX reverse DNS and blocklists, plus available STARTTLS, MTA-STS and TLSA observations. Checks run about every 6 hours and show when evidence is unavailable. Review configuration changes with a dated history and email or Telegram alerts. These observations cover public infrastructure; a real message test is needed to inspect its sending IP, DKIM and inbox placement.

Free for verified accounts. Add a domain and choose email or Telegram alerts. Sign in to set up monitoring.