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Domain Monitor

Domain Monitor helps teams keep sender configuration healthy over time. It is designed for the operational reality that domains change, DNS records drift, and a working sender setup can quietly become risky if nobody is watching it.

What Domain Monitor is for​

Use Domain Monitor when you need to keep track of:

  • SPF records
  • DKIM alignment and key configuration
  • DMARC policy posture
  • MX and related delivery dependencies
  • sender-domain changes that could affect launch readiness or ongoing deliverability

Who typically uses it​

  • platform teams responsible for production email infrastructure
  • lifecycle teams that depend on branded sender domains
  • release teams that want to verify sender posture before large sends
  1. Add the domain or domains you care about.
  2. Confirm the expected authentication and routing posture.
  3. Review status before major campaigns or releases.
  4. Re-check whenever DNS, mail infrastructure, or ownership changes.

What to do when a domain needs attention​

Start with the item that changed or failed, then work outward:

  1. confirm which DNS record or sender-health signal changed
  2. compare it to the expected production setup
  3. correct the configuration in DNS or the sending platform
  4. re-run the review before resuming large sends

How it fits with other docs​

  • Use Custom domains when you are setting sender identity up for the first time.
  • Use Campaign Probe when you need to review actual live campaign output.
  • Use Deliverability tests when you need a pass/fail release or launch check.
  • Use Reputation when sender-health risks show up in delivery outcomes.