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Questions · Published 2026-09-29 · Updated 2026-09-29 · AgentiSend

What does domain_check_window_expired mean?

domain_check_window_expired means the send or the check was refused with that code. The catalogue message is quoted below, retryable is false, and the fix names the next call.

domain_check_window_expired means the request was refused with this code. The error catalogue message is "The 72-hour check window closed before the required DNS records resolved." The fix is "Publish the required records from GET /domains/:id, then POST /domains/:id/verify. That reopens the window for another 72 hours." retryable is false.

The fix, and the call it names

The fix names GET /domains/{id} for the required records, then POST /domains/{id}/verify, which reopens the 72-hour window. retryable is false: waiting past the window does not check again until that verify call. Publish the required rows from GET /domains/{id}/setup first. POST /domains is how the name was registered. Recommended rows are not what closed the window.

curl -sS -X GET https://api.agentisend.com/domains/9c8f8f0e-3d1a-4d3f-9a1e-2b7c1a0f5e42 \
  -H "Authorization: Bearer $AGENTISEND_API_KEY"
200
{
  "click_tracking": false,
  "created_at": "2026-09-04T09:14:00.000Z",
  "dkim_selector": "example",
  "id": "9c8f8f0e-3d1a-4d3f-9a1e-2b7c1a0f5e42",
  "name": "example",
  "open_tracking": false,
  "provider_hints": {
    "cloudflare": "example",
    "godaddy": "example",
    "namecheap": "example",
    "route53": "example"
  },
  "recent_events": [],
  "records": [],
  "region": "us",
  "return_path_subdomain": "example",
  "status": "pending",
  "tls_mode": "opportunistic",
  "tracking_issues": [],
  "tracking_subdomain": "example",
  "verified_at": "2026-09-04T09:14:00.000Z",
  "warnings": [],
  "zone": "example"
}
Response

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Written by the AgentiSend team.