--- service: "DRACOON" status: "up" reports_last_hour: 0 reports_last_12_hours: 0 baseline_reports_per_hour: 0 checked_at: "2026-10-31T07:47:29.338Z" url: "https://instatus.com/now/ja/dracoon.com" official_status_page: "https://status.dracoon.com" website: "https://www.dracoon.com/de/home" --- # DRACOON はダウンしていますか？ いいえ、稼働中です. 過去1時間で0件の報告。 ## 公式アップデート - **Scheduled Maintenance** (SCHEDULED, 2026-11-04T21:00:00.000Z): We will be undergoing scheduled maintenance during this time. A short downtime for a couple of minutes can occur. - **Scheduled Maintenance** (COMPLETED, 2026-10-28T21:00:00.000Z): The scheduled maintenance has been completed. - **Partial Outage of Email notifications** (RESOLVED, 2026-10-26T09:29:04.000Z): **20 - 26 October 2026: Post-Mortem** We experienced an issue with email notifications between 20 October and 26 October 2026. Our team has worked diligently to identify the root cause and implement a resolution. In this post-mortem, we want to share the details of what happened, why it happened, what we did to resolve it, and what we will do to prevent similar incidents in the future. **What happened?** During this period, some recipients did not receive email notifications from DRACOON. The issue mainly affected organisations whose incoming mail runs through certain corporate email security gateways. For these recipients, many notifications were rejected and not delivered. All other DRACOON functions were unaffected. ‌**Why did this happen?** Before accepting a mail, some email security gateways check that the sender's domain is valid. A DNS service operated by a third-party provider began giving an incorrect answer for part of our notification sender domain's configuration. Because of that answer, these gateways wrongly treated our sender domain as invalid and rejected the notifications. Our own configuration and our mail delivery service were working correctly throughout. **What did we do?** After the first customer reports, we analyzed the delivery logs together with our email delivery partner and found that the rejections followed a clear pattern. We traced them to the third-party DNS issue. On 26 October, we changed the configuration of our notification sender domain so that it no longer depends on the affected third-party service. After the change, delivery returned to normal, and we monitored it closely to confirm the issue was resolved. **What can we do to improve?** * We are reviewing our email-related configurations to remove dependencies on external services. * We are improving our monitoring of email delivery, so that unusual rejection rates are detected and investigated sooner. We apologize for any inconvenience this incident may have caused. We are committed to ensuring the stability and reliability of our services and will continue to take proactive measures to prevent similar incidents from happening in the future. If you have any questions or concerns, please don't hesitate to reach out to our support team for assistance. ## DRACOONの障害FAQ ### DRACOON は現在ダウンしていますか？ いいえ、稼働中です. 過去1時間で0件の報告。 ### DRACOON は全員が使えない？それとも自分だけ？ あなただけの問題かもしれません。DRACOON の報告はいつも通りの水準なので、ページの再読み込み、接続の確認、ログアウトして再ログインを試してみてください。 ### DRACOON ではどんな問題が報告されている？ 過去1時間、DRACOON の不具合の内容を伝えた人はいません。あなたの環境で動かないものがあれば、上で選んでほかの人にも見えるようにしてください。 ### DRACOONの直近の障害はいつ？ DRACOONの報告は過去30日間急増していません。 ### DRACOON にはステータスページがありますか？ はい。DRACOON は公式ステータスページで最新情報を公開しており、現在は「稼働中」と表示されています。 [ステータスページを開く](https://status.dracoon.com/) ### DRACOON が動かないときはどうすればいい？ このページと DRACOON のステータスページで最新情報を確認し、数分待ってからもう一度試してください。再インストールは不要です。障害の場合は、サービス側で修正されます。 ### DRACOON の問題を報告するには？ このページ上部の「同じ問題に遭遇しています」を押して、不具合の内容を選んでください。報告は1分以内にライブチャートに反映され、コメントで状況をほかの人に伝えることもできます。 ### Instatus Nowはどうやって分かるの？ このページの利用者からの報告と、1分ごとに確認しているDRACOONの公式ステータスページを組み合わせています。