在安全性 & 規範中心轉寄電子郵件的新網域New domains being forwarded email insight in the Security & Compliance Center

重要

改良的 Microsoft 365 安全性中心現在可供公開預覽。The improved Microsoft 365 security center is now available in public preview. 這個新的體驗將適用於端點的 Defender、適用於 Office 365 的 Defender、Microsoft 365 Defender 和更多功能帶到 Microsoft 365 安全性中心裡面。This new experience brings Defender for Endpoint, Defender for Office, 365 Microsoft 365 Defender, and more into the Microsoft 365 security center. 了解新功能Learn what's new. 本主題僅適合適用於 Office 365 的 Microsoft Defender 和 Microsoft 365 Defender。This topic might apply to both Microsoft Defender for Office 365 and Microsoft 365 Defender. 請參閱 [適用於] 區段,並且尋找此文章中可能有所不同的特定圖說文字。Refer to the Applies To section and look for specific call outs in this article where there might be differences.

適用於Applies to

將電子郵件轉寄給特定網域中的外部收件者,有一些有效的商業原因。There are valid business reasons to forward email messages to external recipients in specific domains. 不過,當組織中的使用者突然開始將郵件轉送至一個網域,而您的組織中沒有任何人曾經轉送郵件給 (新網域) 時,這是可疑的。However, it's suspicious when users in your organization suddenly start forwarding messages to a domain where no one in your organization has ever forwarded messages to (a new domain).

這種情況可能表示使用者帳戶遭到破壞。This condition might indicate that the user accounts are compromised. 如果您懷疑帳戶已遭破壞,請參閱 回應遭到破壞的電子郵件帳戶If you suspect the accounts have been compromised, see Responding to a compromised email account.

當您組織中的使用者將郵件轉寄給新網域時,在 安全性 & 合規性中心轉寄的新網域 會通知您。The New domains being forwarded email insight in the Security & Compliance Center notifies you when users in your organization are forwarding messages to new domains.

這種洞察力只會在偵測到問題時出現,而且會出現在 [ 轉接回報報告 ] 頁面上。This insight appears only when the issue is detected, and it appears on the Forwarding report page.

轉寄的新網域電子郵件深入解析

當您按一下該小工具時,會出現一個快顯視窗,您可以在其中找到有關轉寄郵件的詳細資訊,包括回 轉送報告的連結。When you click on the widget, a flyout appears where you can find more details about the forwarded messages, including a link back to the Forwarding report.

在按一下要轉寄電子郵件的新網域後,出現的詳細資料浮出控制項

您也可以在 [ (報表 儀表板] 或 [) ] 的 [熱門洞察力 & 建議] 區域中按一下 [全部查看] 之後,取得此詳細資料頁面 > https://protection.office.com/insightdashboardYou can also get to this details page when you select the insight after you click View all in the Top insights & recommendations area on (Reports > Dashboard or https://protection.office.com/insightdashboard).

若要防止自動將郵件轉送到外部網域,請設定部分或所有外部網域的遠端網域。To prevent automatic message forwarding to external domains, configure a remote domain for some or all external domains. 如需詳細資訊,請參閱 管理 Exchange Online 中的遠端網域For more information, see Manage remote domains in Exchange Online.

如需郵件流程儀表板中其他真知灼見的詳細資訊,請參閱 Security & 合規性中心中的郵件流程洞察力For information about other insights in the Mail flow dashboard, see Mail flow insights in the Security & Compliance Center.