EOP 中的垃圾郵件信賴等級 (SCL) Spam confidence level (SCL) in EOP

適用於Applies to


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.

在使用 Exchange Online 或獨立 Exchange online (Protection 中信箱的 Microsoft 365 組織中,EOP) 組織沒有 Exchange Online 信箱時,輸入郵件會透過 EOP 中的垃圾郵件篩選,並獲指派垃圾郵件分數。In Microsoft 365 organizations with mailboxes in Exchange Online or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes, inbound messages go through spam filtering in EOP and are assigned a spam score. 該分數對應于個別垃圾郵件信賴等級, (SCL) 新增至 X 標頭中的郵件。That score is mapped to an individual spam confidence level (SCL) that's added to the message in an X-header. 較高的 SCL 表示郵件可能是垃圾郵件。A higher SCL indicates a message is more likely to be spam. EOP 會根據 SCL 對郵件採取動作。EOP takes action on the message based on the SCL.

下表說明 SCL 的含義和郵件所採取的預設動作。What the SCL means and the default actions that are taken on messages are described in the following table. 如需根據垃圾郵件篩選判定,可對郵件採取之動作的詳細資訊,請參閱在 EOP 中設定反垃圾郵件原則For more information about actions you can take on messages based on the spam filtering verdict, see Configure anti-spam policies in EOP.

SCLSCL 定義Definition 預設動作Default action
-1-1 郵件略過垃圾郵件篩選。The message skipped spam filtering. 例如,郵件來自安全寄件者、傳送至安全收件者,或是來自 IP 允許清單上的電子郵件來源伺服器。For example, the message is from a safe sender, was sent to a safe recipient, or is from an email source server on the IP Allow List. 如需詳細資訊,請參閱 在 EOP 中建立安全的寄件者清單For more information, see Create safe sender lists in EOP. 將郵件傳遞至收件者的收件匣。Deliver the message to the recipients' inbox.
0、10, 1 垃圾郵件篩選決定郵件不是垃圾郵件。Spam filtering determined the message was not spam. 將郵件傳遞至收件者的收件匣。Deliver the message to the recipients' inbox.
5,65, 6 垃圾郵件篩選標示郵件為 垃圾 郵件Spam filtering marked the message as Spam 將郵件傳遞至收件者的 [垃圾郵件] 資料夾。Deliver the message to the recipients' Junk Email folder.
9 9 垃圾郵件篩選標示郵件為 高信賴垃圾郵件Spam filtering marked the message as High confidence spam 將郵件傳遞至收件者的 [垃圾郵件] 資料夾。Deliver the message to the recipients' Junk Email folder.

您會注意到 SCL 2、3、4、7和8不是由垃圾郵件篩選使用。You'll notice that SCL 2, 3, 4, 7, and 8 aren't used by spam filtering.

您可以使用郵件流程規則(也稱為傳輸規則)) 來加蓋郵件上的 SCL 的 (。You can use mail flow rules (also known as transport rules) to stamp the SCL on messages. 如果您使用郵件流程規則來設定 SCL,則值5或6會觸發垃圾郵件的垃圾郵件篩選 動作,而 值7、8或9會觸發垃圾郵件篩選動作,以取得 高信賴的垃圾郵件If you use a mail flow rule to set the SCL, the values 5 or 6 trigger the spam filtering action for Spam, and the values 7, 8, or 9 trigger the spam filtering action for High confidence spam. 如需詳細資訊,請參閱使用郵件流程規則在郵件中設定垃圾郵件信賴等級 (SCL)For more information, see Use mail flow rules to set the spam confidence level (SCL) in messages.

類似 SCL,大量投訴層級 (BCL) 識別錯誤的大量電子郵件 (也稱為 灰色郵件) 。Similar to the SCL, the bulk complaint level (BCL) identifies bad bulk email (also known as gray mail). BCL 高,表示大量郵件訊息更容易引發抱怨 (因此更可能是垃圾郵件)。A higher BCL indicates a bulk mail message is more likely to generate complaints (and is therefore more likely to be spam). 您可以在反垃圾郵件原則中設定 BCL 閾值。You configure the BCL threshold in anti-spam policies. 如需詳細資訊,請參閱 設定 EOP 中的反垃圾郵件原則大量投訴層級 (BCL) ) ,以及 垃圾郵件和大量電子郵件有什麼不同?For more information, see Configure anti-spam policies in EOP, Bulk complaint level (BCL) in EOP), and What's the difference between junk email and bulk email?.

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