EOP 中的垃圾邮件 (SCL) 级别Spam confidence level (SCL) in EOP

适用对象Applies to

重要

改进的 Microsoft 365 安全中心现已提供公共预览版。The improved Microsoft 365 security center is now available in public preview. 此新体验将 Defender for Endpoint、Defender for Office、365 Microsoft 365 Defender 等引入了 Microsoft 365 安全中心。This new experience brings Defender for Endpoint, Defender for Office 365, Microsoft 365 Defender, and more into the Microsoft 365 security center. 了解新增功能Learn what's new. 本主题可能同时适用于 Microsoft Defender for Office 365 和 Microsoft 365 Defender。This topic might apply to both Microsoft Defender for Office 365 and Microsoft 365 Defender. 请参阅 适用对象 部分,并查找本文中可能存在差异的特定标注。Refer to the Applies To section and look for specific call-outs in this article where there might be differences.

在具有 Exchange Online 邮箱或独立 Exchange Online Protection (EOP) 组织中没有 Exchange Online 邮箱的 Microsoft 365 组织中,入站邮件通过 EOP 中的垃圾邮件筛选,并分配有垃圾邮件得分。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. 该分数映射到添加到 X 标头中的 (SCL) 单个垃圾邮件可信度。That score is mapped to an individual spam confidence level (SCL) that's added to the message in an X-header. SCL 越高,邮件就越有可能是垃圾邮件。A higher SCL indicates a message is more likely to be spam. EOP 根据 SCL 对邮件采取操作。EOP takes action on the message based on the SCL.

下表介绍了 SCL 的含义以及对邮件执行的默认操作。What the SCL means and the default actions that are taken on messages are described in the following table. 有关可以基于垃圾邮件筛选裁定对邮件采取的操作详细信息,请参阅在 EOP中配置反垃圾邮件策略。For more information about actions you can take on messages based on the spam filtering verdict, see Configure anti-spam policies in EOP.


SCLSCL 定义Definition 默认操作Default action
-1-1 邮件跳过了垃圾邮件筛选。The message skipped spam filtering. 例如,邮件来自安全发件人、发送给安全收件人或来自 IP 允许列表上的电子邮件源服务器。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. 有关详细信息,请参阅在 EOP 中创建安全发件人列表For more information, see Create safe sender lists in EOP. 将邮件传递到收件人的收件箱。Deliver the message to the recipients' inbox.
0, 10, 1 垃圾邮件筛选确定邮件不是垃圾邮件。Spam filtering determined the message was not spam. 将邮件传递到收件人的收件箱。Deliver the message to the recipients' inbox.
5, 65, 6 垃圾邮件筛选将邮件标记为 "垃圾邮件"Spam filtering marked the message as Spam 将邮件传递到收件人的垃圾邮件文件夹。Deliver the message to the recipients' Junk Email folder.
9 9 垃圾邮件筛选将邮件标记为 高可信度垃圾邮件Spam filtering marked the message as High confidence spam 将邮件传递到收件人的垃圾邮件文件夹。Deliver the message to the recipients' Junk Email folder.

你会注意到,垃圾邮件筛选不会使用 SCL 2、3、4、7 和 8。You'll notice that SCL 2, 3, 4, 7, and 8 aren't used by spam filtering.

您可以使用邮件流规则 (传输规则) 标记邮件上的 SCL。You can use mail flow rules (also known as transport rules) to stamp the SCL on messages. 如果使用邮件流规则设置 SCL,则值 5 或 6 将触发 垃圾邮件 的垃圾邮件筛选操作,值 7、8 或 9 将触发高可信度垃圾邮件的垃圾邮件筛选 操作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. 有关详细信息,请参阅使用邮件 流规则在邮件中设置 (SCL) 垃圾邮件可信度For more information, see Use mail flow rules to set the spam confidence level (SCL) in messages.

与 SCL 类似,BCL 中的批量投诉级别 (BCL) 识别错误批量 (也称为灰色 邮件) 。Similar to the SCL, the bulk complaint level (BCL) identifies bad bulk email (also known as gray mail). BCL 越高,大量邮件产生投诉的可能性就越大(因此更有可能是垃圾邮件)。A higher BCL indicates a bulk mail message is more likely to generate complaints (and is therefore more likely to be spam). 您可以在反垃圾邮件策略中配置 BCL 阈值。You configure the BCL threshold in anti-spam policies. 有关详细信息,请参阅在EOP中配置反垃圾邮件策略、EOP ) 中的批量投诉级别 (BCL) 和垃圾邮件和批量电子邮件之间有什么区别?。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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