spam confidence level

The Exchange IMF evaluates message headers, content and other components of incoming mail and assigns an SCL ranking between zero and nine. An SCL of nine identifies a message that is almost certainly spam and an SCL of zero a message that is highly unlikely to be spam.

Read more about spam confidence level: - SearchExchange.com offers more information in their Crash Course: Exchange Intelligent Message Filter. - Microsoft explains SCL in more detail.

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