This issue occurs because the user interface text incorrectly states
Move messages with an SCL rating greater than or equal to in the
Store Junk E-mail Configuration area. This area is in the
Message Delivery options in Exchange System Manager. The user interface text should state "Move messages with an SCL rating greater than."
For example, the messages are not moved to the Junk E-mail folder of a mailbox if the following conditions are true:
- The SCL threshold is set to 9.
- You have custom weighting configured to force messages that contain specific words to also have a weight of 9