Topic Last Modified: 2009-03-11

The Microsoft Exchange Analyzer Tool queries the Exchange environment for the presence of Exchange Server 2007 Hub Transport or Mailbox server roles.

If Exchange Analyzer finds either Exchange Server 2007 Hub Transport or Mailbox server roles, the tool executes the Get-OrganizationConfig cmdlet to query for the value of the SCLJunkThreshold parameter for the Exchange organization.

The SCLJunkThreshold parameter for an organization specifies the Spam Confidence Level (SCL) at which a message is moved to the Junk E-mail folder.

If Exchange Analyzer determines that the SCLJunkThreshold parameter for an organization is set to the default value of 8, Exchange Analyzer generates the following best practices message:

Junk Store threshold is currently configured to move messages to recipient's Junk folder when they have a Spam Confidence Level (SCL) value of 8 This is the default value for the Junk Store threshold. However, the recommended value is 4. You can configure SCL thresholds by using the Set-ContentFilterConfig cmdlet in the Exchange Management Shell

This message indicates that the SCL threshold for moving messages to the Junk E-mail folder may be set too high. The default SCL level is intended to minimize the number of legitimate e-mail messages that get routed to a user's Junk E-mail folder. However, when the default SCL is used, more unsolicited commercial e-mail (UCE), also known as spam, is sent to a user's Inbox folder. The recommended value for the SCLJunkThreshold parameter is 4.

To address this issue, use the Set-OrganizationConfig cmdlet in the Exchange Management Shell to set the value of the SCLJunkThreshold parameter to 4.

To set the value of the SCLJunkThreshold parameter to 4 using the Set-OrganizationConfig cmdlet

• Use a Set-OrganizationConfig command that resembles the following:

  Set-OrganizationConfig -SCLJunkThreshold 4

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