Emails on my Exchange 2010 server do not have a SCL value or X-MS-Exchange-Organization-SCL: in the email header.

Does anyone know how to enable this so I can filter spam from my users


  • Do you have anti-spam enabled in your Exchange Organization? As far as I know there is no specific parameter to enable or disable the anti-spam stamps, they are there as soon as you enable antispam content filters – the-wabbit Feb 3 '12 at 10:51

You can set both SCL and headers using Transport Rules.

In the Exchange Management Console, there are under Organization Configuration -> Hub Transport.

For setting SCL, in the Actions step, you should flag set the spam confidence level to value. For headers, the flag is set header with value.

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You can use this cmdlet in the Exchange Management Shell.

Set-ContentFilterConfig -SCLQuarantineEnabled $true -SCLRejectEnabled $true -SCLDeleteEnabled $true -SCLQuarantineThreshold 5 -SCLRejectThreshold 6 -SCLDeleteThreshold 8 -QuarantineMailbox SpamQuarantineMailbox@contoso.com -RejectionResponse "Message rejected due to content restrictions" -BypassedRecipients user1@contoso.com,user2@contoso.com

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