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Why isn't IMF Tune processing any emails?

You need to make sure that the Content Filter/IMF is enabled at Exchange and also that IMF Tune is enabled at the configuration.

The filter enablement procedure varies depending on the Exchange version and the SP level. Thus make sure to follow the procedure matching your current Exchange installation.

Enabling the Content Filter - Exchange 2007/2010

The Content Filter forms part of a set of anti-spam transport agents that ship with Exchange 2007/2010. These must be run on a server having the Edge or Hub transport server role. The Edge server installation includes the anti-spam agents out of the box. The same applies to Small Business Server (SBS) 2008. However in case of Hub Transport servers (except for SBS), the agents must be installed manually through the command shell.

The installation script is located under:
<Exchange Server dir.>\Scripts\install-AntispamAgents.ps1

1. On the Hub transport server machine, from the Exchange 2007/2010 program group, open the Exchange Management Shell.

2. Change directory to: <Exchange Server dir.>\Scripts\

3. Run> .\install-AntispamAgents.ps1

4. Restart the MS Exchange Transport service

With the Anti-spam agents installed open the Exchange Management Console. Next, depending on the server type, select:
Microsoft Exchange | Edge Transport | Anti-Spam OR
Microsoft Exchange | Organization Configuration | Hub Transport | Anti-Spam

From here make sure that Content Filtering is set to Enabled. If not enabled, right-click the Content Filter entry and select 'Enable'.

Enabling IMF - Exchange 2003 SP2

1. Open the Exchange System Manager

2. Browse the left pane tree and open the properties for:
   <Organization> | Servers | <Exchange Server> | Protocols | SMTP | <SMTP Virtual Server>

   Note that <Exchange Server> is effectively the name of the Exchange Server where the Intelligent Message Filter is installed.

   

3. From the General property sheet click on Advanced.

   

4. In the Advanced dialog that opens select the IP on which IMF is to be enabled and click on the Edit button.

   

5. Set the 'Apply Intelligent Message Filter' checkbox.

   

6. Save changes.

Enabling IMF - Exchange 2003 SP1 and Earlier

1. Open the Exchange System Manager.

2. Browse the left pane tree and open the properties for:
   <Organization> | Servers | <Exchange Server> | Protocols | SMTP | Intelligent Message Filtering

   Note that <Exchange Server> is effectively the name of the Exchange Server where the Intelligent Message Filter is installed.

   

3. The property sheet will show the list of virtual servers for the local Exchange Server on which IMF may be enabled. Tick the checkbox next to the virtual servers.

   

4. Click OK to save changes.

Enabling IMF Tune

1. Open the IMF Tune configuration.

2. Under the Miscellaneouse category make sure the 'Disable IMF Tune' checkbox is cleared and click OK to save changes.