Accept List Configuration
Finally, for those discovering IP Accept lists for the fist time, here is a configuration walkthrough.
From the Exchange System Manager open the properties for Global Settings | Message Delivery.
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Select the Connection Filtering property page.
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Click on the Accept button
Click on the Add button to specify the IPs for hosts whose emails are to be accepted without further Connection Filtering or IMF processing.
Save and close all dialogs.
Next enable Connection Filtering at each SMTP Virtual server where the Accept list is to be enforced:
Browse the left pane tree and open the properties for:
<Organization> | Servers | <Exchange Server> | Protocols | SMTP | <SMTP Virtual Server>
From the General property sheet click on Advanced.
In the Advanced dialog that opens select the IP on which Connection Filtering is to be enabled and click on the Edit button.
Set the 'Apply Connection Filter' checkbox.
Save changes.