I have a Group Policy deployed in my environment for Outlook 2007 that does two things related to the Junk E-mail Safe Senders list:
1. Specifies the path to a text file located on the user's workstation that contains a simple list of domain names.
2. Flips the registry value JunkMailImportLists to "1" to tell Outlook to import the Safe Senders list each time it launches. The path to this value is: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Options\Mail
This configuration worked fine for a long time. Sometime in the past few months, I have no idea when, this stopped working.
I have Exchange 2010 and Office 2007 in my environment. I'm wondering if my upgrade to Exchange 2010 might be causing the Outlook client to behave differently, or if a patch Microsoft released for Outlook broke this functionality but either way: the text file I specify is no longer appended to Outlook's Safe Senders list anymore. It flat out ignores it. Regardless of what I put in the Safe Senders text file now, Outlook does not import the values.
The web is loaded with inconsistent information on how to configure a GPO for importing a Safe Senders list throughout an enterprise. I worked with Microsoft Premier on this configuration and it *did* work for months. I've set the JunkMailImportLists registry key which was missing from the original Office ADM file - a known bug. I've configured the proper path to the file, the file exists, and this issue happens on any profile on any workstation. So I'm at a loss here.
Before I call Premier, I wanted to know if anyone else has seen this behavior. When upgrading to Exchange 2010, did your import stop working? Has a patch broken this? Any other input?