We recently upgraded to Exchange 2007 from 2003. Most of our clients are using Outlook 2003. We also are using Postini as a spam filter. Before the upgrade, users would often received legimate mail into their junk email folder, and I could never find a way to turn this off.
After upgrading to Exchange 2007, no users have any mail going into their junk mail folder, so now they're convinced something is wrong and that they are missing important emails that are lost somewhere.
Does anyone have any information on this? It's starting to get the attention of senior management too.