We just upgraded the whole office (130-140 users or so) to Office 2010 from Office 2000/2003, and now we're finding that the Outlook Sniffer is no longer operating. Users who receive meeting requests are not seeing those meetings tentatively in their calendars until they open the meeting request. This functionality worked fine before the upgrade (we were specifically using Word/Powerpoint/Excel 2000 and Outlook 2003). We are using Exchange 2003 in conjunction with Outlook 2010.
How can we fix this issue?