Since upgrading from exchange 2003 to exchange 2010 the outlook 2007 has stopped showing the envelope in the system tray when new mails arrive. Alerts for tasks and calendar appointments have stopped popping up and the whole reminder system seems to not be functioning.
This appears to affect all users when using outlook 2007. If I logon to OWA I get popups and alerts using the web interface. Since the end users outlook hasnt changed, only the server software I am guessing there is something ive missed on the server causing this behaviour. Any ideas?