I am a network administrator running a domain that has one Exchange 2003 Server running as our email server. All clients are running Outlook 2007 for the email client. I have one customer as well as myself who are not receiving reminder notifications for meeting events created in the calender of Outlook. This service was working for me up to a few days ago when it stopped unexpectantly. When I create a test meeting, and set a notication reminder, the reminder does not appear at the time setup in the meeting event. What service or services are responsible in either Outlook or Exchange for the generation of these reminder popups? Any help you could offer would be most appreciated.