We use Microsoft Exchange 2000 Server Service Pack 2 (SP2) with Microsoft Outlook 2000. In this environment, can the system generate just one notification when someone posts one or more messages to a public folder?

The easiest way to direct the system to generate one notification after a person posts a message to a public folder is to write an event sink that fires when a message arrives in the public folder. You can write the sink to fire on specific conditions. For example, you can treat multiple messages arriving within a certain period (e.g., 10 minutes) as one message—that way, you receive only one notification.