How to Set Limits on a Mailbox Store

To set limits on a mailbox store:

1.	Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
2.	In the left pane, expand the Exchange 2000 hierarchy until you find the Servers container. If an Administrative Groups container is displayed, the Servers container is under the respective administrative group.
3.	Expand the Servers container, click the server that hosts the mailbox store that you want to configure, and then double-click Storage group in the right pane.
4.	Right-click the mailbox store that you want to configure, click Properties, and then click the Limits tab.
5.	Click to select one or all of the following check boxes under Storage limits: • Issue warning at: Select this check box to warn the user that their mailbox has exceeded its limit. However, normal functioning of the mailbox continues. • Prohibit send at: Select this check box to send a warning message that states that the user will not be able to send any more messages until they delete or archive their old mail. However, users can still receive messages. NOTE: Type a value (in kilobytes [KB]) for the size of the mailbox, for example, 100,000 KB for normal users or 200,000 KB for the power users. • Prohibit send and receive at: Select this check box to send a warning message that states that the user has exceeded mailbox limits. If the user receives this message, the user cannot receive any messages. NOTE: Type a value (in kilobytes [KB]) for the size of the mailbox, for example, 100,000 KB for normal users or 200,000 KB for the power users. If you have a limit of 100,000 KB on the mailbox, set the Prohibit send at setting to 110,000 KB and the Prohibit send and receive at setting to 120,000 KB. However, if 100, 000 KB really is the limit that you can give everyone, set the Issue warning at setting to 90,000 KB, the Prohibit send at setting to 95,000 KB, and the Prohibit send and receive at setting to 100,000 KB.
6.	Either click the time that you want the warning messages to be generated in the Warning message interval box or click Customize.
7.	If you click Customize, either click a day in the left column, and then click a time on the top row or click and hold the mouse button as you sweep across the time slots to configure warning settings. NOTE: To configure the schedule to be displayed in hour slots or in 15-minute slots, click the appropriate option under Detail View.
8.	After you configure the warning message interval times, click OK.
9.	If you want maximum control of your database sizes, configure the Keep deleted items for (days) setting to 0. Otherwise, Microsoft recommends that you a configure this setting to 7 days.