Install the Exchange tool

The Exchange Calendar Update Tool is available in the form of the self-extracting executable file Msextmz.exe.

After installation, the files in the installation directory should include the following files:

•	Msextmz.exe
•	Msextmzcfg.exe
•	Msextmz.ini This file is the master .ini file that documents all parameters that are used by Msextmz.exe.
•	Msextmzcfg.xml This file is the time zone mapping file that maps Outlook, CDO, and Outlook Web Access time zones to operating system time zones.

For more information about the latest version of the Exchange Calendar Update tool, click the following article number to view the article in the Microsoft Knowledge Base:

941018 (http://support.microsoft.com/kb/941018/) How to address daylight saving time by using the Exchange Calendar Update Tool

Versions of Exchange Server that are compatible with the Exchange tool

The Exchange tool can update mailboxes on the following versions of Exchange Server:

•	Microsoft Exchange Server 2007 Enterprise Edition
•	Microsoft Exchange Server 2007
•	Microsoft Exchange Server 2007 Standard Edition
•	Microsoft Exchange Server 2003
•	Microsoft Exchange Server 2003 Enterprise Edition
•	Microsoft Exchange 2000 Server
•	Microsoft Exchange Server 2003 Standard Edition
•	Microsoft Exchange 2000 Server Enterprise Edition
•	Microsoft Exchange 2000 Server Standard Edition

Operating systems that are supported by the Exchange tool

The Exchange tool will run on the following operating systems:

•	Microsoft Windows Server 2003
•	Microsoft Windows XP
•	Microsoft Windows 2000

Windows Vista is not supported as of September 7, 2007 update.

Confirm That You Set Public Folder Storage Limits Correctly in Exchange 2000

To confirm that you configured the public folder limits correctly:

1.	Change the generate warnings schedule to run constantly on the public folder store.
2.	Modify the permissions on a test public folder so that only you can add items to that public folder.
3.	Log on to Outlook as yourself, and then add postings and attachments to the public folders until you receive the warning messages. NOTE: It may take up to 15 minutes after you add the postings to receive the message.
4.	Add postings that have attachments that exceed the allowable size limit. These postings cannot be saved to the folder.

If you exceed the prohibit post limit, any messages that you send to the public folders are returned as undeliverable. After you confirm the public folder store limits, use the same procedure on a public folder on which you set individual limits.

To check for folder sizes in Outlook:

1.	Log on to the Outlook client computer.
2.	In the Folder List column, expand Public Folders, right-click All Public Folders, and then click Properties.
3.	Click the General tab, and then click Folder Size.

To check folder sizes in Exchange System Manager, click the Public Folders object under Public Folder Store (Servername) in the left pane. The mailboxes that are hosted on that store, their size, and the number of items that they contain are displayed in the right pane.

NOTE: After you finish testing, reset the schedule to generate warning messages.

Set Limits on Individual Public Folders in Exchange 2000

You can configure individual public folder limits on a folder that exists in the public folder store to override the store limits:

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 public folder store that you want to configure, and then double-click Storage group in the right pane.
4.	Expand the public folder store that you want to configure, and then click Public Folders. A list of the public folders that are hosted on the selected public folder store is displayed in the right pane.
5.	Double-click on the public folder that you want to configure, and then click the Limits tab. The Use public store defaults check box is selected and the public store limits are shaded, by default.
6.	Click to clear the Use public store defaults check box, and then configure the Issue warning at setting, the Prohibit post setting, and the Maximum Item setting to the limit (in KB) that is required on this public folder.
7.	Optionally, you can clear the Use public store defaults check box under Deletion Settings to configure different settings for deleted items on this public store.
8.	Click OK.

Set Limits on Public Folder Stores in Exchange 2000

You use a slightly different procedure to set limits on public folder stores than the procedure that you use to set limits on a mailbox store because you cannot set the prohibit send setting on a public folder.

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 public folder store that you want to configure, and then double-click Storage group in the right pane.
4.	Right-click the public folder 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: a. Issue warning at: Select this check box to warn the users that have public folder Owner or Folder Contact roles that their public folder has exceeded its limit. However, normal functioning of the public folder continues. b. Prohibit post at: Select this check box to prevent new messages from being posted to the folder if the folder reaches the size that you specify. c. Maximum item size: Select this check box to prevent anyone from posting messages that are larger than a certain size, regardless of how full the folder is. NOTE: Type the size value in KB for the majority of the public folders that are hosted in this store, for example, type 20,000 KB for the limit of a message-based public folder and type 100 KB for the Maximum item size setting.
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 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 setting 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. Deleted item retention time is more important on public folders, where items are deleted immediately and are not sent to the Deleted Items folder.
10.	After you finish configuring public folder store limits, click OK.

Plan Public Folder Limits in Exchange 2000

If you plan to use the public folders regularly, Microsoft recommends that you consider the maximum size of these folders, and then implement the limits before you make the folders available to users. This order is important for a number of reasons:

•	Messaging Application Programming Interface (MAPI) clients such as Microsoft Outlook can only use the default public folder tree, which is associated with the default public folder store in the first storage group that is created on each Exchange 2000 computer. If you want all of your public folders to be accessible over MAPI, you need to limit yourself to one public folder store for each server.
•	Although Exchange 2000 Enterprise edition removes the 16-gigabyte (GB) limit on an individual mailbox store, there are practical limits for backing up and restoring databases. Microsoft recommends that you use a 50-GB limit (approximately) for a single mailbox store.
•	Public folders are often used as archives; therefore, they tend to fill up eventually unless controls are implemented.
•	You can configure expiration policies on public folders to delete postings that are older than a certain age. However, this procedure is not appropriate for certain types of public folders, such as those folders that store contact details.
•	You may want to configure limits on a typical public folder that is used for simple posts to 20 megabytes (MB) and the limits on an archive folder to 100 MB. However, you may not want to configure limits on a Contacts folder (to make the space unlimited).
•	Like mailbox limits, you configure public folder limits on the public folder store; however, you can configure individual public folder limits to override the limits that you set on the store.
•	To perform an in-place restore, Microsoft recommends that your disks have at least as much free space as the size of the database itself plus at least 10 percent. For example, a 35-GB database runs on an 80-GB partition.
•	Remember that the deleted item retention time also affects the size of a public folder store because items are not actually deleted until after the deleted item retention time has expired.

Recover a Deleted Mailbox in Exchange

To Delete a Mailbox in Exchange

1.	Right-click the user in Active Directory Users and Computers.
2.	Click Exchange Tasks.
3.	Click Next on the Welcome page of the Exchange Task Wizard.
4.	Click Delete Mailbox.
5.	Click Next, click Next, and then click Finish.

The mailbox is now flagged for deletion and will be permanently deleted at the end of the mailbox retention period unless you recover it.

To Reconnect (or Recover) a Deleted Mailbox

1.	In Exchange System Manager, locate the mailbox store that contains the disconnected mailbox.
2.	Click the Mailboxes object under the mailbox store.
3.	If the mailbox is not already marked as disconnected (the mailbox icon appears with a red X), right-click the Mailboxes object, and then click Cleanup Agent.
4.	Right-click the disconnected mailbox, click Reconnect, and then select the appropriate user from the dialog box that appears.
5.	Click OK.

Note Only one user may be connected to a mailbox because all globally unique identifiers (GUIDs) are required to be unique across an entire forest.

To Reconnect a Deleted Mailbox to a New User Object

1.	In Active Directory Users and Computers, create a new user object. When you create the new user object, click to clear the Create an Exchange Mailbox check box. You will connect this user account to an already existing mailbox.
2.	Follow steps 1 through 4 in the preceding "To Reconnect (or Recover) a Deleted Mailbox" section.

To Configure the Mailbox Retention Period

1.	Right-click the mailbox store, and then click Properties.
2.	On the Limits tab, change the Keep deleted mailboxes for (days) default setting of 30 to the number of days you want.
3.	Click OK.

How to Confirm That You Set Mailbox Storage Limits Correctly

To confirm that the mailbox store limits work, change the generate warnings schedule to run constantly, create a dummy user account and mailbox, and then add messages to that mailbox until the warning messages are displayed. You may receive the warning message up to 15 minutes after you have added the messages. After you exceed the Prohibit send and receive setting, any messages that you send to the test account are returned as undeliverable.

After you confirm the mailbox store limits, configure different mailbox limits for the test user, log off Outlook, and then log on again. The mailbox receives mail again.

NOTE: To check for folder sizes in Outlook:

1.	Log on to the Outlook client computer.
2.	In the Folder List column, right-click Outlook Today, and then click Properties for Mailbox (User Name).
3.	Click the General tab, and then click the Folder Size.

To check folder sizes in Exchange System Manager, click the Mailboxes object under Mailbox Store (Servername) in the left pane. The mailboxes that are hosted on that store, their size, and the number of items that they contain are displayed in the right pane.

NOTE: After you finish testing, reset the schedule to generate warning messages.

Troubleshooting

If you configure storage limits, note that the mailbox limits are measured in KB and not megabytes (MB). If you do not make this distinction, you may type 100 KB instead of 100,000 KB as the mailbox limit.