7.1 Managing mailbox-enabled users | Monitoring and Managing Microsoft Exchange Server 2003 (HP Technologies)

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A mailbox-enabled user is a Windows user who has a mailbox in an Exchange message store. A mailbox-enabled user has an e-mail address and can both send and receive e-mail using Exchange. Management of mailbox-enabled users is completely integrated with Windows user management, using Active Directory Users and Computers. When you install Exchange, the installation process extends the standard Active Directory Users and Computers to support Exchange attributes. The extensions automatically ask for Exchange information whenever a new Windows account is created, and they automatically display Exchange property pages when you view the user's Windows account.

7.1.1 Creating a mailbox-enabled user account

The following procedure can be used to simultaneously create a Windows user account and make it mailbox-enabled:

Start the Active Directory Users and Computers from the Windows Start menu by selecting All Programs →Microsoft Exchange →Active Directory Users and Computers.
Right-click on Users and select New →User to display the New Object - User dialog box (Figure 7.1).

Figure 7.1: New Mailbox-enabled User - Name dialog box
Enter the user's given name, initials, and surname into the First name, Initials, and Last name fields. Windows will automatically fill in the Full name field by combining the First name, Initials, and Last name fields. You can override this value if necessary.
In the User logon name field, enter the user's Windows logon name. The Windows account will be given Owner permission on the mailbox, meaning the user has full permission to send and receive mail from this mailbox.
Windows automatically sets the User logon name (pre-Windows 2000) field to the same value as the User logon name field. You can override this value if necessary.
Select Next to display the password dialog box (Figure 7.2).

Figure 7.2: New Mailbox-enabled User - Password dialog box
Enter information about the user's password, confirm the new password by retyping it, and select the password options that apply. Select Next to continue.
Select the Create an Exchange mailbox check box to automatically create an Exchange mailbox using the alias, Exchange server, and Information Store shown in the Alias, Server, and Mailbox Store fields (Figure 7.3). If you clear the Create an Exchange mailbox check box, the Windows account will be created as a mail-enabled user rather than a mailbox-enabled user.

Figure 7.3: New Mailbox-enabled User - Mailbox dialog box
The Alias field is automatically set to the user's Windows logon name. You can override this value if necessary.
The Server field lists the Exchange server where this user's mailbox will be stored. You can use the drop-down list to select another Exchange server.
The Mailbox Store field lists the mailbox store where the user's mailbox will be created. You can use the drop-down list to select another mailbox store.
Select Next to display a dialog box summarizing the information you entered (Figure 7.4).

Figure 7.4: New Mailbox-enabled User - Summary dialog box
Verify that the information is correct, then select Finish to create the Windows account and associated Exchange mailbox. Select Back if you need to correct any information.

The Windows new user process is simple and quick. Unfortunately, however, it collects only a minimal amount of information. The information is enough to allow the user to send and receive e-mail, but it does not include any of the additional information needed to produce a fully populated default Global Address List (GAL) entry for the user. The minimal information is also typically inadequate to effectively generate e-mail addresses or create custom address lists on the basis of user attributes such as location or department. You can enter this additional information only by modifying the user's Windows account once it has been created. (See Section 7.1.3 for more information on modifying accounts.)

7.1.2 Designating an existing user as mailbox-enabled

When you create accounts for your Windows users, you may have chosen not to create Exchange mailboxes for all of your users. Perhaps they did not need e-mail access at the time. You can use the following procedure to easily designate an existing Windows user as mailbox-enabled:

Start the Active Directory Users and Computers from the Windows Start menu by selecting All Programs →Microsoft Exchange →Active Directory Users and Computers.
Expand the Users section.
In the Details pane, right-click the user you want to modify and select Exchange Tasks to start the Exchange Task wizard.
The Exchange Task wizard will display a list of Exchange-specific tasks that can be applied to the user account. Select Create Mailbox, then select Next to continue (Figure 7.5).

Figure 7.5: Exchange Task wizard
The wizard automatically sets the Alias field to the user's Windows logon name. You can override this value if necessary.
The Server field lists the Exchange server and storage group where this user's mailbox will be stored. You can use the drop-down list to select another Exchange server/storage group.
The Mailbox Store field lists the mailbox store where the user's mailbox will be created. You can use the drop-down list to select another mailbox store.
Select Next to create the Exchange mailbox for this Windows user.

7.1.3 Modifying a mailbox-enabled user account

All Active Directory objects and properties-including those added by Exchange-are managed using Active Directory Users and Computers. Exchange users are just Windows users with an Exchange mailbox. The Exchange properties associated with a user are just additional property tabs for the Windows user.

There are many property pages for each Windows user. However, only a handful of these property pages are needed to manage Exchange. These property pages fall into two categories.

One type of property pages have settings that allow you to tailor the user's Exchange capabilities. This includes items such as protocol settings, mailbox rights, mailbox information store, delivery restrictions, delivery options, and storage limits.
The other type of property pages contain information that is useful for identifying the user in the GAL. This includes information such as name, addresses, office, telephone numbers, department, title, company, and manager's name. This type of information is required if you want to generate e-mail addresses or create custom address lists on the basis of attributes such as location or department.

You can use the following procedure to modify an existing mailbox-enabled user's properties.

Start the Active Directory Users and Computers from the Windows Start menu by selecting All Programs →Microsoft Exchange →Active Directory Users and Computers.
Expand the Users section.
In the details pane, right-click the user you want to modify and select Properties.
E-mail Addresses tab Select the E-mail Addresses tab (Figure 7.6). The E-mail Addresses tab is used to maintain alternate e-mail addresses for this user. You can have multiple e-mail addresses of the same type. For example, you can assign two Simple Mail Transfer Protocol (SMTP) addresses to the user. If you have multiple addresses for an address type, the primary address appears in boldface type.

Figure 7.6: User Properties - E-mail Addresses tab
To change an e-mail address for a mailbox-enabled user, double-click the address you want to modify to display the Address Properties dialog box (Figure 7.7). This dialog box is specific for the type of address you are adding.

Figure 7.7: Internet Address Properties

In the Address Properties dialog box, change the e-mail address information, then select OK to return to the E-Mail Addresses tab (see Figure 7.6).
You can add new e-mail addresses for the mailbox-enabled user. To add a new e-mail address, select the New button to display a list of the e-mail address types you can add. The available choices are X.400 address, Microsoft Mail address, SMTP address, cc:Mail address, Lotus Notes address, Novell GroupWise address, and custom address. If you have installed other third-party products, such as fax connectors, additional e-mail address types may be listed. Select the type of address you want to add, then select OK. The system will display an Address Properties dialog box that is specific for the type of address you are adding. In the Address Properties dialog box, enter the information required by the address type you selected. Select OK to return to the E-Mail Addresses tab.
When the recipient no longer needs a particular address, you can remove the unnecessary address by selecting the e-mail address and then selecting the Remove button. You can remove any address except for the primary SMTP address, because all recipients must have at least one SMTP address. To remove the primary SMTP address, you must first designate another SMTP address as the primary one.
You can have multiple e-mail addresses of the same type. For example, you can assign two SMTP addresses to some users, and external Internet users could address e-mail to these users using either of their SMTP addresses. However, when a user sends an e-mail message, the primary address is the one that will appear in the From field.

If you have multiple addresses for an address type, the primary address appears in boldface type. To change the primary address, select the new primary address and select Set as Primary. The new primary address appears in boldface type.
A user's e-mail addresses are automatically generated according to the recipient policies. This keeps you from having to manually enter e-mail addresses for each of your users. However, you may have a small number of users who are exceptions to the address generation rules defined by the recipient policies. For these exceptions, you will need to manually enter their e-mail addresses and clear the Automatically update e-mail addresses based on recipient policy check box to prevent the recipient policies from updating the user's addresses.
Exchange General tab Select the Exchange General tab to display information about delivery restrictions, delivery options, and storage limits (Figure 7.8).

Figure 7.8: User Properties - Exchange General tab
Select the Delivery Restrictions button to specify the maximum size of incoming and outgoing messages and the users from whom mail should be accepted or rejected (Figure 7.9).

Figure 7.9: Delivery Restrictions dialog box
You can use the Sending message size options to specify the maximum acceptable size for this user's outgoing messages. Select Maximum KB and enter a value into the associated field to prevent very large messages [e.g., greater than 5000 KB (5 MB)] from degrading server performance and message throughput.
You can use the Receiving message size options to specify the maximum acceptable message size that this user can receive. Select Maximum KB and enter a value into the associated field to specify a limit for this user. Select Use default limit to use the default maximum size as defined in the Message Delivery Properties in the Global Settings section of the Exchange System Manager console.
You can use the Message restrictions options to control the users from whom this recipient can accept e-mail messages.

Select the From authenticated users only check box to allow the user to accept messages only from authenticated users.

Select From everyone if you do not want to place restrictions on who can send e-mail to this user. By default, mailbox-enabled users can accept messages from anyone.

Alternatively, you can set restrictions so that e-mail will be accepted only from a specific set of users. To list specific users who can send e-mail to this user, select Only from. Then select the Add button to display the Select Recipient dialog box. In the Select Recipient dialog box, select those users who will be allowed to send e-mail to this recipient. When you have identified these users, select OK to return to the Delivery Restrictions dialog box.

You also can elect to allow messages to be accepted from everyone except a specific set of users. To list specific users who will not be allowed to send e-mail to this user, select From everyone except. Then select the Add button to display the Select Recipient dialog box. In the Select Recipient dialog box, select those users who will not be allowed to send e-mail to this recipient. When you have identified these users, select OK to return to the Delivery Restrictions dialog box.
Select OK to return to the Exchange General tab.
Select the Delivery Options button to grant Send on behalf permissions, to set a forwarding address, or to set recipient limits (Figure 7.10).

Figure 7.10: Delivery Options dialog box
In most typical corporate environments, high-level managers often have administrative assistants who are asked to send e-mail messages on behalf of the managers. To delegate sending privileges to an administrative assistant or to another user, select Add to display the Select Recipient dialog box. In the Select Recipient dialog box, select those users who will be granted Send on behalf permissions for this user. When you have identified these users, select OK to return to the Delivery Options dialog box.
You can automatically forward all of this user's incoming messages to another user by selecting Forward to and then selecting Modify to display the Select Recipient dialog box. In the Select Recipient dialog box, select the forwarding address (i.e., select the recipient who will receive this user's e-mail). When you have identified the forwarding address, select OK to return to the Delivery Options dialog box.
You also can select the Deliver messages to both forwarding address and mailbox check box to have forwarded messages delivered to both the forwarding address and the user's mailbox.
You can use the Recipient limits options to restrict the number of recipients that this user can include on a single e-mail message. Select Maximum recipients and enter a value into the associated field to limit the number of recipients. If a user attempts to send a message that exceeds the specified maximum number of recipients, the message will be returned to the user as undeliverable. Select Use default limit to use the default limit as defined in the Message Delivery Properties in the Global Settings section of Exchange System Manager console.
Select OK to return to the Exchange General tab.
Select the Storage Limits button to control the information storage limits and deleted item retention for the user's mailbox (Figure 7.11).

Figure 7.11: Storage Limits dialog box
You can use the Storage limits options to manage the user's mailbox store. These limits do not apply to Personal Information Stores (i.e., PST files); they apply only to messages stored in the mailbox store. Select the Use mailbox store defaults check box to use the default storage limits as defined on the Limits tab of the Mailbox Store Properties. Exchange expects you to enter these limits in terms of KB, rather than MB. So, if you want to specify a 5-MB limit, you would enter 5000 KB.

To define specific limits for this user, first clear the Use mailbox store defaults check box. Select the Issue warning at (KB) check box and enter a value into the associated field to specify the maximum size that the user's mailbox can reach before a warning message is sent to the user.

Select the Prohibit send at (KB) check box and enter a value into the associated field to specify the maximum size that the user's mailbox can reach before Exchange will no longer allow the user to send messages. The user will not be allowed to send messages until enough messages are deleted to decrease the storage size to less than the limit. The value you specify here must be greater than the value you entered for Issue warning at (KB).

Select the Prohibit send and receive at (KB) check box and enter a value into the associated field to specify the maximum size that the user's mailbox can reach before Exchange will no longer allow the user to send or receive messages. The value you specify must be greater than the value you entered for Prohibit send at (KB).
When a user deletes a message, it is moved into the user's Deleted Items folder. When the Deleted Items folder is emptied, the deleted messages continue to be retained in the Information Store for a specified time before they are permanently deleted. These deleted items are marked as hidden until they are permanently deleted from the Private Information Store when the retention period expires. Until the retention time period expires, users can recover their own deleted items by using Outlook's Recover Deleted Items command. This process greatly reduces requests for the Exchange administrator to recover deleted items from backup tapes. Of course, retaining deleted items requires disk space, so you must make an educated compromise between user convenience and system resources. (Items in the deleted item retention do not count against the user's storage limits.)

You can use the Deleted item retention options to specify the number of days that the user's deleted items are kept before they are permanently deleted. Select the Use mailbox store defaults check box to use the deleted item retention limits defined on the Limits tab of the Mailbox Store Properties.

To define a specific retention period for this user, first clear the Use mailbox store defaults check box. Then, enter a value into the Keep deleted items for (days) field. If mailbox-enabled users do not permanently delete a deleted item, it will be stored on the server for the specified number of days before Exchange permanently deletes it. To prevent deleted items from being permanently deleted before they are backed up, select the Do not permanently delete items until the store has been backed up check box.
Select OK to return to the Exchange General tab.
Select the Exchange Advanced tab (Figure 7.12).

Figure 7.12: User Properties - Exchange Advanced tab
Exchange Advanced tab Exchange sends the simple display name to other e-mail systems that cannot understand any non-ANSI characters you may have used in the user's normal display name. To set a simple display name, enter the name into the Simple display name field. The name should include only ANSI characters.
By default, all recipients are listed in Exchange address lists. However, there are two common reasons for hiding a user's mailbox.
- To avoid receiving large quantities of unsolicited e-mail, some key individuals, such as the company CEO, may not want their names listed in the Exchange address lists.
- When an employee leaves the company, hiding the mailbox for a period is preferable to deleting the mailbox because deleted mailboxes are difficult to recreate.
You can select the Hide from Exchange address lists check box to prevent-this recipient from appearing in address lists. You cannot select the address lists in which the recipient will be listed. If you select this check box, the recipient will be hidden from all address lists. This discourages but does not prevent users from sending mail to the hidden user. Mail can still be sent to the recipient if the sender types the address into the To field rather than selecting the name from an address list.
For mailbox-enabled users, you can automatically downgrade e-mail that is set for high-priority delivery to an X.400-type e-mail address. This downgrade causes the outbound e-mail to conform to 1984 X.400 standard. Select the Downgrade high priority mail bound for X.400 check box to automatically downgrade high-priority e-mail.
Exchange maintains hundreds of attributes for each recipient, including names, addresses, and telephone numbers. However, every company has specific needs that cannot be met by the standard recipient attributes. For example, there is no standard attribute for recording an employee badge number or a spouse's name. To record this type of company-specific information, Exchange has 15 custom attributes (named extensionAttribute1 through extensionAttribute15) that you can customize to meet your company's needs.

To enter company-specific information, select the Custom Attributes-button to display the Exchange Custom Attributes dialog box. In the Exchange Custom Attributes dialog box, select the attribute ( extension Attribute1 through extensionAttribute15) you want to change and then select Edit. Enter a value for the custom attribute and select OK to return to the Exchange Custom Attributes dialog box. Select OK to return to the Exchange Advanced tab of the Properties dialog box.
You can use the Internet Locator Service (ILS) to provide information about your users to the managers of websites that your users visit. Sharing this information facilitates communication between website managers and users. If you want to share this information, select the ILS Settings button to display the Exchange ILS dialog box. In the ILS Server field, enter the name of the server to which this user is connected. In the ILS Account field, enter the user's account name. Select OK to return to the Exchange Advanced tab of the Properties dialog box.
Select the Mailbox Rights button to set mailbox permissions for the user or to assign mailbox permissions to another user (Figure 7.13).

Figure 7.13: Mailbox Rights dialog box
In the Group or user names pane, select the user or group to which you want to assign permissions. If the user or group does not appear in the list, select Add to add users to the list.

The selected user's or group's current permissions are indicated in the Permissions pane. The permissions currently granted to the selected user have the Allow check box marked. Permissions that are denied to this user have the Deny check box marked. If the permissions for this object are inherited from parent objects, the check box is shaded. Inherited permissions can only be changed at the parent object where the permission is defined. You should only use the Deny check box with careful consideration because it can have an unintended-and difficult to diagnose-effect on inheritance of permissions.

One of the following steps can be used to change permissions:
- If the permission is not inherited from a parent object, select or clear the Allow or Deny check boxes for the permissions you want to grant or deny this user or group.
- If the permission is inherited, change the permission at the parent object where it is defined.
To change the permissions granted to the mailbox-enabled user (i.e., the owner of the mailbox), select SELF in the Group or user names pane. Then select the Allow or Deny check box next to the permission you want to change.

To allow another user to access this user's mailbox, select Add and select the other user or group in the Group or user names pane. Then grant the appropriate permissions to allow the user to access the mailbox. For read-only access, select Read permissions permission. For full access, select Full mailbox access.
Select OK to return to the Exchange Advanced tab of the Properties dialog box.
Exchange Features tab Select the Exchange Features tab to enable or disable Exchange features, such as mobile services, Outlook Web Access, Post Office Protocol 3 (POP3), and Internet Mail Access Protocol 4 (IMAP4) (Figure 7.14).

Figure 7.14: User Properties - Exchange Features tab
To enable or disable Exchange features, select a feature and then select either Enable or Disable. For most of the Exchange features, you are limited to enabling or disabling the feature. However, POP3 and IMAP4 also allow you to view properties.
POP3 is an Internet standard messaging protocol that allows a client system to download e-mail from the user's server-based Inbox. POP3 does not allow the user to maintain folders on the server and does not support public folder access. To configure the default POP3 settings, select POP3 and then select the Properties button to display the POP3 protocol dialog box (Figure 7.15).

Figure 7.15: Post Office Protocol 3 protocol dialog box
Select the Use protocol defaults check box to use the default protocol as defined on the Message Format tab of the Default POP3 Virtual Server Properties.
To define specific POP3 settings for this user, first clear the Use protocol defaults check box. Use the Message encoding options to determine how message contents are sent to the POP3 client. Select Provide message body as plain text to send messages as text only, with no special formatting (e.g., no bolding, italics, underlining, or color). Graphics and active links are replaced with text descriptions. Select Provide message body as HTML to send a more fully formatted representation of the message. Select Both to send both Plain Text and HyperText Markup Language (HTML) formats in a Multipurpose Internet Mail Extension (MIME) multipart message.
Select UUEncode if you want to use UNIX-to-UNIX encoding ( UUEncode) to convert binary files into printable 7-bit ASCII characters. Select the Use BinHex for Macintosh check box to convert incoming uuencoded messages into BinHex for Macintosh.
Use the Default character set drop-down list to select the character set to use with older Messaging Application Programming Interface (MAPI) clients, such as Outlook 97. This allows you to support multiple languages using Windows character sets rather than standard Internet character sets. This option only affects Outlook 97 or earlier versions. Exchange automatically handles character sets used by more recent versions of Outlook.
Select the Use Microsoft Exchange rich-text format check box to send Exchange Rich Text Format messages to the POP3 client. If the POP3 client understands Exchange Rich Text Format, the user will be able to view the message. Clients that do not understand Exchange Rich Text Format will include the content in an attachment. If you elect to use the Exchange Rich Text Format, you cannot provide the message body as HTML; you must select Provide message body as plain text.
Select OK to return to the Exchange Features tab.
IMAP4 is an Internet standard messaging protocol. Unlike POP3, IMAP4 allows a client system to access server-based messages without having to download them to the client system. IMAP4 users can access messages stored in their server-based folders and can access public folders. To configure the IMAP4 settings, select IMAP4 and then select the Properties button to display the IMAP4 protocol dialog box (Figure 7.16).

Figure 7.16: Internet Mail Access Protocol 4 dialog box
The protocol settings are used to determine how MAPI messages are converted when retrieved by the IMAP4 client. Select the Use protocol defaults check box to use the default protocol as defined on the Message Format tab of the Default IMAP4 Virtual Server Properties.
To define specific IMAP4 settings for this user, first clear the Use protocol defaults check box. Use the MIME encoding options to determine how message contents are sent to the IMAP4 client. Select Provide message body as plain text to send messages as text only, with no special formatting (e.g., no bolding, italics, underlining, or color). Graphics and active links are replaced with text descriptions. Select Provide message body as HTML to send more fully formatted representation of the message. The HTML message format will include formatted text, as well as graphics and active links. Select Both to send both Plain Text and HTML formats in a MIME multipart message. If the IMAP4 client does not support HTML, it will default to the text version of the message. The disadvantage of sending both formats is the increased message size.
Use the Default character set drop-down list to select the character set to use with older MAPI clients, such as Outlook 97. This allows you to support multiple languages using Windows character sets rather than standard Internet character sets. This option affects only Outlook 97 or earlier versions. Exchange automatically handles character sets used by more recent versions of Outlook.
Select the Use Microsoft Exchange rich-text format check box to send Exchange Rich Text Format messages to the IMAP4 client. If the IMAP4 client software understands Exchange Rich Text Format, the user will be able to view the message. Clients that do not understand Exchange Rich Text Format will include the content in an attachment named winmail.dat. If you elect to use the Exchange Rich Text Format, you cannot provide the message body as HTML; you must select Provide message body as plain text.
Select the Include all public folders when a folder list is requested check box to include public folders when the user requests a folder list. This is the default. If you clear this option, Exchange will include only the user's private folders in the list. Clearing the option can be used to improve performance for clients experiencing problems listing a large number of folders.
When Exchange sends messages to the IMAP4 client, it also calculates and sends the exact size of the message. If the IMAP4 client does not require exact message sizes, you can select the Enable fast message retrieval check box to improve performance by sending approximate message sizes.
Then select OK to return to the Exchange Features tab.
General, Address, Telephones, and Organization tabs The General, Address, Telephones, and Organization tabs include information that is useful for identifying the user in the GAL, for generating custom e-mail addresses, or for creating custom address lists. Much of this information is optional (i.e., Windows and Exchange will not cease to operate if the information is unavailable). However, this optional information is beneficial to users trying to differentiate between two users with similar names. The value of the GAL is directly related to the accuracy and completeness of the information entered by the administrator. Ideally, the information in the GAL should negate the need for any other form of employee address or telephone list.
If you plan to create custom address lists on the basis of department, location, or other attributes, you must enter information into these fields in a consistent manner. For example, if you sometimes enter state information using a two-character abbreviation and sometimes enter the full state name, generating location-based address lists will be very difficult.

Similarly, you must determine the exact spelling for department names, city names, office names, and other potential selection criteria for address lists.

To assist your users, to facilitate generating e-mail addresses, and to facilitate creating address lists on the basis of user attributes, you should always enter as much of the information shown in Table 7.1 as possible.

Table 7.1: General, Address, Telephones, and Organization Tabs
Property Tab	Field	Description
General	First name	Enter the user's first name.
	Initials	Enter middle initials, if any.
	Last name	Enter the user's last name.
	Display name	This name will appear in the Exchange Global Address List. In some circumstances, you may wish to change or enhance the default display name to clearly identify the user. For users with similar names, it is often beneficial to append the user's location or department to the default display name. For example, Smith, John [Kentucky] Smith, John [Missouri]
	Description	This field can be used for any descriptive information about the user.
	Office	Enter the user's office.
	Telephone number	Enter the user's primary telephone number. You can use the Other button to enter additional telephone numbers for the user.
	E-mail	This is the user's e-mail address.
	Web page	If the user has a personal web page, the Uniform Resource Locator (URL) can be entered in this field.
Address	Street	Enter the user's street address.
	P.O. Box	This is the user's post office box.
	City	Enter the user's city.
	State/Province	Enter the user's state. Be consistent; always use either full state name or abbreviations.
	Zip/Postal Code	Enter the user's postal code.
	Country/Region	Enter the user's country. Be consistent; always use either full country name or always use ISO country codes.
Telephones	Home, Pager, Mobile, Fax, IP phone	Enter the user's telephone numbers. These phone numbers are optional. However, if you maintain the information, the Global Address List can serve as a corporate telephone directory.
Organization	Title	Enter the user's title.
	Department	Enter the user's department. Be consistent.
	Company	Enter the user's company. Be consistent.
	Manager	Select the Change button to enter the user's manager. This will also automatically add the user to the manager's list of direct reports.
	Direct reports	These are the user's direct reports. Names are added to the list by modifying the Manager field for each of the manager's direct reports.

7.1.4 Moving a mailbox

As your user base grows and as users move from one location to another, you may find it necessary to move an existing user's mailbox to adjust server workload. You can use the following procedure to move an Exchange mailbox from one Exchange server to another or from one mailbox store to another.

Start the Active Directory Users and Computers from the Windows Start menu by selecting All Programs →Microsoft Exchange →Active Directory Users and Computers.
Expand the Users section.
In the details pane, right-click the user you want to move, and select Exchange Tasks to start the Exchange Task wizard.
The Exchange Task wizard will display a list of Exchange-specific tasks that can be applied to the user account. Select Move Mailbox and then select Next to continue.
The Exchange Task wizard will display the current location of the user's mailbox, along with a possible new location for the mailbox (Figure 7.17). The Server and Mailbox Store fields list the Exchange server and mailbox store where the user's mailbox will be moved. You can use the drop-down lists to select another Exchange server or another mailbox store. When you are satisfied with the new mailbox location, select Next to continue.

Figure 7.17: Move Mailbox wizard
The Exchange Task wizard will display a screen asking how you would like for the wizard to handle any corrupted messages (Figure 7.18). Your options are to not move the mailbox or to skip the corrupted messages. If you elect to skip the corrupted messages, you can specify the maximum number of corrupted items that are acceptable. If the wizard finds more than the maximum number of allowable corruptions, it will not move the mailbox. Select Next to continue.

Figure 7.18: Move Mailbox wizard - corrupted messages
The Exchange Task wizard will display the task schedule screen (Figure 7.19), where you can specify when you would like the wizard to move the mailbox. Select Next to continue.

Figure 7.19: Move Mailbox wizard - task schedule
The Exchange Task wizard will immediately begin moving the mailbox and will display a Task In Progress window to show you the progress of the move. When the move has been completed, the wizard will display a summary screen showing the results of the move operation. Select Finish when you have reviewed the summary information.

7.1.5 Deleting a mailbox-enabled user account

Although it is easier to restore a deleted mailbox than it was before Exchange 2000, it still takes time. Therefore, you should carefully consider any request to delete a mailbox. In almost all cases, it is best to disable the account and hide the mailbox from the address lists for some extended time before permanently deleting it. The mailbox should be deleted only when you are certain that the information in the mailbox is no longer needed. Once you are satisfied that the mailbox is no longer needed, you can use the following procedure to delete the mailbox-enabled user's account.

Start the Active Directory Users and Computers from the Windows Start menu by selecting All Programs →Microsoft Exchange →Active Directory Users and Computers.
Expand the Users section.
In the details pane, right-click the user you want to delete and select Delete.
The system will display a dialog box informing you that the Exchange mailbox also will be deleted and asking whether you are sure you want to continue. Select Yes to delete the account and the associated mailbox.

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