Start the Exchange Management Console.

In the console tree, click Recipient Configuration.

In the action pane, click New Mailbox. The New Mailbox wizard appears.

On the Introduction page, click Room Mailbox, and then click Next.

On the User Type page, click New user, and then click Next.

On the Mailbox Information page, complete the following fields:

• Organizational unit   By default, the New Mailbox wizard displays the Users container in the Active Directory directory service. To change the default organizational unit (OU) displayed, click Browse, and then select the OU that you want.
  
  
• First name   Type the first name of the user. This field is optional.
  
  
• Initials   Type the initials of the user. This field is optional.
  
  
• Last name   Type the last name of the user. This field is optional.
  
  
• User name   By default, this field is populated with the user's first name, initials, and last name. You can modify the name in this field.
  
  
• User logon name (User Principal Name)   Type the name that the user will use to log on to the mailbox. The user logon name consists of a user name and a suffix. Typically, the suffix is the domain name where the user account resides.
  
  
• User logon name (pre-Windows 2000)   Also known as the Security Account Manager Account Name (SAMAccountName). This name is used for the Microsoft Windows Internet Name Service (WINS) name resolution and must be unique within the domain. Typically, the pre-Windows 2000 Server user logon name is the same as the user principal name (UPN). This field is required.
  
  
• Password   Type the password that the user must use to log on to his or her mailbox.
  
  
• Confirm password   Retype the password that you entered in the Password field.
  
  
• User must change password at next logon   Select this check box if you want the user to reset the password.
  
  

Click Next.

On the Mailbox Settings page, complete the following fields:

• Alias   By default, this field is populated based on the User logon name (User Principal Name) of the user. You can modify the alias in this field. If the user logon name contains any characters that are not valid for the alias field, they will be replaced by underscore characters (_). The alias cannot exceed 64 characters and must be unique in the forest.
  
  
• Mailbox database   Click Browse to open the Select Mailbox Database dialog box. This dialog box lists all the mailbox databases in your Exchange organization. By default, the mailbox databases are sorted by name. You can also sort the databases by storage group name or server name by clicking the title of the corresponding column. Select the mailbox database you want to use, and then click OK.
  
  
• Managed folder mailbox policy   To specify a messaging records management (MRM) policy, select this check box, and then click Browse to select the MRM mailbox policy to be associated with this mailbox. For example, use this option if you want this mailbox to adhere to an MRM policy such as the retention period for the mailbox data. To learn more about managed folder mailbox policies, see Understanding Messaging Records Management. This is an optional field.
  
  

  Note:
  Managed custom folders are a premium feature of MRM. Mailboxes with policies that include managed custom folders require an Exchange Server Enterprise client access license (CAL).

• Exchange ActiveSync mailbox policy   To specify an Exchange ActiveSync mailbox policy, select this check box, and then click Browse to select the Exchange ActiveSync mailbox policy to be associated with this mailbox. To learn more about Exchange ActiveSync mailbox policies, see Understanding Exchange ActiveSync Mailbox Policies. This field is optional. In most cases you will not need to assign an Exchange ActiveSync mailbox policy to a room mailbox.
  
  

Click Next.

On the New Mailbox page, review the Configuration Summary. To make any configuration changes, click Back. To create the new room mailbox, click New.

On the Completion page, the Summary states whether the room mailbox was successfully created. The summary also displays the Exchange Management Shell command that was used to create the mailbox.

Click Finish.

Start the Exchange Management Console.

In the console tree, click Recipient Configuration.

In the action pane, click New Mailbox. The New Mailbox wizard appears.

On the Introduction page, click Room Mailbox, and then click Next.

On the User Type page, click New user, and then click Next.

On the Mailbox Information page, complete the following fields:

• Organizational unit   By default, the New Mailbox wizard displays the Users container in the Active Directory directory service. To change the default organizational unit (OU) that is displayed, click Browse, and then select the OU that you want.
  
  
• First name   Type the first name of the user. This field is optional.
  
  
• Initials   Type the initials of the user. This field is optional.
  
  
• Last name   Type the last name of the user. This field is optional.
  
  
• User name   By default, this field is populated with the user's first name, initials, and last name. You can modify the name in this field.
  
  
• User logon name (User Principal Name)   Type the name that the user will use to log on to the mailbox. The user logon name consists of a user name and a suffix. Typically, the suffix is the domain name where the user account resides.
  
  
• User logon name (pre-Windows 2000)   Also known as the Security Account Manager Account Name (SAMAccountName). This name is used for the Microsoft Windows Internet Name Service (WINS) name resolution and must be unique within the domain. Typically, the pre-Windows 2000 Server user logon name is the same as the user principal name (UPN). This field is required.
  
  
• Password   Type the password that the user must use to log on to his or her mailbox.
  
  
• Confirm password   Retype the password that you entered in the Password field.
  
  
• User must change password at next logon   Select this check box if you want the user to reset the password.
  
  

Click Next.

On the Mailbox Settings page, complete the following fields:

• Alias   By default, this field is populated based on the User logon name (User Principal Name) of the user. You can modify the alias in this field. If the user logon name contains any characters that are not valid for the alias field, they will be replaced by underscore characters (_). The alias cannot exceed 64 characters and must be unique in the forest.
  
  
• Server   To change the default server, select the server you want from this list.
  
  
• Storage group   To change the default storage group, select the storage group you want from this list.
  
  
• Mailbox database   To change the default mailbox database, select the mailbox database you want from this list.
  
  
• Managed folder mailbox policy    To specify a messaging records management (MRM) policy, select this check box, and then click Browse to select the MRM mailbox policy to be associated with this mailbox. For example, use this option if you want this mailbox to adhere to an MRM policy such as the retention period for the mailbox data. To learn more about managed folder mailbox policies, see Understanding Messaging Records Management. This field is optional.
  
  

  Note:
  Managed custom folders are a premium feature of MRM. Mailboxes with policies that include managed custom folders require an Exchange Server Enterprise client access license (CAL).

• Exchange ActiveSync mailbox policy   To specify an Exchange ActiveSync mailbox policy, select this check box, and then click Browse to select the Exchange ActiveSync mailbox policy to be associated with this mailbox. To learn more about Exchange ActiveSync mailbox policies, see Understanding Exchange ActiveSync Mailbox Policies. This field is optional. In most cases you will not need to assign an Exchange ActiveSync mailbox policy to a room mailbox.
  
  

Click Next.

On the New Mailbox page, review the Configuration Summary. To make any configuration changes, click Back. To create the new mailbox, click New.

On the Completion page, the Summary states whether the room mailbox was successfully created. The summary also displays the Exchange Management Shell command that was used to create the mailbox.

Click Finish.