Provide Access to a Mailbox
When you create a new HTTP virtual server, you must provide access to a Simple Mail Transfer Protocol (SMTP) mailbox domain in order to configure the server's root. By default, this root provides access to all mailboxes in the Exchange server's local domain. You can change the default e-mail domain of the HTTP virtual server or, because virtual servers can have more than one root, you can create additional virtual directories to provide access to mailboxes in multiple domains. To provide access to mailboxes in remote e-mail domains, you must create additional virtual directories.
Tip When you create a virtual directory to provide access to a mailbox, you do not have to identify a specific mailbox. You specify only a local domain or remote SMTP domain. When a user accesses the virtual directory, Exchange attempts to access the mailbox associated with the Windows 2000 user account name that the user is logged on as. If you enabled anonymous access, the mailbox specified as the anonymous account is exposed to anonymous users.
To provide access to a mailbox:
Tip A private mailbox is accessed through a URL that contains the user's logon account name.
For example, http://virtualserver/username, where virtualserver is the local or DNS name of the virtual server.