Select Manage Virtual Hosts under Account Options....
In the list box, select a host to modify. Click Modify.
On the Modify Virtual Host page, modify any of the following information:
Aliases. The aliases for the virtual host.
Default Max Mailbox Size. The maximum mailbox size in Bytes.
Default Max Number Messages. The maximum number of messages.
Single Message Max Size. The maximum size of a single message.
Maximum User Count. The maximum number of users for the virtual host.
Maximum Number of logon Attempts. Maximum number of retries allowed for logons.
Maximum Number of Times Suspended. Maximum number of times user can be suspended before barring him
Maximum Suspended Duration. Maximum number of seconds an account will be suspended if users has exhausted retries.
Top Directory Name. The name of the top directory. (view only)
Local Address. The local address of the virtual host. (view only)
4. Enable any of the following options: Note that the following options will apply for the entire domain.
Enable Spell Checking. Enable the spell check when composing messages.
Enable Web Calendaring. Allows the host the ability to access Web Calendaring from Web Messaging.
5. Select the connection type.
Enable SSL. Allows the option of using Secure Socket Layers for security.
Force SSL. Forces the virtual host to use Secure Socket Layers for security.
Note: If the default domain is set to Force SSL, all virtual domains will also be restricted to using SSL. This is because the login page is based upon the default domain's settings. However, if a virtual domain is set for Force SSL there will be no impact on other virtual domains or for the default domain.