Can one AD user have more than one Exchange Mailbox?

Hi everybody,

I have one doubt - Can one Active Directory user have more than one Exchange mailbox? Because in Creating Exchange Server mailbox-enabled and mail-enabled objects in Active Directory "A mailbox-enabled object is a Windows 2000 Active Directory object that has one or more Exchange Server mailboxes associated with it." is written. So, I am confused.

Thanks & regards,

Talib Hussain