How do I discover all mailboxes for an Exchange Server using Exchange Web Services?

I'm using Exchange Web Services Managed API 1.0 to access the Exchange servers (2007) in my organization. I need to iterate over all the mailboxes on a given server. I haven't seen a way to get the list of mailboxes defined for a gi开发者_开发知识库ven Exchange server. I have been able to use the AutoDiscover service to find the address of a hub server for a specific mailbox, but I'm interested in getting a list of all mailboxes. Can someone point me in the right direction?

If your problem is not yet solved I would you recommend use just pure LDAP queries instead of Exchange Web Services. The information which you need are saved in homeMDB, msExchHomeServerName and probably homeMTA Active Directory attributes. You can modify LDAP query from http://www.msexchange.org/tutorials/Creating_a_list_of_Users_and_their_email_addresses_in_Exchange_2000_2.html or http://technet.microsoft.com/en-us/library/bb125087(EXCHG.65).aspx to receive information which you need.