With Exchange 2007 I was able to connect to a users mailbox using VB.Net and view the mailbox in XML format. The url I used to do this was https://autodiscover.mydomain.com/exchange. It appears that in Exchange 2010 the "exchange" virtual directory is missing. Does anyone know how to get this to work or have any insight into how to connect to a users mailbox in Exchange 2010 using VB.Net? Thanks.