I am running Exchange 2007. In prior versions of Exchange, I remember that it was possible to look at the Information Store and determine the hostname, version and other information of all clients that had a MAPI connection to a specific mailbox. I am trying to troubleshoot a user where I strongly suspect there is another Outlook client attaching to his mailbox and moving mail (the client is moving messages into the "Junk E-Mail" folder when it should instead be leaving it up to the Exchange 2007 server to do this for it). For the life of me, I cannot find any way to get the hostname of all MAPI-connected clients attached to the user's mailbox. Hasthis functionality been removed?

Hi Jim, Still that functionality is there but you need to get the detail with Get-LogonStatistics. These resources explain you on how-to. Where are mailbox last logon, client IP address, and other details in Exchange 2007? http://exchangepedia.com/blog/2008/07/where-are-mailbox-last-logon-client-ip.html Get-LogonStatistics http://technet.microsoft.com/en-us/library/bb124415(EXCHG.80).aspx