Hello, I am talking with an organization that is migrating from GroupWise to a hosted Exchange 2007 environment. They want to do something that is a bit odd. A forest level trust will be established from their AD forest to the hosting provider, and they will start fresh with empty Exchange 2007 mailboxes. What they want to do is export all of the GroupWise content to PST files (they already have a tool that can do this from the Post Office / Domain side) and import the data into an Archive system such as Enterprise Vault. They want to grant normal users access to only their own old mail (now in the archive system) and grant an eDiscovery team the permissions to read all of the archived data to do eDiscovery across all archives. I was thinking that this could be done with shared archives in EV 10, and granting the Windows AD account permissions to the corresponding shared archive. The only kicker is that no changes can be made to the hosted Exchange 2007 environment (including the hosting provider’s AD), so the AD account from the trusted (non-mail) forest must be used to grant all permissions. This is the same forest where EV would be installed. Does this seem feasible? If so would it be possible to automate the creation of all the shared archives, importation of the PST data, and permission modification, with EVPM or a similar tool? There are 3,800 old mailboxes in question. Remember that there will not be any real mailbox provisioning, no new data will be added to the EV archives, and they will just be for "historical" reference for user reference and eDiscovery needs. Thanks!