We've inherited a client who has a mailbox which collects all emails from all other users, however, this is achieved by a retention policy rather than a journal mailbox as such.
The issue is that the mailbox is now 250GB in size and ideally we'd like to reduce it to a more manageable size whilst capturing the email in the mailbox so that it can be accessed elsewhere.
We've attempted to capture in Outlook 2010 so we could export to a pst, however, this hits 50GB and then gets stuck. The server that this exchange 2010 resides on does not have a massive amount of space either, so may need to export this to an external hard drive for now.
However the question is how do we export say 250GB of this and in what format i.e. can we create a 250GB pst file? Ideally we don't want to lose the mail from this, but at 250GB it is killing the server exchange performance