Our employees have huge folder structures within their Exchange mailboxes. Due to legal requirements in our sector, we have to utilize extremely rigid archiving solutions for all emails sent/received. Over the last 10 years, one member of staff has amassed 5146 folders, and close to 200,000 emails in a mailbox (the overall size is 2.6GB).
They have recently started experience strange glitches using both Outlook and webmail, where emails disappear (whole folders are shown as empty, when we know for a fact they are not - the providers (Rackspace) also confirm they can see emails in those folders when looking on the server).
I then discovered the Outlook 500 folder limitation (although the same issues occur in webmail). The providers are currently investigating the issue, but I'm trying to source solutions to consider in the meantime.
Has anyone else experienced this behaviour for large mailbox structure?
Can anyone recommend a solution where we can perhaps move the folders into a seperate file that is online (OST), so we don't have to manually back up many PST files per user?