When you attempt to recover items from the Deleted Items folder, you may receive the following warning message:
Outlook was unable to recover some or all of the items in this folder. Make sure you have the required permissions to recover items in this folder, and try again. If the problem persists, contact your administrator.
NOTE: Even though you received the preceding message, you can still recover the items.
If you attempt to remove items from the Recovery folder, you may receive the following message:
Outlook was unable to delete some items from this folder. Make sure you have the required permissions and try again. If the problem persists, contact your administrator.
Then, Background Cleanup may report the following event in the server event log:
Event Type: Information
Event Source: MSExchangeIS Mailbox Store
Event Category: Background Cleanup
Event ID: 1232
Description:
Error -2147221233 while hard-deleting messages in folder on database "Storage Group \Store Name".