EXCHANGE clears recoverable project folders (in-place electronic data display and retention)
The Recoverable Items folder (known as the Dumpster in earlier versions of Exchange) exists to prevent accidental or malicious deletions and to facilitate discovery efforts that often occur before or during litigation or investigation.
Its immediate effect is "on-site electronic data display and retention" for compliance management in ECP. Even if the user deletes the mail, it can be found back in this way. The warning quota for this folder is 20 gigabytes. 30 gigabytes has reached the maximum quota. When the maximum quota is reached, there will be a warning prompt.
The following command empties the contents of the Recoverable Folder:
search-mailbox -identy "mailboxname" -searchdumpsteronly -deletecontent
Note:
1. Quotas can be changed
2. Command execution requires permissions such as discovery management, import export, etc.