Exchange Store Manager service might fail to scan some items in a mailbox. Items which might cause Exchange Store Manager to fail should be removed from mailbox. Deleting those items will place them into Dumpster, but the Exchange Store Manager will still fail as it also scans items in Dumpster. In this case the dumpster needs to be purged.
Purging will finally remove those items without option to recover, so they may need to be backed up prior to purging.
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