Check this MS Article for help - https://techcommunity.microsoft.com/t5/exchange-team-blog/permanently-clear-previous-mailbox-info/ba-p/607619
Duplicated mailbox
Juanma Gómez
21
Reputation points
Hi all,
Some strange things are happening on my Exchange Server 2013.
When I list all mailboxes in powershell, I get one user with the mailbox duplicated (one with 13 GB and the other one with 429 MB). He has been deleting emails today.
If I check his account on Exchange Administration Centre, the usage for this mailbox is 13GB.
Is it still compacting????.
Thanks for your replies.
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