Exchange 2010 large Mailbox with 112 GB size found

by butsch 6. April 2017 17:10

The largest Exchange customer Mailbox seen to date? (People with large attachments who really have them business related)

Did not even know that's possible?

A new top scorer was found on a Swiss Exchange 2010 not under maintenance. A busy female user of an advertising and printing office has 112 GIGABYTE in her Exchange Mailbox.

The BOX did run over 4 year's fine now.


  • Maybe the OST Cache files would come into game when the once migrate their local client from Spinning disk to smaller SSD ;-) Her OST-File would then fill the 128GB SSD disks. Now I understand why some user doesn't like Cached Mode from a 1st level view.


The user has a true workload like this and his recycle only shows 188MB. We have seen an employee once who made and ARCHIVE SOLUTION under hid RECYCLE folder in Outlook.exe. So Cleaning out Recycle when you leave outlook.exe per GPO is not always a good solution.

Swiss record I guess?

get-mailbox | Get-MailboxStatistics | where {$_.ObjectClass –eq "Mailbox"} | Sort-Object TotalItemSize –Descending | ft @{label="User";expression={$_.DisplayName}},@{label="Total Size (MB)";expression={$_.TotalItemSize.Value.ToMB()}},@{label="Items";expression={$_.ItemCount}},@{label="Storage Limit";expression={$_.StorageLimitStatus}} -auto


Running time of the Mailbox



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