PowerShell Script to Export Exchange 2013 PSTs

Overview

This script can allow you to create a scheduled job to dump all Mailboxes on a server to .pst files, each time they are dumped they are put into a directory that is named after the date the script is run.

New-ManagementRoleAssignment –Role “Mailbox Import Export” –User [DOMAIN]\Username
Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest -confirm:$all

$BackupPath = "F:\PSTs"
$MaxDays = "-30"
$CurrentDate = Get-Date
$DeleteDate = $CurrentDate.AddDays($MaxDays)

# Delete the files older than x days on the main folder level (Folders Excluded)
Get-ChildItem $BackupPath | ?{ !$_.PsIsContainer } | Where-Object { $_.LastWriteTime -lt $DeleteDate } | Remove-Item -Force 

-Confirm:$False

# Delete the folders (and all included content) older than x days on the main folder level (Files Excluded)
Get-ChildItem $BackupPath | ?{ $_.PSIsContainer } | Where-Object { $_.LastWriteTime -lt $DeleteDate } | Remove-Item -Recurse 

-Force -Confirm:$False

$Folder = $(get-date -f yyyy-MM-dd)
MkDir F:\PSTs\$Folder
foreach ($i in (Get-Mailbox)) { New-MailboxExportRequest -Mailbox $i -FilePath "\\[UNCPath]\F$\PSTs\$Folder\$($i.Alias).pst" }
Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest -confirm:$all