autoexpandingarchive

0_troubleshooting_auto_expanding_archive.ps1

#Get connected to Exchage Online Management
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName <UPN>

1_troubleshooting_autoexpanding_archive.ps1

#Confirm that AutoExpandingArchiveEnabled is True and pay attention to what the RetentionPolicy is set to. 
#If RetentionPolicy is set to "Default MRM Policy", confirm that it includes the property "Default 18 months move to archive"
Get-Mailbox <UPN> | FL AutoExpandingArchiveEnabled,RetentionPolicy
#Example output:
#AutoExpandingArchiveEnabled : True
#RetentionPolicy             : 9 Month Auto-Archive

#Confirm that RetentionHoldEnabled is not True
#Reference: https://docs.microsoft.com/en-us/exchange/mailbox-retention-hold-exchange-2013-help
Get-Mailbox <UPN> | FL RetentionHoldEnabled
#If RetentionHoldEnabled is True, set it to False:
Set-Mailbox <UPN> -RetentionHoldEnabled $false

#Check the total size of the mailbox:
Get-MailboxStatistics <UPN> | FL TotalItemSize
#Example output: 
#TotalItemSize : 47.99 GB (51,528,994,198 bytes)

#Run the following command in Exchange Online PowerShell to enable auto-expanding archiving for your entire organization.
#Reference: https://docs.microsoft.com/en-us/microsoft-365/compliance/enable-unlimited-archiving?view=o365-worldwide#more-information
Set-OrganizationConfig -AutoExpandingArchive

#Use the Start-ManagedFolderAssistant cmdlet to immediately start messaging records management (MRM) processing of mailboxes that you specify.
#Reference:https://docs.microsoft.com/en-us/powershell/module/exchange/start-managedfolderassistant?view=exchange-ps
Start-ManagedFolderAssistant <UPN>

2_generate_report.ps1

#This script iterates through every mailbox in the organization and saves a report in .csv format.
$Result=@() 
$mailboxes = Get-Mailbox -ResultSize Unlimited
$totalmbx = $mailboxes.Count
$i = 1 
$mailboxes | ForEach-Object {
$i++
$mbx = $_
$size = $null
 
Write-Progress -activity "Processing $mbx" -status "$i out of $totalmbx completed"
 
if ($mbx.ArchiveStatus -eq "Active"){
$mbs = Get-MailboxStatistics $mbx.UserPrincipalName
 
if ($mbs.TotalItemSize -ne $null){
$size = [math]::Round(($mbs.TotalItemSize.ToString().Split('(')[1].Split(' ')[0].Replace(',','')/1MB),2)
}else{
$size = 0 }
}
 
$Result += New-Object -TypeName PSObject -Property $([ordered]@{ 
ArchiveMailboxSizeInMB = $size
ArchiveName =$mbx.ArchiveName
ArchiveQuota = if ($mbx.ArchiveStatus -eq "Active") {$mbx.ArchiveQuota} Else { $null} 
ArchiveState =$mbx.ArchiveState
ArchiveStatus =$mbx.ArchiveStatus
ArchiveWarningQuota=if ($mbx.ArchiveStatus -eq "Active") {$mbx.ArchiveWarningQuota} Else { $null} 
AutoExpandingArchiveEnabled=$mbx.AutoExpandingArchiveEnabled
RetentionHoldEnabled=$mbx.RetentionHoldEnabled
UserName = $mbx.DisplayName
UserPrincipalName = $mbx.UserPrincipalName
})
}
$Result | Export-CSV "Archive-Mailbox-Report.csv"

3_enable_AutoExpandingArchive.ps1

$mailboxes = Get-Mailbox -ResultSize Unlimited
$totalmbx = $mailboxes.Count
$i = 1
# Iterate through all mailboxes in the organization
# If archiving is already enabled but the auto-expanding archive is not enabled, enable the auto-expanding archive.
foreach($mbx in $mailboxes){
$i++
Write-Progress -activity "Processing $mbx" -status "$i out of $totalmbx completed"
    if($mbx.ArchiveStatus -eq "Active" -and $mbx.AutoExpandingArchiveEnabled -eq $false){
        Write-Output $mbx.UserPrincipalName
        Enable-Mailbox $mbx.UserPrincipalName -AutoExpandingArchive
    }
}

4_disable_retention_hold.ps1

$mailboxes = Get-Mailbox -ResultSize Unlimited
$totalmbx = $mailboxes.Count
$i = 1 
# Iterate through all mailboxes in the organization
# If a mailbox is on retention hold, take it out of retention hold
foreach($mbx in $mailboxes){
$i++
Write-Progress -activity "Processing $mbx" -status "$i out of $totalmbx completed"
    if($mbx.RetentionHoldEnabled -eq $true){
        Write-Output $mbx.UserPrincipalName
        Set-Mailbox $mbx.UserPrincipalName -RetentionHoldEnabled $false
    }
}