Say you want to export all your Exchange mailboxes to PST files, but would like to know which Active Directory "Windows" user names the mailboxes belongs to. Turns out it's not straightforward, unless there's something I don't get. First: Export a list of all AD users by their name, including their username - the one used in "DOMAIN\username", y…

Export all Exchange mailboxes

# Then this in Exchange Management Shell
$Location = "\\server\pstexport"
New-Item -path $Location -name "migrate.txt" -type File -force
Add-Content "$Location\migrate.txt" "datasourceuser,destinationuser"

# Create a hash table of Exchange mailboxes
$mailboxes = @{}
Get-Mailbox | Select-Object name, alias |
 ForEach-Object { $mailboxes.Add($_.name, $_.alias) }

$reader = [System.IO.File]::OpenText("c:\allusers.txt")
try { for(;;) {
    $line = $reader.ReadLine()
    if ($line -eq $null) { break }
    # process the line
    $name, $SamAccountName = $line.Split(",")
    $ss = $name, $SamAccountName, $alias
    $alias = $mailboxes.Get_Item("$name")
    $ismbx = $mailboxes.ContainsKey($name)
    $notspecial = $alias -notmatch [regex]::escape("{")
    if (($ismbx) -and ($notspecial)) {
      New-MailboxExportRequest -Mailbox $alias -FilePath "$Location\$alias.pst"
      Add-Content "$Location\migrate.txt" "$alias.pst,$SamAccountName"
    }
} }

finally {
  $reader.Close()
}

Get all AD users

# Run this in the Active Directory Module for Powershell
Get-ADUser -Filter * -Properties Name |
 select-object name,SamAccountName |
 convertto-csv -NoTypeInformation |
 % { $_ -replace '"', ""} |
 out-file c:\allusers.txt -fo -en unicode

usage tips

Maybe you find use for this with Zarafa:
http://doc.zarafa.com/trunk/Migration_Manual/en-US/html-single/

Download the tool here:
http://download.zarafa.com/community/final/

Great project to export mailboxes by identifying Active directory user name. However exchange server gets corrupted or peoples want an automated way to export exchange mailboxes into pst file then help of an excellent exchange edb converter ( http://www.pcvita.com/export-exchange-mailbox.html ) is much appreciated. As I know, this is a way only to export mailboxes from offline or dismounted or corrupted edb file.