Script repository

$exchangeServer =  "exchangeserver.domain.com" # TODO: modify me
$filePath = "\\server\share\Archive\%username%.pst" # TODO: modify me

try
{
    # Connect to the Exchange server
    $session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionURI "http://$exchangeServer/PowerShell"
    Import-PSSession $session -DisableNameChecking -AllowClobber -CommandName "Get-MailboxExportRequest", "Remove-MailboxExportRequest", "New-MailboxExportRequest"

    # Clear all previous export requests with the same name.
    Get-MailboxExportRequest -Name "%username%" | Remove-MailboxExportRequest -Confirm:$False
    try
    {
        # Initiate export of the mailbox archive.
        New-MailboxExportRequest "%username%" -FilePath $filePath -Name "%username%" -IsArchive -ErrorAction Stop
    }
    catch
    {
        $Context.LogMessage("Failed to initiate export of mailbox archive for %username%. Error message: " + $_.Exception.Message, "Warning")
    }
}
finally
{
    # Close connection to the Exchange server.
    if ($session) { Remove-PSSession $session }
}