$users = Import-CSV C:\scripts\users.csv
$users| foreach {
$Password = convertto-securestring $_.password -asplaintext -force
new-mailbox -name $_.name -alias $_.alias -FirstName $_.Firstname -LastName $_.Lastname -userPrincipalName $_.UPN -database $_.Database -OrganizationalUnit $_.OUpath -Password $Password –ResetPasswordOnNextLogon:$true
}
www.youtube.com/watch?v=nvJSMdnyeIQ
http://searchexchange.techtarget.com/tip/Create-hundreds-of-Exchange-2010-mailboxes-for-real-world-lab-testing
http://itproafrica.com/technology/exchange/using-powershell-to-bulk-create-exchange-users-with-passwords/