title: How to get a list of all the Shared Mailboxes that a user have access to Exchange2010 | Exchange Management Shell or PowerShell?
body: <blockquote>
  <p>Get-Mailbox | Get-MailboxPermission -user </p>
  <p>Get-Mailbox | Get-MailboxPermission -user  | Where {$_.AccessRights -like &quot;<em>send</em>as*&quot;}</p>
  <p>Get-Mailbox | Get-ADPermission | Where {$_.extendedRights -like &quot;<em>send-as</em>&quot;}</p>
  </blockquote>
  <p>All of the above commands does not work for me</p>