Export list of Mailboxes to PST in Exchange Server 2010 -SP3 RU8v2.

Hi Everyone.

Every month we have to  export around 50 to100 mailbox to PST for users leaving process and the below command we use to export for each users manually.

Command :New-MailboxExportRequest -Mailbox AylaKol -FilePath \\MBX-01\PSTFileShare\Ayla.pst

I would like to export the list of  user's mailbox using a script and I got the below commands from another forum  and tried  to export with 2 test mailboxs.

Mailbox were queued as mentioned below,But the result is only one .pst file generate named ".PST".

[PS] C:\>$Export = Get-Content .\Users\exadmin\Desktop\Mailbox.txt

[PS] C:\>$Export|%{$_|New-MailboxExportRequest -FilePath "\\servername\D$\Export\PST\$($_.alias).pst"}

Name                                       Mailbox                                                        Status

----                                           -------                                                             ------

MailboxExport                         ch.india.com/Non ch accounts/Users/Ram...    Queued

MailboxExport                         ch.india.com/Non ch accounts/Users/Kha...     Queued

Please advise if I need to change any think in the command or kindly share any script