Initial mailbox junk email configuration - Office 365

Greetings Experts,

We just migrated to Office 365 and are using Exchange.  I have a question about the junk email configuration.

So I want to add a domain to the white list for our entire organization.  I think I have the command correct, but the problem is that you can't add items to entire system unless everyone has logged into OWA, or even for the individual until they log in.  I found a link that states that the junk mail folder is not created till the user logs in for the first time, also that the time zone needs to be set.  I attached the link at the bottom, he created some scripts to get past this, but it's on the individual level.  I need it to work on the organizational level.  We have over 100 mailboxes, some of them are ghost boxes for SQL and such, so I'm not going to log in for everyone.

If anyone knows a way around this it would be most appreciated

http://forums.msexchange.org/m_1800563463/mpage_1/key_/tm.htm#1800563463

Here is the command I'm running and the output:

PS C:\Windows\system32> Get-Mailbox | Set-MailboxJunkEmailConfiguration -Trusted
SendersAndDomains "bwd.us"
The Junk Email configuration couldn't be set. The user needs to sign in to
Outlook Web App before they can modify their Safe Senders and Recipients or
Blocked Senders lists.
    + CategoryInfo          : NotSpecified: (:) [Set-MailboxJunkEmailConfigura
   tion], DataSourceOperationException
    + FullyQualifiedErrorId : [Server=BN1PR08MB073,RequestId=aa91381e-d653-438
   8-a127-f85e87d679d1,TimeStamp=5/24/2013 2:12:21 PM] B3C370A8,Microsoft.Exc
  hange.Management.StoreTasks.SetMailboxJunkEmailConfiguration
    + PSComputerName        : pod51044psh.outlook.com




Thanks,
Kacey