Arbitration mailboxes and Discovery do not show up using PowerShell Get command

Posted on 2013-01-24
Last Modified: 2013-02-04
We have been running Exchange SP1 Update Rollup 6 now for some time. I was doing some reading in my Exchange book and came across a section on System and Discovery Mailboxes. There are 4 mailboxes and the user accounts get created in the root Domain. I did check and the accounts are there and disabled like they should be. However, when I try to display the mailboxes using PowerShell on Exchange, nothing comes back. A get-mailbox -Arbitration produces nothing. The Discovery Search Mailbox shows up in the GUI just like any other recipient but I can't display it in PowerShell using the Display name or alias. I just get an error saying the mailbox is not found.

I will tell you that I can and have been doing Discovery searches right along with no issues. I don't think these mailboxes were deleted because we have been running like this for at least a year with no issues at all. Is there a situation where these mailboxes just won't display to keep you from deleting them? I know you can recreate the arbitration mailboxes but I don't want to do that if they are already there and I am just not viewing them correctly.
Question by:osiexchange
  • 6
  • 3
LVL 41

Accepted Solution

Amit earned 275 total points
ID: 38815524
Try this
Get-Mailbox -Database "DB Name" -Arbitration | fl name, alias

Author Comment

ID: 38815577
That did not work either. After I posted the above, I did using ADSIEdit to view the accounts and look at the attributes for all 4. They all have a value in HomeMDB and HomeMTA so it looks like these accounts do have mailboxes but I can't display them in PowerShell and only the DiscoverySearchMailbox shows up in the GUI.

Author Comment

ID: 38815639

When I dump the mailboxes to a .csv file using the get-mailbox -database command and open in Excel, I do see the mailboxes. A few show up with the Display Name

Micrsoft Exchange - One of the System Mailboxes
Microsoft Exchange Approval Assistant - FederatedEmail mailbox

So it looks like the mailboxes are there. Shouldn't they show up with the -arbitration switch?

I can't get them to display even with the display name using PowerShell.

Author Comment

ID: 38819513
I escalated this to MSPS.
How does your email signature look on mobiles?

Do your employees use mobile devices to reply to emails? With mobile becoming increasingly important to the business world, it is in your best interest to make sure that your email signature looks great across all types of devices.


Assisted Solution

osiexchange earned 0 total points
ID: 38819671
The problem was I was not specifying a Domain Controller in the Forest root where the accounts live when I ran the get-mailbox command. Exchange is installed in a child Domain but the accounts live in the Forest Root. I ran the command below which found the mailboxes

Get-mailbox -arbitration -DomainController "Root DC name"
LVL 41

Expert Comment

ID: 38819690
Thanks for sharing.

Author Comment

ID: 38819700
Even MS was confused on that one. It took them about 15 minutes to figure it out.
LVL 41

Expert Comment

ID: 38819721
It's strange that these mailboxes reside at forest level.

Author Closing Comment

ID: 38850506
I escalted to Microsoft for conclusion.

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Resolve DNS query failed errors for Exchange
Resolve Outlook connectivity issues after moving mailbox to new Exchange 2016 server
In this video we show how to create a Shared Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Sha…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

706 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now