ExchangePro: Exchange 2007 Mailbox Statistics (4316670)

Issue

When performing an inter-org (cross forest) migration mailboxes housed on source forest Ex2007 & Ex2010 servers do not display mailbox sizes and item counts within the Exchange Pro Administrative and User portals.

Cause

Exchange Pro uses native Exchange protocols to query mailbox sizes and item counts. Unlike Ex2003, Ex2007 and Ex2010 do not support WMI as a method for gathering this information. Instead either Exchange Web Services (EWS) or Remote PowerShell must be utilized to gather this information.

Solution 

You must perform one of these 2 actions to gather mailbox size and item count information from these platforms.

1. Open the Exchange Management Shell on either Ex2007 or Ex2010, and execute the following command. This need to be executed only once for each messaging server version. This will allow Exchange Pro to query mailbox size information from these systems:
For Ex2007 type-
Get-ExchangeServer | where {$_.IsClientAccessServer -eq $TRUE} | ForEach-Object {Add-ADPermission -Identity $_.distinguishedname -User (Get-User -IdentityDomain\Administrator | select-object).identity -extendedRight ms-Exch-EPI-Impersonation}
For Ex2010 type-
New-ManagementRoleAssignment -Name:ImpersonationAssignmentName -Role:ApplicationImpersonation -User:Domain\Administrator

2. Identify an Ex2010 Server with a valid (non self-signed) trusted SSL certificate which has the IIS service assigned to it. Open the Exchange Management Shell on this Ex2010 server and type the following 2 commands:
Enable-PSRemoting
Set-PowerShellVirtualDirectory "$env:COMPUTERNAME\PowerShell (Default Web Site)" -BasicAuthentication $true
Once completed, open the Exchange Pro Administrative Portal, and go to the settings page. Change the forest name to the desired source forest and type in the appropriate value in the “Remote PowerShell Host” field.
Click the blue “save disc” icon in the upper left portion of the portal.