I needed to do a mass password change on imported accounts and decided to do this with Powershell. For some reason (maybe because I am using PowerShell 2.0) I got an unexpected error when using the Password property or the SetPassword method (RandomPassword is a function I wrote that generates Random passwords the meet the Complexity Requirements):

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When you uninstall Exchange 2007 you need to remove all Mailbox- and Public Folder databases. If you try to remove the Public Folder Database this will fail because there are replicas of the system folders in the Public Folder database. I didn’t find a way to remove these replicas from the Exchange Management GUI but it can be done with the following Powershell Code:

Get-PublicFolder -Server <exchange server> “\” -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server <exchange server> -Recurse -ErrorAction:SilentlyContinue
Get-PublicFolder -Server <exchange server> “\Non_Ipm_Subtree” -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server <exchange server> -Recurse -ErrorAction:SilentlyContinue
Get-PublicFolder -Server <exchange server> “\Non_Ipm_Subtree” -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server <exchange server> -Recurse -ErrorAction:SilentlyContinue

(change <exchange server> to the name of your Exchange Server)

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