This script will export a .CSV for each group in an OU.  The CSV will be named the same as the group name.

Use this code on an Exchange Server:

Get-Group -OrganizationalUnit "Some OU" | ForEach-Object { Get-Group -Identity $_.Name | ForEach { $_.Members } | Get-User | Export-Csv ($_.Name + '.csv') }

Use this code on an machine with Import-Module ActiveDirectory loaded:

Get-ADGroup -OrganizationalUnit "Some OU" | ForEach-Object { Get-ADGroup -Identity $_.Name | ForEach { $_.Members } | Get-ADUser | Export-Csv ($_.Name + '.csv') }

* Greg Martin suggested I clear this up...  Thanks!

This script exports users from an OU to a CSV that can be used by other scripts.  I had to move hundreds of users from one domain to another and modify some user properties during the process.  A CSV file allows you to open the file in Excel and edit the fields as needed.  You can take the output of this script and use it to create uses in a new domain with this script.

Get-Mailbox -OrganizationalUnit "User OU" | Export-Csv -f User_Mailboxes.csv

Export details for all mailboxes for user in OU.txt (76.00 bytes)