Remove Terminated User from GAL - Powershell

Quick Powershell script to remove disabled users from the Exchange 2007 Global Address List (GAL) without deleting the account / mailbox. This uses the Quest Active Roles powershell extensions for Active Directory.

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### Written by Matt Brown
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### Name: Remove Terminated Employees from GAL
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### Version: v1.0, 02/2010
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### Info: This script Finds Disabled Users and removes them from the GAL
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### Requires: 1. Quest Powershell extensions for AD
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### Note: If you are using Resource Mailboxes that are disabled you
###   will want to directly specify your staff OU.
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$mydomain = 'domain.company.com/Staff'
get-qaduser -SearchRoot $mydomain -SizeLimit 3000 -Enabled:$false | set-qaduser -objectAttributes @{showinaddressbook=@()}