Exchange deletion question

On your Exchange system, go into the Exchange Admin program. Click on the recepients folder, highlight the user you want to remove and click the X icon at the top of the screen. Alternately, you can click Edit, then Delete. It's that simple!

Someone may have classed them as hidden recipients. Go to the management window and select "View" the "Hidden" They will appear in the recipients wiindow pane. From there you can select and delete them.

Would you consider reposting your question in the Exchange interchange discussion thread, a TechRepublic discussion thread dedicated to Exchange admins? There your question would be seen both by experts who could answer your question and by novices who could learn from it. If you're interested, here's the link to the thread:
https://www.techrepublic.com/forumdiscuss/thread_detail.jhtml;?thread_id=117712