Title: Shared Hosting with Exchange 2003 (Part 1). Author: Amit Zinman Summary: Active Directory and Exchange allows you to provide service to more than company without the need to build a separate domain / forest for each hosted company. The following article describes a simple shared hosting scenario where multiple sister companies are shared using the same Active Directory domain and can interoperate with each other. Link: http://www.MSExchange.org/pages/article.asp?id=590