Hello all, I am having problems to install Exchange on a child domain. I am new on this and maybe my logic is even wrong. I tell you what I would like to achieve. I would like to have an Eschange Server operating only under the child_domain without affecting the Domain exchange. My Scenario: This is to be used for testing purposes where users will use exchange not in a production way but for testing purposes. I have a forest with 1 Domain "esg.lab", 3 DC's (windows 2k3 x86 and x64), one of the DC has Exchange 2003 SP2 Installed working fine under the esg.lab. Now I have added to the forest a DC (WindowsServer 2008), a child_domain. So under esg.lab I have now mini.esg.lab. My goal is to install Exchange 2007 and configure to mini.esg.lab child domain. When I try to install Exchange it fails saying I am not on the same Master schema domain. Well.. the master schema is on esg.lab.. but I would like to install the exhange on mini.esg.lab so that I have 2 separate servers.. Does this makes sense?

You need to extend your Schema before introducing Exchange.

A Jose commented you need to extend the schema for 2007 first. The scheme operations master role is a forest role so extending the schema needs to be done in the forest esg.lab before you can install Exchange 2007 on your servers in the child domain. You will need to be a member of the schema admins and enterprise admins when you try to extend the schema in the esg.lab forest root.Exchange & Powershell Geek View my MCP Certifications

Hi Larbac Like the two others wrote you need to extend the schema for the child domain. One thing to remember is, that when you deploy the server it will still be in the same organization as the already deployed production servers. If you want a completly seperate Exchange for testing you should create a new forest to test in and make the lab you want there. /Martin

You need to extend your Schema before introducing Exchange.

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