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Migrating Exchange 2003 from SLD to Exchange 2010 in a new FQDN Forest

I inherited  single label domain that as Exchange 2003.  I recently created in a new forest that has a FQDN.  I am going to setup an Interforest Trust between both forest. Now has anyone done this type of migration? I have found tons of articles on numerous ways to do this but nothing this specific. Also I will be migration SQL 2005, 2008, 2012 dBs, a Citrix MetaFrame 3 server and a child domain as well.
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cslt
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cslt
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Ganesh Kumar ASr Infrastructure SpecialistCommented:
So you need to migrated your Exchange 2003 to Exchange 2010. Read this article which can help you for migration step wise.  But the url is for single forest not for multiple forest. First thing you do is to migrated the Active Directory from your old to new forest. You can setup enterprise trust between both the forest and move the users.

I would not recommend to migrate to new forest until you have large related applications using the domain credentials. If they are just for logon authentication you can just create the new user acccount and mailboxes in the new forest instead of migration.

Later you can export the mailboxes usign exmerge and import on the new Exchange 2010 forest.

Here is the article : http://www.msexchange.org/articles-tutorials/exchange-server-2013/migration-deployment/planning-and-migrating-small-organization-exchange-2007-2013-part8.html
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