troubleshooting Question

Request for Advice - AD/Exchange Migration

Avatar of Justin Owens
Justin OwensFlag for United States of America asked on
Active DirectoryExchangeIT Administration
13 Comments4 Solutions504 ViewsLast Modified:

AD 2003 Native
Exchange 2007

AD 2008 Mixed
Exchange 2003

CompanyA acquires CompanyB.

CompanyA's desire:
Single forest with two child domains (CompanyA.parentco.corp and CompanyB.parentco.corp).
Single Exchange organization to host email boxes for CompanyA and CompanyB users.  The users would need to default to their respective external domain addresses ( for CompanyA.partentco.corp and for CompanyB.parentco.corp) but have the ability to have the other external domain addresses added as needed on a case by case basis.

AD is to be 2008 and Exchange is to be 2010.

CompanyA desires for CompanyA.parentco.corp to host its users and computers and CompanyB.parentco.corp to host its users and computer.

What is the easiest way to make this happen?  What is the safest way to make this happen?  New hardware is a given and will be purchased, but not until a plan is in place and approved.

Much obliged.

Justin Owens
ITIL Problem Manager

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