[ExchangeList] 5.5 to 2003 Migration

  • From: Darin Sullivan <Darin_Sullivan@xxxxxxxxxx>
  • To: ExchangeList <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 24 Mar 2006 10:13:19 -0600

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I have a large migration project that involves migrating a NT 4.0 Domain with Exchange 5.5 to a Windows 2003 Forest with Exchange 2003 that are in Native Mode.  There must be co-existance between the two during the migration and the users that get migrated over must keep the same smtp address. I have a test environment and I am using ADMT to migrate objects over and perform security translation, along with using the exchange migration tools to bring the mailbox over.  I also have ADC configured with two Inter-Org connections configured as described in Microsoft Documentation.  I think I am missing a piece somewhere as I don't understand how mailflow occurs between users that have been migrated over to the Exchange 2003 server.  Once a user gets migrated, the other users gets a bounce back when they try to email that person.  From reading, it should be using x.500 to deliver the email?  Am I trying to do something that's not supported? 

Darin Sullivan
Keller Schroeder & Associates, Inc.

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