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Migrating from Exchange 5.5 to Exchange 2003 in separate domains

Posted on 2006-11-14
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Last Modified: 2010-03-06
Hello, I want to upgrade / migrate my Exchange 5.5 (win2000) in DOMAIN_A to Exchange 2003 (win2003) DOMAIN_B in separate domains. How do I move the users, mailboxes and folders between different domains? Is it possible and are there any Step-by-Step instructions?

Thank you,
1NewFish
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Question by:1NewFish
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Expert Comment

by:Vahik
ID: 17944908
if it is a small domain....just do it mannually...create all the users and mailboxes...then exmerge all the mailboxes and using outlook pst all the public folders then import in to 2003....

if it is a large domain...then u need to read this

http://www.microsoft.com/downloads/details.aspx?FamilyID=788975b1-5849-4707-9817-8c9773c25c6c&DisplayLang=en


now if u do it mannually u must reconfigure all users profile.....
if u do it through migration tool then u dont have to reconfigure users profile....

migrartions are always trouble...no matter how much u perform a practice run....u will never know what will actually happen unless u actually do it....but it is always good to be ready....so read the documentation that comes with the download....and make sure u do ur migration durring a very slow long wekend...

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Author Comment

by:1NewFish
ID: 17958222
The link above is for AD migration tool. So you'e saying once I have the exchange 2003 server up in my new domain, all I have to do is migrate the users over with the AD migration tool? Sorry, I am very new to exchange.

Thanks.
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Accepted Solution

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Vahik earned 125 total points
ID: 17962065
http://support.microsoft.com/kb/328871
this is how u use ADMT in conjunction with exchange migration wizard to move mailboxes over.....
u can see from article the limitaions of migration wizard...but if u have large number of users then u may not have other choice...

so what i am saying is first to use ADMT to migrate users and computers(if u like ) with sidhistory
then using migration wizard to move over mailbox data...
for public folders u still have to use PST (u cant even use exmerge for public folders)...

If we are talking about 10 or 20 users then exmerge maybe a better choice for exchange....

with ADMT u have one more advantage.....u dont have to reconfigure users profile

also read this article
http://support.microsoft.com/kb/327928
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Author Comment

by:1NewFish
ID: 17983981
Can I make my exchange 2003 same member of exchange 5.5, migrate mailboxes over, then remove from that domain and join the exchange 2003 to my new domain?


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