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x534nFlag for United States of America

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Single label migration to 2008 r2

Hi,

I have a network with 2003 servers and exchange 2003 in a single label domain.

I have two new servers with 2008r2 and exchange 2010.

I want the single label domain to go away but after reading around it appears a domain rename in this situation is a bad idea because it will break exchange.

I went ahead and created a new domain with a fqdn, joined the second server and setup exchange 2010. After creating new stub zones on both the old and new domain's dns servers I can now ping from both sides using host name.

So now I figure I should just setup a trust and migrate from old forest/domain to the new one. Then move mailboxes from old server to new.

I'm wondering if I will run into any issues migrating from the old single label domain (domain1) to the new 2008 one (domain2.local). Is there anything I should look out for? Has anyone done this? :) Just looking for any advice, input, recommendations, recommended third party tools etc...

also the single label domain is the same as our external domain without the .com. So now the new domain name is different from our external domain. I don't think this should be a problem but new to 2008.

Any input is greatly appreciated.
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Stelian Stan
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Precisely what are you looking out for?

Moving Exchange / Active Directory / both to the new FQDN?

Regards,
Exchange_Geek
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ASKER

I don't think I have a choice of what type of migration I should use. I think the only option is to create a new forest and root domain and do a intra forest migration thanks to the single label domain name. It seems a rare scenerio with that pesky single lable domain. (it wasn't me who created the single label domain) It has been mildly problematic but not bad I just assume I should fix it now rather than join the new stuff to a single lable domain. Maybe my assumption is wrong because that sure would make my life easier just to join existing ad.
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I could rebuild active directory but I really need exchange moved to new fqdm.
What are the number of mailboxes and their total size approx count?

Regards,
Exchange_Geek
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ASKER

just hoping I'm on the right track.
Well, that wasn't the exact answer i was expecting :)

Regards,
Exchange_Geek
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ASKER

only 25 mailboxes, sizes vary greatly. information store about 48 gigs.
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Exchange_Geek
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Do pst files still have a size cap? Looks like my largest one is only 5 gigs.
No such limit in E2010 that I've heard of.

Regards,
Exchange_Geek
Like Exchange_Geek mentioned is no limit on Exchange but on Office 2010 the size limit is 20 GB: http://support.microsoft.com/kb/982577 and on Office 2007 the limit is 2GB: http://support.microsoft.com/kb/830336
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most machines have Office 2007.  Mailboxes being exported from 2003. I have some 5GB mailboxes.
To export from Exchange 2003 you can use ExMerge. Excellent explanation:
http://www.petri.co.il/brick_level_backup_of_mailboxes_by_using_exmerge.htm
or
http://www.rackspace.com/apps/support/portal/6159

For files larger than 2GB, use the Options button on the Source Server page and click on the Dates tab. You can then specify a date range for the .PST being exported to help reduce size.
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I've read that using exmerge breaks a few things like the inability to reply to old emails or edit old calandar items. Do think this is a major drawback?

Today I was attempting to use the remote move request from the 2010 server to 2003 but I couldn't get it working. Do you think I would be better off using that or is it not worth the effort in my case?
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Ok, I'll take your advice, thanks for the input guys.