Exchange 2003 to Exchange 2010 on different /new domain

We are currently running Windows Server 2003 Standard with Exchange 2003 with approx. 65 users along with another Windows Server 2008 R2 Domain Controller.
We are moving premises and will be setting up our new network from scratch.. is there a "simple" way of migrating (or backing up and restoring) users existing mailboxes and accounts to a new domain ? Or, even a step by step guide available to achieve this ?
syssol52Asked:
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d3ath5tarConnect With a Mentor Commented:
Well export really is your only option if you can't do a cross domain move.
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syssol52Author Commented:
Hi,
Thank you for your post.
For some reason I would rather export the accounts and mailboxes to an external drive or network location instead of moving the mailboxes completely - is thee a way to achieve this ?
Then run an import tool from Exchange 2010.. this way I can test that they have imported successfully while still having my exchange 2003 Server online i.e. users can still work away as normal so I can test.
Once we move premises I can perform the operation after hours without affecting anyone..
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syssol52Author Commented:
or, if it's an easier option once I export all user mailboxes to pst files on exchange 2003, is there a way to import pst mailboxes to the archive store in exchange 2010 ?
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d3ath5tarCommented:
You then put yourself in the issue of missing email delivered to your old system if you have both active,.
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syssol52Author Commented:
yes, that's ok for testing purposes (i hope)
When it comes to the "live" export / import, we will take the exchange server 2003 offline, perform what's required to export and import the mailboxes, update our MX records to new IP of new domain / new exchange 2010 server and hopefully the mails will start to deliver to our new server..
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d3ath5tarCommented:
Are you running exchange enterprise edition?
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syssol52Author Commented:
we are running exchange 2003 standard with latest service pack but will be migrating to exchange server 2010 enterprise with service pack 1
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