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We have an 1 exchange 2003 server that is one domain and we need to migrate it over to another domain. What and how is the best way to accomplish this?

We have an 1 exchange 2003 server that is one domain and we need to migrate it over to another domain. What and how is the best way to accomplish this? the current exchange server is set-up on one domain (Domain A) under the forest. And we need have another server setup on another domain (Domain B) in the forest but need to install exchange 2003 on it and migrate the all accounts from current server to the new server on (Domain B). What is the best method to do this?
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dbosman7
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dbosman7
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SembeeCommented:
There is only way way. The data has to be extracted and re-imported. You cannot pock up the server and put it in to another domain.
Depending on how many users there are will depend on whether you should exmerge or third party - but anything less than 500 and exmerge is about your only choice.

Simon.
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dbosman7Author Commented:
How do you extract and re-import? (never done it before) and also how would you set it up so the users can keep thier same email address from the previous exchange server?
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dbosman7Author Commented:
How do you extract and re-import? (never done it before) and also how would you set it up so the users can keep thier same email address from the previous exchange server?
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SembeeCommented:
Everything has to be created on the new server - email addresses, user accounts etc. Exmerge only removes the data.
Furthermore users will be unable to hit reply on old internal email and then expect it to work - they will have to select the recipient from the GAL again.
As for the actual extraction process - exmerge is heavily documented - msexchange.org, Microsoft.com and others have articles on its use, plus it comes with a readme file.

Simon.
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