Exchange Server Move


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Hi All

I'd appreciate some advice on this

Currently, I'm running a single domain on Server 2003/Exchange 2003 for around 300 users with several different companies email domains (under one Umbrella company). One of the companies is now moving to new offices and separating away from our current infrastructure. They have a new Windows 2008/Exchange 2010 domain configured and ready to run when they move with the exception of their existing email. What would be the best way of moving the mailboxes? Other than creating PST files for each user and importing them, is there a better way?

Thanks

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How many users are you having to migrate away from the current 300 user domain?

Over the last 7 years where I am now Ive migrated my core business 4 times into big infrastructures and out again and back in. Last one was 300 users back into a large infrastructure but was done on the cheap. Previously we had used Quest tools to automated the process but this time was all manual with new kit and really missed having the tools. But if your only talking say 50 users in the same office on the same workstations you may find it just as easy to do it manually. One benefit of doing it manually is you get a clean profile. Using the Quest tools several times can leave a lot of legacy details which eventually do need cleaning up :)

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Do new offices mean new forest/domain? Or are they remaining part of the existing forest (umbrella)?

If staying the same, and there is a link between the new offices, you should just be able to migrate using the Export-MAilbox cmdlet. This is a great wee guide to detail how is can be done - http://exchangeserverpro.com/export-mailboxes-exchange-server-2010-sp1

If it's new forest/domain, you'd need to have a trust relationship created between the existing and new forests/domains. Then it should be possible to migrate the users using the smae Export-Mailbox cmdlet.

There are other ways of doing it, but just with the built in MS tools that's what I would be thinking. It's not a simple job to be honest, easy but just not simple, as there are a few prereq's you need in place first.

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