How do I exmerge out of Exchange 2003 and into Exchange 2010

jamie177
jamie177 used Ask the Experts™
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I'm looking to migrate a very shaky Exchange 2003 (single server, non-SBS) server to Exchange 2010 (single server).  I'm considering a traditional coexistence migration, but need a plan B if that is not working out.

What's the upside/downside of just exmerging all of the mailboxes out of Exchange 2003, removing the entire Exchange 2003 organization, doing a fresh install of Exchange 2010, and exmerging the mailboxes back in?

I do understand that my database size will increase as the message/attachements will no longer be linked.

If this is feasible please provide at lease a high level sequence of events to achieve the above.

Thank you!
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Author

Commented:
There are no integration points to be concerned about with 3rd party applications either, this is a very basic/vanilla Exchange 2003 setup.
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Top Expert 2010
Commented:
The downside of exmerging is they will be different exchange organisations so you won't be able to reply to any old internal emails.

You can do exmerge by following this guide: http://www.petri.co.il/brick_level_backup_of_mailboxes_by_using_exmerge.htm

then use the import-mailbox command to import into exchange.

I would definately favour co-existense

Author

Commented:
Thanks for the feedback demazter!  I never would have thought of the reply to old email issue.
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Top Expert 2010

Commented:
No problem, if you need any help just let me know

Author

Commented:
Thanks for the expert advice!  It's just what I needed.

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