Migrating to Exchange 2003 from exchange 2000 Questions

i have a client that has exchange 2k and he wants to add a exchange 2k3 server to the same exchange site and move mailboxes over gradually. questions are:

1) what happens to incoming mail from the outside? if mail gets accpeted by the exch 2k server wll it pss it off to the exch2k3 server if mail is intended for those test mailboxes that were moved that now exist on exch2k3.

2)is there anything that needs to bve done in outlook or once the mailbox moves it changes the server info in outlook when the system logs into the domain?

any other commenst questions or concerns are greatly appreciated.

Thanks
jlaveryAsked:
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Lee W, MVPConnect With a Mentor Technology and Business Process AdvisorCommented:
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jlaveryAuthor Commented:
helpful link. it clears up some question that where in my mind but not necessarily the ones i listed. and input on question 1 & 2 above
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mickinoz2005Commented:
Hi there,

If you move a mailbox outlook will automatically adjust itself to the new server as long as the existing server is still up and running.

In relation to your first question I would not be 100% sure about the mail but things I would check are when the servers are joined do you have two smtp connectors if not then I would say your email will just be delivered to the relevant mailbox no matter where it is. You could create a test mailbox and then move it and send mail, that will not affect any existing users.

Michael
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jlaveryAuthor Commented:
thank you for the comments..

one question regarding the msexchange.org article that was refereced. after the forest and domain prep for win2k3 & exch2k3 we go to install. Section III, steps 4thru 6. i have a exch2k server now with a win2k AD. i have a new server waiting for exch2k3. the terms install first exch2003 server and upgrade from exch exch2k native mode, scare me a bit as if the exch2k server may be adversly effected. the client wants this new exch2k3 server but they want to move mailboxes at thier own liesure not a big bang thing.. should i be concerned?

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mickinoz2005Commented:
Yeah you cannot put exch2k3 into native mode as you will cause problems with exch2k so it must stay in mixed mode. this way they should work together until client is ready to move, however if the site is not very large Moving in one go would be more suitable as this would not affect users at all. You would move all mailboxes say overnight or a weekend then move your public folders and connectors, then just leave old server alive until all users have logged in and migrated to new server. Then just get rid of the old server as per documentation on web.

However all that aside once you add the exchange 2k3 to existing 2k just leave its config as it is until you are ready to demote 2k server.

Michael
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Netman66Commented:
....And you don't want to upgrade - why?

It should be a straight-forward, inplace upgrade to 2003.

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jlaveryAuthor Commented:
its a done deal.. most helpful inproviding direction for this was leew's direction to the link @ msexchange.org.
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