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How do you do....it? Thread, Exchange 2003 and Exchange 2007 in Technical; Hi, I have a new server which i am going to install Exchange 2007 on. I have an existing server ...
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    Exchange 2003 and Exchange 2007

    Hi,

    I have a new server which i am going to install Exchange 2007 on. I have an existing server with Exchange Server 2003 which is on a different domain.

    Can i migrate the mailboxes from the 2003 to the 2007?

    Faza

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    SYNACK's Avatar
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    Is there a domain trust between the two domains, you may be able to use the migration wizard to export .pst files from the old server and then back into the new one if the usernames are the same.

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    I can create a trust, so you think i would be able to do it?

    Do you advise to install Exchange 2007 on the new server.

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    Do you need a domain trust if you are going to export as PST? I thought you could just export (using exmerge will make it easy) and then import to the new domain

    You'll lose single instance storage for existing messages if you do this - might not matter but could make your mail store grow.

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    If you don't want the trust there anyway I would suggest attempting using the migration wizard method first as it would possibly be easier but it will loose all mail rules.

    Otherwise this may help when doing it cross forrest:
    You Had Me At EHLO... : Exchange 2007 Cross Org Mailbox Migration

    You could go to 2007 on a VM in the first domain then do this to transfer it:
    How to Restore a Mailbox Database to a New Server with Database Portability

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    If i use Exmerge will that copy all mail, calendar, tasks everything across.

    Can i not use a wizard?Or due to the new server being on a domain it is not possible.

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    Quote Originally Posted by faza View Post
    If i use Exmerge will that copy all mail, calendar, tasks everything across.

    Can i not use a wizard?Or due to the new server being on a domain it is not possible.
    Exmerge is the same thing as the migration wizard, it will copy everything in the users exchange accounts over apart from any mailbox rules that they have set up.

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    SYNACK - Will it lose anything else apart from the rules? Would i need to keep the existing server on the old domain and use the new server to run the wizard?

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    Quote Originally Posted by faza View Post
    SYNACK - Will it lose anything else apart from the rules? Would i need to keep the existing server on the old domain and use the new server to run the wizard?
    It may loose the signature blocks when transferred using this method.

    First you run the export on the old server which will make a pst file for each user and store that in a location that you specify.

    Next you copy those files to somewhere that the new server can access them and run the wizard on the new server in import mode and point it as the PST files that the original server created.

    The two servers do not even have to be able to talk to each other in this case as it just uses the files.

    This will not transfer AD user accounts though so each of the users being transfered will need a new account with the same name on the new domain for the mailbox to be attached to.

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    Can you not perform a normal migration? If i put a trust between the two servers?

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    Quote Originally Posted by faza View Post
    Can you not perform a normal migration? If i put a trust between the two servers?
    I think so, have a read of this site from my post above:
    You Had Me At EHLO... : Exchange 2007 Cross Org Mailbox Migration

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    Ok i will go ahead and install Exchange 2007 now on the new server.

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    its not pretty but i would only use exmerge for moving data across.
    i have installed (reinstalled) various exchange 2003 servers using exmerge.

    i also use it for backing up exchange mailboxes.

    One thing you need to know before you exmerge and this is very very important.

    The old server probably has mailbox limits as its been in a while some people may have the limits tweaked from the defaults so someone may have a 1gb mailbox IF you use exmerge and import the mailbox to the new server the new servers limits on mailbox sizes need to be set higher than the sizes of the mailboxes otherwise it will just import the limit set in exchange and not do the rest. it may sound obvious but it had me confused for a while.

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    SOSAGES - Can i not use the wizard make life easier :-)

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    well ok then.



    But just this once.

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