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MM&M UG UK » Exchange 2003 » Migration » Mail forward from Exchange 2003 to Exchange 2007 between cross Forest

Mail forward from Exchange 2003 to Exchange 2007 between cross Forest

Last post 07-03-2008, 11:06 by nathanwinters. 1 replies.
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  •  06-19-2008, 9:56 13885

    Mail forward from Exchange 2003 to Exchange 2007 between cross Forest

    Reply Quote
    We have a below scenario at a customer.
     
    Customer has exchange 2003 organization for eg. exchange.abc.com (external domain name @contoso.com). Now customer have created a new Exchange 2007 organisation for eg. exchange1.xyz.com. Customer would like to move/migrate few mailboxes from 2003 to 2007. These moved/migrated mail boxes should be able to send and receive emails to Exchange 2003 and Internet.
     
    All external emails are delivered to Exchange 2003.
     
    My questions are:
    1. Would you move the mailbox or migrate the user account and mailbox from 2003 to 2007?
    2. How will you ensure external emails are delivered to Exchange 2007 for moved/migrated mailboxes? (configure send connectors?)
    3. How do you configure 2007 organisation users to use external domain name? (shared SMTP namespace?)
    4. ILM will be used for GALSync. What are the attributes we need to synchronise to ensure both systems function (TargetAddress, LegacyExchangeDN?)
    I would appreciate if you could forward me any documents/information you may already have to me.
     
    Also, if there is anyone out there who has done this and if there are any caveats/lessons learnt.
     
     
    Thanks in advance.
     

  •  07-03-2008, 11:06 16269 in reply to 13885

    Re: Mail forward from Exchange 2003 to Exchange 2007 between cross Forest

    Reply Quote

    Hi,

    So you have a separate forest.

    Will this just be a resource forest for Exchange or will it replace the existing forest?

    If resource forest then you need linked accounts if not then you need to start migrating the accounts using something like ADMT

    Send connectors with contacts in the original org would work for mail routing, or you could use Quest tools which can handle this for you.

    I'm afriad I haven't done a forest sync like this with ILM sorry

    Nathan

    Nathan Winters - MVP Exchange Server
    MCSE & MCSA 2000 & 2003 + Messaging, MCITP Exchange 2007, MCP, VMWare VCP v2 & v3.

    Welcome to the Microsoft Messaging and Mobility User Group: http://www.mmmug.co.uk
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