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Enterprise Software Thread, Exchange 2003 > 2010 Query in Technical; We have 2010 Exchange setup along side our existing 2003 Exchange box, I have a test account on 2010 and ...
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    Exchange 2003 > 2010 Query

    We have 2010 Exchange setup along side our existing 2003 Exchange box, I have a test account on 2010 and it all works tidy, As part of the migration you have to convert the OAB/Recipient policies and Address books into the new 2010 format.

    Will this then render account creation useless via 2003? Will 2003 users still see the address books - presumably over the routing connector they will?

    Basically at what point are we forced to move to 2010 for user account management, and how necessary is migrating the mailboxes at this point? Ideally I want to migrate people as and when rather then in bulk.

    Cheers!
    Last edited by PRicho; 11th March 2011 at 11:36 AM.

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    tarquel's Avatar
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    Does the Exchange Server Deployment Assistant tool (Exchange Server 2010: Exchange 2010 SP1 Help) give u any help with that?

    I'm afraid I havent gone from one version of Exchange to another so I've not really looked into how it works, but this tool might help a bit perhaps (if you havent seen it already).

    Cheers

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    Hi

    If you're moving to 2010 from 2003, during co-existence, you should continue to manage 2003 object from systems manager (2003) and 2010 objects from (2010 EMC/EMS). This is best practise. You may be able to manage 2003 objects from 2010 but not the other way round.

    When manaing OAB/Address lists/RUS etc...I would continue to leave them roles in 2003. 2010 will use the availabilty service too. Also, depends on what MAPI clients you have deployed.

    Also, mail-enabled groups (Sec/DL/DDL etc..) must not have illegal characters in the name. This will not work and 2010 will give you warnings.

    2003 users will see the GAL, as well as 2010. In addition to the GAL, there are complications with OAL. Also, you need to consider F/B for users on both 2003 and 2010.

    You are fine with migrating users over a period of time.

    Regards
    Sukh

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    But without any 2010 compatible recipient policies when I migrate users it won't auto generate the same email addresses will it?

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    tarquel's Avatar
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    what format do u use?

    In the EMC, go to Org Configuration > Hub Transport > E-Mail Address Policies

    In there, you can create one (i left the default one, and made a new specific one for the job - i.e. Users with Exchange mailbox > First.Last name for exchange mailboxes in our case.

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    Standard format really, thats all my query was i guess. Is it worth migrating and what are the effects to 2003, or should I just generate 2010 Versions from scratch.

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    tarquel's Avatar
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    I'd suggest running through that MS tool i mentioned in my first reply, to see if that can shed any light on whats best to do.

    Sukh would be able to suggest more as he's likely done it.

    Cheers

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    Hi

    Migrated users will be stamped with the Exchange 2003 Recipient Policy. In a co-existing environment with Exchange 2003 and Exchange 2010, The Default Policy in Exchange 2010 is the legacy from Exchange 2003. There is no need to create Exchange 2010 E-mail Address Policies.

    Any new users created on 2010 will be stamped with the Exchange 2003 policy.

    You can change the Exchange 2010 policies after you plan to decommsion your last Exchange 2003 server.

    Sukh



    3. Default Policy is used for the migrated users and the newly created users in Exchange 2010 by default.



    If you would like to change the default policy settings, you have to upgrade by running 'Set-EmailAddressPolicy' cmdlet as below in EMS as it was created with legacy version of Exchange.



    Set-EmailAddressPolicy “Default Policy” -IncludedRecipients AllRecipients

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