Re: Exchange 5.5 and windows 2003 native mode

From: Ed (Ed_at_discussions.microsoft.com)
Date: 09/24/04 

Date: Fri, 24 Sep 2004 14:15:01 -0700

would it be ok if we were only a single domain

"Jaclynn Hiranaka [MSFT]" wrote:

> From 295922 Considerations when you upgrade to Exchange 2000 Server
> http://support.microsoft.com/?id=295922
> ===============================
> It is recommended that at least one Active Directory domain operate
> in native mode. This permits Exchange Server 5.5 distribution lists
> (DLs) to be mapped across to Universal Distribution Groups (UDGs) and
> Universal Security Groups (USGs) in Active Directory. The Active
> Directory Connector (ADC) is hard-coded to create UDGs, but the
> Exchange 2000 information store can and will convert these to USGs on
> an as-needed basis. You can configure a secondary recipient connection
> agreement to replicate only DLs to the target native mode domain where
> USGs can exist. If UDGs exist in a mixed-mode domain, they cannot be
> converted into USGs, and your public folder permissions will not work.
> =====================================
>
> The same is true for Exchange 2003. Although you can use DLs in 5.5 for
> permissions on public folders and mailboxes because Exchange 200X is so
> integrated into AD only Security groups can be used for permissioning. If
> you are not in native mode for Windows the ACLs that you have set on
> mailboxes and public folders by DL in 5.5 will not be properly converted and
> you will break permissions on those objects.
>
> The best method is the one described above where you have a native mode
> domain in your forest and to migrate DLs there from 5.5.
>
> --
> Hope that helps.
>
> -------------------------
> Jaclynn Hiranaka
> Enterprise Messaging Support
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
> © 2004 Microsoft Corporation. All rights reserved.
>
>
> "Ed" <Ed@discussions.microsoft.com> wrote in message
> news:D9ABCFA1-DB31-4B7C-8852-CEB9293E7283@microsoft.com...
> >I heard on this site that you should have windows 2003 in native before
> > migrating from exchange 5.5 to exchange 2003, is this true? What would
> > happen
> > if you did do it in mixed windows 2003 mode?
>
>
>

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