Re: Exchange 5.5 to 2003 in a different domain

From: Steven Halsey [MSFT] (Stevhal_at_Online.Microsoft.com)
Date: 10/12/04 

Date: Tue, 12 Oct 2004 10:23:26 -0700

Yes taking Domain A to Native Mode, installing Exchange to this Domain and
hosting all your distribution groups in Domain A as Universal
Distribution/Security Groups should work. If you have DLs in Domain B
Exchange recommends they be Universal Distribution Groups until it is
switched to native mode.

I know of no ill effects of taking Domain A to native mode and leaving
Domain B mixed mode. So you should be safe to make this switch of Domain A
to Native Mode. 

-- 
Steven Halsey
Stevhal@online.microsoft.com
Microsoft Exchange
Please do not send email directly to this alias.  This alias is for
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This posting is provided "AS IS" with no warranties, and confers no rights.
"Dave" <hdpunk@hotmail.com> wrote in message 
news:tIOdnRkL1tkVqPrcRVn-hg@adelphia.com...
> "Steven Halsey [MSFT]" <Stevhal@Online.Microsoft.com> wrote in message
> news:OF9chUZrEHA.2008@TK2MSFTNGP12.phx.gbl...
>> The recommendation is that you have 1 Windows Native Mode domain 
>> somewhere
>> in your forest.  This is to avoid certain issues that arise from Group
>> membership.   Exchange 2003 can be installed into a domain which is not
>> Native Mode, there may be some issues with Windows Groups though.
>>
>> The best case for you would probably to take Domain A to native mode, and
>> install Exchange 2003 in this domain to join the 5.5 server in Domain B.
>>
>> Staying in Interim mode you should look into these KB for public folders:
>>
> http://support.microsoft.com/default.aspx?scid=kb;en-us;328880&Product=exch2003
>>
> http://support.microsoft.com/default.aspx?scid=kb;en-us;274046&Product=exch2003
>>
>> All of your Distribution list should remain as Universal Distribution
> lists
>> until you have a Windows Native Mode domain to use for Universal Security
>> Groups.
>
> Thank you for the quick response.
>
> There are no added public folders in this organization so I assume those 
> KB
> articles won't apply. As for Distribution lists, if I get Domain "A" to
> Native Mode and install Exchange 2003 to "A", I shouldn't have those
> problems either (??)
>
> Finally - just so I understand... I can safely change the functional level
> of my Domain "A" to Native Mode without affecting Domain "B" (ie: Domain 
> "B"
> stays in Interim Mode)? That is the option I'd like to take since pulling
> the last BDC from Domain "A" will be simple.
>
> --Dave
>
>

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