The requirements are as follows:
OS ADEnv
---------------------+------------+-----+-----------+------
ExchangeVer W2k + SP3 W2k3 W2k + SP3
W2k3
Exchange 5.5 + SP3 Yes No NA NA
Exchange 2000 + SP2 Yes No Yes Yes
Exchange 2000 + SP3 Yes No Yes Yes
Exchange 2003 Yes Yes Yes Yes
Well that's messy.... the full compatibility guide can be found here:
http://www.microsoft.com/exchange/evaluation/TiWin2003.doc
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim
Kennedy
Sent: Tuesday, May 25, 2004 12:42 PM
To: Exchange Discussions
Subject: RE: Design Question
Let me take this one step further since it appears I am mistaken on the
requirements for Exch. 2003. The requirement is for 2003 server, and not
2003 AD? So we could run the front end on a member server and
move/upgrade the back end to Exh 2003 on 2003 member servers?
JK
-----Original Message-----
From: On Behalf Of Stidley, Joel
I assumed that when you said "Updating the 2000 Domain at this point is
not an option." You mean updating your domain controllers to Windows
2003 and raising the domain function level to Windows 2003 mode. There
are benefits to doing this but it isn't required to using Exchange 2003
front-end servers. You can install Exchange 2003 front-end servers in
the same admin group as the current Exchange 2000 servers. As Andrey
mentioned, though this will require a schema update.
Also as Tim said you are required to have both a front-end (since you
can't install/upgrade Exchange 2003 on a backend if there are Exchange
2000 front-end servers in the admin group) and backend that has Exchange
2003 on it in order to have the new OWA features.
HTH
Joel
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