Re: Ex2007 CAS OWA to Ex2k Mailbox server

We've also noticed to co-exist the CA works better when not also combined
with the Maibox role. A dedicated CA will service x7 and x3 servers fine.


"Bharat Suneja [MVP]" <bharatsuneja@xxxxxxxxxxx> wrote in message
news:O9kWz8pPHHA.2468@xxxxxxxxxxxxxxxxxxxxxxx
You can deploy Microsoft Exchange Server 2007 in an existing Exchange
Server 2003 or Exchange 2000 Server organization that is operating in
native mode. Coexistence with these two Exchange versions is supported.
The existing organization can contain Exchange 2003 servers, Exchange 2000
servers, or both versions.
http://technet.microsoft.com/en-us/library/aa998186.aspx

Also from the doc:
The Exchange 2007 server role features that are available to clients in
the Exchange organization during the coexistence period depend on the
version of the Exchange server where the user's mailbox is stored and the
version of the e-mail client application that is used to access Exchange.

Further:
Client Access Server Coexistence

The Client Access server role provides the functionality that was provided
by a front-end server in Exchange 2003. You must deploy the Client Access
server role is you have e-mail clients that access Exchange by using
Office Outlook Web Access, IMAP4, POP3, or mobile devices. The Client
Access server role can coexist with Exchange Server 2003 and Exchange 2000
Server servers.

From: http://technet.microsoft.com/en-us/library/bb124920.aspx

Deploy and configure Client Access servers. The first Exchange 2007 server
role that should be introduced into the organization is the Client Access
server. You must deploy the Client Access server role in each Active
Directory site that contains or will contain a Mailbox server. This does
not mean that every site must contain a Client Access server before you
can deploy Mailbox servers. Rather, it means that as each site is
deployed, the first role to be deployed is the Client Access server.
--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
www.exchangepedia.com/blog
----------------------------------------------



"Alan J. English" <aenglish@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:%239VAqJnPHHA.1252@xxxxxxxxxxxxxxxxxxxxxxx
Can I use an Exchange 2007 CAS for OWA to an Exchange 2000 backend? I
assume so as it will work with an Ex2k3 backend, but I haven't found
anything in writing yet.

Thanks!!!

Alan





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