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will exchange server 2003 work with exchange 2000

hi all

i have a remote office and all our company's emails are relayed through the exchange 2000 server remote office. now we are planning to upgrade our server to exchange 2003 and they will keep it as exchange 2000. do u think there would be any compatibilty issues?
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feline78
Asked:
feline78
3 Solutions
 
Pete LongTechnical ConsultantCommented:
well my Exchange 2003 Enterprise Server runs on Server 2000 so the answer is YES :)
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Pete LongTechnical ConsultantCommented:
and in answer to the above Exchange 2000 will co exist in the same Exchange org with Exchange 2003 :)
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feline78Author Commented:

hi petelong

do u have any links/documents stating this so i can submit the management? i looked around but not getting any
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kairenyCommented:
Hi,

PeleLong is right,

this site is in French, but you can see prerequisites and recommanded OS for Exchange server  2003
translation : "Configuration requise" : Prerequisites.    and "recommandations" = recommanded.)

http://www.microsoft.com/france/exchange/decouvrez/configuration.asp

Hope this helps,

Regards,

Kaireny.
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kairenyCommented:
ok, i got it in english :)


http://www.microsoft.com/exchange/evaluation/sysreqs/2003.mspx

Regards,

Kaireny.
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gpriceeeCommented:
You can run Exchange 2000 and 2003.
The link for management is : http://support.microsoft.com/kb/327779

Exchange 2000 and Exchange 2003 Mixed Mode
An organization running in mixed mode can accommodate all versions of Microsoft Exchange. By default, Exchange 2000 and Exchange 2003 is installed in mixed mode.

Exchange 2000 and Exchange 2003 running in mixed mode is subject to the following limitations: • Exchange Server 5.0 and 5.5 sites are mapped directly to administrative groups.
• Administrative groups are mapped directly to Exchange Server 5.0 and 5.5 sites.
• Servers cannot be moved between administrative groups.
• Routing group membership consists only of servers that are installed in the administrative groups.
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Exchange 2000 and Exchange 2003 Native Mode
An organization running in native mode can accommodate only Exchange 2000 or Exchange 2003 computers. New Exchange Server 5.0 or 5.5 computers cannot be introduced into the organization.

You can switch an Exchange 2000 or Exchange 2003 organization to native mode after all of the servers in that organization are upgraded to Exchange 2000 or Exchange 2003. You cannot switch to native mode until you either upgrade or decommission all earlier versions of Exchange Server.

The following are some of the features of Exchange 2000 and Exchange 2003 native mode: • Support for multiple routing groups within a single administrative group.
• Routing groups can consist of servers from multiple administrative groups.
• Ability to move servers between routing groups.
• Ability to move mailboxes between servers in different Administrative Groups within an organization.
• Simple Mail Transfer Protocol (SMTP) is the default routing protocol.
• An administrative group does not have to contain any routing groups and a server can belong to an administrative group without belonging to a routing group within that administrative group.
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Pete LongTechnical ConsultantCommented:
ThanQ
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