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incoming mail with communication between exchange 2003 and 2010

Posted on 2012-12-26
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Last Modified: 2012-12-28
Hi there,

Since 2005, my company have one exchange 2003 on Windows 2003 Server. We use asso.local as domain. The format of the company is name@asso.org.

Recently, I decided to create a new forest/domain newasso. Local on Windows 2008 and Exchange 2010 environnement. IT is installed on recent and efficient hardware.

Now, I have one organization :
-      User uses mail with format as name@asso.org
-      One forest on Windows 2003 and Exchange 2003
-      One other forest on Windows 2008 and Exchange 2010
-      Incoming mails arrived on exchange2003

If I have well understood, Exchange 2010 uses cas for incoming mail and not smtp.
I need to have the both server  as the same time for 2 months.

If one mail is not for one user that is not on exchange 2003, I would like that mail is follow and manage by Exchange 2010. Please help me  

Sorry for my english !

Thanks,

Regards,

Simlip
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Question by:simlip
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LVL 15

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by:Rajkumar-MCITP
Rajkumar-MCITP earned 250 total points
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Author Comment

by:simlip
ID: 38722114
Hi
In fact
I would Like a solution as it was possible under exchange 2003 to transfer mail to transfzr mail of unknoW user to one other server.
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LVL 43

Accepted Solution

by:
Amit earned 250 total points
ID: 38722146
Any reason for cross forest migration or it just you decided to do. If you only decided, i might suggest to revisit this thought one more time, as cross forest migration is complex and tedious task.

Cross forest migration only required, if you have any merger with different company etc. Else do the simple transition in current environment.

If you really want to do cross forest migration, then play in a lab for few weeks and then only plan in a production env.
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Author Comment

by:simlip
ID: 38726363
Hi
Thanks for you reply.
I am fowoling your advice.
Hovewer, it is not better to have a Domain controller with Windows 2008 instead of windows 2003 ?
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