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Upgrade 5.5/200 AD to co Exist

OK this is a good one, im looking for opinions on what others would do in this scenario.
I have 2 networks that at the moment are not connected but are in the same building. One is an old 2000 AD with Exch 5.5 running on it. The other is a new 2003 AD with exhcange 2003 and all is well. Thing is i know what to share information between these two networks both email and data shares. I want to share outlook taks between these networks etc etc.

Now i will be upgrading the 2000/Exch 5.5 domains to 2003 AD/Exch 2003/2007 but it would be how best to organise the internetowrk communication, just wondering has anyone completed something similar.

Also on old 2000 domain the local domain name i wish to change this time around but i would hope not to have go around all the pc's take them off the old domain and put them onto the new domain is this possible?

Or would i be better starting from scratch.

Cheers
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georgemildred
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georgemildred
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1 Solution
 
BusbarSolutions ArchitectCommented:
do you want to make them one domain, or make them 2 forest that coexist together?
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georgemildredAuthor Commented:
i would prefere to keep them as separate as possible but still be able to share the exchange stuff ie like scheduling tasks between users in both domains.

cheers
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BusbarSolutions ArchitectCommented:
I don't have any information about tasks synchronization between multiple forest... however you can umplement Calendar synch using the Calsynch tool.
for upgrading from 5.5 to 2007 you have to upgrade to 2003 first then move to 2007.
regarding change the name you can rename the domain : check my article below:
http://www.outlookexchange.com/articles/mahmoudmagdy/default.asp
you won't have to move over the pc's
the other approach is to create a new forest and use ADMT to migrate to it. there is so many ways just use you preffered method
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