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Exchange 2010 Coexist

Posted on 2012-12-26
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Last Modified: 2013-01-03
1. We are migrating from Exchange 2007 to 2010.  When installing the 2010 server, do the virtual directories for legacy redirection get automatically created? I don't see any documentation of having to manually set these parameters per Microsoft's migration guide, but I don't understand how Exchange 2010 would know to redirect to legacy.mail.com unless it automatically checks 2007's external namespace.

I did find in other (non-Microsoft) documentation that you set these settings manually with the following cmd:
Set-OwaVirtualDirectory -Identity "HO-EX2010-CAHT1\owa (Default Web Site)" -Exchange2003Url https://legacy.exchangeserverpro.net/owa 

If this is true, does this need to be set for each service (ActiveSync, OAB)?

2. Our mobile clients were set up manually, as in we do not have an external autodiscover dns entry. So each client is set with server mail.contoso.com with domain\user. Will we experience any problems when we rename the 2010 namespace? I would think it would just continue to connect to that url after we install 2010, and the clients would not know the difference.

We are planning on creating the external dns entry, but I need to know if the initial set up (using server url) will create any problems, as all documentation assumes mobile devices were set up using autodiscovery.
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Question by:schilste
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Akhater earned 500 total points
ID: 38722351
Set-OwaVirtualDirectory -Identity "HO-EX2010-CAHT1\owa (Default Web Site)" -Exchange2003Url https://legacy.exchangeserverpro.net/owa 


this is true you need to run this on your 2010 CAS for OWA coexistence, this works only for owa. you don't need to run anything for activesync or oab

for your second question i didn't understand what you mean by rename the 2010 namespace
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by:schilste
ID: 38722363
I just want to verify users will not have to change settings on their phones. Autodiscover was never set up externally, so users would have to manually enter the settings of the mail server.
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Expert Comment

by:Akhater
ID: 38722381
Once mail domain.com is pointing to 2010 and legacy .domain.com is pointing to 2007 you will need to fix the active sync url on 2007 for it to work seamlessly for both 2007 and 2010 users
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