Hi,

I am planning to migrate user from Exhange 2010 to exchange 2013 server which i setup recently. I have below queries before i move the users.

1. how can they will access OWA after moving to Exchange 2013 with co-existence environment.

2. which OWA site will be primary at this stage (Exchange 2010 or 2013)? 

3. how should i set proxy for OWA redirection when user trying to access other version site.

4. What all DNS changes internally and external i need to perform to move all the services to Exchange 2013 server. 

any help would be apprec

Follow : https://technet.microsoft.com/en-us/office/dn756393.aspx?f=255&MSPPError=-2147217396

Exchange Server Deployment Assistant

Hi,

I would answer your question one by one:

1. how can they will access OWA after moving to Exchange 2013 with co-existence environment.

A: When user access the mailbox which is located in exchange 2010 from OWA 2013 URL, CAS2013 will proxy the request to CAS2010.

 

2. which OWA site will be primary at this stage (Exchange 2010 or 2013)?

A: Exchange 2013. Because exchange 2010 cant process the request about exchange 2013.

 

3. how should i set proxy for OWA redirection when user trying to access other version site.

A: If you want to set proxy between OWA 2010 and OWA 2013, please run the following commands:

For Exchange 2013:

Set-OwaVirtualDirectory -Identity "Exchange2013_CAS_Server_Name\OWA (Default Web Site)" -InternalURLhttps://mail.domain.com/OWA -ExternalURL https://mail.domain.com/OWA

For Exchange 2010:

Set-OwaVirtualDirectory -Identity "Exchange2010_CAS_Server_Name\OWA (Default Web Site)" -InternalURLhttps://fullyqualifiedcomputername/OWA -ExternalURL $Null

Then when the external Exchange 2010 users access the OWA from https://mail.domain.com/OWA, Exchange 2013 will authenticate the user and proxy the request to Exchange 2010 automatically.

 

4. What all DNS changes internally and external i need to perform to move all the services to Exchange 2013 server.

A: Change all internal and external URLs to use mail.domain.com for all services in Exchange 2013. Keep the internal URLs to use the Exchange 2010 FQDN and change the external URLs to $NULL.

For DNS configuration, we need to publish the following DNS records:

Internal DNS

mail.domain.com	Point to Exchange 2013 server
autodiscover.contoso.com	Point to Exchange 2013 server

External DNS

mail.domain.com	Point to TMG Listener (Exchange 2013)
autodiscover.contoso.com	Point to TMG Listener (Exchange 2013)

 

For detailed information about the proxy and redirection, please refer to :

http://blogs.technet.com/b/exchange/archive/2014/03/12/client-connectivity-in-an-exchange-2013-coexistence-environment.aspx   

https://technet.microsoft.com/en-us/library/bb310763%28v=exchg.141%29.aspx?f=255&MSPPError=-2147217396    

Regards,

David

Hi,

I would answer your question one by one:

1. how can they will access OWA after moving to Exchange 2013 with co-existence environment.

A: When user access the mailbox which is located in exchange 2010 from OWA 2013 URL, CAS2013 will proxy the request to CAS2010.

 

2. which OWA site will be primary at this stage (Exchange 2010 or 2013)?

A: Exchange 2013. Because exchange 2010 cant process the request about exchange 2013.

 

3. how should i set proxy for OWA redirection when user trying to access other version site.

A: If you want to set proxy between OWA 2010 and OWA 2013, please run the following commands:

For Exchange 2013:

Set-OwaVirtualDirectory -Identity "Exchange2013_CAS_Server_Name\OWA (Default Web Site)" -InternalURLhttps://mail.domain.com/OWA -ExternalURL https://mail.domain.com/OWA

For Exchange 2010:

Set-OwaVirtualDirectory -Identity "Exchange2010_CAS_Server_Name\OWA (Default Web Site)" -InternalURLhttps://fullyqualifiedcomputername/OWA -ExternalURL $Null

Then when the external Exchange 2010 users access the OWA from https://mail.domain.com/OWA, Exchange 2013 will authenticate the user and proxy the request to Exchange 2010 automatically.

 

4. What all DNS changes internally and external i need to perform to move all the services to Exchange 2013 server.

A: Change all internal and external URLs to use mail.domain.com for all services in Exchange 2013. Keep the internal URLs to use the Exchange 2010 FQDN and change the external URLs to $NULL.

For DNS configuration, we need to publish the following DNS records:

Internal DNS

mail.domain.com	Point to Exchange 2013 server
autodiscover.contoso.com	Point to Exchange 2013 server

External DNS

mail.domain.com	Point to TMG Listener (Exchange 2013)
autodiscover.contoso.com	Point to TMG Listener (Exchange 2013)

 

For detailed information about the proxy and redirection, please refer to :

http://blogs.technet.com/b/exchange/archive/2014/03/12/client-connectivity-in-an-exchange-2013-coexistence-environment.aspx   

https://technet.microsoft.com/en-us/library/bb310763%28v=exchg.141%29.aspx?f=255&MSPPError=-2147217396    

Regards,

David

• Marked as answer by Simon_WuMicrosoft contingent staff, Moderator Tuesday, June 02, 2015 9:55 AM

Thank you David for your detailed explanation.