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Exchange 2007 OWA over 2 Sites

Posted on 2009-05-07
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Last Modified: 2012-05-06
Hi All,

Exchange is already up and running in one of AD Sites (US). Yesterday, I installed another instance of the exchange server in a different site (UK). All appears well so far, except:

When I launch OWA from the new UK box, and try to login to a mailbox hosted in the US site, I get the following error:

Outlook Web Access is not available for the user mailbox that you are trying to access. If the problem continues, contact technical support for your organization and tell them the following: A Microsoft Exchange Client Access server in the mailbox Active Directory site is incorrectly configured for service discovery. The host name entry should be in the format "http<s>://<host name>[:<port>]/owa", but is stored as "https://usowa.xxxdomainremovedxxx.com/".

Does anyone know what could be causing this? I assumed the browser would redirect to the US OWA URL and log me into the mailbox?

Mant thanks,

Pete
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Question by:PeterHing
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by:aletjolly
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Hello,
Kindly give me a brief description about the topology you are having:
I mean how many sites?
How many servers in each site and what are their roles?
What are the authentication enabled on OWA in each site?
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by:PeterHing
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Hi aletjolly - Thanks for your reply:

6 AD Sites, only 2 with exchange installed (US & UK).
1 Exchange server in US and UK each running 3 roles (CAS, Hub and Mailbox)
Authentication is forms-based (Username Only) for both
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by:aletjolly
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There should be an attribute for the OWAVirtualDirectory viz "ExternalURL", kindly telll me are they pointing to the respected external URLs of the siteand not internal URL
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by:PeterHing
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Yes - the URLs on the US box are all correct and say
"https://usowa.mydomain.com"

We have an internal DNS record that allows the URL to be resolved internally, hence why they are both the same.

Points to 400
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aletjolly earned 400 total points
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Peter, I believe the URL should "https://usowa.mydomain.com/owa"
Also I am not sure what exactly you mean by "Points to 400"
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by:PeterHing
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That was it - thank you. The URL was missing the /OWA in exchange. The reason I couldn't see it working was because when you make the change in exchange - you have to wait for AD to replicate the changes across all sites (15 / 20 minutes).

Points to 400 mean the question was originally set at 300, but because the question was getting longer - I increased them.

Thanks again!
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