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After configuring Ad Sites Exchange gives error on owa

Posted on 2011-04-26
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Hi

Previously we had just the default first site will all DCs in there.
So I set up the subnets and created 3 sites and placed the DCs in there.
Mail and everything works.
However I just found out about a issue that surfaced.
When I access my owa it works when someone from another site tries they get the following error
"A server configuration change is temporarily preventing access to your account. Please close all Internet Explorer windows and try again in a few minutes. If the problem continues, contact your helpdesk."

Site 1

Server 1 - HT/MB/CAS - Outlook Anywhere - Enabled
Server 2 - HT/MB/CAS - Outlook Anywhere - Disabled
Server 3 - HT/MB/CAS - Outlook Anywhere - Disabled
Server 4 - HT/MB/CAS - Outlook Anywhere - Disabled

Site 2
Server 5 - HT/MB/CAS - Outlook Anywhere - Enabled

Site 3
Server 6 - HT/MB/CAS - Outlook Anywhere - Enabled
Server 7 - HT/MB/CAS - Outlook Anywhere - Disabled

I think I need to use proxying but to be honest Im not that good with Exchange.
Im running Exchange 2010 with AD 2008 R2

Thanks , let me know if you need any further information.
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Question by:eugene20022002
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by:e_aravind
ID: 35475399
Check on the internet-facing CAS server application logs
That will clearly indicate if there is any auth. mismatch\differences
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eugene20022002 earned 0 total points
ID: 35477521
I sorted it out yesterday.
 Basically I read up about configuring the non internet facing cas servers as proxies.
did that for the owa and ecp.
What I forgot to do though was changed the authentication type to intergrated. After an iisreset /noforce all was well after about 10min. for some reason it didnt work immediatly , but after a few mins it was fine.

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by:eugene20022002
ID: 35477553
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by:eugene20022002
ID: 35503376
resolved the issue myself by reading up on technet .
http://technet.microsoft.com/en-us/library/bb310763.aspx
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