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Exchange 2010 OWA does not work internally inside domain

Posted on 2014-04-21
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Last Modified: 2014-05-16
Providing directions is appreciated....

Error:
Exchange 2010 OWA does not work inside the domain.  Getting the generic page cannot display error in any browser.  Even after clearing cache, history, etc. and flushdns.  OWA works externally. Also, when I login with an account on one server, I get "A server configuration change is temporarily preventing access to your account. Please close all Web browser windows and try again in a few minutes. If the problem continues, contact your helpdesk."

Background:
We have 2 exchange 2010 servers [example... EX1 and EX2] in our environment and Godaddy SSL configured correctly.  Both Exchange servers are with the same build version.  All is working fine until recently.  DNS is also hosted by Godaddy with [example... mail.domain.com] A host point to our exchange server.  

In OWA settings, EX1 wih Internal URL EX1.domain.com/owa, EX1.domain.com/ecp, and External URL https://mail.domain.com/owa.  EX2 also has Internal URL EX2.domain.com/owa, EX2.domain.com/ecp, and External URL https://mail.domain.com/owa. https://mail.domain.com/owa.  Both server set to domain authentication (suspecting something here).

Notes:
Within the domain, we used to be able to go to https://mail.domain.com/owa/ on any browser and login to owa.  Same with our internal WiFi within the domain.  

I may have missed some info but any assistant on pointing me in the right direction would be appreciated.  TIA
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Question by:gbksphere
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Gareth Gudger earned 500 total points
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So, you were able to use your external address internally?

Do you have split-brain DNS configured? If so, any changes here to A records or IP addresses.

Have you tried reconfiguring OWA for Basic Authentication?

What happens if you change the Internal URL of OWA to match the External URL?
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by:gbksphere
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Thx for response..

So, you were able to use your external address internally?
No

Do you have split-brain DNS configured? If so, any changes here to A records or IP addresses.
Not sure what you mean by split-brain DNS.  No changes to A records or IP addresses.

Have you tried reconfiguring OWA for Basic Authentication?
I have not tried Basic Authentication since it has always worked with the current setup.

What happens if you change the Internal URL of OWA to match the External URL?
I did not tried but my logic tells me that it will not matter since it just an URL to https://mail.domain.com/owa from within the organization.  Although I would like to keep it standard with the local address as defaulted by Exchange, I will try to change it to see what it does.
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by:Gareth Gudger
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You mentioned you could use mail.domain.com internally on your domain. So this is not the case? You used the internal URLs to access OWA internally? e.g. ex1.domain.com.
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Author Comment

by:gbksphere
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I have since resolved my issue.

@diggsaur
Repped.  Although your suggestions did not resolve my issue with my current state of configuration, I do appreciate and thank you for the response.  I'm sure there are multiples ways to configure Exchange.  In my situation, I certainly do not want to alter any configs that we have configured known to work (for our environment) for years.

@experts-exchange.com
Is the community getting smaller or anticipation to the forum have decreased?  Of thousands and thousands of members, i have 1 response to my fairly common Exchange question.  Just a thought..
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Author Closing Comment

by:gbksphere
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THX @diggsaur
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Expert Comment

by:Isabel Fernandes
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how did you resolve it? I'm having the same issue. I can login to OWA, I'm domain Admin, but normal users can't. If I type in the wrong password it does not like it though.
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