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Exchange 2007 pass-through authentication support?

Posted on 2007-11-30
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Last Modified: 2013-12-08
Hello Experts,

I recently added an Exchange 2007 Ent. server into our domain which was using Exchange 2003.  Currently, both the Exchange 2007 and Exchange 2003 servers are coexisting.  I have moved all mailboxes and OWA to the Exchange 2007 server.  I plan on decomissioning the Exchange 2003 server in a few weeks once I'm satisfied with the transition.

Everything is going well, except for one issue.  Prior to the transition, we had pass-through authentication enabled for OWA 2003 for our internal users.  Since the change, it appears that pass-through authentication no longer works for OWA 2007.  Is pass-through authentication supported in Exchange 2007 OWA? If so, how do I enable it?  We are using IE7 domain wide.

I am hoping one of you experts can help.  Thanks in advance.
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Question by:UHCDIT
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Sembee earned 125 total points
ID: 20383843
You can have integrated authentication, or you can have the forms based authentication, but not both. That is set on the properties of OWA through Exchange Management Console, under Server Config, Client Access.

If you want to provide forms based authentication for external access then you will have to go down the two sites route.
I have outlined how to setup a second web site as part of my SSL certificate blog posting: http://www.sembee.co.uk/archive/2007/01/21/34.aspx

Also note that the use of pass through authentication can vary on the browser configuration. In Internet Explorer look to see whether it classifies the OWA site as Intranet or Internet - pass through doesn't work on the Internet.

Simon.
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Author Comment

by:UHCDIT
ID: 20384241
Thanks.  I was able to use two sites (one for internal / one for external) and configured the internal site to use integrated windows authentication and the external to use forms-based authentication.

The configuration is working fine.  Thanks.
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