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Two domains not trusted and Out of Office on Exchange 2007

Posted on 2009-07-01
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Last Modified: 2012-05-07
I have some users that are members of  a small business domain,  I migrated their Exchange mailboxes to another 2003 domain running Exchange 2007.  These users are still logging into the small bz domain and have Outlook 2007 setup to connect to the  2003 domain with an exchange 2007 server.  Out of office and free busy does not work.  When trying to open Out of office this error comes up "Your Out of Office settings cannot be displayed, because the server is currently unavailable. Try again later".  It can be accessed from outlook web access.

Based on what I've found the issue is a result of the users being logged into one domain but accessing a mailbox in another that is a separate, untrusted domain.  Can anyone confirm with this exact scenario meaning 2 separate domains and accessing exchange from one to the other.  Are there any workarounds?  
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Question by:dmwynne
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by:Mestha
ID: 24758949
The issue you are seeing is the inability for the Outlook client to connect to the availability service, which is run through Autodiscover service in Exchange 2007. As you cannot connect to two separate Exchange orgs in the same Outlook profile, I don't think the problem is with the users logged in to another server.

Does Autodiscover work?

Simon.
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by:dmwynne
ID: 24759423
I created a new profile for all these users that connects to the new exchange 2007 server in the other domain.  When I did this autodiscover worked in setting up the profiles.  Autodiscover works for other users that are not part of the sbs domain with the problem.  Ill have to test it again to verify.
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by:dmwynne
ID: 24763362
Autodiscover works.  Note that I when I run autodiscover for these users I use the new domain email address or else it won't work.  But that is normal as I did not setup the old domain in autodiscover but I did setup exchange to accept mail for the old domain and these users have their reply address set to the old domain ie user@smallbizdomain.com

 Let me add this though.  On one of these machines yesterday I was testing some things and I tried to use "run as" to start outlook and provided the credentials for the NON Small biz domain which are the same credentials used in the outlook profile.  I could not start outlook because the credentials used were for the other domain and small biz domain controller obviously could not use them.  Does outlook use the domain credentials at all in terms of free busy, out of office...If it does then this would explain the failure.
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dmwynne earned 0 total points
ID: 24908678
This is most certainly an issue of the two domain.  It works fine with the same user if they are on a non-domain machine or are a part of the Windows 2003 domain.
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