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get outlook certificate error after upgrade from Exchange 2003 to 2010

Posted on 2010-09-01
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Last Modified: 2012-05-10
i have recently upgrade my company to exchange 2010 from exchange 2003. Ever since upgrade i keep getting this error i have attached the file
But in  a nutshell the error say " the name on the security certificate is invalid or does not match the name of the site"
I have 2 server in a DAG with 2 servers Ex1 (10.1.1.7) and Ex2 (10.1.1.8)  and the cas array with a host name of Cas.domain.com pointin to the CAS ip of 10.1.1.6. When people want to access OWA from outside the company or inside they go to mail.domain.com.
Outlook is using the cas array host to connect to the mailboxes.

But we keep getting this message for users with outlook 2007,  attached to this question
we've tried this http://support.microsoft.com/kb/940726 but to no avail.

Any other ideas will be appreciated


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Question by:cchibonga
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Expert Comment

by:kpoochi
ID: 33582226
Check the whether the same certificate is installed on both the CAS servers in the CAS array and name matches the Outlook URL's
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LVL 9

Expert Comment

by:v_9mhdrf
ID: 33583205
Please follow the article:- support.microsoft.com/kb/940726 and set the InternalUri.
Once you do that, please run test-outlookwebservices | fl and check for the successfull message. And if you get any errors please revert back so thatw we can assist you further.
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Author Comment

by:cchibonga
ID: 33584041
Kpoochi
The certificate installed on the servers is for MAIL.DOMAIN.COM but the outlook URL is CAS.DOMAIN.COM do you think that is what is causing the problem? Do we need to change the Cas array name to match the certificate as in mail.domain.com?
Let me know if that is the fix and if changing the outlook URL will be updated automatically to all Outlooks. or do we have to go and manually change it.

thanks.
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Accepted Solution

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cchibonga earned 0 total points
ID: 33801766
I got it fixed. I went ahead and run the same commands as the ones in this article.
 http://support.microsoft.com/kb/940726
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