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SBS Server and Office 365

Posted on 2016-11-04
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Last Modified: 2016-11-04
Just took on a client who uses SBS Server 2008. Their prior IT admin moved their email from on premises to Office 365. When the users now open Outlook they get a Security Alert: remote.xxxxxxx.com Information you exchange...The security certificate was issued by a company you have not chosen to trust. View the certificate to determine whether you want to trust the certifying authority.

When the click yes to proceed, Outlook functions properly and they receive/send email without issue all day.

How do I resolve this? It appears that Outlook is finding an internal certificate.
security_alert.jpg
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Question by:Yort
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Expert Comment

by:No More
ID: 41874946
If it have been moved to cloud you must re-create outlook profile to user@company.com and let it connect to office 365


or

View certificate and download / install and add it to trusted certificates
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Author Comment

by:Yort
ID: 41874949
@David_FIala - I did do that. As a matter fact, the Office 365 domain name it's a completely different than what used internally. But somehow this certificate issue keeps coming up.
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Expert Comment

by:No More
ID: 41874953
Does user have UPN prefix of new domain ?

go to control panel - Mail and check how many profiles you have there and what's the default one


I wonder if the old DNS records on Hosting still include pointer to Exchange server
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No More earned 2000 total points
ID: 41874960
Have a look on your internal CA to see what certs are issued
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Author Closing Comment

by:Yort
ID: 41874976
That was the issue. I removed the offending certificate via IIS 7 and the problem is no more! Thanks!
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