Question

Security Alert Pop Up for Outlook Users - Security Certificate does not have the same name

Asked by: doulos777

We have a small Windows 2003 network with Exchange 2007 setup for about 10 users.  We have OWA setup to use SSL with a certificate with the following name:  mail.website.com

OWA works fine and there is no SSL problem there.  On the LAN however users regularly get a Pop up message with the following details


--------------------------------------------------------------------------------------------------------------
Security Alert

Exchange.domain.local

"The name on the security certificate is invalid or does not match the name of the site"

"Do you want to proceed?"

YES   NO   VIEW CERTIFICATE

--------------------------------------------------------------------------------------------------------------------

Users can click yes and proceed with no problem, but the warning continues to come up.  You can also view and install the certificate, but that does not solve the problem either.

I understand that the certificate that we have on the server is for the internet name (mail.website.com) and it will not match the local name of the server(exchange.domain.local), but why does that even matter?  Does 2007 use SSL internally?  

What can I do to get rid of the warning?

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Asked On
2008-04-16 at 06:34:43ID23327017
Tags

Microsoft

,

Exchange

,

2007

Topics

Exchange Email Server

,

Secure Socket Layer (SSL) & HTTPS

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: spyordie007Posted on 2008-04-16 at 06:48:21ID: 21367698

Outlook 2007 uses the Autodiscover web service to identify locations for the Availability Service (free/busy) and the Offline Address List and this is SSL.

You need to either replace the certificates that are presented to clients to also contain the autodiscover host (autodiscover.mymaildomain.com) or publish an SCP record in AD that points them to a differant host so the name will match your existing certificate (i.e. use mail.website.com as the name).

The ideal solution is usually to use a certificate that supports the "Subject Alternate Name" attribute, allowing you to use multiple host names with a single certificate.

More information here:
http://msexchangeteam.com/archive/2007/04/30/438249.aspx

Cheers,
Erik

 

by: asavenerPosted on 2010-11-17 at 10:07:21ID: 34157529

Sounds to me as if a service is hanging on startup.  Try following these instructions to disable services using the recovery console:

http://www.windowsnetworking.com/kbase/WindowsTips/Windows2003/AdminTips/Admin/DisablingServicesinRecoveryConsole.html

 

by: asavenerPosted on 2010-11-17 at 10:07:58ID: 34157536

D'oh!  wrong thread.

20120131-EE-VQP-002

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