Unrecognized certificate when Outlook 2010 tries to connect to Exchange 2007 on SBS 2008

Hi all,
I believe this is a security issue rather than a connectivity or configuration problem.
Running Outlook 2010 on Windows 7 trying to connect to Exchange 2007 on SBS 2008, I receive the following error:
"The name of the security certificate is invalid or does not match the name of the site"
When I view the certificate I see that it was issued to "zx-server" by "zx". This is NOT my domain CA nor is it a certificate I recognize. I use a self-issued certificate (i.e. issued by the SBS box). I also receive this certificate error when I browse to
the internal website (companyweb). No other computers on the network are seeing this behaviour.
I have checked the certificate stores in certmgr and I can't find any such certificate or CA. I have also searched the entire hard drive with no luck. I have run Kaspersky AV, Malwarebytes and MS Security Essentials several times but I can't find any malware.
I also recently installed Comodo Firewall (the problem began after this).
I need to find and remove the certificate and prevent it from being presented to me every time I try to connect to the server. All help, advice and suggestions appreciated.
Aide

Hi,
It’s really a common issue.
This issue occurs if the following conditions are true:
You replace the default self-signed Exchange Server 2007 or Exchange Server 2010 certificate with a different certificate.
Note The Setup program in Exchange Server 2007 or in Exchange Server 2010 creates a default self-signed certificate when Exchange Server 2007 or Exchange Server 2010 is installed.
The common name on the replacement certificate does not match the fully qualified domain name (FQDN) of the URL that is stored in the following objects:
o
The Service Connection Point object for the Autodiscover service
o
The
InternalUrl attribute of Exchange 2007 Web Service (EWS)
o
The
InternalUrl attribute of the Offline Address Book Web service
o
The
InternalUrl attribute of the Exchange unified messaging (UM) Web service
By default, the URL that is stored in these objects references the NetBIOS name of the server. For example, a URL that resembles the
following URL is stored:
https://NetBIOS_name.contoso.com/autodiscover/autodiscover.xml
This may differ from the host name that is used in the FQDN of the replacement certificate. For example, the replacement certificate
may have an FQDN that resembles the following FQDN:
mail.contoso.com
This issue causes a name mismatch error to occur. Therefore, you receive the security warning message when you try to connect Outlook
2007 to the mailbox.
For more detailed information about the procedures to fix the issue, please refer to the following KB article:
Title: Security warning when you start Outlook 2007 and then connect to a mailbox
that is hosted on a server that is running Exchange Server 2007 or Exchange Server 2010: "The name of the security certificate is invalid or does not match the name of the site"
URL:
http://support.microsoft.com/kb/940726
Regards,
James
James Xiong
TechNet Community Support

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ExRCA successfully obtained the remote SSL certificate.
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Remote Certificate Subject: CN=owa.optima-ws.co.uk, OU=Domain Control Validated - GeoTrust(R) SSL Trial, OU=www.geotrust.com/resources/cps, OU=GT52908676, SERIALNUMBER=OyRDVCpo58GRaYQL5CORIFnTYn4Odw9G, Issuer: CN=GeoTrust DV SSL CA, OU=Domain Validated
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It's recommended to download and install
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Hi,
As said by Sneff , I would also recommend to enable Logging to get more detailed information. Also follow
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http://blogs.technet.com/b/sbs/archive/2011/08/31/how-to-configure-outlook-for-pop3-imap-and-smtp-connectivity-in-sbs-2008-2011-standard.aspx
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Binu Kumar - MCP, MCITP, MCTS , MBA - IT , Director Aarbin Technology Pvt Ltd - Please remember to mark the replies as answers if they help and unmark them if they provide no help.

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Hello,
I have an Exchange 2010 question which I will post in the Exchange 2013 section since the Ask a question button in the legacy Exchange Servers section of technet takes me back to the part of Technet where I can only ask questions regarding Exchange 2013.
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Thank you for your reply.
The client computers that are experiencing the issues are not domain joined, the only reason I can think of why this is occurring is because the DNS servers are able to resolve the internal hostname of the server, but I would expect Outlook to always use
the proxy server that has been set in the configuration of the Outlook profile. Or at least acknowledging the answer that the initially tried route is inaccessible and immediately continue to the proxy server.
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Outlook disonnected / trying to connect/ server lost connection

Dear friends,
On my exchange 2010 i am now getting this error frequently on most of the client computers where outlook looses the connection and hosws outlook is trying to connect and in few cases it shows disconnected and then i have to close the browser and start the
app again.. this is becoming big issue now .. Can some one please advise why this is happening and how can i resolve the same.
MARK AS USEFUL/ANSWER IF IT DID
Thanks
Happiness Always
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Hi,
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http://support.microsoft.com/kb/2006508
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TechNet Community Support

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Unrecognized certificate when Outlook 2010 tries to connect to Exchange 2007 on SBS 2008

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