Exchange 2007 certificate error

I have a remote user who is getting this error from Outlook: -

There is a problem with the proxy servers security certificate, the name is invalid or does not match the name of the target site mail.OurDomain.com.
Outlook is unable to connect to the proxy servers (Error Code 10).

Does anyone know how to resolve this?
HKFueyAsked:
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ash007Commented:
Hi,

Please make sure we have certificate issued to mail.domain.com
SteveCommented:
connect to OWA on the address you've noted and use the browser to view the certificate.

confirm if it is correct or not and replace it if it isn't.

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HKFueyAuthor Commented:
Thanks
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