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Exchange 2007 SSL Certs mismatch

I have a  client's server running Exchange 2007 and there is a single SSL certificate for external use. Unfortunately, the server goes to this certificate when it's accessed internally by Outlook.

I get a SSL mismatch error when launching Outlook 2007 for "sites." Allowing this to happen is OK, but not ideal.

What have I misconfigured here? Should I get a wildcard domain certificate?

The external certificate is for mail.domain.com (internally the domain is domain.local).

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Mark Mahacek

8/22/2022 - Mon
James H

A UCC cert should be sufficient.
5 domain UCC cert from godady.com is $89.
This will allow you to add the local and .com domains and resolve this issue.
Mark Mahacek

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