After upgrading to Exchange 2010 from 2003, Outlook clients (2003 and 2010) are getting Security Alert pop-ups.
"Information you exchange with this site cannot be viewed or changed by others. however, there is a problem with the site's security certificate"
Red X next to: "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"
No more Pop-ups (no client interaction, want a server resolution)
We do not have an external SSL cert and do not want to buy one.