The client uses Outlook 2010 connecting to Exchange 2010. When outlook is opened on any PC in the domain, after a few minutes a certificate warning appears that "name on the certificate is invalid or does not match the name of the site".
The interesting part is that it is not one of our certificates. It shows as a certificate for server.domain.com.com. No there is no error in our cert. If the user clicks the NO button, Outlook continues to work fine. So it does not appear to be something happening here. I researched the IP that answers the address on the cert and found a site hosted on Amazon Tech that will respond to any domain name entered with and extra ".com" tacked onto the end. OK that's a clever way to get random hits on your web site. Register com.com and redirect any subdomains. If I open the site in a browser I get the same cert warning.
But why am I getting this from Outlook?