Outlook security alert pop up

At the time Outlook links to the Client Access Server it established whether it is an in-house or an outside link. You can see on the attached image?

X2007srv.labs.local
Information you exchange with this site cannot be viewed or changed by other. However, there is a problem with the site's security certificate.
The security certificate is from a trusted certifying authority.
The security certificate date is valid.
The name on the security certificate is invalid or does not match the name of the site.
Do you want to proceed?
Yes No View Certificate
