The received certificate has expired.
ID no: 80090328
Exchange System Manager
This error occurs when the certificate linked to the Exchange 2003 default website has expired.
Simply replace the certificate linked to the default website in Internet Information Services (IIS) and this will resolve the problem.
Make sure you perform an IISRESET after making the changes documented in this blog post.
Note if you perform these steps and get the following error "The token supplied to the function is invalid", please refer to the following blog post: