I have downloaded both microsoft windoes small business server 2008 security certificate & the Nokia Entrust.cer but the phone still doesn't trust them? any ideas
If you see an error such as SSL Certificate is not trusted this means that the certificate is missing on the device or has expired. You will need to install the certificate in either of the two ways described below. There are two methods to install the certificate.
Note: To IT Admins, if you wish to stage this Entrust certificate (or any other certificate file) on your own file delivery server then you will need to place the certificate file (i.e. filename.cer) on a remote server accessible to your employees. Ensure your web delivery servers are configured to deliver the *.cer files with the mime-type: "application/x=x509-ca-cert".
Note! Self-signed certificate is not supported.
When I go to the link