Running Datasync 1.2.4 version 966
Nokia Lumia 900 with Windows Phone7.5 and OS version 7.10.8779.8

When trying to sync the Nokia Lumia 900, the certificate is sent from the
server but you are not able to accept and store the certificate on the
phone. I then downloaded the mobility.cer file from the Datasync server and
emailed it to the phone. When you click on the attachment the phone
responds as having installed the certificate, but the following error occurs
when trying to sync:

"There is a problem with the certificate for server.domain.com"
Error Code 80072F06

As usual, any help would be great