Hi, yes, but they are next to useless.    I've uploaded the CA cert in PEM format to the MX, which shows its been issues from and to the same place. Then installed the same (in .crt form) to the client machine in the User > Personal > Certificate store.    Still getting the certificate validation error.    It will work when our wildcard cert is installed in the local machine cert store, but we dont want to have that installed on all machines where possible.    Cheers Matt  ... View more