Nokia 6225 / PM6225

When I try to log on to my mobile webmail site that needs a security cert "https://", I get a "Security error: Untrusted server certificate". I notice that the phone certificate on Vision web help is a 'Verisign Class 3 public primary CA', but I think I need it to be a "Verisign Class 3 secure server CA'. Other mobile web phone users are able to log in with a similar phone with WAP 2.0. Is this a phone issue or a Vision certificate issue. Any help.

Otherwise, this 6225 is an awesome phone and I don't want to change it just to access my secure webmail.

I have mobile browser:
6.2.2.1.c.1.102 (Nokia-RH-27/V H125V1003.nep.0)