[Users] certificate recommendations

Can I have some recommendations about what company and what package to go with for a certificate to work with openser? I have a cert from godaddy, and it seems that it won't work with openser because of the intermediate certificate that they require you to use. Godaddy issues a certificate, a private key and an intermediate certificate (the intermediate certificate So openser loads just fine if I set: tls_certifcate=cert.pem tls_preivate_key=cert.key but the phone still fails to validate the certificate, because there is no place to specify the intermediate certificate. The intermediate certificate is the one that corresponds to the apache2 ssl directive SSLCertificateChainFile. The phone says: Registration Error: 503 - Certificate Validation Failure and the openser logs say: 7(7201) tls_accept: Error in SSL: 7(7201) tls_error: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca Thanks, Mark Price