X.509 SSL certificates can be obtained from one of the accepted Certificate Authorities. Please make sure that the certificate you obtain is NOT an individual/personal certificate. The accepted Certificate Authorities are
Verisign
Thawte
Geotrust
Comodo
Entrust
Starfield - Details for Starfield follow -

Intermediate Certificate Details: Issuer: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2
Certification Authority
Validity
Not Before: Nov 16 01:15:40 2006 GMT
Not After : Nov 16 01:15:40 2026 GMT
Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., OU=http://certificates.starfieldtech.com/repo sitory, CN=Starfield Secure Certification Authority/serialNumber=10688435

Root Certificate Details:
Issuer: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2
Certification Authority
Validity
Not Before: Jun 29 17:39:16 2004 GMT
Not After : Jun 29 17:39:16 2034 GMT
Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority

If you would like to use a Certificate Authority that is not on this list, please contact Tech Support.