to add intermediate CA cert to your ssl cert, you need to add it in the following order:
- site.com.crt
- intermediate.crt (one or more, the order of these doesn't matter)
- ROOT.crt
the result file should look something like this:
-----BEGIN CERTIFICATE-----
site cert
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
intermediate cert
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
root cert
-----END CERTIFICATE-----
You can test your site's cert using the tool on this page:
https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO9555
