Note on installing Comodo Positive SSL on Nginx

Usualy, Comodo sends you an archive containing two files: example.crt and example.ca-bundle. In order to install your certificate on Nginx, you need to concatenate these two files at first:

cat example.crt example.ca-bundle >> example.ssl-bundle.crt

Now, in Nginx config, link ssl_certificate property to resulting example.ssl-bundle.crt