The .pem cert bundle must be built in a specific order to be properly read by haproxy. After obtaining a new cert package from Comodo, the file names will have STAR_ prefixes. First remove those.
Next, combine the following files into a new one called main_ringfree_biz.pem:
# cd /etc/ringfree/certs/ # cat ringfree_biz.key > main_ringfree_biz.pem # cat ringfree_biz.crt >> main_ringfree_biz.pem # cat ringfree_biz_bundle.pem >> main_ringfree_biz.pem
Afterwards, restart the haproxy service:
# service haproxy reload