You should append the PositiveSSL CA 2 intermediate certificate to your certificate file. That comodo cert isn't in a few browsers'/systems' certificate stores

You should append the PositiveSSL CA 2 intermediate certificate to your certificate file. That comodo cert isn't in a few browsers'/systems' certificate stores yet. https://www.ssllabs.com/ssltest/analyze.html?d=receiveee.com https://www.ssllabs.com/ssltest/analyze.html?d=receiveee.com Your nginx configuration ssl ciphersuite list includes single DES, too, when it shouldn't.