티스토리 뷰
/opt/gitlab/embedded/bin/openssl s_client -connect smtp.gmail.com:465 -tlsextdebug < /dev/null | grep TLS
/opt/gitlab/embedded/bin/openssl s_client -connect smtp.gmail.com:465 -tlsextdebug < /dev/null | grep TLS
/opt/gitlab/embedded/bin/openssl s_client -connect smtp.gmail.com:465 -tlsextdebug < /dev/null | grep TLS
/opt/gitlab/embedded/bin/openssl s_client -connect smtp.gmail.com:465 -tlsextdebug < /dev/null | grep TLS