无法连接到ssl：//smtp.gmail.com：465名称或服务未知（0）

Question

I have some strange problem here, socket connection to smtp.gmail.com fails when I try to execute script on site with Warning: stream_socket_client(): unable to connect to ssl://smtp.gmail.com:465 (php_network_getaddresses: getaddrinfo failed: Name or service not known) in /var/www/test/test.php on line 2 php_network_getaddresses: getaddrinfo failed: Name or service not known (0) , but work fine if i run it in shell like php test.php, telnet works fine too and openssl connection as well, but web script just fail. I looked a lot of similar issues and didn't found an answer for that, any suggestions? I run nginx + php-fpm if, openssl enabled

UPD: here is my test script:

$fp = fsockopen("ssl://smtp.gmail.com", 465, $errno, $errstr, 10);
if (!$fp) {
    echo "$errstr ($errno)<br />
";
} else {
    echo "opened";
}