phpmail+emailcar发邮件

Question

$smtp[2]['host'] = "smtp.emailcar.net";//host
$smtp[2]['port'] = "25";            //port
$smtp[2]['user'] = "username";  //user
$smtp[2]['pass'] = "password";           //password
$smtp[2]['smtp_mail'] = "@qq.com";  //mail


//163.com
$smtp[3]['host'] = "smtp.163.com";//host
$smtp[3]['port'] = "25";            //port
$smtp[3]['user'] = "username";  //user
$smtp[3]['pass'] = "password";           //password
$smtp[3]['smtp_mail'] = "[e-mail]";  //mail

使用的是phpmail，在本地服务器两个邮箱都可以发送成功，而在远程服务器第一个用了emailcar的邮箱发送失败，普通163邮箱发送成功，有可能是什么原因？发送失败提示     Disconnected from remote host

Answer 1

配置问题，emailcar不可加密。。。
gmail,163邮箱 $mail->SMTPSecure = "tls";
emailcar $mail->SMTPSecure = "";