require("PHPmailer.inc.PHP");

class sendmail
{
public static function sendAccountActivateMail($to,$subject,&message)
{
    $flg = false;
    try
{
$mail= new PHPMailer(); 
$mail->IsSMTP(); 
$mail->SMTPAuth= true; 
$mail->SMTPSecure= "tls"; 
$mail->Host= "smtp.gmail.com"; 
$mail->Port= 587; 
$mail->Username= "xxx@mydomain.com"; 
$mail->Password= "xxxxxx"; 
$mail->AddReplyTo("info@mydomain.com"); 
$mail->From= "info@mydomain.com"; 
$mail->FromName= "Website"; 
$mail->Subject= $subject; 
$mail->WordWrap= 50; 
$mail->Body = $message; 
$mail->AddAddress($to); 
$mail->Send(); 
}
catch(Exception $e)
    {
        $flg = false;
    }
    return $flg;
}
}

尝试通过PHPmailer发送邮件与smtp.
打开调试给我错误：

SMTP – >错误：服务器不接受RCPT：550端口587 SMTP上提交邮件需要SMTP AUTH – >错误：服务器不接受DATA命令：SMTP – >注意：检查是否已连接时捕获了EOF