Phpmailer没有回应

Question

我正在使用PHPMailer类发送带附件的电子邮件。邮件 发送成功但$ mail-＆gt; Send（）方法在我没有返回时 连接到移动分组数据。即我没有得到成功或失败的消息。有趣的是，当我连接到Wifi DSL线路时，代码工作正常。我的剧本是......

require ("PHPMailerAutoload.php");
$mail = new PHPMailer();  
$mail->IsSMTP(); 
$mail->SMTPAuth = true;  
$mail->SMTPSecure = 'TLS'; 

$mail->Host = "smtp.office365.com";  
$mail->Port = 587; 
$mail->IsHTML(true);

$mail->Username ="xxx"; 
$mail->Password = "xxx"; 

$mail->SetFrom("from@mydomin.com","my name");
$mail->Subject = "My Subject";
$mail->Body = "Hi";
$mail->AddAddress("tomail@otherdomain.com");
$mail->AddBCC("tomail@otherdomain.com");

$file1 = "path/to/file1.pdf";
$file1 = "path/to/file2.pdf";
$file1 = "path/to/file3.pdf";

$mail->AddAttachment($file1);
$mail->AddAttachment($file2);
$mail->AddAttachment( $file2);

if(!$mail->Send())
{

    echo "succeed";
}
else
{
    echo "failed";
}