小编And*_*ass的帖子

我正在尝试进行电子邮件验证，但似乎无法进行。目前它会建立与域的连接，但之后似乎超时。有人知道为什么吗？它似乎挂在这里：

$res=fgets($connection, "EHLO $mydomain\n");

有人能告诉我这是为什么吗？我的代码如下：

if(isset($_POST['email']) && filter_var($_POST['email'], FILTER_VALIDATE_EMAIL))

{

 // Could get this from the php ini? 
  $from="xxxx@xxxx-int.net";
 $to=$_POST['email'];
 $subject="Test";
 $message="Testing";
 list($me,$mydomain) = split("@",$from); 

 // Now look up the mail exchangers for the recipient 
 list($user,$domain) = split("@",$to,2); 
 if(getmxrr($domain,$mx,$weight) == 0)  return FALSE; 

 // Try them in order of lowest weight first 
 array_multisort($mx,$weight); 
 $success=0; 

 foreach($mx as $host) { 
  // Open an SMTP connection 
  $connection = fsockopen ($host, 25, $errno, $errstr, 1); 
  if (!$connection) 
    continue; 
  $res=fgets($connection); 
echo $res;
  if(substr($res,0,3) != "220") …