用SMTP传送邮件时的问题

答案：
下面是我找到的一个直接使用smtp发送邮件的php例子程序(经改编), 但是服务器方总是提示: 550 system busy! 并且邮件无法发送. 
那位知道如何处理? 

另: 对于smtp服务器需要密码的情况该如何处理验证呢? 

sory , 刚刚看到 smtp 发送邮件的问题 (链接的这个帖子怎么不是精华?, 建议斑竹给一个啊). 




问题已经解决: 
1. 命令data应该是"DATA\r\n" 
2. from和to命令应该有, 否则一些server拒发邮件 
3.使用base64_encode 加密用户名和密码 

<?php 

require("php\mail.php"); 
?> 


<? 
$smtp = "smtp.163.net"; 
$from ="hylpro@163.net"; 

$to = "hylpro@163.net"; 
$subject ="Hello php mail"; 



$message="Hello! this is a test use php"; 

$mail = new mail($smtp,"Welcom use this mail",true); 

$mail->send( $to,$from,$subject,$message); 

?> 


 
<?
//---------------
// 实现SMTP
//---------------

class Mail{
  var $lastmessage; //记录最后返回的响应信息
  var $lastact; //最后的动作，字符串形式
  var $welcome; //用在HELO后面，欢迎用户
  var $debug; //是否显示调试信息
  var $smtp; //smtp服务器
  var $port; //smtp端口号
  var $fp; //socket句柄


  //Construct
  function mail($smtp, $welcome="", $debug=false)
  {
    if(empty($smtp)) die("SMTP cannt be NULL!");

    $this->smtp=$smtp;
    if(empty($welcome))
    {
       $this->welcome=gethostbyaddr("localhost");
    }
    else
      $this->welcome=$welcome;

      $this->debug=$debug;
      $this->lastmessage="";
      $this->lastact="";
      $this->port="25";
  }

  //
  function show_debug($message, $inout)
    {
      if ($this->debug)
      {
        if($inout=="in") //响应信息
          {
             $m="<b> 收: </b>";
          }
        else
             $m="<b> 发: </b>" ;

        if(!ereg("n$", $message))
          $message .= " ";

        $message=nl2br($message);

        echo "<font color=#339933> $m </font>$message ";
      }
   }//end show debug


   function do_command($command, $code)
   {

     $this->lastact=$command."\r\n";
     $this->show_debug($this->lastact, "out");

     fputs ( $this->fp, $this->lastact );


     $this->lastmessage = fgets ( $this->fp, 512 );

     $this->show_debug($this->lastmessage, "in");

     if(!ereg("^$code", $this->lastmessage)) return false;
     else return true;


   } //end do command


   //发一个命令
   function command($command, $code)
   {
     $this->lastact=$command."\r\n";
     $this->show_debug($this->lastact, "out");

     fputs ( $this->fp, $this->lastact );

   } //end send Cmd

   //等待一个应答
   function wait($code)
   {

     $this->lastmessage = fgets ( $this->fp, 512 );
     $this->show_debug($this->lastmessage, "in");

     if(!ereg("^$code", $this->lastmessage))
     {
        return false;
     }
     else
     {
        return true;
     }

   }


   //发送邮件
   function send( $to,$from,$subject,$message)
  {
     //连接服务器
     echo "<br>";

     $this->lastact="connect";
     $this->show_debug("Connect to SMTP server : ".$this->smtp, "out");
     $this->fp = fsockopen ( $this->smtp, $this->port );

     if ( $this->fp )
     {
         // set_socket_blocking( $this->fp, true );
        // stream_set_blocking($this->fp,true);

         $this->lastmessage=fgets($this->fp,512);
         $this->show_debug($this->lastmessage, "in");
         if (! ereg ( "^220", $this->lastmessage ) )
         {
              return false;
         }
         else
         {
             if(!$this->do_command("EHLO I want mail!", "250"))
             {
                fclose($this->fp);
                return false;
             }

             
             
             //处理认证, 不知如何直接使用用户名和密码计算认证值
             if(!$this->do_command("AUTH LOGIN","334"))
             {
                fclose($this->fp);
                return false;
             }

             //User hash
             if(!$this->do_command("xxxxx","334"))
             {
               fclose($this->fp);
               return false;
             }

             //code hash
             if(!$this->do_command("xxxx","235"))
             {
               fclose($this->fp);
               return false;
             }
             

             if(!$this->do_command("MAIL FROM : <$from> " , "250"))
             {
                fclose($this->fp);
                 return false;
             }

             if(!$this->do_command("RCPT TO: <$to>", "250"))
             {
                fclose($this->fp);
                return false;
             }

             //发送正文
             if(!$this->do_command("DATA\r\n.", "354"))
             {
               fclose($this->fp);
               return false;
             }

             fputs($this->fp, "From: hylpro <$from>\r\n");
             fputs($this->fp,"To: $to <$to>\r\n");
             fputs($this->fp, "Mime-Version: 1.0\r\n");
             fputs($this->fp, "Subject: $subject\r\n");
             fputs($this->fp, "Context-Type : text/plain;\r\n");
             fputs($this->fp, "   charset = \"GB2312\" \r\n ");
             fputs($this->fp, "Content-Transfer-Encoding : quoted--printable ;\r\n");

             fputs($this->fp, "$message\r\n");
             fputs($this->fp, "       \r\n");
             fputs($this->fp, "       \r\n");
             fputs($this->fp, ".\r\n"); //end


             $this->show_debug($message, "out");
              echo "<br>";
             $this->show_debug(".\r\n", "out");   //以只含点的行结束数据传送


             $this->wait("250");   这里总是返回 system busy 

             if(!$this->do_command("QUIT", "250"))
             {
               fclose($this->fp);
               return false;
             }

             fclose($this->fp);

     }
     return true;
   } //end if($this->fp)
   else
   {
       $this->show_debug("Connect failed!", "in");
       return false;
   }
 } //end send

} //end class


?>

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