PHP一个发送邮件的类

sp;  }


        if (!$this->smtp_message($header, $body)) {


            return $this->smtp_error("sending message");


        }


        if (!$this->smtp_eom()) {


            return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");


        }


        if (!$this->smtp_putcmd("QUIT")) {


            return $this->smtp_error("sending QUIT command");


        }


        return TRUE;


    }


    function smtp_sockopen($address)


    {


        if ($this->relay_host == "") {


            return $this->smtp_sockopen_mx($address);


        } else {


            return $this->smtp_sockopen_relay();


        }


    }


    function smtp_sockopen_relay()


    {


        $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");


        $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);


        if (!($this->sock && $this->smtp_ok())) {


            $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");


            $this->log_write("Error: ".$errstr." (".$errno.")\n");


            return FALSE;


        }


        $this->log_write("Connected to relay host ".$this->relay_host."\n");


        return TRUE;


    }


     


    function smtp_sockopen_mx($address)


    {


        $domain = ereg_replace("^.+@([^@]+)contentquot;, "\1", $address);


        if (!@getmxrr($domain, $MXHOSTS)) {


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