求助！邮件发送问题，各位给出个主意！

Question

在网上找了下用php发送邮件的代码，发现都需要身份验证即需要发送者的邮箱密码。我现在做的一个小项目是用户向好友推荐网站，填上用户自己的邮箱和朋友的邮箱就可以发送邮件。例子请参考www.coupons.com 
问题就在于不能够让用户输入密码，这种情况不知道各位高手怎么解决呀，请不吝赐教。

Answer 1

那就采用直发，不过会被当成垃圾邮件，需要单独和大的email提交申请，另外需要修改域名解析，添加mx记录和txt记录

Answer 2

需要发送者的邮箱密码这是由邮件服务器决定的，你把密码写在PHP里面别人又看不到的，而且可以弄个专门用来发送的邮箱账号

Answer 3

额，您可以参考一下www.coupons.com上的例子，看看是怎么实现的。

Answer 4

用phpmailer，申请个foxmail的帐户就能发了，也可以随意定义邮件中显示的发送人及回复邮件。

Answer 5

<?phpclass smtp
{
/* Public Variables */
    var $smtp_port;
    var $time_out;
    var $host_name;
    var $log_file;
    var $relay_host;
    var $debug;
    var $auth;
    var $user;
    var $pass;/* Private Variables */
    var $sock;/* Constractor */
    function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
    {
        $this->debug = FALSE;
        $this->smtp_port = $smtp_port;
        $this->relay_host = $relay_host;
        $this->time_out = 30; //is used in fsockopen()
        #
        $this->auth = $auth;//auth
        $this->user = $user;
        $this->pass = $pass;
        #
        $this->host_name = "localhost"; //is used in HELO command
        $this->log_file = "";        $this->sock = FALSE;
    }/* Main Function */
    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
    {
        $mail_from = $this->get_address($this->strip_comment($from));
        $body = ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
        $header .= "MIME-Version:1.0\r\n";
        $header .= "Content-Type:text/plain;Charset=utf-8\r\n";
        $header .= "To: ".$to."\r\n";
        if ($cc != "") {
            $header .= "Cc: ".$cc."\r\n";
        }
        $header .= "From: $from<".$from.">\r\n";
        $header .= "Subject: =?UTF-8?B?".base64_encode($subject)."?=\r\n";
        $header .= $additional_headers;
        $header .= "Date: ".date("r")."\r\n";
        $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
        list($msec, $sec) = explode(" ", microtime());
        $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
        $TO = explode(",", $this->strip_comment($to));        if ($cc != "") {
            $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
        }        if ($bcc != "") {
            $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
        }        $sent = TRUE;
        foreach ($TO as $rcpt_to) {
            $rcpt_to = $this->get_address($rcpt_to);
            if (!$this->smtp_sockopen($rcpt_to)) {
                $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
                $sent = FALSE;
                continue;
            }
            if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
                $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
            } else {
                $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
                $sent = FALSE;
            }
            fclose($this->sock);
            $this->log_write("Disconnected from remote host\n");
        }
        return $sent;
    }/* Private Functions */    function smtp_send($helo, $from, $to, $header, $body = "")
    {
        if (!$this->smtp_putcmd("HELO", $helo)) {
            return $this->smtp_error("sending HELO command");
        }
        #auth
        if($this->auth){
            if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
                return $this->smtp_error("sending HELO command");
            }            if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
                return $this->smtp_error("sending HELO command");
            }
        }
        #
        if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {
            return $this->smtp_error("sending MAIL FROM command");
        }        if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {
            return $this->smtp_error("sending RCPT TO command");
        }        if (!$this->smtp_putcmd("DATA")) {
            return $this->smtp_error("sending DATA command");
        }        if (!$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)
    {
        $domain = ereg_replace("^.+@([^@]+)$", "\\1", $address);
        if (!@getmxrr($domain, $MXHOSTS)) {
            $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
            return FALSE;
        }
        foreach ($MXHOSTS as $host) {
            $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
            $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
            if (!($this->sock && $this->smtp_ok())) {
                $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
                $this->log_write("Error: ".$errstr." (".$errno.")\n");
                continue;
            }
            $this->log_write("Connected to mx host ".$host."\n");
            return TRUE;
        }
        $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
        return FALSE;
    }    function smtp_message($header, $body)
    {
        fputs($this->sock, $header."\r\n".$body);
        $this->smtp_debug(">> ".str_replace("\r\n", "\n".">; ", $header."\n>; ".$body."\n>; "));        return TRUE;
    }    function smtp_eom()
    {
        fputs($this->sock, "\r\n.\r\n");
        $this->smtp_debug(". [EOM]\n");        return $this->smtp_ok();
    }    function smtp_ok()
    {
        $response = str_replace("\r\n", "", fgets($this->sock, 512));
        $this->smtp_debug($response."\n");        if (!ereg("^[23]", $response)) {
            fputs($this->sock, "QUIT\r\n");
            fgets($this->sock, 512);
            $this->log_write("Error: Remote host returned \"".$response."\"\n");
            return FALSE;
        }
        return TRUE;
    }    function smtp_putcmd($cmd, $arg = "")
    {
        if ($arg != "") {
            if($cmd=="") $cmd = $arg;
            else $cmd = $cmd." ".$arg;
        }        fputs($this->sock, $cmd."\r\n");
//        fputs($this->sock, $cmd."\r\nHost:62.243.224.179:1080/r/n/r/n");        $this->smtp_debug(">; ".$cmd."\n");        return $this->smtp_ok();
    }    function smtp_error($string)
    {
        $this->log_write("Error: Error occurred while ".$string.".\n");
        return FALSE;
    }    function log_write($message)
    {
        $this->smtp_debug($message);        if ($this->log_file == "") {
            return TRUE;
        }        $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
        if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
            $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
            return FALSE;
        }
        flock($fp, LOCK_EX);
        fputs($fp, $message);
        fclose($fp);        return TRUE;
    }    function strip_comment($address)
    {
        $comment = "\\([^()]*\\)";
        while (ereg($comment, $address)) {
            $address = ereg_replace($comment, "", $address);
        }        return $address;
    }    function get_address($address)
    {
        $address = ereg_replace("([ \t\r\n])+", "", $address);
        $address = ereg_replace("^.*<(.+)>;.*$", "\\1", $address);        return $address;
    }    function smtp_debug($message)
    {
        if ($this->debug) {
            echo $message;
        }
    }
}##########################################
    $smtpserver = "mail.pojaa.net";//SMTP服务器
    $smtpserverport =25;//SMTP服务器端口
    $smtpusermail = "[email protected]";//SMTP服务器的用户邮箱
    $smtpemailto = "[email protected]";//发送给谁
    $smtpuser = "[email protected]";//SMTP服务器的用户帐号
    $smtppass = "SpiderCommonMail";//SMTP服务器的用户密码
    $mailsubject = "测试php使用Spider公共邮箱";//邮件主题
    $mailbody = '  测试php使用Spider公共邮箱发送邮件功能，该邮件发送曲蓓，抄送赖雅静和彭程，Please核对。';//邮件内容
    $mailtype = "TXT";//邮件格式（HTML/TXT）,TXT为文本邮件
    $cc = '[email protected],[email protected]'; //抄送
##########################################
    $smtp = new smtp($smtpserver,$smtpserverport,false,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
    $smtp->debug = TRUE;//是否显示发送的调试信息
    $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype/*,$cc*/);?>