夹缝中求生存-在一无所有的php虚拟主机环境下利用smtp发送邮件

Posted 2020-10-09 Scrazy

夹缝中求生存

利用php虚拟主机向指定QQ邮箱账户发送一份电子邮件，以163邮箱为例。

前言：在阿里云虚拟主机php的苛刻环境下，php函数库少的可怜，各种不支持，想要发送一份不被收件邮箱屏蔽的邮件，顿时感觉整个世界都黑暗了，不过还好，在夹缝中求生存，踩过了各种坑，最后还是有解决之道的。

• 首先得注册163个人邮箱账号，配置SMTP并设置授权密码（此部分不再赘述，如有疑问请自行百度）。
• 几点提醒：
  • 邮件发送成功却未收到邮件提醒：发送的邮件可能被放到了垃圾箱，尤其是注意账户为QQ邮箱的收件人。
  • 邮件内容不要太多，否则很有可能会被当成垃圾邮件处理（亲测发送整段html代码邮件会被QQ收件邮箱会屏蔽拒收邮件，而163收件邮箱会正常接收邮件），尤其是注意账户为QQ邮箱的收件人。
  • 以下是以163邮箱配置smpt，亲测代码可用，其他邮箱配置smpt未作尝试。
  • 已解决自定义发件人，代码中已写明。
  • 已解决当收件邮箱为QQ邮箱时，邮件会被QQ邮箱当作垃圾邮件处理的问题。
• 以下是php代码：

test.php

 1 <?php
 2 header("Content-Type: text/html; charset=utf-8");
 3 
 4 //引入发送邮件类
 5 require("smtp.php");
 6 //使用163邮箱服务器
 7 $smtpserver = "smtp.163.com";
 8 //163邮箱服务器端口
 9 $smtpserverport = 25;
10 //你的163服务器邮箱账号
11 $smtpusermail = "****@163.com";//
12 //收件人邮箱，***@163.com/***@qq.com
13 $smtpemailto = "[email protected]";
14 //发送人，可随意显示发件人
15 $sender = "邮件发送方";
16 //你的邮箱账号(去掉@163.com)
17 $smtpuser = "****";//你的163邮箱去掉后面的163.com
18 //你的邮箱密码
19 $smtppass = "*****"; //你的163邮箱SMTP的授权码，千万不要填密码！！！
20 
21 //邮件主题
22 $mailsubject = "邮件提醒";
23 //邮件内容
24 $mailbody = "
25 详细信息：</br>
26 <h1>这是一封测试邮件</h1>
27 ";
28 //邮件格式（HTML/TXT）,TXT为文本邮件
29 $mailtype = "HTML";
30 //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.
31 $smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);
32 //是否显示发送的调试信息
33 $smtp->debug = TRUE;
34 //发送邮件
35 $smtp->sendmail($smtpemailto, $smtpusermail, $sender ,$mailsubject, $mailbody, $mailtype);
36   
37 ?>

smtp.php

  1 <?php
  2 header("Content-Type: text/html; charset=utf-8");
  3   
  4 class smtp
  5 {
  6  /* Public Variables */
  7  var $smtp_port;
  8  var $time_out;
  9  var $host_name;
 10  var $log_file;
 11  var $relay_host;
 12  var $debug;
 13  var $auth;
 14  var $user;
 15  var $pass;
 16   
 17  /* Private Variables */
 18  var $sock;
 19   
 20  /* Constractor */
 21  function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
 22  {
 23   $this->debug = FALSE;
 24   $this->smtp_port = $smtp_port;
 25   $this->relay_host = $relay_host;
 26   $this->time_out = 30; //is used in fsockopen()
 27   $this->auth = $auth;//auth
 28   $this->user = $user;
 29   $this->pass = $pass;
 30   $this->host_name = "localhost"; //is used in HELO command
 31   $this->log_file = "";
 32   $this->sock = FALSE;
 33 }
 34   
 35  /* Main Function */
 36  function sendmail($to, $from, $sender, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
 37  {
 38   $mail_from = $this->get_address($this->strip_comment($from));
 39   $body = preg_replace("/(^|(\r\n))(\.)/", "\1.\3", $body);
 40   $header = "MIME-Version:1.0\r\n";
 41   if($mailtype=="HTML")
 42   {
 43    $header .= "Content-Type:text/html\r\n";
 44   }
 45   $header .= "To: ".$to."\r\n";
 46   if ($cc != "")
 47   {
 48    $header .= "Cc: ".$cc."\r\n";
 49   }
 50   $header .= "From: ".$sender."<".$from.">\r\n";
 51   $header .= "Subject: ".$subject."\r\n";
 52   $header .= $additional_headers;
 53   $header .= "Date: ".date("r")."\r\n";
 54   $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
 55   list($msec, $sec) = explode(" ", microtime());
 56   $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
 57   $TO = explode(",", $this->strip_comment($to));
 58   
 59   if ($cc != "")
 60   {
 61    $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
 62    }
 63   if ($bcc != "")
 64   {
 65    $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
 66   }
 67   $sent = TRUE;
 68   foreach ($TO as $rcpt_to)
 69   {
 70    $rcpt_to = $this->get_address($rcpt_to);
 71    if (!$this->smtp_sockopen($rcpt_to))
 72    {
 73     $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
 74     $sent = FALSE;
 75     continue;
 76    }
 77    if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body))
 78    {
 79     $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
 80    }
 81    else
 82    {
 83     $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
 84     $sent = FALSE;
 85    }
 86    fclose($this->sock);
 87    $this->log_write("Disconnected from remote host\n");
 88   }
 89   return $sent;
 90  }
 91   
 92  /* Private Functions */
 93  function smtp_send($helo, $from, $to, $header, $body = "")
 94  {
 95   if (!$this->smtp_putcmd("HELO", $helo))
 96   {
 97    return $this->smtp_error("sending HELO command");
 98   }
 99   
100   #auth
101   if($this->auth)
102   {
103    if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user)))
104    {
105     return $this->smtp_error("sending HELO command");
106    }
107    if (!$this->smtp_putcmd("", base64_encode($this->pass)))
108    {
109     return $this->smtp_error("sending HELO command");
110    }
111   }
112   if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">"))
113   {
114    return $this->smtp_error("sending MAIL FROM command");
115   }
116   if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">"))
117   {
118    return $this->smtp_error("sending RCPT TO command");
119   }
120   if (!$this->smtp_putcmd("DATA"))
121   {
122    return $this->smtp_error("sending DATA command");
123   }
124   if (!$this->smtp_message($header, $body))
125   {
126    return $this->smtp_error("sending message");
127   }
128   if (!$this->smtp_eom())
129   {
130    return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
131   }
132   if (!$this->smtp_putcmd("QUIT"))
133   {
134    return $this->smtp_error("sending QUIT command");
135   }
136   return TRUE;
137  }
138   
139  function smtp_sockopen($address)
140  {
141   if ($this->relay_host == "")
142   {
143    return $this->smtp_sockopen_mx($address);
144   }
145   else
146   {
147    return $this->smtp_sockopen_relay();
148   }
149  }
150   
151  function smtp_sockopen_relay()
152  {
153   $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
154   $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
155   if (!($this->sock && $this->smtp_ok()))
156   {
157    $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
158    $this->log_write("Error: ".$errstr." (".$errno.")\n");
159    return FALSE;
160   }
161   $this->log_write("Connected to relay host ".$this->relay_host."\n");
162   return TRUE;;
163  }
164   
165  function smtp_sockopen_mx($address)
166  {
167   $domain = preg_replace("^[email protected]([^@]+)$", "\1", $address);
168   if ([email protected]($domain, $MXHOSTS))
169   {
170    $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
171    return FALSE;
172   }
173   foreach ($MXHOSTS as $host)
174   {
175    $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
176    $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
177    if (!($this->sock && $this->smtp_ok()))
178    {
179     $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
180     $this->log_write("Error: ".$errstr." (".$errno.")\n");
181     continue;
182    }
183    $this->log_write("Connected to mx host ".$host."\n");
184    return TRUE;
185   }
186   $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
187   return FALSE;
188  }
189   
190  function smtp_message($header, $body)
191  {
192   fputs($this->sock, $header."\r\n".$body);
193   $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
194   return TRUE;
195  }
196   
197  function smtp_eom()
198  {
199   fputs($this->sock, "\r\n.\r\n");
200   $this->smtp_debug(". [EOM]\n");
201   return $this->smtp_ok();
202  }
203   
204  function smtp_ok()
205  {
206   $response = str_replace("\r\n", "", fgets($this->sock, 512));
207   $this->smtp_debug($response."\n");
208   if (!preg_match("/^[23]/", $response))
209   {
210    fputs($this->sock, "QUIT\r\n");
211    fgets($this->sock, 512);
212    $this->log_write("Error: Remote host returned \"".$response."\"\n");
213    return FALSE;
214   }
215   return TRUE;
216  }
217   
218  function smtp_putcmd($cmd, $arg = "")
219  {
220   if ($arg != "")
221   {
222    if($cmd=="")
223    {
224     $cmd = $arg;
225    }
226    else
227    {
228     $cmd = $cmd." ".$arg;
229    }
230   }
231   fputs($this->sock, $cmd."\r\n");
232   $this->smtp_debug("> ".$cmd."\n");
233   return $this->smtp_ok();
234  }
235   
236  function smtp_error($string)
237  {
238   $this->log_write("Error: Error occurred while ".$string.".\n");
239   return FALSE;
240  }
241   
242  function log_write($message)
243  {
244   $this->smtp_debug($message);
245   if ($this->log_file == "")
246   {
247    return TRUE;
248   }
249   $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
250   if ([email protected]file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a")))
251   {
252    $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
253    return FALSE;;
254   }
255   flock($fp, LOCK_EX);
256   fputs($fp, $message);
257   fclose($fp);
258   return TRUE;
259  }
260   
261  function strip_comment($address)
262  {
263   $comment = "/\([^()]*\)/";
264   while (preg_match($comment, $address))
265   {
266    $address = preg_replace($comment, "", $address);
267   }
268   return $address;
269  }
270   
271  function get_address($address)
272  {
273   $address = preg_replace("/([ \t\r\n])+/", "", $address);
274   $address = preg_replace("/^.*<(.+)>.*$/", "\1", $address);
275   return $address;
276  }
277   
278  function smtp_debug($message)
279  {
280   if ($this->debug)
281   {
282    echo $message;
283   }
284  }
285   
286 }
287 ?>