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 2020-10-10 Scrazy

夹缝中求生存

前言：在上一篇随笔中，以163个人邮箱作为发送邮箱地址，当收件邮箱为QQ邮箱时，极有可能会被直接扔进邮件垃圾箱里，为了解决这个问题，申请注册企业邮箱，可以减少发出的邮件被当作垃圾邮件的可能性。本文以腾讯企业邮箱为例。

• 既然是企业邮箱，首先前提是你得有一个自己的域名。然后就可以去申请免费的腾讯企业邮箱账户，传送门。
  
• 按照免费腾讯企业邮箱的申请要求，验证域名所有权后在域名提供商处设置好MX解析。下图是我在阿里云的域名设置。
• 设置好网站邮箱管理员后，可添加一个成员账户，比如命名为[e-mail](xxx.com是你的域名)，该邮箱地址将作为对外发邮件的账户。
• 记得要确保设置好开启该邮箱的账户smtp服务，邮箱->客户端设置里设置。
• 下面就可以愉快的玩耍了。

mail.php

 1 <?php
 2 function send_mail($name, $to, $subject = \'No subject\', $body) {
 3     $loc_host = "ooo";                 //主机名，随意
 4     $smtp_acc = "[e-mail]";        //你的邮箱
 5     $smtp_pass="XXXXX";              //邮箱登陆密码，不是授权码，163个人邮箱才是授权码。
 6     $smtp_host="smtp.exmail.qq.com";    //腾讯企业邮箱地址
 7     $from="[e-mail]";              //你的邮箱
 8     $headers = "Content-Type: text/html; charset=\\"utf-8\\"\\r\\nContent-Transfer-Encoding: base64";
 9     $lb="\\r\\n";                         //linebreak
10     $hdr = explode($lb,$headers);     
11     if($body) {
12         $bdy = preg_replace("/^\\./","..",explode($lb,$body));
13     }
14 
15     $smtp = array(
16 
17         array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),
18 
19         array("AUTH LOGIN".$lb,"334","AUTH error:"),
20 
21         array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "),
22 
23         array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : ")
24     );
25 
26     $smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");
27 
28     $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");
29 
30     $smtp[] = array("DATA".$lb,"354","DATA error: ");
31 
32     $smtp[] = array("From: ".$name."<".$from.">".$lb,"","");
33 
34     $smtp[] = array("To: ".$to.$lb,"","");
35 
36     $smtp[] = array("Subject: ".$subject.$lb,"","");
37 
38     foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");}
39 
40     $smtp[] = array($lb,"","");
41 
42     if($bdy) {foreach($bdy as $b) {$smtp[] = array(base64_encode($b.$lb).$lb,"","");}}
43 
44     $smtp[] = array(".".$lb,"250","DATA(end)error: ");
45 
46     $smtp[] = array("QUIT".$lb,"221","QUIT error: ");
47 
48 
49     $fp = @fsockopen($smtp_host, 25);
50     if (!$fp) echo "Error: Cannot conect to ".$smtp_host."";
51     while($result = @fgets($fp, 1024)){
52         if(substr($result,3,1) == " ") { break; }
53     }
54 
55     $result_str="";
56 
57     foreach($smtp as $req){
58 
59         @fputs($fp, $req[0]);
60 
61         if($req[1]){
62 
63             while($result = @fgets($fp, 1024)){
64                 if(substr($result,3,1) == " ") { break; }
65             };
66             if (!strstr($req[1],substr($result,0,3))){
67                 $result_str.=$req[2].$result."";
68             }
69         }
70     }
71 
72     @fclose($fp);
73     return 1;
74 }
75 
76 
77 ?>

send.php

1 <?php
2 header("Content-Type: text/html; charset=utf-8");
3 include_once("mail.php");
4 send_mail("发件人", "收件邮箱","邮件标题"],"内容");
5 echo "<h1>邮件已发送</h1>";
6 ?>