php中利用curl smtp发送邮件实例

作者：袖梨 2022-06-24

$ telnet 邮箱SMTP服务地址 25
Trying 邮箱服务IP地址...
Connected to 邮箱SMTP服务地址.
Escape character is '^]'.
exchange邮箱服务器地址 Microsoft ESMTP MAIL Service ready at Sat, 2 Jun 2012 15:02:12 +0800
EHLO 127.0.0.1
-exchange邮箱服务器地址 Hello [邮箱服务IP地址]
-SIZE
-PIPELINING
-DSN
-ENHANCEDSTATUSCODES
-X-ANONYMOUSTLS
-AUTH NTLM LOGIN
-X-EXPS GSSAPI NTLM
-8BITMIME
-BINARYMIME
-CHUNKING
-XEXCH50
XRDST
AUTH LOGIN
VXNlcm5hbWU6
用户名(base64_encode)
UGFzc3dvcmQ6
密码(base64_encode)
2.7.0 Authentication successful
MAIL FROM:发件箱地址
2.1.0 Sender OK
RCPT TO:收件箱地址
2.1.5 Recipient OK
DATA
Start mail input; end with .
要发送的内容(这里的相关的规范有很多)
.
2.6.0 <0b476f30-3b96-4e3d-84d2-395a96d34000@exchange邮箱服务器地址> Queued mail for delivery
QUIT
2.0.0 Service closing transmission channel
Connection closed by foreign host.

php测试代码:

代码如下

复制代码

header("content-type:text/html;charset=utf-8");
$smtp = array(
     "url"      => "邮箱SMTP服务器地址",
     "port"     => "邮箱SMTP服务器端口", // 一般为25
     "username" => "用户名",
     "password" => "密码",
     "from"     => "发件地址",
     "to"       => "收件地址",
     "subject" => "测试一下标题",
     "body"     => "测试一下内容"
);

$CRLF = "rn";
$test = "";
$curl = curl_init();

curl_setopt($curl, CURLOPT_URL, $smtp['url']);
curl_setopt($curl, CURLOPT_PORT, $smtp['port']);
curl_setopt($curl, CURLOPT_TIMEOUT,10);

function inlineCode($str){
         $str = trim($str);
         return $str?'=?UTF-8?B?'.base64_encode($str).'?= ':'';
}

function buildHeader($headers){
     $ret = '';
     foreach($headers as $k=>$v){
         $ret.=$k.': '.$v."n";
     }
     return $ret;
}

//
$header = array(
     'Return-path'=>'<'.$smtp['from'].'>',
     'Date'=>date('r'),
     'From'=> '<'.$smtp['from'].'>',
     'MIME-Version'=>'1.0',
     'Subject'=>inlineCode($smtp['subject']),
     'To'=>$smtp['to'],
     'Content-Type'=>'text/html; charset=UTF-8; format=flowed',
     'Content-Transfer-Encoding'=>'base64'
);
$data = buildHeader($header).$CRLF.chunk_split(base64_encode($smtp['body']));

$content = "EHLO ".$smtp["url"].$CRLF; // 先得hello一下
$content .= "AUTH LOGIN".$CRLF.base64_encode($smtp["username"]).$CRLF.base64_encode($smtp["password"]).$CRLF; // 验证登陆
$content .= "MAIL FROM:".$smtp["from"].$CRLF; // 发件地址
$content .= "RCPT TO:".$smtp["to"].$CRLF; // 收件地址
$content .= "DATA".$CRLF.$data.$CRLF.".".$CRLF; // 发送内容
$content .= "QUIT".$CRLF; // 退出

curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);    // curl接收返回数据
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $content);
$test = curl_exec($curl);
var_dump($test);
echo "
rn";
var_dump($content);

// 结束
curl_close($curl);

包测试+修改花了近6个小时让产品的代码兼容了fsockopen和curl

以后有空写个兼容fsockopen和curl简单发送邮件的smtp类