连接到outlook.com邮件服务器与PHP cURL

Question

我正试图从使用php和curl的实时邮件服务器获得完整的答案。我尝试连接pop3协议，但它不工作。

代码清单1:

<?php 
    // create curl resource 
    $curl = curl_init(); 
    
    if($curl) {
        /* Set username and password */ 
        curl_setopt($curl, CURLOPT_USERNAME, "[e-mail]");
        curl_setopt($curl, CURLOPT_PASSWORD, "password");
        
        curl_setopt($curl, CURLOPT_URL, "pop3://pop3.live.com");
        curl_setopt($curl, CURLOPT_PORT, 995);
        
        curl_setopt($curl, CURLOPT_USE_SSL,CURLUSESSL_ALL);
        
        curl_setopt($curl, CURLOPT_CAINFO, "./certificate.pem");
        
        curl_setopt($curl, CURLOPT_VERBOSE, true);
        
        //return the transfer as a string 
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
        // $output contains the output string 
        $output = curl_exec($curl);
    }
    
    echo $output;
    curl_close($curl); 
?>

当我使用这个代码时(使用pop3协议)。标准输出告诉我客户端在端口995上成功连接。但是无法读取响应。

响应读取失败

关闭连接0

但是当我使用https协议而不是pop3(在相同的代码上)我得到部分响应。它看起来像整个响应头，至少它看起来是这样的，因为它在最后一个文本之后输出了两行新内容。

接受:*/*

Answer 1

cURL对SSL上的安全POP有不同的协议标识符。

不是pop3://，而是pop3s://，你应该得到一个答案。

* Rebuilt URL to: pop3s://pop3.live.com/
* Hostname was NOT found in DNS cache
*   Trying 134.170.170.231...
* Connected to pop3.live.com (134.170.170.231) port 995 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSL connection using ECDHE-RSA-AES256-SHA
* Server certificate:
*    subject: C=US; ST=Washington; L=Redmond; O=Microsoft Corporation; CN=*.hotmail.com
*    start date: 2015-12-15 22:26:11 GMT
*    expire date: 2016-12-15 22:26:11 GMT
*    subjectAltName: pop3.live.com matched
*    issuer: C=BE; O=GlobalSign nv-sa; CN=GlobalSign Organization Validation CA - SHA256 - G2
*    SSL certificate verify ok.
< +OK DUB006-POP162 POP3 server ready
> CAPA
< -ERR unrecognized command
> USER me@xxx
< +OK password required
> PASS pass
< +OK Logged in.
> LIST
< +OK 5226 messages:
string(59927) "1 1830
2 69432
3 2751
4 2726
5 18506
6 2868
7 4636
8 1955
9 2242
10 3697