Question

我想知道如何查询Spamhaus的IP地址（Spamhaus zen http://www.spamhaus.org/zen/）以及传入电子邮件中找到的域（DBL http://www.spamhaus.org/dbl/），以确定给定邮件是否为垃圾邮件。

Answer 1

您可以通过host或dig与DBL连接，因为它作为DNS服务运行。常见问题解答的此页面显示了示例查询：http://www.spamhaus.org/faq/section/Spamhaus%20DBL#277

$ host example.com.dbl.spamhaus.org
Host example.com.dbl.spamhaus.org not found: 3(NXDOMAIN)

$ host dbltest.com.dbl.spamhaus.org
dbltest.com.dbl.spamhaus.org has address 127.0.1.2

IP地址查找类似地完成，IP地址中的数字以相反的顺序（1.2.3.4变为4.3.2.1.zen.spamhaus.org）。这在DNSBL的常见问题解答（http://www.spamhaus.org/faq/section/DNSBL%20Usage#252）的底部有记录。

$ host 130.119.180.199.zen.spamhaus.org
130.119.180.199.zen.spamhaus.org has address 127.0.0.2
130.119.180.199.zen.spamhaus.org has address 127.0.0.11

列出的域名或地址会产生127.0.0。*表格的结果，而干净的域名/地址会返回“未找到”状态。

Answer 2

This C++ code works safe and fast:

char *server = "some.spammer.org"; // or Ip address
BYTE ResType = 0;
HOSTENT *pHost = gethostbyname(server);
if (pHost)
{
    char query[80];
    BYTE *ip = (BYTE *)pHost->h_addr;
    sprintf(query, "%u.%u.%u.%u.zen.spamhaus.org", ip[3], ip[2], ip[1], p[0]);
    pHost = gethostbyname(query);
    if (pHost)
    {
        ResType = pHost->h_addr[3];
    }
}

Spamhaus的文档在哪里？

2 个答案: