如何使用PHP对SMTP服务器执行ping命令并检查MX记录?
问题描述：
如何使用PHP对SMTP服务器执行ping命令并检查MX记录?我愿意编写一个脚本，例如可以在 http://bit.ly/z4RE上找到的脚本>
How to, using PHP, ping an SMTP server and check MX records? I'm willing to write a script such as the one that can be found on http://bit.ly/z4RE
我已经将aaa@mailinator.com用作测试邮件，这是更易读的格式的结果:
I've used aaa@mailinator.com as the test mail and this is the result in more human-readable format:
Result: Ok
Log:
MX record about mailinator.com exists.
Connection succeeded to mailinator.com SMTP.
220 mail.sogetthis.com ESMTP Postfix
> HELO verify-email.org
250 Hello
> MAIL FROM: <check@verify-email.org>
=250 OK
> RCPT TO: <aaa@mailinator.com>
=250 OK
我知道必须在服务器上打开端口25.
I know that port 25 must be open on the server.
答
要获取与给定Internet主机名相对应的MX记录，可以使用
To get MX records corresponding to a given Internet host name you can use getmxrr:
bool getmxrr ( string $hostname , array &$mxhosts [, array &$weight ] )
要通过SMTP与邮件服务器通信，可以使用 PEAR的Net_SMTP软件包. >
To communicate with the mail server via SMTP, you can use PEAR'S Net_SMTP package.
mixed Net_SMTP::vrfy ( string $string )
该软件包还具有 HELO，MAIL FROM和RCPT TO方法