大多数时候这个问题是由于头，邮件可能会发送，但SMTP服务器可能永远不会由于错误的标题，所以提供它

Most of the time this problem is due to headers, the mail might get send but the SMTP server might never deliver it at all because of faulty headers

我建议您使用PHP的邮件类，例如 phpMailer ，它处理所有的问题与标题，并有一个非常好的界面使用

I'd suggest you to use a mailing class for PHP such as phpMailer which handles all of your problems with headers and has a really nice interface to use

欢呼