Thread:Project:Support desk/PHP mail()

Hello, when I established my wiki, I met a problem that when I creat a new user and input my email account, it will shows that: 邮件发送器的返回信息：在 PHP 的 mail 函数中的未知错误 which means that there are some unknown errors in PHP mail function. Did you meet the same problem? Please give me some help! Thanks a lot.