关于php的mail()和winwebmail配置

fookootoo

admin域是&&&&&,登陆邮箱能正常往yahoo,163发信,但用下面这段程序测试就收不到。<br>
<? <br>
$mail = "*****@yahoo.com.cn"; <br>
$message="测试一封来服务器的邮件"; <br>
if(mail($mail, "这里一些文本内容", $message, "From: admin@&&&&&\nReply-To:*****@yahoo.com.cn\nX-Mailer: PHP/" . phpversion())) <br>
echo "邮件已发送至$mail "; <br>
else <br>
echo "失败了,郁闷呀郁闷..."; <br>
?> <br>
但页面运行结果是邮件已发送至*****·yahoo.com.cn<br>
<br>
如果$mail是*****@yahoo.com.cn则发送失败后admin邮箱里会收到超时错误：<br>
*****@yahoo.com.cn : 451 VS5-MF Excessive unknown recipients - possible Open Relay <a target=_blank href=http://help.yahoo.com/help/us/mail/spam/spam-18.html>http://help.yahoo.com/help/us/mail/spam/spam-18.html</a> (#4.4 <br>
<br>
如果$mail是*****@163.com则发送失败后admin邮箱里会收到超时错误:<br>
*****@163.com : 554 Sender is rejected 1106,mx16,1EE+AtgCskMZ_gUC.11382S2 <br>
<br>
请问高手钔这是怎么回事啊？谢谢啦！！<br>

rayer

邮件服务器要开启身份认证功能，看官方此页 <a target=_blank href=http://www.winwebmail.com/spam.html>http://www.winwebmail.com/spam.html</a>

fookootoo

哦,原来是这样,谢谢啦,那我不开smtp认证能发不?