请教用mail()发送邮件的问题。谢谢！

$mess = '<html><head>
<title>test</title>
</head>
<body><p align="center">　</p>
<p align="center">　</p>
<p align="center"><b><font color="#CC3300" face="黑体" size="7">Hello!</font></b></p></body></html>'; mail("[email protected]","testmail",$mess,"[email protected]");