我現在是以ssh登入方式，且我的意思是可不可以改程式就好…程式碼為：
<html>
<head>
<title>意見信箱</title>
</head>
<body>
<?php
$mailto="
yourname@hahaha.com.tw";
if (($topic!="") and ($Email!="") and ($body!="")) {
$tmpfilename = tempnam("/tmp", "dm");
$fp = fopen($tmpfilename, "w");
fwrite($fp, "From: ".$Email."
");
fwrite($fp, "Subject: ".$topic." <訪客來信>
");
fwrite($fp, $body."
");
fwrite($fp, "送信人:".$sender."
");
fwrite($fp, "發信IP:".$REMOTE_ADDR."
");
fclose($fp);
$execstr="cat ".$tmpfilename." | /usr/lib/sendmail ".$mailto;
exec($execstr);
$execstr="echo $sender $REMOTE_HOST >> /var/log/mail.log";
exec($execstr);
echo "信件已送出！！本站工作人員盡快處理您的問題<p><br><br><br><br><br>";
} else {
?>
<form action=<? echo($GLOBALS["PHP_SELF"]); ?> method=post>
<table border=0>
<tr><td>主題</td><td><input type=text size=20 name=topic></tr>
<tr><td>姓名</td><td><input type=text size=20 name=sender></tr>
<tr><td>Email</td><td><input type=text size=20 name=Email></tr>
<tr><td colspan=2>內容<br><textarea cols=26 rows=10 name=body></textarea></td></tr>
<tr><td colspan=2><div align=right><input type=submit value="送出"></td></tr>
</table>
</form>
<?
}
?>
</body>
</html>
變成我只要用瀏覽器就可以在任何地方用任何電腦收發信件。