[求助]无效的类别字符串

☆冬虫草☆

<%@language=vbscript codepage=936 %>
<!--#include file="Inc/Conn.asp"-->
<table width="100%" height="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="862" align="center" valign="top"> <br> <br> <b>发 送 邮 件</b><br>
<br> <br> <%
'发送
set rs=server.createobject("adodb.recordset")
sql="select * from email "
rs.open sql,conn,1,3
'读取默认的邮件标题及内容
set rs1=server.createobject("adodb.recordset")
sql1="select * from maildefault "
rs1.open sql1,conn,1,3
'设置发信人
frommail=request("frommail")
if frommail="" then
frommail=rs1("frommail")
end if
'设置邮件主题
mailsubject=request("mailsubject")
if mailsubject="" then
mailsubject=rs1("mailsubject")
end if
'设置邮件内容
mailbody=request("mailbody")
if mailbody="" then
mailbody=rs1("mailbody")
end if
'判断对谁发信
tomail=request("tomail")
'写发信信息
response.write "发信人地址: "&frommail
response.write "<br><br><br>"
if tomail<>"" then
response.write "收信人地址："&tomail
else
response.write "正在进行邮件群发！"
end if
if tomail<>"" then
'对于单一用户发信
Set objCDOMail = Server.CreateObject("CDONTS.NewMail")
objCDOMail.From = frommail
objCDOMail.To = tomail
objCDOMail.Subject = mailsubject
objCDOMail.Body = mailbody
objCDOMail.Send
Set objCDOMail = Nothing
else
'对于在用户数据库中的全体用户发信
for i=1 to rs.recordcount
tomail=rs("email")
Set objCDOMail = Server.CreateObject("CDONTS.NewMail")
objCDOMail.From = frommail
objCDOMail.To = tomail
objCDOMail.Subject = mailsubject
objCDOMail.Body = mailbody
objCDOMail.Send
Set objCDOMail = Nothing
rs.movenext
next
end if
response.write "<br><br><br>"
response.write "邮件发送成功！^&^"
'response.write "<br><br><br>"
'response.write rs1("mailsubject")
%> <a href="Sendmail.asp">返回</a> </td>
</tr>
</table>