有关发送邮件的错误
程序出现错误，望高手解答
程序如下：
<%@ Page Language= "C# " %>
<%@ Import Namespace= "System " %>
<%@ Import Namespace= "System.Net.Mail "%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<script runat= "server ">
protected void Button1_Click(object sender, EventArgs e)
{
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.From = new MailAddress(TextBox4.Text);
msg.To.Add(new MailAddress(TextBox1.Text));
int index1 = TextBox4.Text.LastIndexOf( "@ ");
string str = TextBox4.Text.Substring(index1);
string str1 = TextBox4.Text.Substring(0, index1 + 1);
msg.Subject = TextBox2.Text;
msg.Body = TextBox3.Text;
string attachFile;
attachFile=FileUpload1.FileName;
System.Net.Mail.Attachment mailadd = new Attachment(FileUpload1.PostedFile.InputStream, attachFile);
msg.Attachments.Add(mailadd);
SmtpClient smt = new SmtpClient();
smt.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
string smtpserver = "smtp. " + str;
smt.Host = smtpserver;
smt.Credentials = new System.Net.NetworkCredential(str1, TextBox5.Text.ToString());
smt.Send(msg);
Response.Write( "发送成功 ");
}
</script>
<html xmlns= "http://www.w3.org/1999/xhtml " >
<head id= "Head1 " runat= "server ">
<title> 无标题页 </title>
</head>
<body>
<form id= "form1 " runat= "server ">
<div>
<asp:Label ID= "Label5 " runat= "server " Text= "发件人地址： "> </asp:Label>
<asp:TextBox ID= "TextBox4 " runat= "server " Width= "184px "> </asp:TextBox> <br />
<br />
<asp:Label ID= "Label6 " runat= "server " Text= "密码： "> </asp:Label>
<asp:TextBox ID= "TextBox5 " runat= "server " TextMode= "Password "> </asp:TextBox> <br />
<br />
<asp:Label ID= "Label1 " runat= "server " Text= "收件人地址： "> </asp:Label>
<asp:TextBox ID= "TextBox1 " runat= "server " Width= "216px "> </asp:TextBox> <br />
<br />
<asp:Label ID= "Label2 " runat= "server " Text= "主题： "> </asp:Label>
<asp:TextBox ID= "TextBox2 " runat= "server " Width= "219px "> </asp:TextBox> <br />
<br />
<asp:Label ID= "Label4 " runat= "server " Text= "附件： "> </asp:Label>
<asp:FileUpload ID= "FileUpload1 " runat= "server " /> <br />
<br />
<asp:Label ID= "Label3 " runat= "server " Text= "内容： "> </asp:Label> <br />
<asp:TextBox ID= "TextBox3 " runat= "server " Height= "176px " Width= "348px "> </asp:TextBox> <br />
<br />
<br />
<asp:Button ID= "Button1 " runat= "server " Text= "发送 " OnClick= "Button1_Click " />
<asp:Button ID= "Button2 " runat= "server " Text= "取消 " /> </div>
</form>
</body>
</html>
------解决方案--------------------
把错误信息贴出来啊
[解决办法]
对比一下这个
http://www.51aspx.com/CV/JH1GEZ9ACZA70
[解决办法]
我估计你是用了新注册的邮箱去做发送把，，，我尝试过新注册的163 126 的邮箱都发不出，，旧注册的还可以发，没问题！
