try
                {
                    TestMail t = new TestMail("aa@163.com", "内容", "标题");

                    int i = cm.ExecuteNonQuery();
                    if (t.sengmill_net() & i > 0)
                    {
                        Response.Write("<script language=javascript>alert('投诉提交成功')</script>");


                    }
                    redirect();
                }

using   System; 
using   System.Web.Mail; 


namespace   midlink_healthcare 
{ 

public   class   TestMail 
{ 
string   tb_from; 
string   tb_to; 
string   tb_mailBody; 
string   tb_smtpserver; 

string   tb_body; 
string   tb_sub; 
public     TestMail(string   to   ,string   body,string   sub) 
{ 


tb_to=to.Trim(); 
//tb_name=name.Trim(); 
tb_body=body.Trim(); 
tb_sub=sub.Trim(); 


} 

public   void   sengmill_net() 
{ 


tb_from= "xxx@xxxx.com ";//你使用的邮箱名字 

tb_mailBody=tb_body; 
tb_smtpserver= "xxx.xx.xxx.xxx ";//你使用的邮件服务器的ip地址 
System.Web.Mail.MailMessage   mailmsg   =   new   System.Web.Mail.MailMessage(); 
mailmsg.From   =   tb_from; 
mailmsg.To       =   tb_to; 
mailmsg.Body   =   tb_mailBody; 
mailmsg.Subject   =tb_sub; 


mailmsg.Fields.Add( "http://schemas.microsoft.com/cdo/configuration/smtpauthenticate ",   "1 "); 
//是否需要验证，一般是要的         
mailmsg.Fields.Add   ( "http://schemas.microsoft.com/cdo/configuration/sendusername ",   "xxxxx ");   
//自己邮箱的用户名         
mailmsg.Fields.Add( "http:/