Problems occur While sending mail with attachment on my web hosting server

hi crish,
      Thanks for reply,

      While sending mail in my "web hosting server" is working perfectly.  sending mail with attachment  code here:

                       MailMessage objEmail = new MailMessage();

                        objEmail.To.Add(txtemail.Text.ToString());

                        objEmail.From = new MailAddress("[email protected]");

                        objEmail.Subject = "User Account Details";

                        objEmail.Body ="Your User Account was created as a " ;

                        objEmail.Priority = System.Net.Mail.MailPriority.High;

                        objEmail.IsBodyHtml = true;

                       string strFileName = FileUpload1.PostedFile.FileName;

                       Attachment attFilename = new Attachment(strFileName);

                       objEmail.Attachments.Add(attFilename);
                    
                      SmtpClient smtpclient = new SmtpClient();
 
                      smtpclient.Send(objEmail);

SMTP Server mention in webconfig.
 but i have doubt, Is it attached document is saved on my web hosting server and then sent or what to do ?
 and also please explain live credentials.

Please help me,
Advance thanks

hi

first try to sending mail without attachment. If mail send functionality working perfectly in your server then give right to you attachment saved folder. It will work. Also check are you using live credentials for mail sending or not. because its needs (like emailid and serverport0