从同一电子邮件SMTP asp.net获取邮件

Question

I am working on sending contact information to admin when user fills contact form. Almost everything is working fine but, I am receiving mail from the same address. protected void submitButton_Click(object sender, EventArgs e) { System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(); mail.To.Add("admin@gmail.com"); mail.From = new MailAddress(EmailTextBox.Text, "Head", System.Text.Encoding.UTF8); mail.Subject = "Query"; mail.SubjectEncoding = System.Text.Encoding.UTF8; mail.Body = "Contact Details" + "<br/> <b>Name:</b>" + Request["app-name"] + " <br/> <b>Email - Address :</b>" + EmailTextBox.Text + "<br/> <b>Description :</b>" + Request["AppointmentMessage"] + "<br/> <b>Contact Number :</b>" + Request["app-num"]; mail.BodyEncoding = System.Text.Encoding.UTF8; mail.IsBodyHtml = true; mail.Priority = MailPriority.High; SmtpClient client = new SmtpClient(); client.Credentials = new System.Net.NetworkCredential("admin@gmail.com", "admin"); client.Port = 587; client.Host = "smtp.gmail.com"; client.EnableSsl = true; try { client.Send(mail); Page.RegisterStartupScript("UserMsg", "<script>alert('Successfully Send...')</script>"); } catch (Exception ex) { Exception ex2 = ex; string errorMessage = string.Empty; while (ex2 != null) { errorMessage += ex2.ToString(); ex2 = ex2.InnerException; } Page.RegisterStartupScript("UserMsg", "<script>alert('Sending Failed...');if(alert){ window.location='SendMail.aspx';}</script>"); } } }

Here, the admin email id is admin@gmail.com. When an user named user@gmail.com fills up contact form. When he submits that form, the admin is not receiving mail from the user@gmail.com . Instead he gets mail from admin@gmail.com

Help is appreciated.

Answer 1

If this is possible I can send emails as you without knowing your gmail credentials!

You are connecting to gmail smtp server from admin credentials, gmail will allow only to send email from field as admin or admin attached emails which already configured. It doesn't matter what you set as from address, gmail will over-write it for prevent spamming..

if you need to keep user in the email thread, you can use To or CC properties