电子邮件更改发件人：地址

Question

I'm doing a property listing site and is now preparing a contact form for each property.

As my client is also using a ticketing system which parse emails from a dedicated mailbox, it requires me to configure the contact form to email to the dedicated mailbox for their system to pick it up. I'm using ASP C#.

I need help on changing the "From" address in the contact form to the sender's email address in the form, codes are as shown below:

This is my aspx.cs

protected void SendMail()
{
    var fromAddress = "email@domain.com";
    var toAddress = "dedicatedmailbox@domain.com";
    const string fromPassword = "password";
    string subject = PropertyNameOnContact.Text.ToString();
    string body = "Subject: Online Enquiry for " + PropertyNameOnContact.Text + "\n";
    body += "Email: " + txtemail.Text + "\n";
    body += "From: " + txtname.Text + "\n";
    body += "Preferred contact Method: \n" + PreferredContact.Text + "\n";

    var smtp = new System.Net.Mail.SmtpClient();
    {
        smtp.Host = "smtp.gmail.com";
        smtp.Port = 587;
        smtp.EnableSsl = true;
        smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        smtp.Credentials = new System.Net.NetworkCredential(fromAddress, fromPassword);
        smtp.Timeout = 20000;
    }

    smtp.Send(fromAddress, toAddress, subject, body);
}

Answer 1

For a contact form like this, the address filled in by the user should never be the address used as from address. It should be the reply-to address. This is done so that the receiving mail server can make correct validations.

I suggest you create a MailMessage object, on which you can set all these parameters that the shorthand SmtpClient.Send doesn't have. On that you can add your addresses that should be replied to in MailMessage.ReplyToList , and the from adress as MailMessage.From .

The SmtpClient.Send method also accepts a MailMessage object, so it should be fairly easy.

Here's the MailMessage object on MSDN: http://msdn.microsoft.com/en-us/library/system.net.mail.mailmessage.aspx

Answer 2

As know there are two ways. which will not Affect any of the existing Process, Try this

• get the From Email-ID (fromAddress) from DataBase
• Configure the From Email_ID (fromAddress) in Web Config File which u can Access it for the Entire application.

u can change them whenever u want. without changing the C# source code.