通过System.web.mail发送邮件时，未显示正确的“发件人”电子邮件地址

Question

我通过System.web.mail发送邮件，我的代码如下 -

 public static void SendEmail(string to, string from, string subject, string body, string SmtpServer, int SmtpPort, string SmtpUser,
         string SmtpPassword, bool ssl)
    {
        try
        {
            MailMessage myMail = new MailMessage();
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", SmtpServer);
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", SmtpPort);
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", "2");
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
            //Use 0 for anonymous
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", SmtpUser);
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", SmtpPassword);
            myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", ssl);
            myMail.From = from;
            myMail.To = to;
            myMail.Subject = subject;
            myMail.Body = body;

            // System.Web.Mail.SmtpMail.SmtpServer = SmtpServer + ':' + SmtpPort;
            System.Web.Mail.SmtpMail.Send(myMail);
        }
        catch (Exception ex)
        {
            throw;
        }
    }

此代码正在正确发送邮件，但当收件人收到电子邮件时，来自电子邮件的地址显示为网络凭据的用户名，而不是我传递的来自电子邮件地址。任何人都可以向我建议可能的解决方案吗？