c# - 将 System.Web.Mail 功能移植到 System.Net.Mail

Question

以下函数完美运行:

    protected void SendWebMailMessage(string DisplayName, string From, string ReplyTo,
        string To, string Subject, string Body, string Attachments)
    {
        System.Web.Mail.MailMessage msg = new System.Web.Mail.MailMessage();
        msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver",
             "smtpout.secureserver.net");
        msg.Fields.Add(
             "http://schemas.microsoft.com/cdo/configuration/smtpserverport", 25);
        msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", 
             2);
        msg.Fields.Add(
             "http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", 1);
        msg.Fields.Add(
             "http://schemas.microsoft.com/cdo/configuration/sendusername", From);
        msg.Fields.Add(
             "http://schemas.microsoft.com/cdo/configuration/sendpassword",
             mailpassword);
        msg.To = To;
        msg.From = DisplayName + "<" + From + ">";
        msg.BodyFormat = MailFormat.Html;
        msg.Subject = Subject;
        msg.Body = Body;
        msg.Headers.Add("Reply-To", ReplyTo);
        SmtpMail.SmtpServer = "smtpout.secureserver.net";
        SmtpMail.Send(msg);
    }

但是，我收到构建警告，告诉我 System.Web.Mail 已过时，并且我应该使用 System.Net.Mail。所以我使用了 System.Net.Mail，然后我想出了以下函数替换我的旧函数:

    protected void SendNetMailMessage(string DisplayName, string From, string ReplyTo, 
        string To, string Subject, string Body, string Attachments)
    {
        MailAddress addrfrom = new MailAddress(From, DisplayName);
        MailAddress addrto = new MailAddress(To);
        MailAddress replytoaddr = new MailAddress(ReplyTo);
        System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
        msg.From = addrfrom;
        msg.To.Add(addrto);
        msg.ReplyTo = replytoaddr;
        msg.IsBodyHtml = true;
        SmtpClient smtp = new SmtpClient("smtpout.secureserver.net");
        smtp.Credentials = new NetworkCredential(From, mailpassword);
        smtp.Send(msg);
    }

我没有收到任何异常或错误，但我的消息从未通过。任何人都可以告诉我我可能做错了什么？提前致谢。

Answer 1

如果我没记错的话...您正在使用 Goddady 托管服务。我也在使用它...并且我有 **relay-hosting.secureserver.net** 作为 SMTP 服务器。我不知道...可能是这样的...或者您没有在您的控制台中设置中继。