Asp.net mvc 4 MVC使用SmtpClient发送电子邮件

这是我的代码尝试发送邮件如果你有任何想法来解决这个问题，请帮我

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

执行以下行时：

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

smtp.Sendmsg

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

它抛出一个错误： '无法解析远程名称：https://smtp.gmail.com"

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

---

我能做些什么来解决这个问题，有人能帮我吗？

换成smtp.gmail.com，你需要验证一个正确的gmail帐户。以下示例显示。

您需要将SMTP主机更改为SMTP.gmail.com：

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

---

主机名不包括传输协议，但当您指定EnableSsl=true时，您将传输协议设置为SSL。请注意，如果您是从gmail发送，请确保您的网络凭据使用的是gmail帐户。

我将smtp更改为smtp.Host=smtp.gmail.com，但现在它抛出了一个错误：smtp服务器需要安全连接或客户端未经身份验证。服务器响应为：需要5.5.1身份验证

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }

---

我想我的问题是空凭证

我真诚地希望这不是您的hotmail密码中的凭据。

enter code here
        public ActionResult ContactForm(Contact cnt)
    {
        BlogApplicationEntities db = new BlogApplicationEntities();
        if (ModelState.IsValid)
        {
            try
            {
                MailMessage msg = new MailMessage();
                SmtpClient smtp = new SmtpClient();
                msg.To.Add(new MailAddress("send to mail address"));
                msg.Subject = "Contact Us";
                msg.Body += "\nFirst Name=" + cnt.FirstName;
                msg.Body += "Last Name=" + cnt.LastName;
                msg.Body += "Email=" + cnt.Email;
                msg.From = new MailAddress("mailaddress", "Jhon");
                msg.Body += "Comments=" + cnt.Comment;
                msg.IsBodyHtml = true;

                smtp.Credentials = new System.Net.NetworkCredential("network mail address", "**password**");
                smtp.Host = "https://smtp.gmail.com";
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.UseDefaultCredentials = false;
                smtp.Port = 587;
                smtp.Send(msg);
                msg.Dispose();
                db.Contacts.Add(cnt);
                db.SaveChanges();
                return View("Success");
            }
            catch (Exception)
            {

                return View("Error");
            }
        }


        return View();

    }