我想通过 ASP.NET 发送邮件但发生错误

Question

我在此联系表单的后端使用 C#，而 html 是前端

   using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Web;
   using System.Web.UI;
   using System.Web.UI.WebControls;
   using System.Net.Mail;

   public partial class index : System.Web.UI.Page
   {
         protected void Send_Click(object sender, EventArgs e)
         {
              try
              {
                   MailMessage message = new MailMessage(From.Text, To.Text, Subject.Text, Body.Text);
                   message.IsBodyHtml = true;
                   SmtpClient client = new SmtpClient("smtp.gmail.com", 465);
                   client.EnableSsl = true;
                   // The credentials when I ran the code were correct.
                   client.Credentials = new System.Net.NetworkCredential("example@gmail.com","password");

                   client.Send(message);

                   status.Text = "Mail was sent successfully";
                   status.Text = "Send was clicked";
              }
              // This catch block is so that you can see what error 
              // occurs if there is an error
              catch(Exception ex)
              {
                 status.Text = ex.StackTrace;
              }
       }
 }

这是显示的错误

System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)

在 System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
在 System.Net.Mail.SmtpTransport.SendMail（MailAddress 发件人，MailAddressCollection 收件人，字符串 deliveryNotify，布尔 allowUnicode，SmtpFailedRecipientException& 异常）
在 System.Net.Mail.SmtpClient.Send(MailMessage message) 在 index.Send_Click(Object sender, EventArgs e) 在 C:\Users\robert.crider\source\repos\WebSite2\WebSite2\index.aspx.cs:line 37

Answer 1

确保您为 google smtp 和交付网络使用正确的端口。并且您已经在 Gmail 帐户设置中启用 IMAP 和/或 POP3 访问。

SmtpClient client= new SmtpClient
        {
           Host = "smtp.gmail.com",
           Port = 587,
           EnableSsl = true,
           DeliveryMethod = SmtpDeliveryMethod.Network,
           Credentials    = new NetworkCredential(yourgoogleemail, yourgooglepassword),
           Timeout = 3000
        };