SmtpException在发送电子邮件

本文介绍了SmtpException在发送电子邮件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想通过我的C＃代码发送电子邮件，但我得到 SmtpException

一个连接尝试失败，因为连接的方没有正确一段时间后响应或已建立的连接失败，因为连接主机未能响应173.194.67.109:587

这里是我如何发送电子邮件：

字符串HostAddress =smtp.gmail。 COM; 味精MAILMESSAGE新= MAILMESSAGE（）; msg.From =新的MailAddress（fromEmail）; msg.Subject =测试邮件; msg.Body =嗨测试发票; msg.IsBodyHtml = TRUE; msg.To.Add（新MailAddress（ramshaafaq2012@gmail））; SmtpClient客户端=新SmtpClient（）; client.Host = HostAddress; client.EnableSsl = TRUE; 的NetworkCredential =空间日志相册新的NetworkCredential（）; creadit.UserName = msg.From.Address; creadit.Password =密码; client.UseDefaultCredentials = TRUE; client.Credentials =空间日志相册; client.Port = 587; client.Send（MSG）;

解决方案

您的问题就在这里：

client.UseDefaultCredentials = TRUE; client.Credentials =空间日志相册;

您指定的一组凭据，但你的也的告诉 SmtpClient 使用默认凭据（即登录用户的Windows用户名和密码）。设置 UseDefaultCredentials 设置为false，它会使用你提供的凭据来代替。

I am trying to send Email through my C# code but I am getting SmtpException

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 173.194.67.109:587

Here is how I am sending Email:

string HostAddress = "smtp.gmail"; MailMessage msg = new MailMessage(); msg.From = new MailAddress(fromEmail); msg.Subject = "Test Email"; msg.Body = "Hi testing invoice"; msg.IsBodyHtml = true; msg.To.Add(new MailAddress("ramshaafaq2012@gmail")); SmtpClient client = new SmtpClient(); client.Host = HostAddress; client.EnableSsl = true; NetworkCredential creadit = new NetworkCredential(); creadit.UserName = msg.From.Address; creadit.Password = Password; client.UseDefaultCredentials = true; client.Credentials = creadit; client.Port = 587; client.Send(msg);

解决方案

Your problem is here:

client.UseDefaultCredentials = true; client.Credentials = creadit;

You are specifying a set of credentials but you are also telling SmtpClient to use the default credentials (i.e. the Windows username and password of the logged-in user). Set UseDefaultCredentials to false and it will use your supplied credentials instead.