电子邮件功能无法在C＃中运行 [英] Email functionality not working in C#

问题描述

我正在尝试为我开发的网站实现自动电子邮件功能。在最初的基础上，我使用Gmail凭据测试了电子邮件代码，它运行良好。以下代码工作正常。

  public   static   int  SendEmail（ string  来自， string  to， string  subject， string  body）
 {
  int  result =  0 ; 
 MailMessage msg =  new  MailMessage（）; 
 MailMessage mail =  new  MailMessage（）; 
 SmtpClient SmtpServer =  new  SmtpClient（）; 
 SmtpServer.Credentials =  new  System.Net.NetworkCredential（  [e-mail]，  MyGmailPassword）; 
 SmtpServer.Port =  587 ; 
 SmtpServer.Host =   smtp.gmail.com; 
 SmtpServer.EnableSsl =  true ; 
 mail =  new  MailMessage（）; 
 尝试 
 {
 mail.From = 新 MailAddress（< span class =code-sdkkeyword> from ， ，System.Text。 Encoding.UTF8）; 
 mail.To.Add（to）; 
 mail.Subject = subject; 
 mail.IsBodyHtml =  true ; 
 mail.Body = body; 
 mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure; 
 mail.ReplyToList.Add（  [e-mail]）; 
 SmtpServer.Send（mail）; 
 result =  1 ;  //   ---------消息成功发送 
} 
  catch （例外情况）
 {
 result =  2 ;  //   ---------发送消息时发生错误 
} 
 返回结果; 
} 
 

当我使用上述代码的客户端电子邮件设置时，它无效。客户向我提供了以下信息。



官方EmailID /密码：两个不同的电子邮件地址及其密码

SMTP：

外发服务器：用于SSL和非SSL设置的两个不同服务器

SMTP端口：587和465



我尝试了所有可能的电子邮件/密码组合，SMTP端口..但是没有工作。



这些组合我得到两种错误......



错误1：System.Security.Authentication.AuthenticationException：根据验证程序，远程证书无效。

错误2：操作已超时。



但是我可以使用提供的凭据登录webmail，所以我猜两个emailID和它们各自的密码都是正确的。



任何帮助将不胜感激。



谢谢和问候，



Sam

解决方案

请看看以下链接，你会有所了解。



此AuthenticationException错误的解决方案 [ ^ ]

远程证书根据验证程序无效 [ ^ ]

使用c在asp.net中发送邮件错误＃ [ ^ ]

它有效，我添加了System.Net命名空间和System.Net.Mail命名空间......

I am trying to implement automatic email functionality for a website I developed. On initial basis I tested email code with Gmail credentials and it worked fine. Below is the code which is working fine.

public static int SendEmail(string from, string to, string subject, string body)
  {
      int result = 0;
      MailMessage msg = new MailMessage();
      MailMessage mail = new MailMessage();
      SmtpClient SmtpServer = new SmtpClient();
      SmtpServer.Credentials = new System.Net.NetworkCredential("[e-mail]", "MyGmailPassword");
      SmtpServer.Port = 587;
      SmtpServer.Host = "smtp.gmail.com";
      SmtpServer.EnableSsl = true;
      mail = new MailMessage();
      try
      {
          mail.From = new MailAddress(from, "", System.Text.Encoding.UTF8);
          mail.To.Add(to);
          mail.Subject = subject;
          mail.IsBodyHtml = true;
          mail.Body = body;
          mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
          mail.ReplyToList.Add("[e-mail]");
          SmtpServer.Send(mail);
          result = 1; //--------- MESSAGE SENT SUCCESSFULLY
      }
      catch (Exception ex)
      {
          result = 2; //--------- ERROR OCCURRED WHILE SENDING MESSAGE
      }
      return result;
  }

When I used client's email settings with above code, it is not working. Client has provided me with below information.

Official EmailID/Password: Two different email address and their passwords
SMTP:
Outgoing Server: Two different server for SSL and NON SSL settings
SMTP PORT: 587 and 465

I tried all the possible combination of email/password, SMTP port..etc but none is working.

I am getting two kinds of error with these combinations...

err 1: System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure.
err 2: The operation has timed out.

But I am able to login on webmail with the credentials provided, so I guess both the emailIDs, and their respective passwords are correct.

Any help would be appreciated.

Thanks and regards,

Sam

解决方案

Please have a look on the following links, you will get some idea.

Solution for this AuthenticationException error[^]
the remote certificate is invalid according to the validation procedure[^]
mail sending error in asp.net with c#[^]

It worked, I added System.Net Namespace along with System.Net.Mail namespace...

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