Question

我正在使用Smtp发送邮件。邮件已成功发送但未送达。这背后的原因是什么。这是邮件服务器的一个问题吗？邮件发送过程在过去几年里运行正常。问题是第一次出现。

public bool SendMail(string p_strFrom, string p_strDisplayName, string p_strTo, string p_strSubject, string p_strMessage , string strFileName)
 {
     try
     {
         p_strDisplayName = _DisplayName;
         string smtpserver = _SmtpServer;
         SmtpClient smtpClient = new SmtpClient();
         MailMessage message = new MailMessage();
         MailAddress fromAddress = new MailAddress(_From,_DisplayName);
         smtpClient.Host = _SmtpServer;
         smtpClient.Port = Convert.ToInt32(_Port);
         string strAuth_UserName = _UserName;
         string strAuth_Password = _Password;
         if (strAuth_UserName != null)
         {
             System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential(strAuth_UserName, strAuth_Password);
             smtpClient.UseDefaultCredentials = false;
             if (_SSL)
             {
                 smtpClient.EnableSsl = true;
             }
             smtpClient.Credentials = SMTPUserInfo;
         }
         message.From = fromAddress;

         message.Subject = p_strSubject;
         message.IsBodyHtml = true;
         message.Body = p_strMessage;
         message.To.Add(p_strTo);
         try
         {
             smtpClient.Send(message);
             Log.WriteSpecialLog("smtpClient mail sending first try success", "");
         }
          catch (Exception ee)
         {
             Log.WriteSpecialLog("smtpClient mail sending first try Failed : " + ee.ToString(), "");
             return false;
         }
         return true;
     }
     catch (Exception ex)
     {
         Log.WriteLog("smtpClient mail sending overall failed : " + ex.ToString());  
         return false;
     }
 }

Answer 1

邮件已成功发送但未送达

如果它是从您的邮件服务器成功发送的，那么未送达的可能原因可能是客户端上的邮件过滤器阻止了它或者在垃圾邮件中传送。

Smtp邮件传递失败

1 个答案: