System.dll中出现未处理的"System.Net.Mail.SmtpException"类型异常

Question

我正在尝试非常简单的教程,如何通过.NET和发送电子邮件C#.但是,当我尝试执行代码时,我得到以下异常:

System.dll中发生未处理的"System.Net.Mail.SmtpException"类型的异常附加信息:操作已超时.

所以我所做的就是找到我想将邮件发送到的服务器设置.这在我的国家很受欢迎:

Incoming settings

Protocol -> POP
Email address -> username@abv.bg
Username -> username@abv.bg
Password -> password
POP server -> pop3.abv.bg
Security type -> SSL
Server port -> 995

Outgoing server settings

Username -> username@abv.bg
Password -> password
SMTP server -> smtp.abv.bg
Security type -> SSL
Server port -> 465

然后我创建了一个Console project在我的主方法中我有这个代码:

        SmtpClient client = new SmtpClient("smtp.abv.bg");
        client.Port = 465;
        client.EnableSsl = true;
        client.Timeout = 100000;
        client.DeliveryMethod = SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;
        client.Credentials = new NetworkCredential(
         "username@abv.bg", "password");

        MailMessage msg = new MailMessage();
        msg.To.Add("username@abv.bg");
        msg.From = new MailAddress("username@abv.bg");
        msg.Subject = "Test subject";
        msg.Body = "Test test test...";
        client.Send(msg);

由于我没有这方面的经验,我只是尝试你看到的代码.无需任何其他设置.我认为唯一不应该是问题,但我认为值得一提:

         client.Credentials = new NetworkCredential(
         "username@abv.bg", "password");

和这里:

         msg.To.Add("username@abv.bg");

我正在使用相同的电子邮件.但我认为这应该不是问题.知道我在这里做错了什么吗？

Answer 1

这是我多年前写的一个用于测试的工作示例(使用Gmail).

public  void sendEmail(string body)
        {
            if (String.IsNullOrEmpty(email))
                return;
            try
            {
                MailMessage mail = new MailMessage();
                mail.To.Add(email);
                mail.To.Add("xxx@gmail.com");
                mail.From = new MailAddress("yyy@gmail.com");
                mail.Subject = "sub";

                mail.Body = body;

                mail.IsBodyHtml = true;
                SmtpClient smtp = new SmtpClient();
                smtp.Host = "smtp.gmail.com"; //Or Your SMTP Server Address
                smtp.Credentials = new System.Net.NetworkCredential
                     ("yyy@gmail.com", "pw"); // ***use valid credentials***
                smtp.Port = 587;

                //Or your Smtp Email ID and Password
                smtp.EnableSsl = true;
                smtp.Send(mail);
            }
            catch (Exception ex)
            {
                print("Exception in sendEmail:" + ex.Message);
            }
        }

我会尝试使用Gmail这个功能,以消除网络相关的问题,如防火墙.当它工作时,剩下的就是为SMPT服务器找到合适的settigs