邮件发送,求助.逼死我了

Question

public void send_()
        {            SmtpClient smtpClient = new SmtpClient();
            smtpClient.Host = "smtp.sina.com.cn";
            smtpClient.Port = 25;
            //smtpClient.EnableSsl = true;
            smtpClient.UseDefaultCredentials = false;
            smtpClient.Credentials = new System.Net.NetworkCredential("q100191677"," woshini88");
            smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;            MailMessage message = new MailMessage();
            message.From = new MailAddress("[email protected]");
            message.To.Add(new MailAddress("[email protected]"));
            message.Subject = "标题标题";
            message.SubjectEncoding = System.Text.Encoding.UTF8;
            message.Body = "空的空的";
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = true;
            message.Priority = MailPriority.High;                       //foreach (Attachment attachment in CollectionInfo(document))
            //{
            //    message.Attachments.Add(attachment);
            //}
            try
            {
                smtpClient.Send(message);
               
            }
            catch (Exception e)
            {
               
                throw e;
            }
        }
这段代码有什么问题?
邮箱账号密码没错

Answer 1

SMTP 服务器要求安全连接或客户端未通过身份验证。 服务器响应为: Authentication required
老会报这个异常

Answer 2

换其他邮箱
Jmail发送
public void Send(string to, string from, string subject, string body, string userName, string password, string smtpHost)
  {
  MailAddress from = new MailAddress(from);
  MailAddress to = new MailAddress(to);
  MailMessage message = new MailMessage(from, to);
  message.Subject = subject;
  message.IsBodyHtml = true;
  message.Body = body;
  SmtpClient client = new SmtpClient(smtpHost);
  client.Credentials = new NetworkCredential(userName, password);
  client.Send(message);
  }

Answer 3

SMTP 服务器要求安全连接或客户端未通过身份验证。你设一下SSL属性为true试试

Answer 4

MailAddress from = new MailAddress("[email protected]", "东东");          //邮件的发件人,后面为显示的名字
            MailMessage mail = new MailMessage();           
            mail.Subject = txtSubject.Text;                                            //设置邮件的标题
            mail.From = from;                                                          //设置邮件的发件人
            
            //多人发送
            string address = "";
            string displayName = "";         
            string[] mailNames = (txtMailTo.Text + ";").Split(';');
            foreach (string name in mailNames)
            {
                if (name != string.Empty)
                {
                    if (name.IndexOf('<') > 0)
                    {
                        displayName = name.Substring(0, name.IndexOf('<'));
                        address = name.Substring(name.IndexOf('<') + 1).Replace('>', ' ');
                    }
                    else
                    {
                        displayName = string.Empty;
                        address = name.Substring(name.IndexOf('<') + 1).Replace('>', ' ');
                    }
                 //   mail.To.Add(new MailAddress(address, displayName));
                    mail.CC.Add(new MailAddress(address, displayName));                //收件人地址的集合
                }
           
            }
            
            mail.Body = txtBody.Text;                                                  //设置邮件的内容            
            mail.BodyEncoding = System.Text.Encoding.UTF8;                             //设置邮件的格式
            mail.IsBodyHtml = true;                                                    //设置正文是否为HTML格式
            mail.Priority = MailPriority.Normal;                                       //设置邮件的发送级别
            if (txtMailTo.Text != "")
            {
            string fileName = txtUpFile.Text.Trim();                                   //设置邮件的附件
            fileName = fileName.Substring(fileName.LastIndexOf("\\") + 1);             //取文件名
            mail.Attachments.Add(new Attachment(fileName));                            //添加附件到邮件当中
            }
            mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnSuccess;
            SmtpClient client = new SmtpClient();
            client.Host = "smtp.163.com";                                              //设置SMTP的地址，注意：是什么邮箱就应该用相对应的地址          
            client.Port = 25;                                                          //设置用于 SMTP 事务的端口，默认的是 25
            client.UseDefaultCredentials = false;       
            client.Credentials = new System.Net.NetworkCredential("*****", "*****");//我的邮箱的登录名和密码。就是发送方的用户名和密码，要对应上面的Host地址
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            
            client.Send(mail);                                                         //邮件的正式发送
            MessageBox.Show("发送成功");                    
        }        private void btn_send_Click(object sender, EventArgs e)
        {
            sendMail();
        }

Answer 5

你下面的代码试试：
            SmtpClient smtpClient = new SmtpClient("smtp.sina.com.cn");
            smtpClient.UseDefaultCredentials = false;
            smtpClient.Credentials = new NetworkCredential("[email protected]", " woshini88");
            smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;            MailAddress from = new MailAddress("[email protected]", "Me", System.Text.Encoding.Default);
            MailAddress to = new MailAddress("[email protected]");
            MailMessage message = new MailMessage(from, to);
            message.Subject = "标题标题";
            message.SubjectEncoding = Encoding.GetEncoding("GB2312");
            message.Body = "空的空的";
            message.BodyEncoding = Encoding.GetEncoding("GB2312");
            message.Priority = MailPriority.High;

Answer 6

smtpClient.Credentials = new System.Net.NetworkCredential("[e-mail]"," woshini88");

Answer 7

smtpClient.Credentials = new System.Net.NetworkCredential("q100191677"," woshini88");
这里的账号用全称 [email protected]

Answer 8

public static bool sendMessage(string body,string title, string email)
    {
        MailMessage message = new MailMessage();
        message.From = new MailAddress("[email protected]", "昵称");
        message.To.Add(new MailAddress(email.Trim()));
        message.Subject = title;
        message.IsBodyHtml = true;
        message.BodyEncoding = Encoding.UTF8;
        message.Body = body;
        message.Priority = MailPriority.High;
        SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
        client.Credentials = new System.Net.NetworkCredential("[email protected]", "xx");
        client.EnableSsl = true; //经过ssl加密 
        client.Send(message);        return true;
    }
gmail能发绝大多数邮箱！

Answer 9

http://mail.sina.com.cn/help2/client01.html

Answer 10

身份验证 现在一般的stmp服务器都要