发送邮件总是提示： smtp 服务器要求安全连接或客户端未通过身份验证，有谁碰到过？

Question

using System.Net.Mail;System.Net.Mail.SmtpClient client = new SmtpClient();
client.Host = "smtp.baosight.com";
client.UseDefaultCredentials = false;
//发件人邮箱和密码
client.Credentials = new System.Net.NetworkCredential("发件人邮箱地址", "密码");
client.DeliveryMethod = SmtpDeliveryMethod.Network;
//client.EnableSsl = true;
//发件人邮箱和收件人邮箱
System.Net.Mail.MailMessage message = new MailMessage("发件人邮箱地址", "收件人邮箱地址");
message.Subject = "系统邮件测试";
message.Body = "你好！";
message.BodyEncoding = System.Text.Encoding.UTF8;
message.IsBodyHtml = false;
try
{
   client.Send(message);   Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('发送成功')</script>");
   return;
}
catch (Exception ee)
{
   Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('" + ee.Message + "')</script>");
   return;
}发送时总是提示：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

Answer 1

mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", UserName)
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", PassWord)是不是这两句没加？

Answer 2

Public Function SendMail()
        Try
            Dim mail As New MailMessage
            mail.From = "<" + FromAddr + ">" + FromName
            mail.To = toAddress
            mail.Cc = CcAddress
            mail.Bcc = BccAddress
            mail.Subject = Subject
            mail.Body = CreateBody(Body, New String() {strCallerBasyoID})            mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true")
            mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1")
            mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", UserName)
            mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", PassWord)
            mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", Integer.Parse(smtpport))            System.Web.Mail.SmtpMail.SmtpServer = SearverIp
            System.Web.Mail.SmtpMail.Send(mail)        Catch ex As Exception
            HCLogger.WriteLog(HCLogger.LogLevel.ERR, "")
            Dim strFormBase As HCFormBase = HCFormBase.GetForm("HCErrorMessageForm")            If Not strFormBase Is Nothing Then
                strFormBase.CallingNotice(Nothing, Nothing, errorMessage)
            End If
        End Try
    End Function
#End Region
这个是我用的，可以发送的

Answer 3

以下代码可完成邮件发送:
        using System.Net.Mail;
        using System.Net.Mime;
        using System.Net.Cache;
        using System.Net;
        MailMessage message = new MailMessage();
        message.From = new MailAddress("@163.com");
        message.To.Add("qq.com");
        message.To.Add("qq.com");
        message.Subject = "";
        message.Body = "";
       
        Attachment data = new Attachment(Page.MapPath(""));        message.Attachments.Add(data);        SmtpClient smtp = new SmtpClient("smtp.163.com");        smtp.Credentials = new NetworkCredential("", "");        smtp.Send(message);

Answer 4

System.Net.Mail下没有Fields.Add属性

Answer 5

client.EnableSsl   =   true; 
改为false

Answer 6

client.EnableSsl       =       true;   
改为false没用的，都试过了，郁闷ing

Answer 7

private void sendMails(string tomail, string subject, string body,string fileroad)
    {//Send mail use smtp.163.com server....
        MailMessage objMailMessage;
        objMailMessage = new MailMessage();
        objMailMessage.From = new MailAddress("[email protected]","xierfly");
        objMailMessage.To.Add(tomail);
        objMailMessage.IsBodyHtml = true;
        objMailMessage.Subject = subject;
        objMailMessage.Body = body;
        //MailAttachment obj
        Attachment mailattent = new Attachment(fileroad);//添加一个附件
        objMailMessage.Attachments.Add(mailattent);        SmtpClient sclient = new SmtpClient("smtp.163.com");
        sclient.Credentials = new System.Net.NetworkCredential("****Username*****","****password***");
        try
        {
            sclient.Send(objMailMessage);
            this.Response.Write("<script>alert('Sent Successfully.');</script>");
            this.tbmail.Text = "";
        }
        catch(Exception ex)
        {
            HttpContext.Current.Response.Write(ex.Message);
        }
    }
-------这是我单独发送一个邮件的方法，你看看能不能帮忙。

Answer 8

System.Net.Mail下没有Fields.Add属性,郁闷呀!~~~~~~~~~