Question

我正在尝试通过电子邮件发送密钥代码，但每次我收到此错误： - “服务器拒绝了发件人地址。服务器响应为：530 5.7.0必须首先发出STARTTLS命令.e6sm29167643pfj。 71 - gsmtp。“。我认为问题出在SendMails（）上，但我没有得到那个问题。请帮帮我。我正在使用Visual Studio社区2015？

以下是代码： -

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Web.Mail;
using System.Web.Util;


public partial class admin_ExamSchedule : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
            int examtypeid = Convert.ToInt32(Session["examtypeid"].ToString());
            ddlExamIdNotAttempted.DataSource = objAttemptexam.getNotAttemptedExamId(examtypeid);
            ddlExamIdNotAttempted.DataValueField = "ExamId";
            ddlExamIdNotAttempted.DataTextField = "ExamName";
            ddlExamIdNotAttempted.DataBind();

            //  Response.Write("<script>alert('Must Select Any One')</script>");
            //ddlExamIdAttempted.DataSource = objAttemptexam.getAttemptedExamId();
            //ddlExamIdAttempted.DataValueField = "ExamId";
            //ddlExamIdAttempted.DataTextField = "ExamName";
            //ddlExamIdAttempted.DataBind();
    }
}
BALexam objAttemptexam = new BALexam();
protected void btnSubmit_Click(object sender, EventArgs e)
{
        try
        {
            objAttemptexam.uid = Convert.ToInt32(Session["uid"].ToString());
            objAttemptexam.ExamReqDate = Convert.ToDateTime(Session["preferdate"]).ToString();
            objAttemptexam.ExamAssignDate =txtAssignExamDate.Text;
            objAttemptexam.ExamId = Convert.ToInt32(ddlExamIdNotAttempted.SelectedValue);
            objAttemptexam.ExamRequestId = Convert.ToInt32(Session["ExamRequestId"].ToString());
         //   objAttemptexam.UserName = Session["User"].ToString();
            objAttemptexam.KeyCode = txtKeyCode.Text;

            string strMsg;
            SendMails();
            int i = objAttemptexam.InsertScheduleExam(out strMsg);
            if (i > 1)
            {
                ClearData();
                LblMsg.Text = strMsg;
            }
            else
                LblMsg.Text = strMsg;
        }
        catch (Exception ex)
        {
            LblMsg.Text = ex.Message;
        }
}
void SendMails()
{
    MailMessage objMail = new MailMessage();
    objMail.From = "abc27@gmail.Com";
    objMail.To = "def4444@gmail.com";
    objMail.Subject = "OnLineExam Schedule.";
    objMail.BodyFormat = MailFormat.Html;
    objMail.Body = "Your Key                 : " + txtKeyCode.Text + "" + "\n" +
                   "Your ExamId              : " + Convert.ToInt32(ddlExamIdNotAttempted.SelectedValue) + "" + "\n" +
                   "Your ExamDate            : " + txtAssignExamDate.Text;

    SmtpMail.SmtpServer = "smtp.gmail.com";

    SmtpMail.Send(objMail);
    Page.RegisterClientScriptBlock("Dhanush", "<script>alert('Key Send to Student Successfully...')</script>");
}

private void ClearData()
{
    txtAssignExamDate.Text = txtKeyCode.Text = "";
}
protected void ddlExamIdAttempted_DataBound(object sender, EventArgs e)
{
    ddlExamIdNotAttempted.Items.Insert(0, "--Select--");
}
protected void ddlExamIdNotAttempted_SelectedIndexChanged(object sender,     EventArgs e)
{

}
protected void LB_Click(object sender, EventArgs e)
{
    Response.Redirect("frmShowExamRequest.aspx");
}
}

Answer 1

只需检查您的错误消息，它就会明确指出问题：您没有使用安全连接，Gmail不允许通过不安全的连接发送。

顺便说一下：不推荐使用SmtpMail类，建议使用System.Net.SmtpClient。

错误： - 服务器拒绝了发件人地址。服务器响应为：530 5.7.0必须首先发出STARTTLS命令。 e6sm29167643pfj.71 - gsmtp

1 个答案: