Asp.net SMTP Gmail失败 [英] Asp.net SMTP Gmail Failed
问题描述
在写我重复问题的评论之前，我想说我已经阅读并尝试了所有可能的方法.
before writing a comment that I am duplicating questions, I want to say that i've read and tried everything that could be possible.
我正在尝试通过gmail smtp发送电子邮件.我使用ASP.NET WebForm，也尝试在.net 4.0的服务器上部署网站.
I am trying to send an email by gmail smtp. I use ASP.NET WebForm, also tried to deploy website on the server with .net 4.0.
我的Gmail帐户已通过启用以下各项进行配置:POP，IMAP协议.另外，安全性较低的应用已打开，并且禁用了两个因素身份验证.
My Gmail Account has been configured by enabling: POP, IMAP protocols. Also less secure app was Turned ON and two factor authentication is disabled.
这是我发送电子邮件的代码:
Here is my code for sending emails:
try
{
SmtpClient smtp = new SmtpClient("smtp.gmail.com", 465);
smtp.EnableSsl = true;
smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
smtp.UseDefaultCredentials = false;
smtp.Credentials = new NetworkCredential("email", "password");
MailMessage masage = new MailMessage();
masage.To.Add("email");
masage.From = new MailAddress("email");
masage.Subject = "subject";
masage.Body = "Hello";
smtp.Send(masage);
}
catch (Exception eX)
{
throw new Exception("cDocument: Error occurred trying to Create an Email" + Environment.NewLine + eX.Message);
}
问题是，当我尝试发送电子邮件时，出现错误
So problem is, when I am trying to send an email, I have an error
发送邮件失败.
Failure sending mail.
请帮我找出问题所在.
更新: 我尝试使用所有端口465和587. 仅在按下发送按钮后才会出现按摩. 我使用System.Net.Mail;
Update: I tried to use all ports 465 and 587. Massage appears only after pressing button for sending. I use System.Net.Mail;
为什么这个问题是唯一的: 因为我尝试使用所有端口，并且拥有所有发送权限，但是仍然有错误.
Why this question is unique: Because I tried to use all ports and I have all permissions for sending, but still have an error.
以下是发送"按钮的代码:
Here is a code for Sending button:
public void btn_submit_Click(object sender, EventArgs e)
{
//comment
string comment = id_comment.Text.Replace("'", "\"");
//comment end
bool check = id_check_terms.Checked;
string Username = System.Security.Principal.WindowsIdentity.GetCurrent().Name.ToString();
string Username_new = Username.Replace("APAC\\", "");
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
con.Open();
//username
var Fullname = "Select FirstName From UserData where (Employee='"+Username_new+"')";
SqlCommand Fullname_command = new SqlCommand(Fullname, con);
object Fullname_object = Fullname_command.ExecuteScalar();
string Fullname_converted = Convert.ToString(Fullname_object);
//usernitemame
var items = "Select item From Basket where (Username='" + Username_new + "')";
SqlCommand items_command = new SqlCommand(items, con);
object items_object = items_command.ExecuteScalar();
string items_converted = Convert.ToString(items_object);
List<String> columnData = new List<String>();
List<String> emaildata = new List<String>();
List<String> emaildatacc = new List<String>();
using (con)
{
//email primary
string email = "Select Email From MBAccessoriesEmail where TOorCC='1'";
using (SqlCommand command = new SqlCommand(email, con))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
emaildata.Add(reader.GetString(0));
}
}
}
string email_primary = string.Join(", ", emaildata);
//endemail
//email cc
string emailcc = "Select Email From MBAccessoriesEmail where TOorCC='2'";
using (SqlCommand command = new SqlCommand(emailcc, con))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
emaildatacc.Add(reader.GetString(0));
}
}
}
string email_cc = string.Join("; ", emaildatacc);
//endemail
this.GridView1.Columns[6].Visible = false;
if (check == true)
{
if (GridView1.Rows.Count == 0)
{
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "<script>alert('You dont have anything in your basket.');</script>", false);
}else
{
try {
MailMessage mail = new MailMessage();
mail.To.Add("email");
mail.From = new MailAddress("email");
mail.Subject = "subject";
mail.Body = "Hello";
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.Credentials = new System.Net.NetworkCredential("email", "password");
smtp.EnableSsl = true;
smtp.Send(mail);
}
catch (Exception eX)
{
throw new Exception("cDocument: Error occurred trying to Create an Email" + Environment.NewLine + eX.Message);
}
cmd.CommandText = "Delete Basket where Username='" + Username_new + "'";
cmd.ExecuteNonQuery();
con.Close();
Response.Redirect("ShoppingCart.aspx");
}
}
}
}
推荐答案
Google提供了高度安全的验证，可避免从其他设备发送电子邮件，而您需要向该Google帐户授予权限.
Google provides high security validations, to avoid send email from other device your need to give permission to that google account.
从以前用于访问的其他设备上访问 https://g.co/allowaccess 您的Google帐户，然后按照说明进行操作.
Go to https://g.co/allowaccess from a different device you have previously used to access your Google account and follow the instructions.
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