Question

这里我想使用gmail smtp发送邮件。但我显示错误

SMTP服务器需要安全连接，否则客户端不需要认证。服务器响应为：5.5.1需要身份验证

按钮点击发送邮件。

HTML

<asp:TextBox ID="txtfrom" runat="server"></asp:TextBox>
<asp:TextBox ID="txtfrompassword" runat="server"></asp:TextBox>
<asp:TextBox ID="txtto" runat="server"></asp:TextBox>
<asp:TextBox ID="txtbody" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />

背后的代码

protected void Button1_Click(object sender, EventArgs e)
{
    MailMessage msg = new MailMessage(txtfrom.Text,txtto.Text);
    msg.Body = txtbody.Text;
    SmtpClient sc = new SmtpClient("smtp.gmail.com", 587);
    sc.Credentials = new NetworkCredential(txtfrom.Text, txtfrompassword.Text);
    sc.EnableSsl = true;
    sc.Send(msg);
    Response.Write("send");
}

Answer 1

您可以使用端口25

 SmtpClient sc = new SmtpClient("smtp.gmail.com", 25);

Answer 2

启用此选项

你可以使用STMP发送邮件

https://www.google.com/settings/security/lesssecureapps

邮件未使用gmail smtp发送

2 个答案: