使用smtp在Azure中部署时无法正常工作的电子邮件

Question

我正在使用以下代码使用smtp gmail发送电子邮件，它可以在我的机器上运行，但是当我在azure上部署时它不起作用。

 try
        {
            // Gmail Address from where you send the mail
            var fromAddress = new MailAddress( "k4@gmail.com","From Name");
            var toAddress = new MailAddress("mghazanfar@hotmail.co.uk", "To Name");
            const string fromPassword = "Meabana";
             string subject = "Feedback for Comic Maker from " + Request["name"];
             string body = Request["message"]+"\n\n\n\n\n\n";
             body += Request["email"];
             body += Request["phone"];


            var smtp = new SmtpClient
            {
                Host = "smtp.gmail.com",
                Port = 587,
                EnableSsl = true,
                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
            };
            using (var message1 = new MailMessage(fromAddress, toAddress)
            {
                Subject = subject,
                Body = body
            })
            {
                smtp.Send(message1);
                ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Email sent successfully')", true);
                email.Value = "";
                phone.Value = "";
                name.Value = "";
                message.Value = "";
            }
        }
        catch {
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Some problem occurred')", true);
        }

我收到了这个错误 SMTP服务器需要安全连接或客户端未经过身份验证。服务器响应为：5.5.1需要身份验证。

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