Question

当我使用此代码在Visual Studio 2012服务器（本地主机）上发送邮件时，邮件已成功发送。但是当我从smarterasp.net免费获得网络托管时，它显示了身份验证问题。发生了什么问题？

Private Sub sendCode()

        'email verify
        Dim Random As Random = New Random()
        activationCode = Random.Next(1001, 9999).ToString()

        Session("activationCode") = activationCode

        'email sending
        Dim smtp As SmtpClient = New SmtpClient()
        smtp.Host = "smtp.gmail.com"
        smtp.Port = 587
        smtp.EnableSsl = True
        smtp.UseDefaultCredentials = False
        smtp.Credentials = New NetworkCredential("xyz@xyz.com", "xxxxxxx")

        Dim msg As MailMessage = New MailMessage("xyz@xyz.com", Session("toEmail"), "Activation Code to verify Email Address", "Dear, Alumni your Activation Code is " + activationCode + "\n\n\nThanks & Regards\nVidyasagar University CS Students")

        Try
            smtp.Send(msg)
            lblMessage.Text = "Mail sent successfully"
            Session("isFromCheck") = "yes"
            Response.Redirect("emailVerification.aspx")
        Catch ex As Exception
            lblMessage.Text = ex.Message
        End Try

    End Sub

我希望像在开发服务器上一样成功发送邮件但它告诉我------->

SMTP服务器需要安全连接，或者客户端未通过身份验证。服务器响应为：5.5.1需要身份验证。了解更多说明：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中起源的更多信息。

异常详细信息：System.Net.Mail.SmtpException：SMTP服务器   需要安全连接或客户端未通过身份验证。的   服务器响应为：5.5.1需要身份验证。了解更多信息

源错误：

第90行：第91行：第92行：smtp.Send（msg）行   93：Session（“ isFromCheck”）=“是”

源文件：   h：\ root \ home \ subhankarjana-001 \ www \ alumnifeedback \ check.aspx.vb
  行：92

来自smarterasp.net的Web托管。邮件未发送，表明SMTP服务器需要安全连接

0 个答案: