Question

我在尝试让我的程序用户向我的Gmail帐户发送电子邮件时遇到问题，这是我的设置：

这是我的代码：

Imports System.Net.Mail

Public Class Form1
Private Sub TextBox2_TextChanged(ByVal sender As Object, ByVal e As EventArgs) Handles txtBody.TextChanged
    lblCharCount.Text = String.Format("Letter Count: {0}", txtBody.Text.Length)
End Sub

Private Sub btnSend_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSend.Click
    If YourEmailTextBox.Text <> "" AndAlso txtBody.Text <> "" Then
        Dim message As New MailMessage
        Dim smtp As New SmtpClient
        message.To.Add(YourEmailTextBox.Text.Trim())
        message.From = New MailAddress(YourEmailTextBox.Text, "heading")
        message.Subject = txtSubject.Text
        message.Body = txtBody.Text
        smtp.Host = "smtp.gmail.com"
        smtp.Port = "587"
        smtp.EnableSsl = True
        smtp.Credentials = New Net.NetworkCredential("MyGmailAccount@gmail.com", "MyPassword")
        Try
            smtp.Send(message)
            MsgBox("your message has been sent")

        Catch ex As Exception
            MsgBox(ex.Message)
            Exit Sub
        End Try
    Else
        MsgBox("Please enter a message into the body and the email address of the recipient", MsgBoxStyle.Information)
    End If
End Sub
End Class

这就是问题所在：

一些帮助请...

Answer 1

无法查看错误框后面的内容，但您可能无法正确设置smtp.Credentials。这是一个例子：http://www.codeproject.com/Articles/20546/How-to-Send-Mails-from-your-GMAIL-Account-through

另见：Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

使用VB.net 2010向Gmail帐户发送电子邮件

1 个答案: