Asp.net 网站电子邮件错误

Question

我创建了一个简单的联系表单...当我单击发送按钮时，它将信息提交给我

这是问题，我的代码在本地服务器上运行正常。但它不运行 在实时服务器（Godaddy 服务器）上它给出异常

这是代码：

Imports System.IO
Imports System.Net.Mail
Partial Class Contact_Form_Demo
Inherits System.Web.UI.UserControl

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim fileName As String = Server.MapPath("~/App_Data/ContactForm.txt")
    Dim mailBody As String = File.ReadAllText(fileName)

    mailBody = mailBody.Replace("##Name##", TextBox1.Text)
    mailBody = mailBody.Replace("##Email##", TextBox2.Text)
    mailBody = mailBody.Replace("##HomePhone##", TextBox3.Text)
    mailBody = mailBody.Replace("##BusinessPhone##", TextBox4.Text)
    mailBody = mailBody.Replace("##Comments##", TextBox5.Text)

    Dim mymessage As MailMessage = New MailMessage()
    mymessage.Subject = "Response from web site"
    mymessage.Body = mailBody

    mymessage.From = New MailAddress("Email Here", "Tuhin Bhatt")
    mymessage.To.Add(New MailAddress("My Email Here", "Tuhin Bhatt"))

    Dim mysmtpclient As SmtpClient = New SmtpClient()
    mysmtpclient.Send(mymessage)
End Sub
End Class

这是我在实时服务器上收到的错误：

Server Error in '/' Application.
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.95.109:25
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.95.109:25
Source Error:  
Line 26:  
Line 27:         Dim mysmtpclient As SmtpClient = New SmtpClient()  
Line 28:         mysmtpclient.Send(mymessage)  
Line 29:     End Sub  
Line 30: End Class

Answer 1

您的托管环境不允许您使用 Web.config 中指定的设置访问 SMTP 服务器。如果您的 web.config 文件中没有 部分，则意味着您的应用程序正在尝试访问 GoDaddy 的 machine.config 文件指定的设置。而且很可能，您无权访问该特定服务器和端口。

请在此处查看如何设置邮件设置部分。并使用您正在管理的网站的 SMTP 服务器的名称和密码。

Answer 2

Dim mysmtpclient As SmtpClient = New SmtpClient() 

除非您出于隐私原因省略它，否则您的 SmtpClinet() 会丢失一些参数，即邮件服务器和端口。