我有一个简单的邮件实用程序,它应该通过 Exchange 2007 服务器(安装在 Windows Server 2008 R2 64 位上)发送电子邮件,但它不起作用,在命令行中给出以下错误消息:“邮箱不可用. 服务器响应为:5.7.1 无法中继”。我被告知我需要对服务器进行身份验证,但显然我没有正确执行。有什么建议么?我的代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Mail;
namespace SendMail
{
class Program
{
static void Main(string[] args)
{
SmtpClient smtpClient = new SmtpClient("x.x.x.x", 25);
NetworkCredential basicCredential = new NetworkCredential("username", "password", "domain");
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress("user@domain.com");
smtpClient.Host = "x.x.x.x";
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
message.From = fromAddress;
message.Subject = "test message";
message.Body = "test message";
message.To.Add("user@domain.com");
try
{
smtpClient.Send(message);
Console.WriteLine("Message sent successfully");
}
catch (Exception ex)
{
//Error, could not send the message
Console.WriteLine(ex.Message);
}
}
}
}