使用smtp将电子邮件从假Emal或某些电子邮件发送到另一个电子邮件而无需身份验证

时间:2019-05-22 15:33:50

标签: c# smtp

我想将带有smtp的电子邮件发送到某些未经身份验证的电子邮件,但出现异常。

这是我的代码:

MailMessage mail = new MailMessage();
mail.To.Add("myEmail@gmail");
mail.From = new MailAddress("SomeEmail@test.com");
mail.Subject = "test subject";
mail.IsBodyHtml = true;
mail.Body = "test body";

SmtpClient SmtpServer = new SmtpClient();
SmtpServer.Host = "smtpserver";
SmtpServer.Port = 25;
SmtpServer.DeliveryMethod=System.Net.Mail.SmtpDeliveryMethod.Network;

try
{
    SmtpServer.Send(mail);
}
catch (Exception ex)
{
    Console.WriteLine("Exception Message: " + ex.Message);

    if (ex.InnerException != null)
        Console.WriteLine("Exception Inner:"+ex.InnerException);
}

这是我的app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
    </startup>
    <system.net>
      <mailSettings>
        <smtp deliveryMethod="Network">
          <network
            clientDomain="www.contoso.com"
            defaultCredentials="false"
            enableSsl="false"
            host="mail.contoso.com"
            port="25"
        />
        </smtp>
      </mailSettings>
    </system.net>
</configuration>

我尝试将defaultCredentials设置为true,但这也不起作用-请帮助我。

这是我得到的例外:

  

异常消息:发送邮件失败。

     

内部异常:
  System.Net.WebException:无法解析远程名称:'smtpserver'

     

at System.Net.ServicePoint.GetConnection(PooledStream PooledStream,对象所有者,布尔异步,IPAddress&地址,Socket&abortSocket,Socket&abortSocket6)
  在System.Net.PooledStream.Activate(对象owningObject,布尔异步,GeneralAsyncDelegate asyncCallback)
  在System.Net.PooledStream.Activate(对象owningObject,GeneralAsyncDelegate asyncCallback)处
  在System.Net.ConnectionPool.GetConnection(Object owningObject,GeneralAsyncDelegate asyncCallback,Int32 creationTimeout)
  在System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint)>在System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint)
  在System.Net.Mail.SmtpClient.GetConnection()
  在System.Net.Mail.SmtpClient.Send(MailMessage消息)

0 个答案:

没有答案