信箱不可用。服务器响应是：拒绝访问 - 无效的HELO名称（请参阅RFC2821 4.1.1.1） [英] Mailbox unavailable. The server response was: Access denied - Invalid HELO name (See RFC2821 4.1.1.1)

问题描述

背景：

我有一个托管服务器的网站（asp.net/c#），网站也在我的本地电脑上。

In我的网站我有一个用于发送电子邮件的表单。当我在我的本地电脑上并使用该表格发送电子邮件时，它100％工作，但当在服务器上并使用该表格时，我收到错误：

邮箱不可用。服务器响应是：访问被拒绝 - 无效的HELO名称（参见RFC2821 4.1.1.1）



我用来发送电子邮件的代码如下

Background:
I have a website(asp.net/c#) that is hosted on a server, the website is also still on my local pc.
In my website i have a form that is used to send emails. When on my local pc and using that form to send emails it works 100% but when on the server and using that form i get the error:
Mailbox unavailable. The server response was: Access denied - Invalid HELO name (See RFC2821 4.1.1.1)

The code i use to send the email is as follows

String PasswordOfEmailAddress   = "xxx";
String Host                     = "host.com"; 


String sendFrom = "[e-mail]";
String sendTo = txtEmailAdress.Text;
String sendSubject = txtSubject.Text;
String body = txtBody.Text;

String sendMessage = body;
            
NetworkCredential emailUserPassw = new NetworkCredential(sendFrom, PasswordOfEmailAddress);
SmtpClient SendingEmail = new SmtpClient(Host);

SendingEmail.EnableSsl = true;
SendingEmail.Credentials = emailUserPassw;
SendingEmail.Send(message);            

首先，我甚至不知道错误意味着什么，其次我不知道从哪里开始修复它

有人告诉我添加UserDefaultCedential = false

这给了我一个错误...服务器不支持sercure连接



如果有人可以提供帮助我会很感激

First of all, i dont even know what the error means and second i have no idea where to start by fixing it
Someone told me to add UserDefaultCedential = false
That gave me an error of ... Server does not support sercure connections

If Anyone can help i will appreciate it

推荐答案

这篇关于信箱不可用。服务器响应是：拒绝访问 - 无效的HELO名称（请参阅RFC2821 4.1.1.1）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！