故障排除"邮箱不可用.服务器响应是:访问被拒绝-无效的HELO名称.使用SmtpClient发送电子邮件时 [英] Troubleshooting "Mailbox unavailable. The server response was: Access denied - Invalid HELO name" when sending email with SmtpClient
问题描述
我一直在尝试通过C#发送电子邮件.我在Google上搜索了各种示例，并从每个人和每个人都可能会使用的标准代码中获取了点滴.
I have been trying to send an email by C#. I have Googled for various examples and have taken bits and pieces from each and from the standard code which everyone would most probably be using.
string to = "receiver@domain.com";
string from = "sender@domain.com";
string subject = "Hello World!";
string body = "Hello Body!";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient("smtp.domain.com");
client.Credentials = new NetworkCredential("test@domain.com", "password");
client.Send(message);
但是，我不断收到错误提示
However, I keep getting an error stating
System.Net.Mail.SmtpException:邮箱不可用.服务器响应为:拒绝访问-无效的HELO名称(请参阅RFC2821 4.1.1.1)
System.Net.Mail.SmtpException: Mailbox unavailable. The server response was: Access denied - Invalid HELO name (See RFC2821 4.1.1.1)
那么，我现在该怎么办?SmtpClient是否应该是特殊的，并且只能在特定的SMTP服务器上使用?
So, what do I do now? Is SmtpClient supposed to be special and only work on specific SMTP servers?
推荐答案
看来您的用户名/密码对未通过SMTP服务器成功认证.
我认为，我发现这里有问题.我已经在下面更正了您的版本.
I think, I found what's wrong here. I have corrected your version below.
string to = "receiver@domain.com";
//It seems, your mail server demands to use the same email-id in SENDER as with which you're authenticating.
//string from = "sender@domain.com";
string from = "test@domain.com";
string subject = "Hello World!";
string body = "Hello Body!";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient("smtp.domain.com");
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential("test@domain.com", "password");
client.Send(message);
这篇关于故障排除"邮箱不可用.服务器响应是:访问被拒绝-无效的HELO名称.使用SmtpClient发送电子邮件时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！
