SmtpClient.Send不适用于Linux环境

以下代码在.net core 2环境中编写，适用于the windows environment，但不适用于the linux environment。SmtpClient.Send不适用于Linux环境

string host = "10.99.99.10"; 
int port = 25; 
string userName = "[email protected]"; 
string password = "password"; 
string from = userName; 

var client = new SmtpClient 
{ 
    Host = host, 
    Port = port, 
    EnableSsl = false, 
    DeliveryMethod = SmtpDeliveryMethod.Network, 
    UseDefaultCredentials = false, 
    Credentials = new NetworkCredential(userName, password) 
}; 

MailMessage mailMessage = new MailMessage(); 
mailMessage.From = new MailAddress(from); 
mailMessage.To.Add(userName); 
mailMessage.Body = "This is test mail."; 
mailMessage.Subject = "Testing";     
client.Send(mailMessage);

例外：Failure sending mail.

InnerExcepiton：

System.ComponentModel.Win32Exception (0x80004005): GSSAPI operation failed with error - An invalid status code was supplied (Unknown error). 
    at System.Net.Security.NegotiateStreamPal.AcquireCredentialsHandle(String package, Boolean isServer, NetworkCredential credential) 
    at System.Net.NTAuthentication.Initialize(Boolean isServer, String package, NetworkCredential credential, String spn, ContextFlagsPal requestedContextFlags, ChannelBinding channelBinding) 
    at System.Net.Mail.SmtpNtlmAuthenticationModule.Authenticate(String challenge, NetworkCredential credential, Object sessionCookie, String spn, ChannelBinding channelBindingToken) 
    at System.Net.Mail.SmtpConnection.SetContextAndTryAuthenticate(ISmtpAuthenticationModule module, NetworkCredential credential, ContextAwareResult context) 
    at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) 
    at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) 
    at System.Net.Mail.SmtpClient.GetConnection() 
    at System.Net.Mail.SmtpClient.Send(MailMessage message)

堆栈跟踪：

at System.Net.Mail.SmtpClient.Send(MailMessage message) 
    at MyProject.Helper.Utils.SendMail() in C:\Test\MyProject\MyProject.Helper\Utils.cs:line 146

Linux操作系统：Ubuntu 16.04.3 LTS

这是一个控制台应用程序。为什么不在linux环境下工作？

来源

2017-10-09 Cer

您的SMTP服务器可能需要验证。尝试'telnet 10.99.99.10 25'并尝试使用SMTP命令发送测试电子邮件。 http://www.samlogic.net/articles/smtp-commands-reference.htm –

@SameerNaik Telnet正在工作（10.99.99.10 25） – Cer

0x80004005错误代码的原因似乎是一个损坏的安装。我会尝试重新安装.net核心。 https://support.microsoft.com/en-gb/help/914232/you-may-receive-error-code-0x80004005-or-other-error-codes-when-you-tr –

我以为这是一个代码错误，因为我有错误，但事实并非如此。当我在邮件服务器端给relay authority解决问题时。我认为这是在Windows环境中自动执行此操作。

来源

2017-10-27 05:14:25 Cer

邮件服务器上的中继权限究竟是什么？ –

SmtpClient.Send不适用于Linux环境

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