I've been looking the last few days on how to use .NET to post messages to NNTP. My intentions are to create a NNTP posting plugin for NewsGator. My research today left me with a good tutorial and code (in C#) on how to communicate with a NNTP server...however, whenever I attempt to post to my NNTP server it errors with a "503 - Command Not Recognized" message. I'm just wondering if anyone has successfully been able to post items to a NNTP server with .NET, as well as, does anyone have any other good resources? I realize they're are a few 3rd party NNTP components out there (IP* Works and Active Up) but since this would be a plugin for NewsGator, I couldn't be able to utilize those. Any help would be appreciated.
Update: Randy (the author of the tutorial) just sent me some updated code. In the Post() code, you shouldn't append the newsgroup, but rather just send a "POST" message.