XPost: alt.comp.software.thunderbird, news.software.readers   
   From: nospam@needed.invalid   
      
   On Tue, 1/20/2026 12:01 AM, Cheep Cheep... wrote:   
      
      
   > It is definitely Thunderbird doing it.  A brand new install on a brand new   
   VM will exhibit the exact same behavior.    
   > It does not occur on any other news software.   
      
   The server and the server administrator control crossposting.   
   Using CleanFeed and SpamAssassin, they can also add arbitrary   
   rules concerning content. (The original CleanFeed had a   
   rule to block Nike running shoe adverts :-) As a demo filter.)   
      
   Some of the servers had additional filtering added, when   
   the ThaiSpam event occurred. That was a flood attack on   
   select groups. That's the event that caused Google to shut   
   down the NNTP interface to groups.google.com . It caused   
   one other free server to go "Read Only". The server administrator   
   sets it to ReadOnly, Thunderbird does not do that.   
      
   You can set up a test server, an INND, and do some better   
   quality controlled testing. When you first start running   
   the server, it has very few crosspost rules. The server   
   might be limited to crosspost of twelve by default, and   
   that's a global rule for all groups.   
      
   That's the kind of control you need over the materials,   
   to be making claims of "this and that". Nobody here believes   
   you, because we know how it works.   
      
   The USENET clients have a really easy job. The user types   
   shit in the window, the USENET client copies that into   
   a block of text and sends it. The server decides to accept   
   it, or reject it (along with a numeric error code). You can   
   study this, by setting your clients for Port 119 and using   
   Wireshark to record the (plaintext) packets.   
      
   To prove the honesty of the client, use Wireshark. Wireshark   
   will record the Newsgroups: line being sent off in your posting.   
   This *proves* that Thunderbird did not modify the group list.   
   It is right in the Wireshark trace.  Right after this is sent,   
   the server can send "123 Excessive Crosspost" back to you, and that   
   is the server doing the parsing and analysis regarding the   
   server-enforced crosspost rule. Each group can have a custom   
   rule regarding when to reject a message. And by using Port 119,   
   this is available for you to read, in (relatively) plain English.   
      
     Newsgroups: alt.comp.software.thunderbird,news.software.reader   
   ,alt.comp.os.windows-11   
      
   More info about Wireshark, here.   
      
     https://en.wikipedia.org/wiki/Wireshark   
      
       Paul   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)