Title: Control message
Content: news servers stopped implementing sendsys long before it was declared obsolete by RFC 5537. Messages of type newgroup and rmgroup are ignored unless there is an "Approved" line in the same message header. Newsservers traditionally allow only selected users to send articles with these lines. As long as there were only a handful of Usenet sites this provided sufficient protection against abuse. The format of "Arpa Internet Text Messages" is the common base for Usenet and E-mail. The format provides no means of authentication. Various extensions adding a digital signature were developed to prevent forgeries. For control message a special

Title: Control message
Content: respective public key is known to every news server. Cancel-lock is much simpler, but neither commonly accepted, nor implemented in popular news servers and newsreaders. Control messages are typically not shown in the target Newsgroup. Instead many servers put them into pseudo newsgroups like codice_4. Google Groups provides no means to read or write control messages. It does not even execute cancels. The Internet Systems Consortium archives newgroup and rmgroup together as a single file per group and checkgroups as one file per year. Control message Control messages are a special kind of Usenet post that are used to control

Title: Usenet
Content: interfaces for one reason or another. Google Groups is one such web based front end and some web browsers can access Google Groups via news: protocol links directly. A minority of newsgroups are moderated, meaning that messages submitted by readers are not distributed directly to Usenet, but instead are emailed to the moderators of the newsgroup for approval. The moderator is to receive submitted articles, review them, and inject approved articles so that they can be properly propagated worldwide. Articles approved by a moderator must bear the Approved: header line. Moderators ensure that the messages that readers see in the

Title: Usenet newsgroup
Content: overall amount of network traffic and resource usage. Typically, the newsgroup is focused on a particular topic of interest. A message sent for publication on a newsgroup is called a "post". Some newsgroups allow posts on a wide variety of themes, regarding anything a member chooses to discuss as on-topic, while others keep more strictly to their particular subject, frowning on off-topic posts. The news admin (the administrator of a news server) decides how long posts are kept on their server before being expired (deleted). Different servers will have different retention times for the same newsgroup; some may keep posts

Title: Yahoo! Groups
Content: Yahoo! Groups Yahoo! Groups is one of the world's largest collections of online discussion boards. The term Groups refers to Internet communication which is a hybrid between an electronic mailing list and a threaded Internet forum, in other words, Group messages can be read and posted by e-mail or on the Group's webpage like a web forum. In addition, members can choose whether to receive individual, daily digest or Special Delivery e-mails, or simply read Group posts on the Group's Web site. Groups can be created with public or member-only access. Some Groups are simply announcement bulletin boards, to which

Question: What is a message sent to a newsgroup in the Internet called?|
Answer: Article