Restrict Control Messages
Control messages are sent to cancel a posting, create a new newsgroup, and remove a newsgroup. These messages are received by NNTP Service and posted to special newsgroups in the NNTP virtual server's Newsgroups listing. The control messages are posted to one of the appropriate newsgroups: control.cancel, control.newgroup, and control.rmgroup. If you do not want users performing the administrative tasks the control messages contain, you can restrict access to newsgroups in which control messages are posted.
Important If the Allow control messages check box is selected on the virtual server's Settings tab, you can restrict access to control messages. If this option is not selected, all control messages for the newsgroup are processed the same way as regular article postings.
You can restrict access to control messages in three ways:
Related TopicsSet Posting Limits