On Mon, 24 Feb 1992, Tom Cervenka <CTCT100@UICVMC> wrote: > I want to restrict certain non-RFC compliant or otherwise chatty mail > systems from bouncing mail to my list. If I add a subscription for the system > and set its options to NOMAIL, will this prevent LISTSERV from accepting > posts from the mail system? > No. It will only prevent LISTSERV from sending a copy of a posting to that ID. What the LISTSERV-manager(!) at a node can do is issue: ! SERVE user OFF Permanently suspend access from ! an abusive user or gateway ! (restore with 'SERVE user') ! Any non-privileged user can "undo" this (if they know it exists) by issuing: ! SERVE userid@node ! ! Returns service to a disabled user. To prevent loops and 'message wars' ! to occur, LISTSERV will automatically "disable" a user after receiving ! 10 invalid commands from him. Further commands will be completely ignored ! without any error message being sent back, until service is restored ! from another userid/account by means of the SERVE command. !