We have NetWare 6.5 as the file server and the users are using Client 4.9

We have the practice to disable the NetWare server broadcast to prevent
any unnecessary broadcast. Recently we have issue a command to send a
broadcast message to user without turning on the server broadcast. They
are not receiving any broadcast message at this moment. However, we have a
second message to send out two hours later and we did enable the server
broadcast. Users received two messages now......

May i know how can i discard the first message so that it wouldn't
broadcast to user when we enable the server broadcast? So that users will
not receive the first message.

Please advise. Thank you.

Best rgds