[netatalk-admins] how to send messages to netatalk clients

[Claudia M�ller]

is there any possibility to send messages to users, who work via
netatalk on the linux machine? It would be helpfull to inform people
befor I shut down the service.
I know that with kill -HUP afpd users will be informed, that the
services will shut down in 5 Minutes. But is there a way to send
messages without killing afpd?

Claudia M�ller