Philipp,
send the command
HELP
in a single-line e-mail message to the [log in to unmask]
.
This will get you a help file about the listserv oprions. You can set some
option to receive a copy of your own message from the listserv, by default
this option is turned off. You can also choose to get a send report (saying:
Your message was distributed to *** people).
Yours, J"org Knappen
P.S. Didn't you save the wellcome message from the Listserver when you
subscribed? It tells you about this.