The Majordomo 1.93 config file adds:
# no_who [bool] (no) <majordomo>
# If set to yes, then the requestor must provide a password in
# order to use the who command.
no_who = yes
But I don't see any mention in the documentation of the syntax for giving
that password.. I'm sure it's something simple but the few things I
guessed didn't get me anywhere.
firstname.lastname@example.org email@example.com Freeside Communications 512-339-6094
(providing quality Internet access and services in beautiful Austin, Texas)