The mailing list for listmasters using Sympa

[Andreas at WRI - List email <address@concealed>]

Dear all,
  I have a user on a private discussion list who sometimes/often posts
messages which are slightly "off topic". The list is unmoderated, but
subscription has to be approved.

I know that in mailman it is possible to set a certain user on
"moderated", if someone causes problems. Can this be done somehow in
sympa (sympa-5.2b)? I don't want to moderate the entire list, as this
would be too much work.

Thanks for help,
Andreas