http://www.gnu.org/software/mailman/mailman-install/postfix-integration.html
https://www.thomas-krenn.com/de/wiki/Mailman_unter_Debian_einrichten
https://www.thomas-krenn.com/de/wiki/Mailinglisten_unter_Mailman_erstellen

commands are in:
  /usr/lib/mailman/bin

to get password for admin:
  sudo ./newlist mailman

to remove a list use (after stopping mailman):
  sudo ./rmlist -a

change domain:
 withlist -l -r fix_url $listname -v

good faq: https://listserv.du.edu/faq.html