If you upgrade from <6.2, read
https://www.sympa.org/faq/upgrade-to-v6.2

Else upgrade with:
  run sympa.pl --upgrade

If this is your first installation of sympa, run
  create database with this schema:
    %%LOCALBASE%%/libexec/sympa/create_db.%%DB_TYPE%%
  run sympa_wizard.pl
  for wwsympa server, see samples configs in %%EXAMPLESDIR%%