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%%