When I install sympa, it fails adding this user. Here are the messages :
Setting up sympa (4.1.5-2) ...
Adding system group: sympa.
addgroup: Please enter a username matching the regular expression
configured
via the name_regex configuration variable. Use the `--force-badname'
option to relax this check or reconfigure name_regex.
Adding system user: sympa.
adduser: Warning: The home dir you specified already exists.
adduser: Please enter a username matching the regular expression
configured
via the name_regex configuration variable. Use the `--force-badname'
option to relax this check or reconfigure name_regex.
usermod: user sympa does not exist
usermod: user sympa does not exist
usermod: user sympa does not exist
usermod: user sympa does not exist