root@infomed:/etc/dovecot-ldap# dovecot -c /etc/dovecot-ldap/dovecot.conf -p /var/run/dovecot/dovecot-ldap.pid
Usage: dovecot [-F] [-c <config file>] [-p] [-n] [-a]
       [--exec-mail <protocol>] [--version] [--build-options]
Fatal: Unknown argument: -c