the solution is very simple :
Restart proftpd after the setup script and Work fine
...
the setup sript does not stop and start services ?[hr]
DOVECOT :
dovecot don't work
/etc/init.d/dovecot restart
Restarting IMAP/POP3 mail server: dovecotLast died with error (see error log for more information): Auth process died too early - shutting down
If you have trouble with authentication failures,
enable auth_debug setting. See http://wiki.dovecot.org/WhyDoesItNotWork
This message goes away after the first successful login.
Sep 28 18:37:02 vm4 dovecot: dovecot: Killed with signal 15 (by pid=7023 uid=0 code=kill)
Sep 28 18:37:02 vm4 dovecot: Dovecot v1.2.15 starting up (core dumps disabled)
Sep 28 18:37:02 vm4 dovecot: auth(default): Fatal: mysql: Missing value in connect string: default_pass_scheme
Sep 28 18:37:02 vm4 dovecot: dovecot: Fatal: Auth process died too early - shutting down
Sep 28 18:37:11 vm4 dovecot: Dovecot v1.2.15 starting up (core dumps disabled)
Sep 28 18:37:11 vm4 dovecot: auth(default): Fatal: mysql: Missing value in connect string: default_pass_scheme
Sep 28 18:37:11 vm4 dovecot: dovecot: Fatal: Auth process died too early - shutting down
i test login to pma with dovecot_user and work (password to /etc/dovecot/dovecot-dict-sql.conf is OK)