dovecot - Jun 2013 - Support not compiled in for passdb driver 'pam' + telnet localhost imap.

Hi!,

I Install dovecot version 2.1.16 on CentOS 6.4 x86_64.
When I try to test the installation (by telnet localhost imap) the
following error occurs: "auth: Fatal: Support not compiled in for passdb
driver 'pam'".
I do not discover what caused this.
Here I leave the configuration data and the log.
Thanks

------------------------------------ / var / log / maillog
---------------------------------------
May 31 15:45:55 prueba-mail dovecot: master: Dovecot v2.1.16 starting up
(core dumps disabled)
May 31 15:46:04 prueba-mail dovecot: auth: Fatal: Support not compiled in
for passdb driver 'pam'
May 31 15:46:04 prueba-mail dovecot: master: Error: service(auth): command
startup failed, throttling for 2 secs
May 31 15:46:04 prueba-mail dovecot: imap-login: Disconnected: Auth process
broken (disconnected before greeting, waited 0 secs): user=<>, rip=::1,
lip=::1, secured, session=<jabyBgjevAAAAAAAAAAAAAAAAAAAAAAB>


------------------------------------ doveconf-n
--------------------------------------------------
# 2.1.16: /usr/local/etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-358.6.2.el6.x86_64 x86_64 CentOS release 6.4 (Final)

auth_use_winbind = yes

namespace inbox {
  inbox = yes
  location   mailbox Drafts {
          special_use = \Drafts
}

mailbox Junk {
    special_use = \Junk
}

mailbox Sent {
    special_use = \Sent
}

mailbox "Sent Messages" {
    special_use = \Sent
}

mailbox Trash {
    special_use = \Trash
}

passdb {
  driver = pam
}

protocols = imap pop3
ssl = no

userdb {
  args = uid=10000 gid=10000 home=/mail/%d/%n allow_all_users=yes
  driver = static
}


-- 
Maria Jos?