[Dovecot] pam authentication error

Hi all,

I compiled Dovecot 1.2.16 (on Debian 5/lenny) and followed the quick configuration guide (wiki.dovecot.org/QuickConfiguration). I just need plaintext authentication. After starting Dovecot I get "Last died with error" and in var/log/mail.err: Nov 23 15:06:55 debian dovecot: auth(default): Fatal: Support not compiled in for passdb driver 'pam' Nov 23 15:06:55 debian dovecot: dovecot: Fatal: Auth process died too early - shutting down

In /etc/pam.d/dovecot: auth required pam_unix.so account required pam_unix.so

In /usr/local/etc/dovecot.conf: passdb pam { args = * }

So, what may be wrong with my configuration? Oliver