[Dovecot] lda: internal error

[axel Egal]

Hi,
i'm trying to relay local post from Postfix to Dovecot-lda.
It's running on opensuse11.3-64bit with postfix V2.7.1 and dovecot V2.01.

sending local message like:

echo foo | /usr/sbin/sendmail -f root root
gets no logdata in dovecot.err, -.info,-.debug.
but the postfix-logfile tells:

Sep 11 10:56:12 server postfix/cleanup[3027]: 94027A65BC:
message-id=<20100911085612.94027A65BC at Server.Firma>
Sep 11 10:56:12 server postfix/qmgr[1544]: 94027A65BC:
from=<root at Server.Firma>, size=277, nrcpt=1 (queue active)
Sep 11 10:56:12 server postfix/local[3029]: 94027A65BC:
to=<root at Server.Firma>, orig_to=<root>, relay=local, delay=0.22,
delays=0.14/0.01/0/0.06, dsn=4.3.0, status=deferred (temporary failure.
Command output: lda: Error: user root: Error reading configuration:
net_connect_unix(/etc/dovecot/dovecot.conf) failed: Permission denied lda:
Fatal: Internal error occurred. Refer to server log for more information. )

There is no further loginfo in any other logfiles

Is the internal-error a result of wrong parameters?