[Dovecot] lda logging directive does'nt work...

Hi all,

I'm using Postfix + Dovecot with system users (/etc/passwd and NIS) + deliver + cmusieve;

Here are some relevant lines in conf files :

/etc/postfix/main.cf

... mailbox_command = /usr/lib/dovecot/deliver ...

/etc/dovecot/dovecot.conf

... protocol lda { postmaster_address = postmaster@lri.fr mail_plugins = cmusieve deliver_log_format = msig=%m : Subject=%s : From=%f :%$ } ...

I just want deliver to log more than default format...like procmail... but nothing happens...the line 'deliver_log_format' seems to be ignored.

Any idea ?