Dovecot unknow user

I have a probleme with my configuration of dovecot I think. I have no problem for send a email but I don't want receive a email. In my /var/log/mail.log I have :

Log dovecot

In my main.cf I have :

In dovecot.conf for auth default I have :

You want to help me ?

 

Which tutorial (URL) did you use to set up the system? Which distribution do you use?

 

Hi falko,

I have use many tuto so now it's very personnal configuration

I have a debian 5 lenny.

 

I have exécute différente change but I have a another error now :

mail.log -> local configuration error

you are a idea for debug this error ?

 

It's ok it was :

dovecot unix - n n - - pipe
flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -f ${sender} -d ${recipient}