[Dovecot] Vpopmail authentication problem

Hello,

I have a problem setting dovecot-1.0 / vpopmail authentication with virtual users.

Here is my dovecot.conf (the part related to vpopmail) :

passdb = vpopmail userdb = vpopmail default_mail_env = maildir:/home/domains/%d/users/%n

I recompiled dovecot with "verbose" option and keep getting this error :

Nov 3 11:10:58 ***** dovecot: auth(default): vpopmail(lb@mm.fr): unknown user (lb@mm.fr)

whatever user/domain/password I am testing (including the correct one, of course)

This is in src/auth/userdb-vpopmail.c line 35 :

     vpw = vauth_getpw(vpop_user, vpop_domain);

According to the makefile, the binary was built with -L/home/vpopmail/lib and -I/home/vpopmail/include options ("standard" qmail/vmailmgr/vpopmail installation) so it should be ok ?

I checked the permissions by setting a shell for vpopmail user, then 'su vpopmail' and read/write the password.cdb file.

What could be wrong ?

Has anybody got a sample config file / dovecot version working with vpopmail and virtual users, or an idea of what could be wrong in my config ?

Thanks a lot.

Laurent