[Dovecot/VirtualUsers/VirtualMailBoxes] No mails into mua

[aleskandro]

Hi all, I've configured postfix with multiple host and virtual mailboxes 
(main.cf is here: http://pastebin.com/798VVxbv). 

So I can receive email to vuser at mydomain.tld into 
/var/mail/vhosts/mydomain.tld/vuser file. Now I'm configuring dovecot 2.2.13-r1; 
this is my dovecot -n and /etc/dovecot/passwddir/mydomain.tld/passwd: 
http://pastebin.com/b4xcjj7t - 

The auth and server subscribe from a mua is ok and in the vuser file there are 
some mails but I can't see them in my mua. mail.log doesn't report any error.

Where I'm wrong?

Aleskandro