[Dovecot] maildir quota divergence

[Juan Carlos Sanchez]

Hello;

We are using maildir quotas and have found differences in many users in 
respect to what system command are showing and doveadm quotas.

For example, four user test, we have:

doveadm quota get -u test
Quota name Type    Value 
Limit                                                        %
           STORAGE 98066 
102400                                                       95
           MESSAGE   883 
-                                                        0

But if we check user mail_location with "du" system command we get he is 
using 70458 Kb.

We are running dovecot 2.1.17

¿any clue?

Thanks in advance.