[Dovecot] about maildirsize not updating

[mastertoi...@netzero.net]

Hi. 
i am currently using roundcube my webmail and configure using dovecot quota 
plugins. but it seems to not be updating the maildirsize when new mails 
comes.Deleting the maildirsize will recreate the files correctly.Is there any 
solutions to this problem with dovecot.
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