2 Sep
2010
2 Sep
'10
8:32 p.m.
On Thu, 2010-09-02 at 19:14 +0200, Luca Palazzo wrote:
Looking at mbox servers log nothing seem to happen, but stracing lmtp process we can see stat system calls to all Maildir files, as if dovecot was recalculating quota and regenerating maildirsize file.
It happens always when LMTP tries to deliver a mail to an overquota account.
Yes, that's pretty much how Maildir++ quota works. If maildirsize file doesn't only contain a single line showing the quota, or if it's older than 15 minutes, it's recalculated. The maildir filenames really should have ,S=size in the filenames, otherwise quota recalculation is horribly slow.
Maybe you should switch to dict quota with file backend. http://wiki2.dovecot.org/Quota/Dict