[Dovecot] Dovecot - Issue with Maildir++ quotas

Andrew Richards ar-dovecot at nwdb.co.uk
Tue Aug 15 15:43:22 EEST 2006

On Tuesday 15 August 2006 13:28, Andrew Richards wrote:
> On Friday 11 August 2006 19:24, Andrew Richards wrote:
> > I've been bitten by an issue running Squirrelmail on top of
> > Dovecot using Maildir++ quotas.
> >
> > Having configured these quotas in Dovecot, I notice that Dovecot
> > appears not to exclude the 'Trash' folder from its quota
> > calculation (which it should do, according to the Maildir++
> > spec). Unfortunately this breaks Squirrelmail if I try to delete
> > a message from a close-to-quota mailbox - as per July's thread:
> >    "Maildir++ quota - how to handle a full mailbox"
> >
> > Which unfortunately means that a fairly full mailbox can become
> > 'Wedged' with Dovecot/Squirrelmail in this situation with its
> > owner unable to delete messages if that's the only way they
> > access their mailbox.
> >
> > I took a look at the source and found the 'Quota exceeded' lines
> > in src/plugins/quota/quota-storage.c but didn't understand it
> > well enough to dive in... except to notice that the 'Trash'
> > folder doesn't appear to get excluded from the calculations.
> To reply to my own query:
>  - I've mis-quoted the Maildir++ spec - the Maildir++ Trash folder
> is ".Trash", which differs from ".INBOX.Trash" - so the latter
> shouldn't necessarily be excluded from the quota calculation.
>  - I still wanted to get Squirrelmail working (with deleting mails
>    when near/at quota when using Maildir++ quotas), even to the
> extent that quotas might not be enforced during the
> Squirrelmail/IMAP session. Therefore I've dug into the source and
> worked out how to temporarily double the quota during the session
> (well I think that's the effect of my modification) - I've attached
> the relevant patch file for this should anyone else be struggling
> with the same problem - your mileage may vary. This at least gets
> Squirrelmail working.
> I think a good feature to avoid having to do a kludge like this
> would be to add an option to the quota section of dovecot.conf
> where the Trash folder could be specified as not counting towards
> the quota.

Doh, I've just found the following, I should have looked here first:


which is a much simpler approach to the same problem.



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