[Dovecot] Enforcing Dovecot Quotas

[Leon Meßner]

On Wed, May 09, 2012 at 10:39:17PM +0100, Tim wrote:
> Thanks Leon
> 
> I changed my SQL to the following after trying a few combinations:
> 
> user_query = SELECT maildir, 5000 as uid, 5000 as
> gid,concat('maildir:bytes=',quota) as quota FROM virtual_mailbox WHERE
> username = '%u'

Try the above but with quota changed to quota_rule:

user_query = SELECT maildir, 5000 as uid, 5000 as
gid,maildir:bytes=1 as quota_rule FROM virtual_mailbox WHERE
username = '%u'

And also have at least something like

plugin {
quota = maildir:User quota
}

You could also do

plugin {
quota = maildir:User quota
quota_rule = *:storage=1
}

to have the quota_rule fixed in dovecot.conf and then only

user_query = SELECT maildir, 5000 as uid, 5000 as
gid FROM virtual_mailbox WHERE username = '%u'

as query.

I don't have my users in mysql though so other will probably have more
insights.

HTH,
Leon


> 
> It seems that Dovecot didn't understand the * backend for some reason
> (even though it's mentioned in the documentation)
> 
> and my logs now seem to picking up on this
> 
> May 09 22:29:09 IMAP(test at example.com): Info: Effective uid=mailuser,
> gid=mailgroup, home=(none)
> May 09 22:29:09 IMAP(test at example.com): Info: Quota root: name=bytes=1
> backend=maildir args=
> 
> But the address in question is still receiving mail - should I be doing
> something additional to cease mail delivery?
> 
> Thanks in advance!
> 
> Tim
> 
> On Tue, 2012-05-08 at 22:12 +0200, Leon Meßner wrote: 
> 
> > On Tue, May 08, 2012 at 01:59:38AM -0700, tcsmith1978 wrote:
> > > 
> > > Hello,
> > > 
> > > I have been looking at enforcing quotas for users of my mail system (postfix
> > > and Dovecot v1.2). Have tried to follow a few tuts on the web but its not
> > > having the desired effect. Essentially I can still send and receive mail on
> > > an account that I believe has had its quota exceeded.
> > > 
> > > In my main.cf, I have:
> > > 
> > > userdb sql {
> > >          args = /etc/dovecot/mysql/dovecot-mysql.conf
> > > }
> > > passdb sql {
> > >          args = /etc/dovecot/mysql/dovecot-mysql.conf
> > > }
> > > 
> > > and...
> > > 
> > > protocol lda {
> > >         mail_plugins = quota
> > > }
> > > 
> > > protocol imap {
> > >         mail_plugins = quota imap_quota
> > > }
> > > 
> > > plugin {
> > >         quota_exceeded_message = You have exceeded the maximum quota for
> > > your mailbox
> > > }
> > > 
> > > the dovecot sql (mysql) file has the following query for pulling out user
> > > ids and quotas etc:
> > > 
> > > user_query = SELECT maildir, mymailuser as uid, mymailgroup as
> > > gid,concat('maildir:storage=',quota) as quota FROM virtual_mailbox WHERE
> > > username = '%u'
> > > 
> > > I have set one of my users to have a quota of 1 (so one byte I believe) so
> > > it should be over the limit pretty much immedisoemately.
> > > 
> > > Looking at the logs I can see that the system is picking up on the quota
> > > limit but doesn't seem to enforce it.
> > > 
> > > Apr 27 10:29:02 deliver(test at testdomain.com): Info: auth input:
> > > quota=maildir:storage=1
> > > Apr 27 10:29:02 deliver(test at testdomain.com): Info: Quota root:
> > > name=storage=1 backend=maildir args=
> > > 
> > > Any ideas? Am i missing something?
> > 
> > i would try something like in the wiki:
> > plugin {
> > 	quota = maildir:User quota
> > 	quota_exceeded_message = You have exceeded
> > }
> > 
> > Never used mysql for userdb or passdb though. Perhaps this would work:
> > 
> > user_query = SELECT maildir, mymailuser as uid, mymailgroup as
> > gid,concat('*:storage=',quota) as quota_rule FROM virtual_mailbox
> > WHERE
> > username = '%u
> > 
> > 
> > > -- 
> > > View this message in context: http://old.nabble.com/Enforcing-Dovecot-Quotas-tp33763561p33763561.html
> > > Sent from the Dovecot mailing list archive at Nabble.com.
> > > 
> 
> 
> 
> -- 
> Tim <tcsmith1978 at googlemail.com>