Warnings when closing in on quota?

M. J. [Mike] OBrien wrote:
>      Hi Tommi:
>      MUA solution. DBMail IMAPD supports RFC 2087 IMAP
quotas. A script 
> should not be hard to do but would be super expensive
on large systems 
> to maintain a real time polling of quotas. That's why
the protocol sets 
> out methods for doing this from the MUA so that it is
done per-user on 
> an as-needed query/response from the MUA to the server.

AFAIK dbmail doesn't really support quota (doesn't do any
calculations 
per box) but still reports the capability. Thunderbird shows
the quota 
when you take properties from you inbox (works with cyrus)
but when 
connecting to dbmail, it just says 'quota not supported'

>      In my experience, users usually know when they are
aproaching 
> excessive storage because for one thing, their account
is sluggish. When 
> Thunderbird has 17000 headers to display, the user
knows things are 
> getting FULL.. 

Yeah but my customers are not the sharpest knifes in the box
so a couple 
of times already they've run into their quota and then
wonder why 
they're not receiving any mail. Until their customer calls
them that the 
mail bounced with message 'your mailbox is full'

>      Perhaps you imagine something like GMAIL or
HOTMAIL's slide-bar 
> indicators of how much mail is in storage vs quota.
That would be a nice 
> desktop MUA feature. I have written proprietary front
ends (web mail) 
> and socially engineered communications systems which
have used a 'quota 
> report' just as does the Yahoo and Hotmail GUIs. I can
well see why it 
> is not a popular feature for mail clients.

Not really. I'm not such a huge fan of webmail. I do give it
out for 
those challenged people taking vacation in Bahamas and want
to check 
their mail from the nearest internet cafe...

>      DbMailAdministrator http://www.dbma.ca enables
Administrators to 
> spot over-quota users in a heartbeat and then send the
user a message or 
> freeze the account.

Is this a new feature?  I'm
running v2.3.3 on that server... should I 
read the docs?

-- 
br,
Tommi
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Tommi Lätti wrote:
> M. J. [Mike] OBrien wrote:
> 
>>      Hi Tommi:
>>      MUA solution. DBMail IMAPD supports RFC 2087
IMAP quotas. A
>> script should not be hard to do but would be super
expensive on large
>> systems to maintain a real time polling of quotas.
That's why the
>> protocol sets out methods for doing this from the
MUA so that it is
>> done per-user on an as-needed query/response from
the MUA to the server.
> 
> 
> AFAIK dbmail doesn't really support quota (doesn't do
any calculations
> per box) but still reports the capability. Thunderbird
shows the quota
> when you take properties from you inbox (works with
cyrus) but when
> connecting to dbmail, it just says 'quota not
supported'

I just tested by adding QUOTA to the CAPABILITY string in
imap4.h, and
now tb will happily show quota usage. Dbmail does not
support the
SETQUOTA command, but other than that quota support is
complete, albeit
limited to a single quotaroot "".

Adding SETQUOTA seems to me like a security problem: why use
quota when
users can override there own quota? Perhaps someone can tell
me how
cyrus does this.

-- 
 
____________________________________________________________
____
  Paul Stevens                                      paul at
nfg.nl
  NET FACILITIES GROUP                     GPG/PGP:
1024D/11F8CD31
  The Netherlands________________________________http://www.nfg.nl
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