Re: [courier-users] maildrop: Timeout quota exceeded

[Mike - s. <sil...@gm...>]

On Sun, Dec 11, 2016 at 6:35 PM, Sam Varshavchik <mr...@co...>
wrote:

> Mike - st257 writes:
>
> On Fri, Dec 9, 2016 at 12:51 PM, Gordon Messmer <<URL:mailto:
>> gor...@gm...>gor...@gm...> wrote:
>>
>>    On 12/09/2016 07:55 AM, Mike - st257 wrote:
>>    > I don't yet have an answer why that file was present (doesn't exist
>> in
>>    > my mailbox on that system), but moving it aside resolves the present
>>    > mail delivery problem.
>>
>>
>>    That file's presence indicates that a Maildir++ has a quota, and is
>> used
>>    to track the quota and usage.  Periodically, a maildir reader must
>> crawl
>>    the entire maildir to re-calculate usage, which could explain the
>>    timeout if an uncached read of all of the directories for that Maildir
>>    take a *really* long time.
>>
>>
>> (Agreed.)
>> The user's mailbox is large enough (my opinion, at a few Gigabytes) that
>> crawling the entire maildir will take an extremely long time.
>>
>
> You should look into exactly how messages get ultimately delivered to the
> maildir.
>
> Although maildrop may be used to filter/sort through incoming mail, it is
> possible that something else actually delivers the mail to the mailbox.
>
> maildrop creates that actual filenames for each message with the size of
> the message encoded into it. This will skip the stat call when scanning the
> mailbox.
>

postfix is configured to transport mail to maildrop (by either a postfix
transports file or a mysql lookup).


>
> This will also explain why the calculated quota is off.
>
> If you don't need mailbox quotas, you can simply get rid of the whole
> thing, as you did. But if you do install mailbox quotas, you need to use
> maildrop, or the deliverquota helper to deliver messages to a
> quota-enforced mailbox.
>

It's a nightmare to implement quotas with some of the mailboxes at this
stage (there are a few larger ones than just that user).

For the present (holidays and so forth) I'm content with the backlogged
mail delivery problem resolved for now.


Thanks for the help.

-- 
---~~.~~---
Mike
//  SilverTip257  //