Defer email via LMTP when there is 'no space left on device' instead of rejecting it

[Jiri Bourek]

On 12.8.2014 13:04, Jochen Bern wrote:
> On -10.01.-28163 20:59, Jiri Bourek wrote:
>> On 10.8.2014 06:18, Will Yardley wrote:
>>> Depends on the environment; in many cases, the admin could, or may even
>>> be expected to, raise the quota.
>>
>> If you're expected to raise the quota in case it's exceeded, don't set
>> it in the first place, there is no point to it. Or - if you really want
>> that exercise in futility - use quota_warning and raise it automatically.
>
> Where exactly did you read "automatically"?
>
> Users need reminders not to be disk hogs. Managers want to be asked
> before company resources get allocated. Sysadmins may want to verify
> that it's actually the *user* using the disk space and not some software
> or e-mail problem. Quotas and their getting exceeded provide a hook for
> all these (non computer-only) procedures, even if the quota eventually
> *does* get raised for all cases of proper need.

You can do all of those things as a reaction to quota_warning e-mail 
sent to you _before_ the account exceeds its quota. No need to hit the 
error path by actually exceeding the quota.