[Dovecot] Dovecot discards mail over quota

[Steffen Kaiser]

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On Tue, 20 Jan 2009, Markus Schönhaber wrote:

> Just as a side note (since Charles made his point very clear - to which
> I completely agree BTW):
> RFC 2821 is obsoleted by RFC 5321.

RFC5321 sec 4.2.4

the same wording about:

    o  if attempts to deliver the message fail due to permanent
       conditions, or if repeated attempts to deliver the message fail
       due to transient conditions, returning appropriate notification to
       the sender of the original message (using the address in the SMTP
       MAIL command).

RFC3461 sec 5.2.6 Failure of a conforming MTA to deliver a message
(referenced by both 2821 and 5321)

"
    (c)  If no NOTIFY parameter was supplied for the recipient, a
         "failed" DSN MUST be issued.
"

RFC3462 sec 1 (referenced by both 2821 and 5321)

"
    1) [Required] The first body part contains human readable message.
    The purpose of this message is to provide an easily understood
    description of the condition(s) that caused the report to be
    generated, for a human reader who may not have a user agent capable
    of interpreting the second section of the Multipart/Report.
"

And this sentence backs my argumentation, that a DSN should be in English 
(and probably in another second language), because an error message in 
human language XYZ only is not "easily understood". :)

Which comes down to Timo's original question, in order to remove the 
notification of Dovecot's deliver in favor of returning the proper exit 
code to let the MTA handles the stuff, seems to be good.

In order to handle Charles's idea, Dovecot deliver is to return "No error" 
and send no DSN in case of failure.

Bye,

- -- 
Steffen Kaiser
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