[Dovecot] deliver rejection message

[Steffen Kaiser]

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On Thu, 24 May 2007, Antonio Casado Rodríguez wrote:

> Another possibility is to give two answers: one in English and another
> one in the default language of server. Example:
> Cuota de espacio excedida / Quota exceeded.

It should still be automatically parsable. I really hate localized 
Exchange, it's DSNs are very unhelpful, sometimes it's even hard to tell 
which recipient failed.

Exim, for example, makes it nice:
======================

This message was created automatically by mail delivery software (Exim).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

    ska22222 at mail
      SMTP error from remote mailer after RCPT TO:<ska22222 at mail>:
      host ux-2s11z.inf.fh-bonn-rhein-sieg.de [10.20.1.10]:
      550 5.1.1 <ska22222 at mail>... User unknown

=======================

That's the start of the DSN in text/plain.

The paragraphes are indented by recipient and broken to fit into the RFC 
72 columns.
Moreover, you have the SMTP error code and a human readable reason.

Bye,

- -- 
Steffen Kaiser
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