[Dovecot] deliver rejection bounces

[Giuliano Gavazzi]

You message was rejected by... no thank you, I do not want ever to see  
this:

On M 19 Jan, 2009, at 10:24 , Steffen Kaiser wrote:
> On Sun, 18 Jan 2009, Seth Mattinen wrote:
>
>> As a mail admin, I never want to see deliver generating its own  
>> messages to potentially forged addresses and spamming innocent  
>> people. The MTA should do this during the SMTP transaction.
>
> Which MTA tries to deliver the mail during the SMTP dialogue?
> Neither Postfix nor sendmail does, unfortunately. Well, one would  
> open yet another can of worms, if doing so, I guess.

he meant SMTP time reject, not bounces or NDR or whatever.
Giuliano