Re: DSN behavior unclear - clarification needed

2019-01-15 Thread Stefan Bauer 
Awesome. Thank you. That did the trick.

Am Di., 15. Jan. 2019 um 13:22 Uhr schrieb Wietse Venema <
wie...@porcupine.org>:

> Stefan Bauer:
> > Hi,
> >
> > i would like that postfix always sends DSN, when requested by client and
> > mail got forwarded to next-hop / final destination.
>
> Postfix implements a published RFC, and according to that RFC,
> Postfix will send a 'relayed' DSN if:
>
> 1 - The sender requested DSN notification.
>
> And:
>
> 2 - The next-hop MTA does not announce DSN support, or you turn off
> DSN support (smtp_discard_ehlo_keywords = dsn, silent-discard).
>
> Additionally, you can tweak the SMTP conversation with
> smtpd_command_filter, smtp_reply_filter, and smtp_delivery_status_filter.
> There are examples in the documentation of those parameters.
>
> Wietse
>

Re: DSN behavior unclear - clarification needed

2019-01-15 Thread Wietse Venema 
Stefan Bauer:
> Hi,
> 
> i would like that postfix always sends DSN, when requested by client and
> mail got forwarded to next-hop / final destination.

Postfix implements a published RFC, and according to that RFC,
Postfix will send a 'relayed' DSN if:

1 - The sender requested DSN notification.

And:

2 - The next-hop MTA does not announce DSN support, or you turn off
DSN support (smtp_discard_ehlo_keywords = dsn, silent-discard).

Additionally, you can tweak the SMTP conversation with
smtpd_command_filter, smtp_reply_filter, and smtp_delivery_status_filter.
There are examples in the documentation of those parameters.

Wietse

DSN behavior unclear - clarification needed

2019-01-15 Thread Stefan Bauer 
Hi,

i would like that postfix always sends DSN, when requested by client and
mail got forwarded to next-hop / final destination.

Thats works on some recipients, but not on all. postfix always sends DSN on
specific destinations (e.g. web.de)

: delivery via mx-ha02.web.de[212.227.17.8]:25: 250 Requested
mail action okay, completed: id=1N0YD0-1hUYlq3qCq-00wNxk

But when mail is send to some other foreign postfix servers, the
foreign mailserver sends DSN.

How can we specifiy, that only "our" postfix server sends DSN. Reason
is, we have custom bounce messages and would

like to only present our users our custom DSN text.


Thank you.

Stefan