Am 2014-04-23 13:39, schrieb Erik Logtenberg:
Hi,

If I request a (success) DSN from my Postfix server, my server responds as expected. Usually my mail server has to deliver the mail remotely and I would like Postfix to request a DSN from the remote server as well if
the user asked for one. Is that possible?

Kind regards,

Erik.

Do you mean,

- you are sending to a remote address or
- you are sending to a "local" address which is then forwarded to a remote address?

In the first case the request for a success DSN ist transmitted to the next MTA in case it offers DSN capability. If not, your Postfix generates a success DSN with action relayed.

In the second case it seems that Postfix strictly implements "the confidentiality of a forwarding address" without any user/administrator choice in opposit to what RFC 3464 says

   MTA authors are encouraged to provide a mechanism which enables the
   end user to preserve the confidentiality of a forwarding address.
   Depending on the degree of confidentiality required, and the nature
   of the environment to which a message were being forwarded, this
   might be accomplished by one or more of:

   ...

--
Michael

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