Russell Jones:
> Hi Wietse,
>
> Thanks! That's different from what I read in that article then...
> according to that article the remote mail server needs to support DSN as
> well for the reports to be generated.
Per RFC 3461..3464, Postfix sends DSN "relayed" (not success) if
the remote server does not announce DSN support. The RFCs are
public documents, so you don't have to take my word for it.
If the remote server announces DSN support, and you receive no
"success" or "relayed" notification, then some remote system does
not implement DSN correctly.
Debugging remote SMTP servers is outside the scope of Postfix
support.
Wietse
