[AMaViS-user] "SUCCESSFULLY RELAYED" DSN problem

Hello folks

I have a following problem with an amavisd-new (2.5.2) + Postfix (2.3.8)
installation (Amavis set up as a content filter). When the sender
requests DSN (such as Microsoft Outlook can do when certain checkboxes
are ticked), Amavis sends reports like this:

Your message WAS SUCCESSFULLY RELAYED to:
<recipient@domain.com>
and you explicitly requested a delivery status notification on success.

This delivery report was generated by the program amavisd-new at host
blah.blah.com. Our internal reference code for your message is
27217-09/qpsSsHIz-vMO

The problem is, that this DSN is misleading, because it does not really
mean anything more than that the message passed the content filter
control. In fact the sender can still receive another delivery report
from Postfix stating that the message could not be delivered, especially
when receipient is external and the email was rejeted by the destination
server.

Should Amavis really send these 'SUCCESSFULLY RELAYED' notifications? I
searched the documentation and the source but I couldn't find any switch
to disable this. In fact from the following piece of Amavis's code:

$propagate_dsn_if_possible = 1; # pass on DSN if MTA announces this
# capability; useful to be turned off globally but enabled in
# MYNETS policy bank # to hide internal mail routing from outsiders
$terminate_dsn_on_notify_success = 0;
# when true=>handle DSN NOTIFY=SUCCESS
# locally, do not let NOTIFY=SUCCESS propagate to MTA (but allow
# other DSN options like NOTIFY=NEVER/FAILURE/DELAY, ORCPT, RET,
# and ENVID to propagate if possible)

i would rather expect that Amavis will pass on DSN NOTIFY=SUCCESS along
with the message and do nothing about it itself. I'm not an expert on
DSN's, so please forgive me if it does not make sense.

Is there a way to switch off these SUCCESSFULLY RELAYED notifications?

--
With best regards,
Szymon Juraszczyk


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