[opendmarc-users] decision-making by consensus: SMTP replies

[Andreas Schulze]

Am 12.01.2014 23:32 schrieb Andreas Schulze:
> I extended the RequiredHeaders feature to give more information
> about reject reasons.  (log and smtp reply text)
see http://www.trusteddomain.org/pipermail/opendmarc-dev/2014-January/000140.html

Hello List,

I like to discuss a specific topic on this patch.
It give the sender the detailed information what's wrong about an
rejected message.

consider a message with duplicate Reply-To header.
Without this patch there is only this information available:
  Jan 12 17:09:02 dmarc opendmarc[7682]: 3f2NBs3Hlkz259h: RFC5322 header requirement error

Patched the correct error is direct visible by the administrator checking his logs.
  Jan 13 02:08:16 dmarc opendmarc[9686]: 3f2c9m4TpSz259f: RFC5322 requirement error: more than one Reply-To: header

there are concerns about giving this information also the sender via SMTP reply text.
On one side the SMTP reply reveals what changes might get bogus mail through the filter.
On the other side there are operational benefits helping good actors (admins)
to identify problems.

One can imagine to let the milter admin decide the behaviour, give always information-less SMTP reply
or give always a meaningfull SMTP reply.

I'm asked to bring it up on this list to see what consensus is.

Thanks,
Andreas