[51120] in North American Network Operators' Group
Re: IETF SMTP Working Group Proposal at smtpng.org
daemon@ATHENA.MIT.EDU (Peter van Dijk)
Wed Aug 21 11:24:15 2002
Date: Wed, 21 Aug 2002 17:23:36 +0200
From: Peter van Dijk <peter@dataloss.nl>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <20020821105319.J3644@aol.net>
Errors-To: owner-nanog-outgoing@merit.edu
On Wed, Aug 21, 2002 at 10:53:19AM -0400, Ron da Silva wrote:
> > I'd like to be able to publish DNS records announcing my domain's *outbound*
> > mail servers, with nice abbreviated forms to say "they're the same as my
> > inbound (MX) records" or "any IP in x.y.z/24". Then cooperative ISPs (like say
> > America Online) could refuse any email from my domain that originated from some
> > random cable modem, instead of accepting it and then flooding me with 20000
> > bounce messages.
>
> What about this email from you which came to me from Merit and not your
> mail server? Would break mailing lists and listserves unless the from
> field is overwritten.
No, because a mailer doesn't look at headers - it looks at the SMTP
envelope, and mailinglists set this to point to an address of
themselves to monitor bounces.
Greetz, Peter
--
MegaBIT - open air networking event - http://www.megabit.nl/
