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Re: A real bounce between GMX and bendel.debian.org

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On Sun 10 Oct 2021 at 22:07:28 -0300, Eduardo M KALINOWSKI wrote:

> On 10/10/2021 17:18, Thomas Schmitt wrote:
> > Hi,
> > 
> > although i seem not to be worth to be targeted by our bounce assassin,
> > my mail provider and bendel.debian.org are at odds enough to produce
> > a real bounce message, which then causes a warning mail from
> > listmaster@lists.debian.org .
> > 
> > I am trying to make sense out of the given bounce report
> > 
> >    https://lists.debian.org/bounces/79gUBBa56gHKY3wtHzNKdg
> > 
> > It is hard to distinguish the hearsay by bendel.debian.org from the
> > message parts which come from my provider's server mx00.emig.gmx.net.
> > Especially i wonder from where bendel takes the association to my
> > mail address (and which mentionings show its conclusions about my
> > address).
> > 
> > Whatever, the reason for the bounce is that GMX accuses debian-user
> > of not meeting its requirements
> >    https://www.gmx.net/mail/senderguidelines
> > All points there look like they are not volatile problems but rather
> > persistent ones. But listmaster@lists.debian.org wrote i had
> > >   1 bounce out of 68 mails in one day (1%, kick-score is 80%)
> > So why did the other 67 succeed ?
> 
> That seems unrelated to the OVH bounces.

Agreed.
 
> My mailserver bounced the same email (and I got a warning like that). Since
> I run my own mailserver, and can look at the logs and see exactly why it has
> been rejected, and here's what I got:
> 
> 2021-10-10 16:07:37 1mZeAb-0005Mc-Hn H=bendel.debian.org
> [2001:41b8:202:deb:216:36ff:fe40:4002]
> X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256 CV=no
> F=<bounce-debian-user=eduardo=kalinowski.com.br@lists.debian.org> rejected
> after DATA: header syntax (malformed address: >\n may not follow
> Pierre-Elliott =?utf-8?Q?B=C3=A9cue?= <peb@debian.org>: failing address in
> "From:" header is: Pierre-Elliott =?utf-8?Q?B=C3=A9cue?= <peb@debian.org>>):
> malformed address: >\n may not follow Pierre-Elliott =?utf-8?Q?B=C3=A9cue?=
> <peb@debian.org>: failing address in "From:" header is: Pierre-Elliott
> =?utf-8?Q?B=C3=A9cue?= <peb@debian.org>>

Confirmed.
 
> And this is From header:
> 
> From: Pierre-Elliott =?utf-8?Q?B=C3=A9cue?= <peb@debian.org>>
> 
> (There does seem to be an extra > in there.)

It is real enough and can be seen in the list archives at

  https://lists.debian.org/debian-user/2021/10/msg00429.html

The extra > is not evident at

  https://lists.debian.org/debian-devel-announce/2020/04/msg00015.html

It looks like Pierre-Elliott Bécue has some fixing to do. In case he has
ceased to follow this thread, there is a Cc to him.
 
> In this case, my server bounced a mail, and so the listserver is correct in
> sending me that notification. And since it was just one email, I did not get
> unsubscribed.
> 
> However, perhaps the listserver should have not accepted that email with the
> (possibly) invalid From header in the first place.

Postfix is used by bendel. I trust the RFC compliancy of Exim.

-- 
Brian.
> 
> 

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Thread

A real bounce between GMX and bendel.debian.org "Thomas Schmitt" <scdbackup@gmx.net> - 2021-10-10 22:20 +0200
  Re: A real bounce between GMX and bendel.debian.org "Thomas Schmitt" <scdbackup@gmx.net> - 2021-10-10 22:50 +0200
  Re: A real bounce between GMX and bendel.debian.org Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2021-10-11 03:10 +0200
    Re: A real bounce between GMX and bendel.debian.org "Thomas Schmitt" <scdbackup@gmx.net> - 2021-10-11 10:20 +0200
    Re: A real bounce between GMX and bendel.debian.org Brian <ad44@cityscape.co.uk> - 2021-10-11 14:00 +0200
    Re: A real bounce between GMX and bendel.debian.org Cord Beermann <cord@debian.org> - 2021-10-13 11:20 +0200
  Re: A real bounce between GMX and bendel.debian.org Joe <joe@jretrading.com> - 2021-10-11 09:50 +0200
  Re: A real bounce between GMX and bendel.debian.org Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-11 12:50 +0200

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