[Haskell-cafe] Missing messages in the ML

[Kim-Ee Yeoh]

Mailman still isn’t reflecting all mail. Just recently, this arrived in my
email:

https://mail.haskell.org/pipermail/haskell-cafe/2021-December/134940.html

But not the earlier two posts in the same thread:

https://mail.haskell.org/pipermail/haskell-cafe/2021-December/134938.html
https://mail.haskell.org/pipermail/haskell-cafe/2021-December/134939.html

What has changed in the email infrastructure recently?

On Mon, Nov 22, 2021 at 10:18 PM Gershom B <gershomb at gmail.com> wrote:

> Thanks! We're looking into this with our host.
>
> -g
>
> On Mon, Nov 22, 2021 at 3:34 AM Viktor Dukhovni <ietf-dane at dukhovni.org>
> wrote:
> >
> > On Mon, Nov 22, 2021 at 07:33:43AM +0000, Tom Smeding wrote:
> >
> > > I got at least one message from Tom Ellis in the Logging conversation,
> > > one from Joachim Durchholz, and some more. I'm definitely not included
> > > in the conversation personnally.
> > >
> > > I have no idea what might be going wrong, but I think it's not
> > > forgetting to reply to all.
> >
> > [ TL;DR haskell.org DNS is misconfigured ]
> >
> > I guess I can put my SMTP/DNS guru hat on and explain what is happening.
> > Here's some (cryptic) data from my logs:
> >
> >     Nov 22 01:42:13 straasha postfix/smtpd[52426]:
> >         disconnect from unknown[145.40.99.54]
> >         ehlo=2 starttls=1 mail=1
> > -->     rcpt=0/1 data=0/1 rset=1 quit=1 commands=6/8
> >
> >     Nov 22 02:19:13 straasha postfix/smtpd[52686]:
> >         disconnect from unknown[2604:1380:4641:a100::5]
> >         ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
> >
> >     Nov 22 02:35:10 straasha postfix/smtpd[53049]:
> >         disconnect from unknown[2604:1380:4641:a100::5]
> >         ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
> >
> >     Nov 22 02:42:51 straasha postfix/smtpd[53100]:
> >         disconnect from unknown[145.40.99.54]
> >         ehlo=2 starttls=1 mail=1
> > -->     rcpt=0/1 data=0/1 rset=1 quit=1 commands=6/8
> >
> > The first and last message were rejected: "rcpt=0/1, data=0/1" mean that
> > "RCPT TO" and "DATA" commands were refused.  The middle two messages
> > were accepted.
> >
> > The reason is DNS misconfiguration of the of mta1.haskell.org:
> >
> >     $ set -- mta1.haskell.org misc-services-origin-migration.haskell.org
> >     $ brief() { dig +noall +ans +nocl +nottl "$@"; }
> >     $ echo; for fwd; do brief -t a $fwd; brief -t aaaa $fwd; done
> >
> >     mta1.haskell.org.   A       145.40.99.54
> >
> >     $ brief() { dig +noall +ans +nocl +nottl "$@"; }
> >     $ set -- 145.40.99.54 2604:1380:4641:a100::5
> >     $ echo; for rev; do brief -t ptr -x $rev; done
> >
> >
>  5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.a.1.4.6.4.0.8.3.1.4.0.6.2.ip6.arpa.
> PTR misc-services-origin-migration.haskell.org.
> >
> > Only the IPv6 address has a PTR record, and even then it does not
> > forward resolve.  SMTP clients with no PTR records are routinely refused
> > service.  My mail server tolerates lack of forward mappings, but the PTR
> > is required.
> >
> > The correct DNS configuration would be:
> >
> >     forward zone:
> >         mta1.haskell.org.   A       145.40.99.54
> >         mta1.haskell.org.   AAAA    2604:1380:4641:a100::5
> >
> >     reverse IPv6 zone
> >
>  5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.a.1.4.6.4.0.8.3.1.4.0.6.2.ip6.arpa.
> PTR mta1.haskell.org.
> >
> >     reverse IPv4 zone
> >         54.99.40.145.in-addr.arpa. PTR mta.haskell.org.
> >
> > --
> >     Viktor.
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-- 
-- Kim-Ee
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