[Haskell-cafe] Missing messages in the ML

Wed Dec 8 19:06:15 UTC 2021

Thanks for your efforts! It's definitely a black art.

On Wed, 8 Dec 2021, 6.43 Gershom B, <gershomb at gmail.com> wrote:

> We migrated our secondary mail server, and have been working on
> bringing its reputation back up. As Viktor diagnosed, it also had a
> sending IP that did not have a PTR record, and that should now be
> resolved, as of last week. But I realized just now that the ptr and
> fwd lookup also have to correspond exactly, which they did not. That
> should also be now fixed. Further, I've tried to turn off sending most
> of our mailinglists through the secondary server, while the
> configuration settles down further. Apologies for the delays --
> getting a proper email host set up and acquiring proper reputation is
> a rather expert task, and I'm far from an expert.
>
> Cheers,
> Gershom
>
> On Tue, Dec 7, 2021 at 11:12 PM Kim-Ee Yeoh <ky3 at atamo.com> wrote:
> >
> > 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.
> >> _______________________________________________
> >> Haskell-Cafe mailing list
> >> To (un)subscribe, modify options or view archives go to:
> >> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> >> Only members subscribed via the mailman list are allowed to post.
> >
> > --
> > -- Kim-Ee
> _______________________________________________
> Haskell-Cafe mailing list
> To (un)subscribe, modify options or view archives go to:
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> Only members subscribed via the mailman list are allowed to post.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/haskell-cafe/attachments/20211208/53b0ee4b/attachment.html>