Re: Postfix - Next: Google Postmaster Tools

Message-ID	<69a0b1c7@news.ausics.net> (permalink)
From	not@telling.you.invalid (Computer Nerd Kev)
Subject	Re: Postfix - Next: Google Postmaster Tools
Newsgroups	alt.unix.geeks, comp.os.linux.misc
References	<slrn10pv5cg.2afs7.lars@cleo.beagle-ears.com> <10nok1t$1c7cl$3@dont-email.me> <slrn10q0jqd.2c8p5.lars@cleo.beagle-ears.com> <slrn10q15n9.2csik.lars@cleo.beagle-ears.com>
Date	2026-02-27 06:49 +1000
Organization	Ausics - https://newsgroups.ausics.net

Cross-posted to 2 groups.

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In comp.os.linux.misc Lars Poulsen <lars@beagle-ears.com> wrote:
> On 2026-02-26, Lars Poulsen <lars@beagle-ears.com> wrote:
>> Thank you!!
>> I think this may have solved this problem, so now I can get to
>> see what the next blockage will be.
> 
> The next stop was quite predictable: GMail will not accept mail from my
> domain anymore. And to find out why, I need to set up Postmaster Tools
> and register my domain(s) so I can see the reputation. Google tells me
> to add a new TXT record and/or a CNAME record to my DNS. I have now
> done both of these, but Google says they do not see these records.
> "Try again in a few minutes". - it's been several hours now.
> 
> I already have SPF records in place.

One wonders how DNS settings could possibly be the issue if the
same server was sending mail to them successfully with sendmail.
Anyway there are other online email deliverability tools that might
better highlight any issues, such as at viewdns.info and mxtoolbox.com

https://viewdns.info/dnsreport/
https://mxtoolbox.com/SuperTool.aspx

> By the way: Does anyone have a tool to convert the DMARC reports
> into a readable table? John L, maybe?

To be honest years ago I figured this out, wrote a script to run
it regularly from Cron, but never actually got it set up. Possibly
there was some bug which I couldn't raise enough enthusiasm to fix.

To make a HTML table you can use the XSL stylesheet here, and
xsltproc:
https://www.tana.it/sw/dmarc-xsl/

Assuming you have a mailbox "dmarc_mailbox" dedicated to DMARC
reports, this the manual process described in my notes:

mkdir -p ~/dmarc/zip ~/dmarc/htm
cd dmarc_mailbox
 uudeview -p ~/dmarc/zip +e .zip -i -m *
 uudeview -p ~/dmarc +e .gz -i -m *

cd ~/dmarc
 gunzip *.gz
 cd zip
 unzip -j '*.zip' -d ../

cd ~/dmarc/htm
 [copy/paste XSL stylesheet from webpage to file named dmarc.xsl]
 for i in `ls -t ../*.xml`; do xsltproc dmarc.xsl "$i" >> DMARC_reports_`date +%F`.htm; done

If you can be bothered, filter out duplicate <html>, <head>,
<title>, and </html> tags in DMARC_reports_`date +%F`.htm. However
Dillo views the page OK without doing that. Then if all is OK,
delete all the old mail in your "dmarc_mailbox" ready for next
time.

-- 
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#_ < |\| |< _#

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Thread

Postfix HELP!! Lars Poulsen <lars@beagle-ears.com> - 2026-02-26 00:36 +0000
  Re: Postfix HELP!! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-26 05:00 +0000
    Re: Postfix HELP!! - Thanks! Lars Poulsen <lars@beagle-ears.com> - 2026-02-26 13:49 +0000
      Re: Postfix HELP!! - Thanks! Rich <rich@example.invalid> - 2026-02-26 16:02 +0000
        Re: Postfix HELP!! - Thanks! Lars Poulsen <lars@beagle-ears.com> - 2026-02-26 18:09 +0000
          Re: Postfix HELP!! - Thanks! Rich <rich@example.invalid> - 2026-02-27 00:29 +0000
      Re: Postfix - Next: Google Postmaster Tools Lars Poulsen <lars@beagle-ears.com> - 2026-02-26 18:54 +0000
        Re: Postfix - Next: Google Postmaster Tools not@telling.you.invalid (Computer Nerd Kev) - 2026-02-27 06:49 +1000
        Re: Postfix - Next: Google Postmaster Tools Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-27 00:23 +0000
        Re: Postfix - Next: Google Postmaster Tools Stéphane CARPENTIER <sc@fiat-linux.fr> - 2026-02-28 12:13 +0000
  Re: Postfix HELP!! "Carlos E. R." <robin_listas@es.invalid> - 2026-02-26 08:19 +0100

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