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MTA

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Hi,

I'm getting this error when sending message (responding to user on the
mailing list).

Does someone has a small idea where I could start my investigation ?

I'm hosting my mail server on Cloudflare DNS but the MX record is in clear.

The mail server is using a reserved IP and it is serving many domain
name for email.

I was thinking that maybe I should start thinking about hosting my own
email server. But I wasn't sure if I felt like I had the nerve to do so.
Some people say it's a lot of maintenance work.

I don't want to use Google for my domain as a email provider, this is
too costly.

The actual hosting provider I use (Namecheap) does a great job, except
that because it's a shared hosting provider my mail often gets flagged
junk and seem to always raise some problem with DMARC compliance,
possibly relating to the above.

Thanks,

Start of the error message received by "returned mail" :

Reporting-MTA: dns; premium58.web-hosting.com

Action: failed
Final-Recipient: rfc822;bjoern.ricks@greenbone.net
Status: 5.0.0
Remote-MTA: dns; mail.greenbone.net
Diagnostic-Code: smtp; 550 X-Host-Lookup-Failed: Reverse DNS lookup
failed for 162.213.253.79 (failed)


-- 
Polyna-Maude R.-Summerside
-Be smart, Be wise, Support opensource development

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MTA Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 15:30 +0200
  Re: MTA Greg Wooledge <greg@wooledge.org> - 2021-07-05 15:40 +0200
    Re: MTA Vincent Lefevre <vincent@vinc17.net> - 2021-07-05 16:00 +0200
      Re: MTA Greg Wooledge <greg@wooledge.org> - 2021-07-05 16:10 +0200
        Re: MTA Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 16:30 +0200
          Re: MTA Vincent Lefevre <vincent@vinc17.net> - 2021-07-05 17:10 +0200
          Re: MTA John Hasler <john@sugarbit.com> - 2021-07-05 17:20 +0200
        Re: MTA Vincent Lefevre <vincent@vinc17.net> - 2021-07-05 16:50 +0200
          Re: MTA Joe <joe@jretrading.com> - 2021-07-05 22:40 +0200
    Re: MTA Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 16:00 +0200
      Re: MTA Vincent Lefevre <vincent@vinc17.net> - 2021-07-05 16:00 +0200
        Re: MTA (corrected) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 16:40 +0200
          Re: MTA (corrected) Vincent Lefevre <vincent@vinc17.net> - 2021-07-05 17:10 +0200
            Re: MTA (corrected) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 17:50 +0200
            Re: MTA (corrected) Joe <joe@jretrading.com> - 2021-07-05 22:20 +0200
              Re: MTA (corrected) Vincent Lefevre <vincent@vinc17.net> - 2021-07-06 12:00 +0200
          Re: MTA (corrected) Greg Wooledge <greg@wooledge.org> - 2021-07-05 18:50 +0200
            Re: MTA (corrected) Greg Wooledge <greg@wooledge.org> - 2021-07-05 19:10 +0200
              Re: MTA (corrected) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 19:20 +0200
                Re: MTA (corrected) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-09 22:20 +0200
            Re: MTA (corrected) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-05 19:10 +0200
    Re: MTA Joe <joe@jretrading.com> - 2021-07-05 22:10 +0200
  Re: MTA Joe <joe@jretrading.com> - 2021-07-05 22:30 +0200

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