Re: MTA (corrected)

From	Vincent Lefevre <vincent@vinc17.net>
Newsgroups	linux.debian.user
Subject	Re: MTA (corrected)
Date	2021-07-05 17:10 +0200
Message-ID	<Cxyoq-VR-7@gated-at.bofh.it> (permalink)
References	<CxwPD-8kc-1@gated-at.bofh.it> <CxwZk-8ns-3@gated-at.bofh.it> <CxxiG-8uI-3@gated-at.bofh.it> <CxxiI-8uI-17@gated-at.bofh.it> <CxxVn-wr-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 2021-07-05 10:32:27 -0400, Polyna-Maude Racicot-Summerside wrote:
> > What is this 162.213.253.79 IP address?
> 
> The IP address 162.213.253.79 is the dedicated IP I rent from Namecheap.

OK.

>  Can you control its reverse?
> >
> Good question, I'll need to go back read a bit on networking and DNS
> management.
> > Is cyrania.com a domain that you own?
> Yes, I own cyrania.com and polynamaude.com (the domain name used for the
> email I am sending). I know the SMTP server respond to the name
> CYRANIA.COM (HELO) but is relaying mail for polynamaude.com too.

It seems that you already set up the reverse for 162.213.253.79 since
it is cyrania.com (your domain).

You may want to add 162.213.253.79 to the cyrania.com IP addresses,
but if cyrania.com is used as a www host and 162.213.253.79 shoud
not be used for this purpose, this is not OK.

In general, it is better to have a specific FQDN for each IP address.
For instance, 162.213.253.79 would have nodename.cyrania.com as the
reverse and nodename.cyrania.com would resolve to 162.213.253.79,
where nodename is the name obtained with the "uname -n" command.

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Thread

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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