Re: question about net address

From	coreyh@free.fr
Newsgroups	linux.debian.user
Subject	Re: question about net address
Date	2023-03-19 11:40 +0100
Message-ID	<GaYCd-dxPE-9@gated-at.bofh.it> (permalink)
References	(1 earlier) <GaN45-dqtO-1@gated-at.bofh.it> <GaOjv-drce-1@gated-at.bofh.it> <GaY9b-dxET-1@gated-at.bofh.it> <GaYsx-dxM7-3@gated-at.bofh.it> <GaYCd-dxPE-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 19/03/2023 18:32, Jeremy Ardley wrote:
> On 19/3/23 18:28, coreyh@free.fr wrote:
>> "v=spf1 ip4:188.66.63.1/24 -all"
> 
> According to an AI version 4 that cannot be named:
> 
> This is an SPF (Sender Policy Framework) record, which is a TXT record
> in a domain's DNS settings. SPF records are used to help prevent email
> spoofing by specifying which mail servers are authorized to send email
> on behalf of a domain.
> 
> In this SPF record:
> 
>  * |v=spf1|: This indicates the SPF version used is SPF1.
>  * |ip4:188.66.63.1/24|: This specifies that the IPv4 address range
>    188.66.63.1 to 188.66.63.254 (a /24 range) is authorized to send
>    email on behalf of the domain.
>  * |-all|: This means that any host not listed in the SPF record (or
>    not within the authorized IP range) is not allowed to send email on
>    behalf of the domain.
> 
> To answer your question, this SPF record specifies a /24 range
> (188.66.63.1 to 188.66.63.254) rather than a single host. Any mail
> server with an IP address within that range is authorized to send
> email for the domain, while other mail servers are not allowed.


So,

* 188.66.63.1/24 is a range, not a single host in SPF
* why it's not written as 188.66.63.0/24 which is more clear?

Thanks

Thread

question about net address coreyh@free.fr - 2023-03-18 12:30 +0100
  Re: question about net address Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2023-03-18 13:40 +0100
  Re: question about net address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2023-03-18 14:30 +0100
  Re: question about net address Kushal Kumaran <kushal@locationd.net> - 2023-03-18 23:20 +0100
    Re: question about net address coreyh@free.fr - 2023-03-19 00:40 +0100
      Re: question about net address David Christensen <dpchrist@holgerdanske.com> - 2023-03-19 11:10 +0100
        Re: question about net address coreyh@free.fr - 2023-03-19 11:30 +0100
          Re: question about net address Joe <joe@jretrading.com> - 2023-03-19 11:40 +0100
          Re: question about net address Jeremy Ardley <jeremy@ardley.org> - 2023-03-19 11:40 +0100
            Re: question about net address coreyh@free.fr - 2023-03-19 11:40 +0100
              Re: question about net address jeremy ardley <jeremy@ardley.org> - 2023-03-19 11:50 +0100
              Re: question about net address <tomas@tuxteam.de> - 2023-03-19 12:10 +0100
              Re: question about net address Greg Wooledge <greg@wooledge.org> - 2023-03-19 13:20 +0100
                Re: question about net address Curt <curty@free.fr> - 2023-03-19 18:20 +0100
                Re: question about net address David Wright <deblis@lionunicorn.co.uk> - 2023-03-19 19:50 +0100
              Re: question about net address Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-19 16:00 +0100
            Re: question about net address Yassine Chaouche <a.chaouche@algerian-radio.dz> - 2023-03-19 12:10 +0100
              Re: question about net address <tomas@tuxteam.de> - 2023-03-19 12:20 +0100
              Re: question about net address <tomas@tuxteam.de> - 2023-03-19 12:20 +0100
                Re: question about net address Nicolas George <george@nsup.org> - 2023-03-19 12:20 +0100
                Re: question about net address Jeremy Ardley <jeremy@ardley.org> - 2023-03-19 12:40 +0100
                Re: question about net address Nicolas George <george@nsup.org> - 2023-03-19 12:50 +0100
                Re: question about net address Greg Wooledge <greg@wooledge.org> - 2023-03-19 13:30 +0100
                Re: question about net address David Wright <deblis@lionunicorn.co.uk> - 2023-03-19 18:30 +0100
                Re: question about net address David Wright <deblis@lionunicorn.co.uk> - 2023-03-19 19:50 +0100
                Re: question about net address Jeremy Ardley <jeremy@ardley.org> - 2023-03-20 00:40 +0100
                Re: question about net address fh@dnsbed.com - 2023-03-20 01:30 +0100
                Re: question about net address Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-21 23:30 +0100
                Re: question about net address Jeremy Ardley <jeremy@ardley.org> - 2023-03-22 00:00 +0100
                Re: question about net address David Wright <deblis@lionunicorn.co.uk> - 2023-03-22 00:50 +0100
                Re: question about net address David Wright <deblis@lionunicorn.co.uk> - 2023-03-22 15:50 +0100
                Re: question about net address Jeremy Ardley <jeremy@ardley.org> - 2023-03-19 12:40 +0100
                Re: question about net address Yassine Chaouche <a.chaouche@algerian-radio.dz> - 2023-03-19 13:10 +0100
                Re: question about net address Curt <curty@free.fr> - 2023-03-19 18:10 +0100
              Re: question about net address fh@dnsbed.com - 2023-03-19 12:40 +0100
                Re: question about net address <tomas@tuxteam.de> - 2023-03-19 13:00 +0100
              Re: artifiial intelligence (was: Re: question about net address) Yassine Chaouche <a.chaouche@algerian-radio.dz> - 2023-03-20 10:30 +0100
          Re: question about net address David Christensen <dpchrist@holgerdanske.com> - 2023-03-19 23:20 +0100
  Re: question about net address Yassine Chaouche <a.chaouche@algerian-radio.dz> - 2023-03-19 10:00 +0100
    Re: question about net address Yassine Chaouche <a.chaouche@algerian-radio.dz> - 2023-03-19 10:10 +0100
    Re: question about net address debian-user@howorth.org.uk - 2023-03-19 17:50 +0100

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