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Date: Thu, 22 Feb 2024 18:54:01 +0000
To: internals@lists.php.net
Subject: Re: [PHP-DEV] What's up with emails?
Message-ID: <ZdeYSb9IobZHUSs3@phcomp.co.uk>
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Organization: Parliament Hill Computers Ltd
From: addw@phcomp.co.uk (Alain D D Williams)

On Thu, Feb 22, 2024 at 07:45:41PM +0100, Tim Düsterhus wrote:
> Hi
> 
> On 2/22/24 16:29, Alain D D Williams wrote:
> > • SPF for lists.php.net is "v=spf1 a mx a:osu1php.osuosl.org. ip4:45.112.84.5 ip6:2a02:cb43:8000::1102"
> > Change to "v=spf1 a mx -all"
> > 
> > •• If you make the MX change that I suggest then the
> > following are redundant: ip4:45.112.84.5 ip6:2a02:cb43:8000::1102
> 
> I disagree with that. An MX is the receiver for inbound mail. It does not
> follow that emails are sent out via the MX. Removing the explicit listing of
> the IP addresses will just cause accidents in the future, if the MX no
> longer happens to also send email.

If the setup changes and the MX no longer send email then the SPF record can be
updated. For now it is a quick way of saying a:php-smtp4.php.net.

> If anything the 'a' within the SPF record could be removed, because that's
> the HTTP box on DigitalOcean.

"a" allows lists.php.net. to send email for the domain. I do not know if it
does but could easily believe that administrative/error/... type messages come
from there.

Regards

-- 
Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer.
+44 (0) 787 668 0256  https://www.phcomp.co.uk/
Parliament Hill Computers. Registration Information: https://www.phcomp.co.uk/Contact.html
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