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Date: Thu, 22 Feb 2024 19:45:41 +0100
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Subject: Re: [PHP-DEV] What's up with emails?
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From: timwolla@bastelstu.be (=?UTF-8?Q?Tim_D=C3=BCsterhus?=)

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 anything the 'a' within the SPF record could be removed, because 
that's the HTTP box on DigitalOcean.

Best regards
Tim Düsterhus