Likely that ULA has to send email from that host inside their network?
On 4 March 2023 19:00:18 UTC, Jaroslaw Rafa via mailop <mailop@mailop.org>
wrote:
>Dnia 3.03.2023 o godz. 22:21:28 John Levine via mailop pisze:
>> It appears that Jan Schaumann via mailop <jscha...@netmeister.org> said:
>> >$ host -t txt h-email.net
>> >h-email.net descriptive text "v=spf1 ip6:fd96:1c8a:43ad::/48 -all"
>>
>> That's the most interestingly broken SPF record I have ever seen.
>>
>> All valid IPv6 global addresses start with 2 or 3. That fd96 address
>> is a Unique Local Address, roughly analogous to an IPv4 10.x.x.x
>> address* so it's saying it never sends mail to the outside world.
>
>Why isn't it just "v=spf1 -all" then? That's the most common way of
>indicating that a domain should never send mail...
>--
>Regards,
> Jaroslaw Rafa
> r...@rafa.eu.org
>--
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