SPF DNS Error / R_SPF_DNSFAIL

Jochen Bern Jochen.Bern at binect.de
Tue Dec 20 15:20:03 UTC 2022


On 19.12.22 13:20, Carlos Mogas da Silva wrote:
> On Mon, 2022-12-19 at 12:38 +0100, Benny Pedersen wrote:
>> Carlos Mogas da Silva skrev den 2022-12-19 11:57:
>>> What can cause this error and/or how can I debug it?
>>
>> try avoid to many dns querys
> 
> Even on a caching dns server? Any ideas on why it is failing?

I don't remember it being in an actual RFC, but SPF records are supposed 
to not require more than 10 DNS queries to fully resolve.

https://dmarcian.com/spf-survey/ gives cttexpresso.pt an all-green 
result, but notes that the "+a:email.reditus.pt" part is inoperational 
("no A or AAAA RRs found", in fact, I'm getting an NXDOMAIN for the FQDN).

Regards,
-- 
Jochen Bern
Systemingenieur

Binect GmbH
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