On 19.12.22 13:20, Carlos Mogas da Silva wrote:

On Mon, 2022-12-19 at 12:38 +0100, Benny Pedersen wrote:

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Carlos Mogas da Silva skrev den 2022-12-19 11:57:

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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